Special-shaped multi-surface fall material high-speed digital color printing machine
By integrating the upper printhead assembly, the side printhead assembly, and the support and adjustment mechanism, the problem of the distance and angle between the printhead and the curved surface in the printing of irregularly shaped materials is solved, realizing efficient and precise multi-faceted printing of irregularly shaped materials, and improving production efficiency and printing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANDONG SAINA PRINTING GRP CO LTD
- Filing Date
- 2026-02-10
- Publication Date
- 2026-04-10
AI Technical Summary
Existing technology cannot guarantee that the printhead maintains the optimal printing distance and angle with the complex curved surface of irregular materials, resulting in decreased printing quality, cumbersome processes, low production efficiency, and inaccurate alignment of patterns on each surface.
It adopts an integrated upper printhead assembly and dual side printhead assemblies, and through a support adjustment assembly and a pitch adjustment mechanism, it can achieve synchronous and continuous printing of the printhead and irregularly shaped materials, ensuring the optimal printing distance and angle. The support adjustment assembly adjusts the conveyor belt to form a local support area through an independently controlled cylinder, and the pitch adjustment mechanism drives the printhead to adapt to complex sides through a motor.
It enables efficient and precise printing on multiple sides of irregularly shaped materials, reducing production time, improving printing efficiency and quality, and adapting to irregularly shaped materials with complex curved surfaces.
Smart Images
Figure CN121821963A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of digital printing equipment technology, and in particular relates to a high-speed digital color printing machine for irregularly shaped multi-faceted materials with varying heights. Background Technology
[0002] In the current digital printing field, the demand for multi-surface digital color printing on irregularly shaped profiles (such as door and window profiles and decorative moldings) is growing, but traditional technologies have significant limitations. Conventional flatbed digital printers are only suitable for flat surfaces and cannot guarantee that the printhead and the complex curved surface of irregularly shaped materials maintain the optimal printing distance and angle, resulting in a decline in print quality. To achieve multi-sided printing, existing solutions mostly adopt a multi-station, multi-operation mode, which has problems such as cumbersome processes, low production efficiency, and inaccurate alignment of patterns on different surfaces. Summary of the Invention
[0003] The purpose of this invention is to provide a high-speed digital color printing machine for irregularly shaped multi-faceted materials with varying elevations, in order to solve the current technical problems of not being able to ensure that the printhead and the complex curved surface of the irregularly shaped material always maintain the best printing distance and angle when printing on irregularly shaped multi-faceted materials with varying elevations, resulting in a decline in printing quality, cumbersome processes, low production efficiency, and inaccurate alignment of patterns on each side.
[0004] To achieve the above objectives, the specific technical solution of the high-speed digital color printing machine for irregularly shaped multi-faceted drop materials of the present invention is as follows: High-speed digital color printing machine for irregularly shaped, multi-faceted, uneven materials, including: an operating platform; A conveying device, installed on the operating platform, is used to continuously convey products to be printed. The conveying plane of the conveying device is formed by splicing together multiple parallel strip conveyor belts. An upper printhead assembly is horizontally disposed above the conveying device for printing on the upper surface of the product; the upper printhead assembly includes a guide rail, a mounting base slidably disposed on the guide rail, a first motor driving the mounting base to move along the guide rail, a first cylinder vertically disposed on the mounting base, and a first printhead mounted on the lower end of the piston rod of the first cylinder; The side nozzle assembly is symmetrically arranged on both sides of the conveying device for printing on both sides of the product; each side nozzle assembly includes a vertically arranged second cylinder, a horizontally arranged third cylinder mounted on the piston rod of the second cylinder, and a second nozzle mounted on the end of the piston rod of the third cylinder. A support adjustment assembly is disposed within the conveying device for locally lifting and adjusting the strip conveyor belt to form a local support area; the support adjustment assembly includes at least one row of support units arranged at intervals perpendicular to the conveying direction; the support unit includes a support frame, a support roller, and a fourth cylinder; the width of the support roller corresponds to at least one of the strip conveyor belts.
