WO2024055652A1

WO2024055652A1 - Photo-curing 3d printing device

Info

Publication number: WO2024055652A1
Application number: PCT/CN2023/099997
Authority: WO
Inventors: 陈春; 黄国华
Original assignee: 深圳市创想三维科技股份有限公司
Priority date: 2022-09-15
Filing date: 2023-06-13
Publication date: 2024-03-21
Also published as: CN218256805U

Abstract

Provided in the embodiments of the present application is a photo-curing 3D printing device, by means of which liquid photo-curing resin is cured by means of light irradiation to achieve 3D printing. The photo-curing 3D printing device comprises: a body cover, which defines an internal space; and a first circulation assembly, which is arranged in the internal space for heating and filtering the gas in the internal space, wherein a first gas cavity is defined inside the first circulation assembly; the first circulation assembly comprises a first gas driving unit, a heating unit and a first filtering unit, which are arranged in the first gas cavity and spaced apart from each other; and the first gas driving unit is configured such that the gas outside the first gas cavity is sucked into the first gas cavity, passes through the heating unit and the first filtering unit, and is then delivered to the outside of the first gas cavity. The photo-curing 3D printing device can perform filtration, purification and temperature control for the internal gas environment.

Description

Light curing 3D printing equipment

This application requires the priority of the Chinese patent submitted to the China Patent Office on September 15, 2022, with the application number 202222440781.9 and the application name "Light Curing 3D Printing Equipment".

Technical field

This application relates to the field of 3D printing, and in particular to a light-curing 3D printing device.

Background technique

Light-curing 3D printers generally use a light source in a specific wavelength range to irradiate liquid light-curing resin and trigger a photochemical reaction, so that the light-curing resin in the area illuminated by the light source is solidified from the liquid. After solidification layer by layer, the object to be formed can be obtained. Since liquid light-curing resin has a certain volatility, it will produce a large odor and release some gases harmful to the human body during use. The main component is acrylic acid molecules, so long-term use will cause environmental pollution and may affect the human body. healthy.

Existing light-curing 3D printers generally use a sealable printer structure to prevent harmful gases in the internal space of the fuselage from being released outward. Since it is difficult to completely seal the casing of a light-curing 3D printer, and you need to open the casing to add liquid light-curing resin raw materials before starting printing, and you need to open the casing to take out the printed product after printing is completed, these operations will lead to accumulation. Harmful gases inside the fuselage shell are directly released into the outside air, polluting the outside air and possibly causing damage to human health. Moreover, during the photocuring process, the ambient temperature has a direct impact on the printing effect. How to quickly and uniformly regulate the ambient temperature while processing harmful components in the gas is what those skilled in the art need to consider.

Contents of the invention

In order to solve the problems in the prior art, embodiments of the present application provide a light-curing 3D printing device, which can filter, purify and control the temperature of the internal gas environment.

Embodiments of the present application provide a light-curing 3D printing device, which is used to solidify and shape liquid light-curing resin through illumination to achieve 3D printing. The light-curing 3D printing device includes:

The fuselage cover limits the internal space;

A first circulation component is located in the internal space and used to heat and filter the gas in the internal space;

Wherein, the first circulation component defines a first air chamber inside, the first circulation component includes a first gas driving unit, a heating unit and a first filtering unit, the first gas driving unit, the heating unit and the The first filter unit is spaced in the first air chamber, and the first gas driving unit It is used to inhale the gas outside the first air chamber into the first air chamber, and transmit it to the outside of the first air chamber after passing through the heating unit and the first filter unit.

In a possible implementation, the heating unit includes a hollow bracket and an electric heating wire. The electric heating wire is arranged around the hollow bracket. The electric heating wire is used to generate heat after being energized to heat the gas.

In a possible implementation, the heating unit is provided between the first gas driving unit and the first filter unit, the first filter unit includes a first filter element, and the first filter unit is The gas entering the first air chamber is discharged from the first air chamber after passing through the first filter element.

In a possible implementation, the first gas driving unit further includes a front shell, a rear shell and a top shell, and the front shell snaps with the rear shell to accommodate the first gas driving unit and the top shell. Heating unit, the top shell is connected to one side of the front shell and the rear shell after being buckled to accommodate the first filter unit.

In a possible implementation, the first gas driving unit further includes an integrated circuit board, the integrated circuit board is connected to the front shell and is disposed in the first air chamber, and the first gas driving unit The unit and the heating unit are electrically connected to the integrated circuit board.

In a possible implementation, the light-curing 3D printing device further includes a second circulation component that communicates the internal space with the outside of the light-curing 3D printing device. The second circulation component The component is used to filter the gas in the internal space and discharge it to the outside of the light-curing 3D printing device.

