A digital variable inkjet device

Abstract

The application belongs to the technical field of ceramic wall and floor tile production, and particularly relates to a digital multi-color mixing color glaze and mortar intelligent equipment. The digital multi-color mortar spraying device mainly comprises a fixed rack, a storage hopper for storing printing ceramic mortar, a plurality of unit hole plates at the bottom of the storage hopper for discharging mortar, a top impact pin device for controlling the opening and closing of the unit hole plate for discharging mortar, a lifting device for controlling the top impact pin, an integrated circuit control panel and the like. The feature is that the storage hopper has at least two mortar grooves, and the unit hole plate at the bottom of the storage hopper has a multi-hole structure, and at least a three-hole structure.

Description

Technical Field

[0001] This invention belongs to the field of ceramic wall and floor tile production technology, specifically relating to a digital intelligent equipment for spraying glaze and slurry with multiple colors. Background Technology

[0002] The glazing process in ceramics refers to applying glaze slurry to the surface of a formed ceramic body. There are seven main methods: dipping, pouring, casting, brushing, sprinkling, and wheel glazing. The appropriate method is chosen based on the shape and thickness of the ceramic body. Spray glazing involves using a spray gun to atomize the glaze and spray it onto the surface of the ceramic body. This method is suitable for all products, including large products, products with complex shapes, or thin bodies that require multiple glazing applications. Multiple sprays can be applied to achieve multiple glaze colors and a thicker glaze layer. Many tile factories use this method. There is also a mechanical glazing method that combines casting and spraying, achieving high efficiency and a smooth, even glaze surface.

[0003] Technical Issues: Currently, the equipment used for glazing ceramic wall and floor tiles includes bell-shaped glazing machines and high-pressure spray gun atomizers. However, current glazing techniques only produce a single, unpatterned glaze layer. While existing inkjet printers can print patterned glaze layers, they can only produce very thin layers. Furthermore, current inkjet printers have extremely strict requirements on material performance and fineness, and cannot achieve large-scale glaze layer application. There is a lack of a versatile production line capable of intelligently and rapidly printing various colors of glaze paste in 3D, especially for water-based glazes currently used in production, and particularly a digital, intelligent glaze spraying device capable of printing multiple blended colors. Summary of the Invention

[0004] Addressing the shortcomings of existing glazing and spraying technologies, the device of this invention can spray single-color glazes, instantly mix and spray multi-color glaze slurries, combine and spray three primary color glazes, and perform three-dimensional spraying of multiple patterned glazes, enabling the development of three-dimensional polished glaze products and the development of multi-colored three-dimensional polished bricks with slurry spraying, thereby replacing the existing bulky and complicated polished brick material application equipment system.

[0005] The present invention provides a digital variable color inkjet printing device for glazing CNC equipment, which is simple and convenient to use, has minimal requirements for consumables, especially for the fineness and viscosity of the ink, and has extremely low requirements for the manufacturing precision of the equipment. It is easy to maintain and use in production, and is extremely suitable for ceramic production workshops with harsh environments of high dust and high humidity. Moreover, the cost is not high, unlike piezoelectric ceramic inkjet printheads which have extremely high manufacturing requirements and extremely strict operating environments.

[0006] This invention discloses a digital variable color inkjet printing device, which mainly consists of multiple identical inkjet module package systems. Each inkjet module package system mainly includes a fixing frame, a storage hopper for holding the inkjet printing ceramic ink, a multi-unit perforated module plate for ink dispensing at the bottom of the storage hopper, a top impact pin for controlling the opening and closing of the holes in the ink dispensing unit perforated plate, and a device for controlling the lifting and lowering of the top impact pin. The device is characterized in that the storage hopper has at least two ink tanks, and the unit holes in the ink dispensing unit perforated plate at the bottom of the storage hopper are at least three-way structures.

