A 3D printing workbench that is easy to demould

Abstract

The present invention relates to the technical field of 3D printing workbenches, and specifically to a 3D printing workbench for convenient demoulding, comprising a fixed frame, a moving mechanism installed on the fixed frame, an oiling mechanism located at the bottom of the coating mechanism installed on the moving mechanism, a dust cleaning mechanism provided on the control mechanism, and a rotating mechanism installed on the fixed plate; before printing, a suitable demoulding agent can be selected according to the printed material, a corresponding electric push rod is started to lift up the demoulding agent box, and the demoulding agent inside the demoulding agent box can adsorb the demoulding agent after contacting with the sponge pad on the corresponding fixed shaft, and further the demoulding agent box is reset, and a second motor is started to drive the turntable to rotate ninety degrees clockwise or counterclockwise, so as to realize that the upper protrusion presses the lower protrusion, and the third motor drives the screw rod to rotate to realize the movement of the slide on the fixed plate, so that the sponge pad can apply the suitable demoulding agent to the surface of the fixed plate.

Description

Technical Field

[0001] The invention relates to the technical field of 3D printing workbenches, in particular to a 3D printing workbench which is convenient for demoulding. Background Art

[0002] 3D printing is a type of rapid prototyping technology. It is a technology that uses digital model files as the basis, uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. 3D printing is usually achieved using digital technology material printers. It is often used to make models in the fields of mold manufacturing, industrial design, etc., and later gradually used for direct manufacturing of some products. There are already parts printed using this technology. The 3D printing workbench is installed at the bottom of the printer to place the printed model.

[0003] However, the current 3D printer workbench is a horizontally movable placement plate installed at the bottom of the printer as a workbench. When the printer prints a model, it will print upward based on the table, and the bottom of the model will be directly bonded to the surface of the workbench. Before printing, the corresponding release agent is not selected according to the type of printed material to apply the release agent to the table, and the bottom of the printed model will be bonded to the workbench. When demolding, the bottom of the model is repeatedly scraped off by a spatula, which increases the difficulty of demolding. In addition, the workbench is a rectangular metal plate, and the workbench and the moving mechanism can only move horizontally. When demolding, the bottom of the model needs to be scraped off by a spatula at 360 degrees. The model cannot be rotated, and the bottom of the model needs to be scraped off in multiple directions, which is cumbersome. Before printing, the debris on the table is generally cleaned with a brush. Some debris with strong adsorption and sticking to the table are difficult to be cleaned with a brush. If the model and the debris are bonded together during printing, the density of the model will be affected. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a 3D printing workbench that is convenient for demoulding.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a 3D printing workbench that is convenient for demoulding, comprising a fixed frame, a moving mechanism installed on the fixed frame, the moving mechanism is fixedly connected to a fixed plate, the fixed plate is installed with a control mechanism, the control mechanism is installed with a smearing mechanism, the moving mechanism is installed with an oiling mechanism located at the bottom of the smearing mechanism, the control mechanism is provided with a dust cleaning mechanism, and a rotating mechanism is installed on the fixed plate; the control mechanism comprises a slide, the fixed plate is slidably connected to the slide, a third motor is installed on one side of the fixed plate, a screw rod connected to the output end of the third motor is rotatably connected to the fixed plate, the screw rod is threadedly connected to the slide, a second motor is installed on the top of the slide, and the output end of the second motor is fixedly connected to The swivel plate has an upper protrusion fixedly connected to the bottom of the turntable, and side plates are relatively fixedly connected to the two sides of the slide frame. The two side plates are slidably connected to limit rods, and a first spring is clamped between the limit rods and the side plates. The bottoms of the two groups of limit rods are fixedly connected to the bottom plate, and the two bottom plates are fixedly connected to fixed columns located at the bottom of the turntable. The two opposite fixed columns are fixedly connected with lower protrusions of a hemispherical structure, and the distance from the axis of the turntable to the upper protrusion is equal to the distance from the axis of the turntable to the lower protrusion; the upper protrusion and the two lower protrusions are distributed in an isosceles triangle, and the smearing mechanism includes a connecting plate, and the two ends of the two bottom plates are fixedly connected to connecting plates, and the two opposite connecting plates are fixedly connected to a fixed shaft, and a plurality of sponge pads are equidistantly provided on the fixed shaft.

[0006] Specifically, the control mechanism further includes side rods, and two side rods slidably connected to the slides are fixedly connected to the two base plates.

[0007] Specifically, the smearing mechanism also includes a plurality of rotating grooves, a plurality of rotating grooves with annular structures are equidistantly provided on the fixed shaft, arc-shaped magnets are slidably connected inside the plurality of rotating grooves, the magnets are adsorbed on the fixed shaft, the sponge pads are bonded to the magnets, and two adjacent sponge pads are in contact with each other.