In a possible implementation, the second circulation component is fixed to the fuselage cover, the second circulation component includes a second gas driving unit, a second filter unit and an exhaust unit, and the second filter The unit is connected to the internal space, the second gas driving unit is connected to the second filter unit, the second gas driving unit is connected to the exhaust unit, and the exhaust unit is connected to the light curing unit. The exterior of a 3D printed device.

In a possible implementation, the second gas driving unit includes a blowing fan and a fixing bracket. The blowing fan is connected to the fuselage cover through the fixing bracket. The blowing fan is connected to the fuselage cover through the fixing bracket. The exhaust unit is connected, the second filter unit includes a second filter lower shell, a second filter element and a second filter upper shell, the second filter lower shell is connected to the fuselage cover, the second filter upper shell It is detachably connected to the second filter lower shell to accommodate the second filter element.

In a possible implementation, the fuselage cover includes a base and an upper cover, the base and the upper cover are detachably buckled, and the upper cover is buckled with the base and defines a first accommodation space. , the first circulation component is located in the first accommodation space; the light-curing 3D printing device also includes a printing platform and a printing component located in the first accommodation space, the printing platform and the The printing components are respectively connected to the base, the first accommodation space is the molding space of the light-curing 3D printing device, and the printing components cooperate with the printing platform to perform 3D printing.

In a possible implementation, the base defines a second accommodation space inside, the first accommodation space is connected with the second accommodation space, and the internal space includes the first accommodation space and the second accommodation space. The mentioned Two accommodation spaces, the printing assembly defines a third accommodation space, the third accommodation space is connected with the second accommodation space and the first accommodation space, and the external part of the light-curing 3D printing device The gas can reach the first accommodation space via the second accommodation space and the third accommodation space in sequence.

Compared with the existing technology, the light-curing 3D printing equipment of the present application circulates the gas in the internal space through the first circulation component through the first gas driving unit. During the circulation process, the gas passing through the first circulation component can be circulated by the second circulation component. A filter unit filters and purifies, and at the same time, the gas passing through the first circulation component can also be heated by the heating unit. The light-curing 3D printing equipment of this application uses a first circulation component integrated with heating and filtering functions to quickly and efficiently purify and heat the gas in the internal space through gas circulation.

Description of drawings

Figure 1 is a three-dimensional schematic diagram of the light-curing 3D printing equipment of the present application.

Figure 2 is a three-dimensional exploded schematic view of the light-curing 3D printing equipment of the present application.

Figure 3 is a schematic three-dimensional view of the light-curing 3D printing equipment of the present application after the cover is hidden.

Figure 4 is a three-dimensional schematic view of the light-curing 3D printing device of the present application after hiding the upper cover and the first circulation component.

Figure 5 is a schematic three-dimensional view of the first circulation component of the light-curing 3D printing device of the present application.

Figure 6 is a three-dimensional schematic view of the first circulation component of the light-curing 3D printing device of the present application.

Figure 7 is an exploded perspective view of the first circulation component of the light-curing 3D printing device of the present application.

Figure 8 is a three-dimensional exploded schematic view of the first circulation component of the light-curing 3D printing device of the present application from another angle.

FIG. 9 is a three-dimensional exploded schematic diagram of the second circulation component included in the light-curing 3D printing device of the present application.

Description of main component symbols:
Light curing 3D printing equipment 1
Body cover 10
Interior space 100
First accommodation space 101
Second accommodation space 102
Third accommodation space 103
Upper cover 104
Base 105
Medium plate 106
Card position edge 1061
Through hole 1062
Side panels 107
Front panel 108
Display area 1081
Rear panel 109
First loop component 11
First air chamber 110
First filter unit 111
First filter element 112
First gas drive unit 113
Heating unit 114
Hollow bracket 115
Heating wire 116
Front shell 117
Back case 118
Top case 119
Integrated circuit board 130
First button 131
Second button 132
Digital tube 133
Label Stickers 134
Internal bracket 138
Bottom case 139
Second loop component 12
Second filter unit 121
Second filter upper shell 1211
Second filter lower shell 1212
Second filter element 1213
Second gas drive unit 123
Blower fan 124
Fixing bracket 125
Exhaust unit 126
Exhaust port 127
Aluminum foil duct 128
Seal ring 129
Printing platform 14
Hopper 141
Fixing bolt 142
Printing components 15
Column 151
Opening structure 1510
Driver module 152
Molding module 153
Hoarding 154
Top plate 155
Hanging holes 156
Lead screw 157
Connection unit 158
Forming platform 159
DC power hole 161
TYPE-C power hole 162
Heating unit socket 163
Air inlet temperature sensor 164
Air outlet temperature sensor 165

The following specific embodiments will further describe the present application in conjunction with the above-mentioned drawings.

