Feeding device capable of preventing material breakage and used for 3D printing

Abstract

The utility model discloses an anti-material-breaking feeding device for 3D printing, and belongs to the technical field of 3D printing feeding, the anti-material-breaking feeding device for 3D printing comprises a feeding box, a box cover installed on the top of the feeding box and a hopper installed on the box cover, a discharging opening is formed in the bottom of the feeding box, and a feeding opening is formed in the bottom of the feeding box. An outer cylinder is installed below the feeding box, an inner cylinder is fixedly connected to the inner side of the outer cylinder, a butt joint in butt joint with the discharging opening is integrally formed at the top end of the inner cylinder, a heating coil is installed on the outer wall of the bottom end of the inner cylinder in an attached mode, and a driving motor is installed on the upper surface of the box cover. The feeding spiral blade is driven to rotate synchronously, so that materials in the feeding box enter the inner barrel through the discharging port, material blockage is prevented, the heating coil is started synchronously, the materials conveyed downwards by the pressurizing spiral blade are heated and melted, and finally the materials are extruded out of the outer barrel, the materials can be effectively prevented from being blocked in the feeding process, and then material breakage is avoided.

Description

Technical Field

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

[0002] A 3D printer, also known as a three-dimensional printer, is a device that creates three-dimensional objects by stacking materials layer by layer. Its working principle is based on digital model files, using powdered metals or plastics and other bondable materials to construct objects by printing layer by layer. 3D printing technology is also called additive manufacturing because it creates objects by adding material rather than subtracting it.

[0003] Patent publication number CN218366524U discloses a 3D printing feeding device to prevent material interruption, including a feeding box and a support platform. The feeding box is fixedly connected to the top of the support platform. An anti-interruption mechanism is provided above the feeding box, and an anti-blocking mechanism is provided at the bottom of the inner cavity of the feeding box. The anti-interruption mechanism includes a raw material storage box located above the feeding box. This utility model uses a radar level gauge and a level monitoring ramp to constantly monitor the height of the raw material in the feeding box. When the height of the raw material is lower than the level monitoring ramp, the spare raw material in the inner cavity of the raw material storage box is discharged into the feeding box through the cooperation of a solenoid valve controller, a solenoid valve, and a guide pipe. An alarm sounds to remind the staff to add raw material to the raw material storage box in a timely manner, preventing feeding interruptions due to the limited capacity of the feeding box.

[0004] However, in patent publication number CN218366524U, the output end of the motor drives the straight rod and the stirring rod to rotate, so that the stirring rod stirs the raw material above the discharge pipe in the feeding box to prevent the raw material from clogging above the discharge pipe. However, when the material passes through the narrow discharge pipe, it is easy to get blocked, which will lead to material breakage. Therefore, we propose a material breakage prevention feeding device for 3D printing to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a feeding device for 3D printing that prevents material breakage. It drives the feeding spiral blades to rotate synchronously, allowing the material in the feeding box to enter the inner cylinder through the discharge port, thus preventing material blockage. Simultaneously, the heating coil is turned on to heat and melt the material conveyed downward by the pressurized spiral blades, and finally extrudes it out of the outer cylinder. This effectively prevents material blockage during the feeding process, thereby avoiding material breakage.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A feeding device for 3D printing that prevents material breakage includes a feeding box, a box cover installed on the top of the feeding box, and a hopper installed on the box cover. The bottom of the feeding box has a discharge port.

[0010] An outer cylinder is installed below the feeding box, and an inner cylinder is fixedly connected to the inner side of the outer cylinder. The top of the inner cylinder has an integrally formed butt joint that is opposite to the discharge port, and a heating coil is fitted to the outer wall of the bottom end of the inner cylinder.

[0011] A drive motor is installed on the upper surface of the box cover. The power output end of the drive motor is connected to a drive shaft that passes through the feeding box and extends to the bottom of the inner cylinder. Feeding spiral blades are installed on the drive shaft corresponding to the outer wall of the connector. Pressurizing spiral blades are installed on the drive shaft corresponding to the outer wall of the heating coil.

[0012] A radar level gauge and an audible and visual alarm are respectively installed on one side of the drive motor, and the detection end of the radar level gauge penetrates through the box cover. A control host is installed on the side wall of the feeding box.

[0013] Furthermore, the outer diameter of the connector is adapted to the inner diameter of the discharge port, and the inner diameter of the connector is adapted to the outer diameter of the feeding spiral blade.

[0014] Furthermore, the top outer wall of the inner cylinder is integrally formed with a connecting frame that is welded to the inner wall of the outer cylinder.

[0015] Furthermore, the outer diameter of the pressurizing helical blade is adapted to the inner diameter of the inner cylinder.

[0016] Furthermore, the bottom end of the outer cylinder is provided with a discharge head, and the discharge head is electrically connected to the inner cylinder.

[0017] Furthermore, the output terminal of the radar level gauge is electrically connected to the input terminal of the control host, and the output terminal of the control host is electrically connected to the input terminals of the drive motor, the heating coil, and the audible and visual alarm, respectively.

