WO2021143378A1 - 校平装置及三维打印设备 - Google Patents

校平装置及三维打印设备 Download PDF

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Publication number
WO2021143378A1
WO2021143378A1 PCT/CN2020/132943 CN2020132943W WO2021143378A1 WO 2021143378 A1 WO2021143378 A1 WO 2021143378A1 CN 2020132943 W CN2020132943 W CN 2020132943W WO 2021143378 A1 WO2021143378 A1 WO 2021143378A1
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WO
WIPO (PCT)
Prior art keywords
cavity
scraper
leveling
leveling device
printing
Prior art date
Application number
PCT/CN2020/132943
Other languages
English (en)
French (fr)
Inventor
姚小霞
马达荣
Original Assignee
珠海赛纳三维科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202020090344.7U external-priority patent/CN212097532U/zh
Priority claimed from CN202020635148.3U external-priority patent/CN213104486U/zh
Application filed by 珠海赛纳三维科技有限公司 filed Critical 珠海赛纳三维科技有限公司
Publication of WO2021143378A1 publication Critical patent/WO2021143378A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/112—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor

Definitions

  • This application relates to the technical field of printing equipment, and in particular to a leveling device and three-dimensional printing equipment.
  • three-dimensional printing equipment including a printing platform, a printing head, and a leveling roller.
  • the printing head and the leveling roller are all set above the printing platform.
  • the printing head prints the printing material on the printing platform and leveling
  • the rollers level the printing material printed on the printing table to ensure the dimensional accuracy of the printing material, and then the printing material printed on the printing platform is solidified, then the printing platform moves in the height direction, and the above steps are repeated to form the next layer Material.
  • the printing material is easy to adhere to the leveling roller, and the printing material attached to the leveling roller will adhere to the newly formed printing material when printing the next layer of material, which easily causes color mixing between adjacent printing layers.
  • the purpose of the embodiments of this application is to provide a leveling device and a three-dimensional printing device to solve the problem that the printing material is easy to adhere to the leveling roller in the related art, and the printing material attached to the leveling roller will be affected when the next layer of material is printed. Attaching to the newly formed printing material can easily cause technical problems of color mixing between adjacent printing layers.
  • an embodiment of the present application discloses a leveling device for use in a three-dimensional printing device.
  • the three-dimensional printing device is used to form a printing layer and includes: a leveling roller and a scraping assembly, the scraping assembly includes A waste box and a scraper, the waste box is arranged on one side of the leveling roller, the waste box has a cavity, and the top end of the scraper extends from the cavity and is in contact with the leveling roller, To scrape off the printing material attached to the leveling roller.
  • the squeegee includes a first surface and a second surface that are opposed to each other in the thickness direction (W), and the cavity is used for accommodating at least part of the squeegee, so
  • the waste box is also provided with a collection tank;
  • the cavity is used for receiving waste material flowing to the cavity along the first surface
  • the collection tank is used for receiving waste material flowing to the collection tank along the second surface
  • the cavity is in communication with the collection tank.
  • the side wall of the cavity includes a mounting surface and a first inclined surface
  • the mounting surface forms at least part of the inner wall of the cavity, and the mounting surface is used to fit at least part of the second surface;
  • the first inclined surface is located above the mounting surface, and the first inclined surface is used to surround the second surface to form the collection tank.
  • a partition is provided in the cavity, and along the width direction (X) of the waste box, the partition separates the cavity into a first cavity and a second cavity.
  • the partition includes a mounting surface, the mounting surface is used to be attached to at least part of the first surface or the second surface, and the second surface faces the second cavity;
  • the second cavity is used for receiving waste materials flowing to the collection tank along the second surface.
  • the size of the second cavity is larger than the size of the scraper
  • the second cavity is provided with a diversion hole close to the side wall of the first cavity, and the diversion hole extends along the width direction (X) of the waste box to communicate the second cavity and the First cavity.
  • a second gap is provided between at least one end of the partition and the inner side wall of the first cavity, so The first cavity and the second cavity communicate with each other through the second gap.
  • the side wall of the cavity includes a mounting surface and a groove
  • the mounting surface is used to fit at least a part of the second surface and make the second The surface faces the groove, and the groove is recessed along the height direction (Z) of the waste box to receive the waste that flows to the collection tank along the second surface.
  • the mounting surface is an inclined surface.
  • the edge of the scraper extends beyond the edge of the leveling roller.
  • it further includes an abutment block, the abutment block is arranged in the cavity, and the scraper is sandwiched between the abutment block and the collection tank. Between the side walls.
  • the abutting block has a top abutting surface facing the scraper, and the top abutting surface is attached to the scraper.
  • the end of the abutment block facing the squeegee has a top abutment edge, and the top abutment edge is in contact with the squeegee.
  • one end of the abutment block facing away from the scraper is in contact with the other side wall of the collection tank.
  • the installation side wall is arranged obliquely, so that the area of the bottom of the collecting tank is smaller than the area of the top of the collecting tank.
  • the leveling device further includes a positioning device connected to the scraper and the collecting device, and the positioning device is used to restrict the scraper and the collecting device. The relative position between the collection devices.
  • the positioning device includes a positioning pin provided on the mounting side wall, a first positioning hole is provided on the scraper, and the positioning pin penetrates through the Inside the first positioning hole.
  • the abutment block and the collection device are connected by a fastener, and the connection force of the fastener is perpendicular to the bottom of the collection tank.
  • a drainage groove is provided on the top surface of the bottom of the abutment block away from the bottom of the collecting groove, and the drainage groove is along a direction parallel to the center line of the leveling roller. extend.
  • the groove bottom surface of the drainage groove is an inclined surface.
  • an ink collecting groove is provided at the end of the drainage groove, the width of the ink collecting groove is greater than the width of the drainage groove, and the depth of the ink collecting groove is greater than that of the drainage groove. The depth of the groove, the ink collecting groove is communicated with the drainage groove.
  • the leveling device further includes: a discharging device, the discharging device is in communication with the collecting tank, and the discharging device is used for discharging The printing material is discharged.
  • the discharge device includes a collection tube, a pump, and a collection container.
  • One end of the collection tube is in communication with the collection tank, and the other end of the collection tube is connected to the collection tank.
  • the container is in communication, and the pump is arranged on the collection pipe.
  • an embodiment of the present application discloses a three-dimensional printing device, including the above-mentioned leveling device.
  • the leveling device and three-dimensional printing equipment provided by the present application can scrape off the printing material attached to the leveling roller by a scraper, thereby avoiding the occurrence between adjacent printing layers caused by the printing material attached to the leveling roller. Color mixing.
  • FIG. 1 is a schematic structural diagram of a three-dimensional printing device provided by this application in a specific embodiment
  • FIG. 2 is a schematic diagram of the structure of the three-dimensional printing device provided by this application in another specific embodiment
  • Figure 3 is a cross-sectional view of the leveling device provided by this application in a specific embodiment
  • Figure 4 is an enlarged view of part A of Figure 4.
  • Fig. 5 is a cross-sectional view in another direction of Fig. 3;
  • Figure 6 is a cross-sectional view of the leveling device provided by this application in another specific embodiment
  • FIG. 7 is a cross-sectional view in another direction of FIG. 6 in a specific embodiment
  • Fig. 8 is a cross-sectional view of Fig. 6 in another specific embodiment in another direction;
  • Figure 9 is a cross-sectional view of the leveling device provided by this application in another specific embodiment.
  • FIG. 10 is a cross-sectional view of the maintenance device provided by the application in a specific embodiment
  • Figure 11 is an enlarged view of part B of Figure 9;
  • Figure 12 is a cross-sectional view of the maintenance device provided by the application in another specific embodiment
  • FIG. 13 is a cross-sectional view of the maintenance device provided by this application in another specific embodiment
  • Figure 14 is a structural schematic diagram 1 of the leveling device provided by this application in a specific embodiment
  • 16 is a schematic structural diagram of the leveling device provided by this application in another specific embodiment
  • Figure 17 is a schematic diagram of the connection between the positioning pin and the scraper in the leveling device provided by this application;
  • 18 is a schematic diagram of the pre-tightening force between the doctor blade and the leveling roller in the leveling device provided by this application;
  • Figure 19 is a partial enlarged view of C in Figure 18;
  • 20 is a schematic structural diagram of a drainage groove provided on the top block of the leveling device provided by this application;
  • Figure 21 is a top view of the drainage groove in the leveling device provided by this application.
  • Figure 22 is a cross-sectional view of the top block in the leveling device provided by this application.
  • Figure 23 is a schematic diagram of the connection between the discharge device and the collection tank in the leveling device provided by this application;
  • FIG. 24 is a schematic diagram of the structure of the three-dimensional printing device provided by this application.
  • a leveling device is usually provided to level the uncured printed layer so that the height at each position of the printed layer is consistent;
  • the leveling device generally includes a leveling roller, a doctor blade and a waste box.
  • the high-speed rotating leveling roller is in contact with the uncured printing layer, and the excess material on the printing layer can be taken away by adhering to the surface of the leveling roller.
  • the material adhering to the surface of the leveling roller is scraped off by the scraper when it comes into contact with the scraper, and flows into the waste ink cartridge along the surface of the scraper.
  • an embodiment of the present application provides a three-dimensional printing device.
  • the three-dimensional printing device includes a printing platform 2, a printing head 3, a curing lamp 4, and a leveling device 1.
  • the printing platform 2 can rotate around itself.
  • the axis rotates, the printing head 3, the leveling device 1 and the curing lamp 4 are installed on the printing platform 2 at intervals along the rotation direction of the printing platform 2.
  • the printing head 3 is used to print the printing material on the printing platform 2 to form a printing layer
  • the leveling device 1 can take away the excess printing material on the printing layer and improve the dimensional accuracy of the printing layer in the height direction Z.
  • the curing lamp 4 cures the printing layer after the leveling operation is performed to form a cured molding layer
  • the printing platform 2 can be lowered a certain distance or the printing head 3, curing lamp 4 and leveling device 1 can be raised a certain distance, so that the printing head 3 can continue to deposit printing materials on the previously formed printing layer to form Subsequent printing layer.
  • the three-dimensional printing equipment also includes a carriage 6, an X-axis movement mechanism 7 and a Y-axis movement mechanism 8.
  • the print head 3, the leveling device 1 and the curing lamp 4 are mounted on the carriage 6, and the carriage 6 It is installed on the X-axis moving mechanism 6, the X-axis moving mechanism 6 is installed on the Y-axis moving mechanism 7, and the printing platform 2 is installed on the Z-axis moving mechanism (not shown in the figure).
  • the carriage 6 can move along the width direction X and the length direction Y of the three-dimensional printing device along with the X-axis moving mechanism 7 and the Y-axis moving mechanism 8 to drive the print head 3 to move along the printing platform 2 for easy printing of three-dimensional products and leveling device 1 and curing lamp 4 are both set to two, the leveling device 1 is located on both sides of the moving direction of the print head 3, the curing lamp 4 is located on both sides of the moving direction of the leveling device 1, the print head 3 prints the printing layer, and then follow the words With the movement of the cart 6, the leveling device 1 can take away the excess printing material on the printing layer, and the curing lamp 4 cures the printing layer on which the leveling operation has been performed.
  • the printing platform moves along the height direction Z of the three-dimensional printing device with the Z-axis moving mechanism, so that the printing platform is lowered a certain distance so that the printing head can continue to deposit printing materials on the previously formed printing layer to form a subsequent printing layer.
  • the leveling device 1 includes a leveling roller 11 and a scraping assembly.
  • the leveling roller 11 can rotate and can contact the printing layer so as to attach excess printing materials on the printing layer and improve the printing layer.
  • the scraping assembly includes a scraper 12 and a waste box 13.
  • the scraper 12 is used to contact the surface of the leveling roller 11 to scrape off the attachments on the surface of the leveling roller 11, and the scraper 12 is located in the direction of rotation of the leveling roller 11
  • the waste box 13 is used to collect the attachment scraped by the scraper 12 from the surface of the leveling roller 11;
  • the scraper 12 includes a first surface 121 and a second surface 122 oppositely arranged along the thickness direction W, and the second surface One end of 122 is attached to the outer circumference of the leveling roller 11, and the attachments on the leveling roller 11 are scraped off during the rotation of the leveling roller 11;
  • the waste box 13 includes a cavity 131, and the scraper 12 is far away from the leveling roller 11 One end is located in the cavity 131 and fixed to the inner side wall of the cavity 131.
