Double-layer constant-temperature shell structure of 3D printer

Abstract

The utility model discloses a double-layer constant-temperature shell structure of a 3D printer. Heat preservation and insulation plates are arranged between the two sides, corresponding to a hot bed, of a shell and a corresponding Z-axis driving assembly. A groove is formed in the position, corresponding to the protruding part of the Z-axis connecting plate, of the heat preservation and insulation plate. The top and the bottom of the Z-axis connecting plate are each provided with a Z-axis heat insulation organ cover used for sealing the groove of the heat preservation and insulation plate. Y-axis heat insulation organ covers capable of extending and retracting along with movement of the Y-axis driving assembly cross beam are arranged on the two sides, corresponding to the Y-axis driving assembly cross beam, of the top in the shell; x-axis heat insulation organ covers capable of extending and retracting along with movement of the printing spray head are arranged on the two sides, corresponding to the printing spray head, in a strip-shaped open groove of a cross beam of the Y-axis driving assembly. A double-layer heat preservation structure is provided for the printing space where the hot bed is located through the shell and the heat preservation and insulation plate, the constant-temperature performance of the printing space is effectively improved, meanwhile, heat in the printing space can be prevented from influencing normal operation of the Z-axis driving assembly, and the service life of the Z-axis driving assembly is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, in particular to a double-layer constant temperature shell structure of a 3D printer. Background Art

[0002] At present, with the wider and wider application scope of FDM (fused deposition modeling technology), different fields have higher and higher requirements for the performance of 3D printing consumables. The high-temperature consumables that have emerged also have higher requirements for the temperature of the constant temperature printing chamber. It is usually necessary to ensure that the temperature of the constant temperature printing chamber is stable between certain values, so as to ensure the stable performance of the consumables. At present, in the design of the constant temperature printing chamber of a 3D printer, it is generally controlled by a heating device, and one or two layers of simple insulation shells are set on the outside. The hot bed and the Z-axis motion assembly are included in the entire heating chamber, and because the motion components are all in the heating chamber, they are prone to structural deformation, lubrication and drying between the motion components, and increased friction after long-term use, and the service life of the Z-axis motion assembly is short. This structure generally cannot control the temperature with high precision, and is not conducive to the assembly and maintenance of the Z-axis motion assembly, resulting in the inability to meet high-quality printing effects. The above defects are problems that technicians in this field need to solve urgently;

[0003] A Chinese patent (publication number: CN209580505U) discloses a thermal insulation protective cover, comprising a plurality of compressible and stretchable thermal insulation units connected in sequence; the cross-section of any thermal insulation unit along its length direction is a regular hexagon; the corresponding side surfaces of two adjacent thermal insulation units partially or completely overlap; the Z-axis motion component of the patented structure is located in the heating chamber, which is prone to problems such as lubrication and drying of the Z-axis motion component, increased friction, and short service life. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology, the utility model discloses a double-layer constant temperature shell structure of a 3D printer.

[0005] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0006] A double-layer constant temperature shell structure of a 3D printer comprises a box-type shell, an X-axis drive assembly and a Y-axis drive assembly for driving a print head are arranged on the top of the shell, a hot bed is arranged in the shell, and Z-axis drive assemblies for driving the hot bed to move up and down are arranged on the left and right sides of the shell; a heat preservation and heat insulation board is arranged between the two sides of the hot bed and the corresponding Z-axis drive assembly in the shell; the Z-axis drive assembly is connected to the Z-axis connecting plate by the upper and lower driving, and the Z-axis connecting plate is provided with a protrusion corresponding to the hot bed and fastened, and the heat preservation and heat insulation board corresponds to the protrusion of the Z-axis connecting plate A slot is provided at the position of the part, and a Z-axis heat insulation accordion cover is provided at the top and bottom of the Z-axis connecting plate for closing the slot of the thermal insulation board; the X-axis driving assembly is mounted on the crossbeam of the Y-axis driving assembly, and the crossbeam is provided with a strip slot that allows the print head to pass through, and Y-axis heat insulation accordion covers that can move and extend along with the movement of the Y-axis driving assembly crossbeam are provided on both sides of the top of the shell body corresponding to the crossbeam of the Y-axis driving assembly; X-axis heat insulation accordion covers that can move and extend along with the movement of the print head are provided on both sides of the strip slot of the crossbeam of the Y-axis driving assembly corresponding to the print head.

