CMYK-W-based multi-color mixing nozzle

Abstract

The utility model provides a CMYK-W-based multi-color color mixing spray head which comprises a connecting plate, a feeding port is formed in the top side of the connecting plate, a heat dissipation plate is in threaded connection with the bottom side of the connecting plate, feeding pipes are arranged in the connecting plate, the feeding port and the heat dissipation plate, side plates are installed on the two sides of the connecting plate, and the two sides of the connecting plate are provided with the feeding pipes. A feeding pipe penetrates through the connecting plate, the feeding port and the heat dissipation plate to be connected with the connecting pipe, the bottom side of the connecting pipe is connected with throat pipes arranged in a circumferential array, a heating block is installed on the outer surface of the bottom side of the connecting pipe, the throat pipes extend into the heating block to be connected with a melting cavity, a spray head is installed at the bottom of the melting cavity, and a collecting piece is installed on the inner side of the heating block. When the nozzle is used for the first time, redundant pigment in a melting cavity can be driven to move to the bottom side of the nozzle through meshing connection of a gear and a tooth groove driven by a motor, at the moment, the top side, close to a collecting barrel, of a collecting pipe is just inserted into a feeding port, and the pigment is pumped into the collecting barrel through a small self-priming pump installed in the collecting barrel to be collected, so that waste is reduced; and the uniformity of the second-time pigment is improved.

Description

Technical Field

[0001] This utility model relates to the field of printer color mixing printhead technology, and more specifically, to a CMYK-W multicolor mixing printhead. Background Technology

[0002] 3D printing technology is a type of rapid prototyping technology that uses 3D material management software, computer-aided 3D design, and mathematical 3D model design as its main technical foundations to construct objects by printing materials layer by layer.

[0003] In the design of traditional 3D printer nozzles for color mixing, some pigment remains in the fusion cavity after multi-color printing. When printing again, the material in the fusion cavity will be used, resulting in waste and uneven color mixing at the beginning of the second print.

[0004] Therefore, we made improvements and proposed a CMYK-W multicolor mixing printhead. Utility Model Content

[0005] The purpose of this invention is to address the problem that after multi-color printing, some pigment remains in the melting cavity, and the material in the melting cavity will be used during the next printing, resulting in waste and uneven color mixing at the beginning of the second printing.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] The above problems are improved by using the CMYK-W multicolor mixing printhead.

[0008] The application is as follows:

[0009] The device includes a connecting plate, a feed inlet mounted on the top side of the connecting plate, a heat sink threadedly connected to the bottom side of the connecting plate, a feed pipe inside the connecting plate, the feed inlet, and the heat sink, side plates mounted on both sides of the connecting plate, the feed pipe passing through the connecting plate, the feed inlet, and the heat sink and connecting to the connecting pipe, a throat tube arranged in a circular array connected to the bottom side of the connecting pipe, a heating block mounted on the outer surface of the bottom side of the connecting pipe, a melting cavity connected to the inside of the heating block through the throat tubes, a nozzle mounted at the bottom of the melting cavity, and a collector mounted on the inner side of the heating block.

[0010] As a preferred embodiment of the CMYK-W multicolor mixing nozzle provided by this utility model, the throat tube is set with a stepped orifice diameter that gradually decreases.

[0011] In a preferred embodiment of the CMYK-W multicolor mixing nozzle provided by this utility model, the feed pipes are arranged in a circumferential array and connected to the connecting pipes respectively.

[0012] In a preferred embodiment of the CMYK-W multicolor mixing nozzle provided by this utility model, a heat insulation plate is installed on the side of the heating block and the heat sink, and a cooling fan is installed on one side of the heat insulation plate.

[0013] As a preferred embodiment of the CMYK-W multicolor mixing nozzle provided by this utility model, the collecting component includes a collecting cylinder, a switching valve is installed on the side surface of the collecting cylinder, a conveying pipe is connected inside the switching valve, the conveying pipe is connected to the melting chamber through a one-way valve, an inlet is opened on the top side of the collecting cylinder, and a self-priming pump is provided on the bottom side corresponding to the inlet inside.

