Heating trough of photocuring 3D printer

Abstract

The invention discloses a photocuring 3D printer heating trough, and belongs to the technical field of 3D printers, the photocuring 3D printer heating trough comprises a trough drum, a discharge pipe is inserted in the bottom wall of the trough drum, a filter screen for filtering incompletely molten raw materials is arranged in the trough drum, and heating wires are uniformly embedded in the side wall of the trough drum; the secondary heating device further comprises a secondary heating assembly, the secondary heating assembly comprises a mounting ring fixedly mounted on the inner side wall of the trough drum, a heating plate is fixedly mounted on the top wall of the mounting ring, and an annular plate fixedly connected with the filter screen is arranged on the mounting ring. According to the scheme, through cooperation of a cleaning plate and a heating plate, bristles can be driven to make incompletely-molten raw materials on the top wall of a filter screen disengaged from the filter screen in the rotating process of a rotating rod, so that the completely-molten raw materials conveniently flow downwards, and the incompletely-molten raw materials make contact with the heating plate under the action of centrifugal force; therefore, the heating effect of the raw materials can be further improved, and the effect of improving the printing effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printers, and more specifically to a heating trough of a light-curing 3D printer. Background Art

[0002] A photocuring 3D printer, also known as a resin 3D printer, is a device that uses ultraviolet light of a specific wavelength and intensity to irradiate liquid photosensitive resin and solidify it layer by layer to build a three-dimensional object.

[0003] When printing, the existing light-curing 3D printer needs to place liquid photosensitive resin in a material tank, and then control the computer to scan the laser layer by layer, and cure the liquid photosensitive resin under ultraviolet light to obtain a 3D model. Since the curing and molding process of photosensitive resin is greatly affected by temperature, low temperature will greatly affect the resin molding, resulting in uneven curing, which will affect the printing effect. Therefore, in order to improve the printing effect, the photosensitive resin in the material tank needs to be heated by a heating wire to ensure that the photosensitive resin in the material tank has good fluidity. However, if the photosensitive resin in the material tank cannot be heated evenly by the heating wire alone, if the photosensitive resin with poor fluidity flows to the 3D printer, it will still affect the printing effect.

[0004] In view of the above problems, some solutions have been provided in the prior art. For example, the Chinese utility model patent with announcement number CN212764808U discloses a light-curing 3D printer heating trough. The device heats the raw material through a heating box and screens the molten raw material through a screen to prevent unmelted raw material from entering the storage box, thereby effectively improving the heating uniformity and printing effect. Although the prior art can block the unmelted raw material, it still has certain limitations. If there is too much unmelted raw material, it will cause the screen to be blocked, which will seriously affect the normal flow of the raw material to the printer and reduce the printing effect. Summary of the invention

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide a heating trough for a light-curing 3D printer, which can achieve the purpose of improving the printing effect.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A light-curing 3D printer heating trough comprises a trough barrel, a discharge pipe is inserted on the bottom wall of the trough barrel, a filter screen for filtering incompletely melted raw materials is arranged inside the trough barrel, and heating wires are evenly embedded on the side wall of the trough barrel;

[0008] It also includes a secondary heating component, which includes a mounting ring fixedly mounted on the inner wall of the material trough barrel, a heating plate fixedly mounted on the top wall of the mounting ring, a ring-shaped plate fixedly connected to the filter screen on the mounting ring, a motor fixedly mounted on the top wall of the material trough barrel, a rotating rod extending into the material trough barrel fixedly mounted on the output end of the motor, a stirring rod evenly fixedly mounted on the rotating rod, a cleaning plate cooperating with the filter screen also fixedly mounted on the rotating rod, and bristles evenly fixedly mounted on the cleaning plate.