[0005] Furthermore, one end of the support frame is rotatably connected to the conveying device frame, and the other end is provided with a support roller, with the middle part hinged to the piston rod of the fourth cylinder; the bottom of the cylinder body of the fourth cylinder is rotatably mounted on the conveying device frame.
[0006] Furthermore, the piston rod end of the third cylinder is connected to the second nozzle via a pitch adjustment mechanism, which is used to drive the second nozzle to adjust its pitch angle.
[0007] Furthermore, the pitch adjustment mechanism includes a swing seat hinged to the end of the piston rod of the third cylinder, and a second motor that drives the swing seat to rotate around the hinge axis, with the second nozzle mounted on the swing seat.
[0008] Furthermore, the support adjustment assembly includes a first row of support units and a second row of support units arranged vertically along the conveying direction, and the working positions of the first nozzle and the second nozzle are located between the first row of support units and the second row of support units.
[0009] Furthermore, the fourth cylinder in each row of support units can be controlled independently.
[0010] Furthermore, the swing angle range of the pitch adjustment mechanism is ±30 degrees.
[0011] Furthermore, the strip conveyor belt is made of polyurethane or rubber with anti-slip texture.
[0012] A method for printing using a high-speed digital color printer with irregularly shaped multi-faceted drop materials includes the following steps: S1: Based on the cross-sectional width of the product to be printed, control the fourth cylinder in the corresponding position of the support adjustment assembly to start, support the support frame, raise the support roller, and lift the corresponding strip conveyor belt to form a locally raised support area on the conveying device. S2: The product is fed into the support area of the partially raised section via a conveying device; S3: The side nozzle assembly adjusts the height and horizontal distance of the second nozzle according to the side profile of the product by means of the second cylinder and the third cylinder; S4: The upper nozzle assembly adjusts the lateral position and height of the first nozzle through the first motor and the first cylinder; S5: The first printhead and the two second printheads start synchronously to perform one-time multi-sided digital printing on the upper surface and two sides of the product.
[0013] Furthermore, in step S3, the pitch angle of the second nozzle is adjusted by the pitch adjustment mechanism to adapt to the irregular contour of the non-vertical side of the product.
[0014] The high-speed digital color printing machine for irregularly shaped, multi-faceted, uneven materials of this invention has the following advantages: By integrating the upper nozzle assembly and the two side nozzle assemblies, this technology can simultaneously complete digital color printing on the upper surface and both sides of the product during a single continuous conveying process. This changes the inefficient mode of traditional processes that require multiple positioning and side printing, and combines multiple processes into one, significantly reducing production time and greatly improving the efficiency and capacity of decorative processing of irregularly shaped materials. For irregularly shaped materials with drops, slopes, or non-vertical sides, the side nozzle assembly uses the second and third cylinders to position different spraying positions, and the pitch adjustment mechanism (swing seat and second motor) can drive the nozzle to rotate around the axis, so that the second nozzle can actively conform to the actual contour of the product side, maintain the best spraying angle and distance during operation, and ensure that clear, uniform, and high-quality printing effects can be obtained on complex surfaces such as trapezoids and arcs. By controlling the fourth cylinder at a specific position, the support frame and support roller can be driven to partially lift the corresponding strip conveyor belt, thereby forming a "bridge"-shaped raised support area on the conveying plane. While stabilizing the product, it provides uninterrupted working space for the spray nozzles on both sides, enabling direct and precise spraying of the product sides on a continuous production line, avoiding the obstruction of the spray nozzle path by the support of the traditional conveyor belt. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of region A in the middle; Figure 3 For the present invention Figure 1 Enlarged view of region B in the middle; Figure 4 This is a schematic diagram of the internal support unit structure of the conveying device of the present invention; Figure 5 For the present invention Figure 4 Enlarged diagram of region C in the middle; The markings in the diagram are as follows: 1. Operating platform; 2. Conveying device; 3. Strip conveyor belt; 4. Guide rail; 5. Mounting base; 6. First motor; 7. First cylinder; 8. First nozzle; 9. Second cylinder; 10. Third cylinder; 11. Second nozzle; 12. Support frame; 13. Support roller; 14. Fourth cylinder; 15. Swing seat; 16. Second motor. Detailed Implementation
[0016] To better understand the purpose, structure, and function of this invention, the high-speed digital color printing machine for irregularly shaped multi-faceted drop materials of this invention will be described in further detail below with reference to the accompanying drawings.
