3D printer leveling device

Abstract

The utility model discloses a 3D printer leveling device, and relates to the technical field of 3D printer equipment. The LED lamp comprises a PCB (printed circuit board), a touch switch is arranged on the PCB and close to the center of the edge of the PCB, a battery holder is arranged at the center of the edge of the side, away from the touch switch, of the PCB, the battery holder is electrically connected with the touch switch, an LED lamp is arranged on the side, close to the touch switch, of the battery holder, the LED lamp is electrically connected with the battery holder, and the touch switch, the LED lamp and the battery holder are connected in series. The ultrathin touch switch is matched with the SMD LED lamp, the leveling operation can be started when the device is placed below the nozzle, the leveling is correct when the nozzle presses the touch switch to lighten the LED lamp, the structure is simple, the leveling is accurate, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to a leveling device for a 3D printer, belonging to the technical field of 3D printer equipment. Background Art

[0002] The basic forming principle of an FDM 3D printer is to extrude consumables through a nozzle and attach them to the printing platform, layer by layer for forming. The distance between the printing nozzle and the printing platform should be strictly controlled. Especially when printing the first layer, if the nozzle is too far from the printing platform, the extruded consumables may not be able to adhere to the printing platform during the printing process; if the distance is too close, it may lead to excessive extrusion pressure of the consumables, thus causing leakage or blockage. The above are common printing failure cases, usually caused by leveling errors. Therefore, the leveling effect of the printer is crucial for the success rate of 3D printing.

[0003] The so-called leveling means that when the nozzle height is 0, the height of the printing platform is adjusted by rotating the hand-tightening nut under the printing platform, so that the surface of the printer platform can just touch the nozzle.

[0004] Conventional manual leveling requires first resetting the print head, laying an A4 paper between the printing platform and the nozzle, rotating the hand-tightening nut under the printing platform to adjust the distance between the printing platform and the nozzle, and judging whether the height is appropriate by repeatedly pulling the A4 paper to feel the friction force. However, due to the differences in the thickness and hardness of the paper and the fact that the feel varies from person to person and is difficult to quantify, it is always necessary to try repeatedly many times to achieve a satisfactory effect each time of leveling. Content of the Utility Model

[0005] The purpose of the utility model is to provide a leveling device for a 3D printer aiming at the defects or deficiencies in the prior art. By cooperating an ultra-thin tactile switch with a surface-mounted LED lamp, the leveling operation can be started by placing the device under the nozzle. When the nozzle presses the tactile switch to light up the LED lamp, the leveling height is achieved. The structure is simple, the leveling is precise, and it is convenient to use.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: It includes a PCB board 1, on which a tactile switch 2 is arranged. The tactile switch 2 is arranged near the center of the edge of the PCB board 1. At the center of the edge on the side of the PCB board 1 away from the tactile switch 2, a battery holder 5 is arranged. The battery holder 5 is electrically connected to the tactile switch 2. Near the tactile switch 2 on one side of the battery holder 5, an LED lamp 4 is arranged. The LED lamp 4 is electrically connected to the battery holder 5, and the tactile switch 2, the LED lamp 4, and the battery holder 5 are connected in series.

[0007] Furthermore, a resistor 3 is arranged on the side of the tactile switch 2 near the LED lamp 4. The resistor 3 is electrically connected to the tactile switch 2 and the LED lamp 4.

[0008] Further, the PCB board 1 has an oval structure.

[0009] Further, the tactile switch 2, resistor 3, and LED lamp 4 are arranged on the same side.

[0010] Further, a button battery is arranged inside the battery holder 5.

[0011] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: By using an ultra-thin tactile switch in cooperation with a surface-mounted LED lamp, the leveling operation can be started by placing the device under the nozzle. When the nozzle presses the tactile switch to light up the LED lamp, the leveling is correct. The structure is simple, the leveling is precise, and the use is convenient. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 It is a schematic structural diagram of the present utility model;

[0014] Figure 2 It is a schematic diagram of the usage state of the present utility model;

[0015] Figure 3 It is Figure 2 a side view of

[0016] Description of the reference numerals: PCB board 1, tactile switch 2, resistor 3, LED lamp 4, battery holder 5, printing platform 6, hand-tightening nut 7, nozzle 8. Detailed Embodiments