[0009] Furthermore, a mounting groove is provided on the mounting ring, a mounting plate fixedly connected to the annular plate is installed in the sliding seal in the mounting groove, and the top wall of the annular plate is fixedly connected to the filter screen, a first spring is fixedly installed between the bottom wall of the mounting plate and the mounting groove, and an inclined block cooperating with the cleaning plate is provided on the top wall of the filter screen.

[0010] Furthermore, a T-shaped groove is provided on the bottom wall of the filter screen, a connecting rod is rotatably installed in the groove, a vertical groove is provided on the rotating rod, and the connecting rod is slidingly matched with the vertical groove, a cleaning groove is provided on the connecting rod, a first connecting pipe is inserted into the cleaning groove, and a liquid supply assembly that cooperates with the first connecting pipe is provided on the rotating rod.

[0011] Furthermore, the liquid supply assembly includes an annular block fixedly slidingly sealed and mounted on the rotating rod, a connecting rod fixedly mounted on the annular block and connected to the mounting ring, a liquid inlet valve connected to the material trough barrel is inserted on the mounting plate, a liquid drain valve is also inserted on the mounting plate, a second connecting pipe is fixedly mounted on the output end of the liquid drain valve, an annular cavity connected to the second connecting pipe is opened on the annular block, and the second connecting pipe is connected to the first connecting pipe through the annular cavity.

[0012] Furthermore, an impact plate cooperating with the bristles is fixedly mounted on the top wall of the filter, a mounting block is fixedly mounted on the impact plate, a telescopic tube is fixedly mounted on the side wall of the mounting block, and a push block is fixedly mounted on the end of the telescopic tube away from the mounting block, and an air pipe connected to the telescopic tube is inserted on the bottom wall of the mounting groove.

[0013] Furthermore, a limiting rod slidably matched with the push block is fixedly mounted on the mounting block, and a vertical rod is vertically fixedly mounted on the bottom wall of the cleaning plate.

[0014] Furthermore, the side wall of the push block close to the telescopic tube is an inclined surface.

[0015] Furthermore, the inclined blocks are symmetrically arranged in two groups around the rotating rod.

[0016] Furthermore, heating rods are evenly and fixedly installed on the bottom wall of the trough barrel.

[0017] Furthermore, the outer jacket of the trough barrel is provided with a heat-insulating cover.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) In this solution, the cleaning plate and the heating plate cooperate to drive the bristles to separate the unmelted raw materials on the top wall of the filter from the filter during the rotation of the rotating rod, thereby facilitating the downward flow of the completely melted raw materials. In addition, under the action of centrifugal force, the unmelted raw materials will contact the heating plate, thereby further improving the heating effect of the raw materials and improving the printing effect.

[0020] (2) This solution provides a cleaning groove. When the mounting plate moves downward, the raw material located above the mounting plate in the mounting groove is driven to flow into the annular cavity through the drain valve and the second connecting pipe, and then flows into the cleaning groove through the first connecting pipe on the annular cavity. Finally, the raw material passes through the cleaning groove and flows to the top of the filter. When the completely molten raw material passes through the filter, the uncompletely molten raw material mixed in the gap of the filter can be driven to break away from the gap of the filter, thereby further ensuring that the completely molten raw material can smoothly flow downward through the filter, further improving the printing effect.

[0021] (3) In this scheme, a push block is provided. When the mounting plate moves downward, the gas in the space below the mounting plate in the mounting groove is squeezed and flows into the telescopic tube through the air pipe. Then, the pressure in the telescopic tube increases. Under the action of the pressure, the telescopic tube stretches and drives the push block to move. Then, during the movement of the push block, the raw material that is out of contact with the bristles can be driven to move toward the heating plate, thereby further improving the heating effect of the raw material and further improving the printing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 is a cross-sectional view of the present invention;

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0026] Figure 5 For the present invention Figure 2 Enlarged view of point C in the middle;

[0027] Figure 6 For the present invention Figure 2 Enlarged view of point D in the middle;