  • the cavity 131 is provided with a collection groove 131a.
  • the first surface 121 of the scraper 12 faces the cavity 131
  • the attachments on the leveling roller 11 can flow into the cavity 131 along the first surface 121
  • the second surface 122 of the scraper 12 faces the collection tank 131a.
  • the attachments on the flat roller 11 can flow into the collection groove 131a along the second surface 122, reducing the risk of the attachments overflowing from the first surface 121 of the squeegee 12 to the second surface 122 and then dripping onto the printing layer.
  • a collection groove 131a is provided on the side wall of the cavity 131, and the collection groove 131a is located between the second surface 122 and the leveling roller 11, and is used to collect the attachments flowing down the second surface 122.
  • the leveling roller 11 may be columnar or other shapes that can level the uncured printed layer.
  • the leveling roller 11 since the printing platform 2 rotates along the radial direction of the printing platform 2, the linear speeds at different positions are different.
  • the leveling roller 11 can be designed to be conical or truncated. , So that when the leveling roller 11 rotates, the linear speeds at different positions on its surface can match the linear speeds of the different radial positions on the printing platform 2. At this time, the axis of the leveling roller 11 is inclined to the printing platform 2 to make the leveling The bottom of the roller 11 is parallel to the surface of the printing platform 2.
  • the bottom end of the waste box 13 is not lower than the bottom end of the leveling roller 11, which reduces the risk of the printing layer coming into contact with the first waste box 13 during the rotation of the printing platform 2.
  • one end of the scraper 12 is pressed against the body of the leveling roller 11 to scrape off the body
  • the other end of the attachment is fixed in the cavity 131 so that the attachment can flow into the cavity 131 along the scraper 12.
  • the edge of the scraper 12 extends beyond the edge of the leveling roller 11, that is, the length of the scraper 12 is longer than
  • the length of the leveling roller 11 is so that the squeegee 12 can scrape clean the attachments on the surface of the leveling roller 11; and the length of the cavity 131 is longer than the length of the squeegee 12, so as to accept the flow along the squeegee 12 to the cavity 131 Waste.
  • the cavity 131 communicates with the collection tank 131a. That is, the waste in the collection tank 131a can flow into the cavity 131, and the waste in the cavity 131 can also flow into the collection tank 131a.
  • the volume in the collection tank 131a is small to reduce the amount of waste in the collection tank 131a. There is a risk of accumulation inside the collection tank 131a.
  • the side wall of the cavity 131 close to the leveling roller 11 includes a mounting surface 131b and a first inclined surface 131c; 131b forms at least part of the inner wall of the cavity 131, and at least part of the second surface 122 is attached to the mounting surface 131b; along the height direction Z of the leveling device 1, the first inclined surface 131c is located above the mounting surface 131b, and the second surface 122 A collecting groove 131a is formed around the first inclined surface 131c to contain the printing material flowing down the second surface 122 and reduce the risk of the printing material flowing down the second surface 122 from dripping from the side wall of the cavity 131.
  • a first gap 131d is provided between at least one end of the scraper 12 and the inner wall of the cavity 131, and the collection groove 131a and the cavity 131 It communicates through the first gap 131d.
  • the length of the cavity 131 is longer than the length of the squeegee 12, so that there is a first gap 131d between at least one end of the squeegee 12 and the inner side wall of the cavity 131 ,
  • the length of the first inclined surface 131c is greater than the length of the squeegee 12, so that the printing material on the squeegee 12 can completely flow into the cavity 131 or the collection groove 131a; and the collection groove 131a and the cavity can be connected through the first gap 131d.
  • 131 is connected, so that the waste in the collection tank 131a can flow into the cavity 131, saving the time of frequently disassembling the leveling device 1 to clean the waste in the collection tank 131a.
  • the bottom of the collection tank 131a can be set to be inclined along the length direction Y of the leveling device 1. That is, the printing material in the collection tank 131a will flow into the cavity 131 faster due to the inclination of the bottom of the collection tank 131a; or, the bottom of the collection tank 131a can also be set so that the middle part is higher than the two end parts, that is, the collection tank The printing material in 131a flows into the cavity 131 from both ends of the collecting groove 131a.
  • the leveling device 1 may also include a suction component; for example, the suction component may include a suction tube, a suction pump, and a waste bottle, and one end of the suction tube is arranged at The other end of the cavity 131 is set in a waste bottle, and the suction pump sucks the printing material in the cavity 131 into the waste bottle through a suction tube, without disassembling the leveling device 1 to clean the waste box 13.
  • the suction component may include a suction tube, a suction pump, and a waste bottle, and one end of the suction tube is arranged at The other end of the cavity 131 is set in a waste bottle, and the suction pump sucks the printing material in the cavity 131 into the waste bottle through a suction tube, without disassembling the leveling device 1 to clean the waste box 13.
  • a liquid level sensor can also be provided in the cavity 131.
  • the liquid level sensor is used to detect the liquid level of the printing material in the cavity 131.
  • the liquid level in the cavity 131 reaches the first preset
  • the operation of the suction assembly is started, and when the liquid level in the cavity 131 drops to a second preset height, the operation of the suction assembly is stopped, wherein the first preset height is greater than the second preset height.
  • the bottom of the cavity 131 can also be set to be inclined, and the suction tube is placed at a lower position in the cavity 131 to facilitate the suction assembly to the cavity.
  • the suction of the printing material in the body 131 can also be set to be inclined, and the suction tube is placed at a lower position in the cavity 131 to facilitate the suction assembly to the cavity.
  • a partition 131i is provided in the cavity 131.
  • the partition 131i separates the cavity 131 into a first cavity 131g and a second cavity 131g.
  • the body 131h is used to receive the waste material flowing from the second surface 122 to the collection tank 131a.
  • the squeegee 12 can be fixedly installed in the first cavity 131g, that is, the mounting surface 131b of the partition 131i faces the first cavity 131g, and the second surface 122 of the squeegee 12 is attached to the mounting surface 131b;
  • the squeegee 12 may also be fixedly installed in the second cavity 131h, that is, the mounting surface 131b of the partition 131i faces the second cavity 131h, and the first surface 121 of the squeegee 12 is attached to the mounting surface 131b.
  • the first surface 121 of the squeegee 12 faces the first cavity 131g
  • the second surface 122 of the squeegee 12 faces the second cavity 131h.
  • the attachments on the leveling roller 11 can flow along the first surface 121 to the first cavity. In the cavity 131g, the attachments on the leveling roller 11 can flow into the second cavity 131h along the second surface 122.
  • the size of the cavity 131 is larger than the size of the scraper 12. Therefore, the size of the second cavity 131h is larger than the size of the scraper 12, so that the waste on the scraper 12 can completely flow into the cavity 131; the second cavity 131h is provided with a flow guide near the side wall of the first cavity 131g.
  • the hole 131a1 and the guide hole 131a1 extend along the width direction X of the leveling device 1 to connect the second cavity 131h and the first cavity 131g, so that the first cavity 131g and the second cavity 131h are connected, that is, the second cavity
  • the printing material in 131h can flow into the first cavity 131g through the diversion hole 131a1.
  • the diversion hole 131a1 may be provided in a position where the first cavity 131g is not attached to the scraper 12, or the diversion hole 131a1 may also be provided in the first cavity 131g and the scraper 12
  • a through hole communicating with the guide hole 131a1 may be provided on the scraper 12.
  • a second gap 131f is provided between at least one end of the partition 131i and the inner side wall of the first cavity 131g , The first cavity 131g and the second cavity 131h communicate with each other through the second gap 131f.
  • the length of the first cavity 131g and the second cavity 131h is greater than the length of the partition 131i, so that at least one end of the partition 131i and the inner side wall of the first cavity 131g have a second gap 131f, so that the attachment on the scraper 12
  • the attached objects can completely flow into the first cavity 131g or the second cavity 131h, and the waste in the second cavity 131h can flow into the first cavity 131g through the second gap 131f, reducing the accumulation and overflow of attached objects The risk of the second cavity 131h.
  • the volume of the second cavity 131h is smaller than the volume of the first cavity 131g, so that the installation position of the scraper 12 is close to the leveling roller 11 to ensure that the slope of the scraper 12 can make the waste flow smoothly.
  • the side wall of the cavity 131 has a certain thickness
  • the side wall of the cavity 131 includes a mounting surface 131b and a groove.
  • the mounting surface 131b is used to interact with at least the second surface 122. Partially fits and makes the second surface 122 face the groove, and the groove is recessed along the height direction Z of the waste box 13 to receive the waste that flows to the groove along the second surface 122.
  • the groove is a collecting groove 131a, so that the waste material overflowing to the second surface 122 can flow into the groove.
  • the mounting surface 131b is an inclined surface.
  • the mounting surface 131b may be an inclined surface, so that the squeegee 12 is inclined; the mounting surface 131b may also be a vertical inclined surface, so that the squeegee 12 is vertical.
  • the inclined scraper 12 in this embodiment is more convenient to be attached to the leveling roller 11, and the attachments on the leveling roller 11 can flow along the scraper 51; After the scraper 12 scrapes off the attachment on the leveling roller 11, the attachment falls down by its own gravity, and may splash out of the cavity 131 and fall onto the printing layer.
  • the included angle between the mounting surface 131b and the horizontal plane is greater than the included angle between the first inclined surface 131c and the horizontal plane, so that the second surface 122 and the first inclined surface 131c can form a first collecting groove 131a, wherein the mounting surface
  • the angle between 131b and the horizontal plane can be set to 50° ⁇ 70°.
  • the embodiment of the present application also provides a maintenance device 5, which is used in a three-dimensional printing device to scrape the ejection surface of the print head 3 to attach it to the ejection surface of the print head 3. Scrape off the attachments.
  • the maintenance device 5 includes a scraping assembly.
  • the scraping assembly includes a scraper 12 and a waste box 13. One end of the scraper 12 can be in contact with the ejection surface of the print head 3 to scrape off the attachments on the ejection surface of the print head 3. 13 is used to collect waste scraped by the squeegee 12 from the ejection surface of the print head 3.
  • the waste box 13 may be the waste box 13 of the leveling device in any of the above embodiments; the scraper 12 is located in the waste box 13 and is fixed to the inner side wall of the waste box 13, and the scraper 12 includes opposite sides along its thickness direction.
  • the first surface 121 and the second surface 122 are set. During the reciprocating movement of the printer along the radial direction of the printing platform 2, the first surface 121 faces the print head 3 that ejects the printing material, and follows the movement of the print head 3. One side 121 scrapes the ejection surface of the print head 3.
  • the waste box 13 is provided with a collection slot 131a, the first surface 121 faces the inner cavity of the waste box 13, the attachments on the ejection surface of the print head 3 can flow into the waste box 13 along the first surface 121, and the second surface 122 faces the collection slot 131a Attachments on the ejection surface of the print head 3 can flow to the collection tank 131a along the second surface 122, so as to reduce the risk of waste overflowing from the first surface 121 of the squeegee 12 to the second surface 122.
  • the specific installation method of the squeegee 12 is not limited, as long as it can be fixed in the waste box 13 and can scrape the ejection surface of the print head 3, it can be installed vertically or Tilt installation.
  • the second surface 122 includes a second inclined surface 122a.
  • the second inclined surface 122a intersects the first surface 121. The intersection of 122a and the first surface 121 is used to scrape off the adhering matter attached to the ejection surface of the print head 3.
  • the collection tank 131a can be provided in various structures.
  • the side wall where the waste box 13 is attached to the second surface 122 is provided with a mounting surface 131b and a first inclined surface 131c, and the mounting surface 131b is used for It is attached to at least part of the second surface 122, and the first inclined surface 131c and the second surface 122 surround the collecting groove 131a.
  • the collection trough 131a and the inner cavity of the waste box 13 are separated by a scraper 12; or, a groove is opened between the inner and outer side walls of the waste box 13, and the groove is a collection trough 131a; or, in the waste box
  • a partition 131i is provided in the partition 13 which separates the waste box 13 into a first cavity 131g and a second cavity 131h.