Detailed ways

The following description will refer to the accompanying drawings to more fully describe the present application. Exemplary embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the example embodiments set forth herein. These exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Similar reference numbers indicate identical or similar components.

The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when used herein, "comprises" and/or "includes" and/or "has", an integer, a step, an operation, a component and/or a component, does not exclude the presence or addition of one or more other features, Regions, integers, steps, operations, components and/or groups thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Furthermore, unless clearly defined in the context, terms such as those defined in general dictionaries should be interpreted to have meanings consistent with their meanings in the relevant art and the content of this application, and will not be interpreted as having an idealized or overly formal meaning.

The following content will describe exemplary embodiments in conjunction with the accompanying drawings. It should be noted that the components depicted in the reference drawings are not necessarily shown to scale; instead, the same or similar components will be given the same or similar reference numerals or similar technical terms.

Specific embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

As shown in Figures 1 to 9, embodiments of the present application provide a light-curing 3D printing device 1, which is used to solidify liquid light-curing resin to achieve 3D printing through illumination. The light-curing 3D printing device 1 includes a body cover. 10 and the first circulation component 11. The fuselage cover 10 defines an internal space 100; the first circulation component 11 is disposed in the internal space 100 and is used to heat and filter the gas in the internal space 100; wherein, the first circulation component 11 defines a first air chamber 110 inside, and the first circulation component 11 The assembly 11 includes a first gas driving unit 113, a heating unit 114 and a first filtering unit 111. The first gas driving unit 113, the heating unit 114 and the first filtering unit 111 are spaced apart in the first air chamber 110. The unit 113 is used to inhale the gas outside the first air chamber 110 into the first air chamber 110 and transmit it to the outside of the first air chamber 110 after passing through the heating unit 114 and the first filter unit 111 .

Compared with the prior art, the light-curing 3D printing device 1 of the present application uses the first gas driving unit 113 to circulate the gas in the internal space 100 through the first circulation component 11 . During the circulation process, the gas passing through the first circulation component 11 can be filtered and purified by the first filter unit 111 , and at the same time, the gas passing through the first circulation component 11 can also be heated by the heating unit 114 . The light-curing 3D printing device 1 of the present application uses a first circulation component 11 integrated with heating and filtering functions to quickly and efficiently purify and heat the gas in the internal space 100 through gas circulation.

It can be understood that the first circulation component 11 adjusts the molding environment temperature of the light-curing 3D printing device 1 by heating the gas in the internal space 100 . For example, the gas in the internal space 100 can be heated to 70 to 80° C. and then transferred to the photo-curing resin to adjust the temperature of the liquid photo-curing resin, especially the temperature of the upper surface of the liquid photo-curing resin. The optimal printing temperature range for light-curing resin is 35 to 45°C. If the temperature is too low, the curing reaction of the light-curing resin will slow down, resulting in a longer curing time. It is necessary to increase the curing time of each layer. If the curing time is not increased, the curing time will be longer. If you continue to print, the next layer may be printed before the previous layer is completely cured, causing the model to delaminate; if the temperature is too high, the curing reaction of the light-curing resin will be very fast, and the stress in the model cannot be completely released, causing the model to crack later. At the same time, they should also be matched to reduce the curing time of each layer. Mismatching will also lead to model delamination.

In one embodiment, the fuselage cover 10 includes an upper cover 104 and a base 105. The upper cover 104 and the base 105 are detachably engaged. The upper cover 104 and the base 105 are engaged and define the first accommodation space 101. The first circulation component 11 is located in the first accommodation space 101.

In one embodiment, the upper cover 104 may be in the shape of a hollow semi-enclosed upper cover. In this embodiment, the upper cover 104 may have a wedge-shaped structure with a smaller top and a larger bottom. That is, the cross-sectional area of the end of the upper cover 104 away from the base 105 is smaller, and the cross-sectional area of the end of the upper cover 104 that engages with the base 105 is smaller. larger to lower the center of gravity of the upper cover 104 and enhance the stability of the fuselage cover 10 .

In one embodiment, the base 105 includes a central portion that cooperates with the upper cover 104 to define the first accommodation space 101 . The base 105 also includes two side panels 107 , a front panel 108 and a rear panel 109 located outside the interior space 100 and surrounding the middle panel 106 .

