Stirring device for 3D printing materials

Abstract

The utility model provides a 3D printing material stirring device which comprises a hollow shell, a stirring cavity and a discharging cavity are sequentially arranged in the shell in the feeding direction, a piston is arranged at a feeding port of the stirring cavity, a stirring structure and a piece are arranged in the shell, a transmission shaft penetrates through the side wall of one side of the shell and extends into the shell, and the transmission shaft is arranged in the shell. The extending direction of the transmission shaft is perpendicular to the extending direction of the stirring shaft, the stirring structure comprises the transmission shaft, the stirring shaft, a driving wheel, a first transmission wheel and stirring blades, the stirring shaft extends to the discharging cavity from the stirring cavity, and the driving wheel is arranged outside the transmission shaft in a sleeving mode; the stirring shaft is sleeved with a first transmission wheel and a plurality of stirring blades, and the driving wheel and the first transmission wheel are meshed through gears to form intersecting shaft gear transmission. Continuous stirring of printing materials is achieved through the stirring blades, and it is guaranteed that the printing materials cannot precipitate.

Description

Technical Field

[0001] The utility model belongs to the field of 3D printing and relates to a stirring device for 3D printing materials. Background Art

[0002] 3D printing (3DP) is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses digital model files as the basis and uses adhesive materials to construct objects by printing layer by layer. 3D printing is usually achieved using a digital technology material printer. It is often used to make models in the fields of mold manufacturing, industrial design, etc., and then gradually used for the direct manufacturing of some products. There are already parts printed using this technology. This technology has applications in jewelry, footwear, industrial design, architecture, engineering and construction, automobiles, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms and other fields.

[0003] The properties of some commonly used 3D printing materials are similar to the state of suspension. Since the 3D printing process is long, it is inevitable that the printed materials will be left to stand for a long time, which may cause the suspension material to precipitate and lead to uneven and poor quality of the finished product. According to the inventor's search, patent CN219881314U discloses an automatic stirring device for metal powder for 3D printing, which can realize automatic stirring of metal powder for 3D printing by providing a stirring mechanism for metal powder for 3D printing; by providing a cooling mechanism for metal powder for 3D printing, the inside of the device barrel can be fully and automatically cooled to avoid the heat generated when stirring the metal powder for 3D printing. It mainly solves the adverse effects of heat generation, and does not deeply disclose how to stir the 3D printing materials evenly. Utility Model Content

[0004] The utility model proposes a stirring device for 3D printing materials because the 3D printing process is long and it is inevitable that the printed materials will be left standing for a long time. The long standing may cause the suspension material to precipitate and result in uneven and poor quality of the finished product.

[0005] A stirring device for 3D printing materials. The device comprises a hollow shell, wherein a stirring chamber and a discharging chamber are sequentially arranged in the shell along the feeding direction, a piston is arranged at the feeding port of the stirring chamber, a stirring structure is arranged in the shell, and the stirring structure comprises a transmission shaft, a stirring shaft, a driving wheel, a first transmission wheel and stirring blades, wherein the transmission shaft penetrates a side wall of the shell and extends into the shell, the extension direction of the transmission shaft is perpendicular to the extension direction of the stirring shaft, the stirring shaft extends from the stirring chamber to the discharging chamber, the driving wheel is connected to the outer shell of the transmission shaft, the first transmission wheel and a plurality of stirring blades are connected to the outer shell of the stirring shaft, and the gears between the driving wheel and the first transmission wheel are meshed to form an intersecting axis gear transmission.

[0006] Preferably, the feed port of the stirring chamber is arranged at the top of the shell, and the discharge port of the discharge chamber is arranged at the bottom of the shell; and / or the opening area of ​​the discharge port and the feed port is smaller than the cross-sectional area of ​​the shell.

[0007] Preferably, the cross-sectional area of ​​the discharge chamber is smaller than the cross-sectional area of ​​the stirring chamber.

[0008] Preferably, the piston comprises a sealed cavity and a push rod, the push rod passes through the sealed cavity and moves up and down in the sealed cavity, a scraper is provided at the lower end of the push rod, and a handle is provided at the upper end of the push rod.

[0009] Preferably, the scraper is arranged at the lower end of the push rod, and the scraper is perpendicular to the push rod.

[0010] Preferably, the sealing chamber is detachably mounted on the feed port.

[0011] Preferably, there are multiple stirring blades.

[0012] Preferably, the stirring blade is disc-shaped.

[0013] Preferably, the stirring blade is provided with a plurality of small holes.

[0014] Preferably, the stirring blades are arranged on the stirring shaft in an inclined manner, and the adjacent blades are inclined in opposite directions.

[0015] Preferably, it further comprises a motor, which is arranged outside the shell and connected to the transmission shaft.