[0028] Figure 7 It is a top cross-sectional view of the impact plate, the mounting block, the telescopic tube and the push block of the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. trough barrel; 2. discharge pipe; 3. filter screen; 4. heating wire; 501. mounting ring; 502. heating plate; 503. annular plate; 504. motor; 505. rotating rod; 506. stirring rod; 507. cleaning plate; 508. brush; 601. mounting groove; 602. mounting plate; 603. first spring; 604. inclined block; 701. groove; 702. vertical groove; 703. first A connecting pipe; 704, a connecting rod; 705, a cleaning tank; 801, an annular block; 802, a connecting rod; 803, a liquid inlet valve; 804, a liquid discharge valve; 805, a second connecting pipe; 806, an annular cavity; 901, an impact plate; 902, a mounting block; 903, a telescopic tube; 904, a push block; 905, an air pipe; 10, a limiting rod; 11, a vertical rod; 12, a heating rod; 13, a heat preservation cover. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 7 A light-curing 3D printer heating trough comprises a trough barrel 1, a discharge pipe 2 is inserted on the bottom wall of the trough barrel 1, a filter screen 3 for filtering incompletely melted raw materials is arranged inside the trough barrel 1, and heating wires 4 are evenly embedded on the side walls of the trough barrel 1;

[0033] It also includes a secondary heating component, which includes a mounting ring 501 fixedly mounted on the inner wall of the material trough barrel 1, a heating plate 502 fixedly mounted on the top wall of the mounting ring 501, an annular plate 503 fixedly connected to the filter screen 3 is provided on the mounting ring 501, a motor 504 is fixedly mounted on the top wall of the material trough barrel 1, a rotating rod 505 extending into the material trough barrel 1 is fixedly mounted on the output end of the motor 504, a stirring rod 506 is evenly fixedly mounted on the rotating rod 505, a cleaning plate 507 cooperating with the filter screen 3 is also fixedly mounted on the rotating rod 505, and bristles 508 are evenly fixedly mounted on the cleaning plate 507.

[0034] The mounting ring 501 is provided with a mounting groove 601, and a mounting plate 602 fixedly connected to the annular plate 503 is slidingly sealed in the mounting groove 601, and the top wall of the annular plate 503 is fixedly connected to the filter screen 3, and a first spring 603 is fixedly installed between the bottom wall of the mounting plate 602 and the mounting groove 601, and an inclined block 604 cooperating with the cleaning plate 507 is provided on the top wall of the filter screen 3.

[0035] When in use, first open the plug plate on the top wall of the material trough barrel 1, and pour the raw material into the material trough barrel 1, and then close the plug plate. At this time, the heating wire 4 can heat the raw material in the material trough barrel 1. At the same time, the motor 504 drives the stirring rod 506 to stir the raw material in the material trough barrel 1 through the rotating rod 505, thereby improving the heating effect of the raw material. Then, under the action of gravity, the molten raw material flows through the filter screen 3 to the discharge pipe 2 connected to the printer. At this time, the raw material that is not completely melted is resisted by the filter screen 3. During the rotation of the rotating rod 505, the cleaning plate 507 can be driven to rotate. During the rotation of the cleaning plate 507, the bristles 5 08 rotates, and then in the process of the rotation of the bristles 508, they gradually come into contact with the unmelted raw material on the top wall of the filter screen 3, and drive the unmelted raw material to rotate, and then under the action of centrifugal force, the unmelted raw material moves in the direction away from the rotating rod 505, thereby effectively preventing the filter screen 3 from being blocked and affecting the normal flow of the molten raw material through the filter screen 3 to the discharge pipe 2 connected to the printer, and then in the process of the rotation of the unmelted raw material, it gradually comes into contact with the heating plate 502, at this time, the heating plate 502 can centrally heat the unmelted raw material, further improving the heating effect of the raw material, and playing a role in improving the printing effect.

