A 3D printing heat preservation forming device for photosensitive resin material

Abstract

The application is a kind of 3D printing heat preservation forming device for photosensitive resin material, relating to the technical field of 3D printing equipment, comprising a printer box, a printing head installed on the inner side of the printer box, a heat preservation material box installed on the top of the printer box, and a detachable feeding port arranged on the upper side of the heat preservation material box. A first helical blade rod and a second helical blade rod are arranged in the heat preservation material box to rotate synchronously. The first helical blade rod transports the material on the left side of the heat preservation material box downward, while the second helical blade rod transports the material on the right side of the heat preservation material box upward, thereby forming an up-down circulating mixing and conveying. This kind of mixing and conveying can greatly improve the fluidity of the material, and the resin material can flow along the transverse heating upright and longitudinal heating upright and be uniformly heated by using the fluidity and cooperating with the transverse heating upright and longitudinal heating upright arranged around.

Description

Technical Field

[0001] This invention specifically relates to a 3D printing thermal insulation molding device for photosensitive resin materials, and pertains to the field of 3D printing equipment technology. Background Technology

[0002] In the photosensitive resin 3D printing process, the uniformity of resin temperature plays a crucial role in the accuracy, surface quality, and mechanical properties of the molded parts. However, the existing material box heating and insulation structure of 3D printers has significant defects. Currently, common material boxes typically use a single heating plate combined with side heating wires. This structure has a limited heating area coverage, only heating a local area of ​​the material box. As a result, the photosensitive resin inside the box cannot be heated sufficiently and evenly. The resin temperature near the heating source is higher, while the resin temperature far from the heating source is lower, with a temperature difference that can even exceed 5°C. At the same time, the insulation design of existing structures is relatively simple, relying mostly on the shell of the material box itself for passive insulation. The insulation effect is generally poor, making it difficult to maintain a continuous and uniform resin temperature during long-term printing. This easily leads to uneven resin viscosity distribution and inconsistent curing reaction rates, which in turn cause problems such as dimensional accuracy deviations, surface warping and deformation, and large dispersion in mechanical properties of the printed parts, seriously affecting the quality stability of the 3D printed products. Therefore, there is an urgent need to propose a 3D printing insulation molding device for photosensitive resin materials to improve the above problems. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a 3D printing thermal insulation molding device for photosensitive resin materials, thereby solving the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a 3D printing thermal insulation molding device for photosensitive resin materials, comprising a printer housing, a print head installed inside the printer housing, a thermal insulation material box installed on the top of the printer housing, and a detachable feed port located on the upper side of the thermal insulation material box. A first spiral blade rod and a second spiral blade rod for mixing and stirring materials are vertically rotatably installed in the middle of the inner side of the thermal insulation material box. The first spiral blade rod is used to convey the material on the left side inside the thermal insulation material box downwards, and the second spiral blade rod is used to convey the material on the right side inside the thermal insulation material box upwards, thereby forming an up-and-down circulating mixing and conveying of materials inside the thermal insulation material box.

[0005] The insulation material box has side pressure adjustment components arranged opposite to each other on the left and right sides. Each side pressure adjustment component includes a heat-conducting push plate that is laterally slidably arranged inside the insulation material box. A guide rod that extends through the insulation material box is installed on one side of the heat-conducting push plate. A telescopic push rod for pushing the heat-conducting push plate to move left and right is installed on the outside of the insulation material box. When the two heat-conducting push plates move relative to each other, the material is piled up to make full contact with the first spiral blade rod and the second spiral blade rod.

[0006] The heat-conducting push plates of the two side pressure adjustment components are each equipped with a rectangular array of multiple transverse heating plates on opposite sides. The front and rear inner walls of the insulation material box are equipped with longitudinal heating plates arranged in a rectangular array. The longitudinal heating plates are staggered from the transverse heating plates and are located on the outer periphery of the first and second helical blade rods. This allows the material that is circulated and transported inside the insulation material box to flow rapidly and be heated evenly along the transverse and longitudinal heating plates.

