3D printing device for aluminum-based composite material and application method

Abstract

The invention relates to the technical field of 3D printing, in particular to a 3D printing device for an aluminum-based composite material and an application method. The device comprises a first feeding assembly, a second feeding assembly, a first heating component, a second heating component, a premixing assembly and a 3D printing nozzle. The first feeding assembly and the second feeding assembly are connected with the 3D printing nozzle through the premixing assembly. The first feeding assembly comprises a first storage tank used for storing powder metal, and the first heating component is arranged on the first storage tank and used for heating the first storage tank. The second feeding assembly comprises a second storage tank used for storing liquid metal, and the second heating component is arranged on the second storage tank and used for heating the second storage tank. According to the method, the 3D printing material spraying operation is completed by adopting the device. The problem that powder metal is easily affected with damp and adheres to the inner wall of the storage tank, and consequently a conveying pipeline is blocked is solved, the feeding effect can be improved, and feeding and spraying are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a 3D printing device and an application method for aluminum-based composite materials. Background Art

[0002] 3D printing technology, also known as additive manufacturing technology, is a technology that manufactures physical parts by accumulating materials layer by layer based on three-dimensional CAD data. When using existing 3D printing devices for aluminum-based composite materials, liquid metal and powdered metal are usually stored separately in storage tanks, and then the liquid metal and powdered metal are input into the 3D printing nozzle, and sprayed out through the 3D printing nozzle to complete the 3D printing of aluminum-based composite materials. However, the 3D printing device has obvious deficiencies in the storage of powdered metal: there is a lack of effective heating measures in the storage tank, and the powdered metal is easily damp and adheres to the inner wall of the storage tank, which will not only cause blockage of the conveying pipeline and hinder the smooth output of powdered metal, but also further affect the normal operation of the entire device.

[0003] In summary, it is necessary to provide a 3D printing device and application method for aluminum-based composite materials to solve the problem in the prior art that powdered metal is easily affected by moisture and adheres to the inner wall of the storage tank, causing blockage of the conveying pipeline. Summary of the invention

[0004] The purpose of the present invention is to provide a 3D printing device and application method for aluminum-based composite materials. The specific technical scheme is as follows:

[0005] In a first aspect, the present invention provides a 3D printing device for aluminum-based composite materials, comprising a first feed assembly, a second feed assembly, a first heating component, a second heating component, a premixing assembly and a 3D printing nozzle; the first feed assembly and the second feed assembly are connected to the 3D printing nozzle via the premixing assembly; the first feed assembly comprises a first storage tank for storing powdered metal, and the first heating component is arranged on the first storage tank for heating the first storage tank; the second feed assembly comprises a second storage tank for storing liquid metal, and the second heating component is arranged on the second storage tank for heating the second storage tank.

[0006] Optionally, a first cavity is opened on the wall of the first storage tank, and the first heating component is connected to the first cavity through a first heat-conducting pipe; the number of the first heat-conducting pipes is at least two;

[0007] A second cavity is opened on the wall of the second storage tank, and the second heating component is connected with the second cavity through a second heat-conducting pipe; the number of the second heat-conducting pipes is at least two.

[0008] Optionally, a first tank cover is provided on the top of the first storage tank in an openable and closable manner; the first feeding assembly further comprises a first feeding driving member; the first feeding driving member comprises a feeding driving member, a rotating rod and a spiral blade; the feeding driving member is provided on the first tank cover, and an output end thereof penetrates the first tank cover and is connected to the rotating rod provided in the first storage tank; the spiral blade is provided in the first storage tank and is connected to the rotating rod;

[0009] A second tank cover is opened and closed on the top of the second storage tank; the second feed assembly also includes a second feed drive component; the second feed drive component includes a boost pump and a boost pipe; the boost pump is arranged on the second tank cover, and its outlet is connected to one end of the boost pipe; the other end of the boost pipe passes through the second tank cover and is arranged inside the second storage tank.

[0010] Optionally, a plurality of first arc-shaped plates are annularly spaced apart on the first tank cover, and each of the first arc-shaped plates is extended into the first storage tank and is slidably fitted with the inner wall of the first storage tank;

[0011] A plurality of second arc-shaped plates are arranged circumferentially and spaced apart on the second tank cover, and each of the second arc-shaped plates is extended into the second storage tank and is slidably fitted with the inner wall of the second storage tank.

