A steel sheet full-width heterogeneous printing device

Abstract

This invention discloses a full-width heterogeneous inkjet printing device for steel plates, relating to the field of steel plate inkjet printing technology. The device includes a housing, vertical adjustment components, a first printhead assembly, and a second printhead assembly. One end of the housing is open, and a central frame is provided inside. A set of vertical adjustment components is provided on each side of the central frame. The fixed end of each vertical adjustment component is connected and fixed to the central frame, while the movable end of the vertical adjustment component can move in a direction perpendicular to the plane of the housing opening. The first printhead assembly is connected to the movable end of one set of vertical adjustment components, and the second printhead assembly is connected to the movable end of the other set of vertical adjustment components. This invention can adapt to the warping deformation of steel plates and improve printing efficiency.

Description

Technical Field

[0001] This invention relates to the field of steel plate inkjet printing technology, and in particular to a full-width heterogeneous inkjet printing device for steel plates. Background Technology

[0002] In the shipbuilding industry, steel plates are a primary construction material, making their management and traceability crucial. Traditionally, steel plate marking has relied on manual handwriting, template spraying, or stamping. These methods are not only inefficient and labor-intensive, but also prone to problems such as blurred or detached markings and errors, failing to meet the high demands of modern intelligent shipyards for production efficiency and quality management. With the development of automation technology, automated inkjet printing systems have begun to be applied to the marking of ship steel plates.

[0003] The printhead of existing automated inkjet printing equipment is at a fixed height from the steel plate. When encountering uneven steel plate surfaces, this can easily lead to blurry printing or damage to the printhead, and it cannot adapt to the warping and deformation of the steel plate. Furthermore, the printing efficiency of existing automated inkjet printing equipment is low.

[0004] In view of the problems existing in the prior art, those skilled in the art urgently need a steel plate full-width heterogeneous inkjet printing device.

[0005] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a full-width heterogeneous inkjet printing device for steel plates to solve the problems existing in the prior art, which can adapt to the warping and deformation of steel plates and improve printing efficiency.

[0007] To achieve the above objectives, the present invention provides the following solution: This invention provides a full-width heterogeneous inkjet printing device for steel plates, comprising a housing, a vertical adjustment assembly, a first printhead assembly, and a second printhead assembly. One end of the housing is open, and a central frame is provided inside. A set of vertical adjustment assemblies is provided on each side of the central frame. The fixed end of each vertical adjustment assembly is connected and fixed to the central frame, and the movable end of each vertical adjustment assembly can move in a direction perpendicular to the plane of the housing opening. The first printhead assembly is connected to the movable end of one set of vertical adjustment assemblies, and the second printhead assembly is connected to the movable end of the other set of vertical adjustment assemblies.

[0008] In some embodiments, the first printhead assembly is a line-printing printhead assembly, and the second printhead assembly is a QR code printing printhead assembly.

[0009] In some embodiments, both the first and second nozzle assemblies include a nozzle assembly frame, a fixed nozzle assembly, a movable nozzle, and a lateral adjustment assembly. The nozzle assembly frame is connected to the movable end of the lateral adjustment assembly. The nozzle assembly frame is provided with the fixed nozzle assembly and the movable nozzle. The fixed nozzle assembly includes a plurality of fixed nozzles arranged along a direction parallel to the width direction. The fixed end of the lateral adjustment assembly is fixedly connected to the nozzle assembly frame, and the movable end of the lateral adjustment assembly is movable along a direction parallel to the arrangement direction of the plurality of fixed nozzles. The movable nozzle is connected to the movable end of the lateral adjustment assembly.

[0010] In some embodiments, both the first nozzle assembly and the second nozzle assembly include two rows of the fixed nozzle groups; the arrangement direction of the plurality of fixed nozzles in the two rows of fixed nozzle groups is parallel, and the plurality of fixed nozzles in the two rows of fixed nozzle groups are arranged side by side and staggered in the same plane.

