Waste discharging device for 3D printer

Abstract

The waste discharging device for the 3D printer comprises a shell, an opening, a material receiving plate and a discharging port are arranged in the shell, the material receiving plate is used for receiving waste, the material receiving plate is located between the opening and the discharging port, and the material receiving plate can slide to enable the opening to be communicated with the discharging port. A material scraping plate is fixed to the opening, the material receiving plate can slide in the direction where the material scraping plate is located, and the material scraping plate is located above the material receiving plate. And a material receiving plate in the waste discharging device is not only used for receiving the waste, but also used for opening and closing the opening. And after the material receiving plate moves, the waste is pushed out to the opening through the material scraping plate, so that the waste falls into the discharging opening. When the printing head moves, the nozzle passes through the nozzle wiping plate arranged at the top of the scraping plate, and waste extruded by the nozzle is scraped off through the nozzle wiping plate. The device can fully clean the nozzle, not only can discharge waste extruded by the nozzle, but also can clean residual waste on the nozzle.

Description

Technical Field

[0001] The utility model belongs to the field of 3D printers, and in particular relates to a waste material discharging device for a 3D printer. Background Art

[0002] Current 3D printers usually use nozzles to print out adhesive materials layer by layer to produce products. However, during the process of the nozzle melting the adhesive material at high temperature for printing, the adhesive material easily adheres to the nozzle and becomes waste, causing the nozzle to be clogged. In order to solve this problem, 3D printers in related technologies are equipped with wire brushes or plastic wipers to clean the nozzles. However, these will wear out to varying degrees over time and need to be replaced frequently, resulting in high maintenance costs.

[0003] When a 3D printer is changing to a different type or color of adhesive material or when debugging printing, the nozzle of the print head usually needs to extrude an extra section of material to ensure that the previous printed material is flushed clean and to avoid mixing of materials or colors during formal printing, so as to determine whether the print head can work properly. This extra section of material will be discarded as waste. Therefore, existing 3D printers need a device that can clean the print head and discharge the above waste to avoid waste accumulation on the 3D printer and affect the printer function. Utility Model Content

[0004] The utility model aims to provide a waste material discharging device for a 3D printer, which receives waste materials through a receiving plate and discharges the accumulated waste materials through a discharging port.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The waste material discharging device for a 3D printer comprises a shell, wherein an opening, a material receiving plate and a material outlet are arranged in the shell, the material receiving plate is used to receive the waste material, the material receiving plate is located between the opening and the material outlet, and the material receiving plate can slide to connect the opening with the material outlet.

[0007] The waste material squeezed out by the print head is received by the receiving plate at the opening. When a certain amount of waste material accumulates on the receiving plate, the receiving plate is slid open and the waste material falls to the discharge port. After falling, the receiving plate is slid in the opposite direction and the opening is closed.

[0008] Furthermore, a scraper plate is fixed at the opening, and the receiving plate can slide toward the direction of the scraper plate, and the scraper plate is located above the receiving plate.

[0009] The scraper plate is located above the material receiving plate, and the scraper plate and the material receiving plate can be vertically installed. When the material receiving plate slides, the opening is opened, and the scraper plate resists the waste until the waste falls from the opening.

[0010] Furthermore, the material receiving plate is fixedly connected with a sliding assembly, and the material receiving plate slides through the sliding assembly.

[0011] The sliding assembly drives the receiving plate to slide at the opening.

[0012] Furthermore, the sliding assembly includes a spring and a slider, the slider is fixedly connected to the material receiving plate, one end of the spring abuts against the shell, and the other end of the spring abuts against the slider.

[0013] When an external force is applied to the slider, the slider drives the receiving plate to slide toward the scraper plate. At this time, the slider squeezes the spring, the spring is compressed, and the opening is opened. When the external force applied to the slider disappears, the slider slides away from the scraper plate under the action of the spring elastic force. At this time, the spring returns to its original position and the opening is closed.

[0014] Furthermore, the waste discharge device also includes a pressure cover, which is fixedly connected to the shell to form a cavity. The slider is located in the cavity. The pressure cover is provided with a slide groove that passes through the upper and lower parts. The top of the slider extends upward from the slide groove, and the top of the slider is higher than the slide groove.

[0015] The slider and the receiving plate slide into the cavity formed by the pressure cover and the shell, the slider in the shell slides along the slide groove, and the slider extends upward from the guide groove to abut against the collision block of the print head. When the print head moves, the collision block abuts against the slider to drive the slider and the receiving plate to move.