[0017] like Figure 1-5 As shown, the high-speed digital color printing machine for irregularly shaped multi-faceted drop materials of the present invention includes: an operating platform 1; The conveying device 2 is set on the operating platform 1 and is used to continuously convey the products to be printed. The conveying plane of the conveying device 2 is formed by splicing together multiple parallel strip conveyor belts 3. The upper printhead assembly is horizontally positioned above the conveying device 2 and is used to print on the upper surface of the product. The upper printhead assembly includes a guide rail 4, a mounting base 5 slidably positioned on the guide rail 4, a first motor 6 that drives the mounting base 5 to move along the guide rail 4, a first cylinder 7 vertically positioned on the mounting base 5, and a first printhead 8 mounted on the lower end of the piston rod of the first cylinder 7. The side nozzle assembly is symmetrically arranged on both sides of the conveying device 2 for printing on both sides of the product; each side nozzle assembly includes a vertically arranged second cylinder 9, a horizontally arranged third cylinder 10 installed on the piston rod of the second cylinder 9, and a second nozzle 11 installed at the end of the piston rod of the third cylinder 10. A support adjustment assembly is disposed within the conveying device 2 for locally lifting and adjusting the strip conveyor belt 3 to form a local support area; the support adjustment assembly includes at least one row of support units arranged at intervals perpendicular to the conveying direction; the support unit includes a support frame 12, a support roller 13 and a fourth cylinder 14; the width of the support roller 13 corresponds to at least one of the strip conveyor belts 3.
[0018] Combination Figure 1-5 As shown, the present invention includes an operating platform 1, a conveying device 2, an upper nozzle assembly, a side nozzle assembly, and a support and adjustment assembly. The conveying plane of the conveying device 2 is formed by splicing multiple parallel strip conveyor belts 3, which can adapt to the conveying of products of different widths. The upper nozzle assembly spans above the conveying device 2 and moves laterally through the mounting base 5 on the guide rail 4 and its driving first motor 6. The height of the first nozzle 8 is adjusted by the first cylinder 7, thereby accurately adapting to the height of the upper surface of the product for printing. The side nozzle assemblies are symmetrically arranged on both sides of the conveying device 2. Each side is respectively controlled by a vertically arranged second cylinder 9 and a horizontally arranged third cylinder 10. The height and horizontal distance of the second nozzle 11 are adjusted to achieve printing on the side of the product. The support adjustment component is located inside the conveying device 2 and includes at least one row of support units arranged at intervals perpendicular to the conveying direction. Each support unit includes a support frame 12, a support roller 13 and a fourth cylinder 14. The width of the support roller 13 corresponds to at least one strip conveyor belt 3 and is used to locally lift the strip conveyor belt 3 to form a raised support area. In the continuous conveying process, the upper nozzle and the two side nozzles can work synchronously to complete high-quality printing on the upper surface and two sides of the product in one go, improving the efficiency and accuracy of multi-sided printing of irregular cross-section materials.
[0019] like Figure 1-3 As shown, the piston rod end of the third cylinder 10 is connected to the second printhead 11 via a pitch adjustment mechanism. The pitch adjustment mechanism is used to drive the second printhead 11 to adjust its pitch angle. The pitch adjustment mechanism includes a swing seat 15 hinged to the piston rod end of the third cylinder 10, and a second motor 16 that drives the swing seat 15 to rotate around the hinge axis. The second printhead 11 is mounted on the swing seat 15. The second motor 16 drives and controls the swing seat 15 to rotate at the piston rod end of the third cylinder 10, thereby achieving precise adjustment of the pitch angle of the second printhead 11. This allows the invention to adapt to complex product side shapes for printing, improving applicability and printing quality. The swing angle range of the pitch adjustment mechanism is ±30 degrees, covering common inclined and curved sides. While ensuring structural stability, it provides sufficient angle adjustment margin to ensure that the printhead always maintains an ideal printing angle with the product side.
