Color printer

Abstract

A color printer comprises a feeding device, a pressing device, a vacuum adsorption device, a visual device, an automatic cleaning device, an automatic ink scraping device and a printing device. The feeding device is provided with a conveying structure capable of intermittently moving the sheet stock for a certain distance; the material pressing device is provided with an extrusion structure, so that the conveyed sheet materials are smoother; the visual device is provided with a camera capable of identifying images or contours of sheet stocks in a certain interval or position on the feeding device; the printing device is provided with an ink-jet structure and a track structure, and the ink-jet structure can be moved to a designated position to print various patterns or mark process position lines according to images or contours recognized by the visual device; and under the conveying of the feeding device, the sheet material passes through the material pressing device and then reaches the position of the visual device for image recognition and line or pattern printing. And the pressing device is utilized to extrude and flatten the sheet stock, so that the photographing recognition and printing precision is higher, and printing in a larger range can be realized by utilizing the track.

Description

Technical Field

[0001] The utility model belongs to the field of marking tools for shoes, clothing and luggage, and particularly relates to a color printer. Background Art

[0002] For existing leather or textile products such as shoes, clothing and luggage, it is necessary to first cut the leather or fabric into various irregularly shaped pieces and then stitch or bond them together. Without markings, the positions will shift during manual operation, resulting in various shapes being pieced together. Therefore, markings are generally required at the stitching or bending positions. That is, a line drawing machine is used to make markings on the pieces by inkjet. For irregular shapes, it is necessary to first perform photo recognition and then start inkjet marking. However, after the pieces are cut, they generally bend, deform or the edges warp, affecting photo recognition and subsequent line drawing marking.

[0003] The Chinese utility model patent publication number CN213663976U discloses that the line drawing pressing frame used on a line drawing machine can effectively press the pieces with warped edges and local deformation, which is beneficial to the rapid matching of the graphics after being photographed by a CCD vision camera with the template, improving the effectiveness of graphic matching, reducing the probability of matching errors and missed matches. However, this design also has many deficiencies. The silk thread will block the printing at some positions, unable to form perfect markings. Some pieces with large deformation and bending cannot be pressed flat, and the raised parts will affect the nozzle of the line drawing machine. In addition, this solution is limited by the inkjet line drawing device and the vision device. The feeding belt is designed very narrow. If it is designed wide, the cost will be very high. The width of the feeding belt limits the number of people feeding the material, and thus limits the feeding speed, resulting in poor market competitiveness. Summary of the Utility Model

[0004] Aiming at the above-mentioned existing technology, the purpose of the utility model is to provide a color printer with a wider width and higher printing accuracy.

[0005] The technical solution of the utility model is realized as follows: A color printer includes a feeding device, a material pressing device, a vision device and a printing device; the feeding device is provided with a conveying structure capable of intermittently moving the piece a certain distance; the material pressing device is provided with a pressing structure to make the conveyed piece flatter; the vision device is provided with a camera capable of recognizing the image or contour of the piece in a certain area or position on the feeding device; the printing device is provided with an inkjet structure and a track structure capable of moving the inkjet structure to a specified position according to the image or contour recognized by the vision device for printing various patterns or marking the line of the process position; under the conveying of the feeding device, the piece reaches the vision device position after passing through the material pressing device for image recognition and printing of lines or patterns.

[0006] The beneficial effects of such a design are as follows: The blanking device is used to extrude and flatten the sheet material, making the photographing recognition and printing accuracy higher. The use of the track enables printing over a larger range, reduces the number of inkjet structures of the printing device, and lowers the cost of the printing device, making the printing device more efficient. The intermittent movement mechanism can manually screen the sheet material when placing it. Some sheet materials with large deformations are directly removed, while those with small deformations can be extruded by the blanking device to make the sheet material flatter. The camera can obtain an image by taking a photo and recognize the image. In this way, by quickly recognizing the contour of the sheet material, the angle and position of the sheet material placement are determined, and the printing device is started to perform the preset pattern or line printing.

