Cavity auxiliary temperature adjusting module and 3D printer

Abstract

The utility model relates to a cavity auxiliary temperature adjusting module and a 3D printer. The cavity auxiliary temperature adjusting module comprises an air flue and a temperature adjusting device, the heater is fixed to the air duct; the fan is fixed on the air duct; wherein the fan is configured to drive air to form airflow, and the airflow flows through the heater and is discharged from the air duct; when the heater works, air flow exhausted by the air duct is first air flow, and the first air flow is configured to heat the cavity. When the heater does not work, the air flow exhausted by the air duct is second air flow, and the second air flow is configured to cool the cavity. According to the invention, the temperature in the cavity can be effectively adjusted, and the space is saved.

Description

Technical Field

[0001] This application relates to the field of 3D printing, and particularly to a cavity-assisted temperature regulation module and a 3D printer. Background Art

[0002] Driven by the intelligence of computer digital technology, the application field of 3D printing technology is becoming wider and wider. Among them, the technology of 3D printing by Fused Deposition Modeling (FDM) has received more and more extensive attention. 3D printing technology uses powdery metals or plastic and other bondable materials as printing materials. Utilizing the heat melting property and adhesiveness of the printing materials, the printing materials are heated into a molten state in an extrusion mechanism. Under the control of a set program, the extrusion mechanism moves horizontally and vertically along the model contour trajectory, and extrudes the printing materials onto a printing platform module. After the printing materials are extruded, they are cooled and solidified, and adhered to the surrounding materials. Each layer is stacked on the previous layer until the model is completely stacked layer by layer.

[0003] Since different printing materials require different forming temperatures, when the forming temperature cannot be met, it will affect the final forming effect of the printing materials. Therefore, a heat dissipation module and a heating module need to be set simultaneously in a fused deposition type printing device to adjust the cavity temperature of the device. However, the simultaneous presence of a heat dissipation module and a heating module in a printing device will occupy too much space and affect the layout of other structures. Summary of the Invention

[0004] This application provides a cavity-assisted temperature regulation module, which can not only raise the temperature of the cavity but also lower the temperature of the cavity. It can not only effectively regulate the temperature in the cavity but also save space.

[0005] The cavity-assisted temperature regulation module provided by this application includes:

[0006] An air duct;

[0007] A heater fixed to the air duct; and

[0008] A fan fixed to the air duct;

[0009] Wherein, the fan is configured to drive air to form an air flow, and the air flow passes through the heater and is discharged by the air duct;

[0010] When the heater is working, the air flow discharged from the air duct is a first air flow, and the first air flow is configured to raise the temperature of the cavity;

[0011] When the heater is not working, the air flow discharged from the air duct is a second air flow, and the second air flow is configured to lower the temperature of the cavity.

[0012] Further, the heater and the fan are detachably connected to the air duct respectively.

[0013] Further, the heater is connected to the air duct through a first clamping member and / or a first threaded member;

[0014] The fan is connected to the air duct through a second clamping member and / or a second threaded member.

[0015] Further, the air duct is vertically arranged;

[0016] The fan is fixed to the lower end of the air duct;

[0017] The air flow is discharged from the upper end of the air duct.

[0018] Further, the air outlet of the air duct is located on the side surface of the air duct.

[0019] Further, the air duct is formed by butt-jointing a first housing part and a second housing part arranged at the lower end of the first housing part;

[0020] The heater is arranged at the upper end inside the second housing part and is restricted between the first housing part and the second housing part.

[0021] Further, the second housing part has two limiting grooves symmetrically opened at the upper end of the second housing part;

[0022] The heater includes a heating part, an electrical connection part, and two supporting parts. The two supporting parts are respectively fixed at both ends of the heating part and respectively penetrate through the two limiting grooves. The electrical connection part penetrates through one of the supporting parts and is electrically connected to the heating part;

[0023] The cavity auxiliary temperature regulation module further includes a heat insulation block sleeved outside the supporting part. The heat insulation block is restricted in the limiting groove and is fixed to the second housing part.

[0024] Further, the heater is a PTC heater.

