A mixing device for 3D printing material production

Abstract

This utility model discloses a mixing device for 3D printing material production, belonging to the field of 3D printing material production. It includes a mixing tank, with a feeding funnel fixedly connected to the top of the mixing tank and a discharge pipe fixedly connected to one side. The inner bottom wall of the mixing tank is inclined, with the discharge pipe located on the lower side of the inner bottom wall. A stirring assembly and a wall scraping assembly are installed inside the mixing tank. A connecting pipe is rotatably connected to the end of the discharge pipe. Initially, the discharge port of the connecting pipe faces downwards. A power assembly is installed on the outer wall of the mixing tank to drive the connecting pipe to rotate. The advantage is that by rotatably connecting the connecting pipe to the end of the discharge pipe with its discharge port facing downwards, after material reception, the power assembly drives the connecting pipe to rotate, turning the discharge port upwards and preventing residual material from dripping.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing material production, and in particular to a mixing device for 3D printing material production. Background Technology

[0002] 3D printing, also known as additive manufacturing, is a rapid prototyping technology. It is a technology that uses digital model files as a basis and employs powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. 3D printing technology is the latest rapid prototyping device that utilizes technologies such as photopolymerization and paper lamination. During the processing of 3D printing filaments, powder raw materials and binders need to be mixed in a certain proportion.

[0003] A search revealed Chinese Patent Publication No. CN220548703U, which discloses a high-efficiency mixing device for 3D printing material production. The device includes a mixing tank, a crushing component located at the top of the mixing tank, and a stirring component located inside the mixing tank. The crushing component includes a crushing box fixed at the top of the mixing tank, two counter-rotating crushing rollers located inside the crushing box, a crushing motor located on one side of the crushing rollers, and a feed hopper fixed at the top of the crushing box. A discharge pipe runs through the bottom of the mixing tank away from the rotating motor. When the crushing motor is started, it drives the crushing rollers to rotate in opposite directions. When the raw material passes between the two crushing rollers, larger pieces of raw material are crushed into small particles. The pre-processed raw material enters the mixing tank, which facilitates uniform mixing.

[0004] After the material in the mixing tank is discharged, the remaining material at the outlet of the discharge pipe drips intermittently at a slow speed. If the container holding the discharged material is removed directly, the remaining material will drip onto the ground and cause waste. If the material is left to be discharged, the discharged material cannot be transported away in time, which will affect work efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a mixing device for 3D printing material production in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A mixing device for 3D printing material production includes a mixing tank, a feeding funnel fixedly connected to the top of the mixing tank, a discharge pipe fixedly connected to one side of the mixing tank, an inclined inner bottom wall of the mixing tank, and the discharge pipe located on the lower side of the inner bottom wall of the mixing tank. A stirring component and a wall scraping component are provided inside the mixing tank. A connecting pipe is rotatably connected to the end of the discharge pipe. In the initial state, the discharge port of the connecting pipe faces downward. A power component is provided on the outer wall of the mixing tank to drive the connecting pipe to rotate.

[0008] Preferably, the power assembly includes a driven gear fixedly connected to the outer wall of the connecting pipe, a mounting plate fixedly connected to the side wall of the mixing tank, a stepper motor fixedly connected to the mounting plate, a driving gear fixedly connected to the output shaft of the stepper motor, and the driving gear meshing with the driven gear.

[0009] Preferably, the stirring assembly includes a rotary motor fixedly connected to the top of the mixing tank, the output end of the rotary motor being connected to a rotating shaft via a coupling, the rotating shaft extending into the mixing tank, and multiple sets of circumferentially arranged stirring rods fixedly connected to the outer wall of the rotating shaft.

[0010] Preferably, the wall scraping assembly includes several circumferentially arranged connecting rods, which are fixedly connected to the outer wall of the rotating shaft. The ends of the connecting rods are fixedly connected to scrapers, which are in close contact with the inner wall of the mixing tank.

[0011] Preferably, there is an angle between the scraper and the axis of rotation.