[0012] Optionally, the first feeding assembly further comprises a first soft material guiding tube; one end of the first soft material guiding tube is connected to the bottom of the first storage tank, and the other end is connected to the 3D printing nozzle via the premixing assembly; a first valve is provided on the first soft material guiding tube;

[0013] The second feed assembly further includes a second soft material guide tube; one end of the second soft material guide tube is connected to the bottom of the second storage tank, and the other end is connected to the 3D printing nozzle via the premixing assembly; a second valve is provided on the second soft material guide tube;

[0014] The inner wall surface of the bottom of the first storage tank is an inverted cone-shaped wall surface; the inner wall surface of the bottom of the second storage tank is an inverted cone-shaped wall surface.

[0015] Optionally, the premixing assembly includes a premixing chamber and a connecting pipe; one side of the premixing chamber is connected to the 3D printing nozzle through the connecting pipe, and the other side is connected to the first soft material guide pipe and the second soft material guide pipe respectively.

[0016] Optionally, the 3D printing device further includes a lifting assembly; the lifting assembly includes a lifting drive, a screw, a threaded sleeve, a first connecting rod and a second connecting rod; the output end of the lifting drive is connected to the screw; the threaded sleeve is arranged on the screw, and the two are threadedly adapted; one side of the threaded sleeve is connected to the first storage tank through the first connecting rod, and the other side of the threaded sleeve is connected to the second storage tank through the second connecting rod;

[0017] The lifting assembly also includes a protective shell; the protective shell is coaxially arranged on the outside of the screw; the lifting drive is arranged in the protective shell; a first guide slot is arranged on one side of the protective shell to provide a guide for the lifting movement of the first connecting rod, and a second guide slot is arranged on the other side of the protective shell to provide a guide for the lifting movement of the second connecting rod.

[0018] Optionally, the lifting assembly further comprises a first guide upright rod and a second guide upright rod; the first guide upright rod is arranged on a side of the first storage tank away from the protective shell, and the first storage tank is slidably connected to the first guide upright rod via a first sliding sleeve; the second guide upright rod is arranged on a side of the second storage tank away from the protective shell, and the second storage tank is slidably connected to the second guide upright rod via a second sliding sleeve; a first limit block is arranged on the top end of the first guide upright rod; a second limit block is arranged on the top end of the second guide upright rod;

[0019] The first heating component is connected to the first storage tank via the first sliding sleeve; the second heating component is connected to the second storage tank via the second sliding sleeve.

[0020] Optionally, the 3D printing device further includes a first buoy assembly and a second buoy assembly; the first buoy assembly includes a first movable rod and a first floating plate; a first through hole having a diameter larger than a diameter of the first movable rod is provided on the first tank cover, one end of the first movable rod is provided in the first storage tank through the first through hole and connected to the first floating plate, and the other end is provided outside the first storage tank and connected to the first anti-slip block;

[0021] The second buoy assembly includes a second movable rod and a second floating plate; a second through hole with a diameter larger than that of the second movable rod is provided on the second tank cover; one end of the second movable rod is provided in the second storage tank through the second through hole and connected to the second floating plate, while the other end is provided outside the second storage tank and connected to the second anti-slip block;

[0022] The first storage tank and the second storage tank are both transparent storage tanks.

[0023] In a second aspect, the present invention provides an application method using the 3D printing device, comprising:

[0024] Step S1: Adding materials and heating

[0025] The lifting drive member is used to drive the screw rod to drive the threaded sleeve to descend from the 3D printing spraying position to the feeding position, wherein the threaded sleeve is respectively linked to the first connecting rod and the second connecting rod to realize the first storage tank and the second storage tank descending to the feeding position; the first tank cover is lifted, and powder metal is added into the first storage tank, and after it is full, the first tank cover is closed; the second tank cover is lifted, and liquid metal is added into the second storage tank, and after it is full, the second tank cover is closed;

[0026] Before adding materials, the first heating component and the second heating component are used to heat the first cavity and the second cavity respectively to achieve a preheating function; after adding materials, the first heating component continues to heat the first cavity to heat the powdered metal in the first storage tank; the second heating component continues to heat the second cavity to heat the liquid metal in the second storage tank;

[0027] Step S2: Reset

[0028] The lifting drive member drives the screw rod to drive the threaded sleeve to rise and reset from the feeding position to the 3D printing spraying position, wherein the threaded sleeve respectively links the first connecting rod and the second connecting rod to realize the first storage tank and the second storage tank to rise and reset to the 3D printing spraying position;

[0029] Step S3: Complete 3D printing spraying

[0030] Opening the first valve on the first soft material guide pipe, using the feed drive to drive the rotating rod to drive the spiral blade to rotate and push the powder metal through the first soft material guide pipe into the premixing component;