[0017] Refer to Figures 1 - 3As shown in the figure, the technical solution adopted in this specific embodiment is as follows: It includes a PCB board 1, on which a tactile switch 2 is arranged. The tactile switch 2 is arranged near the center of the edge of the PCB board 1. At the center of the edge of the side of the PCB board 1 away from the tactile switch 2, a battery holder 5 is arranged. The battery holder 5 is electrically connected to the tactile switch 2. On the side of the battery holder 5 close to the tactile switch 2, an LED lamp 4 is arranged. The LED lamp 4 is electrically connected to the battery holder 5. And the tactile switch 2, the LED lamp 4, and the battery holder 5 are connected in series. In this embodiment, the leveling device mainly operates by using the pressing and conduction of the tactile switch to the LED lamp as the leveling reference position positioning signal. When in use, first, the nozzle needs to be zeroed, and at the same time, measure the overall thickness of the PCB board after the tactile switch is pressed tightly. This thickness is the height that the nozzle needs to be lifted. Place the leveling device at one corner of the printing platform, and align the tactile switch with the nozzle. Turn the hand-tightened nut to lift the printing platform so that the tactile switch contacts the nozzle until the tactile switch is pressed tightly by the nozzle to conduct the switch, making the entire circuit conduct and the LED lamp light up. Stop turning the hand-tightened nut and remove the leveling device. Place the leveling device at the other three corners of the printing platform in turn and repeat the previous operation. When the LED lamp is lit in the remaining three operations, the leveling operation is completed. The leveling accuracy is improved through four-corner positioning. The operation is simple and the accuracy is high;

[0018] It can be understood that in this embodiment, the tactile switch needs to select the version with the smallest height, the shortest pressing stroke, and the smallest pressing force to reduce errors. At the same time, the PCB board is a single-layer board, which also reduces the thickness, reduces errors, and saves costs.

[0019] More specifically, a resistor 3 is arranged on the side of the tactile switch 2 close to the LED lamp 4. The resistor 3 is electrically connected to the tactile switch 2 and the LED lamp 4. The conduction of the LED lamp is protected by setting the resistor.

[0020] More specifically, the PCB board 1 is of an oval structure. The oval structure can prevent the edge of the PCB board from scratching the user and ensure operation safety.

[0021] More specifically, the tactile switch 2, the resistor 3, and the LED lamp 4 are arranged on the same side. All components are arranged on the same side, which is more convenient for installation and observation during the leveling operation.

[0022] More specifically, a button battery is arranged in the battery holder 5. In this embodiment, a battery holder structure is shown. In another embodiment, it can also be set as a battery holder structure for other dry batteries to cooperate with other types of dry batteries for use.

[0023] Working principle of the utility model: Before adjustment, first zero the nozzle 8, measure the thickness when the touch switch 2 is pressed, and lift the nozzle 8 by the same height. At this time, place the leveling device at one corner position of the printing platform 6, and align the touch switch 2 with the nozzle 8. Rotate the hand-tightening nut 7 at the bottom of the printing platform to raise the printing platform 6. When the touch switch contacts the nozzle 8 and is pressed by the nozzle 8 to trigger the switch, the entire circuit is conducted, causing the LED lamp 4 to light up. Stop turning the hand-tightening nut 7, remove the leveling device, and place the leveling device at the other three corners in turn to repeat lighting the LED lamp 4, thus completing the overall leveling of the printing platform 6. By lighting the LED lamp 4 multiple times, the leveling operation can be completed quickly and accurately, ensuring the normal progress of the printing operation.

[0024] The above is only used to illustrate the technical solution of the utility model and not to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the utility model should be covered within the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A 3D printer leveling device, characterized in that: The invention comprises a PCB (1), wherein a light touch switch (2) is arranged on the PCB (1), the light touch switch (2) is arranged near the center of the edge of the PCB (1), a battery holder (5) is arranged at the center of the edge of the PCB (1) away from the light touch switch (2), the battery holder (5) is electrically connected to the light touch switch (2), an LED light (4) is arranged on the side of the battery holder (5) close to the light touch switch (2), the LED light (4) is electrically connected to the battery holder (5), and the light touch switch (2), the LED light (4) and the battery holder (5) are connected in series.

2. A 3D printer leveling device according to claim 1, characterized in that: A resistor (3) is provided on the side of the touch switch (2) close to the LED lamp (4), and the resistor (3) is electrically connected to the touch switch (2) and the LED lamp (4).

3. A 3D printer leveling device according to claim 1, characterized in that: The PCB board (1) is an elliptical structure.

4. A 3D printer leveling device according to claim 2, characterized in that: The touch switch (2), resistor (3) and LED lamp (4) are arranged on the same side.

5. A 3D printer leveling device according to claim 1, characterized in that: A button battery is arranged in the battery holder (5).

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