[0007] A further improved design includes spaced constant-temperature cavities in the center of the four sides of the insulation material box, forming an inner and outer frame. A cylinder cavity is formed in the center of both the first and second helical blade rods. A constant-temperature steam assembly is installed on the outside of the insulation material box. This assembly injects steam into the spaced constant-temperature cavities and cylinder cavities, allowing the first and second helical blade rods to rotate, transport, mix, and heat the material simultaneously.

[0008] In a further improved scheme, the constant temperature steam assembly includes a steam generator and a steam pipe. The outlet of the steam generator is connected to the spaced constant temperature chamber, and one side of the spaced constant temperature chamber is connected to the rod cylinder cavity through the steam pipe. An arc-shaped protrusion is integrally provided on the inner side of the rod cylinder cavity. The steam pipe passes through the inner side of the rod cylinder cavity and contacts the arc-shaped protrusion. While assisting in supporting the first and second helical blade rods, a gap for air outlet is formed between the inner wall of the rod cylinder cavity and the outer side of the steam pipe.

[0009] In a further improved design, a sealing rubber pad is provided on the outer frame of the heat-conducting push plate, and the sealing rubber pad is in close contact with the inner wall of the insulation material box.

[0010] In a further improved scheme, the longitudinally arranged transverse heating plates are distributed in a V-shape, with the first and second helical blade rods corresponding to the opening in the middle of the V-shape.

[0011] In a further improved design, triangular inclined plates are installed on opposite sides of the top of the two heat-conducting push plates, and the triangular inclined plates are located below the horizontal heating plate, the first helical blade rod, and the second helical blade rod.

[0012] In a further improved design, the bottom of the insulation material box is also provided with a discharge structure, which includes a discharge port located at the center of the bottom of the insulation material box and a pump body installed on the discharge port. The discharge end of the pump body is equipped with a constant temperature discharge pipe, which is connected to the print head. The discharge port is located between two triangular inclined plates.

[0013] In a further improved embodiment, the top of the insulation material box is provided with a transmission assembly for synchronously driving the rotation of the first helical blade rod and the second helical blade rod. The transmission assembly includes a transmission motor installed on the top of the insulation material box and a first driven gear and a second driven gear respectively installed on the top of the first helical blade rod and the second helical blade rod and meshing with each other. The motor shaft of the transmission motor is equipped with a driving gear for driving the rotation of the first driven gear, and the first driven gear and the second driven gear are located outside the insulation material box.

[0014] In a further improved design, multiple connecting holes are provided on the left and right sides of the inner frame plate, and the spaced constant temperature cavity is connected to the inner cavity of the insulation material box outside the heat-conducting push plate through the connecting holes.

[0015] By adopting the above technical solution, the present invention has the following advantages:

[0016] This invention features a simple and ingenious structure. Inside the insulation material box, a first and second spiral blade rod rotate synchronously. The first spiral blade rod transports material from the left side of the box downwards, while the second spiral blade rod transports material from the right side upwards, creating a mixed, cyclical transport. This mixed transport significantly improves the material's fluidity. This fluidity, combined with the vertically arranged transverse and longitudinal heating plates on the outer periphery, allows the resin material to flow rapidly and be heated evenly along these plates. This increases the heated area of ​​the resin material while ensuring its heat preservation effect. Furthermore, the relative displacement of the heat-conducting push plates in the two side-pressure adjustment components allows the material inside the insulation material box to accumulate towards the center, ensuring full contact and transport between the resin material and the first and second spiral blade rods. It also allows the transverse and longitudinal heating plates to concentrate on intensive heating of the material, further enhancing the heating effect.

[0017] Furthermore, since the longitudinally arranged transverse heating plates are distributed in a V-shape, with the first and second helical blade rods corresponding to the opening in the middle of the V-shape, when the first and second helical blade rods rotate and convey, some of the material thrown outward is more easily guided through the sides of the transverse heating plates of different lengths.