[0031] Opening the second valve on the second soft material guide pipe, using the booster pump to increase pressure in the second storage tank through the booster pipe, so as to force the liquid metal to flow into the premixing assembly through the second soft material guide pipe;

[0032] Mixing powdered metal and liquid metal in the premixing assembly and then spraying them out through the 3D printing nozzle to complete 3D printing spraying;

[0033] During the 3D printing spraying process, by observing the height positions of the first buoy assembly and the second buoy assembly or directly observing the remaining powdered metal in the transparent first storage tank and the remaining liquid metal in the second storage tank, it is directly determined whether feeding is needed; if feeding is needed, repeat steps S1-S2.

[0034] The application of the technical solution of the present invention has at least the following beneficial effects:

[0035] (1) The present invention provides a 3D printing device for aluminum-based composite materials, which uses a first heating component to heat the powder metal in the first storage tank, solving the problem in the prior art that the powder metal is easily damp and adheres to the inner wall of the storage tank, causing the conveying pipeline to be blocked. The present invention uses a second heating component to heat the liquid metal in the second storage tank, thereby improving the fluidity of the liquid metal and the feeding effect. The present invention uses a premixing component to facilitate mixing the powder metal and the liquid metal before spraying them out through the 3D printing nozzle, thereby improving the quality of 3D printing.

[0036] (2) The present invention provides a 3D printing device for aluminum-based composite materials. The air heated in the first heating component is transported to the first cavity through one of the first heat-conducting pipes, and the unheated air in the first cavity is squeezed into another first heat-conducting pipe and transported to the first heating component, and heated by the first heating component; the first heating component is used to heat all the air in the first cavity, thereby completing the heating of the first storage tank and achieving the heating of the powdered metal in the first storage tank. The air heated in the second heating component is transported to the second cavity through one of the second heat-conducting pipes, and the unheated air in the second cavity is squeezed into another second heat-conducting pipe and transported to the second heating component, and heated by the second heating component; the second heating component is used to heat all the air in the second cavity, thereby completing the heating of the second storage tank and achieving the heating of the liquid metal in the second storage tank.

[0037] (3) The present invention provides a 3D printing device for aluminum-based composite materials, which also uses a first feed drive component in combination with a first storage tank, which can accelerate the feeding effect of powdered metal and ensure that the feed is continuously provided to the 3D printing nozzle; and uses a second feed drive component in combination with a second storage tank, which can accelerate the feeding effect of liquid metal and ensure that the feed is continuously provided to the 3D printing nozzle.

[0038] (4) The present invention provides a 3D printing device for aluminum-based composite materials. The lifting assembly can be used to adjust the first storage tank and the second storage tank to descend to a feeding position to facilitate feeding. The lifting assembly can also be used to adjust the first storage tank and the second storage tank to rise to a 3D printing spraying position to facilitate spraying.

[0039] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0041] Figure 1 is a schematic structural diagram of a 3D printing device for aluminum-based composite materials in an embodiment;

[0042] Figure 2 is a structural schematic diagram of a 3D printing device for aluminum-based composite materials in an embodiment from another perspective;

[0043] Figure 3 is a cross-sectional view of a partial area of ​​a 3D printing device for an aluminum-based composite material in an embodiment;

[0044] Figure 4 is a structural schematic diagram of the first feeding assembly, the first heating component and the first guide rod assembly in the embodiment;

[0045] Figure 5 is a structural schematic diagram of the second feeding assembly, the second heating component and the second guide rod assembly in the embodiment;

[0046] Among them, 1. bottom plate, 2. first feeding assembly, 2.1. first storage tank, 2.1.1. first cavity, 2.1.2. first tank cover, 2.1.3. first arc plate, 2.2. feeding drive member, 2.3. rotating rod, 2.4. spiral blade, 2.5. first soft material guide tube, 3. second feeding assembly, 3.1. second storage tank, 3.1.1. second cavity, 3.1.2. second tank cover, 3.1.3. second arc plate, 3.2. Booster pump, 3.3, booster pipe, 3.4, second soft material guide pipe, 4, first heating component, 4.1, first heat conduction pipe, 5, second heating component, 5.1, second heat conduction pipe, 6, premixing assembly, 6.1, premixing chamber, 6.2, connecting pipe, 7, 3D printing nozzle, 8, lifting assembly, 8.1, lifting drive member, 8.2, screw, 8.3, threaded sleeve, 8.4, protective shell, 8.5, first guide rod, 8.6, second guide rod. DETAILED DESCRIPTION