  • the scraper 12 can be located in the first cavity 131 or the second cavity 131, and the second cavity 131
  • the surface 122 is attached and fixed to the partition 131i, and the second cavity 131 is a collecting groove 131a.
  • the inner cavity of the waste box 13 communicates with the collection tank 131a, that is, the printing material in the collection tank 131a can flow into the waste box 13, and the printing material in the waste box 13 can also flow into the collection tank 131a, reducing the collection tank There is a risk of excessive printing materials accumulated in 131a or waste box 13 overflowing.
  • the forming method and specific structure of the collecting groove 131a in this embodiment are the same as the forming method and specific structure of the collecting groove 131a in the leveling device 1 in any of the above embodiments, and will not be repeated here.
  • a general three-dimensional printing equipment (3D printer) includes a print head and a leveling device.
  • the leveling device includes a leveling roller located on the side of the print head, a collection tank provided on the side of the leveling roller, and a scraper blade.
  • the scraper blade is set in the collection tank
  • the wiper blade is connected to the inner wall of the collection tank by fastening bolts, etc.
  • the top end of the blade extends from the collection tank and contacts the leveling roller; during use, the print head moves and ejects the printing material to Form the printing layer; the leveling roller and the collection tank move, the leveling roller can take away the excess material on the printing layer to ensure the accuracy of the thickness of the printing layer; while the leveling roller rotates, the scraper will scrape the material on the leveling roller Remove and collect in the collection tank.
  • the scraper blade is connected to the inner wall of the collection tank by means of tightening bolts, etc., and the scraper blade is locally stressed, so that the pressure of the scraping line in the scraper blade contacting the leveling roller is not uniform, which is easy to produce on the surface of the leveling roller.
  • the gap and the scraping line cannot be completely in contact with the leveling roller, and it is difficult for the scraper to scrape the printing material on the leveling roller; when leveling again, the residual printing material on the leveling roller will adhere to the new printing layer, affecting the printed product the quality of.
  • the printing materials remaining on the leveling roller will adhere to the new printing layer, which will cause the printing layer to mix colors; when the printing materials used in the adjacent printing layers have inconsistent properties, After the residual printing material on the leveling roller adheres to the new printing layer, it will affect the performance of the printed product.
  • FIG. 14 is a structural schematic diagram 1 of the leveling device provided by this embodiment
  • Fig. 15 is a structural schematic diagram 2 of the leveling device provided by this embodiment
  • Fig. 16 is a schematic structural diagram 3 of the leveling device provided by this embodiment
  • Fig. 17 A schematic diagram of the connection between the positioning pin and the blade in the leveling device provided in this embodiment
  • Figure 18 is a schematic diagram of the pre-tightening force between the blade and the leveling roller in the leveling device provided in this embodiment
  • Figure 19 is a diagram 18 is a partial enlarged view at C
  • FIG. 20 is a schematic structural diagram of a drainage groove provided on the top block of the leveling device provided by this embodiment
  • FIG. 20 is a schematic structural diagram of a drainage groove provided on the top block of the leveling device provided by this embodiment
  • FIG. 20 is a schematic structural diagram of a drainage groove provided on the top block of the leveling device provided by this embodiment
  • FIG. 20 is a schematic structural diagram of a drainage groove provided on the top
  • FIG. 21 is a top view of the drainage groove in the leveling device provided by this embodiment; 22 is a cross-sectional view of the top block in the leveling device provided in this embodiment; FIG. 23 is a schematic diagram of the connection between the discharge device and the collection tank in the leveling device provided in this embodiment; FIG. 24 is the three-dimensional printing device provided in this embodiment Schematic diagram of the structure.
  • This embodiment provides a leveling device, which includes: a leveling roller 1, a waste box 13, a scraper 12, and a top block 30.
  • the waste box 13 is arranged on one side of the leveling roller 1, and the waste box 13 has a cavity. 131.
  • the abutment block 30 is arranged in the cavity 131, and the scraper 12 is sandwiched between the abutment block 30 and the installation side wall 202 of the cavity 131.
  • the top end of the scraper 12 extends from the cavity 131 and is connected to the cavity 131.
  • Leveling roller 1 touches.
  • the leveling device can be applied to a three-dimensional printing device; a print head 3 is provided on the three-dimensional printing device.
  • the print head 3 moves, and while the print head 3 moves, the print head 3 ejects printing materials outward, To form a printing layer 80; the leveling device leveled the formed printing layer 80 to ensure the dimensional accuracy of the printing layer 80; repeating the above process, multiple printing layers 80 can be formed in sequence, and multiple printing layers 80 are stacked to form a three-dimensional product.
  • the leveling roller 1 is rotatably connected to the three-dimensional printing device, and the axis of the leveling roller 1 is parallel to the printing layer 80, so that when the leveling roller 1 rotates, the excess material on the printing layer 80 is attached to On the leveling roller 1, to ensure the dimensional accuracy of the printing layer 80.
  • the waste box 13 can be set on the side of the leveling roller 1 away from the print head 3 to collect the printing materials attached to the leveling roller 1.
  • the waste box 13 can be in a regular shape such as a rectangular parallelepiped or a triangular prism. Of course, the waste box 13 It can also take other shapes. This embodiment does not limit the shape of the collection device 20, as long as it is ensured that a cavity 131 is provided on the waste box 13, and the cavity 131 can collect printing materials; the top block 30 is provided in the cavity 131, and the scraper 12 is sandwiched between the abutment block 30 and the installation side wall 202 of the cavity 131 to realize the fixation of the scraper 12.
  • the abutment block 30 may be mainly composed of metal materials such as copper, iron, aluminum, etc.
  • the abutment block 30 may also be mainly composed of non-metallic materials such as plastic or rubber.
  • the scraper 12 may be mainly composed of metal materials such as copper, iron, aluminum, etc.
  • the scraper 12 may also be mainly composed of non-metallic materials such as plastic or rubber.
  • the bottom end of the scraper 12 is sandwiched between the top block 30 and the mounting side wall 202 of the cavity 131, and the top end of the scraper 12 extends from the cavity 131 and is in contact with the leveling roller 1; Further, the top end of the scraper 12 has a scraping line in contact with the leveling roller 1. When the leveling roller 1 rotates, the scraping line can scrape off the printing material attached to the leveling roller 1.
  • the waste box 13 is provided on one side of the leveling roller 1
  • a cavity 131 is provided on the waste box 13
  • the abutment block 30 is provided in the cavity 131
  • the scraper 12 is sandwiched between the abutment
  • the top end of the scraper 12 extends from the cavity 131 and contacts the leveling roller 1; the scraper 12 is sandwiched between the top block 30 and the installation side wall 202 In between, the force of the squeegee 12 is uniform, which improves the straightness of the scraping line on the squeegee 12, so that the scraping line is completely attached to the leveling roller 1, and the squeegee 12 can remove the printing material attached to the leveling roller 1 Completely scraped off, improving the quality of printed products.
  • the squeegee 12 can completely scrape off the printing material on the leveling roller 1.
  • no printing material will remain on the leveling roller 1, thereby preventing the remaining printing material from adhering to the new printing layer and affecting The quality of the printed product; when the colors of the printing materials used in adjacent printing layers are inconsistent, it can also prevent the residual printing materials on the leveling roller 1 from adhering to the new printing layer, resulting in color mixing of the printing layers; the same, when adjacent When the performance of the printing materials used in the printing layer of the printing layer is inconsistent, the printing materials remaining on the leveling roller 1 can also be prevented from adhering to the new printing layer, which affects the performance of the printed product.
  • the mounting side wall 202 is inclined to make the area of the groove bottom surface 304 of the cavity 131 smaller than the area of the groove top of the cavity 131.
  • the squeegee 12 can be inclined with respect to the bottom of the cavity 131, and the printing material scraped from the leveling roller 1 can enter the cavity 131 through the squeegee 12, thereby facilitating the collection of printing materials.
  • the included angle between the mounting side wall 202 and the vertical surface may be 20°-30° (such as 25°).
  • the included angle may also be other included angles, which is not limited in this embodiment.
  • the cross section of the cavity 131 may be a trapezoid, wherein the mounting side wall 202 is a side wall corresponding to one waist of the trapezoid, and the side wall corresponding to the other waist of the trapezoid is a contact side wall 203 and abutting block 20
  • the abutment block 30 is located between the contact side wall 203 and the installation side wall 202, and the scraper 12 is sandwiched between the installation side wall 202 and the abutment block 30 to fix the scraper 12.
  • the end of the abutting block 20 away from the scraper 12 is in contact with the contact side wall 203, and the contact side wall 203 can abut the scraper 12 against the abutting block 20, so that the abutting block 20 further clamps the scraper 12.
  • the abutment block 30 can be installed in the cavity 131, which can reduce the dimensional accuracy requirements of the abutment block 30 and facilitate the processing and manufacturing of the leveling device.
  • the preset gap between the abutting block 30 and the bottom of the cavity 131 can be different to ensure that the abutting block 30 and the mounting side wall 202 can clamp the scraper 12 , In order to realize the fixation of the scraper 12.
  • the abutment block 30 has a top abutment surface facing the squeegee 12, and the top abutment surface is attached to the squeegee 12.
  • the abutment block 30 is in surface contact with the squeegee 12, and the contact area between the abutment block 30 and the squeegee 12 is larger, which improves the fixing effect of the squeegee 12; in addition, the squeegee 12 is also improved.
  • the uniformity of the force further makes the scraping line on the squeegee 12 completely adhere to the leveling roller 1 to completely scrape off the printing material attached to the leveling roller 1.
  • the cross section of the cavity 131 may be rectangular. After the scraper 12 is attached to the mounting side wall 202, the scraper 12 is perpendicular to the bottom of the cavity 131. Correspondingly, the cross section of the top block 30 may be rectangular. After the abutment block 30 is put into the cavity 131, the abutment surface of the abutment block 30 facing the squeegee 12 is attached to the squeegee 12.
  • the scraper 12 is arranged obliquely after the scraper 12 is attached to the inner wall of the cavity 131.
  • the cross section of the abutting block 30 can be trapezoidal, and the abutting block 30 is placed in After the cavity 131, the abutting surface of the abutting block 30 facing the squeegee 12 is attached to the squeegee 12.
  • the top block 30 is in surface contact with the squeegee 12 to realize the fixation of the squeegee 12.
  • the force of the squeegee 12 is uniform, so that the scraping line on the squeegee 12 is completely attached to the leveling roller 1.
  • the scraper 12 can completely scrape off the printing material attached to the leveling roller 1
  • the end of the abutting block 30 facing the squeegee 12 has a top abutting edge, and the top abutting edge is in contact with the squeegee 12.
  • the abutment block 30 is in line contact with the scraper 12 to realize the fixation of the scraper 12.
  • the scraper 12 is uniformly stressed, so that the scraping line on the scraper 12 is completely attached to the leveling roller 1.
  • the squeegee 12 can completely scrape off the printing material attached to the leveling roller 1.
  • the cross section of the cavity 131 may be trapezoidal.
  • the cross section of the top block 30 may be trapezoidal.
  • the scraper 12 is attached to the mounting side wall 202 and inclined, and the top side may be The edge at the junction of the upper bottom and the waist of the abutting block 30; the top abutting edge may also be the edge at the junction of the upper and lower bottoms and the waist of the abutting block 30. As shown in FIG.
  • the cross section of the abutment block 30 can also be rectangular, and the corresponding abutment edge may be the side of the abutment block 30 facing the scraper 12 and the abutment block 30.
  • the top abutting edge can also be arranged in the middle of the side of the abutting block 30 facing the squeegee 12.
  • the cross-section of the abutting block 30 is rectangular, it can be positioned on the side of the abutting block 30 facing the squeegee 12 The middle part of the side protrudes to form a top edge.
  • the cross section of the abutment block 30 is not limited to a trapezoid and a rectangle, and the cross-section of the abutment block 30 may also be a regular shape such as a triangle. Of course, the cross-section of the abutment block 30 may also be other irregular shapes.
  • the leveling device further includes a positioning device connected to the scraper 12 and the waste box 13, and the positioning device is used to limit the relative position between the scraper 12 and the waste box 13.
