Rolling powder mixing structure

Abstract

The utility model discloses a rolling powder mixing structure which comprises a support, an outer barrel is connected to the support in a rotating mode, a driving device used for driving the outer barrel to rotate is arranged between the outer barrel and the support, an opening is formed in one end of the outer barrel, and a powder mixing barrel which can be installed in and pulled away from the opening is arranged in the outer barrel. And a locking structure for locking the powder mixing barrel in the outer barrel is arranged between the outer barrel and the powder mixing barrel. The utility model has the advantages of high efficiency, uniformity, safety, convenience and space saving.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field especially relates to a rolling powder mixing structure. BACKGROUND

[0002] 3D printing technology is increasingly widely used in various fields, but its material utilization rate and printing quality still have room for improvement. Due to the high printing cost, the old powder that is not melted is usually mixed with new powder and reused. However, uniform mixing of powder is a key factor to ensure printing quality. If the powder is not mixed uniformly, it will cause various defects of the printed part, such as uneven density, rough surface, and decreased mechanical properties, etc., which not only causes waste of materials, but also increases the difficulty of post-processing, ultimately leading to reduced production efficiency and economic loss.

[0003] Traditional powder mixing equipment usually adopts paddle mixing mechanism. This method has some disadvantages. First, the efficiency of paddle mixing is low, and a long mixing time is needed to achieve ideal uniformity. This is because the movement mode of the paddle is relatively simple, and it can only rely on rotation and stirring to mix the powder particles with each other, and the mixing process is relatively slow. Second, paddle mixing is easy to form mixing dead angles at the edge or corner of the container. Due to the limited shape and movement range of the paddle, it is difficult to fully cover the entire mixing space, resulting in that the powder in some areas cannot be effectively mixed, thereby affecting the overall mixing uniformity. In addition, the traditional paddle powder mixing equipment also has disadvantages in terms of operation safety, convenience and automation degree, which needs manual intervention, increasing the complexity of operation and the possibility of error. Finally, such equipment usually needs a separate powder mixing area, occupying valuable production space.

[0004] Therefore, it is necessary to further improve and perfect the prior art to overcome these disadvantages, and the utility model is made based on this situation. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at overcoming the deficiencies of the prior art, and provides a rolling powder mixing structure which is efficient, uniform, safe, convenient and space-saving.

[0006] The utility model is realized through the following technical solutions:

[0007] To solve the above technical problems, the utility model provides a rolling powder mixing structure, which comprises a support, an outer barrel is rotatably connected to the support, a driving device for driving the outer barrel to rotate is arranged between the outer barrel and the support, one end of the outer barrel is provided with an opening, a powder mixing barrel which can be loaded and pulled out from the opening is arranged in the outer barrel, and a locking structure for locking the powder mixing barrel in the outer barrel is arranged between the outer barrel and the powder mixing barrel.

[0008] In order to further solve the technical problems to be solved by the utility model, the rolling powder mixing structure provided by the utility model comprises a locking structure, which comprises a circumferential limiting structure for limiting circumferential rotation of the powder mixing barrel and an axial limiting structure for limiting movement of the powder mixing barrel.

[0009] In order to further solve the technical problems to be solved by the utility model, the rolling powder mixing structure provided by the utility model comprises a circumferential limiting structure, which comprises a plurality of axial guide grooves uniformly arranged on the inner wall of the outer barrel and a plurality of guide rail structures arranged on the outer wall of the powder mixing barrel, the guide rail structures are inserted into the corresponding guide grooves and are matched together, so as to guide and limit the circumferential rotation of the powder mixing barrel.

[0010] In order to further solve the technical problems to be solved by the utility model, the rolling powder mixing structure provided by the utility model comprises a circumferential limiting structure, which comprises a plurality of axial guide grooves uniformly arranged on the inner wall of the outer barrel and a plurality of guide rail structures arranged on the outer wall of the powder mixing barrel, the guide rail structures are inserted into the corresponding guide grooves and are matched together, so as to guide and limit the circumferential rotation of the powder mixing barrel.

[0011] In order to further solve the technical problems to be solved by the utility model, the rolling powder mixing structure provided by the utility model comprises an axial limiting structure, which comprises a baffle rotatably connected to one side of the opening, and a lock catch arranged at the free end of the baffle and used for detachable connection with the other side of the opening.

[0012] In order to further solve the technical problems to be solved by the utility model, the rolling powder mixing structure provided by the utility model comprises a baffle, and a buffer pad arranged at the inner side of the baffle and used for abutting against the outer end surface of the powder mixing barrel.

[0013] In order to further solve the technical problems to be solved by the utility model, the rolling powder mixing structure provided by the utility model comprises an outer barrel, and a support frame arranged below the suspended end of the outer barrel, and at least two support rollers rotatably connected to the support frame and abutting against the outer wall of the outer barrel.