[0047] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0048] Example:

[0049] See also Figure 1-Figure 5 A 3D printing device for aluminum-based composite materials, comprising a base plate 1 and a first feeding assembly 2, a second feeding assembly 3, a first heating component 4 (specifically an electric heat generator), a second heating component 5 (specifically an electric heat generator), a premixing assembly 6 and a 3D printing nozzle 7 arranged on the base plate 1; the first feeding assembly 2 and the second feeding assembly 3 are connected to the 3D printing nozzle 7 via the premixing assembly 6; the premixing assembly 6 is used to facilitate mixing powdered metal and liquid metal and then spraying them through the 3D printing nozzle 7, thereby improving the 3D printing quality; the first feeding assembly 2 includes a first storage tank 2.1 for storing powdered metal, the first A heating component 4 is arranged on the first storage tank 2.1, and is used to heat the first storage tank 2.1; the first heating component 4 is used to heat the powdered metal in the first storage tank 2.1, which solves the problem in the prior art that the powdered metal is easily affected by moisture and adheres to the inner wall of the storage tank, causing blockage of the conveying pipeline; the second feeding assembly 3 includes a second storage tank 3.1 for storing liquid metal, and the second heating component 5 is arranged on the second storage tank 3.1, and is used to heat the second storage tank 3.1; the second heating component 5 is used to heat the liquid metal in the second storage tank 3.1, thereby improving the fluidity of the liquid metal and improving the feeding effect.

[0050] A first cavity 2.1.1 is opened on the wall of the first storage tank 2.1, and the first heating component 4 is connected to the first cavity 2.1.1 through a first heat-conducting pipe 4.1; there are two first heat-conducting pipes 4.1; the air heated in the first heating component 4 is transported to the first cavity 2.1.1 through one of the first heat-conducting pipes 4.1, and the unheated air in the first cavity 2.1.1 is squeezed into the other first heat-conducting pipe 4.1 and transported to the first heating component 4 to be heated by the first heating component 4; the cycle is repeated successively, and the first heating component 4 can heat all the air in the first cavity 2.1.1, thereby completing the heating of the first storage tank 2.1 and achieving the heating of the powdered metal in the first storage tank 2.1.

[0051] A second cavity 3.1.1 is opened on the wall of the second storage tank 3.1, and the second heating component 5 is connected to the second cavity 3.1.1 through a second heat-conducting pipe 5.1; there are two second heat-conducting pipes 5.1; the air heated in the second heating component 5 is transported to the second cavity 3.1.1 through one of the second heat-conducting pipes 5.1, and the unheated air in the second cavity 3.1.1 is squeezed into the other second heat-conducting pipe 5.1 and transported to the second heating component 5, and heated by the second heating component 5; the cycle is repeated successively, and the second heating component 5 can heat all the air in the second cavity 3.1.1, thereby completing the heating of the second storage tank 3.1 and realizing the heating of the liquid metal in the second storage tank 3.1.

[0052] A first tank cover 2.1.2 is provided on the top of the first storage tank 2.1 in an openable and closable manner; the first feed assembly 2 also includes a first feed drive member; the first feed drive member includes a feed drive 2.2 (specifically a motor), a rotating rod 2.3 and a spiral blade 2.4; the feed drive 2.2 is provided on the first tank cover 2.1.2, and its output end passes through the first tank cover 2.1.2 and is connected to the rotating rod 2.3 provided in the first storage tank 2.1; the spiral blade 2.4 is provided in the first storage tank 2.1 and is connected to the rotating rod 2.3; the first feed drive member is combined with the first storage tank 2.1 to accelerate the feeding effect of the powdered metal and ensure continuous feeding for the 3D printing nozzle 7;

[0053] A second tank cover 3.1.2 is openably provided on the top of the second storage tank 3.1; the second feeding assembly 3 also includes a second feeding driving member; the second feeding driving member includes a boosting pump 3.2 and a boosting pipe 3.3; the boosting pump 3.2 is provided on the second tank cover 3.1.2, and its outlet is connected to one end of the boosting pipe 3.3; the other end of the boosting pipe 3.3 passes through the second tank cover 3.1.2 and is provided inside the second storage tank 3.1; the second feeding driving member is combined with the second storage tank 3.1, which can accelerate the feeding effect of the liquid metal and ensure continuous supply of feed to the 3D printing nozzle 7.