[0008] Specifically, the smearing mechanism further includes bolts and bolt holes, a plurality of bolts are vertically and equidistantly threadedly connected to the fixed shaft, and bolt holes are formed on the sides of the plurality of magnets.

[0009] Specifically, the oiling mechanism includes two slide grooves, two groups of slide grooves are relatively opened on the fixed plate, and the two groups of slide grooves are slidably connected with release agent boxes. Two groups of electric push rods are installed on the moving mechanism, and the two groups of electric push rods respectively contact the bottom of two release agent boxes. The two release agent boxes are located at the bottom of two fixed shafts.

[0010] Specifically, the dust cleaning mechanism includes two pressure rods, and the two pressure rods are symmetrically slidably connected to the slide frame about the second motor. A third spring is clamped between the two pressure rods and the slide frame. The bottoms of the two pressure rods are fixedly connected with pressure plates, and the two pressure plates are in contact with the bottoms of two bottom plates. The ends of the two pressure plates are vertically fixedly connected with top columns, and the bottoms of the two top columns are fixedly connected with buffer rods, and the outer sides of the two buffer rods are slidably connected with bottom columns, and a dust collecting cylinder is rotatably connected between the two bottom columns.

[0011] Specifically, the dust cleaning mechanism further includes a fourth spring, and the fourth spring is clamped between the two bottom columns and the top column.

[0012] Specifically, the rotating mechanism includes a worm gear plate, which is rotatably connected to the fixed plate. The surface of the worm gear plate is flush with the surface of the fixed plate. A fourth motor is installed on the side of the fixed plate. The output end of the fourth motor is connected to a worm rotatably connected to the fixed plate through a coupling.

[0013] Specifically, the rotating mechanism also includes a support plate, which is slidably connected to the surface opening of the worm gear plate, and a plurality of second springs are clamped between the support plate and the worm gear plate. A level is installed on the surface of the support plate, and the surface of the level is flush with the surface of the support plate.

[0014] Specifically, the moving mechanism includes two support rods, a slide plate is slidably connected to the two support rods, the slide plate is fixedly connected to a fixed plate, two groups of electric push rods are installed on the slide plate, a bearing seat is installed on one side of the fixed frame, a first motor is installed on the other side of the fixed frame, a belt is installed between the first motor and the bearing seat, and the belt is fixed to the slide plate.

[0015] The beneficial effects of the present invention are:

[0016] (1) The present invention discloses a 3D printing workbench that facilitates demoulding. A control mechanism is slidably connected to a fixed plate. Before printing a model through a 3D printer, a suitable demoulding agent can be selected according to the printing material. The corresponding electric push rod is started to lift the demoulding agent box. Different demoulding agent boxes have different corresponding demoulding agents. The demoulding agent inside the demoulding agent box can adsorb the demoulding agent after contacting the corresponding sponge pad on the fixed shaft. The demoulding agent box is further reset, and the second motor is started to drive the turntable to rotate ninety degrees clockwise or counterclockwise, so that the upper protrusion presses the lower protrusion, so that one of the pressure plates descends to drive the sponge pad on the fixed shaft to be flush with the surface of the fixed plate. The third motor drives the screw rod to rotate to realize the movement of the slide on the fixed plate, so that the sponge pad can apply a suitable demoulding agent to the surface of the fixed plate, which is convenient for the subsequent separation of the model from the fixed plate.

[0017] (2) The 3D printing workbench for convenient demoulding described in the present invention has two lower protrusions and one upper protrusion, which are designed to control the descent of different sponge pads respectively, so as to facilitate the application of different demoulding agents. A plurality of magnets are rotated equidistantly on the fixed shaft, so that the application area of ​​the demoulding agent can be controlled according to the area of ​​the model to be printed. When adjusting, it is only necessary to rotate the magnet on the fixed shaft to the bottom of the fixed shaft so that the sponge pad is flush with the surface of the fixed plate, and the magnet on the bottom side of the fixed shaft can be fixed by bolts. Then, when the demoulding agent contacts the sponge pad, the sponge pad at the bottom of the fixed shaft can contact the demoulding agent, so that no waste of the demoulding agent is caused, and the sponge pad on the side of the fixed shaft will not affect the application of the demoulding agent.

[0018] (3) The present invention provides a 3D printing workbench that is convenient for demoulding. A dust cleaning mechanism is provided on the slide. No matter which sponge pad on the fixed axis is selected to apply a suitable demoulding agent, the upper protrusion on the turntable presses one of the lower protrusions. After any lower protrusion is pressed, the bottom plate will be driven down. After the bottom plate is lowered, the pressure plate will be pressed to achieve the ash sticking cylinder to descend and contact the fixed plate. As the slide moves, the ash sticking cylinder will remove debris on the fixed plate and the worm gear plate before the sponge pad applies the demoulding agent to the fixed plate, so as to avoid the debris from adhering to the model and affecting the density of the model, thereby protecting the integrity of the model.

