Material extrusion structure of 3D printer

Abstract

The utility model discloses a material extrusion structure of a 3D (three-dimensional) printer, which belongs to the technical field of printing and comprises a material extrusion pipe communicated with an external storage device of the 3D printer, an external thread is arranged on the periphery of the material extrusion pipe, and a detachable pipe is in threaded connection with the periphery of the material extrusion pipe; the material gathering hopper is fixedly connected with the dismounting pipe, and the bottom end of the material gathering hopper communicates with an extrusion head used for achieving 3D printing; the two connecting blocks are symmetrically connected to the periphery of the material extrusion pipe, the connecting blocks are connected with electric push rods with a heat-resisting function, moving parts of the electric push rods are connected with adjusting rods, the two adjusting rods are connected with connecting plates, and the two connecting plates are jointly sleeved with a plugging plate used for plugging the extrusion head; the top end of the dismounting pipe is connected with a threaded pipe which is in threaded connection with a fixed threaded rod. According to the 3D printer material extrusion structure, the extrusion head can be blocked, heating can be conducted, and the influence of external air on the extrusion head and materials is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing, in particular to a material extrusion structure of a 3D printer. Background Art

[0002] 3D printer, also known as three-dimensional printer, is a rapid prototyping process equipment. It is a technology that uses digital model files as the basis, uses powdered metal or plastic and other bonded materials to construct objects by printing layer by layer.

[0003] The 3D printer will connect the material extrusion structure to assist in material discharge, but the traditional extrusion structure has no blocking function, and air may enter the extrusion structure, affecting the material and subsequent extrusion effects. Utility Model Content

[0004] The purpose of the utility model is to provide a 3D printer material extrusion structure to solve the problems raised in the background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a 3D printer material extrusion structure, comprising:

[0006] The material extrusion tube is connected to the material storage device of the external 3D printer, the outer circumference of the material extrusion tube is provided with an external thread, and the outer circumference of the material extrusion tube is threadedly connected to a disassembly tube;

[0007] A material collecting hopper is connected and fixed to the disassembly pipe, and the bottom end of the material collecting hopper is connected to an extruder head for realizing 3D printing;

[0008] Two connecting blocks are symmetrically connected to the outer periphery of the material extrusion tube, the connecting blocks are connected to an electric push rod with a heat-resistant function, the moving part of the electric push rod is connected to an adjusting rod, the two adjusting rods are connected to connecting plates, and the two connecting plates are jointly sleeved with a blocking plate for blocking the extrusion head;

[0009] The top of the disassembly pipe is connected with a threaded pipe, the threaded pipe is threadedly connected with a fixed threaded rod, and a circular channel for the fixed threaded rod to pass through is opened on the side of the material extrusion pipe.

[0010] As a preferred embodiment, a heat-insulating ring plate is fixedly connected to the outer periphery of the material extrusion tube, and two circular channels for the adjusting rod to pass through are arranged on the top of the heat-insulating ring plate.

[0011] As a preferred embodiment, the outer periphery of the thermal insulation ring plate is connected to an thermal insulation outer tube, and the inner wall of the thermal insulation outer tube is connected to a plurality of limiting plates arranged in a circular array.

[0012] As a preferred embodiment, the inner cavity of the insulating outer tube is provided with an insulating inner tube, the top end of the insulating inner tube is connected to two clamping plates, and the bottom end of the insulating inner tube is rotatably connected to a flap.

[0013] As a preferred embodiment, the inner wall of the insulating outer tube, the inner wall of the insulating inner tube and the top of the flip cover are all equipped with multiple heating tubes through fixing clamps, and the inner wall of the insulating outer tube and the inner wall of the insulating inner tube are all equipped with thermometers.

[0014] As a preferred embodiment, two threaded channels are provided on the side of the insulation outer tube, and the threaded channels are threadedly connected with adjusting threaded rods, and the outer wall of the insulation inner tube is provided with a plurality of circular holes for the adjusting threaded rods to pass through.

[0015] As a preferred embodiment, the outer periphery of the heat-insulating outer tube is connected to two symmetrically arranged side support plates, the flap is connected to a draw rope, and the side support plates are connected to fixing clamps for fixing the draw rope.

