Deslagging device for printing area of 3D printer

Abstract

The utility model discloses a 3D printer printing area deslagging device, which relates to the technical field of deslagging devices and comprises a mounting cylinder, a fan for blowing airflow into the mounting cylinder is fixedly connected to the inner top of the mounting cylinder, and at least one group of electric heating wires for heating the airflow are fixedly connected to the position, below the fan, in the mounting cylinder. The inner bottom of the mounting cylinder is sleeved with an annular scraper in a sliding mode in the axial direction, and a spring enabling the annular scraper to elastically abut against the slag removal face is connected between the annular scraper and the mounting cylinder in an abutting mode. The device has the beneficial effects that the electric heating wire, the draught fan and the annular scraper are arranged to be matched, so that the device can scrape residues in a printing area after heating, compared with direct scraping, the residues can be softened, the viscosity of the residues is reduced, scraping is more convenient, and the printing efficiency is improved. And the annular scraper is provided with a first opening for guiding hot air flow to the front of the slag scraping direction to preheat the slag, so that the heating efficiency can be improved, and the slag removal efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of slag removal device technology, and in particular to a slag removal device for the printing area of ​​a 3D printer. Background Technology

[0002] A 3D printer is a device that uses additive manufacturing technology to build three-dimensional solid objects by stacking materials layer by layer based on three-dimensional model data. In the actual printing process, not all extruded material can perfectly build the model. Some material may not be accurately stacked in the predetermined position due to factors such as nozzle movement speed and extrusion volume control, forming excess residue. If the residue remains in the printing area, such as adhering to the printing platform, it will affect the adhesion between the subsequently printed object and the platform, resulting in an uneven bottom of the model, causing problems such as warping and displacement, reducing printing accuracy, and causing the printed object size to not match the design size. Therefore, it is necessary to remove the residue from the printing area of ​​the 3D printer.

[0003] Currently, most methods for cleaning residue from the printing area of ​​3D printers involve directly scraping it off with a scraper. This scraping method is not effective for cleaning hard and strongly adhesive residues, such as ABS material residues. These residues are hard at room temperature and adhere tightly to the printing area. Direct scraping may only remove some surface residues, while deep or creviced residues are difficult to remove, resulting in incomplete cleaning and affecting subsequent printing quality. Furthermore, direct scraping often requires considerable force to remove stubborn residues, which can easily scratch the surface coating of the printing platform and damage its flatness. Therefore, a residue removal device for the printing area of ​​a 3D printer is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems of the above-mentioned slag removal device for the printing area of ​​a 3D printer, this utility model is proposed.

[0006] To solve the above technical problems, this utility model provides the following technical solution: a slag removal device for a 3D printer printing area, including an installation cylinder, a fan for blowing air into the installation cylinder is fixedly connected to the top inner part of the installation cylinder, at least one set of heating wires for heating the airflow is fixedly connected below the fan inside the installation cylinder, and an annular scraper is slidably sleeved on the bottom inner part of the installation cylinder along the axial direction, and a spring abuts between the annular scraper and the installation cylinder to make the annular scraper elastically press against the slag removal surface;

[0007] The bottom side of the annular scraper has a first opening that guides the hot airflow forward in the scraping direction to preheat the residue, and the mounting cylinder has a second opening corresponding to the first opening through which the hot airflow passes.

[0008] As a preferred embodiment of the slag removal device for the printing area of ​​a 3D printer described in this utility model, two sets of rollers are rotatably connected to both sides of the second opening on the mounting cylinder. The four sets of rollers are arranged in a rectangular pattern. When the four sets of rollers are in contact with the slag removal surface, there is a gap of less than 2mm between the bottom of the mounting cylinder and the slag removal surface.

[0009] As a preferred embodiment of the slag removal device for the printing area of ​​a 3D printer described in this utility model, the annular scraper is provided with an outwardly extending flange on its outer side, and a sliding groove is axially opened in the mounting cylinder for the flange to slide. The spring is sleeved on the outer side of the annular scraper and its two ends respectively abut against the flange of the annular scraper and the groove wall.