  • the scraper 12 can be positioned, thereby avoiding the movement of the scraper 12 during the installation of the top block 30, thereby improving the installation accuracy of the scraper 12; in addition, the positioning device can prevent scraping during use.
  • the plate 12 moves to avoid poor contact between the scraper 12 and the leveling roller 1 caused by the movement of the scraper 12.
  • the positioning device includes a positioning pin 50 provided on the installation side wall 202, a first positioning hole 401 is provided on the scraper 12, and the positioning pin 50 is inserted in the first positioning hole 401.
  • the positioning pin 50 realizes the positioning between the scraper 12 and the cavity 131, and the connection with the scraper 12 is firm, and the positioning effect is better.
  • positioning pins 50 provided on the mounting side wall 202.
  • a plurality of first positioning holes 401 are provided on the scraper 12, and each positioning pin 50 is penetrated with a first positioning hole 401; The positioning pins 50 can improve the positioning effect of the scraper 12.
  • the end of the positioning pin 50 facing the abutting block 30 can be flush with the side of the scraper 12 facing the abutting block 30, or the positioning pin 50 can be facing the abutting block 30.
  • One end of is located inside the first positioning hole 401 to prevent the positioning pin 50 from preventing the push block 30 from contacting the scraper 12.
  • the positioning pin 50 can be provided on the side of the scraper 12 facing away from the top block 30, and a second positioning hole is provided on the mounting side wall 202, so that there is no need to provide the first positioning hole 401 on the scraper 12.
  • the scraper 12 is attached to the installation side wall 202, so that the positioning pin 50 is inserted into the second positioning hole; of course, the first positioning hole 401 can also be provided on the scraper 12 and on the installation side
  • the wall 202 is provided with a second positioning hole.
  • the squeegee 12 can be attached to the installation side wall 202, and then the positioning pin 50 is inserted into the first positioning hole 401 and the second positioning hole.
  • the scraper 12 is first brought into contact with the leveling roller 1, and then the scraper 12 is moved toward the leveling roller 1 by a preset distance, so that the distance between the scraper 12 and the leveling roller 1 It has a pre-tightening force, and at the same time plays a role in compensating the error caused by mechanical vibration during use;
  • the preset distance can be 0.4mm-0.7mm, of course, the preset distance can also be other distances, this embodiment There is no restriction on this.
  • the scraper 12 may be an elastic sheet, so that when there is a pre-tension force between the scraper 12 and the leveling roller 1, the scraper 12 is elastically deformed and the scraper 12 is bent to further make the scraper 12 The scraping line on the top is completely attached to the leveling roller 1 so that the squeegee 12 completely scrapes off the printing material attached to the leveling roller 1.
  • the top block 30 and the waste box 13 are connected by a fastener, and the connecting force of the fastener is perpendicular to the bottom of the collection tank 301.
  • the top block 30 and the waste box 13 are connected by fasteners, so that the top block 30 and the mounting side wall 202 can clamp the scraper 12, thereby improving the effect of fixing the scraper 12; in addition, the top block 30 passes through
  • the fasteners are connected to the waste box 13, which can also prevent the abutment block 30 from shaking in the cavity 131 during use, thereby avoiding the movement of the scraper 12 caused by the shaking of the abutting block 30, and ensuring the scraping on the scraper 12
  • the wire can always be in full contact with the leveling roller 1 to completely scrape off the printing material attached to the leveling roller 1.
  • the fastener may be a bolt or a screw, and a first fixing hole 301 may be provided on the abutment block 30.
  • the center line of the first fixing hole 301 is perpendicular to the bottom of the cavity 131, and correspondingly in the cavity 131
  • a threaded hole is provided on the bottom of the groove, and the bolt or screw passes through the first fixing hole 301 and then fits with the threaded hole; of course, when the first fixing hole 301 is provided on the abutment block 30, it can also be in the groove bottom of the cavity 131
  • a second fixing hole 301 is provided on the upper part, and a bolt or a screw passes through the first fixing hole 301 and the second fixing hole and then cooperates with a nut to realize the connection between the abutting block 30 and the cavity 131.
  • a drainage groove 302 is provided on the top surface of the abutment block 30 away from the bottom of the cavity 131, and the drainage groove 302 is along a direction parallel to the center line of the leveling roller 1 extend.
  • the cross section of the drainage groove 302 may be a regular shape such as a rectangle, a trapezoid, etc.
  • the drainage groove 302 may also have other irregular shapes, which is not limited in this embodiment.
  • the groove bottom surface 304 of the drainage groove 302 is an inclined surface. It is so arranged that the printing material falling into the drainage groove 302 flows and converges along the bottom surface 304 of the groove under the action of gravity, so that the printing material in the drainage groove 302 can be processed easily.
  • the end of the drainage groove 302 is provided with an ink collection groove 303
  • the width of the ink collection groove 303 is greater than the width of the drainage groove 302
  • the depth of the ink collection groove 303 is greater than the depth of the drainage groove 302
  • the ink collecting groove 303 is in communication with the drainage groove 302.
  • the width of the ink collection groove 303 and the width of the drainage groove 302 are the widths perpendicular to the extension direction of the drainage groove 302 (the vertical direction in FIG. 21); the depth of the ink collection groove 303 and the depth of the drainage groove 302 are perpendicular The depth in the direction of the bottom of the cavity 131 (the direction perpendicular to the paper in FIG. 21).
  • the first fixing hole 301 can be provided on the bottom surface 301 of the drainage groove 302 to prevent the bolts or screws from interacting with other objects.
  • it can also prevent the bolts or screws from occupying the space of the top block 30.
  • the groove bottom surface 304 of the drainage groove 302 when the groove bottom surface 304 of the drainage groove 302 is inclined, the groove bottom surface 304 can be inclined toward the ink collecting groove 303 so that the printing material falling into the drainage groove 302 flows into the ink collecting groove 303.
  • the end of the groove bottom surface 304 facing the ink collecting groove 303 is closer to the ground than the end facing away from the ink collecting groove 303, so that the printing material entering the drainage groove 302 can automatically flow into the ink collecting groove 303 under the action of gravity.
  • the leveling device further includes: a discharging device 60, the discharging device 60 is in communication with the ink collecting tank 303, and the discharging device 60 is used to dispatch the printing materials collected in the cavity 131.
  • the discharging device 60 can draw out the printing material collected in the cavity 131 to facilitate cleaning of the printing material in the cavity 131 without manually removing the printing material in the cavity 131, which is convenient for operation.
  • the discharging device 60 may include a collection tube, a pump 603, and a collection container 604. One end of the collection tube is in communication with the cavity 131, the other end of the collection tube is in communication with the collection container 604, and the pump 603 is arranged on the collection tube.
  • the pump 603 can transport the printing material in the cavity 131 to the collection container 604 through the collection tube, so as to facilitate the removal of the printing material in the cavity 131.
  • a drainage groove 302 is provided on the top surface of the abutment block 30, and an ink collecting groove 303 is provided at the end of the drainage groove 302.
  • One end of the collecting tube may be connected to the ink collecting groove 303 to discharge the collected ink. Printing material in slot 303.
  • the collection tube includes a first collection tube 601 and a second collection tube 602.
  • One end of the first collection tube 601 is connected to the ink collection tank 303, the other end of the first collection tube 601 is connected to the inlet of the pump 603, and the second collection tube 602 is connected to the inlet of the pump 603.
  • One end is in communication with the outlet of the pump 603, and the other end of the second collection tube 602 is in communication with the collection container 604.
  • the discharging device 60 may also include a fan, a collection bottle, and a pipe.
  • the top of the collection bottle is provided with a first opening and a second opening.
  • the fan communicates with the first opening, and one end of the pipe communicates with the second opening.
  • the other end of the is connected to the ink collecting tank 303; when in use, the fan works to extract the air in the collecting bottle, and the air pressure in the collecting bottle is reduced to draw the printing material in the ink collecting tank 303 into the collecting bottle through the pipe. .
  • the discharge device 60 may also only include a collection bottle and a pipe.
  • a flow hole is provided on the bottom of the ink collecting tank.
  • One end of the pipe is connected to the flow hole, and the other end of the pipe is connected to the collecting bottle.
  • the printing material flows into the ink collecting tank 303. Then, it flows into the collection bottle through the catheter under the action of gravity.
  • a three-dimensional printing device which includes a print head 3 and the above-mentioned leveling device, and the leveling device is arranged on one side of the print head 3.
  • the leveling device in this embodiment is substantially the same as the above-mentioned leveling device, and will not be repeated here.
  • the waste box 13 is arranged on one side of the leveling roller 1, the waste box 13 is provided with a cavity 131, the top block 30 is arranged in the cavity 131, and the scraper 12 is sandwiched between the Between the top block 30 and the installation side wall 202 of the cavity 131, the top end of the scraper 12 extends from the cavity 131 and contacts the leveling roller 1; the scraper 12 is sandwiched between the top block 30 and the installation side wall 202 In between, the force of the squeegee 12 is uniform, which improves the straightness of the scraping line on the squeegee 12, so that the scraping line is completely attached to the leveling roller 1, and the squeegee 12 can remove the printing material attached to the leveling roller 1 Completely scraped off, improving the quality of printed products.
  • the squeegee 12 can completely scrape off the printing material on the leveling roller 1.
  • no printing material will remain on the leveling roller 1, thereby preventing the remaining printing material from adhering to the new printing layer and affecting The quality of the printed product; when the colors of the printing materials used in adjacent printing layers are inconsistent, it can also prevent the residual printing materials on the leveling roller 1 from adhering to the new printing layer, resulting in color mixing of the printing layers; the same, when adjacent When the performance of the printing materials used in the printing layer of the printing layer is inconsistent, the printing materials remaining on the leveling roller 1 can also be prevented from adhering to the new printing layer, which affects the performance of the printed product.

