A 3D printer nozzle for polyaryletherketone consumables

Abstract

The utility model relates to 3D printer technical field, specifically disclose a kind of 3D printer nozzle for polyaryletherketone consumables, including head seat, heating block and nozzle, the heating block is installed in the lower end of head seat, the nozzle is installed in the lower end of heating block, the lower surface of heating block is provided with the heating block for protruding nozzle, and the vertical distance between the lower end of nozzle and the lower surface of heating block is set between 0.5~3mm;3D printer nozzle disclosed in the utility model can reheat and anneal the bottom material of PEEK or PEKK in the moving process, can make bottom material can be more firmly bonded with the material sprayed by nozzle, and avoided the sharp cooling of material, play good annealing effect, to eliminate the residual internal stress of material, effectively ensure the quality of printing forming part, its structure is simple, manufacturing cost and operating energy consumption are lower.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer technology, and specifically discloses a 3D printer nozzle for polyaryletherketone consumables. Background Technology

[0002] In the 3D printing process, some special consumables such as polyaryletherketone (PEEK) and PEKK have different physicochemical properties than traditional consumables. They are prone to low crystallinity regions or even amorphous regions, which makes it difficult for the upper and lower layers of printing material to bond firmly. Furthermore, the printed parts will have a large amount of residual internal stress, which can lead to warping, cracking, or dimensional deviations.

[0003] Patent application number 202210892565.X discloses a 3D printer for PEEK material, comprising: a support frame; an X-axis moving component mounted on the support frame; a printing platform fixedly mounted on the support frame and located below the X-axis moving component; a printing component fixedly mounted on the X-axis moving component and located above the printing platform; a heat preservation component fixedly mounted on the printing component and located above the printing platform; a Y-axis moving component mounted on the support frame, with the X-axis moving component movably mounted on the Y-axis moving component; and a Z-axis moving component mounted on the support frame, with the printing platform vertically and fixedly mounted on the Z-axis moving component. This patent invention heats and preserves the printed material during movement by installing a heat preservation component made of a ring-shaped heating lamp on the printing component, thereby improving the shaping of the PEEK material. However, while this solution effectively heats and preserves the printed PEEK, achieving a good heat treatment effect, it requires the heat preservation component to be powered, increasing both the manufacturing cost of the 3D printer and its energy consumption during operation. Therefore, in view of the above-mentioned shortcomings of existing 3D printers used for PEEK materials, this application proposes a 3D printer nozzle for polyaryletherketone consumables that is simple in structure, lower in cost, and can effectively guarantee the printing effect of consumables such as PEEK and PEKK. Utility Model Content

[0004] The purpose of this invention is to provide a 3D printer nozzle for polyaryletherketone (PLEK) consumables, in order to solve the problems that traditional 3D printer nozzles have when printing with PLEK consumables, such as poor adhesion between layers of printing material and large residual internal stress in the printed parts, which affect product quality. It also solves the problem that the use of additional insulation components in existing 3D printers using PEEK materials leads to increased manufacturing costs and excessive energy consumption.

[0005] This utility model is achieved through the following technical solution: A 3D printer nozzle for polyaryletherketone consumables includes a headstock, a heating block, and a nozzle. The heating block is installed at the lower end of the headstock, and the nozzle is installed at the lower end of the heating block. The lower surface of the heating block is provided with a heating element for extending the nozzle, and the vertical distance between the lower end of the nozzle and the lower surface of the heating block is set between 0.5 and 3 mm.

[0006] As a further feature of the above solution, the heating block and the heating element are connected together by welding or integral casting.

[0007] As a further feature of the above solution, the heating block is provided with a vertical through-hole, a heat-conducting cylinder is inserted into the assembly hole, the upper end of the heating block and the lower end of the heat-conducting cylinder are screwed together by threads, and the size of the assembly hole is smaller than the size of the heating block.

[0008] As a further provision of the above scheme, a feed guide tube is inserted into the heat-conducting cylinder, the upper end of the feed guide tube is concentrically abutted against a throat tube extending out of the heat-conducting cylinder, and the lower end of the feed guide tube is concentrically abutted against a nozzle extending out of the heating block.

[0009] As a further feature of the above scheme, the heating block, the heat-generating block, the heat-conducting cylinder, and the feed guide tube are all made of copper or aluminum, and the nozzle is made of tungsten steel.

