Scraper structure for 3D printer and 3D printer

Abstract

The scraper structure comprises a base, a scraper and a threaded adjusting part, the scraper is connected with the base in a sliding mode, the threaded adjusting part is arranged on the scraper, the threaded adjusting part is connected with the scraper in a threaded mode, and the scraper is arranged on the base. And the lower movable end part of the thread adjusting piece is propped against the base and is supported by the base. The levelness or the height of the scraper can be adjusted conveniently. The utility model further provides a 3D printer.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printer technical field especially relates to a scraper structure for 3D printer and 3D printer. BACKGROUND

[0002] 3D printer is to resin layer by layer photocuring finally gets stereoscopic object. The material used by 3D printer can be resin with good fluidity, also can be resin with poor fluidity. Add some ceramic microparticles or metal microparticles and other materials in the resin with poor fluidity, need scraper to scrape even after printing in the process, otherwise each layer will be uneven. The thickness of material layer is consistent when the scraper moves, so the height of the scraper needs to be adjusted. CN111923186A discloses a precision adjustable 3D printer scraper device, the structure is more complex, and it is more troublesome to adjust. SUMMARY

[0003] Therefore, it is necessary to provide a scraper structure for 3D printer and 3D printer, which is convenient to adjust the levelness or height of the scraper.

[0004] The utility model provides a scraper structure for 3D printer, which comprises:

[0005] A base;

[0006] A scraper connected to the base by sliding;

[0007] A threaded adjusting member provided on the scraper, which is threadedly connected to the scraper, and the lower movable end of the threaded adjusting member abuts against and is supported by the base.

[0008] Further, a side plate is installed on the base, a strip-shaped hole is provided on the side plate, a locking member is threadedly connected to the base through the strip-shaped hole, and the side plate and the scraper are locked by rotating the locking member.

[0009] Further, a side plate is installed on the base, a locking member is threadedly connected to the side plate, and the locking member and the base are frictionally locked by rotating the locking member.

[0010] Further, a side plate is installed on the scraper, a strip-shaped hole is provided on the side plate, a locking member is threadedly connected to the base through the strip-shaped hole, and the side plate and the scraper are locked by rotating the locking member.

[0011] Further, a side plate is installed on the scraper, a locking member is threadedly connected to the side plate, and the locking member and the base are frictionally locked by rotating the locking member.

[0012] Further, the screw adjusting piece is a micrometer.

[0013] Further, the scraper structure further comprises a sliding block, the sliding block is provided with a positioning groove, the base comprises a mounting portion, and the side wall of the mounting portion is positioned in the positioning groove.

[0014] Further, the scraper structure further comprises a locking structure, the locking structure comprises a threaded rod and a nut, the nut is threadedly connected with the threaded rod, the threaded rod is rotationally connected with the sliding block, the mounting portion is provided with an avoiding groove, the avoiding groove is used for avoiding when the threaded rod rotates, and the nut is used for pressing the mounting portion to the positioning groove.

[0015] Further, the scraper structure further comprises a sliding block, a screw rod, a motor and a guide rail, the base is connected with the sliding block, the sliding block is threadedly connected with the screw rod, the sliding block is slidingly connected with the guide rail, and the motor is used for driving the screw rod to rotate.

[0016] The utility model provides a kind of 3D printer, the 3D printer includes trough and the scraper structure described, and the scraper is placed in the trough and its lower end is spaced from the bottom surface of the trough, and the scraper can move along the trough.

[0017] The utility model further provides a kind of 3D printer suitable for printing low flowability material, including trough, and the 3D printer further includes the scraper described, and the scraper is arranged in the trough and can move along the moving direction to make the side wall close to or away from the inner side wall of the trough, when the scraper is close to the inner side wall of the trough, the side wall and the inner side wall form the collection space of excess material between.

[0018] Further, the side wall is provided with a scraping piece, the scraping piece includes a curved portion gradually curved to the outside downward from the end portion, the inner side wall of the trough is provided with a guide inclined surface below, and the guide inclined surface is used to guide the curved portion to bend upward when the scraper is close to the inner side wall of the trough.

[0019] Further, the upper of the scraper is provided with an open mouth, and the 3D printer further includes a material supply mechanism, when the scraper is close to the inner side wall of the trough, the discharge port of the material supply mechanism is located above the open mouth and supplies material into the accommodating groove.

[0020] Compared with prior art, the utility model has the beneficial effects that: the scraper is supported on the base by the screw adjusting piece, when it is necessary to adjust the levelness or height of the scraper, the lower movable end of the screw adjusting piece is moved and the perpendicular distance with the scraper is changed by screwing the screw adjusting piece, so as to change the levelness or height of the scraper. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Figure 2 is a structural schematic view of the trough and the scraper structure of the utility model.

[0022] Figure 2 Figure 3 is an enlarged view of A of figure 2. Figure 1

[0023] Figure 3 Figure 4 is an enlarged view of B of figure 2. Figure 1

[0024] The following detailed description will further describe the utility model in combination with the above figures. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model. It can be understood that the drawings are only provided for reference and illustration, and are not used to limit the utility model. The connection relationship shown in the drawings is only for the convenience of clear description, and does not limit the connection mode.

[0026] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or a middle component can exist simultaneously. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the utility model belongs. It should also be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The terms used in the specification of the utility model in this paper are only for the purpose of describing the specific embodiments, and are not intended to limit the utility model.

