Printing equipment integrating laser 3D printing and ink-jet 3D printing

Abstract

The utility model discloses printing equipment integrating laser 3D printing and ink-jet 3D printing, which belongs to the technical field of 3D printers and comprises a laser printing head, an ink-jet printing head and a wind field. The wind field comprises an air inlet pipe and an air outlet pipe, and the air inlet pipe and the air outlet pipe are arranged on the two opposite sides of the laser printing head correspondingly, so that the laser printing head is arranged in the wind field; and the ink-jet printing head is arranged outside the wind field. The track of liquid drops sprayed by the ink-jet printing head of the printing equipment is not affected by a wind field, deformation of patterns printed by the ink-jet printing head is avoided, the wind field does not need to be opened and closed in the printing process of the laser printing head, the wind field is kept stable, and the situation that the printing efficiency is reduced due to frequent opening and closing of the wind field is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printers, and specifically relates to a printing device that integrates laser 3D printing and inkjet 3D printing. Background Art

[0002] Laser 3D printing uses a single laser beam, which is reflected by a galvanometer module, to scan and print the pattern layer by layer on the print surface. Currently, there are several types of 3D printing, including SLA, SLS, and SLM, depending on the printing material. In 3D printing, SLA, SLS, and SLM use a galvanometer module to reflect a single laser beam, scanning and printing the image on a two-dimensional work surface. Compared to traditional subtractive manufacturing techniques, 3D printing is an advanced additive manufacturing technology for rapidly producing parts.

[0003] In addition to laser 3D printing, another 3D printing method uses a nozzle to spray a binder to bond powders. This method is used for bonding sand molds, ceramics, and metal powders. Compared to laser sintering, adhesive bonding printing offers higher printing efficiency and is more suitable for mass production because the adhesive bonding printhead typically has over 4,000 nozzles.

[0004] As additive manufacturing applications expand, 3D printing is also moving toward more print heads and larger build sizes. Another important development in practical applications is the hybrid printing of multiple materials. Different materials have varying mechanical properties, thermal conductivity, and other characteristics. In complex composite devices, it is common to use different materials in different parts, and this type of application needs to be explored in 3D printing.

[0005] Multi-material 3D printing integrates the current mainstream laser 3D printing and inkjet 3D printing, combining the printing solutions of two materials into one and printing simultaneously.

[0006] Laser sintering printing, particularly for 3D printing of metal powder materials, requires a wind field to remove the smoke and flying particles generated by the sintering of the metal powder. This wind field can interfere with the trajectory of the small droplets ejected from the nozzle, causing distortion in the dimensions of the printed part pattern. Although the wind field can be turned on during the sintering process and off during printing, establishing a stable wind field takes a long time, and frequently turning the wind field on and off during printing significantly reduces printing efficiency. Utility Model Content

[0007] The purpose of this utility model is to provide a printing device that integrates laser 3D printing and inkjet 3D printing, so as to solve the problems of the wind field of the existing printing device that integrates laser 3D printing and inkjet 3D printing causing the size deformation of the pattern of the printed parts by the nozzle, and the frequent switching of the wind field causing the printing efficiency to decrease.

[0008] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0009] The utility model relates to a printing device that integrates laser 3D printing and inkjet 3D printing, which includes a laser print head, an inkjet print head and a wind field; the wind field includes an air inlet pipe and an air outlet pipe, and the air inlet pipe and the air outlet pipe are respectively arranged on two opposite sides of the laser print head, so that the laser print head is arranged in the wind field; the inkjet print head is arranged outside the wind field.

[0010] Preferably, the laser printing head comprises a focusing lens and a galvanometer unit which are sequentially arranged along the direction of the laser light path.

[0011] Preferably, the galvanometer unit includes an X-axis galvanometer for scanning the laser along the X-axis direction and a Y-axis galvanometer for scanning the laser along the Y-axis direction.

[0012] Preferably, the inkjet print head includes a glue nozzle and a glue curing unit.

[0013] Preferably, the inkjet print head is fixed on the outside of the air outlet pipe.

[0014] Preferably, a plurality of laser printing heads are provided, and the plurality of laser printing heads are arranged in a straight line, and the arrangement direction of the laser printing heads is perpendicular to the blowing direction of the wind field.

[0015] Preferably, the glue nozzle includes a plurality of nozzle holes, and the plurality of nozzle holes are arranged in a straight line; the glue curing unit is a long strip of glue curing laser, and the length direction of the glue curing laser is the same as the arrangement direction of the nozzle holes.

[0016] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0017] The printing device integrated with laser 3D printing and inkjet 3D printing involved in the present invention sets the inkjet print head outside the wind field. The trajectory of the droplets ejected by the inkjet print head will not be affected by the wind field, thereby avoiding deformation of the pattern printed by the inkjet print head. During the printing process of the laser print head, there is no need to switch the wind field on and off, so that the wind field remains stable and the printing efficiency will not be reduced due to frequent switching of the wind field. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a printing device that integrates laser 3D printing and inkjet 3D printing;

[0019] Figure 2 A top view of a printing device that integrates laser 3D printing and inkjet 3D printing.

