CN218256805U

CN218256805U - Photocuring 3D printing apparatus

Info

Publication number: CN218256805U
Application number: CN202222440781.9U
Authority: CN
Inventors: 陈春; 黄国华
Original assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Current assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-01-10
Anticipated expiration: 2032-09-15
Also published as: WO2024055652A1

Abstract

The embodiment of the application provides a photocuring 3D printing apparatus, it is used for making liquid photocuring resin solidification shaping in order to realize 3D and print through illumination, photocuring 3D printing apparatus includes: a body cover defining an interior space; the first circulating assembly is arranged in the inner space and used for heating and filtering gas in the inner space; the first circulation assembly comprises a first gas driving unit, a heating unit and a first filtering unit, wherein the first gas driving unit, the heating unit and the first filtering unit are arranged in the first gas cavity at intervals, and the first gas driving unit is used for sucking gas outside the first gas cavity into the first gas cavity and transmitting the gas to the outside of the first gas cavity after passing through the heating unit and the first filtering unit. Photocuring 3D printing apparatus can carry out filtration purification and temperature control to inside gaseous environment.

Description

Photocuring 3D printing apparatus

Technical Field

The application relates to the field of 3D printing, in particular to photocuring 3D printing equipment.

Background

The photocuring 3D printer generally irradiates liquid photocuring resin with a light source having a specific wavelength range and initiates a photochemical reaction, so that the photocuring resin in the region irradiated by the light source is cured from the liquid state, and an object to be molded is obtained after the photocuring resin is cured layer by layer. Since the liquid photocurable resin has certain volatility, generates a large odor and releases some gases harmful to human body in use, and the main component is acrylic acid molecules, the liquid photocurable resin causes environmental pollution in long-term use and may affect human health.

The photocuring 3D printer in the prior art generally adopts a closable printer structure to prevent harmful gas in the inner space of the printer body from being released outwards. Because the shell of photocuring 3D printer is difficult to accomplish totally inclosed, and need open the fuselage shell and annotate liquid photocuring resin raw materials before beginning to print, need open the fuselage shell and take out the printing finished product after printing the completion, these operations all can lead to accumulating in the inside harmful gas direct release of fuselage shell to the outside air, pollute the outside air, and probably cause the harm to human health. In addition, the ambient temperature has a direct influence on the printing effect during the photocuring process, and how to rapidly and uniformly regulate and control the ambient temperature and treat harmful components in the gas makes consideration for those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem in the prior art, the embodiment of the application provides a photocuring 3D printing apparatus, photocuring 3D printing apparatus can filter purification and temperature control to inside gaseous environment.

The embodiment of the application provides a photocuring 3D printing apparatus, it is used for making liquid photocuring resin solidification shaping in order to realize 3D and print through illumination, photocuring 3D printing apparatus includes:

a body cover defining an interior space;

the first circulating assembly is arranged in the inner space and used for heating and filtering gas in the inner space;

the first circulation assembly comprises a first gas driving unit, a heating unit and a first filtering unit, wherein the first gas driving unit, the heating unit and the first filtering unit are arranged in the first gas cavity at intervals, and the first gas driving unit is used for sucking gas outside the first gas cavity into the first gas cavity and transmitting the gas to the outside of the first gas cavity after passing through the heating unit and the first filtering unit.

In a possible implementation manner, the heating unit includes a hollow bracket and a heating wire, the heating wire is disposed around the hollow bracket, and the heating wire is used for heating after being powered on to heat the gas.

In a possible embodiment, the heating unit is disposed between the first gas driving unit and the first filtering unit, the first filtering unit includes a first filter element, and the first filtering unit is configured to allow the gas entering the first gas cavity to pass through the first filter element and then to be discharged out of the first gas cavity.

In a possible embodiment, the first gas driving unit further comprises a front housing, a rear housing and a top housing, the front housing and the rear housing being fastened to accommodate the first gas driving unit and the heating unit, the top housing being connected to one side of the front housing and the rear housing after fastening to accommodate the first filtering unit.

In a possible embodiment, the first gas driving unit further includes an integrated circuit board, the integrated circuit board is connected to the front housing and disposed in the first gas cavity, and the first gas driving unit and the heating unit are electrically connected to the integrated circuit board.