[0012] Preferably, multiple sets of wall scraping assemblies are provided on the rotating shaft, and the connecting rods and scrapers in adjacent sets of wall scraping assemblies are staggered.

[0013] Preferably, the bottom wall of the mixing tank is evenly distributed with multiple sets of support legs.

[0014] The beneficial effect is that a connecting pipe is rotatably connected to the end of the discharge pipe, with the discharge port of the connecting pipe facing downwards. After the material is received, the connecting pipe is rotated by the power component, which rotates the discharge port of the connecting pipe upwards to prevent residual material from dripping.

[0015] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a mixing device for producing 3D printing materials according to the present invention;

[0018] Figure 2 This is a front view of a mixing device for producing 3D printing materials according to the present invention;

[0019] Figure 3 This is a right view of a mixing device for producing 3D printing materials according to the present invention;

[0020] Figure 4This is a schematic diagram of the internal structure of a mixing device for producing 3D printing materials according to the present invention.

[0021] The reference numerals in the attached drawings are explained as follows: 1. Mixing tank; 101. Feeding funnel; 102. Discharge pipe; 103. Support leg; 201. Rotary motor; 202. Rotating shaft; 203. Stirring rod; 301. Connecting rod; 302. Scraper; 401. Connecting pipe; 402. Driven gear; 403. Mounting plate; 404. Stepper motor; 405. Drive gear. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] like Figures 1-4 As shown, a mixing device for 3D printing material production includes a mixing tank 1. A feeding funnel 101 is fixedly connected to the top of the mixing tank 1, and a discharge pipe 102 is fixedly connected to one side of the mixing tank 1. A control valve is installed inside the discharge pipe 102. The inner bottom wall of the mixing tank 1 is inclined, and the discharge pipe 102 is located on the lower side of the inner bottom wall of the mixing tank 1. Multiple sets of support legs 103 are evenly distributed on the bottom wall of the mixing tank 1.

[0026] A stirring assembly is provided inside the mixing tank 1. The stirring assembly includes a rotary motor 201 bolted to the top of the mixing tank 1. The output end of the rotary motor 201 is connected to a rotary shaft 202 via a coupling. The rotary shaft 202 extends into the mixing tank 1. Multiple sets of circumferentially arranged stirring rods 203 are fixedly connected to the outer wall of the rotary shaft 202. When the rotary motor 201 is started, the rotary motor 201 drives the rotary shaft 202 to rotate the stirring rods 203, thereby stirring and mixing the various raw materials used to make printing materials in the mixing tank 1.

[0027] The mixing tank 1 is equipped with a wall scraping assembly, which includes several circumferentially arranged connecting rods 301. The connecting rods 301 are fixedly connected to the outer wall of the rotating shaft 202. The ends of the connecting rods 301 are fixedly connected to scrapers 302. The scrapers 302 are in close contact with the inner wall of the mixing tank 1. There is an angle between the scrapers 302 and the axis of the rotating shaft 202, so that the scrapers 302 can provide a downward force to the material, allowing the material to flow better towards the bottom of the mixing tank 1.

[0028] Multiple sets of wall scraping assemblies are provided on the rotating shaft 202. The connecting rods 301 and scrapers 302 in adjacent sets of wall scraping assemblies are staggered so that the scraper 302 below can scrape off the material flowing down from above in time.

[0029] The discharge pipe 102 is rotatably connected to a connecting pipe 401. In the initial state, the discharge port of the connecting pipe 401 faces downward. A power assembly is provided on the outer wall of the mixing tank 1. The power assembly is used to drive the connecting pipe 401 to rotate. The power assembly includes a driven gear 402 fixedly connected to the outer wall of the connecting pipe 401. A mounting plate 403 is fixedly connected to the side wall of the mixing tank 1. A stepper motor 404 is bolted to the mounting plate 403. A drive gear 405 is fixedly connected to the output shaft of the stepper motor 404. The drive gear 405 meshes with the driven gear 402. When the stepper motor 404 is started, the stepper motor 404 drives the drive gear 405 to rotate. The drive gear 405 meshes with the driven gear 402, thereby driving the driven gear 402 to drive the connecting pipe 401 to rotate.