[0054] A plurality of first curved plates 2.1.3 (such as two first curved plates 2.1.3) are arranged annularly and spaced apart on the first tank cover 2.1.2. Each of the first curved plates 2.1.3 extends into the first storage tank 2.1 and is slidably fitted with the inner wall of the first storage tank 2.1. This prevents the first tank cover 2.1.2 from being separated from the first storage tank 2.1. On the other hand, the interval between two adjacent first curved plates 2.1.3 facilitates material addition.

[0055] A plurality of second curved plates 3.1.3 (such as two second curved plates 3.1.3) are arranged at intervals in an annular direction on the second tank cover 3.1.2. Each of the second curved plates 3.1.3 extends into the second storage tank 3.1 and is slidably fitted with the inner wall of the second storage tank 3.1. This prevents the second tank cover 3.1.2 from being separated from the second storage tank 3.1 on the one hand, and the interval between two adjacent second curved plates 3.1.3 facilitates material addition on the other hand.

[0056] The first feeding assembly 2 further includes a first soft material guide tube (such as a plastic tube) 2.5; one end of the first soft material guide tube 2.5 is connected to the bottom of the first storage tank 2.1, and the other end is connected to the 3D printing nozzle 7 through the premixing assembly 6; a first valve is provided on the first soft material guide tube 2.5;

[0057] The second feeding assembly 3 further includes a second soft material guide tube (such as a plastic tube) 3.4; one end of the second soft material guide tube 3.4 is connected to the bottom of the second storage tank 3.1, and the other end is connected to the 3D printing nozzle 7 through the premixing assembly 6; a second valve is provided on the second soft material guide tube 3.4;

[0058] The bottom inner wall of the first storage tank 2.1 is an inverted cone-shaped wall, which is convenient for feeding into the first soft material guide tube 2.5; the bottom inner wall of the second storage tank 3.1 is an inverted cone-shaped wall, which is convenient for feeding into the second soft material guide tube 3.4.

[0059] The premixing assembly 6 includes a premixing chamber 6.1 and a connecting pipe 6.2; one side of the premixing chamber 6.1 is connected to the 3D printing nozzle 7 through the connecting pipe 6.2, and the other side is connected to the first soft material guide pipe 2.5 and the second soft material guide pipe 3.4 respectively.

[0060] See also Figure 1-Figure 3 The 3D printing device further comprises a lifting assembly 8 disposed on the base plate 1; the lifting assembly 8 comprises a lifting drive member 8.1 (specifically a motor), a screw rod 8.2, a threaded sleeve 8.3, a first connecting rod and a second connecting rod; the output end of the lifting drive member 8.1 is connected to the screw rod 8.2; the threaded sleeve 8.3 is disposed on the screw rod 8.2, and the two are threadedly adapted; one side of the threaded sleeve 8.3 is connected to the first storage tank 2.1 through the first connecting rod, and the other side of the threaded sleeve 8.3 is connected to the second storage tank 3.1 through the second connecting rod;

[0061] The lifting assembly 8 also includes a protective shell 8.4; the protective shell 8.4 is coaxially arranged on the outside of the screw 8.2; the lifting drive member 8.1 is arranged in the protective shell 8.4; a first guide groove is arranged on one side of the protective shell 8.4 to provide a guide for the lifting movement of the first connecting rod, and a second guide groove is arranged on the other side of the protective shell 8.4 to provide a guide for the lifting movement of the second connecting rod.

[0062] The lifting assembly 8 also includes a first guide rod 8.5 and a second guide rod 8.6; the first guide rod 8.5 is arranged on a side of the first storage tank 2.1 away from the protective shell 8.4, and there are two of them. The first storage tank 2.1 is slidably connected to the first guide rod 8.5 through a first sliding sleeve; the second guide rod 8.6 is arranged on a side of the second storage tank 3.1 away from the protective shell 8.4, and there are two of them. The second storage tank 3.1 is slidably connected to the second guide rod 8.6 through a second sliding sleeve; a first limit block is arranged on the top end of the first guide rod 8.5 to prevent the first sliding sleeve from sliding out of the first guide rod 8.5; a second limit block is arranged on the top end of the second guide rod 8.6 to prevent the second sliding sleeve from sliding out of the second guide rod 8.6; the combination of the first guide rod 8.5 and the second guide rod 8.6 is convenient for providing a guiding effect when the lifting drive 8.1 drives the first storage tank 2.1 and the second storage tank 3.1 to lift and lower.

[0063] The first heating component 4 is connected to the first storage tank 2.1 through the first sliding sleeve; the second heating component 5 is connected to the second storage tank 3.1 through the second sliding sleeve.