[0025] This application provides a 3D printer, including any one of the above-mentioned cavity auxiliary temperature regulation modules;

[0026] The cavity auxiliary temperature regulation module is fixed inside the cavity of the 3D printer.

[0027] Further, the 3D printer includes two of the cavity auxiliary temperature regulation modules;

[0028] The two cavity auxiliary temperature regulation modules are symmetrically arranged on both sides of the cavity.

[0029] Compared with the prior art, the beneficial features of the present application are as follows: The cavity auxiliary temperature regulation module includes an air duct, a heater and a fan respectively fixed to the air duct. The fan can drive air to form an air current. After the air current passes through the heater, it is then discharged from the air duct. When the heater is working, the air current discharged from the air duct is the first air current heated by the heater, and the first air current can raise the temperature of the cavity. When the heater is not working, the air current discharged from the air duct is the second air current not heated by the heater, and the second air current can lower the temperature of the cavity. The cavity auxiliary temperature regulation module has both heating and heat dissipation functions, which can not only effectively regulate the temperature inside the cavity, but also save space and facilitate assembly. Moreover, after the fan drives the air to form an air current, the air current then passes through the heater, which can not only protect the fan, improve the service life of the cavity auxiliary temperature regulation module, but also improve the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is an exploded view of the cavity auxiliary temperature regulation module according to an embodiment of the present application;

[0031] Figure 2 is Figure 1 the schematic perspective view of the cavity auxiliary temperature regulation module shown in;

[0032] Figure 3 is Figure 2 the schematic view of the cavity auxiliary temperature regulation module shown in with the first housing part removed;

[0033] Figure 4 is Figure 1 the front view of the cavity auxiliary temperature regulation module shown in;

[0034] Figure 5 is Figure 4 the A-A cross-sectional view of;

[0035] Figure 6 is Figure 4 the right view of;

[0036] Figure 7 is Figure 6 the B-B cross-sectional view of;

[0037] Figure 8 is the schematic view of the 3D printer according to an embodiment of the present application;

[0038] Wherein: 1000 - printer, (100 - cavity auxiliary temperature control module (110 - air duct (111 - air outlet of the air duct, 112 - air inlet of the air duct, 113 - air cavity, 114 - first housing part, 115 - second housing part (1151 - limiting groove, 1152 - support rib)), 120 - heater (121 - heating part, 122 - electrical connection part, 123 - support part), 130 - fan (131 - air outlet of the fan), 140 - heat insulation block, 150 - gasket), 200 - cavity, 300 - printing platform module). Detailed implementation manners

[0039] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used in the description of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0042] Please refer to Figure 8 , the cavity auxiliary temperature control module 100 of the embodiment of the present application can be installed in the cavity 200 of the 3D printer 1000 to control the temperature of the cavity 200 of the 3D printer 1000. Please refer to Figure 1 and Figure 2, the cavity auxiliary temperature regulation module 100 includes: an air duct 110, a heater 120, and a fan 130. The heater 120 is fixed to the air duct 110. The fan 130 is fixed to the air duct 110. Among them, the fan 130 can drive air to form an air current. The air current flows through the heater 120 and then is discharged by the air duct 110. When it is necessary to heat the cavity 200, the heater 120 can be made to work. At this time, the air current discharged by the air duct 110 is the first air current. That is to say, the first air current is the air current heated by the heater 120, and the first air current can heat the cavity 200 to raise the temperature of the cavity 200. When it is necessary to dissipate heat from the cavity 200, the heater 120 can be made not to work. At this time, the air current discharged by the air duct 110 is the second air current. That is to say, the second air current is the air current not heated by the heater 120, and the second air current can cool down the cavity 200.

[0043] In some examples, the air driven by the fan 130 can be the air inside the cavity 200. That is to say, the fan 130 can drive the air inside the cavity 200 into the cavity auxiliary temperature regulation module 100, and then discharge the first air current or the second air current into the cavity 200.

[0044] In other examples, the air driven by the fan 130 can also be the air outside the cavity 200. That is to say, the fan 130 can drive the air outside the cavity 200 into the cavity auxiliary temperature regulation module 100, and then discharge the first air current or the second air current into the cavity 200.