[0018] Meanwhile, a spaced constant temperature cavity is designed in the middle of the four sides of the insulation material box. This spaced constant temperature cavity can improve the heat insulation and temperature control effect. In addition, the use of the spaced constant temperature cavity in conjunction with the constant temperature steam component allows steam to enter the constant temperature steam component, thereby enhancing the heating and insulation effect of the outer periphery of the insulation material box. Moreover, the steam in the spaced constant temperature cavity can enter the inner cavity of the insulation material box through the connecting hole, thereby assisting the heat conduction of the heat-conducting push plate and further improving the heating effect of the material inside the insulation material box. In addition, the steam of the constant temperature steam component can also enter the cylinder cavity of the first and second helical blade rods, thereby allowing the first and second helical blade rods to circulate and transport the material while generating stability, greatly ensuring the heating and insulation of the material and improving the overall performance of the equipment. Attached Figure Description

[0019] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the thermal insulation material box of the present invention;

[0022] Figure 3 For the present invention Figure 1 A structural diagram from another perspective;

[0023] Figure 4 This is a schematic diagram of the internal structure of the thermal insulation material box of the present invention;

[0024] Figure 5 This is a schematic diagram of the side pressure adjustment component of the present invention;

[0025] Figure 6 This is a schematic diagram of the transmission component of the present invention;

[0026] Figure 7 This is a schematic diagram showing the positional structure of the transverse heating plate and the helical blade rod of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the rod cylinder cavity and the steam pipe of the present invention;

[0028] In the diagram: 1. Insulation material box; 2. Feed inlet; 21. Support leg; 31. First spiral blade rod; 32. Second spiral blade rod; 33. Rod cylinder cavity; 34. Arc-shaped protrusion; 4. Transmission assembly; 41. Transmission motor; 42. Drive gear; 43. First driven gear; 44. Second driven gear; 5. Side pressure adjustment assembly; 51. Telescopic push rod; 52. Guide rod; 53. Heat-conducting push plate; 54. Sealing rubber gasket; 55. Horizontal heating plate; 56. Triangular inclined plate; 6. Constant temperature steam assembly; 6. Steam generator; 61. Steam pipe; 62. Discharge structure; 70. Discharge port; 71. Pump body; 72. Constant temperature discharge pipe; 8. Printer box; 9. Print head; 10. Interval constant temperature chamber; 11. Longitudinal heating plate; 12. Inner frame plate; 12. Connecting hole; 13. Outer frame plate. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] like Figure 1-8As shown, this invention provides a 3D printing thermal insulation molding device for photosensitive resin materials, including a printer housing 8, a print head 9 installed inside the printer housing 8, a thermal insulation material box 1 installed on the top of the printer housing 8, and a detachable feed port 2 located on the upper side of the thermal insulation material box 1. A first spiral blade rod 31 and a second spiral blade rod 32 are vertically rotatably mounted in the middle of the inner side of the thermal insulation material box 1 for mixing and stirring materials. The first spiral blade rod 31 is used to convey the material on the left side of the thermal insulation material box 1 downwards, and the second spiral blade rod 32 is used to convey the material on the right side of the thermal insulation material box 1 upwards, thereby forming an up-and-down circulating mixing and conveying effect on the material inside the thermal insulation material box 1. Combined with the all-around heating structure of the box wall, the resin can be fully and evenly heated, effectively improving the thermal insulation effect and temperature stability. Side pressure adjustment components 5 are respectively arranged opposite each other on the left and right sides of the thermal insulation material box 1. Each side pressure adjustment component 5 includes a heat-conducting push plate 53 that is laterally slidably disposed inside the thermal insulation material box 1, and is heat-conducting... A guide rod 52 is installed on one side of the push plate 53, extending through the insulation material box 1. A telescopic push rod 51 is installed on the outside of the insulation material box 1 to push the heat-conducting push plate 53 to move left and right. When the two heat-conducting push plates 53 move relative to each other, the material is piled up in the middle area, so that the resin material originally located at the bottom and edge of the box is fully close to the first spiral blade rod 31 and the second spiral blade rod 32. The contact area between the piled-up resin material and the spiral blade rod increases by more than 30%. With the upper and lower circulation conveying, the uniformity of the resin temperature in the box is improved. Moreover, the periodic movement of the heat-conducting push plate 53 can prevent the filler in the resin from depositing at the bottom of the box, ensuring the uniformity of the material composition. By adjusting the distance between the two heat-conducting push plates 53, it can flexibly adapt to the printing requirements of different resin loading, ensuring that sufficient mixing can still be achieved even with a small amount of resin. At the same time, a sealing rubber pad 54 is provided on the outer frame of the heat-conducting push plate 53, and the sealing rubber pad 54 is in close contact with the inner wall of the insulation material box 1, improving the airtightness of the heat-conducting push plate 53 when sliding.