In a possible implementation manner, the photocuring 3D printing apparatus further includes a second circulation component, the second circulation component communicates the internal space and the outside of the photocuring 3D printing apparatus, and the second circulation component is configured to filter the gas in the internal space and then discharge the filtered gas to the outside of the photocuring 3D printing apparatus.

In one possible embodiment, the second circulation assembly is fixed to the body cover, and the second circulation assembly includes a second gas driving unit, a second filter unit, and an exhaust unit, the second filter unit is communicated with the inner space, the second gas driving unit is communicated with the second filter unit, the second gas driving unit is communicated with the exhaust unit, and the exhaust unit is communicated to the outside of the photocuring 3D printing apparatus.

In a possible embodiment, the second gas driving unit includes a blowing fan and a fixing frame, the blowing fan passes through the fixing frame and is connected to the body cover, the blowing fan is connected to the exhaust unit, the second filtering unit includes a second filtering lower shell, a second filter element and a second filtering upper shell, the second filtering lower shell is connected to the body cover, and the second filtering upper shell is detachably connected to the second filtering lower shell to accommodate the second filter element.

In a possible implementation manner, the machine body cover comprises a base and an upper cover, the base is detachably buckled with the upper cover, the upper cover is buckled with the base and defines a first accommodating space, and the first circulating assembly is arranged in the first accommodating space; photocuring 3D printing apparatus is still including locating print platform and printing component in the first accommodation space, print platform reaches printing component respectively with the base is connected, first accommodation space does photocuring 3D printing apparatus's shaping space, printing component with the printing platform cooperation is carried out 3D and is printed.

In a possible implementation manner, a second accommodating space is defined inside the base, the first accommodating space is communicated with the second accommodating space, the inner space includes the first accommodating space and the second accommodating space, the printing assembly defines a third accommodating space, the third accommodating space is communicated with the second accommodating space and the first accommodating space, and gas outside the photocuring 3D printing device can sequentially reach the first accommodating space through the second accommodating space and the third accommodating space.

Compare in prior art, the photocuring 3D printing apparatus of this application makes the gas in the inner space realize the circulation through first circulation subassembly through first gas drive unit, and in the circulation process, the gas through first circulation subassembly can be filtered and purified by first filter cell, and simultaneously, the gas through first circulation subassembly can also be heated by the heating element. The utility model provides a photocuring 3D printing apparatus through an integrated first circulation subassembly that has heating and filtering capability, purifies and heats the gas in the inner space through gas circulation high efficiency.

Drawings

Fig. 1 is a schematic perspective view of a photocuring 3D printing apparatus of the present application.

Fig. 2 is a schematic perspective exploded view of a photocuring 3D printing apparatus of the present application.

Fig. 3 is a schematic perspective view of the photocuring 3D printing apparatus of the present application after the upper cover is hidden.

Fig. 4 is a schematic perspective view of the photocuring 3D printing apparatus according to the present application after an upper cover and a first circulation assembly are hidden.

Fig. 5 is a schematic perspective view of a first circulation assembly of the photocuring 3D printing apparatus of the present application.

Fig. 6 is a schematic perspective view of a first circulation assembly of a photocuring 3D printing apparatus of the present application.

Fig. 7 is an exploded perspective view of a first circulation assembly of the photocuring 3D printing apparatus of the present application.

Fig. 8 is a schematic perspective exploded view of the first circulation assembly of the photocuring 3D printing apparatus of the present application from another angle.

Fig. 9 is a perspective view illustrating a stereolithography apparatus including a second circulation assembly according to the present application.

