A heating trough for a light-curing 3D printer

Abstract

The present invention discloses a light-curing 3D printer heating trough, which belongs to the technical field of 3D printers, including a trough barrel, a discharge pipe inserted on the bottom wall of the trough barrel, a filter screen for filtering incompletely melted raw materials provided inside the trough barrel, and heating wires evenly embedded on the side walls of the trough barrel; and a secondary heating component, the secondary heating component including a mounting ring fixedly mounted on the inner side wall of the trough barrel, a heating plate fixedly mounted on the top wall of the mounting ring, and an annular plate fixedly connected to the filter screen provided on the mounting ring. This solution can drive the bristles to separate the incompletely melted raw materials on the top wall of the filter screen from contact with the filter screen during the rotation of the rotating rod through the cooperation between the cleaning plate and the heating plate, thereby facilitating the downward flow of the incompletely melted raw materials, and the incompletely melted raw materials will contact the heating plate under the action of centrifugal force, thereby further improving the heating effect of the raw materials and playing a role in improving the printing effect.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printers, and more particularly 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, solidifying it layer by layer to build a three-dimensional object.

[0003] When printing, existing light-curing 3D printers need to place liquid photosensitive resin in a material tank, and then a computer-controlled laser scans layer by layer. The liquid photosensitive resin is cured by 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 in turn affects 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 simply using the heating wire, if the photosensitive resin with poor fluidity flows into the 3D printer, it will still affect the printing effect.

[0004] In response to 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 materials through a heating box and screens the molten raw materials through a screen to prevent unmelted raw materials from entering the storage box, effectively improving heating uniformity and printing effect. Although the prior art can block unmelted raw materials, 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 raw materials to the printer and reduce the printing effect. Summary of the Invention

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

[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 into the bottom wall of the trough barrel, a filter screen is provided inside the trough barrel for filtering incompletely melted raw materials, and heating wires are evenly embedded on the side walls 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 slides 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 mounted on the rotating rod with a sliding seal, a connecting rod fixedly mounted on the annular block and connected to the mounting ring, an inlet valve connected to the material trough barrel is inserted on the mounting plate, a drain valve is also inserted on the mounting plate, a second connecting pipe is fixedly mounted on the output end of the 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 that cooperates with the bristles is fixedly installed on the top wall of the filter, a mounting block is fixedly installed on the impact plate, a telescopic tube is fixedly installed on the side wall of the mounting block, and a push block is fixedly installed 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 that is 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 shell 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) This solution uses the cleaning plate and the heating plate 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 opens a cleaning trough. When the mounting plate moves downward, the raw material above the mounting plate in the mounting trough is driven to flow into the annular cavity through the drain valve and the second connecting pipe, and then flows into the cleaning trough through the first connecting pipe on the annular cavity. Finally, the raw material passes through the cleaning trough and flows to the top of the filter. When the completely melted raw material passes through the filter, the unmelted 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 melted raw material can smoothly flow downward through the filter, further improving the printing effect.

[0021] (3) This solution sets a push block. During the downward movement of the mounting plate, the gas in the mounting groove and the space below the mounting plate 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. 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 This is a top sectional view of the impact plate, mounting block, telescopic tube, and push block of the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. Material trough barrel; 2. Material discharge pipe; 3. Filter; 4. Heating wire; 501. Mounting ring; 502. Heating plate; 503. Ring plate; 504. Motor; 505. Rotating rod; 506. Stirring rod; 507. Cleaning plate; 508. Brush; 601. Mounting trough; 602. Mounting plate; 603. First spring; 604. Oblique block; 701. Groove; 702. Vertical groove; 703. First A connecting pipe; 704, connecting rod; 705, cleaning tank; 801, annular block; 802, connecting rod; 803, liquid inlet valve; 804, liquid discharge valve; 805, second connecting pipe; 806, annular cavity; 901, impact plate; 902, mounting block; 903, telescopic tube; 904, push block; 905, air pipe; 10, limit rod; 11, vertical rod; 12, heating rod; 13, thermal insulation cover. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field 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 includes a trough barrel 1, a discharge pipe 2 is inserted into the bottom wall of the trough barrel 1, a filter 3 for filtering incompletely melted raw materials is provided 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 trough barrel 1, a heating plate 502 fixedly mounted on the top wall of the mounting ring 501, and an annular plate 503 fixedly connected to the filter 3 on the mounting ring 501. A motor 504 is fixedly mounted on the top wall of the trough barrel 1, and a rotating rod 505 extending into the trough barrel 1 is fixedly mounted on the output end of the motor 504, and a stirring rod 506 is evenly fixedly mounted on the rotating rod 505. A cleaning plate 507 cooperating with the filter 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 and installed in the mounting groove 601, and the top wall of the annular plate 503 is fixedly connected to the filter screen 3. 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, 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, and then the molten raw material flows through the filter 3 under the action of gravity 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 3, and the cleaning plate 507 can be driven to rotate during the rotation of the rotating rod 505, and the bristles 507 are driven to rotate during the rotation of the cleaning plate 507 08 rotates, and then in the process of the rotation of the bristles 508, it gradually contacts the unmelted raw material on the top wall of the filter 3, and drives 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 3 from being blocked and affecting the normal flow of the molten raw material through the filter 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 contacts 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 freely extended state. During the rotation of the cleaning plate 507, it 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 melted 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, during the rotation of the cleaning plate 507, the filter 3 can be driven to shake up and down. 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, and 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 slides with the vertical groove 702. A cleaning groove 705 is provided on the connecting rod 704, and a first connecting pipe 703 is inserted into the cleaning groove 705. The rotating rod 505 is provided with a liquid supply component that cooperates with the first connecting pipe 703.