[0007] Furthermore, the blanking device at least includes a heating device and an extrusion device. The heating device is provided with a heat source, and the heat source heats the sheet material by one or more of the ways of direct contact, indirect contact, thermal radiation, and heat convection. The heat of the heat source is obtained by one or more of resistance heating, electromagnetic heating, fuel heating, heat pump heating, high-temperature gas or liquid heating; the extrusion device is a pressure roller that can roll the sheet material, or the extrusion device is two planar structures that directly or indirectly extrude the sheet material through relative movement, making the sheet material flatter under the action of pressure. The color printer can heat the uneven sheet material through the heating device. After the sheet material is heated, it generally becomes soft and its plasticity is enhanced. By extruding the sheet material through the extrusion device, the sheet material can be made flat. After the sheet material moves away from the heating device, its temperature drops, and it can maintain a flat shape, which can meet the requirements of inkjet printing and image recognition of the vision device and the printing device. Compared with the prior art, the sheet material remains in a flatter state after being extruded by the extrusion device. For example, rapid heating can be achieved by increasing the heating temperature when using rolling, which can greatly improve the working efficiency of the color printer. Even when using planar structure extrusion, the flatness of the sheet material can be greatly improved, making the printing and recognition accuracy higher.

[0008] Furthermore, a heating rod is provided inside the pressure roller, so that the extrusion device and the heating device form a heat roller with a heating function. The feeding device is a conveyor belt structure directly or indirectly driven by a motor. Such a design makes the heating device and the extrusion device a simple structural design and convenient for manufacturing. Using the heat roller to heat the sheet material can quickly convey the sheet material and improve the working efficiency of the printer.

[0009] Further, the conveyor belt structure includes a driving roller, an auxiliary roller, a supporting roller, and a conveyor belt. The driving roller and the auxiliary roller are symmetrically arranged on both sides of the conveyor belt and are close to each other to clamp the conveyor belt and drive the conveyor belt to move. The heating roller and the supporting roller are arranged on the upper and lower sides of the conveyor belt with a certain distance therebetween, so that when the sheet material and the conveyor belt move between the heating roller and the supporting roller, the heating roller can directly or indirectly extrude the sheet material. The conveyor belt needs to be driven by the driving roller. Therefore, the driving roller and the auxiliary roller must apply a certain pressure to the conveyor belt so as to generate frictional force to drive the conveyor belt to move. The supporting roller mainly cooperates with the heating roller to extrude the sheet material to produce a certain extrusion effect to plastically process the sheet material to make the sheet material flatter, providing suitable working conditions for the subsequent printing device and vision device so that the printing or marking position is more accurate.

[0010] Further, the driving roller and the auxiliary roller are driven by a first transmission component, the heating roller and the supporting roller are driven by a second transmission component, the driving roller and the supporting roller are driven by a chain or a belt and a tensioning wheel is provided to ensure the synchronous rotation of the driving roller and the supporting roller. The feeding device is further provided with a speed sensor or a position sensor to detect the speed or displacement of the conveyor belt. In this way, the driving roller, the auxiliary roller, the supporting roller, and the heating roller can rotate synchronously. Since there is a certain time difference in the operation of the vision device and the printing device, that is, the printing device can receive the specific printing shape instruction only after the vision device recognizes the contour of the sheet material, and the sheet material is flat, then inkjet marking can be carried out at an accurate position.

[0011] Furthermore, the conveyor belt structure further includes a first bracket, a second bracket, a first bearing block, a second bearing block, a first adjusting spring, a second adjusting spring, a first adjusting screw, and a second adjusting screw. The first bracket and the second bracket are fixed to the frame. Both the first drive assembly and the second drive assembly are driven by gears. The driving roller is rotatably mounted to the first bracket. The first bracket is provided with a first track. The auxiliary roller is rotatably mounted to the first bearing block relative to the first bearing block. The first bearing block is slidably mounted to the first track relative to the first track. One end of the first adjusting spring abuts against the first bearing block and the other end abuts against the first adjusting screw. The first bracket is provided with a threaded hole such that the first adjusting screw can be installed into the threaded hole and the deformation amount of the first adjusting spring can be controlled by the installation depth of the first adjusting screw. The supporting roller is rotatably mounted to the second bracket. The second bracket is provided with a second track. The heating roller is rotatably mounted to the second bearing block relative to the second bearing block. The second bearing block is slidably mounted to the second track relative to the second track. One end of the second adjusting spring abuts against the second bearing block and the other end abuts against the second adjusting screw. The second bracket is provided with a threaded hole such that the second adjusting screw can be installed into the threaded hole and the deformation amount of the second adjusting spring can be controlled by the installation depth of the second adjusting screw. In this way, the pressure of the driving roller and the auxiliary roller on the conveyor belt can be conveniently controlled by the first adjusting spring, and the pressure of the heating roller and the supporting roller on the conveyor belt can be controlled by the second adjusting spring. With appropriate pressure, the conveyor belt moves more smoothly.

