CN211682654U

CN211682654U - Aggregate printing head

Info

Publication number: CN211682654U
Application number: CN201922358782.7U
Authority: CN
Inventors: 刘培善; 李进; 沈明圆
Original assignee: Nanjing Kenyo Precision Machine Manufacture Co ltd
Current assignee: Nanjing Kenyo Precision Machine Manufacture Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-10-16
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to the technical field of 3D printing building materials, and discloses a bone material printing head, which comprises a hopper, a conveying spiral blade and a driving mechanism, wherein the hopper is provided with a feeding interface and a discharging port; the conveying helical blade is installed in the hopper through an adjusting structure, and the adjusting structure is configured to adjust the blade edge of the conveying helical blade to be in contact with the inner wall of the hopper; the driving mechanism is connected with the conveying spiral blade and can drive the conveying spiral blade to rotate. The utility model discloses an aggregate is beaten printer head and can be adjusted the axial position of carrying the helical blade for the hopper, has avoided appearing the gap between the inner wall of the edge of the blade of carrying the helical blade and hopper to the printing effect of aggregate has been ensured.

Description

Aggregate printing head

Technical Field

The utility model relates to a 3D prints building material technical field, especially relates to a printer head is beaten to aggregate.

Background

At present, the 3D printing technology is rapidly popularized in the field of buildings, and concrete is used as a building material with the largest using amount and the widest range in buildings and is a main material of the 3D printing technology for buildings.

The building 3D printing technology conforms to the development of the industrial revolution, and compared with the traditional construction process, the building 3D printing technology has the following advantages:

(1) the construction time on site is reduced through the constant construction speed, and the construction efficiency is improved;

(2) the template is not needed, the waste of the template can be reduced, the construction cost is reduced, and the sustainable construction of the building is improved;

(3) the customizability of the building is strong without using a template, and any detail characteristics, complex curved surfaces, pipelines and the like can be printed, so that the more complex design and aesthetic purposes are realized;

(4) the method has the advantages that the working posts based on the high-end technology are created, the whole process can be controlled by a computer program according to a computer design drawing, and manual intervention is not needed, so that the casualty accident risk in the building industry is greatly reduced, a large amount of labor and labor are saved, and the safety measure cost for building construction is reduced;

(5) can reduce the dust and noise pollution of the building, protect the environment and realize green environmental protection.

The existing concrete 3D printing equipment adopts a printing head to extrude aggregate, carries out aggregate distribution according to a set printing route, levels the aggregate by a scraper plate, sprays prepared quick-setting thixotropic cement paste on the leveled aggregate by utilizing a printing nozzle, the quick-setting thixotropic cement paste flows into an aggregate gap under the action of gravity and is solidified, and the solidified aggregate and the cement paste form a concrete core part.

The structure of the existing printing head comprises a hopper and a conveying spiral blade arranged in the hopper, and the conveying spiral blade is driven to rotate, so that aggregate entering from a feeding hole of the hopper can be extruded from a discharging hole of the hopper. The edge of the conveying spiral blade is required to be tightly attached to the inner wall of the hopper so as to prevent the aggregate from leaking out of a gap between the edge of the conveying spiral blade and the inner wall of the hopper. As the edges of the conveying spiral blades are abraded after a long time, gaps exist between the edges of the conveying spiral blades and the inner wall of the hopper after a long time, and the extrusion of aggregates is not facilitated.

In view of the above-mentioned drawbacks, the present designer is actively making research and innovation to create a new structure of the aggregate printing head, so that the aggregate printing head has more industrial utility value.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a printer head is beaten to aggregate can adjust the axial position of carrying the spiral leaf for the hopper to avoid carrying the gap to appear between the edge of spiral leaf and the inner wall of hopper, and can realize the printing of coarse aggregate.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a aggregate beats printer head, includes hopper, transport spiral leaf and actuating mechanism, wherein:

the hopper is provided with a feeding interface and a discharging port;

the conveying helical blade is installed in the hopper through an adjusting structure, and the adjusting structure is configured to adjust the blade edge of the conveying helical blade to be in contact with the inner wall of the hopper;

the driving mechanism is connected with the conveying spiral blade and can drive the conveying spiral blade to rotate.

As a preferable scheme of the above aggregate printing head, the conveying helical blade includes a shaft and the blades spirally distributed on the shaft, and the shaft is connected to the driving mechanism.

As a preferable aspect of the aggregate printing head, the adjusting structure includes a connecting plate and a plurality of adjusting screws connecting the connecting plate and the hopper, the connecting plate fixes the driving mechanism, and an axial direction of each of the adjusting screws is the same as an axial direction of the shaft rod.