Description of the main elements

Photocuring 3D printing apparatus 1

Fuselage cover 10

Inner space 100

First accommodation space 101

Second accommodating space 102

Third accommodating space 103

Upper cover 104

Base 105

Middle plate 106

Retaining edge 1061

Through hole 1062

Side plate 107

Front plate 108

Display area 1081

Rear plate 109

First circulation assembly 11

First air cavity 110

First filter unit 111

First filter element 112

First gas driving unit 113

Heating unit 114

Hollowed-out support 115

Heating wire 116

Front shell 117

Rear shell 118

Top case 119

Integrated circuit board 130

First button 131

Second push button 132

Nixie tube 133

Label paster 134

Inner support 138

Bottom shell 139

Second circulation assembly 12

The second filtering unit 121

Second Filter Upper Shell 1211

Second filtering lower shell 1212

Second cartridge 1213

Second gas driving unit 123

Blower fan 124

Fixed mount 125

Exhaust unit 126

Exhaust interface 127

Aluminum foil air hose 128

Seal ring 129

Printing platform 14

Trough 141

Fixing bolt 142

Printing assembly 15

Column 151

Opening structure 1510

Driving module 152

Forming module 153

Brattice 154

Top plate 155

Hanging hole 156

Screw 157

Connection unit 158

Molding platform 159

DC power supply hole 161

TYPE-C power supply hole 162

Heating unit socket 163

Air intake temperature sensor 164

Air outlet temperature sensor 165

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

The following description will refer to the accompanying drawings to more fully describe the present disclosure. There is shown in the drawings exemplary embodiments of the present application. This application may, however, be embodied in many different forms and should not be construed as limited to the exemplary 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. Like reference numerals designate identical or similar components.

The terminology used herein is for the purpose of describing particular example 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. Further, as used herein, "comprises" and/or "comprising" and/or "having," integers, steps, operations, components, and/or components, but does not preclude 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 otherwise defined herein, terms such as those defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present application and will not be interpreted in an idealized or overly formal sense.

The following description of exemplary embodiments refers to the accompanying drawings. It should be noted that the components depicted in the referenced drawings are not necessarily shown to scale; and the same or similar components will be given the same or similar reference numerals or similar terms.

Embodiments of the present application will now be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 9, the present application provides a light-cured 3D printing apparatus 1 for curing and molding a liquid light-cured resin by illumination to realize 3D printing, where the light-cured 3D printing apparatus 1 includes a body cover 10 and a first circulation assembly 11. The body cowl 10 defines an interior space 100 therein; the first circulation module 11 is disposed in the inner space 100 and is used for heating and filtering the gas in the inner space 100; the first circulation assembly 11 defines a first air cavity 110 therein, the first circulation assembly 11 includes a first air driving unit 113, a heating unit 114 and a first filtering unit 111, the first air driving unit 113, the heating unit 114 and the first filtering unit 111 are disposed in the first air cavity 110 at intervals, and the first air driving unit 113 is configured to suck the air outside the first air cavity 110 into the first air cavity 110, and transmit the air to the outside of the first air cavity 110 after passing through the heating unit 114 and the first filtering unit 111.

Compared with the prior art, the photocuring 3D printing apparatus 1 of the present application circulates the gas in the internal space 100 through the first circulation assembly 11 by the first gas driving unit 113. During the circulation, the gas passing through the first circulation module 11 can be filtered and purified by the first filtering unit 111, and at the same time, the gas passing through the first circulation module 11 can be heated by the heating unit 114. The photocuring 3D printing apparatus 1 of this application through an integrated first circulation subassembly 11 that has heating and filtering capability, purifies and heats the gas in inner space 100 through gas circulation high efficiency.

As can be appreciated, the first circulation assembly 11 adjusts the molding ambient temperature of the photocuring 3D printing device 1 by heating the gas in the interior space 100. For example, the temperature of the liquid photocurable resin, especially the temperature of the upper surface of the liquid photocurable resin, may be adjusted by heating the gas in the internal space 100 to 70 to 80 ℃ and then conducting to the photocurable resin. The preferred printing temperature range of the light-cured resin is 35 to 45 ℃; if the temperature is too low, the curing reaction of the light-cured resin is slowed down, so that the curing time is prolonged, the curing time of each layer needs to be increased in a matching manner, and if the curing time is not increased and the printing is continued, the next layer is printed to delaminate the model probably because the previous layer is not completely cured; if the temperature is too high, the curing reaction of the light-cured resin is fast, the internal stress of the model cannot be completely released, so that the model can crack at the later stage, meanwhile, the curing time of each layer is reduced in a matching way, and the model can be layered due to mismatching.

In an embodiment, the body cover 10 includes an upper cover 104 and a base 105, the upper cover 104 is detachably fastened to the base 105, the upper cover 104 is fastened to the base 105 and defines a first accommodating space 101, and the first circulating assembly 11 is disposed in the first accommodating space 101.