[0020] Description of the drawings: 1-laser print head, 11-focusing lens, 12-X-axis galvanometer, 13-Y-axis galvanometer, 2-inkjet print head, 21-glue nozzle, 22-glue curing unit, 23-nozzle, 31-air inlet pipe, 32-air outlet pipe. DETAILED DESCRIPTION

[0021] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with embodiments. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0022] Refer to the attached Figure 1 As shown, the utility model relates to a printing device integrating laser 3D printing and inkjet 3D printing, including a laser print head 1, an inkjet print head 2 and a wind field; the laser print head 1 includes a focusing lens 11 and a galvanometer unit arranged in sequence according to the direction of the laser light path, and the galvanometer unit includes an X-axis galvanometer 12 for scanning the laser along the X-axis direction and a Y-axis galvanometer 13 for scanning the laser along the Y-axis direction.

[0023] The wind field includes an air inlet duct 31 and an air outlet duct 32, which are respectively arranged on opposite sides of the laser print head 1, so that the laser print head 1 is arranged within the wind field, and the wind field can cover the entire laser print head 1. The inkjet print head 2 is arranged outside the wind field. Specifically, the inkjet print head 2 is fixed to the outside of the air outlet duct 32 and includes a glue nozzle 21 and a glue curing unit 22.

[0024] In order to improve the printing efficiency, multiple laser printing heads 1 can be provided, and the multiple laser printing heads 1 are arranged in a straight line, and the arrangement direction of the laser printing heads 1 is perpendicular to the blowing direction of the wind field, such as Figure 2 The glue nozzle 21 includes a plurality of nozzle holes 23, and the plurality of nozzle holes 23 are arranged in a straight line; the glue curing unit 22 is a long strip of glue curing laser, and the length direction of the glue curing laser is the same as the arrangement direction of the nozzle holes 23, as shown in FIG. Figure 2 shown.

[0025] When the above-mentioned printing device integrating laser 3D printing and inkjet 3D printing is used, during the inkjet printing process, the printing device is moved by the guide rail so that the printing device moves above the printing work surface. At the same time, the glue nozzle 21 sprays glue droplets, and the glue curing laser is used to solidify the glue droplets sprayed on the printing work surface. During the entire inkjet printing process, the wind field does not need to be closed. Since the inkjet print head 2 is set outside the wind field, the wind field will not affect the trajectory of the glue droplets. During the laser sintering printing process, a powder laying unit is used to lay metal powder on the printing work surface, and then the laser print head 1 sinters the metal powder. The dust generated during the sintering process is blown out by the wind field to avoid affecting the sintering process. Since the wind field is in a long-open state, the wind field is always in a stable state, and there is no need to wait for the wind field to stabilize, thereby improving printing efficiency.

[0026] The above describes the present invention in detail with reference to the embodiments. However, the above contents are only preferred embodiments of the present invention and should not be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A printing device integrating laser 3D printing and inkjet 3D printing, characterized by: It includes a laser print head, an inkjet print head and a wind field; the wind field includes an air inlet pipe and an air outlet pipe, which are respectively arranged on two opposite sides of the laser print head, so that the laser print head is arranged in the wind field; the inkjet print head is arranged outside the wind field.

2. The printing device integrating laser 3D printing and inkjet 3D printing according to claim 1, characterized in that: The laser printing head comprises a focusing lens and a galvanometer unit which are sequentially arranged according to the direction of the laser light path.

3. The printing device integrating laser 3D printing and inkjet 3D printing according to claim 2, characterized in that: The galvanometer unit includes an X-axis galvanometer for scanning the laser along the X-axis direction and a Y-axis galvanometer for scanning the laser along the Y-axis direction.

4. The printing device integrating laser 3D printing and inkjet 3D printing according to claim 1, characterized in that: The inkjet print head comprises a glue nozzle and a glue curing unit.

5. The printing device integrating laser 3D printing and inkjet 3D printing according to claim 1, characterized in that: The inkjet print head is fixed on the outside of the air outlet pipe.

6. The printing device integrating laser 3D printing and inkjet 3D printing according to claim 1, characterized in that: There are multiple laser printing heads, which are arranged in a straight line, and the arrangement direction of the laser printing heads is perpendicular to the blowing direction of the wind field.

7. The printing device integrating laser 3D printing and inkjet 3D printing according to claim 4, characterized in that: The glue nozzle includes a plurality of nozzle holes, which are arranged in a straight line; the glue curing unit is a long strip of glue curing laser, and the length direction of the glue curing laser is the same as the arrangement direction of the nozzle holes.

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