[0031] On opposite sides of the two side pressure adjustment components 5, the heat-conducting push plates 53 are each equipped with a rectangular array of multiple transverse heating plates 55. The heat-conducting push plates 53 can simultaneously generate heat under the action of the transverse heating plates 55, and heat and insulate the material. The inner walls of the insulation material box 1 at both the front and rear are equipped with longitudinal heating plates 11 arranged in a rectangular array. The longitudinal heating plates 11 are staggered from the transverse heating plates 55, and the four corners form a three-dimensional heating mesh. The staggered distribution of the heating plates increases the contact area between the material and the heating surface. Combined with the three-dimensional heating mesh structure, the resin heating rate can be increased, and the problems of traditional single heating methods are eliminated. Temperature blind zone; and the longitudinal heating plate 11 and the transverse heating plate 55 are arranged on the outer periphery of the first spiral blade rod 31 and the second spiral blade rod 32, so that the material conveyed by the heat insulation material box 1 in the upper and lower circulation flows quickly and is heated evenly along the transverse heating plate 55 and the longitudinal heating plate 11. The transverse heating plates 55 arranged in each longitudinal direction are distributed in a V shape, and the first spiral blade rod 31 and the second spiral blade rod 32 are positioned at the opening in the middle of the V shape. The V-shaped transverse heating plate 55 guides the material thrown out by the spiral blade rod to disperse in all directions, increasing the flow path of the material between the heating plates and improving the mixing uniformity.

[0032] In this embodiment, a spaced constant temperature cavity 10 is provided in the middle of the four sides of the insulation material box 1, thereby forming an inner frame plate 12 and an outer frame plate 13 around the insulation material box 1. A rod cylinder cavity 33 is provided in the middle of the first helical blade rod 31 and the second helical blade rod 32. A constant temperature steam assembly 6 is installed on the outside of the insulation material box 1. The constant temperature steam assembly 6 is used to inject steam into the spaced constant temperature cavity 10 and the rod cylinder cavity 33, so that the steam in the spaced constant temperature cavity 10 surrounds the four sides of the insulation material box 1 to play a role in insulation and heating. At the same time, the first helical blade rod 31 and the second helical blade rod 32 can heat the material while rotating, conveying and mixing it, which greatly improves the heating efficiency of the material.

[0033] The aforementioned constant-temperature steam assembly 6 includes a steam generator 61 and a steam pipe 62. The outlet of the steam generator 61 is connected to the spaced constant-temperature chamber 10, and one side of the spaced constant-temperature chamber 10 is connected to the rod cylinder chamber 33 through the steam pipe 62. Therefore, after the steam generator 61 sends steam into the spaced constant-temperature chamber 10, the steam in the spaced constant-temperature chamber 10 can enter the rod cylinder chamber 33 of the first helical blade rod 31 and the second helical blade rod 32 through the steam pipe 62, and heat the first helical blade rod 31 and the second helical blade rod 32 simultaneously. In order to facilitate the outward flow of steam, six arc-shaped protrusions 34 are integrally provided on the inner wall of the rod cylinder chamber 33. The steam pipe 62 is inserted through the inner side of the rod cylinder chamber 33 and contacts the arc-shaped protrusions 34. While assisting in supporting the first helical blade rod 31 and the second helical blade rod 32, a gap for steam outlet is formed between the inner wall of the rod cylinder chamber 33 and the outer side of the steam pipe 62. This gap allows the steam entering the rod cylinder chamber 33 to be finally discharged outward, ensuring the flow of internal steam.

