UV flatbed printer with headstock visual scanning function

Abstract

The utility model relates to the technical field of UV printing, in particular to a UV flatbed printer with headstock visual scanning, which comprises a base, a cross beam component, a trolley device and a printing module, a workbench is mounted on the upper side of the base, the cross beam component is mounted on the base in a sliding manner and is driven by a Y-axis direction transmission component on the base to linearly move, and the trolley device is mounted on the workbench. The trolley device is installed on the cross beam component in a sliding mode and driven by an X-axis direction transmission component installed on the cross beam component to move linearly, and the printing module is installed on the trolley device and comprises a printing spray head component and a trolley head visual scanning camera. According to the utility model, the problems of high time consumption, complex positioning and various jig design and manufacture types in the traditional material swing positioning process in the UV flat plate printing industry are solved, the material swing positioning time is greatly saved, the product quality and the production efficiency are improved, the industrial technical difficulty is solved in a high cost performance mode, and the intelligent visual positioning requirement of production equipment is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to UV printing technical field, concretely is a kind of UV flatbed printer with car head vision scanning. BACKGROUND

[0002] The existing UV flatbed printer is basically to print the surface of single or multiple products to cover various color patterns, characters, signs, marks and other applications, and the position of the product to be printed is mostly manually calibrated by the operator, and the material placement and positioning are basically manually positioned by naked eye or machine vision positioning.

[0003] Among them, manual naked eye positioning operation often relies on manual work to spend a lot of time and effort, and visual fatigue is caused, resulting in placement deviation and material displacement, which affects product quality and production problems, and machine vision positioning, for materials with regular shape and low alignment accuracy, a part is erected above the workbench, and a CCD industrial camera or sensor is installed at a certain height to take pictures of the material to extract contour or Mark point position data, and the software automatically calculates the offset distance to perform visual auxiliary positioning to execute printing work. The CCD industrial camera is erected above the workbench of the UV flatbed printer, the camera lens is more than 1 meter away from the surface of the material, the working width of the UV flatbed printer is usually more than 0.6 meters*0.9 meters, and the CCD industrial camera or single-lens reflex camera relies on a single lens to shoot images, which will produce distortion around the image, and the larger the width, the greater the distortion. For a printing product with a positioning deviation of less than 0.3mm around, it cannot meet the use requirements of full-width positioning accuracy, and the machine structure is complex and the cost is high. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of UV flatbed printer with car head vision scanning, solve the existing UV flatbed printer for material placement and positioning basically manual naked eye positioning or long-distance machine vision positioning, on the one hand, manual naked eye positioning operation is limited by human vision, and positioning quality cannot be guaranteed, on the other hand, long-distance machine vision positioning has large distortion and positioning accuracy greater than 0.3mm, which cannot meet the high-precision production requirements.

[0005] To achieve the above purpose, the utility model provides a kind of UV flatbed printer with car head vision scanning, comprising:

[0006] Base, workbench is installed on its upper side;

[0007] Crossbeam component, slidingly installed on the base, and linearly moved by Y-axis direction transmission component on the base;

[0008] Trolley device, slidingly installed on the crossbeam component, and linearly moved by X-axis direction transmission component installed on the crossbeam component;

[0009] The printing module is installed on the trolley device, and comprises a printing nozzle part and a trolley head visual scanning camera.

[0010] The motion controller is used for controlling the movement of the Y-axis direction transmission part, the X-axis direction transmission part and the trolley device lifting mechanism.

[0011] As a further scheme of the present application, the trolley head visual scanning camera is arranged on the side of the trolley device, and the printing nozzle part is installed behind the trolley head visual scanning camera.

[0012] As a further scheme of the present application, the surface focal point distance of the trolley head visual scanning camera is 1-30 mm, and the material surface with high and low levels within the focal point distance range can be scanned and captured image features.

[0013] As a further scheme of the present application, the trolley device comprises a trolley frame, a printing nozzle control board, a secondary ink box, a safety bottle, a heating device, an ink filter, an ink supply pipeline and a printing head.

[0014] As a further scheme of the present application, an automatic ink supply system is arranged in the rear cabinet of the base, and is used for stably conveying printing ink to the secondary ink box of the trolley device.