[0045] In the cavity auxiliary temperature regulation module 100 according to the embodiment of the present application, it includes an air duct 110, and a heater 120 and a fan 130 respectively fixed to the air duct 110. The fan 130 can drive air to form an air current. After the air current flows through the heater 120, it is then discharged by the air duct 110. When the heater 120 works, the air current discharged by the air duct 110 is the first air current heated by the heater 120, and the first air current can raise the temperature of the cavity 200. When the heater 120 does not work, the air current discharged by the air duct 110 is the second air current not heated by the heater 120, and the second air current can cool down the cavity 200. The cavity auxiliary temperature regulation module 100 has both heating and heat dissipation functions, can not only effectively regulate the temperature inside the cavity 200, but also saves space and is convenient for assembly. Moreover, after the fan 130 drives air to form an air current, the air current then flows through the heater 120, which can not only protect the fan 130, improve the service life of the cavity auxiliary temperature regulation module 100, but also improve the heating efficiency.

[0046] The above-mentioned heater 120 and fan 130 can be detachably connected to the air duct 110 respectively, which is convenient for loading and unloading and reduces the production cost.

[0047] The above-mentioned heater 120 is connected to the air duct 110 through a first clamping member (not shown in the figure) and / or a first threaded member (not shown in the figure).

[0048] It can be understood that, in some examples, the above-mentioned heater 120 can be connected to the air duct 110 through a first clamping member. In some examples, the above-mentioned heater 120 can be connected to the air duct 110 through a first threaded member. In some examples, the above-mentioned heater 120 can be connected to the air duct 110 through a first clamping member and a first threaded member respectively.

[0049] The above-mentioned fan 130 is connected to the air duct 110 through a second clamping member (not shown in the figure) and / or a second threaded member (not shown in the figure).

[0050] It can be understood that, in some examples, the above-mentioned fan 130 can be connected to the air duct 110 through a second clamping member. In some examples, the above-mentioned fan 130 can be connected to the air duct 110 through a second threaded member. In some examples, the above-mentioned fan 130 can be connected to the air duct 110 through a second clamping member and a second threaded member respectively.

[0051] The above-mentioned first clamping member, second clamping member, first threaded member and second threaded member are all prior arts. The structures of the first clamping member and the second clamping member can be the same or different. The structures of the first threaded member and the second threaded member can be the same or different. As an example, the first clamping member can be a snap. As an example, the first threaded member can be a bolt and a nut that cooperate with each other. The specific structures of the first clamping member, second clamping member, first threaded member and second threaded member are not limited herein, so they will not be elaborated.

[0052] The above-mentioned air duct 110 can be arranged vertically. Please refer to Figure 2 . The fan 130 can be fixed to the lower end of the air duct 110. The air flow can be discharged from the upper end of the air duct 110. The air duct 110 is arranged vertically and the air flow is discharged from the upper end of the air duct 110, which is more conducive to the smoothly flowing out of the first air flow heated by the heater 120 from the air duct 110 and blowing towards the printing platform module 300. Moreover, since the density of hot air is less than that of cold air, it can be understood that, inside the cavity 200, the temperature of the air at the lower end of the cavity 200 is lower than that of the air at the upper end of the cavity 200. That is to say, the air at the lower end of the cavity 200 is the air with a lower temperature, and the air at the upper end of the cavity 200 is the air with a higher temperature. When the air driven by the fan 130 is the air inside the cavity 200, since the fan 130 is located at the lower end of the air duct 110, the fan 130 can drive the air with a lower temperature at the lower end of the cavity 200.

[0053] When the heater 120 is operating, the cavity auxiliary temperature control module 100 drives the relatively cold air at the lower end of the cavity 200 to form an air current. After the air current is heated by the heater 120, it forms a first air current with a relatively high temperature. After the first air current is discharged to the upper end of the cavity 200 through the cavity auxiliary temperature control module 100, the temperature inside the cavity 200 can be increased more effectively.