[0064] See also Figure 4-Figure 5 The 3D printing device further includes a first buoy assembly and a second buoy assembly; the first buoy assembly includes a first movable rod and a first floating plate; a first through hole with a diameter larger than the diameter of the first movable rod is provided on the first tank cover 2.1.2, one end of the first movable rod is provided in the first storage tank 2.1 through the first through hole and connected to the first floating plate, while the other end is provided outside the first storage tank 2.1 and connected to the first anti-dropping block to prevent the first movable rod from sinking into the first storage tank 2.1;

[0065] The second buoy assembly includes a second movable rod and a second floating plate; a second through hole with a diameter larger than the diameter of the second movable rod is provided on the second tank cover 3.1.2, one end of the second movable rod is provided in the second storage tank 3.1 through the second through hole and connected to the second floating plate, while the other end is provided outside the second storage tank 3.1 and connected to the second anti-dropping block to prevent the second movable rod from sinking into the second storage tank 3.1;

[0066] The first storage tank 2.1 and the second storage tank 3.1 are both transparent storage tanks.

[0067] An application method using the 3D printing device comprises:

[0068] Step S1: Adding materials and heating

[0069] The lifting drive member 8.1 is used to drive the screw rod 8.2 to drive the threaded sleeve 8.3 to descend from the 3D printing spraying position to the feeding position, wherein the threaded sleeve 8.3 is respectively linked to the first connecting rod and the second connecting rod to realize the first storage tank 2.1 and the second storage tank 3.1 descending to the feeding position; the first tank cover 2.1.2 is lifted, and powder metal is added into the first storage tank 2.1. After it is full, the first tank cover 2.1.2 is closed; the second tank cover 3.1.2 is lifted, and liquid metal is added into the second storage tank 3.1. After it is full, the second tank cover 3.1.2 is closed;

[0070] Before adding materials, the first heating component 4 and the second heating component 5 are used to heat the first cavity 2.1.1 and the second cavity 3.1.1 respectively to realize the preheating function; after adding materials, the first heating component 4 continuously heats the first cavity 2.1.1 to heat the powdered metal in the first storage tank 2.1; the second heating component 5 continuously heats the second cavity 3.1.1 to heat the liquid metal in the second storage tank 3.1;

[0071] Step S2: Reset

[0072] The lifting drive member 8.1 drives the screw rod 8.2 to drive the threaded sleeve 8.3 to rise and reset from the feeding position to the 3D printing spraying position, wherein the threaded sleeve 8.3 respectively links the first connecting rod and the second connecting rod to realize the first storage tank 2.1 and the second storage tank 3.1 to rise and reset to the 3D printing spraying position;

[0073] Step S3: Complete 3D printing spraying

[0074] Open the first valve on the first soft material guide tube 2.5, use the feed drive 2.2 to drive the rotating rod 2.3 to drive the spiral blade 2.4 to rotate and push the powder metal through the first soft material guide tube 2.5 into the premixing assembly 6;

[0075] Open the second valve on the second soft material guide pipe 3.4, and use the booster pump 3.2 to increase the pressure in the second storage tank 3.1 through the booster pipe 3.3 to force the liquid metal to flow into the premixing assembly 6 through the second soft material guide pipe 3.4;

[0076] The powdered metal and the liquid metal are mixed in the premixing component 6 and then sprayed out through the 3D printing nozzle 7 to complete the 3D printing spraying;

[0077] During the 3D printing spraying process, by observing the height positions of the first buoy assembly and the second buoy assembly or directly observing the remaining powdered metal in the transparent first storage tank 2.1 and the remaining liquid metal in the second storage tank 3.1, it is directly determined whether feeding is needed; if feeding is needed, repeat steps S1-S2.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A 3D printing device for aluminum-based composite materials, characterized in that: The invention comprises a first feeding assembly (2), a second feeding assembly (3), a first heating component (4), a second heating component (5), a premixing assembly (6) and a 3D printing nozzle (7); the first feeding assembly (2) and the second feeding assembly (3) are connected to the 3D printing nozzle (7) via the premixing assembly (6); the first feeding assembly (2) comprises a first storage tank (2.1) for storing powdered metal, the first heating component (4) is arranged on the first storage tank (2.1) and is used to heat the first storage tank (2.1); the second feeding assembly (3) comprises a second storage tank (3.1) for storing liquid metal, the second heating component (5) is arranged on the second storage tank (3.1) and is used to heat the second storage tank (3.1).