[0019] (4) The 3D printing workbench described in the present invention is convenient for demolding. The slide is provided with a dust cleaning mechanism and the fixed plate is provided with a rotating mechanism. When demolding, the worm can be driven to rotate by the fourth motor, and the worm can further drive the worm gear plate to rotate. The worm has a self-locking function for the worm gear plate. After the model on the worm gear plate is rotated to a corresponding angle, the worm gear plate will be fixed. At this time, the bottom of the model can be scraped off and the mold can be removed by a scraper. There is no need to perform scraping operations at multiple positions when demolding. The support plate on the worm gear plate can be gently tapped to achieve misalignment between the model and the support plate, which is convenient for the entry of the scraper. The bottom of the support plate is provided with a second spring to support the model and ensure that the support plate is flush with the worm gear plate. The level on the support plate is convenient for observing whether the worm gear plate is horizontal, which is conducive to the accurate printing of the model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0022] Figure 2 It is a schematic diagram of the connection structure between the support rod and the slide plate shown in the present invention;

[0023] Figure 3 It is a schematic diagram of the connection structure of the slide, the side plate and the limit rod of the present invention;

[0024] Figure 4 It is a schematic diagram of the connection structure of the slide plate, the slide groove and the demoulding agent box of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection structure between the screw rod and the slide of the present invention;

[0026] Figure 6 It is a schematic diagram of the connection structure of the pressing plate, the top column and the fixed shaft of the present invention;

[0027] Figure 7 It is a schematic diagram of the connection structure of the bottom plate, the fixing column and the lower protrusion of the present invention;

[0028] Figure 8 It is a schematic diagram of the connection structure of the second motor, the rotating disk and the upper protrusion of the present invention;

[0029] Fig. 9 It is a schematic diagram of the connection structure of the fixing column, the lower protrusion and the upper protrusion of the present invention;

[0030] Fig.10 It is a schematic diagram of the connection structure of the fixed shaft and the magnet of the present invention;

[0031] Fig.11 It is a schematic diagram of the connection structure of the fixed shaft, bolts and magnets of the present invention;

[0032] Fig.12 It is a schematic diagram of the connection structure of the top column, the bottom column and the buffer rod of the present invention;

[0033] Fig.13 It is a schematic diagram of the connection structure of the worm wheel plate, the worm and the fixing plate of the present invention;

[0034] Fig.14 It is a schematic diagram of the connection structure of the fixing plate, the supporting plate and the second spring of the present invention.