Abstract

提供了一种校平装置及三维打印设备，校平装置（1）包括：校平辊（11）以及刮除组件，刮除组件包括废料盒（13）以及刮板（12），废料盒（13）设置在校平辊（11）的一侧，废料盒（13）上具有腔体（131），刮板（12）的顶端由腔体（131）内伸出且与校平辊（11）接触，以刮除校平辊（11）上附着的打印材料；本装置通过刮板（12）可以将校平辊（11）上附着的打印材料刮除，避免校平辊（11）上附着打印材料导致的相邻打印层之间发生的混色。

Description

校平装置及三维打印设备
本申请要求于2020年01月16日提交中国专利局、申请号为202020090344.7、申请名称为“校平装置及打印机”的中国专利申请，以及于2020年04月23日提交中国专利局、申请号为202020635148.3、申请名称为“废料盒、刮除组件、校平装置、维护装置及三维打印设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及打印设备技术领域，尤其涉及一种校平装置及三维打印设备。
背景技术
随着打印技术的发展，快速成型技术(3D打印)已经逐渐应用在产品的制造工艺中，以简化产品的制造工艺。
相关技术中，一般采用三维打印设备包括打印平台、打印头、校平辊，打印头、校平辊均设置在打印平台的上方，工作时，打印头将打印材料打印在打印平台上，校平辊对打印在打印台上的打印材料进行校平，以保证打印材料的尺寸精度，随后打印在打印平台上的打印材料固化，之后打印平台沿高度方向移动，并重复上述步骤以形成下一层材料。
然而，打印材料容易附着在校平辊上，进而在打印下一层材料时附着在校平辊上的打印材料会附着在刚形成的打印材料上，容易造成相邻打印层之间的混色。
发明内容
本申请实施例的目的在于提供一种校平装置及三维打印设备，解决相关技术中打印材料容易附着在校平辊上，进而在打印下一层材料时附着在校平辊上的打印材料会附着在刚形成的打印材料上，容易造成相邻打印层之间的混色的技术问题。
第一方面，本申请实施例公开了一种校平装置，用于三维打印设备，所述三维打印设备用于形成打印层，包括：校平辊、以及刮除组件，所述刮除组件包括废料盒以及刮板，所述废料盒设置在所述校平辊的一侧，所述废料盒上具有腔体，刮板的顶端由所述腔体内伸出且与所述校平辊接触，以刮除所述校平辊上附着的打印材料。
在可以包括上述实施例的一些实施例中，所述刮板沿厚度方向(W)包括相对设置的第一面和第二面，所述腔体用于容纳所述刮板的至少部分，所述废料盒还设置有收集槽；
其中，所述腔体用于承接沿所述第一面流至所述腔体的废料，所述收集槽用于承接沿所述第二面流至所述收集槽的废料。
在可以包括上述实施例的一些实施例中，所述腔体与所述收集槽相通。
在可以包括上述实施例的一些实施例中，沿所述废料盒的宽度方向(X)，所述腔体的侧壁包括安装面和第一斜面；
所述安装面形成所述腔体的内壁的至少部分，所述安装面用于与所述第二面的至 少部分贴合；
沿所述废料盒的高度方向(Z)，所述第一斜面位于所述安装面的上方，所述第一斜面用于与所述第二面相围形成所述收集槽。
在可以包括上述实施例的一些实施例中，所述刮板的至少部分位于所述腔体内时，沿所述废料盒的长度方向(Y)，所述刮板的至少一端与所述腔体的内壁之间设有第一间隙，所述收集槽与所述腔体通过所述第一间隙相通。
在可以包括上述实施例的一些实施例中，所述腔体内设有隔板，沿所述废料盒的宽度方向(X)，所述隔板将所述腔体分隔为第一腔体与第二腔体；
所述隔板包括安装面，所述安装面用于与所述第一面或第二面的至少部分贴合，并使得所述第二面朝向所述第二腔体；
所述第二腔体用于承接沿所述第二面流至所述收集槽的废料。
在可以包括上述实施例的一些实施例中，沿所述废料盒的长度方向(Y)，所述第二腔体的尺寸大于所述刮板的尺寸；
所述第二腔体靠近所述第一腔体的侧壁设有导流孔，所述导流孔沿所述废料盒的宽度方向(X)延伸以连通所述第二腔体与所述第一腔体。
在可以包括上述实施例的一些实施例中，沿所述废料盒的长度方向(Y)，所述隔板的至少一端与所述第一腔体的内侧壁之间设有第二间隙，所述第一腔体与所述第二腔体通过所述第二间隙相通。
在可以包括上述实施例的一些实施例中，所述腔体的侧壁包括安装面和凹槽，所述安装面用于与所述第二面的至少部分贴合，并使得所述第二面朝向所述凹槽，所述凹槽沿所述废料盒的高度方向(Z)凹陷以承接沿所述第二面流至所述收集槽的废料。
在可以包括上述实施例的一些实施例中，所述安装面为倾斜面。
在可以包括上述实施例的一些实施例中，沿所述校平装置的长度方向，所述刮板的边缘超出所述校平辊的边缘。
在可以包括上述实施例的一些实施例中，还包括抵顶块，所述抵顶块设置在所述腔体内，且所述刮板夹设在所述抵顶块和所述收集槽的安装侧壁之间。
在可以包括上述实施例的一些实施例中，所述抵顶块具有朝向所述刮板的抵顶面，所述抵顶面与所述刮板贴合。
在可以包括上述实施例的一些实施例中，所述抵顶块朝向所述刮板的一端具有抵顶边，所述抵顶边与所述刮板接触。
在可以包括上述实施例的一些实施例中，所述抵顶块背离所述刮板的一端与所述收集槽的另一侧壁接触。
在可以包括上述实施例的一些实施例中，所述安装侧壁倾斜设置，以使所述收集槽的槽底面积小于所述收集槽的槽顶面积。
在可以包括上述实施例的一些实施例中，所述抵顶块与所述收集槽的槽底之间具有预设间隙。
在可以包括上述实施例的一些实施例中，所述校平装置还包括定位装置，所述定位装置与所述刮板和所述收集装置连接，所述定位装置用于限制所述刮板与所述收集装置之间的相对位置。
在可以包括上述实施例的一些实施例中，所述定位装置包括设置在所述安装侧壁上的定位销，所述刮板上设置有第一定位孔，所述定位销穿设在所述第一定位孔内。
在可以包括上述实施例的一些实施例中，所述刮板与所述校平辊之间具有预紧力。
在可以包括上述实施例的一些实施例中，所述抵顶块与所述收集装置之间通过紧固件连接，所述紧固件的连接力与所述收集槽的槽底垂直。
在可以包括上述实施例的一些实施例中，所述抵顶块背离所述收集槽的槽底的顶面上设置有引流槽，所述引流槽沿平行于所述校平辊中心线的方向延伸。
在可以包括上述实施例的一些实施例中，所述引流槽的槽底面为斜面。
在可以包括上述实施例的一些实施例中，所述引流槽的末端设置有集墨槽，所述集墨槽的宽度大于所述引流槽的宽度，所述集墨槽的深度大于所述引流槽的深度,所述集墨槽与所述引流槽连通。
在可以包括上述实施例的一些实施例中，所述校平装置还包括：排料装置，所述排料装置与所述收集槽连通，所述排料装置用于将所述收集槽内的打印材料排出。
在可以包括上述实施例的一些实施例中，所述排料装置包括收集管、泵以及收集容器，所述收集管的一端与所述收集槽连通，所述收集管的另一端与所述收集容器连通，所述泵设置在所述收集管上。
第二方面，本申请实施例公开了一种三维打印设备，包括如上所述的校平装置。
结合上述技术方案，本申请提供的校平装置及三维打印设备，通过刮板可以将校平辊上附着的打印材料刮除，进而避免校平辊上附着打印材料导致的相邻打印层之间发生的混色。
附图说明
图1为本申请所提供三维打印设备在一种具体实施例中的结构示意图；
图2为本申请所提供三维打印设备在另一种具体实施例中的结构示意图；
图3为本申请所提供校平装置在一种具体实施例中的剖视图；
图4为图4的A部放大图；
图5为图3的另一方向的剖视图；
图6为本申请所提供校平装置在另一种具体实施例中的剖视图；
图7为图6的另一方向在一种具体实施例中的剖视图；
图8为图6的另一方向在另一种具体实施例中的剖视图；
图9为本申请所提供校平装置在另一种具体实施例中的剖视图；
图10为本申请所提供维护装置在一种具体实施例中的剖视图；
图11为图9的B部放大图；
图12为本申请所提供维护装置在另一种具体实施例中的剖视图；
图13为本申请所提供维护装置在另一种具体实施例中的剖视图；
图14为本申请所提供的校平装置在一种具体实施例中的结构示意图一；
图15为本申请所提供的校平装置在又一种具体实施例中的结构示意图；
图16为本申请所提供的校平装置在另一种具体实施例中的结构示意图；
图17为本申请所提供的校平装置中定位销与刮片的连接示意图；
图18为本申请所提供的校平装置中刮片与校平辊之间具有预紧力的示意图；
图19为图18中C处的局部放大图；
图20为本申请所提供的校平装置中抵顶块上设置引流槽的结构示意图；
图21为本申请所提供的校平装置中引流槽的俯视图；
图22为本申请所提供的校平装置中抵顶块的剖视图；
图23为本申请所提供的校平装置中排料装置与收集槽的连接示意图；
图24为本申请所提供的三维打印设备的结构示意图。
附图标记说明：
1-校平装置；
11-校平辊；
12-刮板；
121-第一面；
122-第二面；
122a-第二斜面；
13-废料盒；
131-腔体
131a-收集槽；
131a1-导流孔；
131b-安装面；
131c-第一斜面；
131d-第一间隙；
131f-第二间隙；
131g-第一腔体；
131h-第二腔体；
131i-隔板；
2-打印平台；
3-打印头；
4-固化灯；
5-维护装置；
6-字车；
7-X轴移动机构；
8-Y轴移动机构；
30：抵顶块；
50：定位销；
60：排料装置；
80：打印层；
202：安装侧壁；
203：接触侧壁；
301：固定孔；
302：引流槽；
303：集墨槽；
304：槽底面；
401：第一定位孔；
601：第一收集管；
602：第二收集管；
603：泵；
604：收集容器。
具体实施方式
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。
应当明确，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
应当理解，本文中使用的术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
需要注意的是，本申请实施例所描述的“上”、“下”、“左”、“右”等方位词是以附图所示的角度来进行描述的，不应理解为对本申请实施例的限定。此外，在上下文中，还需要理解的是，当提到一个元件连接在另一个元件“上”或者“下”时，其不仅能够直接连接在另一个元件“上”或者“下”，也可以通过中间元件间接连接在另一个元件“上”或者“下”。
现有的三维喷墨打印机中，为了保证成型层的在高度方向Z上的尺寸精度，通常设置有校平装置，以对未固化的打印层进行校平使得打印层各个位置处的高度一致；校平装置一般可以包括校平辊、刮片和废料盒，高速旋转的校平辊与未固化的打印层接触，打印层上多余的材料则可以通过粘附在校平辊的表面被带走，粘附在校平辊表面上的材料在与刮片接触时被刮片刮下，并沿刮片表面流入废墨盒中。
但是在校平装置执行校平操作的过程中，可能由于校平辊和刮片的磨损导致刮片和校平辊表面存在间隙，校平辊上的材料从该间隙流动到刮片的背面，或者在刮片对校平辊的刮擦过程中，粘附在刮片表面的材料会沿刮片表面横向流动而附着到刮片的背面，此时，由于刮片的背面和废墨盒的侧壁贴合安装，则附着到刮片背面的材料会向下流动到废墨盒的外侧壁上，随着材料的堆积，存在材料从废墨盒的外侧壁滴落到打印物体上的可能，从而影响打印精度，也不利于校平装置的维护和清理。
如图1所示，为解决上述问题，本申请实施例提供了一种三维打印设备，三维打 印设备包括打印平台2、打印头3、固化灯4和校平装置1，打印平台2能够绕自身轴线旋转，打印头3、校平装置1和固化灯4沿打印平台2的旋转方向依次间隔安装于打印平台2的上方，打印头3用于将打印材料打印于打印平台2，以形成打印层，校平装置1能够将打印层上多余的打印材料带走，提高打印层在高度方向Z上的尺寸精度，固化灯4对执行了校平操作的打印层进行固化，以形成固化的成型层，完成一个成型层后，打印平台2能够下降一定距离或打印头3、固化灯4和校平装置1能够上升一定距离，使得打印头3能够在先前形成的打印层上继续沉积打印材料以形成后续的打印层。
