Composite material stirring device of building 3D printer

Abstract

The utility model relates to building 3D printing technical field, concretely relates to composite material stirring device of building 3D printer, include: stirring drum, the side of stirring drum top end evenly is equipped with several feed ports, the top of feed port is provided with automatic batching device, the other side of stirring drum top end is equipped with observation port, the top of observation port is provided with the apron, the middle part of stirring drum is equipped with heating cavity, and the inside of heating cavity is around the heating pipe, is equipped with spiral flow guide plate on the inner wall of stirring drum, and spiral flow guide plate helical extension from the bottom of stirring drum to top, the inside of stirring drum is provided with stirring mechanism, breaks the limitation of traditional single direction stirring through the synergistic effect between spiral flow guide plate and stirring mechanism, and spiral flow guide plate guides the composite motion of the spiral ascending of material in the bucket, avoids material accumulation to improve the uniformity of mixing and stirring efficiency, effectively guarantees the forming quality of building 3D printing material.

Description

Technical Field

[0001] This utility model relates to the field of architectural 3D printing technology, specifically to a composite material mixing device for architectural 3D printers. Background Technology

[0002] 3D printing of buildings is a technology that uses a computer-controlled printer to deposit building materials (usually special concrete, polymers or metals) layer by layer to automatically build a building structure or the entire building.

[0003] With the rapid development of 3D printing technology for buildings, higher requirements have been placed on the mixing uniformity and stirring efficiency of printing materials. In 3D printing of buildings, it is necessary to fully mix a variety of materials with different properties to ensure that the printed building structure has good performance.

[0004] Currently, traditional material mixing devices for architectural 3D printers have some obvious shortcomings. For example, most mixing devices can only mix in one direction, which makes it easy for materials to accumulate during the mixing process, making it difficult to achieve uniform mixing and greatly affecting the mixing quality. Moreover, the mixing speed of traditional mixing devices is slow, and it takes a lot of time to complete one mixing cycle, which not only reduces production efficiency but also increases production costs. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a composite material mixing device for architectural 3D printers, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a composite material mixing device for a building 3D printer, comprising: a mixing tank, a plurality of feed inlets evenly distributed on one side of the top of the mixing tank, an automatic feeding device provided at the top of the feed inlets, an observation port provided on the other side of the top of the mixing tank, a cover plate provided at the top of the observation port, a discharge port provided on one side of the bottom of the mixing tank, a heating chamber provided in the middle of the mixing tank, a heating tube wound inside the heating chamber, a spiral guide plate provided on the inner wall of the mixing tank, the spiral guide plate extending spirally from the bottom to the top of the mixing tank, and a mixing mechanism provided inside the mixing tank.

[0007] Furthermore, the automatic batching device includes a raw material storage tank, the top of which is threaded with a sealing cap.

[0008] Furthermore, a feeding pipe is fixedly connected to the bottom of the raw material storage tank, the outlet end of the feeding pipe is fixedly connected to the inlet, and a flow metering valve is fixedly connected to one side of the feeding pipe.

[0009] Furthermore, a discharge pipe is fixedly connected to one side of the discharge port, and a control valve is fixedly connected to the top of the discharge pipe.

[0010] Furthermore, the stirring mechanism includes a drive motor, and the output end of the drive motor is connected to a stirring shaft via a spline.

[0011] Furthermore, several stirring rods are uniformly fixedly connected to the surface of the stirring shaft, and a stirring paddle is fixedly connected to the other end of the stirring rod. Stirring teeth are provided on both sides of the stirring paddle.

[0012] Furthermore, the cover plate is hinged to the mixing tank via a hinge, an observation window is fixedly connected to the middle of the cover plate, and a handle is fixedly connected to the side of the cover plate away from the hinge.

[0013] Furthermore, several support legs are evenly and fixedly connected to the bottom of the mixing tank, and shock-absorbing rubber pads are fixedly connected to the bottom of the support legs.

[0014] The technical solution provided by this utility model has the following advantages compared with the known prior art: 1. Through the design of the spiral guide plate and the stirring mechanism, the spiral guide plate and the stirring mechanism work together during use, breaking the limitations of traditional unidirectional stirring. The spiral guide plate guides the material to generate a spiral upward composite motion in the barrel, avoiding material accumulation and allowing the material to be fully sheared, convection, and diffused in three-dimensional space, thereby improving the uniformity of mixing and stirring efficiency, and effectively ensuring the molding quality of 3D printing materials for buildings; 2. With the automatic batching device, each raw material storage tank is connected to the mixing tank through a feeding pipe during use, and the feeding amount of each material is precisely controlled by the flow metering valve. This not only realizes the automatic proportioning of multiple materials, reduces human error, and ensures the accuracy of the formula, but also improves the automation level and continuity of the entire production process. 3. With the heating tube, the material being stirred can be heated during use, which is suitable for composite materials with specific temperature requirements. It can effectively reduce the viscosity of the material, promote mixing, prevent the material from solidifying prematurely or maintain its optimal printing performance, and improve the equipment's adaptability to complex materials. 4. The design of the observation port and the cover with the observation window facilitates real-time monitoring of the mixing and material status inside the tank; the shock-absorbing rubber pads at the bottom of the support legs effectively reduce vibration and noise during operation; the control valve on the discharge pipe facilitates the control of the discharge; the overall structure is reasonably laid out, highly automated, easy to operate, and easy to maintain. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the mixing tank of this utility model; Figure 3 This is a schematic diagram of the automatic batching device of this utility model; Figure 4 This is a schematic diagram of the stirring mechanism of this utility model; Figure 5 This is a schematic diagram of the cover plate structure of this utility model.