[0010] As a further feature of the above solution, the heating block is provided with a mounting hole, and an electric heating rod is inserted into the mounting hole.

[0011] As a further feature of the above scheme, the heating block can be cylindrical, frustum-shaped, or annular in shape.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The 3D printer nozzle disclosed in this utility model has a downwardly extending heating block at the lower end of the heating block, and the lower surface of the heating block is kept between 0.5 and 3 mm from the printed bottom material. This allows the high temperature heat emitted from the heating block during the movement of the nozzle to reheat the PEEK or PEKK bottom material, making the bottom material bond more firmly with the material ejected from the nozzle. This effectively avoids the rapid cooling of the material, plays a better annealing role, and eliminates residual internal stress in the material, effectively ensuring the quality of the printed parts. The 3D printer nozzle disclosed in this patent not only effectively solves the problems existing in the printing process of polyaryletherketone consumables, but also has a simple structure and lower manufacturing cost and operating energy consumption compared with the prior art.

[0013] 2. This patent discloses two heating block design schemes for the 3D printer nozzle. The first scheme involves directly welding or integrally casting the heating block with the heating element, which simplifies the structural design and manufacturing of the entire nozzle. The second scheme uses an assembly-type connection method, which allows the heating block to be quickly and easily removed and replaced with conventional limiting parts to install the heat conduction cylinder and nozzle. This allows the entire 3D printer nozzle to be used with both special polyaryletherketone consumables and traditional ordinary consumables. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the entire embodiment 1 of the present utility model; Figure 2 This is a schematic diagram of the internal planar structure of Embodiment 1 of the present invention; Figure 3 This is a three-dimensional structural diagram of the heating block and the heat-generating block in Embodiment 2 of this utility model. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-3 This application will be described in detail with reference to the embodiments. Example 1

[0018] Example 1 discloses a 3D printer nozzle for polyaryletherketone consumables, see attached figure. Figures 1-3 The device includes a headstock 1, a heating block 2, and a nozzle 3. The heating block 2 is fixedly installed at the lower end of the headstock 1 via a connector 4. A vertical through-hole 201 is provided on the heating block 2, and an installation hole 202 for inserting a heating rod (not shown in the figure) is provided on the side of the heating block 2, so that the heating block 2 can achieve rapid heating after the heating rod is powered on and heats up.

[0019] A heat-conducting cylinder 5 is fitted and inserted into the assembly hole 201. The lower end of the heat-conducting cylinder 5 has an internal thread, and the top end of the heat-conducting cylinder 5 is provided with a stepped limiting hole. A feed guide tube 6 is fitted and inserted into the heat-conducting cylinder 5. A throat tube 7 extending out of the stepped limiting hole is provided in the heat-conducting cylinder 5 above the feed guide tube 6.

[0020] A heating block 8 is provided below the heating block 2, and the area of ​​the heating block 8 is larger than the area of ​​the mounting hole 201. Then, a threaded connection part 801 is provided at the upper end of the heating block 8, which mates with the internal thread at the lower end of the heat-conducting cylinder 5. A press-fit hole 802 is provided at the upper end of the threaded connection part 801, penetrating the bottom of the heating block 8, and the press-fit hole 802 is concentrically connected to the inner cavity channel of the heat-conducting cylinder 5, so that the lower end of the feed guide tube 6 can extend into the press-fit hole 802.

[0021] Finally, the nozzle 3 is placed in the press-fit hole 802, with the lower end of the nozzle 3 extending about 0.5 to 3 mm beyond the bottom of the press-fit hole 802, while the upper end of the nozzle 3 is pressed by the feed guide tube 6, thus fixing it in the heating block 8.

[0022] Furthermore, it should be noted that the heating block 2, heat-conducting cylinder 5, feed guide tube 6 and heating block 8 in this embodiment 1 are all made of metal materials with high thermal conductivity, such as copper or aluminum, while the nozzle 3 is made of tungsten steel, which gives it better wear resistance and can prevent it from being easily worn when used to print polyaryletherketone consumables.