[0015] As a further scheme of the present application, a UV curing device is arranged in the cabinet of the base.

[0016] As a further scheme of the present application, a motion controller is arranged on the front of the base, and is used for realizing the control of the actions of the functional parts of the printer.

[0017] As a further scheme of the present application, the motion controller is used for controlling the motion system in the base, and the motion system comprises an air switch, an alternating current contactor, a filter, a switching power supply and a servo driver.

[0018] As a further scheme of the present application, the machine protection shell part is arranged around the base.

[0019] Compared with the prior art, the present application can place the to-be-printed material at any angle on the workbench, and the spacing and angle between the materials do not need to be regularly arranged. The vehicle head visual scanning camera moves back and forth along the specified path through the vehicle head device to scan and obtain image information. The matching visual module controls the automatic rotation of the printed image, matches and aligns the printed material, and solves the problems of long time consumption, complex positioning, various jig design and production, and low production efficiency in the traditional material swing positioning process in the UV flatbed printing industry. The present application greatly saves the material positioning time, improves the product quality and production efficiency, solves the technical difficulties in the industry in a high cost-effective manner, and meets the intelligent visual positioning needs of the production equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 A structure schematic diagram of a three-dimensional front view of the UV flatbed printer with the vehicle head visual scanning is provided.

[0021] Fig. 2 A structure schematic diagram of a three-dimensional rear view of the UV flatbed printer with the vehicle head visual scanning is provided.

[0022] Fig. 3 A structure schematic diagram of a three-dimensional side view of the UV flatbed printer with the vehicle head visual scanning is provided.

[0023] In the drawings: 1-vehicle head visual scanning camera, 2-trolley device, 3-trolley device lifting mechanism, 4-X-axis direction transmission part, 5-Y-axis direction transmission part, 6-cross beam part, 7-raster digital positioning device, 8-waste ink collection device, 9-workbench, 10-base, 11-ink path negative pressure stabilizing device, 12-automatic ink supply system, 13-UV curing device, 14-vacuum suction device, 15-motion controller, 16-motion system, 17-machine protection shell part. DETAILED DESCRIPTION

[0024] The technical scheme of the present application will be further described in detail in combination with specific embodiments.

[0025] As Figs. 1-3As shown in the utility model embodiment, a UV flatbed printer with a vehicle head visual scanning function, comprising a base 10, a workbench 9 is installed on the upper side of the base 10; a beam component 6 is slidably installed on the base 10 and linearly moves under the drive of a Y-axis direction transmission component 5 on the base 10; a trolley device 2 is slidably installed on the beam component 6 and linearly moves under the drive of an X-axis direction transmission component 4 installed on the beam component 6; a printing module is installed on the trolley device 2, comprising a printing nozzle component and a vehicle head visual scanning camera 1, and the printing module linearly lifts under the drive of a lifting mechanism 3 installed on the trolley device 2; the visual imaging lens points in parallel with the printing nozzle; the lens of the vehicle head visual scanning camera 1 points perpendicularly to the surface of the printing material; a motion controller 15 is used to control the movement of the Y-axis direction transmission component 5, the X-axis direction transmission component 4 and the lifting mechanism 3 of the trolley device;

[0026] The utility model scans and captures the image characteristic information such as the material profile, pattern and logo under the lens in the motion mode of row-by-row reciprocating scanning, and transmits the image to the PC end; the image obtained is data-converted and automatically merged into a complete image by using the matching vehicle head visual camera scanning module; a size-identical graphic template is established with reference to the original design image and size; the scanned image is RIP processed by digital rasterization; the image local size is scaled and corrected by comparing the original product size; the graphic template is automatically rotated and matched by the vehicle head visual scanning module according to the scanning and capturing processing object angle and position, so that the graphic template and the printing area angle and position of the object to be processed on the workbench 9 completely match and a new printing data file is generated; the UV flatbed printer implements accurate digital printing work according to the data file processed by matching;