[0035] In the figure: 1, fixed frame; 2, moving mechanism; 201, support rod; 202, first motor; 203, belt; 204, slide plate; 205, bearing seat; 3, fixed plate; 4, control mechanism; 401, slide; 402, second motor; 403, third motor; 404, side plate; 405, limit rod; 406, first spring; 407, bottom plate; 408, fixed column; 409, lower protrusion; 410, turntable; 411, screw rod; 412, side rod; 413, upper protrusion; 5, rotating mechanism; 501, fourth motor; 502, worm gear plate; 5 03. Support plate; 504. Second spring; 505. Level; 506. Worm; 6. Coating mechanism; 601. Connecting plate; 602. Fixed shaft; 603. Rotating groove; 604. Magnet; 605. Sponge pad; 606. Bolt; 607. Bolt hole; 7. Oiling mechanism; 701. Slide groove; 702. Electric push rod; 703. Demolding agent box; 8. Cleaning mechanism; 801. Pressing plate; 802. Pressing rod; 803. Third spring; 804. Dust collecting cylinder; 805. Top column; 806. Buffer rod; 807. Bottom column; 808. Fourth spring. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] like Figure 1-Figure 14As shown, a 3D printing workbench for convenient demoulding described in the present invention comprises a fixed frame 1, a moving mechanism 2 installed on the fixed frame 1, a fixed plate 3 is fixedly connected to the moving mechanism 2, a control mechanism 4 is installed on the fixed plate 3, a smearing mechanism 6 is installed on the control mechanism 4, an oiling mechanism 7 located at the bottom of the smearing mechanism 6 is installed on the moving mechanism 2, a dust cleaning mechanism 8 is provided on the control mechanism 4, and a rotating mechanism 5 is installed on the fixed plate 3; the control mechanism 4 comprises a slide 401, a slide 401 is slidably connected to the fixed plate 3, a third motor 403 is installed on one side of the fixed plate 3, and a rotary mechanism 5 is rotatably connected to the fixed plate 3. 3, the screw rod 411 is threadedly connected to the slide 401, a second motor 402 is installed on the top of the slide 401, a turntable 410 is fixedly connected to the output end of the second motor 402, an upper protrusion 413 is fixedly connected to the bottom of the turntable 410, side plates 404 are relatively fixedly connected on both sides of the slide 401, and the two side plates 404 are slidably connected with limit rods 405, a first spring 406 is clamped between the limit rods 405 and the side plates 404, the bottoms of the two groups of limit rods 405 are fixedly connected with bottom plates 407, and the two bottom plates 407 are fixedly connected with fixed columns located at the bottom of the turntable 410 408, the two opposite fixing columns 408 are fixedly connected with a lower protrusion 409 of a hemispherical structure, the distance between the axis of the turntable 410 and the upper protrusion 413 is equal to the distance between the axis of the turntable 410 and the lower protrusion 409; the upper protrusion 413 and the two lower protrusions 409 are distributed in an isosceles triangle; the smearing mechanism 6 includes a connecting plate 601, both ends of the two bottom plates 407 are fixedly connected with a connecting plate 601, and the two opposite connecting plates 601 are fixedly connected with a fixed shaft 602, and a plurality of sponge pads 605 are equidistantly arranged on the fixed shaft 602; the control mechanism 4 also includes a side rod 412, both ends of the two bottom plates 407 are fixed with a connecting plate 601, and the fixing shaft 602 is fixedly connected with a plurality of sponge pads 605; the control mechanism 4 also includes a side rod 412, Two side rods 412 are connected to the slide 401 in a sliding manner; the smearing mechanism 6 also includes a plurality of rotating grooves 603, a plurality of rotating grooves 603 with annular structures are equidistantly provided on the fixed shaft 602, arc-shaped magnets 604 are slidably connected inside the plurality of rotating grooves 603, the magnets 604 are adsorbed on the fixed shaft 602, the sponge pads 605 are bonded to the magnets 604, and two adjacent sponge pads 605 are in contact with each other; the smearing mechanism 6 also includes bolts 606 and bolt holes 607, a plurality of bolts 606 are vertically equidistantly threadedly connected to the fixed shaft 602, and bolt holes 607 are provided on the sides of the plurality of magnets 604;The oiling mechanism 7 includes two slide grooves 701, and two groups of slide grooves 701 are relatively opened on the fixed plate 3, and demoulding agent boxes 703 are slidably connected to the two groups of slide grooves 701. Two groups of electric push rods 702 are installed on the moving mechanism 2, and the two groups of electric push rods 702 are respectively in conflict with the bottom of the two demoulding agent boxes 703, and the two demoulding agent boxes 703 are located at the bottom of the two fixed shafts 602;Different demoulding agents, such as silicone oil and vaseline, are added to the inside of the two demoulding agent boxes 703. Before the 3D printer prints the model, it can select a suitable demoulding agent according to the printing material, and select the smearing width according to the bottom area of ​​the model. The sponge pad 605 is rotated to the bottom side of the fixed shaft 602 through the magnet 604, and the magnet 604 is fixed by the bolt 606 and the bolt hole 607. After confirming the demoulding agent inside the selected demoulding agent box 703, the corresponding electric push rod 702 is started to lift the demoulding agent box 703 inside the slide 701, so that the demoulding agent contacts the sponge pad 605 on the fixed shaft 602. After the sponge pad 605 is bonded with the demoulding agent, it waits for the fixed plate to be aligned. 3, the electric push rod 702 is retracted to reset the demoulding agent box 703, and the second motor 402 is further started to drive the turntable 410 to rotate ninety degrees clockwise or counterclockwise to ensure that the upper protrusion 413 can contact the lower protrusion 409 on the specified fixed column 408. When the upper protrusion 413 presses the lower protrusion 409, the bottom plate 407 is lowered, and the limit rod 405 on the side plate 404 also drops accordingly, and the first spring 406 is compressed. When the bottom plate 407 drops, it drives the two connecting plates 601 to drop, and further the fixed shaft 602 drives the sponge pad 605 with the demoulding agent to drop. At this time, the sponge pad 605 is flush with the surface of the fixed plate 3. , further start the third motor 403 to realize the screw rod 411 to drive the slide 401 to move, and with the movement of the slide 401, the sponge pad 605 at the bottom of the fixed shaft 602 applies a layer of release agent to the surfaces of the fixed plate 3, the support plate 503 and the worm plate 502, so as to facilitate the subsequent demoulding. Similarly, the second motor 402 is started to drive the upper protrusion 413 at the bottom of the turntable 410 to press the other lower protrusion 409, thereby pressing the other fixed shaft 602, and adjusting another set of sponge pads 605 to be flush with the surface of the fixed plate 3, and the screw rod 411 drives the slide 401 to move to realize that the sponge pad 605 applies another set of release agent to the fixed plate 3 , worm wheel plate 502 and support plate 503, which is convenient for demoulding. The application range of the demoulding agent can be selected according to the bottom area of ​​the model, that is, the number of sponge pads 605 contaminated with the demoulding agent inside the demoulding agent box 703 is adjusted, and the sponge pads 605 on the side of the required fixed shaft 602 are rotated to the bottom of the fixed shaft 602. At this time, the bolt holes 607 on the surface of the rotated magnet 604 correspond to the bolts 606. The bolts 606 are rotated to fix the magnet 604. The unnecessary sponge pads 605 are adsorbed on the side of the fixed shaft 602 through the magnet 604, which will not affect the sponge pads 605 at the bottom of the fixed shaft 602 from applying the demoulding agent to the surface of the fixed plate 3, thus saving the demoulding agent. ;