In this embodiment, the middle plate 106 can also be provided with latching edges 1061 , and the latching edges 1061 can be provided at the four corners of the middle plate 106 . The upper cover 104 can be fastened to the base 105 through the stepped latching edges 1061 . Try to form an internal space 100 with better sealing performance. Two side plates 107 are spaced on opposite sides of the base 105. The front plate 108 and the rear plate 109 are spaced on the other two sides of the base 105. The front plate 108 and the rear plate 109 are respectively located on the two side plates 107. between. The front panel 108 can be provided with a display area 1081. The display area 1081 can be a touch display module integrated with display and touch functions. The display area 1081 can be used to display relevant information of the light-curing 3D printing device 1 or allow the operator to pass The display area 1081 can be operated by touch. Furthermore, the display area 1081 can also be integrated with an existing processor module that can perform digital operations.

In one embodiment, the base 105 defines a second accommodation space 102 inside. The first accommodation space 101 is connected with the second accommodation space 102. The second accommodation space 102 can be opened on the side panel 107 and/or the rear panel. The breathable structure (such as pores, etc.) on 109 is connected with the external gas environment of the light-curing 3D printing device 1 .

In one embodiment, the light-curing 3D printing device 1 further includes a printing platform 14 and a printing component 15 located in the first accommodation space 101. The printing platform 14 and the printing component 15 are respectively connected to the base 105. The first accommodation space 101 is the molding space of the light-curing 3D printing device 1, and the printing component 15 cooperates with the printing platform 14 to perform 3D printing. Furthermore, the area between the printing platform 14 and the printing assembly 15 may be the molding area of the light-curing 3D printing device 1 .

In one embodiment, the printing platform 14 may include a material trough 141 and a fixing bolt 142. The material trough 141 may be used to accommodate the aforementioned liquid light-curing resin. The two fixing bolts 142 are spaced on both sides of the material trough 141. The material trough 141 It is detachably connected to the base 105 through a fixing bolt 142 . The material trough 141 can be fixed on the surface of the middle plate 106 by tightening the fixing bolt 142, and the opening of the material trough 141 faces away from the middle plate 106 so that the light emitted by the printing assembly 15 can shine into the material trough 141. The material trough 141 and the base 105 can be detached by loosening the fixing bolt 142, so that the material trough 141 can be taken out from the inner space 100 for loading or cleaning.

In one embodiment, the printing assembly 15 may include a column 151 , a driving module 152 and a forming module 153 . The column 151 is connected to the base 105 and extends toward the middle plate 106 away from the second accommodation space 102 . The forming module 153 The driving module 152 is connected to the column 151, and the driving module 152 drives the molding module 153 closer to or farther away from the printing platform 14 to complete 3D printing. The driving module 152 and the molding module 153 can be electrically connected to the display area 1081 and integrated with the processor therein through conventional electrical connection units such as wires or flexible circuit boards.

In one embodiment, in addition to the first accommodating space 101 and the second accommodating space 102, the internal space 100 also includes a third accommodating space 103. The column 151 of the printing assembly 15 defines a third accommodation space 103. The third accommodation space 103 is connected with the second accommodation space 102 and the first accommodation space 101. The gas outside the light-curing 3D printing device 1 can pass through the second accommodation space in turn. The accommodation space 102 and the third accommodation space 103 arrive at the first accommodation space 101.

In this embodiment, the upright column 151 at least includes a hoarding 154 and a top plate 155. The hoarding 154 is connected to the base 105 and extends away from the base 105. The top plate 155 is connected to the end of the hoarding 154 away from the base 105. The hoarding 154 A hanging hole 156 for hanging the first circulation component 11 may be opened on the upper side. The driving module 152 can be disposed in the third accommodation space 103. The driving module 152 can include a screw rod 157 and a driving motor (not shown) for driving the screw rod 157. The driving motor can pass through a coupling. (not shown) is drivingly connected to the screw rod 157 . It can be understood that the drive motor and the coupling can be common and practical structures in the prior art (for example, the drive motor can be a stepper motor), and the drive motor and the coupling are used to cooperate with each other. The driving screw 157 drives the forming module 153 to move.

In this embodiment, the molding module 153 may include a connecting unit 158 and a molding platform 159. One end of the connecting unit 158 extends into the third accommodation space 103 and is drivingly connected to the screw rod 157, and the other end of the connecting unit 158 is connected to the molding platform. 159 is connected, and the screw rod 157 drives the forming platform 159 to be movable and immersed in the material tank 141. The base 105 can also be provided with a molding light source (not shown in the figure), which irradiates a molding light beam toward the bottom of the trough 141, and the molding light beam passes through a screen (not shown in the figure) installed at the middle plate 106, so The pattern to be printed is displayed on the screen, and the forming beam passes through the pattern and projects the light spot onto the liquid light-curing resin in the trough 141. At the same time, the forming platform 159 is immersed in the liquid light-curing resin under the control of the screw rod 157. to complete the molding printing.