[0034] A further design feature is the inclusion of a discharge structure 7 at the bottom of the insulation material box 1. This discharge structure 7 includes a discharge port 70 located at the center of the bottom of the insulation material box and a pump body 71 mounted on the discharge port 70. A thermostatic discharge pipe 72 is installed at the discharge end of the pump body 71 and is connected to the print head 9 via this thermostatic discharge pipe 72. The discharge port 70 is located between two triangular inclined plates 56, and triangular inclined plates 56 are installed on opposite sides of the top of the two heat-conducting push plates 53, with the triangular inclined plates 56 positioned on the horizontal heating plate 55. Below the first helical blade rod 31 and the second helical blade rod 32, the two triangular inclined plates 56 can simultaneously push the material upwards with the relative displacement of the heat-conducting push plate 53, allowing the material to contact the bottom horizontal heating plate 55 and the vertical heating plate 11. When near the discharge port 70, it can guide the material discharge of the middle discharge port 70. When it is necessary to discharge the material for printing, the material of the insulation material box 1 can be quickly drawn out to the print head 9 for 3D printing by controlling the pump body 71 of the discharge port 70.

[0035] In this embodiment, in order to enable the first helical blade rod 31 and the second helical blade rod 32 to rotate synchronously and maintain the cyclic conveying function, a transmission assembly 4 for synchronously driving the rotation of the first helical blade rod 31 and the second helical blade rod 32 is provided on the top of the insulation material box 1. The transmission assembly 4 includes a transmission motor 41 installed on the top of the insulation material box 1 and a first driven gear 43 and a second driven gear 44 respectively installed on the top of the first helical blade rod 31 and the second helical blade rod 32 and meshing with each other. A driving gear 42 for driving the rotation of the first driven gear 43 is installed on the motor shaft of the transmission motor 41, and the first driven gear 43 and the second driven gear 44 are located outside the insulation material box 1. Therefore, the transmission motor 41 drives the driving gear 42 to drive the first driven gear 43 and the second driven gear 44 installed on the top of the first helical blade rod 31 and the second helical blade rod 32.

[0036] Furthermore, in order to further ensure that the heat-conducting pusher plate 53 has the function of heat preservation and heating, multiple connecting holes 121 are respectively opened on the left and right sides of the inner frame plate 12. The constant temperature chamber 10 is connected to the inner cavity of the heat insulation material box 1 outside the heat-conducting pusher plate 53 through the connecting holes 121. In this way, steam can enter the heat insulation material box 1 and conduct heat to the back of the two heat-conducting pusher plates 53, so that the heat-conducting pusher plate 53 generates temperature and acts on the resin material. The thermal conductivity of the heat-conducting pusher plate 53 can help maintain the temperature stability of the resin in the stacked area and avoid the increase of resin viscosity due to local low temperature.

[0037] In a more specific embodiment, when using this invention, after the photosensitive resin material is fed into the feed port 2, the steam generator 61 of the constant temperature steam assembly 6 is turned on, allowing steam to enter the spaced constant temperature chamber 10 to increase the temperature inside the entire insulation material box 1. Then, part of the steam in the spaced constant temperature chamber 10 enters the first spiral blade rod 31 and the second spiral blade rod 32 through the steam pipe 62, thereby increasing the temperature of the first spiral blade rod 31 and the second spiral blade rod 32, thus providing auxiliary heating for the resin material. The various transverse heating plates 55 and longitudinal heating plates 11 are turned on to heat and melt the resin material. During this period, the heat-conducting push plate 53 can simultaneously conduct heat under the heating action of the transverse heating plates 55 and also generate heat. Furthermore, the steam in the spaced constant temperature chamber 10 can enter both sides inside the insulation material box 1 through the connecting hole 121, thereby assisting the heat-conducting push plate 53 in conducting heat and further improving the heating effect of the heat-conducting push plate 53 on the material.