In one embodiment, the upper housing 104 may be hollow and shaped as a half-enclosure upper cover. In this embodiment, the upper cover 104 may be 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 fastened to the base 105 is larger, so as 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 middle plate 106 cooperating with the upper cover 104 to define the first accommodating space 101, and the base 105 further includes two side plates 107, a front plate 108 and a rear plate 109 disposed outside the inner space 100 and surrounding the middle plate 106.

In this embodiment, the middle plate 106 may further have locking edges 1061 at the periphery thereof, the locking edges 1061 may be disposed at four corners of the middle plate 106, and the upper cover 104 may be fastened to the base 105 through the stepped locking edges 1061 to form the inner space 100 with better sealing performance. The two side plates 107 are arranged on two opposite sides of the base 105 at intervals, the front plate 108 and the rear plate 109 are arranged on the other two opposite sides of the base 105 at intervals, and the front plate 108 and the rear plate 109 are respectively arranged between the two side plates 107. The front plate 108 may be provided with a display area 1081, the display area 1081 may be a touch display module integrated with display and touch functions, the display area 1081 may be used to display relevant information of the photocuring 3D printing apparatus 1 or enable an operator to perform operations through touch, and further, the display area 1081 may be integrated with an existing processor module capable of performing digital operations.

In an embodiment, the base 105 defines a second accommodating space 102 therein, the first accommodating space 101 is communicated with the second accommodating space 102, and the second accommodating space 102 can be communicated with an external air environment of the photo-curing 3D printing apparatus 1 through a ventilation structure (e.g., an air hole, etc.) formed on the side plate 107 and/or the rear plate 109.

In an embodiment, the photocuring 3D printing apparatus 1 further includes a printing platform 14 and a printing component 15 disposed in the first accommodating space 101, the printing platform 14 and the printing component 15 are respectively connected with the base 105, the first accommodating space 101 is a molding space of the photocuring 3D printing apparatus 1, and the printing component 15 is matched with the printing platform 14 for 3D printing. Further, the area between the printing platform 14 and the printing assembly 15 may be a molding area of the photocuring 3D printing apparatus 1.

In one embodiment, the printing platform 14 may include a trough 141 and fixing pins 142, the trough 141 may be used for accommodating the liquid photocurable resin, the two fixing pins 142 are disposed at two sides of the trough 141 at intervals, and the trough 141 is detachably connected to the base 105 through the fixing pins 142. Trough 141 can be secured to the surface of middle plate 106 by tightening securing bolt 142 and directing the opening of trough 141 away from the side of middle plate 106 so that light from print module 15 can impinge on trough 141. The trough 141 can be removed from the base 105 by loosening the securing bolt 142 to facilitate removal of the trough 141 from the interior space 100 for filling or cleaning.

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

In one embodiment, the inner space 100 includes a third accommodating space 103 in addition to the first accommodating space 101 and the second accommodating space 102. The column 151 of the printing assembly 15 defines a third accommodating space 103, the third accommodating space 103 is communicated with the second accommodating space 102 and the first accommodating space 101, and the gas outside the photocuring 3D printing apparatus 1 can sequentially reach the first accommodating space 101 through the second accommodating space 102 and the third accommodating space 103.

In this embodiment, the upright 151 at least includes a surrounding plate 154 and a top plate 155, the surrounding plate 154 is connected to the base 105 and extends to a side away from the base 105, the top plate 155 is connected to an end of the surrounding plate 154 away from the base 105, and a hanging hole 156 for hanging the first circulating assembly 11 is opened on the surrounding plate 154. The driving module 152 may be disposed in the third accommodating space 103, and the driving module 152 may include a screw 157 and a driving motor (not shown) for driving the screw 157, and the driving motor may be drivingly connected to the screw 157 through a coupling (not shown). It can be understood that the driving motor and the coupling can be any structures commonly found and used in the prior art (for example, the driving motor can be a stepping motor), and the driving motor and the coupling are used for cooperating with each other to drive the lead screw 157 to drive the forming module 153 to move.

In this embodiment, the forming module 153 may include a connecting unit 158 and a forming platform 159, one end of the connecting unit 158 extends into the third receiving space 103 to be drivingly connected to the screw rod 157, the other end of the connecting unit 158 is connected to the forming platform 159, and the screw rod 157 drives the forming platform 159 to movably dip into the trough 141. The base 105 may further include a molding light source (not shown) inside, which irradiates a molding light beam toward the bottom of the trough 141, the molding light beam passes through a screen (not shown) installed at the middle plate 106, the screen displays a pattern to be printed, the molding light beam projects a light spot through the pattern to the liquid photocurable resin in the trough 141, and the molding stage 159 is immersed in the liquid photocurable resin under the control of the lead screw 157 to complete molding printing.