[0036] In the initial state, the first spring 603 is in a free extension state. During the rotation of the cleaning plate 507, the first spring 603 gradually contacts the inclined surface of the inclined block 604 and applies a thrust to the inclined surface of the inclined block 604. Then, under the action of the thrust, the inclined block 604 drives the filter screen 3 to move downward. During the downward movement of the filter screen 3, the mounting plate 602 is driven downward by the annular plate 503. At this time, the first spring 603 is compressed and has a tendency to recover. During the downward movement of the filter screen 3, the top wall of the filter screen 3 is flush with the top wall of the heating plate 502. At this time, the completely molten raw material can break away from the contact with the heating plate 502 and flow downward through the filter screen 3, further improving the heating effect of the raw material. Then, when After the cleaning plate 507 is out of contact with the inclined block 604, the first spring 603 stretches and drives the filter 3 to move upward through the mounting plate 602 and the annular plate 503, that is, the filter 3 can be driven to shake up and down during the rotation of the cleaning plate 507. Since the bristles 508 are elastic, the bristles 508 can still fit with the top wall of the filter 3 during the downward movement of the filter 3. Then, during the shaking of the filter 3, the unmelted raw material on the filter 3 can be driven to shake, thereby making the unmelted raw material loose, which is convenient for the bristles 508 to clean the unmelted raw material, thereby ensuring that the molten raw material flows downward through the filter 3 normally, further improving the printing effect.

[0037] like Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, a T-shaped groove 701 is provided on the bottom wall of the filter 3, a connecting rod 704 is rotatably installed in the groove 701, a vertical groove 702 is provided on the rotating rod 505, and the connecting rod 704 and the vertical groove 702 are slidably matched, a cleaning groove 705 is provided on the connecting rod 704, a first connecting pipe 703 is inserted into the cleaning groove 705, and a liquid supply component that cooperates with the first connecting pipe 703 is provided on the rotating rod 505.

[0038] The liquid supply assembly includes an annular block 801 fixedly mounted on the rotating rod 505 with a sliding seal, a connecting rod 802 fixedly mounted on the annular block 801 and fixedly connected to the mounting ring 501, a liquid inlet valve 803 connected to the material trough barrel 1 is inserted on the mounting plate 602, a liquid discharge valve 804 is also inserted on the mounting plate 602, a second connecting pipe 805 is fixedly mounted on the output end of the liquid discharge valve 804, an annular cavity 806 connected to the second connecting pipe 805 is opened on the annular block 801, and the second connecting pipe 805 is connected to the first connecting pipe 703 through the annular cavity 806.

[0039] By adopting the above technical solution, the connecting rod 704 is driven to rotate through the vertical groove 702 during the rotation of the rotating rod 505. Since the connecting rod 704 is rotated and matched with the filter screen 3 through the T-shaped groove 701, the connecting rod 704 is always in contact with the filter screen 3 during the shaking of the filter screen 3. Then, during the downward movement of the mounting plate 602, the pressure of the space above the mounting plate 602 in the mounting groove 601 is reduced. Then, under the action of the pressure, the space above the mounting plate 602 in the mounting groove 601 absorbs the molten raw material under the filter screen 3 through the liquid inlet valve 803. Then, when the first spring 603 stretches and drives the mounting plate 602 to move upward, The space above the mounting plate 602 in the mounting groove 601 is squeezed, and then the raw material in the space above the mounting plate 602 in the mounting groove 601 flows into the annular cavity 806 through the drain valve 804 and the second connecting pipe 805, and flows into the cleaning groove 705 through the first connecting pipe 703 on the annular cavity 806. Finally, the raw material passes through the filter 3 through the cleaning groove 705 and flows to the top of the filter 3. In the process of the completely melted raw material passing through the filter 3, the uncompletely melted raw material mixed in the gap of the filter 3 can be driven to break away from the contact with the gap of the filter 3, thereby further ensuring that the completely melted raw material can smoothly flow downward through the filter 3, and further improving the printing effect.