[0016] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0017] The material extrusion structure of the 3D printer can block the extruder head with a blocking plate before use to prevent the outside air and external factors from affecting the material. The contraction of the electric push rod can ensure the stability of the adjustment rod and the connecting plate, and thus ensure the stability of the blocking plate. When extrusion is required, the electric push rod is controlled to extend in advance, and the blocking plate is moved close to one of the adjustment rods to expose the extruder head. The electric push rod is controlled to contract so that the connecting plate is against the hopper to prevent the blocking plate and the connecting plate from affecting the extruder head.

[0018] The material extrusion structure of the 3D printer can meet different usage needs by replacing the disassembly tube and different extrusion heads before use; the stability of the disassembly tube can be ensured by fixing it with a fixed threaded rod;

[0019] The material extrusion structure of the 3D printer, the heat preservation ring plate, the heat preservation outer tube, the heat preservation inner tube and the flap can be heat-insulated. The heating of the heating tube can ensure the temperature of the material extrusion tube, the disassembly tube, the gathering hopper and the extrusion head before use. When in use, the heat preservation inner tube is controlled to move up to a specified height, the flap is flipped, and the drawstring is fixed with a fixing clip so that the flap is in an inclined state. At this time, the heating of part of the heating tube can make the nearby space in a heated state, reducing the influence of the outside air on the extrusion head and the material;

[0020] The material extrusion structure of the 3D printer can not only seal the extrusion head, but also heat it to reduce the influence of external air on the extrusion head and the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the material extrusion tube and the adjusting rod of the utility model;

[0024] Figure 3 It is a schematic structural diagram of the heat-insulating inner tube and the flip cover of the utility model;

[0025] Figure 4 It is a schematic structural diagram of the thermal insulation outer tube of the utility model when viewed from above.

[0026] Description of reference numerals:

[0027] In the figure: 1-material extrusion tube; 2-disassembly tube; 3-aggregation hopper; 4-extrusion head; 5-connecting block; 6-electric push rod; 7-adjusting rod; 8-connecting plate; 9-sealing plate; 10-threaded tube; 11-fixed threaded rod; 12-insulation ring plate; 13-insulation outer tube; 14-limiting plate; 15-insulation inner tube; 16-card; 17-flip cover; 18-heating tube; 19-thermometer; 20-adjusting threaded rod; 21-side support plate; 22-pull rope; 23-fixing clamp. DETAILED DESCRIPTION

[0028] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0029] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0030] The connection method can be bonding, welding, bolt connection and other existing methods, depending on actual needs.

[0031] See also Figures 1 to 4 As shown, a 3D printer material extrusion structure, this embodiment includes:

[0032] The material extrusion tube 1 is connected to the material storage device of the external 3D printer. The outer periphery of the material extrusion tube 1 is provided with an external thread. The outer periphery of the material extrusion tube 1 is threadedly connected with a disassembly tube 2. The top of the disassembly tube 2 is connected with a threaded tube 10. The threaded tube 10 is threadedly connected with a fixed threaded rod 11. The side of the material extrusion tube 1 is provided with a circular channel for the fixed threaded rod 11 to pass through, so as to facilitate the disassembly and replacement of a new disassembly tube 2 and an extrusion head 4.

[0033] A material collecting hopper 3 is connected and fixed to the disassembly tube 2, and the bottom end of the material collecting hopper 3 is connected to an extruder head 4 for realizing 3D printing;

[0034] Two connecting blocks 5 are symmetrically connected to the outer periphery of the material extrusion tube 1. The connecting blocks 5 are connected to an electric push rod 6 with a heat-resistant function. If the temperature is too high, the electric push rod 6 can be replaced with a non-electric telescopic rod that can be manually adjusted. The moving part of the electric push rod 6 is connected to an adjusting rod 7. The two adjusting rods 7 are both connected to a connecting plate 8. The length of the connecting plate 8 ensures that it will not affect the extrusion head 4. The two connecting plates 8 are jointly sleeved with a blocking plate 9 for blocking the extrusion head 4. Before use, the blocking plate 9 can block the extrusion head 4 to prevent outside air and external factors from affecting the material. When extrusion work is required, the electric push rod 6 is controlled to extend in advance, and the blocking plate 9 is moved close to one of the adjusting rods 7 to expose the extrusion head 4. The electric push rod 6 is controlled to contract so that the connecting plate 8 is against the hopper 3 to prevent the blocking plate 9 and the connecting plate 8 from affecting the extrusion head 4.

