A forming platform applied to 3D printing

Abstract

This utility model relates to the field of 3D printing equipment technology, and more particularly to a molding platform for 3D printing, including a housing, a lead screw and slide rail, a lead screw motor, a sliding stage, a cooling module, and multiple exhaust ports disposed on the side wall of the housing; wherein the cooling module includes a frame, a cooling coil, a circulating pump and a circulating pipe for supplying coolant to the cooling coil; wherein the exhaust ports are connected to a vacuum pump through a negative pressure pipe, and the exhaust end of the vacuum pump is connected to an exhaust gas treatment box. In this utility model, a cooling module is installed on the inner side wall of the housing, thereby utilizing the cooling coil to reduce the temperature inside the housing, ensuring the stability of the printed product. Furthermore, this application utilizes multiple exhaust ports on the side wall of the housing, and a vacuum pump draws harmful gases into the exhaust gas treatment box, where an activated carbon adsorption module effectively adsorbs harmful ultrafine particles and volatile organic compounds, ensuring the safety of the 3D printing operation.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing equipment technology, and in particular to a molding platform for 3D printing. Background Technology

[0002] Fused Deposition Modeling (FDM) is one method of 3D printing. In FDM, a filament of thermoplastic material is heated and melted. Simultaneously, a forming nozzle selectively applies the material onto a work platform based on a pre-loaded drawing's cross-sectional profile. After the material cools and solidifies, it forms a cross-section. Once one layer is formed, the work platform descends by a certain height (i.e., the layer thickness) to form the next layer, until the entire three-dimensional product is complete.

[0003] In existing technologies, the structure created on the forming platform of a 3D printer requires rapid cooling to solidify and prevent collapse after printing. Furthermore, the 3D printing process generates various harmful gases, primarily ultrafine particles (UFP) and volatile organic compounds (VOCs). These gases pose a potential threat to human health, potentially causing respiratory problems, skin irritation, and allergic reactions. Utility Model Content

[0004] The purpose of this invention is to provide a molding platform for 3D printing, which solves the problems of conventional molding platforms for 3D printing lacking cooling mechanisms and being difficult to handle the generation of harmful gases.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model provides a molding platform for 3D printing, including a box body, two supports disposed at the bottom of the box body, a lead screw and a slide rail disposed between the two supports, a lead screw motor for driving the lead screw, a sliding table disposed on the lead screw and the slide rail, a cooling module disposed on the inner side wall of the box body, and multiple air extraction ports disposed on the side wall of the box body.

[0007] The cooling module includes a frame disposed on the inner wall of the box, a cooling coil disposed within the frame, a circulating pump and a circulating pipe for supplying coolant to the cooling coil;

[0008] The air extraction port is connected to a vacuum pump via a negative pressure pipe, and the exhaust end of the vacuum pump is connected to an exhaust gas treatment box.

[0009] In this embodiment, a transparent observation door is further provided on the box body.

[0010] Furthermore in this embodiment, the two supports are disposed at the bottom of the housing and close to the side wall of the housing.

[0011] Furthermore in this embodiment, two slide rails are arranged in parallel between the two supports, and the two ends of the lead screw are respectively set in the middle of the supports through bearings; one end of the lead screw extends out of the side wall of the housing and is connected to the lead screw motor for transmission, and the lead screw motor is set on the side wall of the housing through a bracket.

[0012] Furthermore in this embodiment, the sliding platform is provided with a groove or through hole adapted to the slide rail, and the sliding platform is also provided with a lead screw nut seat adapted to the lead screw.

[0013] Furthermore in this embodiment, the circulating pump is connected to a coolant tank via a circulating pipe, and the outlet of the circulating pump is connected to the lower connection port of the cooling coil via a pipe. The upper connection port on the cooling coil returns the coolant to the coolant tank via the circulating pipe. A solenoid valve is installed on the circulating pipe. A temperature sensor is installed inside the coolant tank, and a phase change material for cooling is installed inside the coolant tank. The cooling coils on the two side walls of the housing are connected by a connecting pipe.