[0040] like Figure 5 , Figure 7 As shown, an impact plate 901 cooperating with the bristles 508 is fixedly mounted on the top wall of the filter 3, a mounting block 902 is fixedly mounted on the impact plate 901, a telescopic tube 903 is fixedly mounted on the side wall of the mounting block 902, and a push block 904 is fixedly mounted on the end of the telescopic tube 903 away from the mounting block 902, and an air pipe 905 connected to the telescopic tube 903 is inserted on the bottom wall of the mounting groove 601.

[0041] A limiting rod 10 slidably matched with the pushing block 904 is fixedly mounted on the mounting block 902 , and a vertical rod 11 is vertically fixedly mounted on the bottom wall of the cleaning plate 507 .

[0042] The side wall of the push block 904 close to the telescopic tube 903 is an inclined surface.

[0043] By adopting the above technical scheme, in the process of the brush plate driving the bristles 508 to rotate, the bristles 508 will hit the impact plate 901, and then under the action of inertia, the raw material that is not completely melted adhering to the bristles 508 will be separated from the bristles 508, thereby improving the cleaning effect of the bristles 508 on the filter 3, and then in the process of the mounting plate 602 moving downward, the gas in the space below the mounting plate 602 in the mounting groove 601 is squeezed and flows into the telescopic tube 903 through the air pipe 905, and then the pressure in the telescopic tube 903 increases. Under the action of pressure, the telescopic tube 903 stretches and drives the push block 904 to move, and then in the process of the push block 904 moving, it can drive the raw material that is separated from the bristles 508 to move toward the heating plate 502, thereby further improving the heating effect of the raw material and further improving the printing effect.

[0044] During the upward movement of the mounting plate 602, the pressure in the space below the mounting plate 602 in the mounting groove 601 decreases. Then, under the action of the pressure, the space below the mounting plate 602 in the mounting groove 601 sucks air from the telescopic tube 903 through the suction tube. Then, the telescopic tube 903 contracts and drives the push block 904 to reset, thereby preparing for work again.

[0045] During the rotation of the cleaning plate 507, the vertical rod 11 can be driven to rotate along the top wall of the heating plate 502, and then the raw materials on the top wall of the heating plate 502 can be stirred during the rotation of the vertical rod 11, thereby improving the heating effect of the raw materials. In addition, during the movement of the push block 904, a limit rod 10 is set to ensure that the push block 904 moves along the side wall of the impact plate 901 and the top wall of the filter screen 3 during the movement, thereby ensuring that the push block 904 can drive the incompletely melted raw materials to move toward the heating plate 502 during the movement, further improving the heating of the incompletely melted raw materials.

[0046] During the process of the telescopic tube 903 contracting and driving the push block 904 to reset, the side wall of the push block 904 close to the telescopic tube 903 is made into an inclined surface. Then, during the process of the push block 904 resetting, the raw material that is not completely melted moves along the inclined surface toward the side of the push block 904 away from the telescopic tube 903, so that when the push block 904 works again, the raw material that is not completely melted can be pushed toward the heating plate 502.

[0047] like Figure 2 As shown, the inclined blocks 604 are symmetrically arranged in two groups around the rotating rod 505.

[0048] By adopting the above technical solution, when the cleaning plate 507 drives the filter 3 to move downward through the inclined block 604, the two sets of inclined blocks 604 are symmetrically arranged to balance the forces on both sides of the filter 3, thereby effectively preventing the filter 3 from tilting and getting stuck and unable to move, thereby ensuring the normal up and down movement of the filter 3.

[0049] like Figure 2 As shown, heating rods 12 are evenly and fixedly installed on the bottom wall of the trough barrel 1.

[0050] The outer shell of the trough barrel 1 is provided with a heat-insulating cover 13 .