[0014] In order to further solve the technical problems to be solved by the utility model, the rolling powder mixing structure provided by the utility model comprises a support roller, which is a rubber wheel with elasticity.

[0015] In order to further solve the technical problems to be solved by the utility model, the rolling powder mixing structure provided by the utility model comprises an outer barrel, and a support frame arranged below the suspended end of the outer barrel, and at least two support rollers rotatably connected to the support frame and abutting against the outer wall of the outer barrel.

[0016] In order to further solve the technical problems to be solved by the utility model, the rolling powder mixing structure provided by the utility model comprises a powder mixing barrel, and a plurality of handles arranged on the powder mixing barrel.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] In the application, due to the double-barrel cooperation design of the outer barrel and the powder mixing barrel and the efficient rolling mixing mode, the powder mixing uniformity is high, the efficiency is high, and the whole operation process is simple and easy to operate, and can be completed by a single person. BRIEF DESCRIPTION OF DRAWINGS

[0019] The specific embodiments of the utility model will be further described in detail below with reference to the drawings, wherein:

[0020] Figure 1 is the three-dimensional structure schematic diagram of the utility model;

[0021] Figure 2 is the exploded schematic diagram of the utility model. DETAILED DESCRIPTION

[0022] In order to make the technical personnel in the field better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0023] The utility model provides a kind of rolling powder mixing structure, to solve the problems such as low efficiency, poor uniformity, complex operation of existing 3D printing powder mixing equipment.The structure design is ingenious, easy to operate, and the mixing effect is remarkable, and the specific implementation mode is as follows:

[0024] As shown in Figure 1 And Figure 2 Rolling powder mixing structure mainly includes support 1, outer barrel 2, driving device 3, powder mixing barrel 4 and locking structure. Support 1 provides stable support for the whole structure. Outer barrel 2 can rotate around support 1, and its rotating power is provided by driving device 3. Driving device 3 can be motor, hydraulic device or pneumatic device, etc., and the utility model does not make specific limitation to this. One end of outer barrel 2 is provided with opening 21, for loading and taking out powder mixing barrel 4.

[0025] Powder mixing barrel 4 can slide into and out along the guide groove 22 on the inner wall of outer barrel 2. In order to ensure that powder mixing barrel 4 does not displace relatively during rotation, locking structure is designed to firmly fix powder mixing barrel 4 in outer barrel 2. The locking structure includes circumferential limiting structure and axial limiting structure.

[0026] Circumferential limiting structure is as follows: a plurality of axial guide grooves 22 are uniformly distributed on the inner wall of outer barrel 2, and corresponding to them is guide rail structure 41 on the outer wall of powder mixing barrel 4. When powder mixing barrel 4 is loaded into outer barrel 2, guide rail structure 41 will be inserted into corresponding guide groove 22, to realize accurate circumferential limiting, and guide powder mixing barrel 4 to slide into outer barrel 2 stably along guide groove 22. Preferably, powder mixing barrel 4 is designed as non-circular, and its guide rail structure 41 can be naturally formed by the chamfer of the side edge of powder mixing barrel 4, which simplifies the manufacturing process and improves the fitting accuracy.

[0027] The axial limiting structure adopts a combination of a baffle 23 and a lock 24. One end of the baffle 23 is rotationally connected to one side of the opening 21, and the other end (free end) of the baffle 23 is detachably connected to the lock 24 on the other side of the opening 21. After the mixing barrel 4 is loaded into the outer barrel 2, the baffle 23 is rotated to the closed position and is fixedly connected to the other side of the outer barrel 2 through the lock 24, thereby limiting the axial movement of the mixing barrel 4.

[0028] The lock 24 can be in various forms, with the purpose of fixedly connecting the baffle 23 and the outer barrel 2, thereby locking the mixing barrel 4 in the outer barrel 2. The following lists several possible implementations:

[0029] 1. Buckle type lock: similar to the buckle on a luggage or toolbox, a protruding buckle is designed on the baffle 23, and a corresponding buckle slot is designed on the outer barrel 2. When the baffle 23 is closed, the buckle is buckled into the buckle slot to achieve locking. This way is simple to operate and low in cost. 2. Knob type lock: similar to the knob of a bottle cap, a knob is designed on the baffle 23, and a corresponding threaded structure is designed on the outer barrel 2. Rotating the knob can lock the baffle 23 and the outer barrel 2. This way is stronger and more stable. 3. Latch type lock: similar to a door latch, a latch is designed on the baffle 23, and a corresponding insertion hole is designed on the outer barrel 2. When the baffle 23 is closed, the latch is inserted into the insertion hole to achieve locking. This way is simple in structure and high in reliability. 4. Magnetic type lock: magnets are respectively installed on the baffle 23 and the outer barrel 2, and the two are fixedly attached by magnetic force. This way does not require mechanical connection and is more convenient to operate, but the strength and stability of the magnetic force need to be considered. 5. Zipper type lock: similar to the zipper of a safety belt, a zipper is designed on the baffle 23, and a corresponding buckle ring is designed on the outer barrel 2. When the baffle 23 is closed, the zipper is buckled into the buckle ring to achieve locking. This way is firm and easy to operate. The above is only some examples, and appropriate lock forms can be selected according to specific needs in actual application, and are not limited to the above several.