[0014] Furthermore in this embodiment, the exhaust gas treatment box is provided with a baffle channel, and the baffle channel is filled with an activated carbon module; wherein the baffle channel includes a plurality of partitions interlaced within the exhaust gas treatment box; an exhaust port is provided at the top of the exhaust gas treatment box; and a removable sealing cover is provided on the side wall of the exhaust gas treatment box for replacing the activated carbon module.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] In this invention, a cooling module is installed on the inner side wall of the chamber to reduce the temperature inside the chamber using the cooling coil, thus ensuring the stability of the printed product. Additionally, this application includes multiple exhaust ports on the side wall of the chamber, and a vacuum pump draws harmful gases into an exhaust gas treatment chamber. The activated carbon adsorption module within the exhaust gas treatment chamber effectively adsorbs harmful ultrafine particles and volatile organic compounds, ensuring the safety of the 3D printing process. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the main structure of the molding platform of this utility model applied to 3D printing;

[0019] Figure 2 This is a schematic diagram of the exhaust gas absorption mechanism of the molding platform of this utility model applied to 3D printing;

[0020] Figure 3 This is a top view schematic diagram of the molding platform of this utility model applied to 3D printing;

[0021] Figure 4 This is a schematic diagram of the cooling module structure in the molding platform of 3D printing, which is a product of this invention.

[0022] Explanation of reference numerals in the attached drawings: 1. Box body; 11. Support; 2. Sliding table; 3. Lead screw; 31. Lead screw motor; 32. Slide rail; 4. Cooling module; 41. Cooling coil; 42. Upper connection port; 43. Lower connection port; 5. Coolant tank; 6. Circulation pump; 61. Circulation pipe; 62. Solenoid valve; 63. Connecting pipe; 7. Vacuum pump; 71. Air extraction port; 72. Negative pressure pipe; 8. Exhaust gas treatment box; 81. Exhaust port; 82. Partition; 83. Activated carbon module; 84. Sealing cover. Detailed Implementation

[0023] refer to Figure 1 This embodiment discloses a molding platform for 3D printing, including a housing 1, two supports 11 installed at the bottom of the housing 1, a lead screw 3 and a slide rail 32 installed between the two supports 11, a lead screw motor 31 for driving the lead screw 3, a sliding table 2 installed on the lead screw 3 and the slide rail 32, a cooling module 4 installed on the inner side wall of the housing 1, and a plurality of air extraction ports 71 installed on the side wall of the housing 1.

[0024] In this embodiment, a transparent observation door may be designed on the housing 1.

[0025] refer to Figure 1 The two supports 11 are installed at the bottom of the housing 1 and close to the side wall of the housing 1. (See reference) Figure 1 and Figure 3 Two slide rails 32 are installed in parallel between the two supports 11. The two ends of the lead screw 3 are respectively installed in the middle of the support 11 through bearings. One end of the lead screw 3 extends out of the side wall of the housing 1 and is connected to the lead screw motor 31 for transmission. The lead screw motor 31 is installed on the side wall of the housing 1 through a bracket.

[0026] The sliding table 2 is provided with a groove or through hole that is compatible with the slide rail 32, and a lead screw nut seat that is compatible with the lead screw 3 is also installed on the sliding table 2.

[0027] In use, the lead screw 3 is driven by the lead screw motor 31, which in turn drives the sliding table 2 to slide on the slide rail 32, thereby moving the finished product on the 3D printer to the required position.

[0028] In the existing technology, the structure created by the 3D printer on the molding platform needs to be rapidly cooled to solidify and prevent collapse after printing; however, as the 3D printer works inside the housing 1, its internal temperature will gradually rise; in order to ensure that the product on the molding platform is within a suitable temperature range.

[0029] In this embodiment, reference Figure 1 and Figure 4 The cooling module 4 is installed on the inner wall of the housing 1. The cooling module 4 includes a frame installed on the inner wall of the housing 1, a cooling coil 41 installed in the frame, a circulating pump 6 and a circulating pipe 61 that provide coolant to the cooling coil 41.