[0054] When the heater 120 is not operating, the cavity auxiliary temperature control module 100 drives the relatively cold air at the lower end of the cavity 200 to form an air current. The air current is not heated by the heater 120. At this time, the cavity auxiliary temperature control module 100 discharges a second air current with a relatively low temperature, which can cool the relatively hot air at the upper end of the cavity 200.

[0055] The air outlet 111 of the air duct 110 is located at the upper end of the air duct 110, and the air inlet 112 of the air duct 110 is located at the lower end of the air duct 110. Please refer to Figure 7 . The air outlet 131 of the fan 130 can be connected to the air inlet 112 of the air duct 110. The heater 120 can be connected inside the air duct 110.

[0056] The above-mentioned air duct 110 has an air cavity 113 suitable for the air current to flow through. Please refer to Figure 7 . The upper opening of the air cavity 113 can be the air outlet 111 of the air duct 110, and the lower opening of the air cavity 113 can be the air inlet 112 of the air duct 110. The width of the air cavity 113 can gradually become wider from bottom to top. As the width of the air cavity 113 increases, the cross-sectional area of the air flow will also increase correspondingly, which helps to reduce the resistance when the air current flows, thereby effectively increasing the ventilation volume.

[0057] It can be understood that in other embodiments, the air driven by the fan 130 can be the air located outside the cavity 200, which will not be elaborated here.

[0058] The air outlet 111 of the above-mentioned air duct 110 can be located on the side of the air duct 110. Please refer to Figure 6 . Please refer to Figure 8 , and the side air outlet of the cavity auxiliary temperature control module 100 makes it more convenient for the air current discharged by the cavity auxiliary temperature control module 100 to blow around the printing platform module 300, thereby effectively adjusting the temperature of the model and the printing platform module 300.

[0059] The above-mentioned air duct 110 includes a first shell part 114 and a second shell part 115. Please refer to Figure 1 . Among them, the second shell part 115 is arranged at the lower end of the first shell part 114. The first shell part 114 and the second shell part 115 are butted to form the air duct 110, which is more convenient for installing the heater 120 inside the air duct 110.

[0060] Specifically, the above-mentioned heater 120 can be disposed at the upper end inside the second housing portion 115, and the heater 120 can be restricted between the first housing portion 114 and the second housing portion 115. Please refer to Figure 7 . Please refer to Figure 3 As shown, during assembly, the heater 120 can be first installed at the upper end inside the second housing portion 115, and then the first housing portion 114 can be installed at the upper end of the second housing portion 115. This is not only convenient for installation, but also can effectively enclose the heater 120 within the air duct 110, improving the heating efficiency and avoiding contact between the heater 120 and other modules within the 3D printer 1000.

[0061] The above-mentioned second housing portion 115 can be provided with two limiting slots 1151. Please refer to Figure 1 . The two limiting slots 1151 are symmetrically provided at the upper end of the second housing portion 115, facilitating the quick positioning of the heater 120 within the second housing portion 115.

[0062] Specifically, the above-mentioned heater 120 can include a heating portion 121, an electrical connection portion 122, and two support portions 123. Please refer to Figure 1 . The two support portions 123 are respectively fixed at both ends of the heating portion 121, and the two support portions 123 respectively pass through the two limiting slots 1151. The electrical connection portion 122 passes through one of the support portions 123, and the electrical connection portion 122 is electrically connected to the heating portion 121. The electrical connection portion 122 can also be electrically connected to a power source to control the operation of the heating portion 121.

[0063] The above-mentioned cavity auxiliary temperature regulation module 100 can further include a heat insulation block 140. Please refer to Figure 3 . The heat insulation block 140 is sleeved outside the support portion 123, and the heat insulation block 140 is restricted within the limiting slot 1151 and fixed to the second housing portion 115. This not only protects the air duct 110, but also makes the assembly of the heater 120 and the air duct 110 more secure.

[0064] The above-mentioned second housing portion 115 can also be provided with support ribs 1152. Please refer to Figure 1 . There can be two support ribs 1152. The two support ribs 1152 are respectively fixed outside the second housing portion 115, and each support rib 1152 is respectively disposed at the lower end of the limiting slot 1151.