[0016] Preferably, it also includes a horizontal axis, which is arranged in the vertical direction of the transmission shaft and parallel to the transmission shaft, and a second transmission wheel is connected to the outer shell of the horizontal axis, and the gears of the second transmission wheel and the first transmission wheel are meshed to form an intersecting axis gear transmission.

[0017] As described above, the utility model has the following beneficial effects:

[0018] The utility model realizes continuous stirring of printing materials through stirring blades, ensures that the printing materials will not settle, and ensures the quality of the final 3D printed products. At the same time, the printing materials can be directly ejected through the piston structure, saving unnecessary material consumption, and is convenient and economical to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram of a stirring device for 3D printing materials according to the present invention.

[0020] Figure 2 This is a diagram of the stirring structure of the present utility model.

[0021] Reference numerals:

[0022] 1 Housing

[0023] 2 Feed inlet

[0024] 3 Discharge cavity

[0025] 4 Piston

[0026] 41 Sealed chamber

[0027] 42 Putter

[0028] 43 Scraper

[0029] 51 Drive shaft

[0030] 52 stirring shaft

[0031] 53 Driving wheel

[0032] 54 First transmission wheel

[0033] 55 Mixing blade

[0034] 7 Horizontal axis

[0035] 8 Second transmission wheel DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the protection scope of the present invention.

[0037] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0038] The present application provides a device for stirring 3D printing materials, such as Figure 1 As shown, it includes a hollow shell 1, in which a stirring chamber and a discharging chamber are sequentially arranged along the feeding direction, a piston 4 is arranged at the feeding port 2 of the stirring chamber, a stirring structure is arranged in the shell 1, and the stirring structure includes a transmission shaft 51, a stirring shaft 52, a driving wheel 53, a first transmission wheel 54 and a stirring blade 55, the transmission shaft 51 passes through a side wall of the shell 1 and extends into the shell 1, the extension direction of the transmission shaft 51 is perpendicular to the extension direction of the stirring shaft 52, the stirring shaft 52 extends from the stirring chamber to the discharging chamber, the transmission shaft 51 is externally connected with a driving wheel 53, the stirring shaft 52 is externally connected with a first transmission wheel 54 and a plurality of stirring blades 55, and the gears between the driving wheel 53 and the first transmission wheel 54 are meshed to form an intersecting axis gear transmission.

[0039] In a preferred embodiment, the feed port 2 of the stirring chamber is arranged at the top of the shell 1, and the discharge port of the discharge chamber is arranged at the bottom of the shell 1; and / or, the opening area of ​​the discharge port 3 and the feed port 2 is smaller than the cross-sectional area of ​​the shell 1.

[0040] In a preferred embodiment, the cross-sectional area of ​​the discharge cavity is smaller than the cross-sectional area of ​​the stirring cavity. Since the discharge nozzles have various specifications, the general-purpose nozzles available on the market are very small and cannot be connected to the housing 1. The protruding discharge cavity 3 is designed to facilitate the replacement of the discharge nozzle.

[0041] In a preferred embodiment, the piston 4 includes a sealed cavity 41 and a push rod 42. The push rod 42 penetrates the sealed cavity 41 and moves up and down in the sealed cavity 41. A scraper 43 is provided at the lower end of the push rod 42, and a handle is provided at the upper end of the push rod 42. The scraper 43 is provided at the lower end of the push rod 42, and the scraper 43 is perpendicular to the push rod 42. The edge of the scraper 43 fits the cavity wall of the sealed cavity 41. In a specific implementation, the push plate pushes the scraper 43 to move downward, and promotes the ink to enter the housing 1 by squeezing air.

[0042] In a preferred embodiment, the sealing chamber 41 is detachably mounted on the feed port 2, and the piston 4 is used to control the speed of ink extrusion. The piston 4 can be removed to add materials. After the piston 4 is installed, the external printing needle is connected to the discharge port 3, and air pressurization can be used to promote the material to enter the discharge port 3 and be ejected through the printing needle.

[0043] In a preferred embodiment, there are several stirring blades 55, which are installed in the housing 1. The stirring blades 55 can also be installed in the discharge chamber 3, and the corresponding blade area should be suitable for the cross-sectional area of ​​the discharge chamber 3. A better stirring effect is achieved. In order to facilitate installation and achieve free rotation, the area of ​​the stirring blade 55 should be smaller than the cross-sectional area of ​​the housing 1. At the same time, the area of ​​the stirring blade 55 should not be too small to avoid a poor stirring effect. The size of the stirring blade 55 can be determined according to actual needs.