[0012] Furthermore, the track structure is provided with a longitudinal track and a transverse track such that the inkjet structure can print or mark the sheet material within a certain plane range. The track structure is provided with a position sensor to indirectly detect the position of the inkjet structure.

[0013] Furthermore, a cover plate is provided on the printer frame. A circular hole is provided in the center of the cover plate. A camera cover is provided above the circular hole. The camera is fixed inside the camera cover and is located directly above the conveyor belt so that the sheet material on the conveyor belt can be photographed and identified when the conveyor belt stops moving.

[0014] Furthermore, the inkjet structure is provided with a red ink cartridge, a blue ink cartridge, a yellow ink cartridge, and a black ink cartridge. The red ink cartridge, the blue ink cartridge, the yellow ink cartridge, and the black ink cartridge are arranged in two rows and two columns.

[0015] Furthermore, a scraping blade and an automatic cleaning device are provided within the moving range of the inkjet structure. The feeding device is provided with a vacuum adsorption device to adsorb the sheet material. The scraping blade is provided with a rubber blade. The scraping blade is provided with a driving cylinder and a sliding track such that the scraping blade moves along the sliding track under the action of the driving cylinder. The height in the height direction, i.e., the Z-axis, controls the height of the inkjet structure with a lifting motor. Description of the Drawings

[0016] Figure 1Schematic diagram of the overall three - dimensional view of a color printer according to Embodiment 1 of the present utility model;

[0017] Figure 2 Schematic diagram of the three - dimensional view of a color printer removing part of the housing according to Embodiment 1 of the present utility model;

[0018] Figure 3 Schematic diagram of the three - dimensional view of a color printer removing part of the structure according to Embodiment 1 of the present utility model;

[0019] Figure 4 Schematic diagram of the three - dimensional view of a color printer removing part of the housing and the printing device 3 according to Embodiment 1 of the present utility model;

[0020] Figure 5 Is Figure 4 The enlarged schematic diagram at position A in;

[0021] Figure 6 Is Figure 4 The enlarged schematic diagram at position B in;

[0022] Figure 7 Schematic diagram of the feeding device and the extrusion device of a color printer according to Embodiment 2 of the present utility model;

[0023] Figure 8 Schematic diagram of the feeding device and the extrusion device of a color printer according to Embodiment 3 of the present utility model. Detailed implementation manners

[0024] As required, detailed embodiments of the present utility model are disclosed herein, but it should be understood that the disclosed embodiments are only exemplary of the present utility model, and the present utility model can be implemented in different and alternative forms. The drawings are not necessarily drawn to scale, and some features may be exaggerated or reduced to show details of specific components. Therefore, the specific structural and functional details disclosed herein should not be construed as having a limiting meaning, but only as a representative basis for teaching those skilled in the art to adopt the present utility model differently. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0025] The feeding device and the vision device of the present utility model can be set with reference to the prior art, and can not only draw lines but also print patterns. The color printer of the present utility model is improved based on the traditional line - drawing machine, replacing the traditional machine that can only draw lines alone, and is essentially the same as a printer, and can directly print color patterns.

[0026] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 And Figure 8As shown in the figure, a color printer includes a feeding device 1, a material pressing device 7, a vision device 4, and a printing device 3. The feeding device 1 is provided with a conveying structure capable of intermittently moving the sheet material 24 a certain distance. The material pressing device 7 is provided with a pressing structure to make the conveyed sheet material 24 flatter. The vision device 4 is provided with a camera capable of identifying the image or contour of the sheet material 24 in a certain area or at a certain position on the feeding device 1. The printing device 3 is provided with an inkjet structure 53 and a track structure 50 capable of moving the inkjet structure 53 to a specified position according to the image or contour identified by the vision device 4 for printing various patterns or marking the process position lines. Under the conveyance of the feeding device 1, the sheet material 24 reaches the position of the vision device 4 after passing through the material pressing device 7 for image or contour recognition. After the image or contour recognition, printing can be performed according to the preset lines or patterns. The printing device 3 is provided with a circuit board for controlling printing, that is, a control circuit, which can be connected to a computer network to achieve data transmission.