In this embodiment, the side of the pillar 151 facing the molding module 153 may be an opening 1510 to avoid interference with the movement of the connecting unit 158; in other embodiments, a cover plate structure (not shown) covering the opening 1510 may also be disposed at a position of the upright 151 corresponding to the opening 1510 to enhance the sealing performance of the first accommodating space 101 and reduce the airflow interaction speed between the first accommodating space 101 and the third accommodating space 103.

In one embodiment, the first circulating assembly 11 further includes a front housing 117, a rear housing 118, and a top housing 119, wherein the front housing 117 and the rear housing 118 are fastened to accommodate the first gas driving unit 113 and the heating unit 114, and the top housing 119 is connected to one side of the fastened front housing 117 and rear housing 118 to accommodate the first filtering unit 111.

In this embodiment, the front shell 117 and the rear shell 118 may be fixed by a sheet metal folded edge and a countersunk head screw, and the front shell 117 and the rear shell 118 are fixed to form a hollow column with two open ends; the top shell 119 is buckled at the same end of the front shell 117 and the rear shell 118, and the top shell 119 can be matched with the buckling positions of the corresponding positions of the front shell 117 and the rear shell 118 through the raised buckles at the bottom, so that the fixing form of quick assembly and disassembly is realized, and the first filtering unit 111 can be quickly replaced conveniently. The front case 117, the rear case 118, and the top case 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 far from the top shell 119, and the heating unit 114 is disposed on the side close to the top shell 119.

In an embodiment, the first circulation assembly 11 further includes an inner support 138 and a bottom shell 139, the front shell 117 and the rear shell 118 may be connected to the inner support 138, the heating unit 114 and the first gas driving unit 113 may be connected to the inner support 138, the heating unit 114 may be clamped in the inner support 138, and the first filtering unit 111 and the first gas driving unit 113 may be connected to two opposite sides of the inner support 138. The bottom housing 139 is connected to the front housing 117 and the rear housing 118, and the bottom housing 139 is disposed on a side of the first gas driving unit 113 away from the heating unit 114. In the embodiment, the bottom housing 139 may be fixedly connected to the front housing 117 and the rear housing 118 by countersunk screws.

In this embodiment, the rear housing 118 may be provided with a protruding structure such as a screw, so that the rear housing 118 is engaged with the hanging hole 156 to detachably connect the first circulation assembly 11 with the upright 151. It can be understood that the first circulating assembly 11 is hung on the upright column 151, and the first circulating assembly 11 is arranged close to the molding area, the first gas driving unit 113 (the gas inlet end of the first circulating assembly 11) is close to the trough 141, and the first filtering unit 111 (the gas outlet end of the first circulating assembly 11) is close to the molding module 153, so that the molding area is directly and more efficiently purified, heated and thermostatically controlled.

In one embodiment, the heating unit 114 includes a hollow bracket 115 and a heating wire 116, the heating wire 116 is disposed around the hollow bracket 115, and the heating wire 116 is used for heating the gas after being electrified. The heating unit 114 may further include an overcurrent protection switch (not shown), which may be disposed in series with the heating wire 116.

In this embodiment, the hollow frame 115 may be a hollow three-dimensional skeleton with a cross-shaped or cross-shaped cross section and extending in the same extending direction as the front shell 117 and the rear shell 118, and the heating wire 116 is rotatably disposed around the periphery of the hollow frame 115. The hollow supports arranged in a cross or a groined shape can improve the passing efficiency of the airflow, so that the airflow can circulate smoothly when passing through the heating unit 114.

In an embodiment, the heating unit 114 is disposed between the first gas driving unit 113 and the first filtering unit 111, the first filtering unit 111 includes a first filter element 112, and the first filtering unit 111 is used for allowing the gas entering the first gas chamber 110 to pass through the first filter element 112 and then to be discharged out of the first gas 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 a cube type to fit the top case 119. In other embodiments, the first filter unit 111 may further include a reinforced filter membrane for wrapping the first filter element 112, so as to improve the filtering performance of the first filter unit 111.