2. The 3D printing device for aluminum-based composite materials according to claim 1, characterized in that: A first cavity ( 2.1.1), the first heating component (4) is connected to the first cavity (2.1.1) through a first heat-conducting pipe (4.1); the number of the first heat-conducting pipes (4.1) is at least two; A second cavity ( 3.1.1), the second heating component (5) is connected to the second cavity (3.1.1) via a second heat-conducting pipe (5.1); the number of the second heat-conducting pipe (5.1) is at least two.

3. The 3D printing device for aluminum-based composite materials according to claim 2 is characterized in that a first tank cover (2.1.2) is openably arranged on the top of the first storage tank (2.1); the first feeding assembly (2) also includes a first feeding drive member; the first feeding drive member includes a feeding drive member (2.2), a rotating rod (2.3) and a spiral blade (2.4); the feeding drive member (2.2) is arranged on the first tank cover (2.1.2), and its output end passes through the first tank cover (2.1.2) and is connected to the rotating rod (2.3) arranged in the first storage tank (2.1); the spiral blade (2.4) is arranged in the first storage tank (2.1) and is connected to the rotating rod (2.3); A second tank cover (3.1.2) is arranged on the top of the second storage tank (3.1) in an openable and closable manner; the second feeding assembly (3) further comprises a second feeding drive member; the second feeding drive member comprises a booster pump (3.2) and a booster pipe (3.3); the booster pump (3.2) is arranged on the second tank cover (3.1.2), and its outlet is connected to one end of the booster pipe (3.3); the other end of the booster pipe (3.3) passes through the second tank cover (3.1.2); 3.1.2), and is arranged inside the second storage tank (3.1).

4. The 3D printing device for aluminum-based composite materials according to claim 3, characterized in that: A plurality of first arc-shaped plates (2.1.3) are arranged at intervals in an annular direction on the first tank cover (2.1.2), and each of the first arc-shaped plates (2.1.3) is extended into the first storage tank (2.1) and is slidably fitted with the inner wall of the first storage tank (2.1); A plurality of second arc-shaped plates (3.1.3) are arranged circumferentially at intervals on the second tank cover (3.1.2); each of the second arc-shaped plates (3.1.3) extends into the second storage tank (3.1) and is slidably fitted to the inner wall of the second storage tank (3.1).

5. The 3D printing device for aluminum-based composite materials according to claim 4, characterized in that: The first feeding assembly (2) further comprises a first soft material guiding tube (2.5); one end of the first soft material guiding tube (2.5) is in communication with the bottom of the first storage tank (2.1), and the other end is connected to the 3D printing nozzle (7) via the premixing assembly (6); a first valve is arranged on the first soft material guiding tube (2.5); The second feeding assembly (3) further comprises a second soft material guiding pipe (3.4); one end of the second soft material guiding pipe (3.4) is in communication with the bottom of the second storage tank (3.1), and the other end is connected to the 3D printing nozzle (7) via the premixing assembly (6); a second valve is arranged on the second soft material guiding pipe (3.4); The inner wall surface of the bottom of the first storage tank (2.1) is an inverted conical wall surface; the inner wall surface of the bottom of the second storage tank (3.1) is an inverted conical wall surface.

6. The 3D printing device for aluminum-based composite materials according to claim 5, characterized in that: The premixing component (6) comprises a premixing chamber (6.1) and a connecting pipe (6.2); one side of the premixing chamber (6.1) is connected to the 3D printing nozzle (7) via the connecting pipe (6.2), while the other side is respectively connected to the first soft material guide pipe (2.5) and the second soft material guide pipe (3.4).

7. The 3D printing device for aluminum-based composite materials according to claim 6, characterized in that: It also comprises a lifting assembly (8); the lifting assembly (8) comprises a lifting drive member (8.1), a screw rod (8.2), a threaded sleeve (8.3), a first connecting rod and a second connecting rod; the output end of the lifting drive member (8.1) is connected to the screw rod (8.2); the threaded sleeve (8.3) is arranged on the screw rod (8.2), and the two are arranged in threaded adaptation; one side of the threaded sleeve (8.3) is connected to the first storage tank (2.1) through the first connecting rod, and the other side of the threaded sleeve (8.3) is connected to the second storage tank (3.1) through the second connecting rod; The lifting assembly (8) further comprises a protective shell (8.4); the protective shell (8.4) is coaxially arranged on the outer side of the screw rod (8.2); the lifting drive member (8.1) is arranged in the protective shell (8.4); a first guide slot for providing a guide for the lifting movement of the first connecting rod is arranged on one side of the protective shell (8.4), and a second guide slot for providing a guide for the lifting movement of the second connecting rod is arranged on the other side of the protective shell (8.4).