[0007] This invention discloses a digital variable color inkjet printing device, which mainly consists of multiple fixed frames. A storage hopper for holding the inkjet printing ceramic ink is mounted on each fixed frame. Multiple unit perforated plate modules for ink dispensing are installed at the bottom of the storage hopper. A top-impact pin device for controlling the opening and closing of the perforations in the ink dispensing unit perforated plates is installed in the storage hopper. A piezoelectric ceramic assembly or electromagnet assembly for controlling the lifting and lowering of the top-impact pin is installed on the top or side of the top-impact pin. The circuit signals of the piezoelectric ceramic and electromagnet of each unit are controlled by an integrated circuit control panel. The digital variable color inkjet printing device of this invention is characterized in that the top-impact pin lifting and lowering device is composed of an electromagnet assembly, which mainly includes a coil and an iron core. The top-impact pin lifting and lowering device is compactly installed in modular groups on the top of the top-impact pin. The top-impact pin device mainly includes a top-impact pin, a top-impact pin guide tube, a return spring, and a top-impact pin limiter.

[0008] The present invention discloses a digital variable color inkjet printing device, characterized in that each ink tank 1 of the storage hopper 18 has a constant pressure ink outlet (i.e., constant pressure overflow ink outlet 1-3) and a constant pressure overflow ink outlet 2-16 on its upper side, an ink inlet 6 and an anti-settling circulation inner ink inlet (i.e., inner circulation ink inlet 7) on its lower side, and an adjustable high-pressure differential overflow ink outlet (i.e., constant pressure overflow ink outlet 1-3 and constant pressure overflow ink outlet 2-16) in its middle, and is movably mounted on a frame. Further, the storage hopper 18 has at least two ink tanks 1, with corresponding ink inlet chambers 5 and ink outlet chambers 12 on the side walls of the ink tanks, as well as corresponding constant pressure overflow chambers 1-2 and 17. The slurry feeding chamber, i.e., slurry inlet chamber 5, and the slurry discharge chamber, i.e., slurry outlet chamber 12, are located in the lower middle part of the side wall of the slurry tank 1. They share a common side wall with multiple slurry diversion inlets, i.e., internal circulation inlets 7, multiple anti-settling circulation internal slurry inlets 7, and multiple internal circulation outlets 13. The slurry constant pressure overflow chamber 12 and the slurry constant pressure overflow chamber 27 are located in the upper middle part of the side wall of the slurry tank. They share a common side wall with square overflow ports, i.e., constant pressure overflow outlet 13 and constant pressure overflow outlet 26. The slurry feeding chamber (slurry inlet chamber 5), slurry discharging chamber (slurry outlet chamber 12), slurry constant pressure overflow chamber 12, and slurry constant pressure overflow chamber 27 have slurry outlet 14, slurry outlet 28, slurry outlet 31, slurry outlet 414, and slurry outlet 515 on their bottom and sides. The storage hopper 18 has corresponding slots and rivets on its upper part to support the module of the impact pin guide tube 19 and the return spring, as well as the module of the impact pin lifting device (lifting module 10); its bottom has corresponding slots and rivets to support the orifice plate module 9 of the slurry discharging unit. The storage hopper 18 of the digital variable color inkjet printing device of the present invention is characterized in that the ink feeding chamber, i.e., the ink inlet chamber 5 and the ink discharge chamber, i.e., the ink outlet chamber 12, are located in the lower middle part of the side wall of the ink tank 1, in the lower middle part of the four side walls of the ink tank 1, preferably in the lower middle part of both sides of the ink tank 1. There are multiple ink diversion inlet ports, i.e., internal circulation inlet holes 7, on their common side wall. There are multiple anti-settling circulation internal inlet holes 7 on their common side wall. There are multiple internal circulation outlet ports, i.e., internal circulation outlet holes 13, on their common side wall. The ink constant pressure overflow chamber 1 2 and the ink constant pressure overflow chamber 2 17 are located in the upper middle part of the side wall of the ink tank 1. They can be located in the upper middle part of both sides of the ink tank 1 and in the upper middle part of the four side walls of the ink tank 1. There are square overflow ports, i.e., constant pressure overflow outlet 1 3 and constant pressure overflow outlet 2 16, on their common side wall. The storage hopper 18 of the digital variable color inkjet printing device of the present invention is characterized in that the ink feeding chamber, namely the ink feeding chamber 5, the ink discharging chamber, namely the ink discharging chamber 12, and the ink constant pressure overflow chamber 12 and the ink constant pressure overflow chamber 217 have ink outlets, namely ink outlet 14, ink outlet 28, ink outlet 311, ink outlet 414, and ink outlet 515, on the bottom and side.The present invention discloses a storage hopper 18 of a digital variable color inkjet printing device, characterized in that the storage hopper ink tank 1 has corresponding slots at the top to receive the module of the top impact pin guide tube 19 and the reset spring sleeve, as well as the module of the top impact pin lifting device, i.e., the lifting module 10; and corresponding slots at the bottom to receive the ink discharge unit orifice plate module 9. The upper end of the storage hopper 18 can be snapped, riveted, or glued to the top impact pin guide tube 19 module; the upper end of the storage hopper 18 can be snapped, riveted, or glued to the module of the reset spring sleeve and the module of the top impact pin lifting device, i.e., the lifting module 10; and the bottom end of the storage hopper 18 can be snapped, riveted, or glued to the ink discharge unit orifice plate module 9. The storage hopper 18 may have corresponding mesh top impact pin guide tubes inside, at the bottom, and at the top, which can reinforce the storage hopper 18 and the ink tank 1.

