Broken material detection device for 3D printer

Abstract

The utility model provides a broken material detection device for a 3D printer, and relates to the field of 3D printing, the broken material detection device comprises a detection box, a feeding wheel and a driven wheel, the feeding wheel and the driven wheel are symmetrically arranged in the detection box, rotating points of the feeding wheel and the driven wheel are located on the same horizontal plane, and the driven wheel is elastically arranged in the detection box through a spring. The consumable wire is arranged to be wound on the two rollers in the S shape, one of the two rollers can slide, the two rollers are made to be close to each other through breakage of the consumable, the other roller is braked through the brake rod on one roller, detection of the breakage or use-up state of the consumable is achieved without a sensor, and a corresponding solution is provided.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing, and more specifically, to a material breakage detection device for 3D printers. Background Technology

[0002] 3D printing technology, as a crucial component of advanced manufacturing, is transforming the manufacturing landscape at an unprecedented pace. Its core lies in constructing three-dimensional objects by layering materials, a process that demands a continuous supply of filaments. However, in practical applications of 3D printing, filament shortages frequently occur, becoming a significant factor affecting print quality and efficiency. Filament shortages not only interrupt printing jobs but can also damage printing equipment and increase maintenance costs.

[0003] When the consumables run out, the detection device fails to stop the printer in time, causing the consumable tray to continue spinning idly. Idle spinning not only exacerbates the waste of consumables, but the rapid rotation of the consumable tray can also cause consumables to spill, polluting the printing environment and potentially damaging delicate internal components of the printer.

[0004] Therefore, we have made improvements to this and proposed a material breakage detection device for 3D printers. Utility Model Content

[0005] The purpose of this invention is to address the current problem where, when consumables run out, the detection device fails to stop the printer in time, causing the consumable tray to continue spinning idly. This idling not only exacerbates consumable waste but may also cause consumables to spill due to the rapid rotation of the tray, polluting the printing environment.

[0006] In order to achieve the above-mentioned objectives, this utility model provides a 3D printer material breakage detection device to improve the above-mentioned problems.

[0007] The application is as follows:

[0008] It includes a detection box, and a feeding wheel and a driven wheel symmetrically arranged in the detection box with their rotation points on the same horizontal plane. The driven wheel is elastically arranged in the detection box by a spring, and the elastic direction of the driven wheel is the line connecting the centers of the feeding wheel and the driven wheel.

[0009] The detection box has an inlet hole and an outlet hole on both sides along the horizontal tangent direction of the feeding wheel. The highest point of the circular surface of the feeding wheel and the lowest point of the circular surface of the driven wheel are in contact with the consumable line.

[0010] A friction wheel is fixedly connected to the feeding wheel, and a brake rod is rotatably connected to the driven wheel. The friction wheel and the brake rod are coplanar, and the brake rod is slidably connected to a limiting rod that restricts its rotation.

[0011] When the consumable line breaks, the brake lever contacts the friction wheel to brake the rotation of the feed wheel.

[0012] Preferably, the two ends of the consumable line extend from the inlet and outlet ports to the outside of the test box, respectively.

[0013] Preferably, both the feeding wheel and the driven wheel are provided with annular grooves that are the same diameter as the consumable line. The highest point and the lowest point of the annular groove are on the same horizontal straight line as the lowest point of the circular feed hole and the highest point of the circular driven wheel, respectively.

[0014] Preferably, the brake lever consists of a circular plate and two straight rods, with the straight rods facing the friction wheel and symmetrically arranged on both sides of the circular plate.

[0015] Preferably, the brake rod has a limiting hole, the limiting rod is laterally fixed to the inner wall of the detection box, and the limiting rod extends through the limiting hole to the space between the two straight rods.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] 1. In order to solve the problem that there is no backup means to monitor consumables after sensor failure in the prior art, this application sets the consumable line in an "S" shape around two rollers, one of which can slide. When the consumable breaks, the two rollers move closer together and the brake rod on one roller brakes the other roller. This realizes the detection of the state of consumable breakage or depletion without the need for sensors and provides a corresponding solution. Attached Figure Description

[0019] Figure 1 A front view of a 3D printer material breakage detection device provided in this application;

[0020] Figure 2 This application provides a schematic diagram of the internal structure of a 3D printer material breakage detection device.

[0021] Figure 3 This application provides a schematic diagram illustrating the connection relationship between a limiting rod and a detection box for a 3D printer material breakage detection device.

[0022] Figure 4 This application provides a schematic diagram of the connection relationship between the driven wheel and the brake rod in a 3D printer material breakage detection device.

[0023] The image shows:

[0024] 1. Detection box; 2. Feed port; 3. Discharge port; 4. Feeding wheel; 5. Friction wheel; 6. Driven wheel; 7. Brake lever; 8. Consumable line; 9. Limiting rod; 10. Limiting hole. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] As described in the background section, when consumables run out, the detection device cannot stop the printer in time, causing the consumable tray to continue spinning idly. Idle spinning not only exacerbates the waste of consumables, but may also cause consumables to spill due to the rapid rotation of the consumable tray, polluting the printing environment.

[0027] To solve this technical problem, this utility model provides a 3D printer filament breakage detection device, which can adaptively form a brake when the filament thread breaks, preventing the filament thread from spinning freely and extending to other positions.