[0030] In this embodiment, specifically, the circulating pump 6 is connected to the coolant tank 5 via a circulating pipe 61. The outlet of the circulating pump 6 is connected to the lower connection port 43 of the cooling coil 41 via a pipe. The upper connection port 42 on the cooling coil 41 returns the coolant to the coolant tank 5 via the circulating pipe. A solenoid valve 62 is installed on the circulating pipe 61. The cooling coils 41 on both sides of the housing 1 are connected by a connecting pipe 63, thereby using the cooling coils 41 to reduce the temperature inside the housing 1. In addition, a temperature sensor is installed inside the coolant tank 5, and the coolant tank 5 is filled with a phase change material for cooling. Specifically, a sandwich structure is designed inside the coolant tank 5, and the sandwich is filled with a phase change material to absorb heat from inside the housing 1.

[0031] In existing technologies, when the additive material used in a 3D printer is plastic, it needs to be heated and melted before it can be used for 3D printing. Therefore, various harmful gases are generated during the 3D printing process, mainly including ultrafine particles (UFP) and volatile organic compounds (VOCs). These gases pose a potential threat to human health and may cause respiratory problems, skin irritation, and allergic reactions.

[0032] refer to Figure 1 and Figure 2 Based on this, in this embodiment, the air extraction port 71 is connected to a vacuum pump 7 through a negative pressure pipe 72, and the exhaust end of the vacuum pump 7 is connected to a tail gas treatment box 8 for adsorbing the generated harmful gases or particulate matter.

[0033] refer to Figure 2The exhaust gas treatment box 8 is designed with a baffle channel, and the baffle channel is filled with an activated carbon module 83; the baffle channel includes a plurality of partitions 82 interlaced in the exhaust gas treatment box 8; these are used to increase the contact time with the activated carbon module 83 and improve the absorption effect of harmful gases; an exhaust port 81 is provided at the top of the exhaust gas treatment box 8 for discharging the air after filtering harmful gases; a removable sealing cover 84 is bolted to the side wall of the exhaust gas treatment box 8 for replacing the activated carbon module 83.

[0034] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A forming platform for use in 3D printing, characterized in that: It includes a housing, two supports at the bottom of the housing, a lead screw and a slide rail between the two supports, a lead screw motor for driving the lead screw, a sliding table on the lead screw and slide rail, a cooling module on the inner side wall of the housing, and multiple air extraction ports on the side wall of the housing. The cooling module includes a frame disposed on the inner wall of the box, a cooling coil disposed within the frame, a circulating pump and a circulating pipe for supplying coolant to the cooling coil; The air extraction port is connected to a vacuum pump via a negative pressure pipe, and the exhaust end of the vacuum pump is connected to an exhaust gas treatment box.

2. The forming platform for 3D printing according to claim 1, characterized in that: The enclosure is equipped with a transparent observation door.

3. The forming platform for 3D printing of claim 2, wherein: The two supports are located at the bottom of the housing and close to the side wall of the housing.

4. The forming platform for 3D printing according to claim 3, characterized in that: Two slide rails are arranged in parallel between the two supports. The two ends of the lead screw are respectively set in the middle of the support through bearings. One end of the lead screw extends out of the side wall of the housing and is connected to the lead screw motor for transmission. The lead screw motor is set on the side wall of the housing through a bracket.

5. The forming platform for 3D printing of claim 4, wherein: The sliding platform is provided with a groove or through hole that matches the slide rail, and the sliding platform is also provided with a lead screw nut seat that matches the lead screw.

6. The forming platform for 3D printing of claim 1, wherein: The circulating pump is connected to a coolant tank via a circulating pipe. The outlet of the circulating pump is connected to the lower connection port of the cooling coil via a pipe. The upper connection port on the cooling coil returns the coolant to the coolant tank via the circulating pipe. A solenoid valve is installed on the circulating pipe. A temperature sensor is installed inside the coolant tank, and a phase change material for cooling is also installed inside the coolant tank. The cooling coils on both sides of the enclosure are connected by a connecting pipe.

7. The forming platform for 3D printing of claim 1, wherein: The exhaust gas treatment box is equipped with a baffle channel, and the baffle channel is filled with an activated carbon module; The baffle channel includes multiple partitions interlaced within the exhaust gas treatment box; an exhaust port is provided at the top of the exhaust gas treatment box; and a removable sealing cover is provided on the side wall of the exhaust gas treatment box for replacing the activated carbon module.

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