In this embodiment, the side of the column 151 facing the molding module 153 may have an opening structure 1510 to avoid interference with the movement of the connection unit 158; in other embodiments, the column 151 may also be provided with an opening structure 1510 corresponding to the side thereof. A cover structure (not shown) covering the opening structure 1510 to enhance the sealing of the first accommodation space 101 and reduce the air flow interaction speed between the first accommodation space 101 and the third accommodation space 103. This embodiment Bottom, the top plate 155 is provided with a corresponding breathable structure, and the cover plate structure should not affect the screw rod 157 driving the molding module 153.

In one embodiment, the first circulation component 11 also includes a front shell 117, a rear shell 118 and a top shell 119. The front shell 117 and the back shell 118 are fastened to accommodate the first gas driving unit 113 and the heating unit 114. The top shell 119 It is connected to one side of the fastened front shell 117 and the rear shell 118 to accommodate the first filter unit 111 .

In this embodiment, the front shell 117 and the back shell 118 can be fixed through sheet metal flanges and countersunk screws. After the front shell 117 and the back shell 118 are fixed, they form a hollow columnar shape with both ends open; the top shell 119 is buckled on The front shell 117 and the rear shell 118 are at the same end. The top shell 119 can cooperate with the buckles at the corresponding positions of the front shell 117 and the rear shell 118 through the raised buckles at the bottom to achieve a fast disassembly and fixation form to facilitate quick replacement of the second shell. A filter unit 111. The front shell 117 , the rear shell 118 and the top shell 119 cooperate with each other to form the first air chamber 110 . The first gas driving unit 113 and the heating unit 114 are disposed in the hollow column formed by the front shell 117 and the rear shell 118. The first gas driving unit 113 is disposed on the side away from the top shell 119, and the heating unit 114 is disposed close to the top. Shell 119 side.

In one embodiment, the first circulation component 11 further includes an inner bracket 138 and a bottom shell 139. The front shell 117 and the rear shell 118 can be connected to the inner bracket 138. The heating unit 114 and the first gas driving unit 113 can be connected to the inner bracket. 138. The heating unit 114 can be clamped in the internal bracket 138. The first filter unit 111 The first gas driving unit 113 can be connected to the opposite sides of the inner bracket 138 . The bottom shell 139 can be connected to the front shell 117 and the rear shell 118 . The bottom shell 139 is located on the side of the first gas driving unit 113 away from the heating unit 114 . In this embodiment, the bottom case 139 can be fixedly connected to the front case 117 and the rear case 118 through countersunk screws.

In this embodiment, the rear shell 118 may be provided with a protruding structure such as a plug screw, so that the rear shell 118 can cooperate with the hanging hole 156 to achieve detachable connection between the first circulation component 11 and the upright column 151 . It can be understood that the first circulation component 11 is hung on the column 151, and the first circulation component 11 is placed close to the molding area, so that the first gas driving unit 113 (the air inlet end of the first circulation component 11) is close to the material trough. 141, bring the first filter unit 111 (the air outlet end of the first circulation component 11) close to the molding module 153, so as to directly and more efficiently purify, heat up and control the molding area.

In one embodiment, the heating unit 114 includes a hollow bracket 115 and an electric heating wire 116. The electric heating wire 116 is arranged around the hollow bracket 115. The electric heating wire 116 is used to generate heat after being energized to heat the gas. The heating unit 114 may also include an overcurrent protection switch (not shown), which may be arranged in series with the electric heating wire 116 .

In this embodiment, the hollow bracket 115 can be a hollow three-dimensional frame with a cross-shaped or tic-shaped cross section and extending in the same extension direction as the front shell 117 and the rear shell 118 . The electric heating wire 116 is rotated around the periphery of the hollow bracket 115 . The hollow brackets arranged in a cross shape or a grid shape can improve the efficiency of air flow and allow the air flow to circulate smoothly when passing through the heating unit 114 .

In one embodiment, the heating unit 114 is disposed between the first gas driving unit 113 and the first filter unit 111. The first filter unit 111 includes a first filter element 112. The first filter unit 111 is used to allow the gas to enter the first air chamber. 110 gas passes through the first filter element 112 and then is discharged from the first air chamber 110 .