[0023] In the assembly process of the 3D printer nozzle disclosed in Embodiment 1, the throat tube 7 first extends out of the stepped limiting hole along the heat-conducting cylinder 5, and then the feed guide tube 6 is installed into the heat-conducting cylinder 5. Next, the entire heat-conducting cylinder 5 is inserted into the assembly hole 201, and then the nozzle 3 is installed into the pressing hole 802. Through the screwing action between the threaded connection part 801 and the internal thread at the lower end of the heat-conducting cylinder 5, the heating block 8 is connected to the lower end of the heat-conducting cylinder 5. By rotating the heating block 8, the throat tube 7, the feed guide tube 6, and the nozzle 3 can be pressed and fixed together. After the three are pressed and fixed together, the distance between the lower end of the nozzle 3 and the bottom wall of the heating block 8 is maintained between 0.5 and 3 mm. When the distance between the two is too large and exceeds 3 mm, the heating block 8 will not be able to perform heat treatment on the printed bottom material, and will not achieve a good annealing and stress relief effect.

[0024] During operation, the installed 3D printer nozzle, made of highly thermally conductive metal materials (heating block 2, heat-conducting cylinder 5, feed guide tube 6, and heating block 8), transfers heat to the heating block 8. Simultaneously, with a vertical distance of only 0.5-3mm between the lower end of the nozzle 3 and the bottom wall of the heating block 8, the high temperature emitted by the heating block 8 during nozzle movement reheats the already printed PEEK or PEKK base material, ensuring a stronger bond between the base material and the printed material. Furthermore, after the nozzle 3 moves away, the heat dissipated by the heating block 8 prevents rapid cooling of the material, providing a better annealing effect and eliminating residual internal stress, thus ensuring the mechanical properties of the final printed part. Example 2

[0025] Example 2 discloses another simpler 3D printer nozzle for polyaryletherketone consumables, which is the same as that in Example 1 and will not be described again.

[0026] Reference Appendix Figure 3 This embodiment 2 focuses on the design of the connection method between heating block 2 and heating block 8. It changes the detachable connection in embodiment 1, and directly welds heating block 2 and heating block 8 together or directly uses casting molding to prepare them as a whole. Then, after fixing the heat conducting cylinder 5, the feed guide tube 6 and the nozzle 3 together, they are directly fixed in the assembly hole 201 opened on the heating block 2 and heating block 8, and the distance between the lower end of the nozzle 3 and the bottom wall of the heating block 8 is set between 0.5 and 3 mm.

[0027] Finally, it should be noted that the heating block 8 in both Embodiment 2 and Embodiment 1 adopts a cylindrical, frustum-shaped, or annular structural design, which ensures that the material in a certain area can be heated evenly through the shape design of the heating block 8 during the movement of the 3D printer nozzle.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A 3D printer nozzle for polyaryletherketone consumables, comprising a printhead base, a heating block, and a nozzle, wherein the heating block is mounted at the lower end of the printhead base, and the nozzle is mounted at the lower end of the heating block, characterized in that, The lower surface of the heating block is provided with a heating element for extending the nozzle, and the vertical distance between the lower end of the nozzle and the lower surface of the heating element is set between 0.5 and 3 mm.

2. A 3D printer nozzle for polyaryletherketone consumables according to claim 1, characterized in that, The heating block and the heating element are connected together by welding or integral casting.

3. A 3D printer nozzle for polyaryletherketone consumables according to claim 1, characterized in that, The heating block has a vertical through-hole for mounting, and a heat-conducting cylinder is inserted into the mounting hole. The upper end of the heating block and the lower end of the heat-conducting cylinder are screwed together by threads, and the size of the mounting hole is smaller than the size of the heating block.

4. A 3D printer nozzle for polyaryletherketone consumables according to claim 3, characterized in that, The heat-conducting cylinder is equipped with a feed guide tube. The upper end of the feed guide tube is concentrically connected to a throat tube that extends out of the heat-conducting cylinder, and the lower end of the feed guide tube is concentrically connected to a nozzle that extends out of the heating block.

5. A 3D printer nozzle for polyaryletherketone consumables according to claim 4, characterized in that, The heating block, heat-generating block, heat-conducting cylinder, and feed guide tube are all made of copper or aluminum, and the nozzle is made of tungsten steel.

6. A 3D printer nozzle for polyaryletherketone consumables according to claim 1, characterized in that, The heating block has a mounting hole, and an electric heating rod is inserted into the mounting hole.

7. A 3D printer nozzle for polyaryletherketone consumables according to any one of claims 1-6, characterized in that, The heating element can be cylindrical, frustum-shaped, or annular in shape.

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