[0027] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown in the figure, the material pressing device 7 at least includes a heating device 5 and a pressing device 2. The heating device 5 is provided with a heat source, and the heat source heats the sheet material 24 by one or more of the ways of direct contact, indirect contact, thermal radiation, and heat convection. The heat of the heat source is obtained by one or more of resistance heating, electromagnetic heating, fuel heating, heat pump heating, high-temperature gas or liquid heating. For example, if the heat source is a heating rod and the temperature is appropriate, below 150 degrees, it can directly contact the sheet material 24 to heat the sheet material 24. If the temperature of the heating rod is very high, then it cannot directly contact the sheet material and needs to indirectly contact the sheet material 24 through other structures to achieve heating. For example, the heating device 5 is arranged on the pressing device 2 to directly achieve heating through the pressing device 2, or the heating rod is arranged close to the sheet material position to use thermal radiation and heat convection to achieve heating of the sheet material 24 without contacting the sheet material. There are many sources of heat. For resistance heating, just set a resistance wire. For electromagnetic heating, set the corresponding coil. It can heat the mandrel, and then transfer the heat to the pressing device 2 or other ways to increase the heat transfer to the sheet material 24. Fuel heating requires setting a certain chamber to introduce air or oxygen and adding fuel to generate heat using chemical energy, and the heat can be transferred to the pressing device 2 or other ways to transfer to the sheet material 24. Heat pump heating requires compressing air to achieve temperature increase. Of course, it can also directly use the liquid or gas heated by other structures to achieve heating of the sheet material.

[0028] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8As shown, the extrusion device 2 is such that the pressure roller 8 can roll the sheet material 24. A support roller 20 is provided below the pressure roller 8 to realize the rolling of the sheet material 24 on the conveyor belt 23. If a planar structure is provided below the conveyor belt 23 to achieve support, rolling can also be completed, but the conveying resistance of the conveyor belt 23 is relatively large. Or the extrusion device is two planar structures that achieve direct or indirect extrusion of the sheet material through relative movement, making the sheet material flatter under the action of pressure. The planar structure can be moved up and down through a hydraulic structure to extrude the sheet material 24.

[0029] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the color printer further includes a feeding device 1, a vision device 4, and a printing device 3; the feeding device 1 is provided with a conveying structure capable of moving the sheet material 24 a certain distance; the vision device 4 is provided with a camera capable of identifying the image or contour of a moving or stationary object; the printing device 3 is provided with an inkjet structure capable of printing various patterns or marking process position lines according to the image or contour identified by the vision device 4; under the conveyance of the feeding device 1, the sheet material 24 reaches the position of the vision device 4 for image recognition and finally reaches the position of the printing device 3 to complete the printing of the specified lines or patterns.

[0030] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, a color printer includes a heating device 5, an extrusion device 2, a feeding device 1, a vision device 4, and a printing device 3; the feeding device 1 is provided with a conveying structure capable of moving the sheet material 24 a certain distance, which can be a conveyor belt structure 6, or a rotating conveying disk structure 87, or a robotic arm or a sliding track can also be used to move the sheet material 24. However, the speed of the robotic arm and the sliding track is relatively difficult to increase compared with other structures, and generally will not be used for high-speed printers. But in the future, if the speed of the linear movement structure is increased, a robotic arm or a sliding track can also be used to move the sheet material 24. The vision device 4 is provided with a camera capable of identifying the image or contour of a stationary object; the position of the sheet material 24 can be identified after it reaches the specified printing and photographing position 48. In this way, the efficiency is higher when manually placing the sheet material 24, and there is no need to consider the placement angle of the sheet material 24. Of course, the sheet material 24 needs to have a certain flatness, and if it is bent or deformed, it cannot be identified by a two-dimensional camera. Therefore, a flatness structure for the sheet material 24 needs to be set. The printing device 3 is provided with an inkjet structure capable of printing various patterns or marking process position lines according to the image or contour identified by the vision device 4.