或者，如图2所示，三维打印设备还包括字车6，X轴移动机构7和Y轴移动机构8，打印头3、校平装置1和固化灯4安装于字车6，字车6安装于X轴移动机构6，X轴移动机构6安装于Y轴移动机构7，打印平台2安装于Z轴移动机构(图中未示出)。字车6能够随X轴移动机构7和Y轴移动机构8沿三维打印设备的宽度方向X和长度方向Y运动，以带动打印头3沿打印平台2运动，便于打印出三维产品，校平装置1和固化灯4均设置为两个，校平装置1位于打印头3移动方向的两侧，固化灯4位于校平装置1移动方向的两侧，打印头3打印出打印层后，随字车6的移动，校平装置1能够对打印层上多余的打印材料带走，固化灯4对执行了校平操作的打印层进行固化。完成成型层后，打印平台随Z轴移动机构沿三维打印设备的高度方向Z运动，使打印平台下降一定距离使得打印头能够在先前形成的打印层上继续沉积打印材料以形成后续的打印层。
如图3至图9所示，该校平装置1包括校平辊11和刮除组件，校平辊11能够转动，且能够与打印层接触，以便附着打印层的多余打印材料，提高打印层在高度方向Z上的尺寸精度。刮除组件包括刮板12和废料盒13，刮板12用于与校平辊11的表面接触，以将校平辊11表面的附着物刮下，且刮板12位于校平辊11转动方向向下的一侧，废料盒13用于收集刮板12从校平辊11表面刮下的附着物；刮板12沿厚度方向W包括相对设置的第一面121和第二面122，第二面122的一端与校平辊11的外周贴合，在校平辊11转动的过程中刮除校平辊11上的附着物；废料盒13包括腔体131，刮板12远离校平辊11的一端位于腔体131内，并与腔体131的内侧壁固定，腔体131设有收集槽131a。其中，刮板12的第一面121朝向腔体131，校平辊11上的附着物能沿第一面121流至腔体131内，刮板12的第二面122朝向收集槽131a，校平辊11上的附着物能沿第二面122流至收集槽131a内，减小附着物由刮板12的第一面121溢出至第二面122后滴落至打印层上的风险。
由于校平辊11和刮板12的磨损导致刮板12和校平辊11表面贴合处存在间隙，校平辊11上的附着物可能从该间隙流动到刮板12的第二面122，或者在刮板12对校平辊11的刮擦过程中，粘附在刮板12表面的附着物会沿刮板12表面横向流动而附着到刮板12的第二面122。本申请实施例中，在腔体131的侧壁开设有收集槽131a，收集槽131a位于第二面122与校平辊11之间，用于收集沿第二面122流下的附着物，解决了校平辊11上的附着物沿第二面122流至腔体131的侧壁并滴落至打印层的问题，提高三维打印设备的打印精度，同时也有利于校平装置1的维护和清理。
其中，校平辊11可以是柱状的，也可以是其他能够对未固化的打印层进行校平的 形状。如，由于打印平台2旋转时，沿打印平台2的径向，不同位置处的线速度不同，为确保校平辊11的校平精度较为均匀，可以将校平辊11设计为圆锥状或圆台状，使得校平辊11在旋转时，其表面不同位置的线速度能够对应匹配打印平台2上径向位置不同的线速度，此时，校平辊11的轴线倾斜于打印平台2，使校平辊11的底部与打印平台2的表面平行。
进一步地，废料盒13的最底端不低于校平辊11的最底端，降低打印层随打印平台2转动过程中与第一废料盒13接触的风险。
如图5、图7和图9所示，在一种可能的设计中，沿校平装置1的高度方向Z，刮板12一端紧压于校平辊11的辊身，以刮除辊身上的附着物，另一端固定于腔体131内，以使附着物能够沿刮板12流至腔体131内。
如图5、图7和图9所示，在一种可能的设计中，沿校平装置1的长度方向Y，刮板12的边缘超出校平辊11的边缘，即刮板12的长度长于校平辊11的长度，以便于刮板12能够将校平辊11表面的附着物刮除干净；并且，腔体131的长度长于刮板12的长度，以便承接沿刮板12流至腔体131的废料。
如图3、图6和图8所示，在一种可能的设计中，腔体131与收集槽131a相通。即收集槽131a内的废料能够流至腔体131内，腔体131内的废料也能流至收集槽131a内，通常收集槽131a内的体积较小，以减小随着废料在收集槽131a内堆积而溢出收集槽131a的风险。
如图3至图5所示，在一种可能的设计中，沿校平装置1的宽度方向X，腔体131靠近校平辊11的侧壁包括安装面131b和第一斜面131c；安装面131b形成腔体131的内壁的至少部分，第二面122的至少部分与安装面131b贴合；沿校平装置1的高度方向Z，第一斜面131c位于安装面131b的上方，第二面122与第一斜面131c相围形成收集槽131a，以容纳沿第二面122流下的打印材料，减小第二面122流下的打印材料从腔体131的侧壁处滴落的风险。
如图3至图5所示，进一步地，沿校平装置1的长度方向Y，刮板12的至少一端与腔体131的内壁之间设有第一间隙131d，收集槽131a与腔体131通过第一间隙131d相通。本申请实施例中，沿校平装置1的长度方向Y，腔体131的长度长于刮板12的长度，以使刮板12的至少一端与腔体131的内侧壁之间具有第一间隙131d，第一斜面131c的长度大于刮板12的的长度，使刮板12上的打印材料能够完全流至腔体131或收集槽131a内；并且，通过第一间隙131d使收集槽131a与腔体131相通，使收集槽131a内的废料能够流至腔体131内，节省经常拆卸校平装置1来清理收集槽131a内的废料的时间。
具体地，由于三维打印设备中使用的打印材料的粘度通常较大，为了便于废料从收集槽131a流至腔体131中，收集槽131a的底部可以沿校平装置1的长度方向Y设置为倾斜状，即收集槽131a内的打印材料会由于收集槽131a底部的倾斜而更快地流入腔体131中；或者，收集槽131a的底部也可以设置为中间部分高于两端部分，即收集槽131a内的打印材料由收集槽131a的两端流入腔体131内。
更进一步地，为了便于清理腔体131中的打印材料，校平装置1还可以包括抽吸组件；如，抽吸组件可以包括抽吸管、抽吸泵和废料瓶，抽吸管一端设置于腔体131 中，另一端设置于废料瓶中，抽吸泵通过抽吸管将腔体131中的打印材料抽吸至废料瓶中，无需拆卸校平装置1对废料盒13进行清理。
为了能够合理控制抽吸泵的工作，还可以在腔体131中设置液位传感器，液位传感器用于检测腔体131中打印材料的液位，当腔体131中的液位达到第一预设高度时，启动抽吸组件工作，当腔体131内的液位下降至第二预设高度时，停止抽吸组件工作，其中，第一预设高度大于第二预设高度。
为了便于抽吸组件对腔体131内打印材料的抽吸，腔体131的底部也可以设置为倾斜状，将抽吸管放置在腔体131内较低位置，以能够便于抽吸组件对腔体131内的打印材料的抽吸。
如图6所示，在一种可能的设计中，腔体131内设有隔板131i，沿校平装置1的宽度方向X，隔板131i将腔体131分隔为第一腔体131g与第二腔体131h；隔板131i包括安装面131b，安装面131b用于与第一面121或第二面122的至少部分贴合，并使得第二面122朝向第二腔体131h；第二腔体131h用于承接第二面122流至收集槽131a的废料。本实施例中，刮板12可以固定安装于第一腔体131g内，即隔板131i的安装面131b朝向第一腔体131g，刮板12的第二面122与安装面131b的贴合；刮板12也可以固定安装于第二腔体131h内，即隔板131i的安装面131b朝向第二腔体131h，刮板12的第一面121与安装面131b贴合。并且，刮板12的第一面121朝向第一腔体131g，刮板12的第二面122朝向第二腔体131h，校平辊11上的附着物能够沿第一面121流至第一腔体131g内，校平辊11上的附着物能够沿第二面122流至第二腔体131h内。
如图6和图7所示，在一种可能的设计中，沿校平装置1的长度方向Y，腔体131的尺寸大于刮板12的尺寸。因此，第二腔体131h的尺寸大于刮板12的尺寸，以使刮板12上的废料能够完全流入腔体131内；第二腔体131h靠近第一腔体131g的侧壁设有导流孔131a1，导流孔131a1沿校平装置1的宽度方向X延伸以连通第二腔体131h与第一腔体131g，实现第一腔体131g与第二腔体131h相通，即第二腔体131h内的打印材料能够通过导流孔131a1流至第一腔体131g中。其中，沿校平装置1的长度方向Y，导流孔131a1可以设置于第一腔体131g未与刮板12贴合的位置，或者导流孔131a1也可以设置于第一腔体131g与刮板12贴合位置，在刮板12设置与导流孔131a1相通的通孔即可。
如图6和图8所示，在一种可能的设计中，沿校平装置1的长度方向Y，隔板131i的至少一端与第一腔体131g的内侧壁之间设有第二间隙131f，第一腔体131g与第二腔体131h通过第二间隙131f相通。第一腔体131g和第二腔体131h的长度大于隔板131i的长度，使隔板131i的至少一端与第一腔体131g的内侧壁之前具有第二间隙131f，使刮板12上的附着物能够完全流至第一腔体131g或第二腔体131h内，且第二腔体131h内的废料可以通过第二间隙131f流至第一腔体131g内，减小随附着物的堆积溢出第二腔体131h的风险。
本实施例中，第二腔体131h的体积小于第一腔体131g的体积，使得刮板12的安装位置靠近校平辊11，以确保刮板12倾斜的斜率能够使废料流动顺畅。
如图9所示，在一种可能的设计中，腔体131的侧壁具有一定厚度，腔体131的 侧壁包括安装面131b和凹槽，安装面131b用于与第二面122的至少部分贴合，并使得第二面122朝向凹槽，凹槽沿废料盒13的高度方向Z凹陷，以承接沿第二面122流至凹槽的废料。该凹槽为收集槽131a，使溢出到第二面122的废料能够流入该凹槽内。
在一种可能的设计中，安装面131b为倾斜面。本申请实施例中，安装面131b可以为倾斜面，从而使刮板12为倾斜设置；安装面131b也可以为竖直斜面，从而使刮板12为竖直竖直。但相比于刮板12竖直设置，本实施例中倾斜设置的刮板12更便于与校平辊11贴合，且校平辊11上的附着物能够沿刮板51流动；竖直设置的刮板12刮除校平辊11上的附着物后，附着物受自身重力向下掉落，有可能会溅出腔体131落至打印层上。
具体地，安装面131b与水平面之前的夹角大于第一斜面131c与水平面之间的夹角，以使第二面122与第一斜面131c相围能够形成第一收集槽131a，其中，安装面131b与水平面之间的夹角可以设置为50°～70°。
如图10至图13所示，本申请实施例还提供了一种维护装置5，用于三维打印设备，对打印头3的喷射表面进行刮擦，以将附着在打印头3的喷射表面上的附着物刮除。该维护装置5包括刮除组件，刮除组件包括刮板12和废料盒13，刮板12的一端能够与打印头3的喷射表面接触，以刮除打印头3喷射表面的附着物，废料盒13用于收集刮板12从打印头3喷射表面刮下的废料。其中，该废料盒13可以为以上任一项实施例中校平装置的废料盒13；刮板12位于废料盒13中，与废料盒13的内侧壁固定，刮板12沿其厚度方向包括相对设置的第一面121和第二面122，在打印机沿打印平台2的径向往复运动的过程中，第一面121与喷射完打印材料的打印头3相对，随打印头3的移动，第一面121对打印头3的喷射表面进行刮擦。废料盒13设有收集槽131a，第一面121朝向废料盒13的内腔，打印头3喷射表面的附着物能沿第一面121流至废料盒13内，第二面122朝向收集槽131a，打印头3喷射表面的附着物能沿第二面122流至收集槽131a，以减小废料由刮板12的第一面121溢出至第二面122后溢出的风险。
本实施例中，对刮板12的具体安装方式不作限制，只要能够固定在废料盒13内，并能够对打印头3的喷射表面进行刮擦即可，具体可以是竖直安装，也可以是倾斜安装。
如图10和图11所示，在一种可能的设计中，第二面122包括第二斜面122a，沿维护装置5的高度方向Z，第二斜面122a与第一面121相交，第二斜面122a与第一面121的相交处用于刮除打印头3喷射表面附着的附着物。
收集槽131a可设置为多种结构，如，沿维护装置5的长度方向Y，废料盒13与第二面122贴合的侧壁设有安装面131b和第一斜面131c，安装面131b用于与第二面122的至少部分贴合，第一斜面131c与第二面122相围形成收集槽131a。此时，收集槽131a与废料盒13的内腔通过刮板12隔开；或者，在废料盒13的内侧壁与外侧壁之间开设凹槽，凹槽为收集槽131a；或者，在废料盒13内设置隔板131i，隔板131i将废料盒13分隔为第一腔体131g和第二腔体131h，其中，刮板12可以位于第一腔体131或第二腔体131内，第二面122与隔板131i贴合固定，第二腔体131为收集槽 131a。
