Discharging device for 3D printing metal part

Abstract

The utility model discloses a blanking device for 3D printing metal parts, and relates to the technical field of 3D printing, the blanking device comprises an equipment main body, a top cover is arranged above the equipment main body, a blanking hopper is arranged below the equipment main body, a driving assembly is arranged above the top cover, the driving assembly comprises a speed reducer, and the speed reducer is connected with the equipment main body. A motor is installed above the speed reducer, a main gear is installed at the output end of the motor, an annular gear ring is installed on the periphery of the main gear, three sets of auxiliary gears are installed between the gear ring and the main gear, a crushing piece is installed at the lower ends of the auxiliary gears, and the crushing piece comprises connecting rods connected with the auxiliary gears. And an assembling frame is mounted at the lower end of the connecting rod, and a grinding roller is mounted in the assembling frame through a bearing. The problems that when an existing 3D printing discharging device is used, two sets of motors need to drive a grinding roller to conduct grinding, so that the overall operation cost is high, and use by a user is not facilitated are solved.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, specifically to a feeding device for 3D printed metal parts. Background Technology

[0002] 3D printing, or rapid prototyping technology, is a technique that uses digital model files as a basis and employs powdered metals or plastics and other bondable materials to construct objects layer by layer. It is often used in mold making, industrial design and other fields to create models. Common 3D printing metal materials include titanium alloys, cobalt-chromium alloys, stainless steel and aluminum alloys. In addition, there are precious metal powder materials such as gold and silver used for printing jewelry.

[0003] For example, the announcement number CN209792603U, entitled "An anti-clogging raw material feeding device for 3D printing of metal materials," includes a processing box and an installation port. The bottom center of the processing box has a feeding port, and guide plates are fixed on both sides above the feeding port. An installation frame is fixed inside the feeding port, and a fixing block is welded to the outer end of the installation frame. Through the feeding port, installation frame, traction rod, and unblocking column, when the internal part of the feeding port is blocked due to the excessive falling speed of the powdered metal raw material, the device uses the installation frame as a support base point and manually controls the traction rod to push upward. The unblocking column with a pointed top will use the squeezing and penetrating force generated during the pushing process to clear the blockage. This structure not only makes the device have a certain unblocking structure, but also makes the entire raw material falling process smoother through unblocking.

[0004] The existing 3D printing blanking device mentioned above requires two sets of motors to drive the grinding rollers for grinding, resulting in high overall operating costs and making it inconvenient for users. Therefore, it does not meet the current needs, and a blanking device for 3D printing metal parts is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a feeding device for 3D printed metal parts, so as to solve the problem mentioned in the background art that the existing 3D printing feeding device requires two sets of motors to drive the grinding rollers for grinding, resulting in high overall operating costs and being unfavorable to users.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a feeding device for 3D printed metal parts, comprising: a main body of the equipment, a top cover installed on the top of the main body of the equipment, a feeding hopper installed below the main body of the equipment, a driving assembly installed on the top cover of the top cover, the driving assembly including a reducer, a motor installed above the reducer, a main gear installed at the output end of the motor, an annular gear ring installed around the main gear, three sets of secondary gears installed between the gear ring and the main gear, and a crushing component installed at the lower end of the secondary gears.

[0007] Preferably, the crushing component includes a connecting rod connected to the auxiliary gear, an assembly frame is mounted on the lower end of the connecting rod, and a crushing roller is mounted inside the assembly frame via bearings.

[0008] Preferably, the main gear is connected to three sets of auxiliary gears via a connecting bracket.

[0009] Preferably, an anti-clogging stirring component is installed at the lower end of the main gear, and the lower end of the anti-clogging stirring component extends into the hopper.

[0010] Preferably, the anti-clogging stirring assembly includes a drive shaft, a first stirring blade is mounted below the drive shaft, a second stirring blade is mounted at the lower end of the first stirring blade, and the size of the first stirring blade is larger than that of the second stirring blade.