[0031] As Figure 1 ,Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in Figure 5 and Figure 6 , the heating device 5 is provided with a heating rod 11 integrated with the extrusion device 2 to heat the sheet material 24 when the extrusion device 2 extrudes the sheet material 24, or is provided with a heating lamp or a heating rod 11 to perform non-direct contact heating on the sheet material 24 at a certain position; the extrusion device 2 is a pressure roller 8 capable of rolling the sheet material 24, or the extrusion device 2 is a planar structure that squeezes the sheet material 24 by moving relatively up and down, so that the sheet material 24 becomes flatter under the action of pressure; after being extruded by the extrusion device 2, the sheet material 24 moves away from the heating device 5, the temperature decreases and it maintains a flat state, and is conveyed by the feeding device 1 to the position of the vision device 4 for image recognition, and finally reaches the position of the printing device 3 to complete the printing of the specified lines or patterns. The heating device 5 can also be heated by electromagnetic induction, or by a heat pump, or by fuel, or by other means such as oil, water or steam. Only the corresponding pipelines need to be set. Of course, the easiest way to control and the simplest structure is the electric heating method.

[0032] Embodiment 1:

[0033] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the color printer is provided with a frame 9 and a housing 10. The pressure roller 8 is directly or indirectly installed on the frame 9. The heating rod 11 is arranged inside the pressure roller 8, so that the extrusion device 2 and the heating device 5 form a hot roller 12 with a heating function. Since the hot roller 12 needs to rotate, the heating rod 11 is slidably connected to the power supply through a brush ring and a brush. The feeding device 1 is a conveyor belt structure 6 directly or indirectly driven by a motor 15.

[0034] As Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the conveyor belt structure 6 includes a driving roller 18, an auxiliary roller 19, a supporting roller 20, a front roller 21, a rear roller 22, and a conveyor belt 23. The front roller 21 is located at the foremost end, and the rear roller 22 is located at the rearmost end. Between the front roller 21 and the hot roller 12 is a loading table, and between the printing device 3 and the rear roller 22 is a receiving table. The driving roller 18 and the auxiliary roller 19 are symmetrically arranged on both sides of the conveyor belt 23 and are close to each other to clamp the conveyor belt 23 and drive the conveyor belt 23 to move. The driving roller 18 and the auxiliary roller 19 clamp the conveyor belt 23 one above the other. The hot roller 12 and the supporting roller 20 are arranged on the upper and lower sides of the conveyor belt 23 with a certain distance therebetween, so that when the sheet material 24 and the conveyor belt 23 move between the hot roller 12 and the supporting roller 20, the hot roller 12 can directly or indirectly extrude the sheet material 24. The hot roller 12 is located above the supporting roller 20. The indirect extrusion of the sheet material 24 by the hot roller 12 has a slightly slower heating speed but more uniform heating. The direct extrusion of the sheet material 24 by the hot roller 12 has a faster heating speed and can improve the working efficiency of the printer.

[0035] As Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the driving roller 18 and the auxiliary roller 19 are driven by a first transmission assembly 25, the hot roller 12 and the supporting roller 20 are driven by a second transmission assembly 26, the driving roller 18 and the supporting roller 20 are driven by a chain or a belt and a tensioning wheel 27 is provided to ensure the synchronization of the rotation of the driving roller 18 and the supporting roller 20. The feeding device 1 is also provided with a speed sensor or a position sensor to detect the speed or displacement of the conveyor belt 23. The first transmission assembly 25 and the second transmission assembly 26 can adopt gear or pulley and sprocket transmission. For pulley and sprocket, a tensioning wheel needs to be provided to adjust the distance. For gears, no special setting is required. Even if there is a small radial movement, the transmission ratio remains unchanged. Since the thickness change of the sheet material 24 is not large, using gears can fully meet the transmission requirements and the structure is simpler.