[0010] As a preferred embodiment of the slag removal device for the printing area of ​​a 3D printer described in this utility model, the annular scraper has a protrusion on the side facing away from the first opening in the vertical direction, and a groove is provided inside the mounting cylinder for the protrusion to slide. The annular scraper is axially slidably fitted inside the mounting cylinder through the cooperation of the protrusion and the groove.

[0011] In a preferred embodiment of the slag removal device for the printing area of ​​a 3D printer described in this utility model, a mesh plate is fixedly connected inside the mounting cylinder between the annular scraper and the heating wire, and a filter screen is fixedly connected to the top of the mounting cylinder.

[0012] As a preferred embodiment of the slag removal device for the printing area of ​​a 3D printer described in this utility model, a push rod is fixedly connected to the side of the mounting cylinder facing the second opening, and the push rod is inclined.

[0013] The beneficial effects of this utility model are:

[0014] 1. By setting up a heating wire, a fan, and a ring scraper, the device can heat the residue in the printing area and then scrape it off. Compared with direct scraping, this softens the residue and reduces its stickiness, making scraping easier.

[0015] 2. The annular scraper is equipped with a first opening that directs the hot airflow forward in the scraping direction to preheat the residue, which can improve heating efficiency and thus improve slag removal efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the 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. Among them:

[0017] Figure 1 This is a schematic diagram of the upper three-dimensional structure of a slag removal device for the printing area of ​​a 3D printer according to the present invention.

[0018] Figure 2 This is a schematic diagram of the lower structure of a slag removal device for the printing area of ​​a 3D printer according to the present invention.

[0019] Figure 3 This is a cross-sectional structural schematic diagram of a slag removal device for the printing area of ​​a 3D printer according to the present invention.

[0020] Figure 4 This is a schematic diagram of the annular scraper structure of a slag removal device for the printing area of ​​a 3D printer according to the present invention.

[0021] Attached diagram descriptions: 1. Mounting cylinder; 2. Annular scraper; 3. Heating wire; 4. Fan; 5. Roller; 6. Spring; 7. Push rod; 8. Filter screen; 9. Mesh plate. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0026] Reference Figures 1-4 As an embodiment of the present invention, a slag removal device for the printing area of ​​a 3D printer is provided, which includes a mounting cylinder 1. A fan 4 for blowing air into the mounting cylinder 1 is fixedly connected to the top inner part of the mounting cylinder 1. At least one set of heating wires 3 for heating the airflow is fixedly connected to the mounting cylinder 1 below the fan 4. An annular scraper 2 is slidably sleeved on the bottom inner part of the mounting cylinder 1 along the axial direction. A spring 6 abuts between the annular scraper 2 and the mounting cylinder 1 to make the annular scraper 2 elastically press against the slag removal surface.

[0027] The bottom side of the annular scraper 2 has a first opening that directs the hot airflow forward in the scraping direction to preheat the residue. The mounting cylinder 1 has a second opening corresponding to the first opening for the hot airflow to pass through. When the mounting cylinder 1 is placed in the printing area, the annular scraper 2 is pressed tightly against the slag removal surface by the elastic force of the spring 6. The fan 4 blows airflow into the mounting cylinder 1. The airflow is heated when it passes through the heating wire 3. The hot airflow heats the residue, softens it, and reduces its viscosity. The mounting cylinder 1 is slowly pushed, and the mounting cylinder 1 drives the annular scraper 2 to scrape along the slag removal surface. The annular scraper 2 scrapes away the softened residue. The first opening on the annular scraper 2 directs the hot airflow forward in the scraping direction to preheat the residue in front. When the preheated residue enters the mounting cylinder 1, it can be heated to the softening temperature more quickly, thereby improving the slag removal efficiency.