并且，废料盒13的内腔与收集槽131a相通，即收集槽131a内的打印材料能够流至废料盒13中，废料盒13中的打印材料也能流至收集槽131a内，减小收集槽131a或废料盒13堆积的打印材料过多溢出的风险。
本实施例中收集槽131a的形成方式和具体结构与以上任一实施例中校平装置1中的收集槽131a的形成方式和具体结构相同，此处不再予以赘述。
一般三维打印设备(3D打印机)包括打印头以及校平装置，校平装置包括位于打印头一侧的校平辊、设置在校平辊一侧的收集槽以及刮片，刮片设置在收集槽内，并且刮片通过紧固螺栓等方式与收集槽的内壁连接，刮片的顶端由收集槽伸出，且与校平辊接触；在使用的过程中，打印头移动并喷射打印材料，以形成打印层；校平辊和收集槽移动，校平辊可以带走打印层上多余的材料，以保证打印层厚度的精度；校平辊转动的同时，刮片会将校平辊上的材料刮除，并收集在收集槽内。
然而，相关技术中刮片通过紧固螺栓等方式与收集槽的内壁连接，刮片局部受力，使得刮片中与校平辊接触的刮除线压力不均匀，容易与校平辊表面产生缝隙，刮除线不能完全与校平辊接触，刮片难以将校平辊上的打印材料刮干净；再次校平时，校平辊上残留的打印材料会附着在新的打印层上，影响打印产品的质量。当相邻的打印层所用的打印材料颜色不一致时，校平辊上残留的打印材料附着在新的打印层后，会导致打印层混色；当相邻的打印层所用的打印材料性能不一致时，校平辊上残留的打印材料附着在新的打印层后，会影响打印产品的性能。
图14为本实施例提供的校平装置的结构示意图一；图15为本实施例提供的校平装置的结构示意图二；图16为本实施例提供的校平装置的结构示意图三；图17为本实施例提供的校平装置中定位销与刮片的连接示意图；图18为本实施例提供的校平装置中刮片与校平辊之间具有预紧力的示意图；图19为图18中C处的局部放大图；图20为本实施例提供的校平装置中抵顶块上设置引流槽的结构示意图；图21为本实施例提供的校平装置中引流槽的俯视图；图22为本实施例提供的校平装置中抵顶块的剖视图；图23为本实施例提供的校平装置中排料装置与收集槽的连接示意图；图24为本实施例提供的三维打印设备的结构示意图。
请参照图14-图24。本实施例提供一种校平装置，包括：校平辊1、废料盒13、刮板12以及抵顶块30，废料盒13设置在校平辊1的一侧，废料盒13上具有腔体131，抵顶块30设置在腔体131内，且刮板12夹设在抵顶块30和腔体131的安装侧壁202之间，刮板12的顶端由腔体131内伸出且与校平辊1接触。
本实施例中，校平装置可以应用在三维打印设备上；三维打印设备上设置打印头3，使用时，打印头3移动，并且在打印头3移动的同时打印头3向外喷射打印材料，以形成打印层80；校平装置对形成的打印层80进行校平，以保证打印层80的尺寸精度；重复上述过程，可以依次的形成多个打印层80，多个打印层80层叠构成三维产品。
本实施例中，校平辊1可转动的与三维打印设备连接，校平辊1的轴线与打印层80平行，以在校平辊1转动的同时，使打印层80上多余的材料附着在校平辊1上， 以保证打印层80的尺寸精度。
废料盒13可以设置在校平辊1背离打印头3的一侧，以收集附着在校平辊1上的打印材料，废料盒13可以呈长方体状、三棱柱状等规则形状，当然废料盒13还可以呈其他的形状，本实施例对收集装置的20的形状不作限制，只要保证废料盒13上设置有腔体131即可，腔体131可以收集打印材料；抵顶块30设置在腔体131内，并且刮板12夹设在抵顶块30和腔体131的安装侧壁202之间，以实现对刮板12的固定。示例性的，抵顶块30可以主要由铜、铁、铝等金属材质构成，当然抵顶块30还可以主要塑料或者橡胶等非金属材质构成。刮板12可以主要由铜、铁、铝等金属材质构成，当然刮板12还可以主要由塑料或者橡胶等非金属材质构成。
本实施例中，刮板12的底端夹设在抵顶块30和腔体131的安装侧壁202之间，刮板12的顶端由腔体131伸出，并且与校平辊1接触；进一步地，刮板12的顶端具有与校平辊1接触的刮除线，在校平辊1转动时，刮除线可以将附着在校平辊1上的打印材料刮除。
本实施例提供的校平装置，废料盒13设置在校平辊1的一侧，废料盒13上设置有腔体131，抵顶块30设置在腔体131内，刮板12夹设在抵顶块30和腔体131的安装侧壁202之间，刮板12的顶端由腔体131内伸出且与校平辊1接触；刮板12夹设在抵顶块30和安装侧壁202之间，刮板12的受力均匀，提高了刮板12上刮除线的直线度，使得刮除线完全与校平辊1贴合，刮板12可以将校平辊1上附着的打印材料完全刮除，提高了打印产品的质量。
另外，刮板12可以将校平辊1上的打印材料完全刮除，再次校平时，校平辊1上不会残留打印材料，进而避免了残留的打印材料附着在新的打印层上，而影响打印产品的质量；当相邻的打印层所用的打印材料颜色不一致时，还可以避免校平辊1上残留的打印材料附着在新的打印层，导致的打印层混色；相同的，当相邻的打印层所用的打印材料性能不一致时，也可以避免校平辊1上残留的打印材料附着在新的打印层，而影响打印产品的性能。
继续参照图14-图24，本实施例中，安装侧壁202倾斜设置，以使腔体131的槽底面304的面积小于腔体131的槽顶面积。如此设置，可以使刮板12相对于腔体131的槽底倾斜，从校平辊1上刮除的打印材料可以经刮板12进入到腔体131内，进而便于收集打印材料。
示例性的，安装侧壁202与竖直面的夹角可以为20°-30°(如25°)，当然，该夹角还可为其他的夹角，本实施例对此不作限制。
本实施例中，腔体131的截面可以呈梯形，其中，安装侧壁202为与梯形的一个腰对应的侧壁，梯形的另一个腰对应的侧壁为接触侧壁203，抵顶块20放置在腔体131后，抵顶块30位于接触侧壁203和安装侧壁202之间，并且刮板12夹设在安装侧壁202和抵顶块30之间，以固定刮板12。进一步地，抵顶块20背离刮板12的一端与接触侧壁203接触，接触侧壁203可以向刮板12抵顶抵顶块20，以使抵顶块20进一步夹紧刮板12。
进一步地，抵顶块30与腔体131的槽底之间具有预设间隙。如此设置，即使抵顶块30的尺寸存在误差，也可以将抵顶块30安装在腔体131内，可以降低对抵顶块30 的尺寸精度要求，便于校平装置的加工制造。
值得说明的是，针对不同的抵顶块30，抵顶块30与腔体131的槽底之间的预设间隙可不同，以保证抵顶块30和安装侧壁202可以夹紧刮板12，以实现对刮板12的固定。
继续参照图14、17、18、20、23、24，在一个可实现的方式中，抵顶块30具有朝向刮板12的抵顶面，抵顶面与刮板12贴合。如此设置，抵顶块30与刮板12之间面接触，抵顶块30与刮板12之间的接触面积较大，提高了对刮板12的固定效果；另外，也提高了刮板12受力的均匀性，进一步使刮板12上的刮除线完全与校平辊1贴合，以将校平辊1上附着的打印材料完全刮除。
示例性的，腔体131的截面可以呈矩形，刮板12与安装侧壁202贴合后，刮板12与腔体131的槽底垂直，相应的，抵顶块30的截面可以呈矩形，抵顶块30放入到腔体131后，抵顶块30朝向刮板12的抵顶面与刮板12贴合。
当然，当腔体131的截面呈梯形时，刮板12与腔体131的内壁贴合后刮板12倾斜设置，相应的，抵顶块30的截面可以呈梯形，抵顶块30放入到腔体131后，抵顶块30朝向刮板12的抵顶面与刮板12贴合。如此设置，抵顶块30与刮板12之间面接触，以实现对刮板12的固定，刮板12受力均匀，使得刮板12上的刮除线完全与校平辊1贴合，刮板12可以将校平辊1上附着的打印材料完全刮除
继续参照图15和图16，在其他的实现方式中，抵顶块30朝向刮板12的一端具有抵顶边，抵顶边与刮板12接触。如此设置，抵顶块30与刮板12之间线接触，以实现对刮板12的固定，刮板12受力均匀，使得刮板12上的刮除线完全与校平辊1贴合，刮板12可以将校平辊1上附着的打印材料完全刮除。
如图15所示，示例性的，腔体131的截面可以呈梯形，相应的，抵顶块30的截面可以呈梯形，刮板12与安装侧壁202贴合后倾斜，抵顶边可以为抵顶块30的上底和腰交界的棱边；抵顶边也可以为抵顶块30上下底和腰交界的棱边。如图16所示，当然，腔体131的截面呈梯形时，抵顶块30的截面还可以呈矩形，相应的抵顶边可以为抵顶块30朝向刮板12的侧面与抵顶块30朝向腔体131槽底的侧面交界的棱边。
本实施例中，抵顶边还可以设置在抵顶块30朝向刮板12的侧面中部，示例性的，当抵顶块30的截面呈矩形时，可以在抵顶块30朝向刮板12的侧面中部凸出形成抵顶边。
本实施例中，抵顶块30的截面并不限于梯形和矩形，抵顶块30的截面还可呈三角形等规则形状，当然抵顶块30的截面还可以呈其他的不规则形状。
继续参照图17，本实施例中，校平装置还包括定位装置，定位装置与刮板12和废料盒13连接，定位装置用于限制刮板12与废料盒13之间的相对位置。如此设置，可以对刮板12进行定位，进而避免了在安装抵顶块30的过程中刮板12移动，进而提高了刮板12的安装精度；另外，在使用的过程中定位装置可以阻止刮板12移动，进而避免刮板12的移动而导致的刮板12与校平辊1接触不良。
如图17所示，示例性的，定位装置包括设置在安装侧壁202上的定位销50，刮板12上设置有第一定位孔401，定位销50穿设在第一定位孔401内。通过定位销50实现对刮板12和腔体131之间的定位，与刮板12之间连接牢靠，定位效果较好。
进一步地，设置在安装侧壁202上的定位销50可以为多个，相应的，刮板12上设置多个第一定位孔401，每一个定位销50穿设一个第一定位孔401；多个定位销50可以提高对刮板12的定位效果。
值得注意的是，合理地设置定位销50的长度，可以使定位销50朝向抵顶块30的一端与刮板12朝向抵顶块30的侧面平齐、或者使定位销50朝向抵顶块30的一端位于第一定位孔401内部，进而避免定位销50阻止抵顶块30与刮板12接触。
在其他实现方式中，定位销50可以设置在刮板12背离抵顶块30的侧面上，在安装侧壁202上设置第二定位孔，这样无需在刮板12上设置第一定位孔401，安装时将刮板12贴附在安装侧壁202上，即可使定位销50穿设在第二定位孔内；当然，也可以在刮板12上设置第一定位孔401，并且在安装侧壁202上设置第二定位孔，安装时，可以将刮板12贴附在安装侧壁202上，之后将定位销50穿设在第一定位孔401和第二定位孔内。
继续参照图18和图19，本实施例中，刮板12与校平辊1之间具有预紧力。如此设置，可以提高刮板12与校平辊1之间的接触力，以进一步使刮板12上的刮除线完全与校平辊1贴合，以使刮板12将校平辊1上附着的打印材料完全刮除，提高打印产品的质量。
示例性的，在安装的过程中，先使刮板12与校平辊1接触，之后再使刮板12向着校平辊1移动预设距离，以使刮板12与校平辊1之间具有预紧力,同时起到了抵偿使用过程中由机械振动引起的误差的作用；示例性的，预设距离可以为0.4mm-0.7mm，当然预设距离还可以为其他的距离，本实施例对此不作限制。
本实施例中，刮板12可以为弹性片，以在刮板12与校平辊1之间具有预紧力时，刮板12发生弹性形变，刮板12发生弯曲，以进一步使刮板12上的刮除线完全与校平辊1贴合，以使刮板12将附着在校平辊1上的打印材料完全刮除。
继续参照图17，本实施例中，抵顶块30与废料盒13之间通过紧固件连接，并且紧固件的连接力与收集槽301的槽底垂直。抵顶块30与废料盒13之间通过紧固件连接，可以使抵顶块30和安装侧壁202夹紧刮板12，进而提高了对刮板12固定效果；另外，抵顶块30通过紧固件与废料盒13连接，还可以避免在使用的过程中抵顶块30在腔体131内抖动，进而避免抵顶块30抖动导致的刮板12移动，保证刮板12上的刮除线能够始终完全与校平辊1接触，以将校平辊1上附着的打印材料完全刮除。
示例性的，紧固件可以为螺栓或者螺钉，可以在抵顶块30上设置第一固定孔301，第一固定孔301的中心线与腔体131的槽底垂直，相应的在腔体131的槽底上设置螺纹孔，螺栓或者螺钉穿过第一固定孔301后与螺纹孔配合；当然，在抵顶块30上设置第一固定孔301的时，还可以在腔体131的槽底上设置第二固定孔301，螺栓或者螺钉穿过第一固定孔301和第二固定孔后与螺母配合，以实现抵顶块30与腔体131之间的连接。