[0036] As Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the conveyor belt structure 6 further includes a first bracket 31, a second bracket 37, a first bearing block 32, a second bearing block 38, a first adjusting spring 33, a second adjusting spring 39, a first adjusting screw 34 and a second adjusting screw 40. The first bracket 31, the second bracket 37, the first bearing block 32, the second bearing block 38, the first adjusting spring 33, the second adjusting spring 39, the first adjusting screw 34 and the second adjusting screw 40 are all provided with two groups symmetrically arranged on both sides of the conveyor belt 23 to limit the driving roller 18, the auxiliary roller 19, the supporting roller 20 and the heating roller 12. The first bracket 31 and the second bracket 37 are fixed to the frame 9. Both the first transmission assembly 25 and the second transmission assembly 26 are driven by gears. The driving roller 18 is rotatably mounted on the first bracket 31. The first bracket 31 is provided with a first track 35. The auxiliary roller 19 is rotatably mounted on the first bearing block 32 relative to the first bearing block 32. The first bearing block 32 is slidably mounted on the first track 35 relative to the first track 35. One end of the first adjusting spring 33 abuts against the first bearing block 32 and the other end abuts against the first adjusting screw 34. The first bracket 31 is provided with a threaded hole so that the first adjusting screw 34 can be installed in the threaded hole and the deformation amount of the first adjusting spring 33 can be controlled by the installation depth of the first adjusting screw 34. The supporting roller 20 is rotatably mounted on the second bracket 37. The second bracket 37 is provided with a second track 41. The heating roller 12 is rotatably mounted on the second bearing block 38 relative to the second bearing block 38. The second bearing block 38 is slidably mounted on the second track 41 relative to the second track 41. One end of the second adjusting spring 39 abuts against the second bearing block 38 and the other end abuts against the second adjusting screw 40. The second bracket 37 is provided with a threaded hole so that the second adjusting screw 40 can be installed in the threaded hole and the deformation amount of the second adjusting spring 39 can be controlled by the installation depth of the second adjusting screw 40. The first track 35 and the second track 41 can be linear slide rails or sliding tracks in the shape of dovetail grooves and can move along a straight line. A supporting spring 44 is provided at the lower end of the second bearing block 38. One end of the supporting spring 44 abuts against the second bearing block 38 and the other end abuts against the lower end of the second bracket 37. The supporting spring 44 and the second adjusting spring 39 act in opposite directions so that a certain gap is maintained between the supporting roller 20 and the heating roller 12. The size of the gap can be adjusted by rotating the second adjusting screw 40. The first bracket 31 can adopt the same layout design as the second bracket 37 and also be provided with a limiting support spring 45, but the driving roller 18 and the auxiliary roller 19 only need to clamp the conveyor belt 23 and there is no need to set a gap. The first bracket 31 is provided with two arranged at both ends of the driving roller 18 and the auxiliary roller 19. The second bracket 37 is provided with two arranged at both ends of the supporting roller 20 and the heating roller 12. The supporting roller 20, the heating roller 12, the driving roller 18 and the auxiliary roller 19 can be installed and positioned by adopting the same structure.

[0037] As Figure 2 , Figure 3 ,Figure 4 , Figure 5 and Figure 6 As shown in Figure 6 , the track structure 50 is provided with a longitudinal track 51 and a transverse track 52, so that the inkjet structure 53 can print or mark the sheet material 24 within a certain plane range. The track structure 50 is provided with a position sensor to indirectly detect the position of the inkjet structure 53.

[0038] As Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in Figure 6 , a cover plate 55 is provided on the printer frame 54. A round hole is provided in the center of the cover plate 55, and a camera cover 56 is provided above the round hole. The camera is fixed in the camera cover 56 and is located directly above the conveyor belt, so that the sheet material 24 on the conveyor belt can be photographed and identified when the conveyor belt stops moving.

[0039] As Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in Figure 6 , the inkjet structure 53 is provided with a red ink cartridge, a blue ink cartridge, a yellow ink cartridge, and a black ink cartridge. The red ink cartridge, the blue ink cartridge, the yellow ink cartridge, and the black ink cartridge are arranged in two rows and two columns on the ink cartridge holder 61. A circuit board fixing holder 62 is provided beside the ink cartridge holder 61.