In the present embodiment, the first gas driving unit 113 is an axial flow fan, and the first gas driving unit 113 generates an air flow along the axial direction of the first circulation member 11. After the first air driving unit 113 is started, the air flow outside the first air chamber 110 is sucked into the first air chamber 110 through the vent hole of the bottom shell 139, the air flow is further sucked into the first air driving unit 113 and pushed out by the first air driving unit 113, the air flow then passes through the hollow bracket 115 of the heating unit 114 and is heated by the heating wire 116, the air flow then passes through the first filtering 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), and the air flow passes through the first filtering unit 111 and is then discharged to the first accommodating space 101 through the opening on the top shell 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 disposed in the first gas cavity 110, and the first gas driving unit 113 and the heating unit 114 are electrically connected to the integrated circuit board 130.

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, a second button 132 and a nixie tube 133. The surface of the ic board 130 facing the outside of the first circulation assembly 11 may be provided with various connectors and/or auxiliary units, such as a DC power hole 161, a TYPE-C power hole 162, a cooling fan (not shown), a heating unit socket 163, an air inlet temperature sensor 164, and an air outlet temperature sensor 165, which are conventional and practical in the prior art, wherein the DC power hole 161 may be a power interface of the ic board 130, the TYPE-C power hole 162 may be an interface for electrical signal interaction between the ic board 130 and the display area 1081, the cooling fan may be a cooling unit for cooling the ic board 130, the heating unit socket 163 may be an electrical interface for electrically connecting the heating unit 114 and the ic board 130 and supplying power to the heating unit 114, and the air inlet temperature sensor 164 and the air outlet temperature sensor 165 may be temperature sensing units (e.g., electronic thermometers) spaced apart from the first air chamber 110 for assisting in temperature monitoring.

In this embodiment, the nixie tube 133 can be used to display four digits; wherein, the two digits on the left side of the nixie 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 real-time temperature of the air inlet; two digits on the right side of the nixie tube 133 can be used to display the preset temperature at the air outlet of the heating unit 114.

In this embodiment, the first button 131 may be a "+" plus function button, the second button 132 may be a "-" minus function button, and the preset temperature displayed by two digits on the right side of the nixie tube 133 can be adjusted by pressing the first button 131 and the second button 132. The two digits on the right side of the nixie tube 133 can be increased or decreased by 1 ℃ by lightly pressing the first button 131 or the second button 132, the currently set temperature can be confirmed and the heating unit 114 can be started by pressing the first button 131 or the second button 132 for about 3 seconds, and the preset temperature displayed by the two digits on the right side of the whole nixie tube 133 can be directly increased to 99 ℃ or decreased to room temperature by pressing the first button 131 or the second button 132 for about 10 seconds.

In one embodiment, the first gas driving unit 113 further comprises a label sticker 134, and the label sticker 134 can be attached to the surface of the integrated circuit board 130 facing the outside of the first circulation assembly 11 to cover a countersunk screw or other joint mark for connection, thereby achieving an effect of beautifying the appearance. The label sticker 134 may also have a plus "+" icon corresponding to the first button 131 and a minus "-" icon corresponding to the second button 132 on the surface, and those skilled in the art will understand that other suggestive text or pattern marks may be disposed on the label sticker 134.

In an embodiment, the light-curing 3D printing apparatus 1 further includes a second circulation component 12, the second circulation component 12 communicates the internal space 100 and the outside of the light-curing 3D printing apparatus 1, and the second circulation component 12 is configured to filter the gas in the internal space 100 and then discharge the filtered gas to the outside of the light-curing 3D printing apparatus 1.

In an embodiment, the second circulation device 12 is fixed to the body cover 10, the second circulation device 12 includes a second gas driving unit 123, a second filtering unit 121, and an exhaust unit 126, the second filtering unit 121 is communicated with the inner space 100, the second gas driving unit 123 is communicated with the second filtering unit 121, the second gas driving unit 123 is communicated with the exhaust unit 126, and the exhaust unit 126 is communicated to the outside of the photocuring 3D printing apparatus 1.