[0038] Specifically, Figure 3 , Figure 6 , Figure 7 and Fig.12As shown, the dust cleaning mechanism 8 includes two pressure rods 802, and the slide 401 is symmetrically slidably connected to the two pressure rods 802 about the second motor 402. A third spring 803 is clamped between the two pressure rods 802 and the slide 401. The bottoms of the two pressure rods 802 are fixedly connected to a pressure plate 801, and the two pressure plates 801 are in contact with the bottoms of the two bottom plates 407. The ends of the two pressure plates 801 are vertically fixedly connected to a top column 805, and the bottoms of the two top columns 805 are fixedly connected to The buffer rod 806, the outer sides of the two buffer rods 806 are slidably connected with the bottom column 807, and the dust collecting cylinder 804 is rotatably connected between the two bottom columns 807; the dust cleaning mechanism 8 also includes a fourth spring 808, and the fourth spring 808 is clamped between the two bottom columns 807 and the top column 805; when the upper protrusion 413 presses any one of the lower protrusions 409, the bottom plate 407 presses the pressure plate 801, the pressure rod 802 descends at the top of the slide 401, and the third spring 803 is compressed, further realizing The two pressing plates 801 simultaneously press the ash sticking cylinder 804, at which time the ash sticking cylinder 804 is flush with the surface of the fixed plate 3, and when the slide 401 moves to drive the sponge pad 605 to apply the release agent, the ash sticking cylinder 804 can clean up the debris on the fixed plate 3 and the worm plate 502 in advance to avoid staining on the sponge pad 605 or sticking to the model to affect the density of the model, and the fourth spring 808 between the top column 805 and the bottom column 807 can buffer the ash sticking cylinder 804 on the one hand, and on the other hand, when the surface of the ash sticking cylinder 804 is When the thickness decreases, the fourth spring 808 can still press the bottom column 807, so that the outermost adhesive tape of the dust collecting cylinder 804 is flush with the fixed plate 3, which is conducive to cleaning. When the upper protrusion 413 is separated from the lower protrusion 409, the bottom plate 407 rises, and the pressure plate 801 will not be pressed by the bottom plate 407. Then the third spring 803 resets the pressure rod 802, and finally, the dust collecting cylinder 804 is also reset. The dust collecting cylinder 804 adopts the dust collecting principle of cleaning the fluff on the surface of clothes in life, and multiple layers of tape are adhered to the surface of the dust collecting cylinder 804.

[0039] Specifically, Figure 1 , Figure 4 , Fig.13 and Fig.14As shown, the rotating mechanism 5 includes a worm gear plate 502, which is rotatably connected to the fixed plate 3, and the surface of the worm gear plate 502 is flush with the surface of the fixed plate 3. A fourth motor 501 is installed on the side of the fixed plate 3, and the output end of the fourth motor 501 is connected to a worm 506 rotatably connected to the fixed plate 3 through a coupling; the rotating mechanism 5 also includes a support plate 503, and the support plate 503 is slidably connected to the surface opening of the worm gear plate 502, and a plurality of second springs 504 are clamped between the support plate 503 and the worm gear plate 502, and a level 505 is installed on the surface of the support plate 503, and the surface of the level 505 is flush with the surface of the support plate 503; when demoulding, it is also necessary to use a scraper to repeatedly move the bottom of the model between the fixed plate 3 and the worm gear plate 502. Shovel to demould, the operator can start the fourth motor 501 at a position to drive the worm 506 to rotate, and further the worm 506 drives the worm gear plate 502 to rotate, so that different positions of the model correspond to the operator, and the operator does not need to scrape the bottom of the model to demould in multiple directions, and there is a self-locking function between the worm gear plate 502 and the worm 506. The worm gear plate 502 does not need to be manually fixed during demoulding, and if the bottom surface of the model is larger than the surface of the worm gear plate 502, when the worm gear plate 502 rotates, the model can be misaligned with the fixed plate 3 and the worm gear plate 502, which is conducive to demoulding, and the support plate 503 can be knocked as appropriate during demoulding, and the second spring 504 can buffer the support plate 503. When the support plate 503 is knocked again, it can also be misaligned with the model, and a rectangular hole will be generated, which is convenient for the entry of the scraper and is conducive to demoulding. The level 505 on the support plate 503 can observe whether the worm gear plate 502 is horizontal to ensure the accuracy of printing.