In this embodiment, the first filter element 112 may be an activated carbon filter element with a multi-layer stacked structure or a three-dimensional porous structure, and the shape of the first filter element 112 may be cubic to fit the top case 119 . In other embodiments, the first filtration unit 111 may also include a reinforced filter membrane for wrapping the first filter element 112 to improve the filtration performance of the first filtration unit 111 .

In this embodiment, the first gas driving unit 113 is an axial flow fan, and the first gas driving unit 113 generates air flow along the axial direction of the first circulation assembly 11 . After the first gas driving unit 113 is started, the airflow outside the first air chamber 110 is sucked into the first air chamber 110 through the ventilation holes of the bottom case 139 , and the airflow is further sucked into the first gas driving unit 113 and driven by the first gas. The unit 113 is pushed out, and the air flow then passes through the hollow bracket 115 of the heating unit 114 and is heated by the electric heating wire 116. The air flow then passes through the first filter unit 111 and is filtered by the first filter element 112 so that the odor gas molecules in the air flow are filtered (adsorbed or decomposed). ), the airflow passes through the first filter unit 111 and is discharged to the first accommodation space 101 through the opening on the top case 119 .

In one embodiment, the first gas driving unit 113 further includes an integrated circuit board 130. The integrated circuit board 130 is connected to the front case 117 and is disposed in the first air chamber 110. The first gas driving unit 113 and the heating unit 114 are integrated with Circuit board 130 is electrically connected.

In one embodiment, the surface of the integrated circuit board 130 facing the outside of the first circulation component 11 is provided with a first button 131, the second button 132 and the digital tube 133. The surface of the integrated circuit board 130 facing the outside of the first circulation component 11 may be provided with various connection ports and/or auxiliary units, such as conventional and practical DC power holes 161, TYPE-C power holes 162, and cooling units in the prior art. Fan (not shown), heating unit socket 163, air inlet temperature sensor 164, air outlet temperature sensor 165. Among them, the DC power hole 161 can be the power interface of the integrated circuit board 130, and the TYPE-C power hole 162 can be an integrated circuit. The board 130 is an interface for electrical signal interaction with the display area 1081. The cooling fan can be a cooling unit for cooling the integrated circuit board 130. The heating unit socket 163 can be an electrical connection between the heating unit 114 and the integrated circuit board 130 and for heating. The electrical interface for powering the unit 114, the air inlet temperature sensor 164 and the air outlet temperature sensor 165 may be temperature sensing units (such as electronic thermometers) spaced in the first air chamber 110 to assist in temperature monitoring.

In this embodiment, the digital tube 133 can be used to display four digits; among them, the two digits on the left side of the digital tube 133 can be used to display the temperature of the air inlet close to the first gas driving unit 113 in real time, which depends on the air inlet. Real-time temperature; the two digits on the right side of the digital tube 133 can be used to display the preset temperature of the air outlet of the heating unit 114 .

In this embodiment, the first button 131 can be a "+" plus sign function button, and the second button 132 can be a "-" minus sign function button. By pressing the first button 131 and the second button 132, the digital tube 133 can be adjusted. The two digits on the right display the preset temperature. By lightly pressing the first button 131 or the second button 132, the two digits on the right side of the digital tube 133 can be raised or lowered by 1°C. By pressing the first button 131 or the second button 132 for about 3 seconds, the current setting can be confirmed. temperature and start the heating unit 114. Long pressing the first button 131 or the second button 132 for about 10 seconds can directly raise the preset temperature displayed by the two digits on the right side of the integer tube 133 to 99°C or cool it to room temperature.

In one embodiment, the first gas driving unit 113 further includes a label sticker 134. The label sticker 134 can be attached to the surface of the integrated circuit board 130 facing the outside of the first circulation component 11 to cover the countersunk screws or other components used for connection. Splicing traces, thereby beautifying the appearance. The surface of the label sticker 134 can also be provided with a "+" plus sign icon corresponding to the first button 131 and a "-" minus sign icon corresponding to the second button 132. Those skilled in the art can understand that other labels can also be provided on the label sticker 134. Informative text or graphic logo.

In one embodiment, the light-curing 3D printing device 1 further includes a second circulation component 12 . The second circulation component 12 connects the internal space 100 with the outside of the light-curing 3D printing device 1 . The second circulation component 12 is used to circulate the internal space 100 The gas in the filter is filtered and discharged to the outside of the light-curing 3D printing device 1 .

In one embodiment, the second circulation component 12 is fixed to the fuselage cover 10. The second circulation component 12 includes a second gas driving unit 123, a second filter unit 121 and an exhaust unit 126. The second filter unit 121 is connected to the internal space. 100 is connected, the second gas driving unit 123 is connected with the second filter unit 121 , the second gas driving unit 123 is connected with the exhaust unit 126 , and the exhaust unit 126 is connected to the outside of the light curing 3D printing device 1 .