[0040] As Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in Figure 6 , a scraping blade 57 and an automatic cleaning device are provided within the moving range of the inkjet structure 53. The feeding device 1 is provided with a vacuum adsorption device to adsorb the sheet material 24. The scraping blade 57 is provided with a rubber scraping blade 58. The scraping blade 57 is provided with a driving cylinder 59 and a sliding track 60, so that the scraping blade 57 moves along the sliding track 60 under the action of the driving cylinder 59. The height in the height direction, i.e., the Z-axis, controls the height of the inkjet structure with a lifting motor. The inkjet structure 53 is spaced a certain distance from the sheet material 24 during inkjet. As a preferred interval, it is within the range of 3 - 5 mm. Using the technical solution of the present application, the flatness of the sheet material is good, and a perfect pattern can be ejected.

[0041] Example 2:

[0042] As Figure 7As shown in the figure, in this embodiment, the feeding device 1 is a conveying disc structure 87. Other structures of the non-feeding device 1 can be designed with reference to Embodiment 1. A frustum-shaped conical hot roller 12 is provided on the conveying disc. The conical hot roller 12 can rotate synchronously with the conveying disc. A vision device 4 and a printing device 3 are also provided above the conveying disc. A conveyor belt 42 and a guiding strip 43 are provided at the rear end of the conveying disc. The guiding strip 43 can guide the sheet material 24 after printing or marking onto the conveyor belt 23. The conveying disc is a rigid structure, so the sheet material 24 has a stable position on the conveying disc and a higher positioning accuracy. The conveying disc is provided with a plurality of suction holes 29, and a semi-circular suction cup 28 is provided below the air holes. The suction cup 28 is arranged below the vision device 4 and the printing device 3.

[0043] Embodiment 3:

[0044] As Figure 8 shown in the figure, in this embodiment, the feeding device 1 is a conveying disc structure 87. Other structures of the non-feeding device 1 can be designed with reference to Embodiment 1. Different from Embodiment 2, the extrusion device 2 and the heating device 5 are integrated together and the bottom is set as a planar structure, that is, an extrusion block 36 driven by a hydraulic cylinder. The extrusion device 2 and the heating device 5 rotate with the conveying disc. The extrusion blocks 36 are circumferentially distributed above the conveying disc. However, a vision device 4 and a printing device 3 are provided above the conveying disc to achieve the same functions. Compared with the prior art, the printing accuracy and speed can be improved, and there are also obvious advantages.

Claims

1. A color printer, characterized in that: It includes a feeding device (1), a material pressing device (7), a vision device (4) and a printing device (3); the feeding device (1) is provided with a conveying structure capable of intermittently moving the sheet material (24) a certain distance; the material pressing device (7) is provided with a pressing structure to make the conveyed sheet material (24) flatter; the vision device (4) is provided with a camera capable of identifying the image or contour of the sheet material (24) in a certain area or position on the feeding device (1); the printing device (3) is provided with an inkjet structure (53) and a track structure (50) capable of moving the inkjet structure (53) to a specified position according to the image or contour identified by the vision device (4) for printing various patterns or marking process position lines. Under the conveyance of the feeding device (1), the sheet material (24) reaches the position of the vision device (4) after passing through the material pressing device (7) for image recognition and printing of lines or patterns.

2. The color printer according to claim 1, characterized in that: The material pressing device (7) at least includes a heating device (5) and a pressing device (2). The heating device (5) is provided with a heat source, and the heat source heats the sheet material (24) by one or more of direct contact, indirect contact, thermal radiation, and heat convection. The heat of the heat source is obtained by one or more of resistance heating, electromagnetic heating, fuel heating, heat pump heating, high-temperature gas or liquid heating; the pressing device (2) is a pressure roller (8) capable of rolling the sheet material, or the pressing device (2) is two planar structures that directly or indirectly press the sheet material through relative movement to make the sheet material flatter under the action of pressure.

3. The color printer according to claim 2, characterized in that: The pressure roller (8) is internally provided with a heating rod (11) so that the pressing device (2) and the heating device (5) form a heat roller (12) with a heating function. The feeding device (1) is a conveyor belt structure (6) directly or indirectly driven by a motor (15).