[0011] In some embodiments, the system also includes ink cartridge groups; one ink cartridge group is provided on each side of the central frame, and the ink cartridge group includes multiple ink cartridges; one ink cartridge group is located above the first printhead assembly for supplying ink to the first printhead assembly, and the other ink cartridge group is located above the second printhead assembly for supplying ink to the second printhead assembly.

[0012] In some embodiments, the nozzle assembly frame includes a vertical frame and a horizontal frame; the vertical frame is used to connect and fix to the movable end of the vertical adjustment component; the horizontal frame has multiple fixed nozzles and movable nozzles, and the multiple fixed nozzles are adapted and connected to the multiple fixed nozzles one by one; the movable nozzles are elongated and their length direction is parallel to the arrangement direction of the multiple fixed nozzles, and the movable nozzles can slide along the length direction of the movable nozzles.

[0013] In some embodiments, the vertical adjustment assembly includes a first drive motor, a first ball screw, a vertical guide rail, and a first slider; a first support seat is provided on the central frame, and the two ends of the first ball screw are respectively rotatably connected to the corresponding first support seat; the vertical guide rail is arranged perpendicular to the plane of the housing opening, the first slider is slidably connected to the vertical guide rail, and the first slider is connected to the first nozzle assembly or the second nozzle assembly; the first drive motor is driven by the first ball screw to drive its rotation, and the first ball screw can drive the first slider to slide along the vertical guide rail.

[0014] In some embodiments, the lateral adjustment assembly includes a second drive motor, a second ball screw, a lateral guide rail, and a second slider; the nozzle assembly frame is provided with a second support seat, and the two ends of the second ball screw are respectively rotatably connected to the corresponding second support seat; the lateral guide rail is arranged along the parallel width direction, the second slider is slidably connected to the lateral guide rail, and the second slider is connected to the movable nozzle; the second drive motor is driven by the second ball screw to drive its rotation, and the second ball screw can drive the second slider to slide along the lateral guide rail.

[0015] In some embodiments, the movable nozzle is arranged adjacent to the plurality of fixed nozzles in the same plane, and the movable nozzle is movable to a corresponding position alongside any of the fixed nozzles in the two rows of fixed nozzle groups.

[0016] In some embodiments, the bottom end of the housing has an opening and the opening plane is horizontal, the movable end of the vertical adjustment component can move in the vertical direction, and the movable end of the horizontal adjustment component can move in the horizontal direction.

[0017] The present invention achieves the following technical effects compared to the prior art: First, the steel plate full-width heterogeneous inkjet printing device of the present invention has two sets of vertical adjustment components on both sides of the central frame. The movable ends of the two sets of vertical adjustment components respectively drive the first printhead assembly and the second printhead assembly to move up and down along the direction of the vertical opening plane. When the steel plate to be printed has warping deformation, the vertical height of the printhead assembly is adjusted by the vertical adjustment components during printing, thereby adjusting the height of the printhead from the steel plate. The vertical adjustment components can improve the adaptability of the inkjet printing device to the warping deformation of the steel plate. Furthermore, the present invention simultaneously sets the first printhead assembly and the second printhead assembly, which can realize two printing operations such as line drawing and text printing and QR code assignment in one go, improving printing efficiency.

