Printing head and 3D printer provided with same

Abstract

The utility model relates to the technical field of 3D printing, in particular to a printing head for a 3D printer and the 3D printer provided with the printing head. In order to solve the problem that an existing intelligent photocuring 3D printer is poor in printing effect, the printing head comprises a shell, a release film, a light-transmitting pressing cone and a pressing piece, and a positioning clamping table is arranged on the inner edge of the bottom of the shell; the release film is arranged in the shell, and the edge of the release film is pressed on the positioning clamping table; the light-transmitting pressure cone is mounted in the shell and is positioned above the release film, and the light-transmitting pressure cone is pressed on the positioning clamping table; the pressing piece is installed in the shell and presses the light-transmitting pressing cone. According to the utility model, the printing head, the release film and the light-transmitting pressure cone are embedded in the shell, and exposure light rays for printing cannot diffuse into a printing material from the side surface of the light-transmitting pressure cone in the printing process, so that the part, which is not expected to be cured, in the printing material cannot be cured, and the printing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a print head for a 3D printer. Background Technology

[0002] like Figure 1 As shown, the existing intelligent photopolymer bio-3D printer uses a printhead comprising a printhead housing 01, a glass window 02, and a release film 03. The release film 03 is adhered to the glass window 02, which is located at the light exit end of the printhead housing 01 and sandwiched between the release film 03 and the light exit end of the printhead housing 01. During the printing process, because the glass window 02 and the release film 03 are located outside the printhead housing 01, the printing exposure light emitted from inside the printhead housing 01 must first pass through the glass window 02 before irradiating the printing material to cure it. Therefore, during the printing process, some of the printing exposure light diffuses from the side of the glass window 02 into the printing material, causing unwanted portions of the printing material to solidify, thus affecting the printing effect. Utility Model Content

[0003] To address the poor printing quality of existing intelligent photopolymer 3D printers, this invention proposes a print head comprising a shell, a release liner, a light-transmitting pressure cone, and a clamping element. The shell has a positioning platform on its bottom inner edge. The release liner is disposed within the shell, with its edge pressed against the positioning platform. The light-transmitting pressure cone is installed within the shell and positioned above the release liner, pressing against the positioning platform. The clamping element is installed within the shell and presses down on the light-transmitting pressure cone. In this invention, the release liner and light-transmitting pressure cone are embedded within the shell. During printing, the exposure light from the light-transmitting pressure cone does not diffuse into the printing material from the side, preventing unwanted curing of certain parts of the material and improving printing quality. Furthermore, the release liner is firmly fixed within the shell by the light-transmitting pressure cone and the clamping element. When the release liner is damaged, the user can directly disassemble the print head to replace it, simplifying the process and reducing the operating cost.

[0004] Preferably, the support surface of the positioning platen is configured as a conical slope. This conical slope on the support surface of the positioning platen on the printhead housing increases the contact area between the release liner and the support surface, improving the assembly stability of the release liner. Furthermore, the light-transmitting cone can be used to tighten the release liner during assembly, improving the assembly effect. Further, the light-transmitting pressure cone includes a pressure column and a truncated cone. The bottom ends of the truncated cone and the pressure column are collinearly connected, and the conical surface of the truncated cone mates with the support surface of the positioning platen. Thus, when assembling the printhead, the truncated cone of the light-transmitting pressure cone can be used to clamp the release liner with the support surface of the positioning platen, further improving the assembly stability and effect of the release liner.

[0005] Preferably, the clamping component includes a clamping sleeve and a clamping nut. The clamping sleeve is inserted into the outer casing and presses against the light-transmitting pressure cone. The clamping nut is threadedly connected to the outer casing via an external thread and presses against the clamping sleeve. Thus, assembling and disassembling the printhead of this invention only requires tightening the clamping nut, making the operation simple and convenient. Furthermore, the outer diameters of the clamping sleeve and the light-transmitting pressure cone are equal to the inner diameter of the outer casing. This prevents the clamping sleeve and the light-transmitting pressure cone from shifting or becoming misaligned after being assembled into the outer casing, thus avoiding any impact on the use of the printhead of this invention.

[0006] Preferably, the light-transmitting pressure cone is made of quartz glass or acrylic material. This method of using quartz glass or acrylic material to make the light-transmitting pressure cone results in good light transmission, convenient material selection, simple processing, and low manufacturing cost.

[0007] Preferably, the release film is made of FEP, NFEP, ACF, or PDMS material. This makes selecting a release film made of FEP, NFEP, ACF, or PDMS material simple and convenient.

[0008] Furthermore, this utility model also proposes a 3D printer equipped with any of the aforementioned print heads. Thus, when the 3D printer equipped with the aforementioned print heads prints, the exposure light used for printing will not diffuse from the side of the light-transmitting cone into the printing material, thereby preventing unwanted parts of the printing material from being cured and improving printing quality. In case of damage or malfunction of the release liner or print head, the release liner or print head can be replaced promptly, reducing the operating cost of the intelligent photopolymer 3D printer and consequently lowering printing costs. Attached Figure Description

[0009] Figure 1 A schematic diagram of the print head structure of an existing intelligent photopolymer 3D printer;

[0010] Figure 2 This is a schematic front view of the structure of the print head of this utility model;

[0011] Figure 3 for Figure 2 A schematic diagram of the AA cross-sectional structure. Detailed Implementation

[0012] Below, in conjunction with Figure 2 and 3 This paper provides a detailed description of the print head of this utility model and the 3D printer equipped with the print head.