As a preferable scheme of the above aggregate printing head, the driving mechanism includes a motor and a speed reducer in transmission connection, and an output end of the speed reducer penetrates through the connecting plate and is connected with the shaft rod.

As a preferable scheme of the aggregate printing head, three groups of adjusting screws are uniformly connected to the connecting plate in the circumferential direction.

As a preferable mode of the aggregate printing head, the number of the blades is two, the two blades are respectively a first blade and a second blade, and a space is formed between the first blade and the second blade.

As a preferable mode of the aggregate printing head, the first blade is close to the top of the hopper, and the second blade is close to the bottom of the hopper.

As a preferable mode of the aggregate printing head, an axial length of the first blade is smaller than an axial length of the second blade.

As a preferred scheme of the aggregate printing head, the discharge port is detachably connected with a discharge nozzle.

As a preferred scheme of the aggregate printing head, the hopper is sleeved with a mounting plate, and the mounting plate is provided with a plurality of mounting holes.

The utility model has the advantages that: the position of the conveying spiral blade is adjusted by the adjusting structure, so that the blade edge of the conveying spiral blade and the inner wall of the hopper are kept in a contact state under any condition, the aggregate can be completely prevented from leaking from a gap between the edge of the conveying spiral blade and the inner wall of the hopper, the printing effect of the aggregate is ensured, and meanwhile, the printing of coarse aggregate can be realized.

Drawings

Fig. 1 is a schematic structural diagram of an aggregate printing head according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of an aggregate printing head according to an embodiment of the present invention.

In the figure: 10-hopper, 11-feeding interface, 12-discharging port, 13-discharging nozzle, 20-conveying spiral blade, 21-blade, 211-first blade, 212-second blade, 22-shaft rod, 30-driving mechanism, 31-motor, 32-speed reducer, 40-adjusting structure, 41-connecting plate, 42-adjusting screw rod, 50-mounting plate and 51-mounting hole.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 2, the aggregate printing head of the present invention includes a hopper 10, a conveying screw blade 20, and a driving mechanism 30. The hopper 10 is conical and is provided with a feeding interface 11 and a discharge port 12, the feeding interface 11 is arranged on the side part of the top end of the hopper 10, and the discharge port 12 is positioned at the bottom end of the hopper 10; the conveying helical blade 20 is installed in the hopper 10 through an adjusting structure 40, and the adjusting structure 40 is configured to adjust the edge of the blade 21 of the conveying helical blade 20 to be in contact with the inner wall of the hopper 10; the driving mechanism 30 is connected to the conveying screw blade 20 and can drive the conveying screw blade 20 to rotate. The position of the conveying spiral blade 20 of the aggregate printing head is adjusted by the adjusting structure 40, so that the edge of the blade 21 of the conveying spiral blade 20 is kept in a contact state with the inner wall of the hopper 10 under any condition, the aggregate can be completely prevented from leaking out of a gap between the edge of the conveying spiral blade 20 and the inner wall of the hopper 10, and the printing effect of the aggregate is ensured.

Specifically, the conveying helical blade 20 includes a shaft 22 and blades 21 spirally distributed on the shaft 22, and the shaft 22 is connected to the driving mechanism 30. In this embodiment, there are two blades 21, namely a first blade 211 and a second blade 212, and there is a gap between the first blade 211 and the second blade 212, that is, the first blade 211 is close to the top of the hopper 10, and the second blade 212 is close to the bottom of the hopper 10. The blade 21 is set to the structure of disconnection with the blade 21 of this embodiment, has saved the cost of blade 21 on the one hand, and on the other hand, the blade 21 of this structure can reduce the shearing action to the aggregate when propelling movement aggregate, can make the aggregate move to discharge gate 12 more fast and carry out the ejection of compact and print for printing efficiency. Preferably, the axial length of the first blade 211 is smaller than the axial length of the second blade 212, so that the aggregate entering from the feeding port 11 is firstly contacted with the first blade 211, the axial length of the first blade 211 is smaller, the pushing speed is higher, the aggregate rapidly enters the bottom of the hopper 10 to be contacted with the second blade 212, and the axial length of the second blade 212 is relatively longer, so that the aggregate can be sufficiently sheared in the aggregate pushing process, and the printing effect of the aggregate is ensured; meanwhile, the disconnected blade 21 can push aggregate with the diameter as large as 20mm, the requirement on the diameter of the aggregate is reduced, and the printing of coarse aggregate is realized.