[0018] Second, both the first and second printhead assemblies of the present invention include multiple fixed printheads and movable printheads. When any fixed printhead fails or malfunctions, the position of the movable printhead can be adjusted so that the movable printhead moves to a corresponding position parallel to the fixed printhead, replacing the fixed printhead that has failed or malfunctioned. By adding redundant structures for different types of printheads, the present invention can improve the fault tolerance of the printing device and realize the continuous operation of the printing device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the full-width heterogeneous inkjet printing device for steel plates in some embodiments of the present invention; Figure 2 This is a top view of the full-width heterogeneous inkjet printing device for steel plates in some embodiments of the present invention, with the outer shell and ink cartridge assembly removed. Figure 3 This is a schematic diagram showing the connection between the nozzle assembly frame and the lateral adjustment component in some embodiments of the present invention; Figure 4 This is a schematic diagram showing the connection between the central frame and the vertical adjustment component in some embodiments of the present invention; In the diagram: 1-Printing device frame; 2-Ink cartridge assembly; 3-Vertical adjustment component; 4-First printhead assembly; 5-Second printhead assembly; 6-Printhead assembly frame; 7-Horizontal adjustment component; 8-Fixed printhead; 9-Moving printhead; 11-Outer shell; 12-Central frame; 31-First drive motor; 32-First slider; 33-Vertical guide rail; 61-Fixed nozzle; 62-Moving nozzle; 71-Second drive motor; 72-Second slider; 73-Horizontal guide rail. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The purpose of this invention is to provide a full-width heterogeneous inkjet printing device for steel plates to solve the problems existing in the prior art, which can adapt to the warping and deformation of steel plates and improve printing efficiency.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] This invention provides a full-width heterogeneous inkjet printing device for steel plates, such as... Figures 1 to 4As shown, it includes a housing 11, a vertical adjustment assembly 3, a first nozzle assembly 4, and a second nozzle assembly 5. One end of the housing 11 is open and a central frame 12 is provided inside. A set of vertical adjustment assemblies 3 are respectively provided on both sides of the central frame 12. The fixed end of the vertical adjustment assembly 3 is connected and fixed to the central frame 12, and the movable end of the vertical adjustment assembly 3 can move in a direction perpendicular to the plane of the opening of the housing 11. The first nozzle assembly 4 is connected to the movable end of the set of vertical adjustment assemblies 3, and the second nozzle assembly 5 is connected to the movable end of the other set of vertical adjustment assemblies 3.

[0025] It should be noted that the printing device frame 1 of the present invention includes an outer shell 11 and a central frame 12, serving as the main structure of the printing device. The outer shell 11 is a semi-enclosed shell, which can be constructed from acrylic sheets and aluminum profiles, with one end open to facilitate printing operations. The central frame 12 is arranged perpendicular to the plane of the opening of the outer shell 11 and parallel to the printing width direction. A set of fixed ends of vertical adjustment components 3 are connected to the front and rear sides of the central frame 12. The movable ends of the two sets of vertical adjustment components 3 are respectively connected to the first printhead assembly 4 and the second printhead assembly 5. By adjusting the height of the printheads from the steel plate, the height of the printheads can be improved to accommodate the warping deformation of the steel plate. Furthermore, by setting the first printhead assembly 4 and the second printhead assembly 5 with a front-to-back spacing along the vertical printing width direction, the present invention enables two printing operations to be completed simultaneously, improving printing efficiency.

[0026] In some embodiments, the first printhead assembly 4 is a line-printing printhead group, and the second printhead assembly 5 is a QR code printing printhead group. Both the QR code printing printhead group and the line-printing printhead group of the present invention use high-precision printheads as the main printing body of the printing device; the printing precision of the QR code printing printhead group is greater than that of the line-printing printhead group, and the nozzle aperture of the QR code printing printhead group can be configured to be smaller than that of the line-printing printhead group; under the same printing width conditions, the number of printheads in the QR code printing printhead group is greater than the number of printheads in the line-printing printhead group.

[0027] In some embodiments, such as Figure 2 As shown, both the first printhead assembly 4 and the second printhead assembly 5 include a printhead frame 6, a fixed printhead assembly, a movable printhead 9, and a lateral adjustment assembly 7. The printhead frame 6 is connected to the movable end of the vertical adjustment assembly 3. The printhead frame 6 is equipped with a fixed printhead assembly and a movable printhead 9. The fixed printhead assembly includes multiple fixed printheads 8, which are arranged parallel to the width direction. The fixed end of the lateral adjustment assembly 7 is fixedly connected to the printhead frame 6, and the movable end of the lateral adjustment assembly 7 can move in a direction parallel to the arrangement direction of the multiple fixed printheads 8. The movable printhead 9 is connected to the movable end of the lateral adjustment assembly 7. In this invention, the arrangement direction of the multiple fixed printheads 8 is parallel to the opening plane of the outer casing 11; the printing width direction is... Figure 2The left and right directions in the middle.