[0040] Specifically, Figure 1 and Figure 2As shown, the moving mechanism 2 includes two struts 201, and a slide plate 204 is slidably connected to the two struts 201. The slide plate 204 is fixedly connected to the fixed plate 3, and the two groups of electric push rods 702 are installed on the slide plate 204. A bearing seat 205 is installed on one side of the fixed frame 1, and a first motor 202 is installed on the other side of the fixed frame 1. A belt 203 is installed between the first motor 202 and the bearing seat 205, and the belt 203 is fixed to the slide plate 204; the fixed frame 1 can be installed at the bottom of the 3D printer, and the model can be printed. At this time, the first motor 202 can be started to drive the belt 203 to rotate. After the belt 203 rotates, the slide plates 204 are fixed to each other, and the slide plates 204 are slidably connected to the two support rods 201. Then, as the first motor 202 rotates clockwise or counterclockwise, the belt 203 is driven to rotate, so that the slide plate 204 can move horizontally left and right on the two support rods 201. When demolding, the first motor 202 can drive the slide plate 204 to slide out of the bottom of the 3D printer, thereby increasing the demolding space and moving the slide plate 204 to the bottom of the 3D printer to facilitate printing.

[0041] When the present invention is used, first, the fixed frame 1 can be installed at the bottom of the 3D printer. When printing the model, the first motor 202 can be started to drive the belt 203 to rotate. When the belt 203 rotates, the slide plates 204 are fixed to each other, and the slide plates 204 are slidably connected to the two support rods 201. Then, as the first motor 202 rotates clockwise or counterclockwise, the belt 203 is driven to rotate, so that the slide plates 204 can be horizontally moved left and right on the two support rods 201. When demolding, the first motor 202 can drive the slide plates 204 to slide out of the bottom of the 3D printer, thereby increasing the demolding space and moving the slide plates 204 to the bottom of the 3D printer to facilitate its printing.

[0042] Then, different demoulding agents, such as silicone oil and vaseline, are added to the inside of the two demoulding agent boxes 703 respectively. Before the 3D printer prints the model, it can select a suitable demoulding agent according to the printing material, and select the smearing width according to the bottom area of ​​the model. The sponge pad 605 is rotated to the bottom side of the fixed shaft 602 through the magnet 604, and the magnet 604 is fixed by the bolt 606 and the bolt hole 607. After confirming the demoulding agent inside the selected demoulding agent box 703, the corresponding electric push rod 702 is started to lift the demoulding agent box 703 inside the slide groove 701, so that the demoulding agent contacts the sponge pad 605 on the fixed shaft 602. After the sponge pad 605 is bonded with the demoulding agent, it waits for alignment. After the fixed plate 3 is coated, the electric push rod 702 is retracted to reset the demoulding agent box 703, and the second motor 402 is further started to drive the turntable 410 to rotate ninety degrees clockwise or counterclockwise to ensure that the upper protrusion 413 can contact the lower protrusion 409 on the specified fixed column 408. When the upper protrusion 413 presses the lower protrusion 409, the bottom plate 407 is lowered, and the limit rod 405 on the side plate 404 also drops accordingly, and the first spring 406 is compressed. When the bottom plate 407 drops, it drives the two connecting plates 601 to drop, and further the fixed shaft 602 drives the sponge pad 605 with the demoulding agent to drop. At this time, the sponge pad 605 and the surface of the fixed plate 3 are in contact. The third motor 403 is further started to realize that the screw rod 411 drives the slide 401 to move. As the slide 401 moves, the sponge pad 605 at the bottom of the fixed shaft 602 applies a layer of release agent to the surfaces of the fixed plate 3, the support plate 503 and the worm gear plate 502, which is convenient for subsequent demoulding. Similarly, the second motor 402 is started to drive the upper protrusion 413 at the bottom of the turntable 410 to press the other lower protrusion 409, thereby pressing the other fixed shaft 602, and adjusting another set of sponge pads 605 to be flush with the surface of the fixed plate 3. The screw rod 411 drives the slide 401 to move, and the sponge pad 605 applies another set of release agent to the fixed plate 3. On the worm gear plate 502 and the support plate 503, it is convenient for demoulding. The application range of the demoulding agent can be selected according to the bottom area of ​​the model, that is, the number of sponge pads 605 contaminated with the demoulding agent inside the demoulding agent box 703 is adjusted, and the required sponge pads 605 on the side of the fixed shaft 602 are rotated to the bottom of the fixed shaft 602. At this time, the bolt holes 607 on the surface of the rotated magnet 604 correspond to the bolts 606. The bolts 606 are rotated to fix the magnet 604. The unnecessary sponge pads 605 are adsorbed on the side of the fixed shaft 602 through the magnet 604, which will not affect the sponge pads 605 at the bottom of the fixed shaft 602 from applying the demoulding agent to the surface of the fixed plate 3, thus saving the demoulding agent;