[0020] like Figure 4-5 As shown, one end of the support frame 12 is rotatably connected to the frame of the conveying device 2, and the other end is provided with a support roller 13. The middle part is hinged to the piston rod of the fourth cylinder 14. The bottom of the cylinder body of the fourth cylinder 14 is rotatably mounted on the frame of the conveying device 2. The fourth cylinder 14 pushes the support frame 12 to rotate around the hinge point, smoothly lifting the support roller 13 and the corresponding strip conveyor belt 3 to form a locally raised support area, providing an interference-free working space for the side spraying of the product, and ensuring the stability and accuracy of the side printing.
[0021] The support adjustment assembly includes a first row of support units and a second row of support units arranged vertically along the conveying direction. The working positions of the first nozzle 8 and the second nozzle 11 are located between the first row of support units and the second row of support units. The fourth cylinder 14 in each row of support units can be independently controlled. Through the arrangement of the double-row support units, the conveying device 2 forms stable support points before and after the printing area, ensuring that the product remains stable during the printing process and avoiding the impact of suspension or shaking on printing accuracy. The strip conveyor belt 3 at the corresponding position can be selectively raised according to the product cross-sectional width, flexibly forming a support area that matches the product width, enhancing the equipment's adaptability to products of different specifications.
[0022] The strip conveyor belt 3 is made of polyurethane or rubber with anti-slip texture, which has good wear resistance, flexibility and anti-slip performance. It can not only ensure the stability of product conveying, but also adapt to the local lifting action of the support roller 13, reducing slippage or wear.
[0023] A method for printing using a high-speed digital color printer with irregularly shaped multi-faceted drop materials includes the following steps: S1: According to the cross-sectional width of the product to be printed, control the fourth cylinder 14 in the corresponding position of the support adjustment assembly to start, support the support frame 12, raise the support roller 13, and lift the corresponding strip conveyor belt 3, so that a locally raised support area is formed on the conveying device 2. S2: The product is fed into the support area of the partially raised section via the conveying device 2; S3: The side spray nozzle assembly adjusts the height of the second spray nozzle 11 and the horizontal distance from the side of the product to be sprayed by the second cylinder 9 and the third cylinder 10 according to the side profile of the product. S4: The upper nozzle assembly adjusts the lateral position and height of the first nozzle 8 through the first motor 6 and the first cylinder 7; S5: The first printhead 8 and the two second printheads 11 start synchronously to perform one-time multi-sided digital printing on the upper surface and two sides of the product.
[0024] In step S3, the pitch angle of the second nozzle 11 is also adjusted by the pitch adjustment mechanism to adapt to the irregular contour of the non-vertical side of the product.
[0025] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.