[0011] Preferably, a feed inlet is provided on the side wall of the main body of the equipment, and a screen is installed between the main body of the equipment and the hopper.

[0012] Preferably, a column is installed at the middle position of the sieve plate, and a shaft hole is opened at the middle position of the column.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, the main gear is driven by a motor to rotate, and the secondary gear meshes with it to move in a ring on the gear ring. During the movement, the crushing roller below is moved by the connection of the connecting rod. During the displacement, the crushing roller crushes the 3D printing powder on the screen, reducing the volume of the powder so that it falls from the hole of the screen. The above structure can drive the three crushing rollers to perform displacement crushing operation by a set of motors, which makes the cost lower, the crushing efficiency higher, and improves the feeding effect of 3D printing powder.

[0015] (2) In this utility model, when the main gear rotates, the first stirring blade and the second stirring blade are driven to rotate through the connection of the transmission shaft. The first stirring blade and the second stirring blade are both located in the feeding hopper, which can perform secondary crushing of the powder falling into the feeding hopper and can prevent the powder from accumulating in the feeding hopper. The feeding hopper is wider at the top and narrower at the bottom. The size of the first stirring blade is larger than that of the second stirring blade, so that the structure of the stirring blade is more in line with the feeding hopper. The second stirring blade is closer to the feeding port of the feeding hopper. During rotation, it can drive the powder at that location to rotate, which can effectively prevent the feeding port from being blocked. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the drive component structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the anti-clogging stirring component of this utility model;

[0019] Figure 4 This is a schematic diagram of the sieve disc structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the hopper of this utility model;

[0021] In the diagram: 1. Main body of the equipment; 101. Feed inlet; 102. Column; 103. Shaft hole; 104. Screen plate; 2. Top cover; 3. Drive assembly; 301. Motor; 302. Reducer; 303. Main gear; 304. Secondary gear; 305. Gear ring; 306. Connecting frame; 307. Crushing parts; 308. Connecting rod; 309. Assembly frame; 310. Crushing roller; 4. Anti-clogging mixing assembly; 401. Drive shaft; 402. First mixing blade; 403. Second mixing blade; 5. Feed hopper. 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] Please see Figure 1-5This utility model provides an embodiment of a feeding device for 3D printed metal parts, comprising: a main body 1, a top cover 2 installed on the top of the main body 1, a feeding hopper 5 installed on the bottom of the main body 1, a feeding port 101 provided on the side wall of the main body 1, a screen plate 104 installed between the main body 1 and the feeding hopper 5, a column 102 installed in the middle of the screen plate 104, and a shaft hole 103 opened in the middle of the column 102; the feeding port 101 is used to add powder required for 3D printing. Of course, multiple feeding ports 101 can be provided (not shown in the figure) to facilitate the addition of different or the same metal materials in different positions. After the powder enters, it falls onto the screen plate 104. Small-volume powder falls through the holes of the screen plate 104, while large-volume powder is crushed by the subsequent crushing component 307 and falls down. The falling powder enters the feed hopper 5 and is guided by the feed hopper 5. The column 102 is used to limit the position of the powder, so that the powder is located around the column 102, which facilitates the contact between the crushing roller 310 and the powder. The shaft hole 103 is designed to allow the drive shaft 401 to pass through.

[0024] Among them, a drive assembly 3 is installed on the top cover 2. The drive assembly 3 includes a reducer 302. A motor 301 is installed on the top of the reducer 302. A main gear 303 is installed at the output end of the motor 301. A ring gear 305 is installed around the main gear 303. Three sets of auxiliary gears 304 are installed between the ring gear 305 and the main gear 303. A crushing component 307 is installed at the lower end of the auxiliary gear 304. The crushing component 307 includes a connecting rod 308 connected to the auxiliary gear 304. An assembly frame 309 is installed at the lower end of the connecting rod 308. A crushing roller 310 is installed inside the assembly frame 309 through a bearing. The main gear 303 is connected to the three sets of auxiliary gears 304 respectively through a connecting frame 306.