[0051] By adopting the above technical solution, after the raw material flows through the filter 3 to the bottom of the material trough barrel 1, the heating rods 12 are evenly arranged to ensure that the raw material under the filter 3 is evenly heated, thereby effectively preventing the raw material from solidifying due to cooling and affecting the printing effect; at the same time, by arranging the heat preservation cover 13, the raw material in the material trough barrel 1 can be kept warm and the heat loss can be reduced, thereby reducing energy loss, and preventing the molten raw material from solidifying due to cooling, thereby improving the printing effect.

[0052] Instructions for use: When in use, first open the plug plate on the top wall of the material trough barrel 1, and pour the raw material into the material trough barrel 1, then close the plug plate, at this time the heating wire 4 can heat the raw material in the material trough barrel 1, at the same time, the motor 504 drives the stirring rod 506 to stir the raw material in the material trough barrel 1 through the rotating rod 505, and then the molten raw material flows through the filter 3 to the discharge pipe 2 connected to the printer under the action of gravity. At this time, the raw material that is not completely melted is resisted by the filter 3, and the cleaning plate 507 can be driven to rotate during the rotation of the rotating rod 505, and the bristles 508 can be driven to rotate during the rotation of the cleaning plate 507, and then the bristles 508 gradually contact the unmelted raw material on the top wall of the filter 3 during the rotation of the bristles 508. The raw material contacts with the cleaning plate 507 and drives the raw material that is not completely melted to rotate. Then, under the action of centrifugal force, the raw material that is not completely melted moves in the direction away from the rotating rod 505, thereby effectively preventing the filter screen 3 from being blocked and affecting the molten raw material from flowing normally through the filter screen 3 to the discharge pipe 2 connected to the printer. Then, during the rotation of the raw material that is not completely melted, it gradually contacts with the heating plate 502. At this time, the heating plate 502 can heat the raw material that is not completely melted in a centralized manner. During the rotation of the cleaning plate 507, the filter screen 3 can be driven to shake up and down through the inclined block 604. The bristles 508 are elastic. During the downward movement of the filter screen 3, the bristles 508 can still fit with the top wall of the filter screen 3. Then, during the shaking of the filter screen 3 It can drive the raw materials that are not completely melted on the filter screen 3 to shake, so that the raw materials that are not completely melted become loose; in the process that the first spring 603 stretches and drives the mounting plate 602 to move upward, the raw materials in the mounting groove 601 located in the space above the mounting plate 602 flow into the annular cavity 806 through the drain valve 804 and the second connecting pipe 805, and flow into the cleaning groove 705 through the first connecting pipe 703 on the annular cavity 806, and finally the raw materials pass through the filter screen 3 through the cleaning groove 705 and flow to the top of the filter screen 3. In the process that the completely melted raw materials pass through the filter screen 3, the incompletely melted raw materials mixed in the gap of the filter screen 3 can be driven to break away from the gap of the filter screen 3; when the brush plate drives the bristles 50 During the rotation of 8, the bristles 508 will hit the impact plate 901, and then the incompletely melted raw materials adhered to the bristles 508 will be separated from the bristles 508 due to the action of inertia, thereby improving the cleaning effect of the bristles 508 on the filter 3, and then in the process of the mounting plate 602 moving downward, the gas in the space below the mounting plate 602 in the mounting groove 601 is squeezed and flows into the telescopic tube 903 through the air pipe 905, and then the pressure in the telescopic tube 903 increases. Under the action of the pressure, the telescopic tube 903 stretches and drives the push block 904 to move, and then in the process of the push block 904 moving, the raw materials that are separated from the bristles 508 can be driven to move toward the heating plate 502.