4. The color printer according to claim 3, characterized in that: The conveyor belt structure (6) includes a driving roller (18), an auxiliary roller (19), a supporting roller (20) and a conveyor belt (23). The driving roller (18) and the auxiliary roller (19) are symmetrically arranged on both sides of the conveyor belt (23) and are close to each other to clamp the conveyor belt (23) and drive the conveyor belt (23) to move. The heat roller (12) and the supporting roller (20) are arranged on the upper and lower sides of the conveyor belt (23) with a certain distance therebetween so that when the sheet material (24) and the conveyor belt (23) move between the heat roller (12) and the supporting roller (20), the heat roller (12) can directly or indirectly press the sheet material (24).

5. The color printer according to claim 4, characterized in that: The driving roller (18) and the auxiliary roller (19) are driven by a first transmission assembly (25), the heating roller (12) and the supporting roller (20) are driven by a second transmission assembly (26), the driving roller (18) and the supporting roller (20) are driven by a chain or a belt and a tensioning wheel (27) is provided to ensure the synchronization of the rotation of the driving roller (18) and the supporting roller (20), and the feeding device (1) is further provided with a speed sensor or a position sensor to detect the speed or displacement of the conveyor belt (23).

6. The color printer according to claim 5, characterized in that: The conveyor belt structure (6) further includes a first bracket (31), a second bracket (37), a first bearing block (32), a second bearing block (38), a first adjusting spring (33), a second adjusting spring (39), a first adjusting screw (34) and a second adjusting screw (40). The first bracket (31) and the second bracket (37) are fixed to the frame (9). Both the first transmission assembly (25) and the second transmission assembly (26) are driven in a gear manner. The driving roller (18) is rotatably mounted on the first bracket (31). The first bracket (31) is provided with a first track (35). The auxiliary roller (19) is rotatably mounted on the first bearing block (32) relative to the first bearing block (32). The first bearing block (32) is slidably mounted on the first track (35) relative to the first track (35). One end of the first adjusting spring (33) abuts against the first bearing block (32) and the other end abuts against the first adjusting screw (34). The first bracket (31) is provided with a threaded hole such that the first adjusting screw (34) can be mounted in the threaded hole and the deformation amount of the first adjusting spring (33) can be controlled by the mounting depth of the first adjusting screw (34). The supporting roller (20) is rotatably mounted on the second bracket (37). The second bracket (37) is provided with a second track (41). The heating roller (12) is rotatably mounted on the second bearing block (38) relative to the second bearing block (38). The second bearing block (38) is slidably mounted on the second track (41) relative to the second track (41). One end of the second adjusting spring (39) abuts against the second bearing block (38) and the other end abuts against the second adjusting screw (40). The second bracket (37) is provided with a threaded hole such that the second adjusting screw (40) can be mounted in the threaded hole and the deformation amount of the second adjusting spring (39) can be controlled by the mounting depth of the second adjusting screw (40).

7. The color printer according to claim 4 or 5 or 6, characterized in that: The track structure (50) is provided with a longitudinal track (51) and a transverse track (52) such that the inkjet structure (53) can print or mark the sheet material (24) within a certain plane range, and the track structure (50) is provided with a position sensor to indirectly detect the position of the inkjet structure (53).

8. The color printer according to claim 7, characterized in that: A cover plate (55) is provided on the printer frame (54). A round hole is provided at the center of the cover plate (55). Above the round hole, there is a camera cover (56). The camera is fixed inside the camera cover (56) and is located directly above the conveyor belt (23) so that when the conveyor belt (23) stops moving, the sheet material (24) on the conveyor belt (23) can be photographed and recognized.

9. The color printer according to claim 8, wherein: The inkjet structure (53) is provided with a red ink cartridge, a blue ink cartridge, a yellow ink cartridge, and a black ink cartridge. The red ink cartridge, the blue ink cartridge, the yellow ink cartridge, and the black ink cartridge are arranged in two rows and two columns.

10. The color printer according to claim 9, characterized in that: A scraping plate (57) and an automatic cleaning device are provided within the moving range of the inkjet structure (53). The feeding device (1) is provided with a vacuum adsorption device. The scraping plate (57) is provided with a rubber blade (58). The scraping plate (57) is provided with a driving cylinder (59) and a sliding track (60) so that the scraping plate (57) moves along the sliding track (60) under the action of the driving cylinder (59).

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