[0014] As a preferred embodiment of the CMYK-W multicolor mixing nozzle provided by this utility model, a motor is installed between the collecting cylinder and the melting chamber, a gear is installed at the output end of the motor, the gear is connected to the inside of the heating block through a connecting shaft, a collecting tube is provided on the bottom side of the nozzle, a toothed groove is opened on the surface of the collecting tube, the gear is meshed with the toothed groove, and the collecting tube is slidably connected to the heating block.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] When the nozzle is used for the first time, any excess pigment in the melting chamber can be moved to the bottom of the nozzle by the gear meshing with the tooth groove driven by the motor. At this time, the collection pipe is inserted into the feed inlet near the top of the collection cylinder. The small self-priming pump installed inside the collection cylinder draws the pigment into the collection cylinder for collection, reducing waste and increasing the uniformity of the pigment in the second application. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the CMYK-W multicolor mixing printhead provided in this application;

[0018] Figure 2 A schematic diagram of the heat sink based on the CMYK-W multicolor mixing nozzle provided in this application;

[0019] Figure 3 A schematic diagram of the fusion cavity structure provided in this application based on the CMYK-W multicolor mixing nozzle;

[0020] Figure 4 for Figure 3 A magnified view of A in the middle.

[0021] The image shows:

[0022] 1. Connecting plate; 2. Feed inlet; 3. Side plate; 4. Heat dissipation plate; 5. Collection cylinder; 6. Connecting pipe; 7. Heat insulation plate; 8. Cooling fan; 9. Heating block; 10. Throat; 11. Melting chamber; 12. Nozzle; 13. Collection pipe; 14. Gear; 15. Motor; 16. Gear; 17. Conveying pipe. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0024] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0029] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] Example 1

[0032] Please refer to Figure 1-4 A CMYK-W multicolor mixing nozzle includes a connecting plate 1, an inlet 2 mounted on the top side of the connecting plate 1, and a heat sink 4 threadedly connected to the bottom side of the connecting plate 1. An inlet pipe is located inside the connecting plate 1, the inlet 2, and the heat sink 4. Side plates 3 are mounted on both sides of the connecting plate 1. The inlet pipe passes through the connecting plate 1, the inlet 2, and the heat sink 4 and connects to a connecting pipe 6. A circumferentially arrayed throat 10 is connected to the bottom side of the connecting pipe 6. A heating block 9 is mounted on the outer surface of the bottom side of the connecting pipe 6. The throat 10 extends into the interior of the heating block 9 and connects to a melting cavity 11. A nozzle 12 is mounted at the bottom of the melting cavity 11. A collector is mounted inside the heating block 9. The throat 10 has a stepped, gradually decreasing aperture. The inlet pipes are arranged in a circumferential array and connected to the connecting pipe 6. The collecting component includes a collecting cylinder 5, with a switch valve installed on its side surface. A conveying pipe 17 is connected inside the switch valve, and the conveying pipe 17 is connected to the melting chamber 11 via a one-way valve. A feed inlet is located on the top side of the collecting cylinder 5, and a self-priming pump is installed on the bottom side corresponding to the feed inlet. A motor 15 is installed between the collecting cylinder 5 and the melting chamber 11. A gear 16 is installed at the output end of the motor 15, and the gear 16 is connected to the interior of the heating block 9 via a connecting shaft. A collecting pipe 13 is located on the bottom side of the nozzle 12, and a toothed groove 14 is formed on the surface of the collecting pipe 13. The gear 16 meshes with the toothed groove 14, and the collecting pipe 13 is slidably connected to the heating block 9.