[0053] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heating trough of a photocurable 3D printer, comprising a trough barrel (1), a discharge pipe (2) inserted on the bottom wall of the trough barrel (1), a filter screen (3) for filtering incompletely melted raw materials arranged inside the trough barrel (1), and heating wires (4) evenly embedded on the side walls of the trough barrel (1); Features: The invention also comprises a secondary heating component, wherein the secondary heating component comprises a mounting ring (501) fixedly mounted on the inner wall of the trough barrel (1), a heating plate (502) fixedly mounted on the top wall of the mounting ring (501), an annular plate (503) fixedly connected to the filter screen (3) being provided on the mounting ring (501), a motor (504) fixedly mounted on the top wall of the trough barrel (1), a rotating rod (505) extending into the trough barrel (1) being fixedly mounted on the output end of the motor (504), a stirring rod (506) being evenly fixedly mounted on the rotating rod (505), a cleaning plate (507) cooperating with the filter screen (3) being also fixedly mounted on the rotating rod (505), and bristles (508) being evenly fixedly mounted on the cleaning plate (507).

2. A light-curing 3D printer heating trough according to claim 1, characterized in that: The mounting ring (501) is provided with a mounting groove (601), a mounting plate (602) fixedly connected to the annular plate (503) is slidably sealed and mounted in the mounting groove (601), the top wall of the annular plate (503) is fixedly connected to the filter screen (3), a first spring (603) is fixedly mounted between the bottom wall of the mounting plate (602) and the mounting groove (601), and an inclined block (604) cooperating with the cleaning plate (507) is provided on the top wall of the filter screen (3).

3. A light-curing 3D printer heating trough according to claim 2, characterized in that: A T-shaped groove (701) is provided on the bottom wall of the filter screen (3), a connecting rod (704) is rotatably installed in the groove (701), a vertical groove (702) is provided on the rotating rod (505), and the connecting rod (704) and the vertical groove (702) are slidably matched, a cleaning groove (705) is provided on the connecting rod (704), a first connecting pipe (703) is inserted into the cleaning groove (705), and a liquid supply component matched with the first connecting pipe (703) is provided on the rotating rod (505).

4. A light-curing 3D printer heating trough according to claim 3, characterized in that: The liquid supply assembly comprises an annular block (801) fixedly mounted on a rotating rod (505) in a sliding seal, a connecting rod (802) fixedly mounted on the annular block (801) and fixedly connected to the mounting ring (501), a liquid inlet valve (803) connected to the material trough barrel (1) inserted on the mounting plate (602), a liquid discharge valve (804) also inserted on the mounting plate (602), a second connecting pipe (805) fixedly mounted on the output end of the liquid discharge valve (804), an annular cavity (806) connected to the second connecting pipe (805) opened on the annular block (801), and the second connecting pipe (805) is connected to the first connecting pipe (703) through the annular cavity (806).

5. A light-curing 3D printer heating trough according to claim 4, characterized in that: An impact plate (901) cooperating with the bristles (508) is fixedly mounted on the top wall of the filter (3), a mounting block (902) is fixedly mounted on the impact plate (901), a telescopic tube (903) is fixedly mounted on the side wall of the mounting block (902), and a push block (904) is fixedly mounted on one end of the telescopic tube (903) away from the mounting block (902), and an air pipe (905) connected to the telescopic tube (903) is inserted on the bottom wall of the mounting groove (601).

6. A light-curing 3D printer heating trough according to claim 5, characterized in that: A limiting rod (10) that slidably cooperates with the push block (904) is fixedly mounted on the mounting block (902), and a vertical rod (11) is vertically fixedly mounted on the bottom wall of the cleaning plate (507).

7. A light-curing 3D printer heating trough according to claim 5, characterized in that: The side wall of the push block (904) close to the telescopic tube (903) is an inclined surface.

8. A light-curing 3D printer heating trough according to claim 2, characterized in that: The inclined blocks (604) are symmetrically arranged in two groups around the rotating rod (505).

9. A light-curing 3D printer heating trough according to claim 1, characterized in that: Heating rods (12) are evenly and fixedly mounted on the bottom wall of the trough barrel (1).

10. A light-curing 3D printer heating trough according to claim 1, characterized in that: The outer shell of the trough barrel (1) is provided with a heat-insulating cover (13).

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