[0027] Further, the Y-axis direction transmission component comprises two groups of ball screws and linear guide pairs on the left and right of the base 10; the two groups of ball screws synchronously drive the machine beam to make reciprocating accurate motion, so that the printing and scanning images realize continuous printing and scanning work in the Y-axis direction;

[0028] In addition, the X-axis direction transmission component 4 comprises a servo motor, a small synchronous wheel, a large synchronous wheel, a synchronous belt, a linear guide rail and a fixing member, and also comprises a driven functional synchronous wheel and a structural member at the other end, which are used to drive the printing trolley device 2 to reciprocate in the X-axis direction;

[0029] In addition, the lifting mechanism 3 of the trolley device comprises a servo motor, a shaft coupling and a fixing structural member, which are used to adapt to the thickness of different printing materials; the height of the printing trolley device 2 and the material surface can be quickly set by the printing equipment; the two are adjusted to an appropriate distance to print exquisite patterns; otherwise, if the distance is too close, the material is easy to collide with or jam the nozzle, which causes the damage of the ink outlet hole of the nozzle; if the distance is too far, the ink droplets are scattered, which causes the characters and patterns printed to be blurred and unable to achieve the design effect of the artwork.

[0030] The raster digital positioning device 7 is arranged above the machine beam and parallel to the straight guide rail pair, the print head on the print carriage device 2 reads the real-time position of the print head according to the raster decoder, the printing equipment controls and distributes the ink ejection time and ink ejection speed of each ink hole on the print head, so as to realize the image printing function in the X-axis direction, and of course, the raster digital positioning device 7 can also be replaced by the X-axis magnetic grid positioning device.

[0031] The workbench 9 is internally provided with a negative pressure cavity, and a surface is designed with a plurality of small holes for negative pressure adsorption, and the material with a smooth surface can be firmly adsorbed on the platform by starting the vacuum adsorption negative pressure device 14, so that the material can be accurately positioned during subsequent printing.

[0032] As shown in the drawings, Figs. 1-3 In the embodiment of the utility model, the front visual scanning camera 1 is arranged in front of the trolley device 2, the print head component is installed behind the front visual scanning camera 1, the print trolley device 2 drives the front visual scanning camera 1 to transmit to the image analysis processing module matched with the PC end to generate a print path file of ink jet printing every time the front visual scanning camera 1 scans a picture in the linear direction, and the synchronous printing of the print head component is realized after the buffer time of the distance difference and the printing 4-8 PASS quantity; it needs to be explained that the front visual scanning camera and the image analysis processing module mentioned in the specification are both mature technologies, and there are a large number of related products that can be directly purchased on the market through visual identification and positioning; the application to be protected is not the specific structure of the two, but the technical effect achieved after the combination of multiple components.

[0033] Meanwhile, the front visual scanning camera 1 has a surface focal distance of 1-30mm, and can scan and capture image features of the material surface with high and low levels within the focal distance range.

[0034] As shown in the drawings, Figs. 1-3 In the embodiment of the utility model, the trolley device 2 includes a trolley frame, a print spray trolley control panel, a secondary ink cartridge, a safety bottle, a heating device, an ink filter, an ink supply pipeline and a print head, and meanwhile, a waste ink collecting device 8 is arranged on the right side of the machine beam, the device is made of a material resistant to ink corrosion, and is used for moisturizing the print head and collecting the ink spray of the print head in standby mode, and has a connecting pipeline inside for discharging the collected waste ink, and an ink pipeline negative pressure stabilizing device 11 is arranged in the rear cabinet of the machine, which mainly provides a stable negative pressure environment for the ink pipeline of the print head, ensures that the atmospheric pressure value of the ink in the print head reaches a balance point, and stabilizes the work; the device also has a positive ink pressing function for eliminating bubbles in the ink pipeline.

[0035] Further, an automatic ink supply system 12 is designed in the rear cabinet of the machine, which is composed of an ink pump, a precision filter, an ink tank and an ink supply pipeline, and functions to stably supply printing ink to the secondary ink tank of the printing carriage device 2; when the ink is printed on the material, the ink in the nozzle is reduced, and the secondary ink tank timely replenishes the ink for the nozzle; when the float alarm device of the secondary ink tank triggers an alarm, the ink pump controlled by the inkjet board card automatically provides appropriate ink for the secondary ink tank.