[0007] Preferably, both ends of the Z-axis connecting plate are provided with protrusions, and the two protrusions are respectively and firmly connected with the two corner ends on the corresponding sides of the hot bed.

[0008] Preferably, a transparent door is installed on the front side of the shell, and the transparent door body is a multi-layer structure with a hollow interior.

[0009] Preferably, openings are provided on both sides of the shell, and baffles are detachably connected to the corresponding opening positions.

[0010] Preferably, an electric heating device and a temperature sensor are provided in the shell.

[0011] Preferably, an internal circulation fan is provided in the housing.

[0012] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0013] The utility model discloses a double-layer constant temperature shell structure of a 3D printer, which has a simple structure. The double-layer thermal insulation structure is provided for the printing space where the hot bed is located through the shell and the thermal insulation board, thereby effectively improving the constant temperature performance of the printing space. The thermal insulation board is provided with a slot corresponding to the protruding portion of the Z-axis connecting plate. The top and bottom of the Z-axis connecting plate are provided with a Z-axis thermal insulation accordion cover for closing the slot of the thermal insulation board. The Z-axis thermal insulation accordion cover can improve the sealing of the printing space where the hot bed is located, improve the thermal insulation performance, and at the same time prevent the heat in the printing space from affecting the normal operation of the Z-axis drive component, thereby improving the service life of the Z-axis drive component. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the structure of the shell;

[0015] Figure 2 It is a structural schematic diagram of the utility model.

[0016] In the figure: 1. Shell; 2. X-axis drive assembly; 3. Y-axis drive assembly; 4. Hot bed; 5. Z-axis drive assembly; 6. Z-axis connecting plate; 7. Thermal insulation board; 8. Z-axis thermal insulation accordion cover; 9. Y-axis thermal insulation accordion cover; 10. X-axis thermal insulation accordion cover; 11. Print nozzle; 12. Transparent door; 13. Baffle; 14. Electric heating device; 15. Temperature sensor; 16. Internal circulation fan. DETAILED DESCRIPTION

[0017] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.

[0018] Embodiment 1, in combination with Figure 1 A double-layer constant temperature shell structure of a 3D printer includes a box-type shell 1, an X-axis driving component 2 and a Y-axis driving component 3 for driving a print head 11 are arranged on the top of the shell 1, a hot bed 4 is arranged inside the shell 1, and Z-axis driving components 5 for driving the hot bed 4 to move up and down are arranged on both sides of the shell 1;

[0019] In the shell 1, both sides of the hot bed 4 and the corresponding Z-axis drive assembly 5 are provided with heat insulation plates 7, which can effectively ensure that the temperature of the printing space where the hot bed 4 is located is constant; the Z-axis drive assembly 5 is connected to the Z-axis connecting plate 6 for up and down driving, and the Z-axis connecting plate 6 is provided with a protrusion that is fastened to the hot bed 4, that is, the Z-axis drive assembly 5 drives the hot bed 4 to move up and down by driving the Z-axis connecting plate 6 to move up and down;

[0020] The heat preservation and insulation board 7 is provided with a slot at a position corresponding to the protruding portion of the Z-axis connecting plate 6, and the top and bottom of the Z-axis connecting plate 6 are provided with a Z-axis heat insulation accordion cover 8 for closing the slot of the heat preservation and insulation board 7. The Z-axis heat insulation accordion cover 8 can improve the sealing of the printing space where the hot bed 4 is located, improve the heat preservation performance, and at the same time prevent the heat in the printing space from affecting the normal operation of the Z-axis drive assembly 5, thereby improving the service life of the Z-axis drive assembly 5;

[0021] The X-axis driving assembly 2 is mounted on the crossbeam of the Y-axis driving assembly 3, and the crossbeam is provided with a strip groove that allows the print head 11 to pass through. The top of the shell 1 corresponds to both sides of the crossbeam of the Y-axis driving assembly 3 and is provided with a Y-axis heat-insulating accordion cover 9 that can follow the movement of the crossbeam of the Y-axis driving assembly 3 and extend and retract; the strip groove of the crossbeam of the Y-axis driving assembly 3 corresponds to both sides of the print head 11 and is provided with an X-axis heat-insulating accordion cover 10 that can follow the movement of the print head 11 and extend and retract. The Y-axis heat-insulating accordion cover 9 and the X-axis heat-insulating accordion cover 10 are also used to improve the sealing of the printing space where the hot bed 4 is located, thereby improving the thermal insulation performance.