[0013] like Figure 2 and 3As shown, the printhead of this utility model includes a housing 1, a release film 2, a light-transmitting pressure cone 3, and a clamping component. A positioning platen 11 is provided on the inner bottom edge of the housing 1. The release film 2 is disposed within the housing 1, and its edge is pressed against the positioning platen 11. The light-transmitting pressure cone 3 is installed inside the housing 1 and located above the release film 2, pressing against the positioning platen 11. The clamping component 4 is installed inside the housing 1 and presses against the light-transmitting pressure cone 3. In this utility model printhead, the release film 2 and the light-transmitting pressure cone 3 are embedded within the housing. During printing, the exposure light used for printing will not diffuse into the printing material, thus preventing unwanted materials from curing and improving printing quality. Furthermore, the release film 2 in this utility model printhead is pressed and fixed within the housing 1 by the light-transmitting pressure cone 3 and the clamping component. When the release film 2 is damaged, the user can directly disassemble the printhead to replace it, making replacement simple and convenient and reducing the operating cost of the printhead. Preferably, in the outer shell 1, the supporting surface (not shown in the figure) of the positioning platen 11 is set as a conical slope. Thus, setting the supporting surface of the positioning platen 11 on the outer shell 1 of the printhead of this invention as a conical slope increases the contact area between the release film 2 and the supporting surface, improving the assembly stability of the release film 2. Furthermore, the release film 2 can be tightened using the light-transmitting cone 3 during assembly, improving the assembly effect of the release film 2. Preferably, the release film 2 is made of FEP, NFEP, ACF, or PDMS material. This makes selecting the release film 2 using FEP, NFEP, ACF, or PDMS material simple and convenient. Preferably, the light-transmitting pressure cone 3 includes a pressure column 31 and a cone 32, with the bottom ends of the cone 32 and the pressure column 31 connected collinearly, and the conical surface of the cone 32 mates with the supporting surface of the positioning platen 11. Thus, when assembling the printhead of this utility model, the assembly stability and assembly effect of the release film 2 can be further improved by utilizing the mating of the frustum 32 of the light-transmitting pressure cone 3 and the supporting surface of the positioning platen 11 to clamp the release film 2. Preferably, the light-transmitting pressure cone 3 is made of quartz glass or acrylic material. Using quartz glass or acrylic material to make the light-transmitting pressure cone 3 provides good light transmission, convenient material selection, simple processing, and low manufacturing cost. Preferably, the clamping component includes a clamping sleeve 41 and a clamping nut 42. The clamping sleeve 41 is inserted into the outer shell 1 and pressed onto the light-transmitting pressure cone 3, and the clamping nut 42 is threadedly connected to the outer shell 1 via external threads and pressed onto the clamping sleeve 41. Thus, when assembling and disassembling the printhead of this utility model, only the clamping nut 42 needs to be tightened, making the operation simple and convenient. Preferably, the outer diameter of the clamping sleeve 41 and the outer diameter of the light-transmitting pressure cone 3 are equal to the inner diameter of the outer shell 1. In this way, after the light-transmitting pressure cone 3 and the clamping sleeve 41 are assembled into the outer shell 1, the movement and misalignment of the clamping sleeve 41 and the light-transmitting pressure cone 3 can be avoided, which would affect the use of the print head of this utility model.

[0014] When using an intelligent photopolymer 3D printer equipped with the aforementioned printhead for 3D printing, since the light-transmitting pressure cone 3 and the release film 2 are embedded inside the outer shell 1, the exposure light used for printing will not diffuse from the side of the light-transmitting pressure cone 3 into the printing material, thus preventing unwanted parts of the printing material from being cured and improving the printing effect. In case of damage or failure of the release film 2 or the printhead, the release film 2 or the printhead can be replaced in time, reducing the operating cost of the intelligent photopolymer 3D printer and thus reducing printing costs.

Claims

1. A printhead, characterized by, The printhead includes a housing, a release film, a light-transmitting cone, and a clamping member. A positioning plate is provided on the bottom inner edge of the housing. The release film is disposed in the housing, and the edge of the release film is pressed against the positioning plate. The light-transmitting cone is installed in the housing and located above the release film, and the light-transmitting cone is pressed against the positioning plate. The clamping member is installed in the housing and presses the light-transmitting cone.

2. The printhead of claim 1, wherein, The support surface of the positioning card platform is set as a conical slope.

3. The printhead of claim 2, wherein, The light-transmitting pressure cone includes a pressure column and a cone frustum. The bottom end of the cone frustum is collinearly connected to the bottom end of the pressure column, and the cone surface of the cone frustum mates with the support surface of the positioning card table.

4. The printhead according to any one of claims 1-3, wherein, The clamping component includes a clamping sleeve and a clamping nut. The clamping sleeve is inserted into the housing and pressed onto the light-transmitting pressure cone. The clamping nut is threadedly connected to the housing via an external thread and pressed onto the clamping sleeve.

5. The printhead of claim 4, wherein, The outer diameter of the compression sleeve and the outer diameter of the light-transmitting pressure cone are equal to the inner diameter of the outer shell.

6. The printhead of claim 4, wherein, The light-transmitting pressure cone is made of quartz glass or acrylic material.

7. The printhead of any of claims 1-3, wherein, The release film is made of FEP, NFEP, ACF or PDMS material.

8. A 3D printer characterized by, The 3D printer is equipped with a print head as described in any one of claims 1-7.

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