8. The 3D printing device for aluminum-based composite materials according to claim 7, characterized in that: The lifting assembly (8) further comprises a first guide rod (8.5) and a second guide rod (8.6); the first guide rod (8.5) is arranged on a side of the first storage tank (2.1) away from the protective shell (8.4), and the first storage tank (2.1) is slidably connected to the first guide rod (8.5) via a first sliding sleeve; the second guide rod (8.6) is arranged on a side of the second storage tank (3.1) away from the protective shell (8.4), and the second storage tank (3.1) is slidably connected to the second guide rod (8.6) via a second sliding sleeve; a first limit block is arranged on the top end of the first guide rod (8.5); and a second limit block is arranged on the top end of the second guide rod (8.6); The first heating component (4) is connected to the first storage tank (2.1) via the first sliding sleeve; and the second heating component (5) is connected to the second storage tank (3.1) via the second sliding sleeve.

9. The 3D printing device for aluminum-based composite materials according to claim 8, characterized in that: It also includes a first buoy assembly and a second buoy assembly; the first buoy assembly includes a first movable rod and a first floating plate; a first through hole with a hole diameter larger than the diameter of the first movable rod is provided on the first tank cover (2.1.2); one end of the first movable rod is arranged in the first storage tank (2.1) through the first through hole and connected to the first floating plate, while the other end is arranged outside the first storage tank (2.1) and connected to the first anti-slip block; The second buoy assembly comprises a second movable rod and a second floating plate; a second through hole with a hole diameter larger than the diameter of the second movable rod is provided on the second tank cover (3.1.2); one end of the second movable rod is arranged in the second storage tank (3.1) through the second through hole and connected to the second floating plate, while the other end is arranged outside the second storage tank (3.1) and connected to the second anti-slip block; The first storage tank (2.1) and the second storage tank (3.1) are both transparent storage tanks.

10. An application method of the 3D printing device for aluminum-based composite materials according to any one of claims 1 to 9, characterized in that: include: Step S1: Adding materials and heating The lifting drive member (8.1) is used to drive the screw rod (8.2) to drive the threaded sleeve (8.3) to descend from the 3D printing spraying position to the feeding position, wherein the threaded sleeve (8.3) is respectively linked with the first connecting rod and the second connecting rod to realize the first storage tank (2.1) and the second storage tank (3.1) descending to the feeding position; the first tank cover (2.1.2) is lifted, and powdered metal is added to the first storage tank (2.1), and after it is full, the first tank cover (2.1.2) is closed; the second tank cover (3.1.2) is lifted, and liquid metal is added to the second storage tank (3.1), and after it is full, the second tank cover (3.1.2) is closed; Before adding materials, the first heating component (4) and the second heating component (5) are used to heat the first cavity ( 2.1.1) and the second cavity (3.1.1) are heated to realize the preheating function; after the material is added, the first heating component (4) continuously heats the first cavity (2.1.1) to heat the powdered metal in the first storage tank (2.1); the second heating component (5) continuously heats the second cavity (3.1.1) to heat the liquid metal in the second storage tank (3.1); Step S2: Reset The lifting drive member (8.1) is used to drive the screw rod (8.2) to drive the threaded sleeve (8.3) to rise from the feeding position and return to the 3D printing spraying position, wherein: The threaded sleeve (8.3) is linked to the first connecting rod and the second connecting rod respectively to realize the first storage tank (2.1) and the second storage tank (3.1) to rise and reset to the 3D printing spraying position; Step S3: Complete 3D printing spraying Opening the first valve on the first soft material guide tube (2.5), using the feed drive (2.2) to drive the rotating rod (2.3) to drive the spiral blade (2.4) to rotate and push the powdered metal through the first soft material guide tube (2.5) into the premixing component (6); Opening the second valve on the second soft material guide pipe (3.4), using the booster pump (3.2) to increase the pressure in the second storage tank (3.1) through the booster pipe (3.3), so as to force the liquid metal to flow through the second soft material guide pipe (3.4) into the premixing component (6); The powdered metal and the liquid metal are mixed in the premixing component (6) and then sprayed out through the 3D printing nozzle (7) to complete the 3D printing spraying; During the 3D printing spraying process, by observing the height positions of the first buoy assembly and the second buoy assembly or directly observing the remaining powdered metal in the transparent first storage tank (2.1) and the remaining liquid metal in the second storage tank (3.1), it is directly determined whether feeding is required; if feeding is required, steps S1-S2 are repeated.

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