[0028] In some embodiments, such as Figure 2 As shown, both the first printhead assembly 4 and the second printhead assembly 5 include two rows of fixed printhead groups; the multiple fixed printheads 8 in the two rows of fixed printhead groups are arranged in parallel directions, and the multiple fixed printheads 8 in the two rows of fixed printhead groups are arranged side by side and staggered in the same plane. This invention, by setting two rows of fixed printhead groups arranged side by side and staggered, with the two rows of fixed printhead groups arranged front and back along the direction perpendicular to the printing width, and the fixed printheads 8 in the second row of fixed printhead groups located on the rear side corresponding to the positions between two adjacent fixed printheads 8 in the first row of fixed printhead groups on the front side, allows the printing areas of the two rows of fixed printhead groups to fill in and cover each other, eliminating blank gaps in the printing width.

[0029] It should be noted that the first printhead assembly 4 and the second printhead assembly 5 of the present invention have similar structures, both including two rows of fixed printhead groups, a movable printhead 9, and a printhead group frame 6; the two rows of fixed printhead groups are staggered and fixed to the printhead group frame 6 to achieve full-range printing across the horizontal sweep range; the movable printhead 9 can move in a controlled manner along the arrangement direction of the fixed printheads 8, and the range of movement includes the corresponding positions of all fixed printheads 8; the movable printhead 9 serves as a redundant structure, and can replace a failed or abnormally operating printhead when a fixed printhead 8 fails or malfunctions, thereby improving the fault tolerance of the printing device and enabling continuous operation of the device.

[0030] In some embodiments, such as Figure 1 As shown, it also includes ink cartridge group 2; an ink cartridge group 2 is provided on each side of the central frame 12, and the ink cartridge group 2 includes multiple ink cartridges; one ink cartridge group 2 is located above the first printhead assembly 4 for supplying ink to the first printhead assembly 4, and the other ink cartridge group 2 is located above the second printhead assembly 5 for supplying ink to the second printhead assembly 5. The ink cartridge group 2 of the present invention consists of two rows of ink cartridges fixed to the central frame 12, with space left in the middle for the corresponding vertical adjustment components 3, and is located above the line-printing printhead group and the QR code printing printhead group; the two rows of ink cartridges are respectively connected to the corresponding printhead groups for supplying ink to the line-printing printhead group and the QR code printing printhead group.

[0031] In some embodiments, such as Figure 4 As shown, the nozzle assembly frame 6 includes a vertical frame and a horizontal frame; the vertical frame is used to connect and fix to the movable end of the vertical adjustment component 3; the horizontal frame has multiple fixed nozzles 61 and movable nozzles 62, and the multiple fixed nozzles 61 are adapted and connected to multiple fixed nozzles 8 one by one; the movable nozzles 62 are elongated and their length direction is parallel to the arrangement direction of the multiple fixed nozzles 8, and the movable nozzles 9 can slide along the length direction of the movable nozzles 62.

[0032] In some embodiments, such as Figure 1 and Figure 3As shown, the vertical adjustment assembly 3 includes a first drive motor 31, a first ball screw, a vertical guide rail 33, and a first slider 32. A first support seat is provided on the central frame 12, and the two ends of the first ball screw are rotatably connected to the corresponding first support seat. The vertical guide rail 33 is arranged perpendicular to the opening plane of the outer casing 11. The first slider 32 is slidably connected to the vertical guide rail 33 and is connected to either the first nozzle assembly 4 or the second nozzle assembly 5. The first drive motor 31 is driven by the first ball screw to drive its rotation, and the first ball screw can drive the first slider 32 to slide along the vertical guide rail. The vertical adjustment assembly 3 of this invention is powered by the first drive motor 31, which drives the first ball screw to rotate. The screw nut of the first ball screw is connected to the first slider 32 to drive the first slider 32 to move in the vertical direction. Simultaneously, the first drive motor 31 has a power-off self-locking function to prevent damage to the nozzle due to abnormal power failure.