[0009] This invention discloses a digital variable color inkjet printing device, characterized in that the electromagnet assembly is a drive pin device, mainly comprising a pressure rod, a pin, a pin straightening spring, a pin guide tube, a return spring, a pin limiter, and a pressure rod hinge fulcrum or a pressure rod guide tube. The pin guide tube is installed inside the storage hopper, and the pressure rod is connected to the top of the pin. To protect the pressure rod from high-frequency vibration and keep its amplitude within a reasonable range, a positioning block is also installed. The positioning block is installed at the top of the pin and the bottom of the pressure rod, effectively pressing the pin head against the corresponding ink outlet through the guide tube. The other end of the pressure rod is connected to a cross-linking fastener fulcrum or sleeved with the pressure rod guide tube.

[0010] This invention discloses a digital variable color inkjet printing device, characterized in that the piezoelectric ceramic assembly is a driving device for a top impact pin, mainly comprising a pressure rod, a top impact pin, a top impact pin guide tube, a top impact pin limiter, and a hinged fulcrum for the pressure rod. The top impact pin guide tube is installed inside the storage hopper, and the pressure rod is connected to the top of the top impact pin. To protect the pressure rod from vibration at high frequencies and keep its amplitude within a reasonable range, a positioning block is also installed. The positioning block is installed at the top of the top impact pin and the bottom of the pressure rod, effectively pressing the top impact pin head against the corresponding ink outlet through the guide tube. The other end of the pressure rod is connected to the cross-linking fulcrum. The piezoelectric ceramic assembly is installed near the hinged fulcrum and adheres to the pressure rod. When the working amplitude of the piezoelectric ceramic rises and falls, the pressure rod forms an amplified lifting power lever.

[0011] The present invention provides a digital variable color paste printing device, characterized in that the electromagnet mainly includes a coil core and a shell, and is installed on the side of the impact pin, which can be placed either above or below.

[0012] This invention discloses a digital variable color paste inkjet printing device. The electromagnet-controlled lifting mechanism for the impact pin addresses the issue of high-viscosity glazes, where the inertia and elastic deformation hysteresis of coarse-particle, high-viscosity glazes are significant, thus eliminating the need for particularly high-frequency lifting. Electromagnetic attraction can also control the impact pin's vertical lifting and lowering with significant amplitude. Using a piezoelectric ceramic component to control the impact pin's extension further simplifies the structure and makes it easier to manufacture and install. High-frequency lifting and lowering of the impact pin is also possible.

[0013] This invention discloses a digital variable color inkjet printing device, characterized in that the ink dispensing unit orifice plate is composed of hundreds or thousands of regularly arranged unit holes with a depth of 0.1-5 mm, a hole diameter of 0.1-5 mm or even larger, and the holes are funnel-shaped. The unit holes of the ink dispensing unit orifice plate at the bottom of the storage hopper have a multi-channel structure, at least a three-channel structure. In the multi-channel structure, one channel is the ink ejection channel, and the remaining channels are unit channels of different ink tanks. The multi-channel structure can collect ink from two or more ink tanks from their respective unit channels and eject it from a single unit ejection channel. The ink dispensing unit orifice plate of this invention is characterized in that each unit hole has at least a three-channel structure, enabling the collection of ink from two or more ink tanks from their respective unit holes and ejection from a single unit ejection hole. According to the set lifting frequency ratio of each impact pin, different colored slurries are gathered and mixed from the unit holes of their respective slurry tanks, and then sprayed out from a single unit nozzle, thereby obtaining sprayed slurries with different blended colors. To better understand the concept and idea of ​​this invention, the technical route and accompanying drawings provide a more intuitive understanding. A simplified schematic diagram of the specific structure is shown in the attached drawings of the specification. Figure 1 Figure 2 Figure 3 Figure 4 As shown.