[0025] The main gear 303 is driven to rotate by the motor 301, and the secondary gear 304 meshes with it, moving in a ring on the gear ring 305. During the movement, the crushing roller 310 below is displaced through the connection of the connecting rod 308. The crushing roller 310 crushes the 3D printing powder on the screen 104 during the displacement, reducing the volume of the powder so that it falls through the holes of the screen 104. The above structure can drive three crushing rollers 310 to perform displacement and crushing operations through a set of motors 301, which reduces the cost, increases the crushing efficiency, and improves the feeding effect of 3D printing powder.

[0026] Please see Figure 3 , Figure 5 The lower end of the main gear 303 is equipped with an anti-blocking stirring component 4, and the lower end of the anti-blocking stirring component 4 extends into the hopper 5. The anti-blocking stirring component 4 includes a drive shaft 401, a first stirring blade 402 is installed below the drive shaft 401, and a second stirring blade 403 is installed at the lower end of the first stirring blade 402.

[0027] When the main gear 303 rotates, it drives the first stirring blade 402 and the second stirring blade 403 to rotate through the transmission shaft 401. The first stirring blade 402 and the second stirring blade 403 are both located in the feeding hopper 5, which can perform secondary crushing of the powder falling into the feeding hopper 5 and prevent the powder from accumulating in the feeding hopper 5. The feeding hopper 5 is wider at the top and narrower at the bottom. The size of the first stirring blade 402 is larger than that of the second stirring blade 403, so that the structure of the stirring blade is more in line with the feeding hopper 5. The second stirring blade 403 is closer to the feeding port of the feeding hopper 5. During rotation, it can drive the powder at that location to rotate, which can effectively prevent the feeding port from being blocked.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A blanking device for 3D printed metal pieces, comprising a device body (1), characterized in that: The top of the device body (1) is provided with a top cover (2), the bottom of the device body (1) is provided with a lower hopper (5), the top of the top cover (2) is provided with a driving assembly (3), the driving assembly (3) comprises a speed reducer (302), the top of the speed reducer (302) is provided with a motor (301), the output end of the motor (301) is provided with a main gear (303), the periphery of the main gear (303) is provided with an annular gear ring (305), three groups of auxiliary gears (304) are arranged between the gear ring (305) and the main gear (303), the lower end of the auxiliary gear (304) is provided with a crushing piece (307).

2. The blanking device for a 3D printed metal piece according to claim 1, characterized in that: The crushing piece (307) comprises a connecting rod (308) connected with the auxiliary gear (304), the lower end of the connecting rod (308) is provided with an assembly frame (309), the inside of the assembly frame (309) is provided with a crushing roller (310) through a bearing.

3. The blanking device for a 3D printed metal piece according to claim 1, characterized in that: The lower end of the main gear (303) is connected with the three groups of auxiliary gears (304) through a connecting frame (306).

4. The blanking device for a 3D printed metal piece according to claim 1, characterized in that: The lower end of the main gear (303) is provided with an anti-blocking stirring assembly (4), and the lower end of the anti-blocking stirring assembly (4) extends into the lower hopper (5).

5. The blanking device for a 3D printed metal piece according to claim 4, characterized in that: The anti-blocking stirring assembly (4) comprises a transmission shaft (401), the lower end of the transmission shaft (401) is provided with a first stirring blade (402), the lower end of the first stirring blade (402) is provided with a second stirring blade (403), and the size of the first stirring blade (402) is larger than that of the second stirring blade (403).

6. The blanking device for a 3D printed metal piece according to claim 1, characterized in that: The sidewall of the device body (1) is provided with an inlet (101), and a sieve disc (104) is arranged between the device body (1) and the lower hopper (5).

7. The blanking device for a 3D printed metal piece according to claim 6, characterized in that: The middle position of the sieve disc (104) is provided with a column (102), and the middle position of the column (102) is provided with a shaft hole (103).

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