In one embodiment, the second gas driving unit 123 includes a blowing fan 124 and a fixing bracket 125. The air fan 124 is connected to the fuselage cover 10 through the fixing bracket 125, and the blower fan 124 is connected to the exhaust unit 126. The second filter unit 121 includes a second filter upper shell 1211, a second filter lower shell 1212, and a second filter element 1213. The second lower filter housing 1212 is connected to the fuselage cover 10 , and the second upper filter housing 1211 and the second lower filter housing 1212 are detachably connected to accommodate the second filter element 1213 .

Furthermore, the second circulation component 12 is disposed in the first accommodation space 101 and is connected to the middle plate 106 . The second circulation component 12 can be disposed on any one of the four corners of the base 105 .

In this embodiment, the second filter unit 121 is provided in the first accommodation space 101 , and the second gas driving unit 123 is provided in the second accommodation space 102 . The middle plate 106 is provided with a through hole 1062 , which penetrates the middle plate 106 and connects the first accommodation space 101 and the second accommodation space 102 . A sealing ring 129 is provided at the through hole 1062 . The second filter lower shell 1212 is connected to the middle plate 106 and is clamped at the through hole 1062. The fixing bracket 125 is connected to the middle plate 106 and is clamped at the through hole 1062. The sealing ring 129 is at least disposed between the second filter lower shell 1212 and The connection point of the middle plate 106 can further be provided at the connection point between the fixing frame 125 and the middle plate 106 to improve the sealing between the first accommodation space 101 and the second accommodation space 102 and prevent the first accommodation space from The harmful gas to be treated in 101 directly overflows without passing through the second circulation component 12.

In this embodiment, the second upper filter housing 1211 and the second lower filter housing 1212 are coupled to form a hollow cylindrical shape, and the cylindrical second filter element 1213 is disposed between the second upper filter housing 1211 and the second lower filter housing 1212 middle. The second upper filter housing 1211 and the second lower filter housing 1212 can be fixed with an L-shaped rotating buckle, allowing quick disassembly and assembly by rotating the second upper filter housing 1211 to facilitate rapid replacement of the second filter element 1213 containing activated carbon. .

In this embodiment, the blowing fan 124 can be an existing blowing fan shaped like a snail shell. The air inlet end of the blowing fan 124 is connected to the hollow fixing frame 125 to form a gas circuit. The air outlet end of the blowing fan 124 It is connected with the exhaust interface 127 and forms a gas circuit. The exhaust interface 127 is further connected with the aluminum foil air duct 128 and forms a gas circuit. The aluminum foil air duct 128 adopts a foldable structure, and the length of 1 meter in the extended state can be compressed to 20 Centimeters in length, minimizing space usage. The blower fan 124 is started to draw the gas in the first accommodation space 101 through the second filter unit 121. After filtering, it is discharged to the outside of the light-curing 3D printing device 1 through the exhaust unit 126 to keep the air flow from the molding space. It flows to the outside of the light-curing 3D printing device 1 through the second circulation component 12, so that harmful gases will not escape due to excessive air pressure in the molding space due to the gas generated during the printing process. It can be understood that the exhaust interface 127 may be substantially vertically connected to the second filter unit 121 .

In the light-curing 3D printing device 1 of the present application, the first circulation component 11 realizes controllable temperature of the molding space. After the axial flow fan at the bottom of the first circulation component 11 reversely draws and heats the air, it passes through the first filter unit 111 at the top. Eliminate odorous gases and achieve the purpose of heating and purifying the air inside the molding space. The second circulation component 12 draws out the odorous gas from the molding space through the blower fan 124 installed at the bottom of the middle plate 106. After filtering the odorous gas through the second filter unit 121, it is then guided and exhausted to the outside through the aluminum foil air duct 128 to purify the air inside the molding space of the machine. the goal of. Through the first circulation component 11 and the second circulation component 12 Together, they can effectively filter harmful gases, such as acrylic acid molecules, formed in the molding space, excluding clean and harmless gases outside the printer, and solve the problem of harmful gases leaking from existing sealed 3D printers. At the same time, in a low-temperature environment, the internal temperature of the molding space can be heated to keep the resin at the optimal working temperature and ensure the printing effect. In addition, at least one of the first circulation component 11 and the second circulation component 12 can be turned on according to actual usage requirements. For example, when printing in an area with poor ventilation environment, only the first circulation component 11 can be turned on. When printing in an area with poor ventilation environment, When printing a good area, only the second circulation component 12 can be turned on. If further temperature control is required, the first circulation component 11 can also be turned on at the same time.