[0033] In some embodiments, such as Figure 4 As shown, the lateral adjustment assembly 7 includes a second drive motor 71, a second ball screw, a lateral guide rail 73, and a second slider 72. A second support seat is provided on the nozzle assembly frame 6, and the two ends of the second ball screw are rotatably connected to the corresponding second support seats. The lateral guide rail 73 is arranged parallel to the width direction, and the second slider 72 is slidably connected to the lateral guide rail 73 and connected to the movable nozzle 9. The second drive motor 71 is driven by the second ball screw to drive its rotation, and the second ball screw can drive the second slider 72 to slide along the lateral guide rail 73. In this invention, the screw nut of the second ball screw is connected to the second slider 72 to drive the second slider 72 to slide along the lateral guide rail 73.

[0034] In some embodiments, such as Figure 2 As shown, the movable nozzle 9 and multiple fixed nozzles 8 are arranged adjacent to each other on the same plane, and the movable nozzle 9 can be moved to a corresponding position alongside any of the fixed nozzles 8 in the two rows of fixed nozzle groups. The lateral adjustment component 7 of the present invention is powered by a second drive motor 71, which drives a second ball screw to rotate, thereby driving a second slider 72 to move, thus controlling the movable nozzle 9 to the position corresponding to each fixed nozzle 8.

[0035] In some embodiments, the bottom end of the housing 11 is provided with an opening and the opening plane is a horizontal plane, the movable end of the vertical adjustment component 3 can move in the vertical direction, and the movable end of the horizontal adjustment component 7 can move in the horizontal direction.

[0036] In use, the steel plate full-width heterogeneous inkjet printing device of the present invention moves relative to the steel plate to be printed along the feeding direction. The inkjet printing device performs full-width inkjet printing on the steel plate. The first printhead assembly 4 and the second printhead assembly 5 are arranged at a front-to-back distance along the vertical width direction, which is perpendicular to the feeding direction. The printing width direction is... Figure 2 The left and right directions, the material feeding direction is Figure 2 The printing process involves two nozzles: the first nozzle assembly 4 is a line-printing nozzle group, and the second nozzle assembly 5 is a QR code printing nozzle group. By improving the nozzle configuration, line-printing and QR code printing can be performed simultaneously, improving printing efficiency. When the steel plate to be printed is warped, the two sets of vertical adjustment components 3 move the first nozzle assembly 4 and the second nozzle assembly 5 to adjust the distance between the nozzles and the steel plate, improving the printing device's adaptability to warping deformation. When a fixed nozzle 8 fails or malfunctions, the horizontal adjustment component 7 moves the movable nozzle 9 to the position corresponding to the fixed nozzle 8. By adjusting the inkjet timing of the movable nozzle 9, it can replace the fixed nozzle 8 for inkjet printing. The movable nozzle 9 serves as a redundant structure, improving the fault tolerance of the printing device and enabling continuous operation.

[0037] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A steel sheet full-width heterogeneous jet printing apparatus characterized by comprising: It includes a housing, a vertical adjustment assembly, a first nozzle assembly, and a second nozzle assembly; One end of the outer shell is open and a central frame is provided inside. A set of vertical adjustment components is provided on both sides of the central frame. The fixed end of the vertical adjustment component is connected and fixed to the central frame, and the movable end of the vertical adjustment component can move in a direction perpendicular to the plane of the opening of the outer shell. The first nozzle assembly is connected to the movable end of one set of vertical adjustment components, and the second nozzle assembly is connected to the movable end of another set of vertical adjustment components.

2. The steel sheet full-width heterogeneous jet printing apparatus according to claim 1, characterized by, The first printhead assembly is a line-printing printhead assembly, and the second printhead assembly is a QR code printing printhead assembly.