[0030] Working principle: In use, the material is added into the mixing tank 1 through the feed funnel 101. The rotary motor 201 is started, which drives the rotating shaft 202 to rotate the stirring rod 203, mixing the various raw materials in the mixing tank 1. Simultaneously, the rotating shaft 202 rotates, driving the connecting rod 301 to rotate, which in turn drives the scraper 302 to rotate. The scraper 302 promptly scrapes off the material adhering to the inner wall of the mixing tank 1, ensuring thorough mixing. After mixing, the rotary motor 201 is turned off, and the control valve in the discharge pipe 102 is opened, allowing the material to pass through the discharge pipe 102 and the connecting rod 301. After the material in the mixing tank 1 is basically discharged through the pipe 401, the rotary motor 201 is started, which drives the rotating shaft 202 to rotate. The rotating shaft 202 drives the connecting rod 301 to rotate the scraper 302. The scraper 302 scrapes off the material adhering to the inner wall of the mixing tank 1. After the material is received, the stepper motor 404 is started, which drives the drive gear 405 to rotate. The drive gear 405 meshes with the driven gear 402, thereby driving the driven gear 402 to rotate the connecting pipe 401, turning the outlet of the connecting pipe 401 to the top to prevent residual material from dripping.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mixing device for 3D printing material production, comprising a mixing tank (1), wherein a feeding funnel (101) is fixedly connected to the top of the mixing tank (1), and a discharge pipe (102) is fixedly connected to one side of the mixing tank (1), wherein the inner bottom wall of the mixing tank (1) is inclined, and the discharge pipe (102) is located on the lower side of the inner bottom wall of the mixing tank (1), wherein a stirring assembly and a wall scraping assembly are provided inside the mixing tank (1), characterized in that: The discharge pipe (102) is rotatably connected to a connecting pipe (401). In the initial state, the discharge port of the connecting pipe (401) faces downward. The outer wall of the mixing tank (1) is provided with a power component, which is used to drive the connecting pipe (401) to rotate.

2. The mixing equipment for 3D printing material production according to claim 1, characterized in that: The power assembly includes a driven gear (402) fixedly connected to the outer wall of the connecting pipe (401), a mounting plate (403) fixedly connected to the side wall of the mixing tank (1), a stepper motor (404) fixedly connected to the mounting plate (403), a driving gear (405) fixedly connected to the output shaft of the stepper motor (404), and the driving gear (405) meshing with the driven gear (402).

3. The mixing equipment for 3D printing material production according to claim 1, characterized in that: The stirring assembly includes a rotary motor (201) fixedly connected to the top of the mixing tank (1). The output end of the rotary motor (201) is connected to a rotating shaft (202) via a coupling. The rotating shaft (202) extends into the mixing tank (1). Multiple sets of circumferentially arranged stirring rods (203) are fixedly connected to the outer wall of the rotating shaft (202).

4. The mixing equipment for 3D printing material production according to claim 3, characterized in that: The wall scraping assembly includes several circumferentially arranged connecting rods (301), which are fixedly connected to the outer wall of the rotating shaft (202). A scraper (302) is fixedly connected to the end of the connecting rod (301), and the scraper (302) is in close contact with the inner wall of the mixing tank (1).

5. A mixing device for 3D printing material production according to claim 4, characterized in that: There is an angle between the scraper (302) and the axis of the rotating shaft (202).

6. The mixing equipment for 3D printing material production according to claim 4, characterized in that: Multiple sets of the wall scraping assemblies are provided on the rotating shaft (202), and the connecting rod (301) and the scraper (302) in two adjacent sets of wall scraping assemblies are staggered.

7. The mixing equipment for 3D printing material production according to claim 1, characterized in that: The bottom wall of the mixing tank (1) is evenly distributed with multiple sets of support legs (103).

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