[0022] Embodiment 2, in combination with Figures 1-2 , a double-layer constant temperature shell structure of a 3D printer, which is different from Example 1 in that, on the basis of Example 1, both ends of the Z-axis connecting plate 6 are provided with protrusions, and the two protrusions are respectively fastened and connected with the two corner ends of the corresponding sides of the hot bed 4, effectively improving the stability of the hot bed 4; a transparent door 12 is installed on the front side of the shell 1, and the transparent door 12 door body is a multi-layer structure with a hollow interior, so that the printing status in the shell 1 can be observed through the transparent door 12, and the thermal insulation performance can be ensured at the same time; openings are provided on both sides of the shell 1, and a baffle 13 is detachably connected to the corresponding opening position, which can facilitate the later inspection and maintenance of the Z-axis drive assembly 5.

[0023] Embodiment 3, in combination with Figures 1-2 A double-layer constant temperature shell structure of a 3D printer. On the basis of embodiment 1 or 2, an electric heating device 14 and a temperature sensor 15 are arranged in the shell 1. The temperature sensor 15 can monitor the temperature in the printing space where the hot bed 4 is located in real time. When the ambient temperature is lower than the optimal printing temperature, the electric heating device 14 can be turned on to heat the printing space where the hot bed 4 is located, thereby improving the printing quality.

[0024] The housing 1 is provided with an internal circulation fan 16, which can accelerate the airflow velocity in the printing space, making the temperature in the printing space more balanced, and further improving the printing quality.

[0025] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A double-layer constant temperature housing structure of a 3D printer, comprising a box-shaped housing (1), an X-axis driving assembly (2) and a Y-axis driving assembly (3) for driving a printing nozzle (11) being arranged on the top of the housing (1), a heated bed (4) being arranged inside the housing (1), and Z-axis driving assemblies (5) for driving the heated bed (4) to move up and down being arranged on both left and right sides of the housing (1); the characteristics thereof are: In the housing (1), a heat-insulating plate (7) is provided on both sides of the corresponding hot bed (4) and between the corresponding Z-axis drive assembly (5); the Z-axis drive assembly (5) is connected to a Z-axis connecting plate (6) for driving up and down, the Z-axis connecting plate (6) is provided with a protrusion that is fastened to the hot bed (4), the heat-insulating plate (7) is provided with a slot at a position corresponding to the protrusion of the Z-axis connecting plate (6), and the top and bottom of the Z-axis connecting plate (6) are provided with a Z-axis heat-insulating bellows cover (8) for closing the slot of the heat-insulating plate (7); The axis driving assembly (2) is mounted on a crossbeam of the Y-axis driving assembly (3), and the crossbeam is provided with a strip-shaped slot that allows a print head (11) to pass through. A Y-axis heat-insulating accordion cover (9) that can follow the movement of the Y-axis driving assembly (3) and be retractable is provided on both sides of the top of the housing (1) corresponding to the crossbeam of the Y-axis driving assembly (3). An X-axis heat-insulating accordion cover (10) that can follow the movement of the print head (11) and be retractable is provided on both sides of the crossbeam of the Y-axis driving assembly (3) and corresponding to the print head (11).

2. The double-layer constant temperature housing structure of the 3D printer according to claim 1, characterized in that: Both ends of the Z-axis connecting plate (6) are provided with protrusions, and the two protrusions are respectively and firmly connected to the two corner ends of the corresponding sides of the hot bed (4).

3. The double-layer constant temperature housing structure of the 3D printer according to claim 1, characterized in that: A transparent door (12) is installed on the front side of the housing (1), and the transparent door (12) has a multi-layer structure with a hollow interior.

4. The double-layer constant temperature housing structure of the 3D printer according to claim 1, characterized in that: The shell (1) is provided with openings on both sides, and baffles (13) are detachably connected to the positions corresponding to the openings.

5. The double-layer constant temperature housing structure of the 3D printer according to claim 1, characterized in that: An electric heating device (14) and a temperature sensor (15) are provided in the housing (1).

6. The double-layer constant temperature housing structure of the 3D printer as claimed in claim 5, characterized in that: An internal circulation fan (16) is provided in the housing (1).

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