3. The steel sheet full-width heterogeneous jet printing apparatus according to claim 1, characterized by, Both the first nozzle assembly and the second nozzle assembly include a nozzle assembly frame, a fixed nozzle assembly, a movable nozzle, and a lateral adjustment assembly; The nozzle assembly frame is connected to the movable end of the vertical adjustment component. The nozzle assembly frame is provided with the fixed nozzle assembly and the movable nozzle. The fixed nozzle assembly includes a plurality of fixed nozzles arranged along the parallel width direction. The fixed end of the lateral adjustment component is connected and fixed to the nozzle assembly frame, and the movable end of the lateral adjustment component can move in a direction parallel to the arrangement direction of the multiple fixed nozzles. The movable nozzle is connected to the movable end of the lateral adjustment component.

4. The steel sheet full-width heterogeneous jet printing apparatus according to claim 3, characterized by Both the first nozzle assembly and the second nozzle assembly include two rows of the fixed nozzle groups; The fixed nozzles of the two rows of fixed nozzle groups are arranged in parallel directions, and the fixed nozzles of the two rows of fixed nozzle groups are arranged side by side and staggered in the same plane.

5. The steel sheet full-width heterogeneous jet printing apparatus according to claim 1, characterized by, It also includes ink cartridge sets; A set of ink cartridge groups is provided on each side of the central frame, and the ink cartridge group includes multiple ink cartridges; One set of ink cartridges is located above the first printhead assembly for supplying ink to the first printhead assembly, and another set of ink cartridges is located above the second printhead assembly for supplying ink to the second printhead assembly.

6. The steel plate full-width heterogeneous inkjet printing device according to claim 3, characterized in that, The nozzle assembly frame includes a vertical frame and a horizontal frame; The vertical frame is used to connect and fix to the movable end of the vertical adjustment component; The transverse frame is provided with multiple fixed nozzles and movable nozzles. The multiple fixed nozzles are adapted and connected to the multiple fixed nozzles one by one. The movable nozzles are elongated and their length direction is parallel to the arrangement direction of the multiple fixed nozzles. The movable nozzles can slide along the length direction of the movable nozzles.

7. The steel plate full-width heterogeneous inkjet printing device according to claim 1, characterized in that, The vertical adjustment assembly includes a first drive motor, a first ball screw, a vertical guide rail, and a first slider; The central frame is provided with a first support seat, and the two ends of the first ball screw are respectively rotatably connected to the corresponding first support seat; the vertical guide rail is arranged perpendicular to the plane of the outer shell opening, the first slider is slidably connected to the vertical guide rail, and the first slider is connected to the first nozzle assembly or the second nozzle assembly. The first drive motor is connected to the first ball screw for driving its rotation, and the first ball screw can drive the first slider to slide along the vertical guide rail.

8. The steel plate full-width heterogeneous inkjet printing device according to claim 3, characterized in that, The lateral adjustment assembly includes a second drive motor, a second ball screw, a lateral guide rail, and a second slider. The nozzle assembly frame is provided with a second support seat, and the two ends of the second ball screw are respectively rotatably connected to the corresponding second support seat; the transverse guide rail is arranged along the parallel width direction, the second slider is slidably connected to the transverse guide rail, and the second slider is connected to the movable nozzle; The second drive motor is connected to the second ball screw for driving its rotation, and the second ball screw can drive the second slider to slide along the transverse guide rail.

9. The steel plate full-width heterogeneous inkjet printing device according to claim 3, characterized in that, The movable nozzle and the plurality of fixed nozzles are arranged adjacent to each other in the same plane, and the movable nozzle can be moved to a corresponding position alongside any of the fixed nozzles in the two rows of fixed nozzle groups.

10. The steel plate full-width heterogeneous inkjet printing device according to claim 3, characterized in that, The bottom of the outer casing has an opening with a horizontal plane. The movable end of the vertical adjustment component can move vertically, and the movable end of the horizontal adjustment component can move horizontally.

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