[0033] The structure of the connecting plate 1, feed inlet 2, heat dissipation plate 4, internal connecting pipe, melting chamber 11, nozzle 12, connecting pipe 6, and heating block 9 adopts existing technology and has not been improved. Therefore, a detailed explanation is not provided here. The improvement lies in how the residual material inside the melting chamber 11 is stored for future use. After the first use of the nozzle, if the pigment used for the second application is different from the first, any excess pigment in the melting chamber 11 can be moved to the bottom of the nozzle 12 by the motor 15 driving the gear 16 to mesh with the toothed groove 14 on the collection pipe 13. At this time, the collection pipe 13 is located at the bottom of the nozzle 12. The nozzle is equipped with a vertically upward collecting nozzle. The collecting pipe 13, located near the top of the collecting cylinder 5, is inserted into the feed inlet. A small self-priming pump installed inside the collecting cylinder 5 draws the collected material into the cylinder for collection. When the collected ink is needed, it is input through the electromagnetic switch valve on the collecting cylinder 5, the delivery pipe 17, and the one-way valve on the melting chamber 11. Multiple collecting components can be installed within the heating block 9, with three layers of throats 10 and gradually decreasing apertures. This design aims to effectively solve the problem of material leakage that may occur during color mixing printing and effectively prevent the backflow of consumables in the molten state from causing head blockage, thereby reducing the risk of head blockage. This improvement not only ensures the stability of the printing process but also greatly improves the controllability of print quality. This allows the printhead to accurately achieve the printing requirements of solid color areas, gradient tones, and complex color mixing effects during color mixing printing. The threaded connection between the printhead 12 and the melting chamber 11 allows for replacement.

[0034] Example 2

[0035] Heat insulation plates 7 are installed on the sides of the heating block 9 and the heat dissipation plate 4, and a cooling fan 8 is installed on one side of the heat insulation plate 7.

[0036] Each of the five colors corresponds to an independent feed port, and a remote filament feeding structure is used. Since this structure does not have limitations on printhead size and weight, an aluminum heat sink 4 is used for heat dissipation to reduce printhead deformation caused by heat during printing. Simultaneously, to ensure the filament melts sufficiently before entering the melting section, a 24V cooling fan 8 is added to the heat source end of the heating element. Furthermore, a high-temperature resistant silicone sheet can be added between the heating block 9 and the cooling fan 8 as insulation material, and secured using metal tape or other fixing methods to further enhance heat dissipation performance.

[0037] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. A CMYK-W multicolor mixing printhead, characterized in that, The system includes a connecting plate (1), with a feed inlet (2) installed on the top side of the connecting plate (1) and a heat sink (4) threadedly connected to the bottom side of the connecting plate (1). The connecting plate (1), the feed inlet (2), and the heat sink (4) are provided with feed pipes. Side plates (3) are installed on both sides of the connecting plate (1). The feed pipe passes through the connecting plate (1), the feed inlet (2), and the heat sink (4) and is connected to the connecting pipe (6). The bottom side of the connecting pipe (6) is connected to a throat (10) arranged in a circular array. A heating block (9) is installed on the outer surface of the bottom side of the connecting pipe (6). The throat (10) extends into the interior of the heating block (9) and is connected to a melting cavity (11). A nozzle (12) is installed at the bottom of the melting cavity (11). A collector is installed on the inner side of the heating block (9).

2. The CMYK-W multi-color mixing head according to claim 1, wherein, The throat tube (10) is set with a stepped aperture that gradually decreases.

3. The CMYK-W multi-color mixing head according to claim 2, wherein, The feed pipes are arranged in a circular array and are connected to the connecting pipes (6).

4. The CMYK-W multi-color mixing head according to claim 1, wherein, Heat insulation plates (7) are installed on the sides of the heating block (9) and the heat sink (4), and a heat sink fan (8) is installed on one side of the heat insulation plate (7).

5. The CMYK-W multi-color mixing head according to claim 1, wherein, The collecting component includes a collecting cylinder (5), a switching valve is installed on the side surface of the collecting cylinder (5), a conveying pipe (17) is connected inside the switching valve, the conveying pipe (17) is connected to the melting chamber (11) through a one-way valve, a feed inlet is opened on the top side of the collecting cylinder (5), and a self-priming pump is provided on the bottom side corresponding to the feed inlet inside.

6. The CMYK-W multi-color mixing head according to claim 5, wherein, A motor (15) is installed between the collecting cylinder (5) and the melting cavity (11). A gear (16) is installed at the output end of the motor (15). The gear (16) is connected to the inside of the heating block (9) through a connecting shaft. A collecting pipe (13) is provided on the bottom side of the nozzle (12). A toothed groove (14) is opened on the surface of the collecting pipe (13). The gear (16) meshes with the toothed groove (14). The collecting pipe (13) is slidably connected to the heating block (9).

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