[0036] A UV curing device 13 is designed in the cabinet of the base of the machine, and functions to supply power for the UV lamp and drive the internal cooling water circulation of the UV lamp head; since a large amount of heat energy is generated when the UV lamp performs curing work, cooling treatment is needed to prevent the UV lamp from being damaged due to overheating caused by continuous work.

[0037] A motion controller 15 is designed in the front of the machine, which is composed of a PC host, a display and switch buttons of a control circuit, and functions to uniformly command and process data for each functional part of the UV flatbed printer, automatically splice, compare and establish a printing image template for the image file scanned by the head scanning camera, and perform digital rasterization RIP processing on the scanned image.

[0038] The motion controller 15 is used to control the motion system 16 in the base 10, which is composed of an air switch, an AC contactor, a filter, a switching power supply and a servo driver, and is mainly used to drive the X-axis direction and Y-axis direction motion of the UV flatbed printer and the up-down lifting of the printing carriage device 2.

[0039] Machine protective shell parts 17 are designed around the machine, which are used for safety protection of transmission parts and appearance design of the machine.

[0040] Through the utility model, the to-be-printed material can be placed at any angle on the workbench 9, and the spacing and angle between the materials also do not need to be regularly arranged; the head visual scanning camera moves back and forth along the specified path through the head device to scan and obtain image information, and the printing image is automatically rotated and matched to align the printing material by applying the visual module function, which breaks through the traditional material swing positioning process in the UV flatbed printing industry, solves the problems of long time consumption, complex positioning, various jig design and production, and low production efficiency, greatly saves the material positioning time, improves the product quality and production efficiency, solves the technical difficulties in the industry in a high cost-effective manner, and meets the intelligent visual positioning needs of the production equipment.

[0041] The preferred embodiments of the utility model are described in detail above, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the utility model.

Claims

1. A UV flatbed printer with head vision scanning, characterized in that, It comprises: a base with a workbench installed on the upper side; a beam component slidingly installed on the base and linearly moved by a Y-axis direction transmission component on the base; a trolley device slidingly installed on the beam component and linearly moved by an X-axis direction transmission component installed on the beam component; a printing module installed on the trolley device, which comprises a printing nozzle component and a trolley head visual scanning camera, and the printing module is linearly lifted by a trolley device lifting mechanism installed on the trolley device, the visual imaging lens points to the parallel direction of the printing nozzle, and the lens of the trolley head visual scanning camera points to the direction perpendicular to the surface of the printed material; a motion controller for controlling the movement of the Y-axis direction transmission component, the X-axis direction transmission component and the trolley device lifting mechanism.

2. A UV flatbed printer with vehicle head vision scanning according to claim 1, characterized in that, The trolley head visual scanning camera is arranged on the side of the trolley device, and the printing nozzle component is installed behind the trolley head visual scanning camera.

3. A UV flatbed printer with vehicle head vision scanning according to claim 1, characterized in that, The surface focal distance of the trolley head visual scanning camera is 1-30mm, and the image features of the material surface with high and low levels within the focal distance range can be captured by scanning.

4. A UV flatbed printer with vehicle head vision scanning according to claim 1, characterized in that, The trolley device comprises a trolley frame, a printing nozzle control board, a secondary ink cartridge, a safety bottle, a heating device, an ink filter, an ink supply pipeline and a printing nozzle component.

5. A UV flatbed printer with vehicle head vision scanning according to claim 4, characterized in that, An automatic ink supply system is designed in the rear cabinet of the base for stably supplying printing ink to the secondary ink cartridge of the trolley device.

6. A UV flatbed printer with vehicle head vision scanning according to claim 4, characterized in that, A UV curing device is designed in the cabinet of the base.

7. A UV flatbed printer with vehicle head vision scanning according to claim 1, characterized in that, A motion controller is designed on the front of the base for unified command and data processing of the functional components of the printer.

8. A UV flatbed printer with vehicle head vision scanning according to claim 1, characterized in that, Machine protection shell components are designed around the base.

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