[0038] During the heating process, the transmission assembly 4 can be activated, and the transmission motor 41 drives the drive gear 42, which in turn drives the first driven gear 43 and the second driven gear 44 to rotate synchronously. This allows the first helical blade rod 31 and the second helical blade rod 32 to rotate synchronously. The first helical blade rod 31 conveys the material on the left side of the insulation material box 1 downwards, while the second helical blade rod 32 conveys the material on the right side of the insulation material box 1 upwards, thus forming a mixed conveying cycle. This mixed conveying greatly improves the fluidity of the material. This fluidity, combined with the horizontal heating plates 55 and the vertical heating plates 11 erected on the outer periphery, allows the resin material to flow rapidly and be heated evenly along the horizontal heating plates 55 and the vertical heating plates 11. This increases the heating area and range of the flowing resin material while ensuring the resin material is heated evenly. The insulation material box 1 has a good heat preservation effect. When more internal material is discharged outwards, less internal material remains. It can be used in conjunction with two side pressure adjustment components 5. By pushing the two heat-conducting push plates 53 relative to each other through the telescopic push rod 51, the internal material of the insulation material box 1 is piled up towards the center, allowing the resin material to fully contact the first spiral blade rod 31 and the second spiral blade rod 32. It can also allow the horizontal heating plate 55 and the vertical heating plate 11 to concentrate together to intensively heat the material, thereby improving the heating effect of the material. In addition, the two triangular inclined plates 56 can also simultaneously pile the material upwards to contact the horizontal heating plate 55 and the vertical heating plate 11 at the bottom, and play a role in guiding and discharging the material at the middle discharge port 70. When it is necessary to discharge the material for printing products, the material of the insulation material box 1 can be drawn outwards to the print head 9 for 3D printing by controlling the pump body 71 of the discharge port 70.

[0039] It should be noted that the 3D printing thermal insulation molding device for photosensitive resin materials of the present invention mainly improves the above-mentioned structure. The functions, components and structures not mentioned can be implemented by using the components and structures in the prior art that can achieve the corresponding functions. For example, each telescopic rod can be used by the pneumatic telescopic cylinder, hydraulic telescopic cylinder or electric push rod in the prior art.