As for the adjusting structure 40, the adjusting structure 40 in this embodiment includes a connecting plate 41 and a plurality of adjusting screws 42 connecting the connecting plate 41 and the hopper 10, the connecting plate 41 fixes the driving mechanism 30, and the axial direction of each adjusting screw 42 is the same as the axial direction of the shaft 22. That is, one end of the adjusting screw 42 is rotatably connected to the hopper 10, the connecting plate 41 is threadedly connected to the adjusting screw 42, and the adjusting screw 42 is screwed, so that the connecting plate 41 can move in the axial direction of the adjusting screw 42, thereby driving the conveying screw 20 and the driving mechanism 30 to move in the axial direction of the adjusting screw 42 at the same time until the edge of the blade of the conveying screw 20 contacts the inner wall of the hopper 10. In this way, by adjusting the axial position of the conveying screw blade 20, the edge of the blade 21 of the conveying screw blade 20 is ensured to be always in contact with the inner wall of the hopper 10.

As the preferred embodiment of this embodiment, the utility model discloses evenly be connected with three adjusting screw 42 of group with connecting plate 41 circumference, there are two adjusting screw 42 in every group. In this way, the stability of the connection and adjustment can be ensured.

The driving mechanism 30 includes a motor 31 and a speed reducer 32 that are connected to each other in a driving manner, and an output end of the speed reducer 32 is connected to the shaft 22 through a connection plate 41. The speed reducer 32 is fixed to the connection plate 41. The motor 31 and the speed reducer 32 are started, so that the conveying spiral blade 20 can be driven to rotate, and the aggregate can be pushed by the conveying spiral blade 20.

In order to cooperate the demand of printing of the aggregate of various specifications, the utility model discloses can dismantle at discharge gate 12 and be connected with ejection of compact mouth 13, for example the cross section is square ejection of compact mouth 1, and printable out cross section is square aggregate.

Install on the 3D printer in order to beat printer head with this aggregate, the utility model discloses having cup jointed mounting panel 50 with hopper 10, mounting panel 50 is equipped with a plurality of mounting holes 51. The mounting of the aggregate print head may be accomplished using a mounting plate 50.

To sum up, the utility model discloses an aggregate is beaten printer head and can be adjusted the axial position who carries helical blade 20 for hopper 10, has avoided appearing the gap between the edge of the blade 21 of carrying helical blade 20 and the inner wall of hopper 10 to the printing effect of aggregate has been ensured.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. Aggregate printing head, comprising a hopper (10), a conveying screw (20) and a drive mechanism (30), wherein:

the hopper (10) is provided with a feeding interface (11) and a discharging port (12);

the conveying helical blade (20) is mounted in the hopper (10) through an adjusting structure (40), and the adjusting structure (40) is configured to adjust the edge of a blade (21) of the conveying helical blade (20) to be in contact with the inner wall of the hopper (10);

the driving mechanism (30) is connected with the conveying spiral blade (20) and can drive the conveying spiral blade (20) to rotate.

2. The aggregate printing head according to claim 1, wherein the conveying screw blade (20) comprises a shaft (22) and the blades (21) spirally distributed on the shaft (22), and the shaft (22) is connected with the driving mechanism (30).

3. The aggregate printing head according to claim 2, wherein the adjustment structure (40) comprises a connection plate (41) and a plurality of adjustment screws (42) connecting the connection plate (41) and the hopper (10), the connection plate (41) fixing the drive mechanism (30), the axial direction of each adjustment screw (42) being the same as the axial direction of the shaft (22).

4. The aggregate printing head according to claim 3, wherein the driving mechanism (30) comprises a motor (31) and a speed reducer (32) which are in transmission connection, and an output end of the speed reducer (32) penetrates through the connecting plate (41) and is connected with the shaft rod (22).

5. The aggregate printing head according to claim 3, characterized in that three groups of said adjusting screws (42) are circumferentially and uniformly connected to said connection plate (41).

6. The aggregate print head according to claim 2, characterized in that the blades (21) are two, respectively a first blade (211) and a second blade (212), the first blade (211) and the second blade (212) having a spacing therebetween.

7. The aggregate print head of claim 6, wherein the first blade (211) is proximate to a top of the hopper (10) and the second blade (212) is proximate to a bottom of the hopper (10).

8. The aggregate print head of claim 6, wherein an axial length of the first blade (211) is less than an axial length of the second blade (212).

9. An aggregate printing head according to claim 1, characterized in that the discharge opening (12) is detachably connected with a discharge nozzle (13).

10. The aggregate printing head according to claim 1, wherein a mounting plate (50) is sleeved on the hopper (10), the mounting plate (50) being provided with a plurality of mounting holes (51).