[0017] The labels in the diagram represent: 1. Mixing tank; 101. Feed inlet; 102. Discharge outlet; 103. Observation port; 104. Heating chamber; 2. Heating tube; 3. Spiral guide plate; 4. Automatic batching device; 401. Raw material storage tank; 402. Sealing cover; 403. Feeding pipe; 404. Flow metering valve; 5. Discharge pipe; 501. Control valve; 6. Mixing mechanism; 601. Drive motor; 602. Mixing shaft; 603. Mixing rod; 604. Mixing paddle; 7. Cover plate; 701. Hinge; 702. Observation window; 703. Handle; 8. Support leg; 801. Shock-absorbing rubber pad. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] The present invention will be further described below with reference to the embodiments. Example 1:

[0020] Reference Figure 1-5This first embodiment of the present invention discloses a composite material mixing device for a building 3D printer, comprising: a mixing tank 1, a plurality of feed inlets 101 evenly distributed on one side of the top of the mixing tank 1, an automatic dispensing device 4 provided at the top of the feed inlets 101, an observation port 103 provided on the other side of the top of the mixing tank 1, a cover plate 7 provided at the top of the observation port 103, a discharge port 102 provided on one side of the bottom of the mixing tank 1, a heating chamber 104 provided in the middle of the mixing tank 1, a heating tube 2 wound inside the heating chamber 104, a spiral guide plate 3 provided on the inner wall of the mixing tank 1, the spiral guide plate 3 spirally extending from the bottom to the top of the mixing tank 1, and a mixing mechanism 6 provided inside the mixing tank 1.

[0021] With the spiral guide plate 3 and the stirring mechanism 6 in place, the spiral guide plate 3 and the stirring mechanism 6 work together during use, breaking the limitations of traditional unidirectional stirring. The spiral guide plate 3 guides the material to generate a spiral upward composite motion in the barrel, avoiding material accumulation and allowing the material to be fully sheared, convection and diffused in three-dimensional space, thereby improving the uniformity of mixing and stirring efficiency, and effectively ensuring the molding quality of building 3D printing materials. With the heating pipe 2 in place, the material being stirred can be heated during use, which is suitable for composite materials with specific temperature requirements. It can effectively reduce the viscosity of the material, promote mixing, prevent the material from solidifying prematurely or maintain its optimal printing performance, and improve the equipment's adaptability to complex materials. Example 2:

[0022] Reference Figure 1-5 This is the second embodiment of the present invention, which differs from the first embodiment in that: The automatic batching device 4 includes a raw material storage tank 401. A sealing cap 402 is threadedly connected to the top of the raw material storage tank 401. A feeding pipe 403 is fixedly connected to the bottom of the raw material storage tank 401. The discharge end of the feeding pipe 403 is fixedly connected to the inlet 101. A flow metering valve 404 is fixedly connected to one side of the feeding pipe 403. A discharge pipe 5 is fixedly connected to one side of the discharge outlet 102. A control valve 501 is fixedly connected to the top of the discharge pipe 5.

[0023] The stirring mechanism 6 includes a drive motor 601. The output end of the drive motor 601 is connected to a stirring shaft 602 via a spline. Several stirring rods 603 are uniformly fixedly connected to the surface of the stirring shaft 602. A stirring paddle 604 is fixedly connected to the other end of the stirring rod 603. Stirring teeth are provided on both sides of the stirring paddle 604. The cover plate 7 is hinged to the stirring tank 1 via a hinge 701. An observation window 702 is fixedly connected to the middle of the cover plate 7. A handle 703 is fixedly connected to the side of the cover plate 7 away from the hinge 701. Several support legs 8 are uniformly fixedly connected to the bottom of the stirring tank 1. A shock-absorbing rubber pad 801 is fixedly connected to the bottom of the support legs 8.

[0024] With the automatic batching device 4, each raw material storage tank 401 is connected to the mixing tank 1 via the feeding pipe 403 during use, and the feeding amount of each material is precisely controlled by the flow metering valve 404. This not only realizes the automated proportional mixing of multiple materials, reducing human error and ensuring the accuracy of the formula, but also improves the automation level and continuity of the entire production process. The design of the observation port 103 and the cover plate 7 with the observation window 702 facilitates real-time monitoring of the mixing situation and material status inside the tank. The shock-absorbing rubber pad 801 at the bottom of the support leg 8 can effectively reduce vibration and noise during operation. The control valve 501 on the discharge pipe 5 facilitates the control of the discharge. The overall structure is reasonably laid out, highly automated, easy to operate, and easy to maintain.