[0014] Beneficial effects: The digital variable color paste spraying device of the present invention can spray single-color glaze, multi-color glaze combination spraying, three-primary-color glaze combination spraying, and superimposed three-dimensional spraying of multiple pattern glazes. The color of the spraying paste is variable and adjustable, realizing the development of three-dimensional polished glaze products and the development of multi-color three-dimensional slurry spraying polished tiles, thereby replacing the existing bulky and complicated polished tile material application equipment system.

[0015] The present invention relates to a digital variable color inkjet printing device for glazing CNC equipment. The production, assembly and processing requirements are not high, it is simple and convenient to use, and the requirements for consumables are minimal. In particular, the requirements for the fineness and viscosity of the inkjet are also relatively low. The manufacturing precision requirements of the equipment are extremely low, and it is easy to maintain and use. It is extremely suitable for ceramic production workshops with harsh environments of high dust and high humidity. Moreover, the cost is not high, unlike piezoelectric ceramic inkjet printheads which have extremely high manufacturing requirements and extremely strict operating environments. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the combined structure of two slurry tank storage hoppers, a top impact pin system, an electromagnet assembly, and a three-way slurry outlet unit orifice plate.

[0017] Figure 2 This is a cross-sectional view of the combined structure of three slurry tank storage hoppers, impact pin system, electromagnet assembly, and three-way slurry outlet unit orifice plate.

[0018] Figure 3 This is a cross-sectional view of the combined structure of three slurry tank storage hoppers, a top impact pin system, an electromagnet assembly, and a four-way slurry outlet unit orifice plate.

[0019] Figure 4 It is a schematic cross-sectional view of the combined structure of the slurry hopper, the impact pin system, the electromagnet assembly, and the orifice plate of the slurry discharge unit.

[0020] In the diagram: 1. Slurry tank; 2. Overflow chamber one; 3. Constant pressure overflow slurry outlet one; 4. Slurry outlet one; 5. Slurry inlet chamber; 6. Slurry inlet; 7. Internal circulation slurry inlet hole; 8. Slurry outlet two; 9. Slurry outlet unit orifice plate module plate; 10. Lifting module; 11. Slurry outlet three; 12. Slurry outlet chamber; 13. Internal circulation slurry outlet hole; 14. Slurry outlet four; 15. Slurry outlet five; 16. Constant pressure overflow slurry outlet two; 17. Overflow chamber two; 18. Storage hopper; 19. Top impact pin guide tube; 20. Three-way channel slurry outlet unit orifice plate; 21. Four-way channel slurry outlet unit orifice plate; 22. Top impact pin. Detailed Implementation

[0021] See the example for reference. Figure 1 , Figure 2 , Figure 3 , Figure 4 .

[0022] The present invention discloses a digital variable color inkjet printing device, which mainly consists of multiple fixed frames. A storage hopper 18 for holding ceramic inkjet printing ink is mounted on each fixed frame. At the bottom of the storage hopper 18, a multi-unit perforated plate module, namely an inkjet dispensing unit perforated plate module 9, is installed. The perforations of the multi-channel inkjet dispensing unit perforated plates, as shown in the attached drawings (three-way perforated plate 20, four-way perforated plate 21), are controlled by impact pins 22, which are installed in the ink tank 1 of the storage hopper 18 via impact pin guide tubes 19. A lifting module 10 is installed at the upper end of the storage hopper 18. 10. An electromagnet assembly is used; the upper part of the storage hopper 18 has a constant pressure overflow outlet 3 and a constant pressure overflow outlet 16, the lower part has many slurry inlets aligned with the spray nozzles (i.e., internal circulation slurry inlets 7), the lower part has many anti-settling circulation internal slurry inlets (i.e., internal circulation slurry inlets 7), and the lower part has many internal circulation outlets (i.e., internal circulation slurry outlets 13); the storage hopper 18 has at least two slurry tanks 1, and the slurry tanks 1 have corresponding slurry inlet chambers (i.e., inlet chambers 5) and slurry outlet chambers (i.e., outlet chambers 12) on both sides, as well as corresponding constant pressure overflow chambers 2 and 17.