In one embodiment, the second air driving unit 123 includes a blower fan 124 and a fixing frame 125, the blower fan 124 is connected to the body housing 10 through the fixing frame 125, the blower fan 124 is connected to the exhaust unit 126, the second filter unit 121 includes a second filter upper casing 1211, a second filter lower casing 1212 and a second filter element 1213, the second filter lower casing 1212 is connected to the body housing 10, and the second filter upper casing 1211 is detachably connected to the second filter lower casing 1212 to receive the second filter element 1213.

Further, the second circulating assembly 12 is disposed in the first accommodating space 101, the second circulating assembly 12 is connected to the middle plate 106, and the second circulating assembly 12 may be disposed at any one of four corners of the base 105.

In the present embodiment, the second filtering unit 121 is disposed in the first accommodating space 101, and the second gas driving unit 123 is disposed in the second accommodating space 102. A through hole 1062 is formed through the middle plate 106, the through hole 1062 penetrates through the middle plate 106 and communicates the first receiving space 101 and the second receiving space 102, and a sealing ring 129 is disposed at the through hole 1062. The second filtering lower shell 1212 is connected to the middle plate 106 and is clamped in the through hole 1062, the fixing frame 125 is connected to the middle plate 106 and is clamped in the through hole 1062, the sealing ring 129 is at least arranged at the joint between the second filtering lower shell 1212 and the middle plate 106, and further can be arranged at the joint between the fixing frame 125 and the middle plate 106, so as to improve the sealing property between the first accommodating space 101 and the second accommodating space 102 and prevent the harmful gas to be treated in the first accommodating space 101 from directly overflowing without passing through the second circulating assembly 12.

In this embodiment, the second filtering upper casing 1211 and the second filtering lower casing 1212 are fastened to form a hollow cylinder, and the cylindrical second filter element 1213 is disposed in the second filtering upper casing 1211 and the second filtering lower casing 1212. The second filtering upper shell 1211 and the second filtering lower shell 1212 can be fixed by an L-shaped rotary buckle, so that the second filtering upper shell 1211 can be rotated to achieve the function of quick assembly and disassembly, and the second filter element 1213 containing the active carbon components can be quickly replaced.

In this embodiment, the blower fan 124 may be an existing blower fan having a shape similar to a snail shell, an air inlet end of the blower fan 124 is connected to the hollow fixing frame 125 and forms an air loop, an air outlet end of the blower fan 124 is connected to the air outlet port 127 and forms an air loop, the air outlet port 127 is further connected to the aluminum foil air duct 128 and forms an air loop, the aluminum foil air duct 128 is foldable, a length of 1 meter in an extended state can be compressed to a length of 20 cm, and an occupied space is reduced to the maximum extent. The blower fan 124 is started to draw in the gas in the first accommodating space 101 through the second filtering unit 121, and the filtered gas is discharged to the outside of the photocuring 3D printing apparatus 1 through the exhaust unit 126, so that the gas flow is kept flowing from the molding space to the outside of the photocuring 3D printing apparatus 1 through the second circulation component 12, and harmful gas cannot overflow due to too high gas pressure in the molding space caused by gas generated in the printing process. It is understood that the air outlet port 127 may be disposed in a substantially perpendicular connection with the second filter unit 121.

The utility model provides a photocuring 3D printing apparatus 1, first circulation subassembly 11 realizes that the temperature in shaping space is controllable, through from 11 reverse convulsions heated air of first circulation subassembly bottom axial fan after, through the peculiar smell gas of first filter unit 111 elimination at top, reaches the purpose of heating and the inside air in purification shaping space. The second circulation assembly 12 is drawn out from the inside of the molding space by the blower fan 124 installed at the bottom of the middle plate 106, filtered by the second filtering unit 121, and then exhausted to the outside by being guided by the aluminum foil duct 128, thereby achieving the purpose of purifying the air inside the molding space of the machine. Mutually support through first circulation subassembly 11 and second circulation subassembly 12, can effectively filter the harmful gas that forms in the shaping space, like acrylic acid molecule etc for it is clean harmless gas to get rid of the printer outside, has solved current sealed 3D printer and has revealed harmful gas's problem. Meanwhile, in an environment with lower temperature, the temperature inside the forming space can be heated, so that the resin is at the optimal working temperature, and the printing effect is ensured. In addition, at least one of the first circulation component 11 and the second circulation component 12 may be turned on according to actual use requirements, for example, when printing is performed in an area with poor ventilation environment, only the first circulation component 11 may be turned on, when printing is performed in an area with good ventilation environment, only the second circulation component 12 may be turned on, and if further temperature control is required, the first circulation component 11 may also be turned on at the same time.