[0028] For details, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A device for detecting material breakage in a 3D printer specifically includes:

[0029] The test box 1 includes a feed wheel 4 and a driven wheel 6 symmetrically arranged in the test box 1 with their rotation points on the same horizontal plane. The driven wheel 6 is elastically set in the test box 1 by a spring, and the elastic direction of the driven wheel 6 is the line connecting the centers of the feed wheel 4 and the driven wheel 6. Since the driven wheel 6 rotates on the same horizontal plane as the feed wheel 4, when the consumable thread 8 is wound in an "S" shape around the feed wheel 4 and the driven wheel 6, when the consumable thread 8 extends from the test box 1 to the outside of the print head, it can squeeze the driven wheel 6 to move a certain distance away from the feed wheel 4. At this time, the consumable thread 8 is in a taut state. This state applies pressure to the driven wheel 6 and also ensures that the consumable thread 8 is always in a taut state when it reaches the print head, which can avoid the problem of uneven consumable thread feeding.

[0030] The detection box 1 has an inlet hole 2 and an outlet hole 3 on both sides along the horizontal tangent direction of the feeding wheel 4. The highest point of the circular surface of the feeding wheel 4 and the lowest point of the circular surface of the driven wheel 6 are in point contact with the consumable line 8. By setting the inlet hole 2 and the outlet hole 3 on different horizontal planes, the consumable line 8 can be better set into an "S" shape, which ensures that the consumable line 8 is always in a stretched state and wrapped around the feeding wheel 4 and the driven wheel 6 under the limit of the inlet and outlet positions, and the consumable line 8 can better apply pressure to the driven wheel 6.

[0031] A friction wheel 5 is fixedly connected to the feeding wheel 4, and a brake rod 7 is rotatably connected to the driven wheel 6. The friction wheel 5 and the brake rod 7 are coplanar. The brake rod 7 is slidably connected to the limiting rod 9 that restricts its rotation. The rotating brake rod 7 enables the driven wheel 6 to rotate in the detection box 1. At the same time, the brake rod 7 remains relatively stationary with the detection box 1 under the restriction of the limiting rod 9 and the upper limit hole 10 of the brake rod 7.

[0032] When the consumable thread 8 breaks, the brake lever 7 contacts the friction wheel 5, braking the feed wheel 4 to rotate. As the consumable thread 8 loses its pressure on the driven wheel 6, the driven wheel 6 moves back to its initial position under the tension of the spring. At this time, the brake lever 7 connected to the driven wheel 6 moves towards the friction wheel 5 under the restriction of the limit lever 9, so that the arc surface of the brake lever 7 contacts the friction surface of the friction wheel 5 to form friction braking. This prevents the feed wheel 4 from continuing to feed the consumable thread 8 after braking, thus preventing a large amount of consumable thread 8 from accumulating and affecting printing or the surrounding environment.

[0033] For an example, please refer to... Figure 1 , Figure 2 , Figure 3 and Figure 4 A 3D printer filament breakage detection device, wherein the two ends of the filament wire 8 extend from the feed hole 2 and the discharge hole 3 to the outside of the detection box 1, and the filament wire 8 of sufficient length passes through the detection box 1 to form a compressive force.

[0034] Both the feeding wheel 4 and the driven wheel 6 have annular grooves with the same diameter as the consumable line 8. The highest and lowest points of the annular grooves are on the same horizontal straight line as the lowest point of the circular feed hole 2 and the highest point of the circular driven wheel 6, respectively.

[0035] The brake lever 7 consists of a circular plate and two straight rods. The straight rods face the friction wheel 5 and are symmetrically arranged on both sides of the circular plate. The brake lever 7 of sufficient length ensures that the driven wheel 6 can be stably braked by the spring after the extrusion force is lost. It should be added that the friction force generated by the elastic restoring force of the spring can counteract the rotational force of the feed wheel 4.

[0036] A limiting hole 10 is provided on the brake lever 7, and a limiting rod 9 is horizontally fixed to the inner wall of the detection box 1. The limiting rod 9 extends through the limiting hole 10 to the space between the two straight rods.

[0037] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A device for detecting the end of material for a 3D printer, characterized in that, The utility model provides a kind of detection box and the feeding wheel (4) and driven wheel (6) for being symmetrically arranged in detection box (1), and the rotation point of driven wheel (6) is located in the same horizontal plane in detection box (1), and the elastic direction of driven wheel (6) is the center line of feeding wheel (4) and driven wheel (6) circle; Two sides of the detection box (1) are respectively provided with feeding hole (2) and discharging hole (3) along the horizontal tangent direction of feeding wheel (4) up and down, and the highest point of the circular surface of feeding wheel (4) and the lowest point of the circular surface of driven wheel (6) are respectively in point contact with consumable line (8); The friction wheel (5) is fixedly connected on the feeding wheel (4), the brake lever (7) is rotatably connected on the driven wheel (6), the friction wheel (5) is coplanar with the brake lever (7), and the brake lever (7) is slidably connected on the limiting rod (9) limiting its rotation; When the consumable line (8) is broken, the brake lever (7) contacts the friction wheel (5) to brake the rotation of the feeding wheel (4).

2. The device for detecting the end of material for a 3D printer according to claim 1, wherein, The two ends of the consumable line (8) respectively extend to the outside of the detection box (1) from the feeding hole (2) and the discharging hole (3).

3. The device for detecting the end of material for a 3D printer according to claim 2, wherein, The feeding wheel (4) and the driven wheel (6) are both provided with annular grooves with the same diameter as the consumable line (8), and the highest point and the lowest point of the annular grooves are respectively on the same horizontal line with the lowest point of the feeding hole (2) and the highest point of the circular surface of the driven wheel (6).

4. The device for detecting the end of material according to claim 3, wherein, The brake lever (7) is composed of a circular plate and two straight rods, and the straight rods are symmetrically arranged on both sides of the circular plate towards the friction wheel (5).

5. The device for detecting the end of material according to claim 4, wherein, The limiting hole (10) is formed on the brake lever (7), the limiting rod (9) is transversely fixedly connected on the inner side wall of the detection box (1), and the limiting rod (9) extends to between the two straight rods through the limiting hole (10).

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