Hereinabove, specific embodiments of the present application have been described with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that various changes and substitutions can be made to the specific implementations of the present application without departing from the spirit and scope of the present application. These changes and substitutions all fall within the scope limited by this application.

Claims

A light-curing 3D printing device, characterized in that the light-curing 3D printing device includes:

The fuselage cover limits the internal space;

A first circulation component is located in the internal space and used to heat and filter the gas in the internal space;

Wherein, the first circulation component defines a first air chamber inside, the first circulation component includes a first gas driving unit, a heating unit and a first filtering unit, the first gas driving unit, the heating unit and the The first filter unit is spaced in the first air chamber, and the first gas driving unit is used to suck the gas outside the first air chamber into the first air chamber and pass it through the heating unit and the first filter unit and then transmitted to the outside of the first air chamber.
The light-curing 3D printing equipment of claim 1, wherein the heating unit includes a hollow bracket and an electric heating wire, the electric heating wire is arranged around the hollow bracket, and the electric heating wire is used to generate heat after being powered on. to heat the gas.
The light-curing 3D printing device of claim 1, wherein the heating unit is provided between the first gas driving unit and the first filter unit, and the first filter unit includes a first filter element. , the first filter unit is used to allow the gas entering the first air chamber to pass through the first filter element and then be discharged from the first air chamber.
The light-curing 3D printing device according to claim 1, wherein the first gas driving unit further includes a front shell, a rear shell and a top shell, the front shell and the rear shell snap together to accommodate the The first gas driving unit and the heating unit, the top shell is connected to one side of the fastened front shell and the rear shell to accommodate the first filter unit.
The light-curing 3D printing device according to claim 1, characterized in that the light-curing 3D printing device further includes a printing platform and a printing component, the printing component includes a column and a molding module, the column and the printing module The platform is connected to the fuselage cover, the molding module is spaced apart from the printing platform, and the first circulation component is detachably connected to the column, so that the first gas driving unit is close to the printing platform Set up so that the first filter unit is set close to the molding module.
The light-curing 3D printing device according to claim 1, characterized in that the light-curing 3D printing device further includes a second circulation component, the second circulation component communicates with the internal space and the light-curing 3D printing device. outside, the second circulation component is used to filter the gas in the internal space and discharge it to the outside of the light-curing 3D printing device.
The light-curing 3D printing device of claim 6, wherein the body cover includes a base and an upper cover, and the base and the upper cover are removably engaged to define the first accommodation space, so The first circulation component and the second circulation component are provided in the first accommodation space, the base includes a middle plate that cooperates with the upper cover to define the first accommodation space, and the second circulation assembly The circulation component is connected to the middle plate.
The light-curing 3D printing device of claim 6, wherein the second circulation component is fixed to the fuselage cover, and the second circulation component includes a second gas driving unit, a second filter unit and an exhaust unit. gas unit, the second filter unit is connected to the internal space, the second gas driving unit is connected to the second filter unit, the second gas driving unit is connected to the exhaust unit, and the exhaust unit is connected to the exhaust unit. The gas unit is connected to the outside of the light-curing 3D printing device.
The light-curing 3D printing equipment of claim 8, wherein the second gas driving unit includes a blower fan and a fixing bracket, and the blowing fan is connected to the fuselage cover through the fixing bracket, The blower fan is connected to the exhaust unit, the second filter unit includes a second filter lower shell, a second filter element and a second filter upper shell, the second filter lower shell is connected to the fuselage cover , the second upper filter housing and the second lower filter housing are detachably connected to accommodate the second filter element.
The light-curing 3D printing device of claim 1, wherein the body cover includes a base and an upper cover, the base and the upper cover are detachably fastened, and the upper cover and the base The first circulation component is buckled and defined in the first accommodation space; the light-curing 3D printing device also includes a printing platform and a printing unit located in the first accommodation space. assembly, the printing platform and the printing assembly are respectively connected to the base, the first accommodation space is the molding space of the light-curing 3D printing device, and the printing assembly cooperates with the printing platform to perform 3D printing .
The light-curing 3D printing device according to claim 10, wherein a second accommodation space is defined inside the base, the first accommodation space is connected with the second accommodation space, and the internal space includes The first accommodation space and the second accommodation space, the printing assembly defines a third accommodation space, the third accommodation space and the second accommodation space and the first accommodation space Communicated, the gas outside the light-curing 3D printing device can reach the first accommodation space via the second accommodation space and the third accommodation space in sequence.