[0035] The outer periphery of the material extrusion tube 1 is fixedly connected with an insulation ring plate 12, and the top of the insulation ring plate 12 is provided with two circular channels for the adjustment rod 7 to pass through. The outer periphery of the insulation ring plate 12 is connected with an insulation outer tube 13, and the inner wall of the insulation outer tube 13 is connected with a plurality of limit plates 14 arranged in a circular array, and the limit plates 14 ensure that the insulation inner tube 15 will not affect the heating tube 18. The inner cavity of the insulation outer tube 13 is provided with an insulation inner tube 15, and the top of the insulation inner tube 15 is connected with two clamping plates 16, and the limit plates 14 and the clamping plates 16 are misaligned, and the clamping plates 16 are located directly above the adjusting threaded rod 20. When accidentally dropped, they will be stuck by the clamping plates 16, and the inner wall of the insulation outer tube 13, the inner wall of the insulation inner tube 15 and the flip cover 17 A plurality of heating tubes 18 are installed on the top of each of the heat-insulating outer tubes 13 and the inner walls of the heat-insulating inner tubes 15 through fixing clamps 23. A thermometer 19 is installed on the inner walls of the heat-insulating outer tube 13 and the heat-insulating inner tube 15. The thermometer 19 includes a display part, a connecting part and a measuring part. The display part is on the outside and the measuring part is on the inside. Two threaded channels are provided on the side of the heat-insulating outer tube 13. An adjusting threaded rod 20 is threadedly connected to the threaded channels. A plurality of circular holes for the adjusting threaded rod 20 to pass through are provided on the outer wall of the heat-insulating inner tube 15. Before use, the heat-insulating ring plate 12, the heat-insulating outer tube 13, the heat-insulating inner tube 15 and the flip cover 17 can be insulated. The heating of the heating tube 18 can ensure the temperature of the material extrusion tube 1, the disassembly tube 2, the aggregation hopper 3 and the extrusion head 4 before use.

[0036] The bottom end of the insulation inner tube 15 is rotatably connected with a flap 17, and the outer periphery of the insulation outer tube 13 is connected to two symmetrically arranged side support plates 21, and the flap 17 is connected to a draw rope 22, and the side support plate 21 is connected to a fixing clamp 23 for fixing the draw rope 22. The fixing clamp 23 is a prior art and can also be composed of a round tube and a threaded rod. The end of the threaded rod is adapted to the inner cavity of the round tube and is arranged in an arc shape to fix the draw rope passing through the round tube. When it is needed, the fixing of the draw rope 22 by the fixing clamp 23 is released, the flap 17 is opened, the insulation inner tube 15 is controlled to move up to a specified height, and the threaded rod 20 is adjusted to fix it, the flap 17 is flipped to the other side, and the draw rope 22 is fixed by another fixing clamp 23, so that the flap 17 is in a tilted state. At this time, the heating of part of the heating tube 18 can make the nearby space in a heated state, thereby reducing the influence of outside air on the extrusion head 4 and the material.

[0037] The electric push rod 6, the heating tube 18, and the thermometer 19 are all conventional instruments. Their working principles, sizes, and models are irrelevant to the problem solved by the present application, so they will not be described in detail. The control method of the present invention is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0038] How it works

[0039] The material extrusion structure of the 3D printer can be insulated before use by the heat-insulating ring plate 12, the heat-insulating outer tube 13, the heat-insulating inner tube 15 and the flip cover 17. The heating of the heating tube 18 can ensure the temperature of the material extrusion tube 1, the disassembly tube 2, the gathering hopper 3 and the extrusion head 4 before use. Before use, the blocking plate 9 can block the extrusion head 4 to prevent the outside air and external factors from affecting the material. When the extrusion work is required, the electric push rod 6 is controlled to extend in advance, and the blocking plate 9 is moved to be close to one of the adjustment rods 7 to expose the extrusion head 4, and the electric push rod 6 is controlled to contract so that the connecting plate 8 is against the gathering hopper 3 to prevent the blocking plate 9 and the connecting plate 8 from affecting the extrusion head 4.