继续参照图18、图20-图23，本实施例中，抵顶块30背离腔体131槽底的顶面上设置有引流槽302，引流槽302沿平行于校平辊1中心线的方向延伸。如此设置，被刮板12刮除的打印材料可以收集到引流槽302内，便于对打印材料的收集。
示例性的，引流槽302的截面可以呈矩形、梯形等规则形状的，当然引流槽302 还可以呈其他的不规则形状，本实施例对此不作限制。
本实施例中，引流槽302的槽底面304为斜面。如此设置，以使落入到引流槽302内的打印材料在重力的作用下沿槽底面304流动并汇聚，以便于对引流槽302内的打印材料进行处理。
继续参照图21和图22，本实施例中，引流槽302的末端设置有集墨槽303，集墨槽303的宽度大于引流槽302的宽度，集墨槽303的深度大于引流槽302的深度，集墨槽303与引流槽302连通。如此设置，被刮板12刮除的打印材料经引流槽302流入到集墨槽303内；另外，集墨槽303的宽度大于引流槽302的宽度，集墨槽303的深度大于引流槽302的深度，可以增大集墨槽303的体积，以提高集墨槽303能够储存的打印材料的体积。
值得注意的是，集墨槽303的宽度和引流槽302的宽度为垂直于引流槽302延伸方向(图21中竖直方向)的宽度；集墨槽303的深度和引流槽302的深度为垂直于腔体131槽底方向(图21中垂直于纸面的方向)的深度。
如图21和图22所示，当抵顶块30通过螺栓或者螺钉与废料盒13连接时，可以将第一固定孔301设置在引流槽302的槽底面301上，以免螺栓或螺钉与其他物体剐蹭，另外，与将第一固定孔301设置在引流槽302外相比还可以避免螺栓或者螺钉占用抵顶块30的空间。
如图22所示，在引流槽302的槽底面304为斜面时，槽底面304可以向集墨槽303倾斜，以使落入到引流槽302内的打印材料流入到集墨槽303内。如此设置，槽底面304朝向集墨槽303的一端较背离集墨槽303的一端更靠近地面，以在重力的作用下，进入到引流槽302的打印材料可以自动流入到集墨槽303内。
继续参照图23，本实施例中，校平装置还包括：排料装置60，排料装置60与集墨槽303连通，排料装置60用于将腔体131内收集的打印材料派出。如此设置，排料装置60可以将收集到腔体131内的打印材料抽出，以便于清除腔体131内的打印材料，无需手动清除腔体131内的打印材料，操作方便。
示例性的，排料装置60可以包括收集管、泵603以及收集容器604，收集管的一端与腔体131连通，收集管的另一端与收集容器604连通，泵603设置在收集管上。泵603可以通过收集管将腔体131内的打印材料输送至收集容器604，便于清除腔体131内的打印材料。
进一步地，在抵顶块30的顶面设置引流槽302，引流槽302的末端设置有集墨槽303的实现方式中，收集管的一端可以与集墨槽303连通，以排出收集到集墨槽303内的打印材料。
收集管包括第一收集管601和第二收集管602，第一收集管601的一端与集墨槽303连通，第一收集管601的另一端与泵603的进口连通，第二收集管602的一端与泵603的出口连通，第二收集管602的另一端与收集容器604连通。
本实施例中，排料装置60还可以包括风机、收集瓶以及导管，收集瓶的顶端设置有第一开口和第二开口，风机与第一开口连通，导管的一端与第二开口连通，收集的另一端与集墨槽303连通；在使用时，风机工作以将收集瓶内的空气抽出，收集瓶内的气压降低，以通过导管将集墨槽303内的打印材料抽入到收集瓶内。
排料装置60还可以仅包括收集瓶和导管，在集墨槽的槽底上设置流动孔，导管的一端与流动孔连通，导管的另一端与收集瓶连通，打印材料流入到集墨槽303后，在重力的作用下通过导管流入到收集瓶内。
继续参照图24，在本实施例中，还提供一种三维打印设备，包括打印头3以及如上所述的校平装置，校平装置设置在打印头3的一侧。
本实施例中的校平装置与如上所述的校平装置大体相同，在此不再赘述。
本实施例中的三维打印设备，废料盒13设置在校平辊1的一侧，废料盒13上设置有腔体131，抵顶块30设置在腔体131内，刮板12夹设在抵顶块30和腔体131的安装侧壁202之间，刮板12的顶端由腔体131内伸出且与校平辊1接触；刮板12夹设在抵顶块30和安装侧壁202之间，刮板12的受力均匀，提高了刮板12上刮除线的直线度，使得刮除线完全与校平辊1贴合，刮板12可以将校平辊1上附着的打印材料完全刮除，提高了打印产品的质量。
另外，刮板12可以将校平辊1上的打印材料完全刮除，再次校平时，校平辊1上不会残留打印材料，进而避免了残留的打印材料附着在新的打印层上，而影响打印产品的质量；当相邻的打印层所用的打印材料颜色不一致时，还可以避免校平辊1上残留的打印材料附着在新的打印层，导致的打印层混色；相同的，当相邻的打印层所用的打印材料的性能不一致时，也可以避免校平辊1上残留的打印材料附着在新的打印层，而影响打印产品的性能。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (27)

  1. 一种校平装置，用于三维打印设备，所述三维打印设备用于形成打印层，其特征在于，包括：校平辊、以及刮除组件，所述刮除组件包括废料盒以及刮板，所述废料盒设置在所述校平辊的一侧，所述废料盒上具有腔体，所述刮板的顶端由所述腔体内伸出且与所述校平辊接触，以刮除所述校平辊上附着的打印材料。
  2. 根据权利要求1所述的校平装置，其特征在于，所述刮板沿厚度方向(W)包括相对设置的第一面和第二面，所述腔体用于容纳所述刮板的至少部分，所述废料盒还设置有收集槽；
    其中，所述腔体用于承接沿所述第一面流至所述腔体的废料，所述收集槽用于承接沿所述第二面流至所述收集槽的废料。
  3. 根据权利要求1所述的校平装置，其特征在于，所述腔体与所述收集槽相通。
  4. 根据权利要求3所述的校平装置，其特征在于，沿所述废料盒的宽度方向(X)，所述腔体的侧壁包括安装面和第一斜面；
    所述安装面形成所述腔体的内壁的至少部分，所述安装面用于与所述第二面的至少部分贴合；
    沿所述废料盒的高度方向(Z)，所述第一斜面位于所述安装面的上方，所述第一斜面用于与所述第二面相围形成所述收集槽。
  5. 根据权利要求4所述的校平装置，其特征在于，所述刮板的至少部分位于所述腔体内时，沿所述废料盒的长度方向(Y)，所述刮板的至少一端与所述腔体的内壁之间设有第一间隙，所述收集槽与所述腔体通过所述第一间隙相通。
  6. 根据权利要求3所述的校平装置，其特征在于，所述腔体内设有隔板，沿所述废料盒的宽度方向(X)，所述隔板将所述腔体分隔为第一腔体与第二腔体；
    所述隔板包括安装面，所述安装面用于与所述第一面或第二面的至少部分贴合，并使得所述第二面朝向所述第二腔体；
    所述第二腔体用于承接沿所述第二面流至所述收集槽的废料。
  7. 根据权利要求6所述的校平装置，其特征在于，沿所述废料盒的长度方向(Y)，所述第二腔体的尺寸大于所述刮板的尺寸；
    所述第二腔体靠近所述第一腔体的侧壁设有导流孔，所述导流孔沿所述废料盒的宽度方向(X)延伸以连通所述第二腔体与所述第一腔体。
  8. 根据权利要求6所述的校平装置，其特征在于，沿所述废料盒的长度方向(Y)，所述隔板的至少一端与所述第一腔体的内侧壁之间设有第二间隙，所述第一腔体与所述第二腔体通过所述第二间隙相通。
  9. 根据权利要求3所述的校平装置，其特征在于，所述腔体的侧壁包括安装面和凹槽，所述安装面用于与所述第二面的至少部分贴合，并使得所述第二面朝向所述凹槽，所述凹槽沿所述废料盒的高度方向(Z)凹陷以承接沿所述第二面流至所述收集槽的废料。
  10. 根据权利要求3-8任一项所述的校平装置，其特征在于，所述安装面为倾斜面。
  11. 根据权利要求1所述的校平装置，其特征在于，沿所述校平装置的长度方向， 所述刮板的边缘超出所述校平辊的边缘。
  12. 根据权利要求1所述的校平装置，其特征在于，还包括抵顶块，所述抵顶块设置在所述腔体内，且所述刮板夹设在所述抵顶块和所述收集槽的安装侧壁之间。
  13. 根据权利要求12所述的校平装置，其特征在于，所述抵顶块具有朝向所述刮板的抵顶面，所述抵顶面与所述刮板贴合。
  14. 根据权利要求12所述的校平装置，其特征在于，所述抵顶块朝向所述刮板的一端具有抵顶边，所述抵顶边与所述刮板接触。
  15. 根据权利要求13或14所述的校平装置，其特征在于，所述抵顶块背离所述刮板的一端与所述收集槽的另一侧壁接触。
  16. 根据权利要求15所述的校平装置，其特征在于，所述安装侧壁倾斜设置，以使所述收集槽的槽底面积小于所述收集槽的槽顶面积。
  17. 根据权利要求16所述的校平装置，其特征在于，所述抵顶块与所述收集槽的槽底之间具有预设间隙。
  18. 根据权利要求12所述的校平装置，其特征在于，所述校平装置还包括定位装置，所述定位装置与所述刮板和所述收集装置连接，所述定位装置用于限制所述刮板与所述收集装置之间的相对位置。
  19. 根据权利要求18所述的校平装置，其特征在于，所述定位装置包括设置在所述安装侧壁上的定位销，所述刮板上设置有第一定位孔，所述定位销穿设在所述第一定位孔内。
  20. 根据权利要求12所述的校平装置，其特征在于，所述刮板与所述校平辊之间具有预紧力。
  21. 根据权利要求12所述的校平装置，其特征在于，所述抵顶块与所述收集装置之间通过紧固件连接，所述紧固件的连接力与所述收集槽的槽底垂直。
  22. 根据权利要求12所述的校平装置，其特征在于，所述抵顶块背离所述收集槽的槽底的顶面上设置有引流槽，所述引流槽沿平行于所述校平辊中心线的方向延伸。
  23. 根据权利要求22所述的校平装置，其特征在于，所述引流槽的槽底面为斜面。
  24. 根据权利要求23所述的校平装置，其特征在于，所述引流槽的末端设置有集墨槽，所述集墨槽的宽度大于所述引流槽的宽度，所述集墨槽的深度大于所述引流槽的深度,所述集墨槽与所述引流槽连通。
  25. 根据权利要求12所述的校平装置，其特征在于，所述校平装置还包括：排料装置，所述排料装置与所述收集槽连通，所述排料装置用于将所述收集槽内的打印材料排出。
  26. 根据权利要求25所述的校平装置，其特征在于，所述排料装置包括收集管、泵以及收集容器，所述收集管的一端与所述收集槽连通，所述收集管的另一端与所述收集容器连通，所述泵设置在所述收集管上。
  27. 一种三维打印设备，其特征在于，包括权利要求1-26任一项所述的校平装置。
PCT/CN2020/132943 2020-01-16 2020-11-30 校平装置及三维打印设备 WO2021143378A1 (zh)

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WO2017009832A1 (en) * 2015-07-13 2017-01-19 Stratasys Ltd. Leveling apparatus for a 3d printer
US20190210282A1 (en) * 2018-01-11 2019-07-11 Kenji Sugiura Three-dimensional fabricating apparatus, method for producing three-dimensional object, and recording medium
US20190240909A1 (en) * 2018-02-08 2019-08-08 Mimaki Engineering Co., Ltd. Three-dimensional object shaping device
CN209305001U (zh) * 2018-11-19 2019-08-27 珠海赛纳打印科技股份有限公司 一种校平装置及三维打印机

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