[0025] The remaining structure is the same as that in Example 1.

[0026] The workflow of this utility model is as follows: First, the operator unscrews the sealing caps 402 at the top of each raw material storage tank 401 in the automatic batching device 4, and adds the different raw materials required for building 3D printing (such as cement, aggregates, additives, etc.) into the corresponding raw material storage tanks 401. Then, the sealing caps 402 are tightened to prevent moisture and dust. Then, the equipment is started, and the automatic batching device 4 begins to work. The flow metering valves 404 at the bottom of each raw material storage tank 401 precisely control the output amount according to the preset formula. The raw materials are quantitatively transported to each feed port 101 at the top of the mixing tank 1 through the feeding pipe 403. Through the setting of the automatic batching device 4, each raw material storage tank 401 is connected to the mixing tank 1 through the feeding pipe 403 during use, and the flow metering valves 404 precisely control the feeding amount of each material. This not only realizes the automated proportional mixing of multiple materials, reduces human error, and ensures the accuracy of the formula, but also improves the automation level and continuity of the entire production process. Secondly, if the material has temperature requirements, the heating tube 2 connected to the heating chamber 104 can be activated to preheat the mixing tank 1 or to heat the material at a constant temperature during the mixing process. At the same time, the stirring mechanism 6 is activated, and the driving motor 601 is turned on. The stirring shaft 602 drives the stirring rod 603 and stirring paddle 604 on it to rotate at high speed, which performs strong shearing and mixing on the material in the tank. Driven by the stirring paddle 604 and guided by the spiral guide plate 3 on the inner wall of the tank, the material forms a spiral upward composite motion in the tank, is lifted from the bottom to the top and then falls back down, realizing full convection and diffusion in three-dimensional space, effectively avoiding dead corners and accumulation, and greatly improving the mixing uniformity and efficiency. Finally, during the mixing process, the operator can open the hinged cover 7 at any time by lifting the handle 703, or directly observe the mixing state and liquid level of the material inside the mixing tank 1 through the observation window 702, to ensure that the production process is visible and controllable. When the material mixing reaches the preset uniformity requirements and time, the mixing mechanism 6 and the heating tube 2 are stopped, and then the control valve 501 on the discharge pipe 5 is opened. The uniformly mixed material is discharged from the discharge port 102 through the discharge pipe 5 under the action of gravity.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A composite material mixing device for a building 3D printer, characterized in that, include: A mixing tank (1) has several feed inlets (101) evenly distributed on one side of the top of the mixing tank (1). An automatic feeding device (4) is provided at the top of the feed inlets (101). An observation port (103) is provided on the other side of the top of the mixing tank (1). A cover plate (7) is provided at the top of the observation port (103). A discharge port (102) is provided on one side of the bottom of the mixing tank (1). A heating chamber (104) is provided in the middle of the mixing tank (1). A heating tube (2) is wound around the inside of the heating chamber (104). A spiral guide plate (3) is provided on the inner wall of the mixing tank (1). The spiral guide plate (3) extends spirally from the bottom of the mixing tank (1) to the top. A stirring mechanism (6) is provided inside the mixing tank (1).

2. The composite material mixing device for a building 3D printer according to claim 1, characterized in that, The automatic batching device (4) includes a raw material storage tank (401), and a sealing cap (402) is threadedly connected to the top of the raw material storage tank (401).

3. The composite material mixing device for a building 3D printer according to claim 2, characterized in that, The bottom end of the raw material storage tank (401) is fixedly connected to a feeding pipe (403), the discharge end of the feeding pipe (403) is fixedly connected to the inlet (101), and a flow metering valve (404) is fixedly connected to one side of the feeding pipe (403).

4. The composite material mixing device for a building 3D printer according to claim 1, characterized in that, A discharge pipe (5) is fixedly connected to one side of the discharge port (102), and a control valve (501) is fixedly connected to the top of the discharge pipe (5).

5. The composite material mixing device for a building 3D printer according to claim 1, characterized in that, The stirring mechanism (6) includes a drive motor (601), and the output end of the drive motor (601) is connected to a stirring shaft (602) via a spline.

6. The composite material mixing device for a building 3D printer according to claim 5, characterized in that, A plurality of stirring rods (603) are uniformly fixedly connected to the surface of the stirring shaft (602), and a stirring paddle (604) is fixedly connected to the other end of the stirring rod (603). Stirring teeth are provided on both sides of the stirring paddle (604).

7. The composite material mixing device for a building 3D printer according to claim 1, characterized in that, The cover plate (7) is hinged to the mixing tank (1) via a hinge (701). An observation window (702) is fixedly connected to the middle of the cover plate (7), and a handle (703) is fixedly connected to the side of the cover plate (7) away from the hinge (701).

8. The composite material mixing device for a building 3D printer according to claim 1, characterized in that, The bottom of the mixing tank (1) is uniformly and fixedly connected with several support legs (8), and the bottom of the support legs (8) is fixedly connected with shock-absorbing rubber pads (801).

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