[0040] When it is needed, release the fixing of the pull rope 22 by a fixing clip 23, open the flap 17, control the heat-insulating inner tube 15 to move up to a specified height, fix it with the adjusting threaded rod 20, flip the flap 17 to the other side, and fix the pull rope 22 with another fixing clip 23, so that the flap 17 is in a tilted state. At this time, the heating of part of the heating tube 18 can make the nearby space in a heated state, reducing the influence of outside air on the extrusion head 4 and the material.

[0041] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 3D printer material extrusion structure, characterized in that: include: A material extrusion tube (1) is connected to a material storage device of an external 3D printer, an outer circumference of the material extrusion tube (1) is provided with an external thread, and a disassembly tube (2) is connected to the outer circumference of the material extrusion tube (1) through the thread; A material collecting hopper (3) is connected and fixed to the disassembly tube (2), and the bottom end of the material collecting hopper (3) is connected to an extruder head (4) for realizing 3D printing; Two connecting blocks (5) are symmetrically connected to the outer periphery of the material extrusion tube (1); the connecting blocks (5) are connected to an electric push rod (6) having a heat-resistant function; the moving part of the electric push rod (6) is connected to an adjusting rod (7); the two adjusting rods (7) are both connected to a connecting plate (8); the two connecting plates (8) are jointly sleeved with a blocking plate (9) for blocking the extrusion head (4); The top end of the disassembly tube (2) is connected to a threaded tube (10), and the threaded tube (10) is threadedly connected to a fixed threaded rod (11). A circular channel for the fixed threaded rod (11) to pass through is provided on the side of the material extrusion tube (1).

2. A 3D printer material extrusion structure according to claim 1, characterized in that: A heat-insulating ring plate (12) is fixedly connected to the outer periphery of the material extrusion tube (1), and two circular passages for the adjusting rod (7) to pass through are provided at the top of the heat-insulating ring plate (12).

3. A 3D printer material extrusion structure according to claim 2, characterized in that: The outer periphery of the thermal insulation ring plate (12) is connected to a thermal insulation outer tube (13), and the inner wall of the thermal insulation outer tube (13) is connected to a plurality of limiting plates (14) arranged in a circular array.

4. A 3D printer material extrusion structure according to claim 3, characterized in that: The inner cavity of the thermal insulation outer tube (13) is provided with a thermal insulation inner tube (15), the top end of the thermal insulation inner tube (15) is connected to two clamping plates (16), and the bottom end of the thermal insulation inner tube (15) is rotatably connected to a flip cover (17).

5. A 3D printer material extrusion structure according to claim 4, characterized in that: The inner wall of the thermal insulation outer tube (13), the inner wall of the thermal insulation inner tube (15) and the top of the flip cover (17) are all equipped with a plurality of heating tubes (18) via fixing clips (23), and the inner wall of the thermal insulation outer tube (13) and the inner wall of the thermal insulation inner tube (15) are all equipped with thermometers (19).

6. A 3D printer material extrusion structure according to claim 5, characterized in that: The side surface of the thermal insulation outer tube (13) is provided with two threaded channels, and the threaded channels are threadedly connected with an adjusting threaded rod (20). The outer wall of the thermal insulation inner tube (15) is provided with a plurality of circular holes for the adjusting threaded rod (20) to pass through.

7. A 3D printer material extrusion structure according to claim 4, characterized in that: The outer periphery of the heat-insulating outer tube (13) is connected to two symmetrically arranged side support plates (21), the flip cover (17) is connected to a drawstring (22), and the side support plates (21) are connected to a fixing clamp (23) for fixing the drawstring (22).

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