[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 drain 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 drain 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, during the rotation of the rotating rod 505, the connecting rod 704 is driven to rotate through the vertical groove 702. 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 gap of the filter 3, thereby further ensuring that the completely melted raw material can smoothly pass through the filter 3 and flow downward, 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 that is slidably engaged 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 .

[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 solution, in the process of the brush plate driving the bristles 508 to rotate, the bristles 508 will collide with the impact plate 901, and then under the action of inertia, the unmelted raw materials adhered 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 materials that are separated from the bristles 508 to move toward the heating plate 502, thereby further improving the heating effect of the raw materials 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 draws 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 unmelted raw materials to move toward the heating plate 502 during the movement, further improving the heating of the unmelted 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, thereby facilitating the push block 904 to work again and push the uncompleted melted raw material 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, in the process of the cleaning plate 507 driving the filter 3 to move downward through the inclined block 604, the two sets of inclined blocks 604 are symmetrically arranged, so that the forces on both sides of the filter 3 can be balanced, 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 passes through the filter 3 and flows to the bottom of the material trough barrel 1, the heating rods 12 are evenly arranged to ensure that the raw material below 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 trough barrel 1, and pour the raw materials into the trough barrel 1, then close the plug plate. At this time, the heating wire 4 can heat the raw materials in the trough barrel 1. At the same time, the motor 504 drives the stirring rod 506 to stir the raw materials in the trough barrel 1 through the rotating rod 505. Then, under the action of gravity, the molten raw materials flow through the filter 3 to the discharge pipe 2 connected to the printer. At this time, the raw materials that are not completely melted are resisted by the filter 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 508 are driven to rotate. Then, during the rotation of the bristles 508, they gradually mix with the unmelted raw materials on the top wall of the filter 3. 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 3 from being blocked and affecting the normal flow of the molten raw material through the filter 3 to the discharge pipe 2 connected to the printer. Then, during the rotation of the incompletely melted raw material, it gradually contacts with the heating plate 502. At this time, the heating plate 502 can heat the incompletely melted raw material in a centralized manner. During the rotation of the cleaning plate 507, the filter 3 can be driven to shake up and down by the inclined block 604. The bristles 508 are elastic. During the downward movement of the filter 3, the bristles 508 can still fit with the top wall of the filter 3. Then, during the shaking of the filter 3 It can drive the unmelted raw materials on the filter screen 3 to shake, thereby making the unmelted raw materials loose; in the process of the first spring 603 stretching and driving the mounting plate 602 to move upward, the raw materials in the space above the mounting plate 602 in the mounting groove 601 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 cleaning groove 705 to pass through the filter screen 3 and flow to the top of the filter screen 3. In the process of the completely melted raw materials passing through the filter screen 3, the unmelted 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 unmelted raw materials adhered to the bristles 508 will be separated from the bristles 508 by 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 description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A light-curing 3D printer heating trough, comprising a trough barrel, a discharge pipe inserted into the bottom wall of the trough barrel, a filter screen disposed within the trough barrel for filtering incompletely melted raw materials, and heating wires uniformly embedded in the side walls of the trough barrel; characterized in that: It also includes a secondary heating assembly, which includes a mounting ring fixedly mounted on the inner wall of the trough barrel, a heating plate fixedly mounted on the top wall of the mounting ring, an annular plate fixedly connected to the filter screen on the mounting ring, a motor fixedly mounted on the top wall of the trough barrel, a rotating rod extending into the trough barrel fixedly mounted on the output end of the motor, a stirring rod evenly fixedly mounted on the rotating rod, a cleaning plate matched with the filter screen also fixedly mounted on the rotating rod, and bristles evenly fixedly mounted on the cleaning plate; The mounting ring is provided with a mounting groove, in which a mounting plate fixedly connected to the annular plate is slidingly and sealably mounted, and the top wall of the annular plate is fixedly connected to the filter screen, a first spring is fixedly mounted 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; An impact plate that cooperates with the bristles is fixedly installed on the top wall of the filter screen, a mounting block is fixedly installed on the impact plate, a telescopic tube is fixedly installed on the side wall of the mounting block, and a push block is fixedly installed 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; A limiting rod that slides with the push block is fixedly installed on the mounting block, and a vertical rod is vertically fixedly installed on the bottom wall of the cleaning plate; The side wall of the push block close to the telescopic tube is an inclined surface.

2. A light-curing 3D printer heating trough according to claim 1, characterized in that: 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 and the vertical groove are slidably matched, 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.

3. A light-curing 3D printer heating trough according to claim 2, characterized in that: The liquid supply assembly includes an annular block fixedly mounted on the rotating rod with a sliding seal, a connecting rod fixedly mounted on the annular block and fixedly connected to the mounting ring, an inlet valve connected to the material trough barrel is inserted into the mounting plate, a drain valve is also inserted into the mounting plate, a second connecting pipe is fixedly mounted on the output end of the 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.

4. A light-curing 3D printer heating trough according to claim 1, characterized in that: There are two groups of inclined blocks symmetrically arranged around the rotating rod.

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

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

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