[0043] Next, when the upper protrusion 413 presses any one of the lower protrusions 409, the bottom plate 407 presses the pressure plate 801, the pressure rod 802 descends on the top of the slide 401, and the third spring 803 is compressed, further realizing that the two pressure plates 801 press the dust sticking cylinder 804 at the same time. At this time, the dust sticking cylinder 804 is flush with the surface of the fixed plate 3. When the slide 401 moves to drive the sponge pad 605 to apply the release agent, the dust sticking cylinder 804 can clean up the debris on the fixed plate 3 and the worm plate 502 in advance to avoid staining on the sponge pad 605 or sticking to the model to affect the density of the model, and the top column 805 and the bottom column 807 are not too far away. On the one hand, the fourth spring 808 can buffer the dust collecting cylinder 804. On the other hand, when the thickness of the surface of the dust collecting cylinder 804 decreases, the fourth spring 808 can still press the bottom column 807, so that the outermost adhesive tape of the dust collecting cylinder 804 is flush with the fixing plate 3, which is conducive to dust cleaning. When the upper protrusion 413 is separated from the lower protrusion 409, the bottom plate 407 rises, and the pressing plate 801 is not pressed by the bottom plate 407. Then the third spring 803 resets the pressing rod 802, and finally, the dust collecting cylinder 804 is also reset. The dust collecting cylinder 804 adopts the dust collecting principle of cleaning the fluff on the surface of clothes in life, and multiple layers of adhesive tape are bonded to the surface of the dust collecting cylinder 804.

[0044] Finally, when demolding, it is necessary to use a scraper to repeatedly scrape the bottom of the model between the fixed plate 3 and the worm gear plate 502 for demolding. The operator can start the fourth motor 501 at one position to drive the worm 506 to rotate, and the worm 506 further drives the worm gear plate 502 to rotate, so that different positions of the model correspond to the operator. The operator does not need to scrape and demold the bottom of the model in multiple directions, and there is a self-locking function between the worm gear plate 502 and the worm 506. The worm gear plate 502 does not need to be manually fixed when demolding, and the model base is If the surface is larger than the surface of the worm gear plate 502, when the worm gear plate 502 rotates, the model can be misaligned with the fixed plate 3 and the worm gear plate 502, which is beneficial to demolding. When demolding, the support plate 503 can be knocked as appropriate, and the second spring 504 can buffer the support plate 503. When the support plate 503 is knocked again, it can also be misaligned with the model, and a rectangular hole will be generated to facilitate the entry of the scraper, which is beneficial to demolding. The level 505 on the support plate 503 can observe whether the worm gear plate 502 is level to ensure the accuracy of printing.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A 3D printing workbench that is convenient for demoulding, characterized in that: The invention comprises a fixed frame (1), a moving mechanism (2) mounted on the fixed frame (1), a fixed plate (3) being fixedly connected to the moving mechanism (2), a control mechanism (4) being mounted on the fixed plate (3), a coating mechanism (6) being mounted on the control mechanism (4), an oiling mechanism (7) located at the bottom of the coating mechanism (6) being mounted on the moving mechanism (2), a dust cleaning mechanism (8) being provided on the control mechanism (4), and a rotating mechanism (5) being mounted on the fixed plate (3); The control mechanism (4) comprises a slide (401), the slide (401) is slidably connected to the fixed plate (3), a third motor (403) is installed on one side of the fixed plate (3), a screw rod (411) connected to the output end of the third motor (403) is rotatably connected to the fixed plate (3), the screw rod (411) and the slide (401) are threadedly connected, a second motor (402) is installed on the top of the slide (401), a rotating disk (410) is fixedly connected to the output end of the second motor (402), an upper protrusion (413) is fixedly connected to the bottom of the rotating disk (410), side plates (404) are relatively fixedly connected to the two sides of the slide (401), and the two side plates (404) are relatively fixedly connected to the two side plates (404) The two sets of limit rods (405) are slidably connected to the upper and lower protrusions (413), the first spring (406) is clamped between the limit rods (405) and the side plates (404), the bottoms of the two sets of limit rods (405) are fixedly connected to the bottom plates (407), the two bottom plates (407) are fixedly connected to the fixing columns (408) located at the bottom of the rotating disk (410), the two opposite fixing columns (408) are fixedly connected to the lower protrusions (409) of the hemispherical structure, the distance between the axis of the rotating disk (410) and the upper protrusions (413) is equal to the distance between the axis of the rotating disk (410) and the lower protrusions (409), and the upper protrusions (413) and the two lower protrusions (409) are distributed in an isosceles triangle; The smearing mechanism (6) comprises a connecting plate (601), both ends of the two bottom plates (407) are fixedly connected to the connecting plates (601), a fixed shaft (602) is fixedly connected between the two opposite connecting plates (601), and a plurality of sponge pads (605) are equidistantly provided on the fixed shaft (602).