Hereinbefore, specific embodiments of the present application are described with reference to the drawings. However, those skilled in the art will appreciate that various modifications and substitutions can be made to the specific embodiments of the present application without departing from the spirit and scope of the present application. Such modifications and substitutions are intended to be within the scope of the present application.

Claims

1. A photocuring 3D printing device, the photocuring 3D printing device comprising:

a body cover defining an interior space;

2. The photocuring 3D printing apparatus of claim 1, wherein the heating unit includes a hollow bracket and a heating wire, the heating wire is disposed around the hollow bracket, and the heating wire is configured to generate heat to heat gas after being energized.

3. The photocuring 3D printing apparatus of claim 1, wherein the heating unit is disposed between the first gas driving unit and the first filtering unit, the first filtering unit includes a first filter element, and the first filtering unit is configured to allow the gas entering the first gas cavity to permeate through the first filter element and then to be discharged out of the first gas cavity.

4. The photo-curing 3D printing apparatus according to claim 1, wherein the first gas driving unit further comprises a front case, a rear case, and a top case, the front case and the rear case being coupled to accommodate the first gas driving unit and the heating unit, the top case being connected to one side of the coupled front case and rear case to accommodate the first filtering unit.

5. The photocuring 3D printing apparatus of claim 1, further comprising a printing platform and a printing assembly, wherein the printing assembly comprises a column and a forming module, the column and the printing platform are connected to the body housing, the forming module is spaced from the printing platform, and the first circulation assembly is detachably connected to the column, such that the first gas driving unit is disposed adjacent to the printing platform, and the first filtering unit is disposed adjacent to the forming module.

6. The photocuring 3D printing device of claim 1, further comprising a second circulation assembly, the second circulation assembly communicating the interior space and an exterior of the photocuring 3D printing device, the second circulation assembly being configured to filter and discharge the gas in the interior space to the exterior of the photocuring 3D printing device.

7. The photocuring 3D printing apparatus of claim 6, wherein the body cover includes a base and an upper cover, the base and the upper cover being detachably fastened to define a first accommodating space, the first circulation assembly and the second circulation assembly being disposed in the first accommodating space, the base including a middle plate cooperating with the upper cover to define the first accommodating space, the second circulation assembly being connected to the middle plate.

8. The photocuring 3D printing device of claim 6, wherein the second circulation assembly is fixed with the body cover, the second circulation assembly including a second gas drive unit, a second filter unit, and a vent unit, the second filter unit being in communication with the interior space, the second gas drive unit being in communication with the second filter unit, the second gas drive unit being in communication with the vent unit, the vent unit being in communication to an exterior of the photocuring 3D printing device.

9. The photocuring 3D printing device of claim 8, wherein the second gas driving unit includes an air blowing fan and a mount, the air blowing fan being coupled to the body housing through the mount, the air blowing fan being coupled to the exhaust unit, the second filtering unit including a second lower filtering shell, a second filter element, and a second upper filtering shell, the second lower filtering shell being coupled to the body housing, the second upper filtering shell being detachably coupled to the second lower filtering shell to receive the second filter element.

10. The photocuring 3D printing apparatus of claim 1, wherein the body housing includes a base and an upper housing, the base and the upper housing being detachably fastened, the upper housing being fastened to the base and defining a first receiving space, the first circulation assembly being disposed in the first receiving space; photocuring 3D printing apparatus is still including locating print platform and printing component in the first accommodation space, print platform reaches printing component respectively with the base is connected, first accommodation space does photocuring 3D printing apparatus's shaping space, printing component with the printing platform cooperation is carried out 3D and is printed.

11. The photocuring 3D printing apparatus of claim 10, wherein the base defines a second accommodating space inside, the first accommodating space communicates with the second accommodating space, the inner space includes the first accommodating space and the second accommodating space, the printing assembly defines a third accommodating space, the third accommodating space communicates with the second accommodating space and the first accommodating space, and gas outside the photocuring 3D printing apparatus can reach the first accommodating space through the second accommodating space and the third accommodating space in sequence.