[0016] Furthermore, a limiting groove is provided on the inner wall of the shell, and one end of the spring is located in the limiting groove and abuts against the inner wall of the shell.

[0017] The limit groove is used to limit the position of the spring to prevent it from being displaced when it is compressed and returns to its original position.

[0018] Furthermore, the scraper plate includes a main body plate and a mouth wiping plate, the mouth wiping plate is connected to the top of the main body plate, and the top height of the mouth wiping plate is higher than the shell

[0019] When the print head moves, the waste material squeezed out by the nozzle is scraped off by the upwardly extending nozzle wiping plate. The main body plate can be installed vertically with the material receiving plate, and the nozzle wiping plate can be parallel with the main body plate.

[0020] Furthermore, a first fixing rib is provided in the shell near the opening, a second fixing rib is provided in the shell above the limiting groove, the scraper plate is fixedly connected to the first fixing rib, and the pressure cover is fixedly connected to the first fixing rib and the second fixing rib.

[0021] The first fixing rib and the second fixing rib not only play the role of fixing the pressure cover and the scraper plate, but also play a supporting role for the shell.

[0022] A 3D printer comprises a print head and the above-mentioned waste material discharge device for the 3D printer. The print head is provided with a collision block, which can abut against a sliding block to drive the sliding block to slide.

[0023] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0024] The receiving plate in the waste discharge device is not only used to receive waste, but also to open and close the opening. After the receiving plate moves, the scraper plate pushes the waste to the opening and makes it fall to the discharge port. The receiving plate slides through a spring and a slider. The part of the slider that is higher than the pressure cover can resist the collision block of the print head. The movement of the print head drives the slider to slide, thereby driving the receiving plate to move. When the print head moves, the nozzle passes through the wiper plate on the top of the scraper plate, and the waste extruded from the nozzle is scraped off by the wiper plate. The device fully cleans the nozzle, not only can it discharge the waste extruded from the nozzle, but also can clean the residual waste on the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below by means of the accompanying drawings.

[0026] Figure 1 It is a schematic structural diagram of the initial state of the waste discharge device for a 3D printer.

[0027] Figure 2 for Figure 1 Schematic diagram of the structure when the slider moves until the spring is fully compressed.

[0028] Figure 3 An exploded view of a waste discharge device for a 3D printer.

[0029] Figure 4 A cross-sectional view of the shell.

[0030] Figure 5 A schematic diagram of the structure of a waste discharge device for a 3D printer in contact with a print head.

[0031] Figure 6 for Figure 1 Cross-sectional view along direction A.

[0032] Figure 7 for Figure 2 Cross-sectional view along direction A. DETAILED DESCRIPTION

[0033] like Figures 1 to 3 As shown, a waste discharge device for a 3D printer includes a shell 1, in which an opening 2, a receiving plate 3 and a discharge port 4 are provided. The receiving plate 3 is used to receive waste, and the receiving plate 3 is located between the opening 2 and the discharge port 4. The receiving plate 3 slides at the opening 2 through a sliding component to realize the opening and closing of the opening 2. When opened, the opening 2 is connected to the discharge port 4, and the waste on the receiving plate 3 falls through the opening 2 to the discharge port 4.

[0034] like Figure 3 and Figure 4As shown, the sliding assembly includes a spring 5 and a slider 6. The slider 6 is fixedly connected to the receiving plate 3. A limiting groove 8 is provided on the inner wall of the shell 1. One end of the spring 5 is located in the limiting groove 8 and abuts against the inner wall of the shell 1, and the other end of the spring 5 abuts against the slider 6.

[0035] like Figure 4 As shown, the housing 1 is provided with a slide groove 9, and the slider 6 slides along the slide groove 9. The waste discharge device includes a pressure cover 7 and a scraper plate 12. The pressure cover 7 is provided with a guide groove 10 that passes through from top to bottom. The top of the slider 6 extends upward from the guide groove 10, and the top of the slider 6 is higher than the guide groove 10. A first fixing rib 11 is provided near the opening 2 in the housing 1, and a second fixing rib 18 is provided above the limit groove 8. The scraper plate 12 is fixedly connected to the first fixing rib 11. The pressure cover 7 is pressed on the top of the scraper plate 12 and is fixedly connected to the first fixing rib 11 and the second fixing rib 18 by four screws 13. The scraper plate 12 includes a main body plate 19 and a mouth wiping plate 14. The main body plate 19 is installed roughly perpendicular to the material receiving plate 3. The mouth wiping plate 14 is connected to the top of the main body plate 19. The mouth wiping plate 14 is roughly parallel to the main body plate 19, and the top height of the mouth wiping plate 14 is higher than the housing 1.