[0040] The above embodiments illustrate and describe the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A 3D printing thermal insulation molding device for photosensitive resin materials, comprising a printer housing (8), a print head (9) installed inside the printer housing (8), a thermal insulation material box (1) installed on the top of the printer housing (8), and a detachable feed port (2) located on the upper side of the thermal insulation material box (1), characterized in that: The insulation material box (1) is vertically rotatably mounted with a first spiral blade rod (31) and a second spiral blade rod (32) for mixing and stirring materials. The first spiral blade rod (31) is used to convey the material on the left side inside the insulation material box (1) downwards, and the second spiral blade rod (32) is used to convey the material on the right side inside the insulation material box (1) upwards, thereby forming an up-and-down circulating mixing and conveying of materials inside the insulation material box (1). The insulation material box (1) is provided with side pressure adjustment components (5) on the left and right sides respectively. The side pressure adjustment components (5) include a heat-conducting push plate (53) that is laterally slidably disposed inside the insulation material box (1). A guide rod (52) that penetrates through the insulation material box (1) is installed on one side of the heat-conducting push plate (53). A telescopic push rod (51) for pushing the heat-conducting push plate (53) to move left and right is installed on the outside of the insulation material box (1). When the two heat-conducting push plates (53) move relative to each other, the material is piled up to make full contact with the first spiral blade rod (31) and the second spiral blade rod (32). The heat-conducting push plates (53) of the two side pressure adjustment components (5) are each equipped with a rectangular array of multiple transverse heating plates (55) on opposite sides. The front and rear inner walls of the insulation material box (1) are equipped with longitudinal heating plates (11) arranged in a rectangular array. The longitudinal heating plates (11) are staggered from the transverse heating plates (55). The longitudinal heating plates (11) and the transverse heating plates (55) are located on the outer periphery of the first spiral blade rod (31) and the second spiral blade rod (32), so that the material that is circulated and transported inside the insulation material box (1) flows quickly and is heated evenly along the transverse heating plates (55) and the longitudinal heating plates (11). The insulation material box (1) has a spaced constant temperature cavity (10) in the middle of the four sides of the plate, so that the insulation material box (1) forms an inner frame plate (12) and an outer frame plate (13) around it. The first helical blade rod (31) and the second helical blade rod (32) both have a rod cylinder cavity (33) in the middle. A constant temperature steam assembly (6) is installed on the outside of the insulation material box (1). The constant temperature steam assembly (6) is used to inject steam into the spaced constant temperature cavity (10) and the rod cylinder cavity (33), so that the first helical blade rod (31) and the second helical blade rod (32) can rotate, transport and mix the material while heating it. The constant temperature steam assembly (6) includes a steam generator (61) and a steam pipe (62). The outlet of the steam generator (61) is connected to the spaced constant temperature chamber (10), and one side of the spaced constant temperature chamber (10) is connected to the rod cylinder chamber (33) through the steam pipe (62). An arc-shaped protrusion (34) is integrally provided on the inner side of the rod cylinder chamber (33). The steam pipe (62) is provided through the inner side of the rod cylinder chamber (33) and contacts the arc-shaped protrusion (34). When assisting in supporting the first helical blade rod (31) and the second helical blade rod (32), a gap for air outlet is formed between the inner wall of the rod cylinder chamber (33) and the outer side of the steam pipe (62). The longitudinally arranged transverse heating plates (55) are distributed in a V-shape, with the first helical blade rod (31) and the second helical blade rod (32) corresponding to the opening in the middle of the V-shape; Multiple connecting holes (121) are provided on the left and right sides of the inner frame plate (12). The spaced constant temperature cavity (10) is connected to the inner cavity of the heat insulation material box (1) outside the heat-conducting push plate (53) through the connecting holes (121).

2. The 3D printing heat-insulating molding device for photosensitive resin materials according to claim 1, characterized in that, The outer frame of the heat-conducting push plate (53) is provided with a sealing rubber pad (54), and the sealing rubber pad (54) is in close contact with the inner wall of the insulation material box (1).

3. The 3D printing heat-insulating molding device for photosensitive resin materials according to claim 2, characterized in that, Triangular inclined plates (56) are installed on opposite sides of the top of the two heat-conducting push plates (53), and the triangular inclined plates (56) are located below the horizontal heating plate (55), the first helical blade rod (31) and the second helical blade rod (32).

4. The 3D printing heat-insulating molding device for photosensitive resin materials according to claim 3, characterized in that, The bottom of the insulation material box (1) is also provided with a discharge structure (7). The discharge structure (7) includes a discharge port (70) opened at the center of the bottom of the insulation material box and a pump body (71) installed on the discharge port (70). The discharge end of the pump body (71) is equipped with a constant temperature discharge pipe (72) and is connected to the print head (9) through the constant temperature discharge pipe (72). The discharge port (70) is located between two triangular inclined plates (56).

5. A 3D printing heat-insulating molding device for photosensitive resin materials according to claim 4, characterized in that, The top of the insulation material box (1) is provided with a transmission assembly (4) for synchronously driving the rotation of the first helical blade rod (31) and the second helical blade rod (32). The transmission assembly (4) includes a transmission motor (41) installed on the top of the insulation material box (1) and a first driven gear (43) and a second driven gear (44) respectively installed on the top of the first helical blade rod (31) and the second helical blade rod (32) and meshing with each other. The motor shaft of the transmission motor (41) is equipped with a driving gear (42) for driving the rotation of the first driven gear (43), and the first driven gear (43) and the second driven gear (44) are located outside the insulation material box (1).

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