[0023] The present invention discloses a digital variable color inkjet printing device, wherein the ink feeding chamber (i.e., ink inlet chamber 5) and the ink discharge chamber (i.e., ink discharge chamber 12) are located in the lower middle part of both sides of the ink tank 1. They share a common side wall with multiple ink diversion inlets (i.e., internal circulation inlet holes 7), multiple anti-settling circulation internal inlet holes (i.e., internal circulation inlet holes 7), and multiple internal circulation outlets (i.e., internal circulation outlet holes 13). The ink constant pressure overflow chamber 12 and ink constant pressure overflow chamber 27 are located in the upper middle part of both sides of the ink tank 1. They share a common side wall with square overflow ports (i.e., constant pressure overflow outlet 13 and constant pressure overflow outlet 26). The ink feeding chamber, ink discharge chamber, and ink constant pressure overflow chamber all have outlets (i.e., outlet 14, outlet 28, outlet 31, outlet 414, and outlet 515) at their bottom and sides. The storage hopper 18 may have a corresponding mesh top impact pin guide tube at the bottom upper part. The mesh top impact pin guide tube can be used to reinforce the storage hopper 18 and the slurry tank 1.

[0024] The above description is only a partial embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the inventive concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

[0025] Industrial Applicability: This invention provides a digital variable color paste inkjet printing device for CNC glazing. It has low requirements for production assembly and processing, is simple and convenient to use, and has minimal requirements for glaze raw material consumables, especially the fineness and viscosity of the paste. Existing production processes can meet the requirements for raw material fineness and viscosity. The equipment has extremely low manufacturing precision requirements, is easy to maintain and use, and is extremely suitable for harsh environments such as high dust and high humidity in ceramic production workshops. Moreover, its cost is low, unlike piezoelectric ceramic inkjet printheads which have extremely high manufacturing requirements and extremely strict operating environments. This digital variable color paste inkjet printing device for CNC glazing can also be used for online coloring of ceramic body powder to produce through-body patterned ceramic products, reducing ceramic production costs, enabling rapid production of specialty ceramic products, and increasing the added value of ceramic products. It can also be used for online coloring of quartz stone and artificial stone body powder to produce through-body patterned artificial stone products, and for online coloring of acrylic sheets to produce through-body patterned products.

Claims

1. A digital variable color inkjet printing device, comprising a fixed frame, a hopper for holding ceramic ink, a multi-unit perforated plate for ink dispensing at the bottom of the hopper, a top-impact pin device for controlling the opening and closing of the perforations in the ink dispensing unit perforated plate, a top-impact pin lifting device, and an integrated circuit control panel, characterized in that: The storage hopper has at least two slurry tanks, and the unit holes of the slurry outlet unit orifice plate at the bottom of the storage hopper have a multi-channel structure.

2. A digital variable inkjet printing apparatus as claimed in claim 1, characterized in that The multi-channel structure includes one channel as a slurry ejection channel and the remaining channels as unit channels for different slurry tanks. The multi-channel structure can gather slurry from two or more slurry tanks from their respective unit channels and eject it from a single unit ejection channel.

3. A digital variable inkjet printing apparatus as claimed in claim 1, characterized in that The upper part of the slurry tank of the storage hopper has corresponding slots and rivets that can support the module of the top impact pin guide tube and the reset spring, as well as the module of the top impact pin lifting device. The bottom of the hopper has corresponding slots and rivets that can support the slurry discharge unit orifice plate.

4. A digital variable inkjet printing apparatus as claimed in claim 1, characterized in that The slurry tank has a corresponding slurry inlet chamber, a slurry outlet chamber, and a slurry constant pressure overflow chamber on its side wall. The slurry inlet chamber and the slurry outlet chamber are located in the lower middle part of the side wall of the slurry tank. They share a common side wall with multiple slurry diversion inlets, anti-settling circulation inlet holes, and internal circulation outlets. The slurry constant pressure overflow chamber is located in the upper middle part of the side wall of the slurry tank. It shares a common side wall with a square overflow port.

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