[0036] like Figure 5 As shown, when the 3D printer is changed to a different type or color material or is being debugged for printing, the print head 17 moves to the top of the receiving plate 3. At this time, the initial position of the receiving plate 3 is as shown in FIG. Figure 1 and Figure 6 As shown, at this time, the receiving plate 3 closes the opening 2 and the discharge port 4; the nozzle 15 starts to extrude the waste material, and the waste material accumulates on the receiving plate 3. After the nozzle 15 finishes extruding, the print head 17 quickly moves along the Figure 5 and Figure 6 The arrow indicates the direction of movement, and the collision block 16 provided on the print head 17 drives the slider 6 to move, and the nozzle 15 passes over the nozzle wiping plate 14 , and the waste material adhering to the nozzle 15 is scraped off by the nozzle wiping plate 14 .

[0037] At the same time, the receiving plate 3 and the waste accumulated on the receiving plate 3 follow the movement of the slider 6, and the receiving plate 3 moves along the Figure 5 and Figure 6 The arrows shown in the figure indicate the direction of movement. When the waste passes under the scraper plate 12, it falls from the receiving plate 3 into the discharge port 4 connected to the opening 2, and the waste is discharged from the printer through the discharge port 4. At this time, the position of the receiving plate 3 is as follows: Figure 2 and Figure 7 As shown, after the waste is discharged, the print head 17 moves along Figure 7 Release the slider 6 in the direction of the arrow mark shown in the figure. At this time, the slider 6 moves back to the position as shown in the figure under the action of the spring 5. Figure 1 and Figure 6 state, and close the discharge port 4 again.

[0038] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A waste discharge device for a 3D printer, characterized in that: It comprises a shell, in which an opening, a material receiving plate and a material outlet are arranged. The material receiving plate is used to receive waste materials. The material receiving plate is located between the opening and the material outlet. The material receiving plate can slide to connect the opening with the material outlet.

2. The waste discharge device for a 3D printer according to claim 1, characterized in that: A scraper plate is fixed at the opening, and the receiving plate can slide toward the direction of the scraper plate, and the scraper plate is located above the receiving plate.

3. The waste discharge device for a 3D printer according to claim 2, characterized in that: The material receiving plate is fixedly connected with a sliding assembly, and the material receiving plate slides through the sliding assembly.

4. The waste discharge device for a 3D printer according to claim 3, characterized in that: The sliding assembly comprises a spring and a slider, wherein the slider is fixedly connected to the material receiving plate, one end of the spring abuts against the housing, and the other end of the spring abuts against the slider.

5. The waste discharge device for a 3D printer according to claim 4, characterized in that: The waste discharge device also includes a pressure cover, which is fixedly connected to the shell to form a cavity. The slider is located in the cavity. The pressure cover is provided with a slide groove that passes through the upper and lower parts. The top of the slider extends upward from the slide groove, and the top of the slider is higher than the slide groove.

6. The waste discharge device for a 3D printer according to claim 5, characterized in that: A limiting groove is provided on the inner wall of the shell, and one end of the spring is located in the limiting groove and abuts against the inner wall of the shell.

7. The waste discharge device for a 3D printer according to claim 2, characterized in that: The scraper plate comprises a main body plate and a mouth wiping plate, wherein the mouth wiping plate is connected to the top of the main body plate, and the top height of the mouth wiping plate is higher than the shell body.

8. The waste discharge device for a 3D printer according to claim 6, characterized in that: A first fixing rib is provided in the shell near the opening, a second fixing rib is provided in the shell above the limiting groove, the scraper plate is fixedly connected to the first fixing rib, and the pressure cover is fixedly connected to the first fixing rib and the second fixing rib.

9. A 3D printer, characterized in that: It comprises a print head and a waste discharge device for a 3D printer as claimed in any one of claims 1 to 8, wherein a collision block is provided on the print head, and the collision block can abut against the slider to drive the slider to slide.

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