[0018] Furthermore, both the inner cylinder and the outer cylinder are made of stainless steel.

[0019] 3. Beneficial Effects

[0020] Compared with existing technologies, the advantages of this utility model are:

[0021] (1) In this scheme, when feeding, the control host controls the drive motor to work and drives the transmission shaft to rotate, and drives the feeding spiral blade to rotate synchronously, so that the material in the feeding box enters the inner cylinder through the discharge port to prevent material blockage. At the same time, the heating coil is turned on to heat and melt the material conveyed downward by the pressure spiral blade, and finally squeezed out of the outer cylinder. This can effectively prevent material blockage during the feeding process and thus avoid material interruption.

[0022] (2) In this scheme, when the material in the feeding box decreases, the material is monitored in real time by the radar level gauge. When the upper layer height of the material is lower than the set minimum lower limit in the feeding box, the signal is transmitted to the control host and then converted into an alarm signal and transmitted to the sound and light alarm. The material is added through the hopper to ensure the continuous supply of printing raw materials and avoid material shortage. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a side view of the outer cylinder of this utility model;

[0025] Figure 3 This is a cross-sectional view of the outer cylinder AA portion of this utility model;

[0026] Figure 4 This is a schematic diagram of the bottom structure of the feeding box of this utility model;

[0027] Figure 5 This is a schematic diagram of the top structure of the inner cylinder of this utility model.

[0028] Explanation of the labels in the diagram:

[0029] 1. Feeding box; 2. Box cover; 3. Hopper; 4. Discharge port; 5. Outer cylinder; 6. Inner cylinder; 7. Connecting joint; 8. Heating coil; 9. Drive motor; 10. Transmission shaft; 11. Feeding screw blades; 12. Pressurizing screw blades; 13. Discharge head; 14. Radar level gauge; 15. Audible and visual alarm; 16. Control host. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0031] Example:

[0032] Please see Figure 1-5A feeding device for 3D printing that prevents material breakage includes a feeding box 1, a box cover 2 installed on the top of the feeding box 1, and a hopper 3 installed on the box cover 2. The bottom of the feeding box 1 is provided with a discharge port 4.

[0033] An outer cylinder 5 is installed below the feeding box 1. An inner cylinder 6 is fixedly connected to the inner side of the outer cylinder 5. The top of the inner cylinder 6 is integrally formed with a butt joint 7 that is opposite to the discharge port 4. A heating coil 8 is fitted to the outer wall of the bottom end of the inner cylinder 6.

[0034] A drive motor 9 is installed on the upper surface of the box cover 2. The power output end of the drive motor 9 is connected to a drive shaft 10 that passes through the feeding box 1 and extends to the bottom of the inner cylinder 6. A feeding spiral blade 11 is installed on the outer wall of the drive shaft 10 corresponding to the joint 7. A pressurizing spiral blade 12 is installed on the outer wall of the drive shaft 10 corresponding to the heating coil 8.

[0035] A radar level gauge 14 and an audible and visual alarm 15 are respectively installed on one side of the drive motor 9, and the detection end of the radar level gauge 14 penetrates through the box cover 2. A control host 16 is installed on the side wall of the feeding box 1.

[0036] It should be noted that by adding an appropriate amount of printing material to the upper material box 1 using the hopper 3 and monitoring it in real time using the radar level gauge 14, when the material is full, the radar level gauge 14 transmits a signal to the control host 16, and then converts it into an alarm signal to the audible and visual alarm 15 to stop feeding.

[0037] When feeding is required, the control host 16 controls the drive motor 9 to work and drive the transmission shaft 10 to rotate, and drives the feeding spiral blades 11 to rotate synchronously, so that the material in the feeding box 1 enters the inner cylinder 6 through the discharge port 4 to prevent material blockage. At the same time, the heating coil 8 is turned on to heat and melt the material conveyed downward by the pressure spiral blades 12, and finally squeeze out of the outer cylinder 5. This can effectively prevent material blockage during the feeding process, thereby avoiding material interruption.

[0038] When the material in the feeding hopper 1 decreases, the radar level gauge 14 monitors the material in real time. When the upper layer height of the material is lower than the set minimum limit in the feeding hopper 1, the signal is transmitted to the control host 16, and then converted into an alarm signal and transmitted to the audible and visual alarm 15. The material is added through the hopper 3 to ensure a continuous supply of printing raw materials and avoid material shortage.

[0039] like Figure 3 , Figure 5 As shown, the outer diameter of the connector 7 is matched with the inner diameter of the discharge port 4, and the inner diameter of the connector 7 is matched with the outer diameter of the feeding spiral blade 11.

[0040] It should be noted that after the connector 7 is inserted into the inner side of the discharge port 4, the drive motor 9 works and drives the transmission shaft 10 to rotate, and drives the feeding spiral blade 11 to rotate synchronously, so that the material in the loading box 1 enters the inner cylinder 6 through the discharge port 4, preventing material blockage.