[0044] In a preferred embodiment, the stirring blade 55 is disc-shaped. In a more preferred embodiment, the stirring blade 55 is provided with a plurality of small holes. This design facilitates the upward and downward flow of the printing material.

[0045] In a preferred embodiment, it also includes a motor, which is arranged outside the housing 1, and is connected to the transmission shaft 51. The clockwise and counterclockwise rotation of the motor can drive the transmission shaft 51 to rotate in different directions, thereby driving the driving wheel 53, and the driving wheel 53 continuously rotates in different directions, thereby driving the first transmission wheel 54 and the stirring shaft 52 to rotate in continuously changing directions. In a preferred embodiment, the stirring blades 55 are tilted on the stirring shaft 52, and the adjacent blades are tilted in opposite directions. Multiple stirring blades 55 are cross-distributed, and the side surfaces are wavy, which can prevent the precipitation of printing materials and facilitate the smooth flow of printing materials, thereby achieving a better stirring effect.

[0046] In a preferred embodiment, it further includes a horizontal shaft 7, which is perpendicular to the transmission shaft 51 and parallel to the transmission shaft 51 or the axis is on the same straight line, and a second transmission wheel 8 is connected to the outer surface of the horizontal shaft 7, and the gears of the second transmission wheel 8 and the first transmission wheel 54 are meshed to form an intersecting axis gear transmission. The second transmission wheel 8 can rotate with the first transmission wheel 54 and has a certain supporting effect on the first transmission wheel 54. The driving wheel 53, the second transmission wheel 8, and the first transmission wheel 54 are bevel gears, which belong to the existing technology and can be purchased on the market.

[0047] Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A stirring device for 3D printing materials, characterized in that: The invention comprises a hollow shell (1), wherein a stirring chamber and a discharging chamber (3) are sequentially arranged in the shell (1) along the feeding direction, and a piston (4) is arranged at the feeding port (2) of the stirring chamber. A stirring structure is arranged in the shell (1), and the stirring structure comprises a transmission shaft (51), a stirring shaft (52), a driving wheel (53), a first transmission wheel (54) and stirring blades (55). The transmission shaft (51) passes through a side wall of the shell (1) and extends into the shell (1). The extension direction of the transmission shaft (51) and the extension direction of the stirring shaft (52) are perpendicular to each other. The stirring shaft (52) extends from the stirring chamber to the discharging chamber (3). The driving wheel (53) is connected to the outer shell of the transmission shaft (51), and the first transmission wheel (54) and a plurality of stirring blades (55) are connected to the outer shell of the stirring shaft (52). The gears of the driving wheel (53) and the first transmission wheel (54) are meshed to form an intersecting axis gear transmission.

2. The stirring device for 3D printing materials according to claim 1, characterized in that: The feed inlet (2) of the stirring chamber is arranged at the top of the shell (1), and the discharge outlet of the discharge chamber (3) is arranged at the bottom of the shell (1); And / or, the opening area of ​​the discharge port and the feed port (2) is smaller than the cross-sectional area of ​​the shell (1).

3. The stirring device for 3D printing materials according to claim 1, characterized in that: The cross-sectional area of ​​the discharge chamber (3) is smaller than the cross-sectional area of ​​the stirring chamber.

4. The stirring device for 3D printing materials according to claim 1, characterized in that: The piston (4) comprises a sealed cavity (41) and a push rod (42). The push rod (42) passes through the sealed cavity (41) and moves up and down in the sealed cavity (41). A scraper (43) is provided at the lower end of the push rod (42), and a handle is provided at the upper end of the push rod (42).

5. The stirring device for 3D printing materials according to claim 4, characterized in that: The scraper (43) is arranged at the lower end of the push rod (42), and the scraper (43) is perpendicular to the push rod (42).

6. The stirring device for 3D printing materials according to claim 4, characterized in that: The sealing chamber (41) is detachably mounted on the feed port (2).

7. The stirring device for 3D printing materials according to claim 1, characterized in that: The stirring comprises at least one of the following technical features: 1) There are multiple stirring blades (55); 2) The stirring blade (55) is disc-shaped; 3) The stirring blade (55) is provided with a plurality of small holes.

8. The stirring device for 3D printing materials according to claim 1, characterized in that: The stirring blades (55) are arranged obliquely on the stirring shaft (52), and adjacent blades are inclined in opposite directions.

9. The stirring device for 3D printing materials according to claim 1, characterized in that: The invention also comprises a horizontal shaft (7), wherein the horizontal shaft (7) is arranged in a vertical direction of the transmission shaft (51) and is parallel to the transmission shaft (51), and a second transmission wheel (8) is connected to the outer shell of the horizontal shaft (7), and the gears of the second transmission wheel (8) and the first transmission wheel (54) are meshed to form an intersecting axis gear transmission.

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