2. A 3D printing workbench with convenient demoulding according to claim 1, characterized in that: The control mechanism (4) further comprises side rods (412), and the two bottom plates (407) are both fixedly connected to two side rods (412) which are slidably connected to the slide frame (401).

3. A 3D printing workbench with convenient demoulding according to claim 1, characterized in that: The smearing mechanism (6) further comprises a plurality of rotating grooves (603), wherein the fixed shaft (602) is provided with a plurality of rotating grooves (603) of annular structure at equal intervals, wherein arc-shaped magnets (604) are slidably connected inside the plurality of rotating grooves (603), wherein the magnets (604) are adsorbed on the fixed shaft (602), and the sponge pads (605) are bonded to the magnets (604), and two adjacent sponge pads (605) are in contact with each other.

4. A 3D printing workbench with convenient demoulding according to claim 3, characterized in that: The smearing mechanism (6) further comprises bolts (606) and bolt holes (607); a plurality of bolts (606) are vertically and equidistantly threadedly connected to the fixed shaft (602); and a plurality of bolt holes (607) are provided on the sides of the plurality of magnets (604).

5. The 3D printing workbench with convenient demoulding according to claim 1, characterized in that: The oiling mechanism (7) comprises two slide grooves (701), the fixed plate (3) is provided with two sets of slide grooves (701) facing each other, the two sets of slide grooves (701) are slidably connected with demoulding agent boxes (703), the moving mechanism (2) is provided with two sets of electric push rods (702), the two sets of electric push rods (702) are respectively in contact with the bottom of the two demoulding agent boxes (703), and the two demoulding agent boxes (703) are located at the bottom of the two fixed shafts (602).

6. A 3D printing workbench with convenient demoulding according to claim 1, characterized in that: The dust cleaning mechanism (8) comprises two pressure rods (802), the two pressure rods (802) are symmetrically slidably connected to the slide (401) about the second motor (402), a third spring (803) is clamped between the two pressure rods (802) and the slide (401), the bottoms of the two pressure rods (802) are fixedly connected to pressure plates (801), the two pressure plates (801) are in contact with the bottoms of two bottom plates (407), the ends of the two pressure plates (801) are vertically fixedly connected to top columns (805), the bottoms of the two top columns (805) are fixedly connected to buffer rods (806), the outer sides of the two buffer rods (806) are slidably connected to bottom columns (807), and a dust collecting cylinder (804) is rotatably connected between the two bottom columns (807).

7. A 3D printing workbench with convenient demoulding according to claim 6, characterized in that: The dust cleaning mechanism (8) further comprises a fourth spring (808), and the fourth spring (808) is clamped between the two bottom columns (807) and the top column (805).

8. The 3D printing workbench with convenient demoulding according to claim 1, characterized in that: The rotating mechanism (5) comprises a worm gear plate (502), the fixed plate (3) being rotatably connected to the worm gear plate (502), the surface of the worm gear plate (502) being flush with the surface of the fixed plate (3), a fourth motor (501) being mounted on a side surface of the fixed plate (3), and an output end of the fourth motor (501) being connected to a worm (506) rotatably connected to the fixed plate (3) via a coupling.

9. A 3D printing workbench with convenient demoulding according to claim 8, characterized in that: The rotating mechanism (5) further comprises a support plate (503), the support plate (503) being slidably connected to the surface opening of the worm gear plate (502), a plurality of second springs (504) being clamped between the support plate (503) and the worm gear plate (502), a level (505) being mounted on the surface of the support plate (503), and a surface of the level (505) being flush with a surface of the support plate (503).

10. The 3D printing workbench with convenient demoulding according to claim 5, characterized in that: The moving mechanism (2) comprises two support rods (201), a slide plate (204) is slidably connected to the two support rods (201), the slide plate (204) is fixedly connected to the fixed plate (3), two groups of electric push rods (702) are mounted on the slide plate (204), a bearing seat (205) is mounted on one side of the fixed frame (1), a first motor (202) is mounted on the other side of the fixed frame (1), a belt (203) is mounted between the first motor (202) and the bearing seat (205), and the belt (203) is fixed to the slide plate (204).

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