Claims
1. A high-speed digital color printing machine for anisotropic multi-faceted relief material, characterized in that, The application relates to a printing device for printing on the upper surface and two side surfaces of a product. The printing device comprises an operation platform (1), a conveying device (2) arranged on the operation platform (1) and used for continuously conveying the product to be printed, wherein the conveying plane of the conveying device (2) is formed by a plurality of strip-shaped conveying belts (3) arranged in parallel, an upper nozzle assembly arranged above the conveying device (2) and used for printing on the upper surface of the product, wherein the upper nozzle assembly comprises a guide rail (4), a mounting base (5) slidingly arranged on the guide rail (4), a first motor (6) used for driving the mounting base (5) to move along the guide rail (4), a first cylinder (7) vertically arranged on the mounting base (5), and a first nozzle (8) arranged at the lower end of the piston rod of the first cylinder (7), a side nozzle assembly arranged symmetrically on the two sides of the conveying device (2) and used for printing on the two side surfaces of the product, wherein each side nozzle assembly comprises a second cylinder (9) arranged vertically, a third cylinder (10) arranged horizontally and arranged on the piston rod of the second cylinder (9), and a second nozzle (11) arranged at the end of the piston rod of the third cylinder (10), a support adjusting assembly arranged in the conveying device (2) and used for locally lifting and adjusting the strip-shaped conveying belts (3) to form a locally convex support area, wherein the support adjusting assembly comprises at least one row of support units arranged vertically and spaced apart along the conveying direction, wherein each support unit comprises a support frame (12), a support roller (13) and a fourth cylinder (14), and the width of the support roller (13) corresponds to at least one of the strip-shaped conveying belts (3). One end of the support frame (12) is rotationally connected to the rack of the conveying device (2), the other end is provided with the support roller (13), and the middle part is hingedly connected to the piston rod of the fourth cylinder (14), and the bottom of the cylinder body of the fourth cylinder (14) is rotationally arranged on the rack of the conveying device (2). The end of the piston rod of the third cylinder (10) is connected to the second nozzle (11) through a pitch adjusting mechanism, and the pitch adjusting mechanism is used for driving the second nozzle (11) to adjust the pitch angle. The pitch adjusting mechanism comprises a swing base (15) hingedly connected to the end of the piston rod of the third cylinder (10), and a second motor (16) used for driving the swing base (15) to rotate around the hinge shaft, and the second nozzle (11) is arranged on the swing base (15). The support adjusting assembly comprises a first row of support units and a second row of support units arranged vertically along the conveying direction, and the working positions of the first nozzle (8) and the second nozzle (11) are located between the first row of support units and the second row of support units.
2. The high-speed digital color printing machine for special-shaped multi-faceted drop difference materials according to claim 1, characterized in that, The fourth cylinders (14) in each row of support units can be independently controlled.
3. The high-speed digital color printing machine for special-shaped multi-faceted drop difference materials according to claim 1, characterized in that, The swing angle range of the pitch adjusting mechanism is + / -30 degrees.
4. The high-speed digital color printing machine of claim 3, wherein the irregularly shaped multi-faceted relief material is a multi-faceted relief material having a plurality of facets, each facet having a different height, and the plurality of facets are arranged in a pattern. The material of the strip-shaped conveying belts (3) is polyurethane or rubber embedded with anti-skid textures.
5. The high-speed digital color printing machine of claim 1, wherein the irregularly shaped multi-faceted relief material is a paper-based material. The printing device comprises the following steps:
6. The high-speed digital color printing machine of claim 5, wherein the irregularly shaped multi-faceted relief material is a multi-faceted relief material having a plurality of facets, each facet having a different height, and the plurality of facets are arranged in a pattern. S1: according to the cross-sectional width of the product to be printed, the fourth cylinders (14) at the corresponding positions in the support adjusting assembly are controlled to be started, the support frames (12) are lifted, the support rollers (13) are lifted, the corresponding strip-shaped conveying belts (3) are lifted, and the conveying device (2) forms a locally convex support area.
7. The high-speed digital color printing machine of claim 4, wherein the irregularly shaped multi-faceted relief material is a paper-based material. 8. The high-speed digital color printing machine of claim 1, wherein, 9. A method of printing using the high speed digital color printer of the irregular multi-faceted relief material of any one of claims 1-8, characterized in that, S2: The product is sent into the local convex support area by the conveying device (2); S3: The side nozzle assembly adjusts the height and horizontal distance of the second nozzle (11) according to the product side profile through the second cylinder (9) and the third cylinder (10); S4: The upper nozzle assembly adjusts the transverse position and height of the first nozzle (8) through the first motor (6) and the first cylinder (7); S5: The first nozzle (8) and the two second nozzles (11) are synchronously started to perform one-time multi-surface digital printing on the upper surface and two side surfaces of the product.
10. The printing method according to claim 9, characterized by, In step S3, the pitch angle of the second nozzle (11) is also adjusted by the pitch adjusting mechanism to adapt to the special profile of the non-vertical side surface of the product.