[0065] The above-mentioned cavity auxiliary temperature regulation module 100 can further include two gaskets 150. Please refer to Figure 1 . The gaskets 150 are provided in one-to-one correspondence with the heat insulation blocks 140. Each gasket 150 is respectively sleeved on the corresponding heat insulation block 140. The support ribs 1152 can be used to support the gaskets 150. Please refer to Figure 3The support ribs 1152 and the gasket 150 can also be fastened by a third threaded member. As an example, the third threaded member can be a bolt and a nut that cooperate with each other. The specific structure of the third threaded member is not limited herein, so it will not be elaborated further.

[0066] It can be understood that in other embodiments, the above heat insulation block 140 can also be directly fixed to the support rib 1152 or supported and fixed to the second housing portion 115, which will not be elaborated herein.

[0067] The above heater 120 can be a PTC (Positive Temperature Coefficient) heater.

[0068] It can be understood that in other embodiments, the above heater 120 can also be other types of heaters.

[0069] Please refer to Figure 8 , the 3D printer 1000 of the embodiment of the present application includes any one of the above cavity auxiliary temperature control modules 100. The cavity auxiliary temperature control module 100 can be fixed in the cavity 200 of the 3D printer 1000.

[0070] The above 3D printer 1000 can include two cavity auxiliary temperature control modules 100. The two cavity auxiliary temperature control modules 100 can be symmetrically arranged on both sides of the cavity 200, so as to effectively improve the temperature control efficiency and make the temperature in the cavity 200 more uniform.

[0071] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0072] The above embodiments only represent the preferred embodiments of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. Cavity auxiliary temperature control module, characterized in that: include: The air duct is formed by connecting a first shell portion and a second shell portion disposed at the lower end of the first shell portion; a heater fixed to the air duct and confined between the first shell portion and the second shell portion; and A fan, fixed to the air duct; Wherein, the fan is configured to drive air to form a wind flow, and the wind flow flows through the heater and is discharged from the air duct; When the heater is working, the wind flow discharged from the wind duct is a first wind flow, and the first wind flow is configured to increase the temperature of the cavity; When the heater is not working, the wind flow discharged from the air duct is a second wind flow, and the second wind flow is configured to cool the cavity.

2. The cavity auxiliary temperature control module according to claim 1, characterized in that: The heater and the fan are detachably connected to the air duct respectively.

3. The cavity auxiliary temperature control module according to claim 1, characterized in that: The heater is connected to the air duct via a first clamping member and / or a first threaded member; The fan is connected to the air duct via a second clamping member and / or a second threaded member.

4. The cavity auxiliary temperature adjustment module according to claim 1, characterized in that: The air duct is arranged vertically; The fan is fixed to the lower end of the air duct; The wind flow is discharged from the upper end of the air duct.

5. The cavity auxiliary temperature adjustment module according to claim 4, characterized in that: The air outlet of the air duct is located on the side of the air duct.

6. The cavity auxiliary temperature adjustment module according to claim 1, characterized in that: The heater is arranged at the inner upper end of the second shell part.

7. The cavity auxiliary temperature adjustment module according to claim 6, characterized in that: The second shell portion has two limiting grooves symmetrically opened at the upper end of the second shell portion; The heater comprises a heating part, an electrical connection part, and two support parts, wherein the two support parts are respectively fixed at two ends of the heating part and respectively penetrate the two limiting grooves, and the electrical connection part penetrates one of the support parts and is electrically connected to the heating part; The cavity auxiliary temperature adjustment module also includes a heat insulation block sleeved outside the support portion, the heat insulation block is confined in the limiting groove and fixed to the second shell portion.

8. The cavity auxiliary temperature adjustment module according to claim 1, characterized in that: The heater is a PTC heater.

9. A 3D printer, characterized in that: Comprising the cavity auxiliary temperature adjustment module according to any one of claims 1 to 8; The cavity auxiliary temperature adjustment module is fixed in the cavity of the 3D printer.

10. The 3D printer according to claim 9, characterized in that: The 3D printer includes two cavity auxiliary temperature adjustment modules; The two cavity auxiliary temperature adjustment modules are symmetrically arranged on two sides of the cavity.

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