[0041] like Figure 5 As shown, the top outer wall of the inner cylinder 6 is integrally formed with a connecting frame that is welded to the inner wall of the outer cylinder 5.

[0042] It should be noted that this ensures the stability of the inner cylinder 6 standing upright inside the outer cylinder 5.

[0043] like Figure 3 As shown, the outer diameter of the pressurizing spiral blade 12 is adapted to the inner diameter of the inner cylinder 6, and the bottom end of the outer cylinder 5 is provided with a discharge head 13, which is connected to the inner cylinder 6 in a conductive manner.

[0044] It should be noted that the heating coil 8 heats and melts the material conveyed downward by the pressurized spiral blades 12, and finally extrudes it out of the outer cylinder 5 through the discharge head 13.

[0045] like Figure 1 As shown, the output terminal of the radar level gauge 14 is electrically connected to the input terminal of the control host 16, and the output terminal of the control host 16 is electrically connected to the input terminals of the drive motor 9, the heating coil 8 and the audible and visual alarm 15 respectively.

[0046] It should be noted that the radar level gauge 14 model can be BRD518, and the control host 16 model can be J4125-IT-17CM.

[0047] Both the inner cylinder 6 and the outer cylinder 5 are made of stainless steel.

[0048] In use: Add an appropriate amount of printing material to the upper material box 1 using the hopper 3, and monitor it in real time using the radar level gauge 14. When the material is full, the radar level gauge 14 transmits the signal to the control host 16, and then converts it into an alarm signal to the audible and visual alarm 15 to stop feeding.

[0049] When feeding is required, the control host 16 controls the drive motor 9 to work and drive the transmission shaft 10 to rotate, and drives the feeding spiral blades 11 to rotate synchronously, so that the material in the feeding box 1 enters the inner cylinder 6 through the discharge port 4 to prevent material blockage. At the same time, the heating coil 8 is turned on to heat and melt the material conveyed downward by the pressure spiral blades 12, and finally squeeze out of the outer cylinder 5. This can effectively prevent material blockage during the feeding process, thereby avoiding material interruption.

[0050] When the material in the feeding hopper 1 decreases, the radar level gauge 14 monitors the material in real time. When the upper layer height of the material is lower than the set minimum limit in the feeding hopper 1, the signal is transmitted to the control host 16, and then converted into an alarm signal and transmitted to the audible and visual alarm 15 to add material through the hopper 3 to ensure a continuous supply of printing raw materials.

[0051] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A feeding device for 3D printing with anti-broken material, comprising a feeding box (1), a box cover (2) installed on the top of the feeding box (1), and a hopper (3) installed on the box cover (2), characterized in that: The bottom of the feeding box (1) is provided with a feeding port (4); An outer cylinder (5) is installed below the feeding box (1), and an inner cylinder (6) is fixedly connected to the inner side of the outer cylinder (5). The top of the inner cylinder (6) is integrally formed with a butt joint (7) that is opposite to the discharge port (4). A heating coil (8) is fitted to the outer wall of the bottom end of the inner cylinder (6). A drive motor (9) is installed on the upper surface of the box cover (2). The power output end of the drive motor (9) is connected to a drive shaft (10) that passes through the feeding box (1) and extends to the bottom of the inner cylinder (6). A feeding spiral blade (11) is installed on the outer wall of the connecting joint (7). A pressurizing spiral blade (12) is installed on the outer wall of the heating coil (8). A radar level gauge (14) and an audible and visual alarm (15) are respectively installed on one side of the drive motor (9), and the detection end of the radar level gauge (14) penetrates through the box cover (2). A control host (16) is installed on the side wall of the feeding box (1).

2. The feeding device for 3D printing with anti-broken material as described in claim 1, characterized in that: The outer diameter of the connector (7) is adapted to the inner diameter of the discharge port (4), and the inner diameter of the connector (7) is adapted to the outer diameter of the feeding spiral blade (11).

3. The material breakage prevention 3D printing feeding device according to claim 1, characterized in that: The top outer wall of the inner cylinder (6) is integrally formed with a connecting frame that is welded to the inner wall of the outer cylinder (5).

4. The material breakage prevention 3D printing feeding device according to claim 1, characterized in that: The outer diameter of the pressurized spiral blade (12) is adapted to the inner diameter of the inner cylinder (6).

5. The material breakage prevention 3D printing feeding device according to claim 1, characterized in that: The bottom end of the outer cylinder (5) is provided with a discharge head (13), and the discharge head (13) is electrically connected to the inner cylinder (6).

6. The material breakage prevention 3D printing feeding device according to claim 1, characterized in that: The output terminal of the radar level gauge (14) is electrically connected to the input terminal of the control host (16), and the output terminal of the control host (16) is electrically connected to the input terminals of the drive motor (9), the heating coil (8) and the audible and visual alarm (15).

7. The material breakage prevention 3D printing feeding device according to claim 1, characterized in that: Both the inner cylinder (6) and the outer cylinder (5) are made of stainless steel.

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