[0028] like Figure 1 As shown, two sets of rollers 5 are rotatably connected to both sides of the second opening on the mounting cylinder 1. The four sets of rollers 5 are arranged in a rectangular pattern. When the four sets of rollers 5 are in contact with the slag removal surface, there is a gap of less than 2mm between the bottom of the mounting cylinder 1 and the slag removal surface. The four sets of rollers 5 change the contact mode between the mounting cylinder and the slag removal surface from surface contact to point contact, which can reduce friction and prevent scratching of the slag removal surface. At the same time, the four sets of rollers 5 also play a guiding role, enabling the device to scrape slag along a straight line.

[0029] like Figure 3 As shown, the annular scraper 2 has an outwardly extending flange on its outer side, and the mounting cylinder 1 has an axially opened groove for the flange to slide. The spring 6 is sleeved on the outer side of the annular scraper 2 and its two ends are respectively pressed against the flange of the annular scraper 2 and the groove wall of the groove.

[0030] like Figure 2 and Figure 4As shown, the annular scraper 2 has a protrusion in the vertical direction on the side opposite to the first opening, and a groove is provided in the mounting cylinder 1 for the protrusion to slide. The annular scraper 2 is slidably fitted into the mounting cylinder 1 along the axial direction through the cooperation of the protrusion and the groove.

[0031] like Figures 1-3 As shown, a mesh plate 9 is fixedly connected inside the mounting cylinder 1 between the annular scraper 2 and the heating wire 3. The mesh plate 9 is used to prevent scraped residue from splashing onto the heating wire 3. A filter screen 8 is fixedly connected to the top of the mounting cylinder 1. The filter screen 8 is used to prevent foreign objects from entering the cylinder 1.

[0032] like Figures 1-3 As shown, a push rod 7 is fixedly connected to the side of the mounting cylinder 1 facing away from the second opening. The push rod 7 is inclined to facilitate the movement of the device.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A slag removal device for the printing area of ​​a 3D printer, characterized in that: The device includes an installation cylinder (1), a blower (4) for blowing air into the installation cylinder (1) is fixedly connected to the top of the installation cylinder (1), at least one set of heating wires (3) for heating the air flow is fixedly connected below the blower (4) inside the installation cylinder (1), and an annular scraper (2) is slidably sleeved on the bottom of the installation cylinder (1) along the axial direction. A spring (6) abuts between the annular scraper (2) and the installation cylinder (1) to make the annular scraper (2) elastically press against the slag removal surface. The bottom side of the annular scraper (2) has a first opening that guides the hot airflow forward in the scraping direction to preheat the residue, and the mounting cylinder (1) has a second opening corresponding to the first opening through which the hot airflow passes.

2. The slag removal device for the printing area of ​​a 3D printer according to claim 1, characterized in that: The mounting cylinder (1) is rotatably connected to two sets of rollers (5) on both sides of the second opening. The four sets of rollers (5) are arranged in a rectangular shape. When the four sets of rollers (5) are in contact with the slag removal surface, there is a gap of less than 2 mm between the bottom of the mounting cylinder (1) and the slag removal surface.

3. The slag removal device for the printing area of ​​a 3D printer according to claim 2, characterized in that: The annular scraper (2) has an outwardly extending flange on its outer side. The mounting cylinder (1) has an axially opening groove for the flange to slide in. The spring (6) is sleeved on the outer side of the annular scraper (2) and its two ends abut against the flange of the annular scraper (2) and the groove wall of the groove, respectively.

4. A slag removal device for the printing area of ​​a 3D printer according to claim 3, characterized in that: The annular scraper (2) has a protrusion on the side opposite to the first opening in the vertical direction. The mounting cylinder (1) has a groove for the protrusion to slide in. The annular scraper (2) is slidably fitted into the mounting cylinder (1) along the axial direction through the cooperation of the protrusion and the groove.

5. A slag removal device for the printing area of ​​a 3D printer according to claim 4, characterized in that: A mesh plate (9) is fixedly connected inside the mounting cylinder (1) between the annular scraper (2) and the heating wire (3), and a filter screen (8) is fixedly connected to the top of the mounting cylinder (1).

6. A slag removal device for the printing area of ​​a 3D printer according to claim 5, characterized in that: A push rod (7) is fixedly connected to the side of the mounting cylinder (1) facing away from the second opening, and the push rod (7) is inclined.

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