[0030] In order to avoid hard contact between the mixing barrel 4 and the baffle 23, a buffer pad 25 is arranged on the inner side of the baffle 23, which can effectively absorb the impact and protect the mixing barrel 4.

[0031] In order to further improve the stability and efficiency of rotation, a support frame 5 is arranged below the overhanging end of the outer barrel 2, and at least two support rollers 51 abutting against the outer wall of the outer barrel 2 are rotationally connected to the support frame 5. These support rollers 51 not only bear the overall weight of the outer barrel 2 and the mixing barrel 4, but also reduce the rotation friction, making the rotation of the outer barrel 2 more smooth. Preferably, the support rollers 51 adopt elastic rubber wheels, which can not only improve the supporting force and reduce wear, but also effectively reduce noise, making the equipment more suitable for use in office and other noise-sensitive environments.

[0032] In addition, in order to enhance the structural strength of the outer barrel 2, a plurality of rib plates 26 are arranged on the side wall of the outer barrel 2.

[0033] The mixed powder barrel 4 is preferably manufactured by using a 3D printing integral molding technology, has a compact structure, and has a high matching degree with the outer barrel 2, and is convenient for a user to take and place. In order to facilitate the user to carry the mixed powder barrel 4, a plurality of handles 42 are designed on the mixed powder barrel 4.

[0034] In actual use, the operator only needs to slide the mixed powder barrel 4 containing powder into the outer barrel 2 along the guide groove 22, close the baffle 23 and lock the lock buckle 24, start the driving device 3 to make the outer barrel 2 rotate, and then the powder mixing can be carried out. Due to the double-barrel cooperation design of the outer barrel 2 and the mixed powder barrel 4 and the efficient rolling mixing mode, the powder mixing uniformity is high, the efficiency is high, and the whole operation process is simple and easy to operate, and can be completed by a single person.

Claims

1. A rolling powder mixing structure, characterized in that: Includes a support (1), on which an outer barrel (2) is rotatably connected. A drive device (3) for driving the outer barrel (2) to rotate is provided between the outer barrel (2) and the support (1). One end of the outer barrel (2) is provided with an opening (21). A mixing bucket (4) that can be put into and pulled out from the opening (21) is provided inside the outer barrel (2). A locking structure for locking the mixing bucket (4) inside the outer barrel (2) is provided between the outer barrel (2) and the mixing bucket (4).

2. The rolling powder mixing structure according to claim 1, characterized in that: The locking structure includes a circumferential limiting structure for restricting the circumferential rotation of the mixing bucket (4) and an axial limiting structure for restricting the inward and outward movement of the mixing bucket (4).

3. The rolling powder mixing structure according to claim 2, characterized in that: The circumferential limiting structure includes several axial guide grooves (22) evenly arranged on the inner wall of the outer barrel (2) and several guide rail structures (41) arranged on the outer wall of the mixing barrel (4). The guide rail structures (41) are inserted into the corresponding guide grooves (22) and cooperate with each other to guide the inner and outer pulling of the mixing barrel (4) and limit its circumferential movement.

4. The rolling powder mixing structure according to claim 3, characterized in that: The mixing bucket (4) is non-circular, and the guide rail structure (41) is formed by the chamfering of the side of the mixing bucket (4).

5. The rolling powder mixing structure according to claim 2, characterized in that: The axial limiting structure includes a baffle (23) rotatably connected to one side of the opening (21), and the free end of the baffle (23) is provided with a latch (24) for detachable connection with the other side of the opening (21).

6. The rolling powder mixing structure according to claim 5, characterized in that: The inner side of the baffle (23) is provided with a buffer pad (25) that can abut against the outer end face of the mixing bucket (4).

7. The rolling powder mixing structure according to claim 1, characterized in that: One end of the outer barrel (2) is a suspended end, and a support frame (5) is provided below the suspended end. At least two support rollers (51) that abut against the outer wall of the outer barrel (2) are rotatably connected to the support frame (5).

8. The rolling powder mixing structure according to claim 7, characterized in that: The support roller (51) is an elastic rubber roller.

9. The rolling powder mixing structure according to claim 1, characterized in that: The outer barrel (2) has several ribs (26) on its side wall.

10. The rolling powder mixing structure according to claim 1, characterized in that: The mixing bucket (4) is equipped with several handles (42).

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