[0027] ​​It should be noted that in the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] Referring to Figure 1 The utility model discloses a 3D printer, the 3D printer includes trough 10 and doctor blade structure 20. The trough 10 is used to hold resin. In combination Figure 2 As shown in the figure, the doctor blade structure 20 includes doctor blade 21, base 22, threaded adjusting part 23, the doctor blade 21 is connected base 22, threaded adjusting part 23 is threadedly connected doctor blade 21, doctor blade 21 is placed in the trough 10, and the lower end of doctor blade 21 is spaced apart from the bottom surface of the trough 10.

[0029] The doctor blade structure 20 can also include sliding block 24, screw rod 25, motor 26 and guide rail 27, the base 22 is connected with the sliding block 24, the sliding block 24 is threadedly connected with the screw rod 25, the sliding block 24 is slidingly connected with the guide rail 27, and the motor 26 is used to drive the screw rod 25 to rotate.

[0030] The motor 26 drives the screw rod 25 to rotate, thereby converting into the linear motion of the sliding block 24, and further driving the doctor blade 21 to move in the trough 10 to scrape the resin flat.

[0031] The doctor blade 21 includes two end portions, and the two end portions can be connected with a base 22 and a threaded adjusting part 23 respectively. The sliding block 24, the screw rod 25, the motor 26 and the guide rail 27 are symmetrically arranged on the two sides of the trough 10.

[0032] Taking one end as an example, referring to Figure 2 As shown in the figure, the end portion of the doctor blade 21 is slidingly connected with the base 22, and a guide rail structure 20a can be arranged on the doctor blade 21 and the base 22, and the doctor blade 21 can slide relative to the base 22 by means of the guide rail structure 20a.

[0033] The end of the scraper 21 comprises a mounting arm 211 in inverted L shape, the end of the mounting arm 211 is suspended above the base 22, the threaded adjusting member 23 is threadedly connected with the end of the mounting arm 211, the lower movable end 231 of the threaded adjusting member 23 abuts against and is supported by the base 22.

[0034] When the levelness or height of the scraper 21 is to be adjusted, the threaded adjusting member 23 is screwed, the lower movable end 231 of the threaded adjusting member 23 is moved and the vertical distance with the scraper 21 is changed, thereby changing the levelness or height of the scraper 21.

[0035] In the present embodiment, the threaded adjusting member 23 is a micrometer, the user can directly view the height of the scraper 21 being adjusted.

[0036] In the present embodiment, the base 22 is provided with a side plate 221, the side plate 221 is provided with a strip-shaped hole 222, a locking member 223 is threadedly connected with the scraper 21 through the strip-shaped hole 222, the side plate 221 and the scraper 21 are locked by screwing the locking member 223, when the height of the scraper 21 is to be adjusted, the locking member 223 is loosened first, then the threaded adjusting member 23 is screwed, the locking member 223 is moved in the strip-shaped hole 222, when the appropriate height is reached, the locking member 223 is screwed, the side plate 221 and the scraper 21 are locked, thereby making the base 22 and the scraper 21 relatively fixed.

[0037] In other embodiments, the base 22 can be provided with a side plate 221, a locking member 223 is threadedly connected with the side plate 221, the locking member 223 and the scraper 21 are frictionally locked by screwing the locking member 223.

[0038] In other embodiments, the scraper 21 can be provided with a side plate 221, the side plate 221 is provided with a strip-shaped hole 222, a locking member 223 is threadedly connected with the base 22 through the strip-shaped hole 222, the side plate 221 and the scraper 21 are locked by screwing the locking member 223.

[0039] In other embodiments, the scraper 21 can be provided with a side plate 221, a locking member 223 is threadedly connected with the side plate 221, the locking member 223 and the base 22 are frictionally locked by screwing the locking member 223.

[0040] More specifically, refer to Figure 3As shown, the slider 24 is provided with a positioning groove 241, and the base 22 comprises a mounting portion 22a, a side wall of the mounting portion 22a is positioned in the positioning groove 241 to limit the base 22 from sliding relative to the slider 24 in a horizontal position.

[0041] In order to fasten the base 22 on the slider 24, the scraper structure 20 further comprises a locking structure 28, the locking structure 28 comprises a threaded rod 281 and a nut 282, the nut 282 is threadedly connected with the threaded rod 281, the threaded rod 281 is rotationally connected with the slider 24, and the mounting portion 22a is provided with an avoiding groove 22b for avoiding the threaded rod 281 when rotating, and the nut 282 is used to press the mounting portion 22a against the positioning groove 241.

[0042] During installation, the threaded rod 281 is rotated to leave the mounting portion 22a in the position of the positioning groove 241, after the mounting portion 22a is placed, the threaded rod 281 is then rotated to enter the avoiding groove 22b, and then the nut 282 is screwed, the nut 282 will press the mounting portion 22a against the positioning groove 241, so as to fix the mounting portion 22a in each direction relative to the slider 24, when the base 22 needs to be disassembled, the nut 282 is loosened, then the threaded rod 281 is rotated to exit the avoiding groove 22b, and the base 22 is lifted to be removed from the slider 24, which is very convenient.

[0043] In the specification and claims of the present application, the words "comprise / contain" and the words "have / including" and their variants are used to specify the presence of the stated features, values, steps or components, but do not exclude the presence or addition of one or more other features, values, steps, components or combinations thereof.

[0044] Some features of the present application are described in different embodiments for the sake of clarity, however, these features can also be combined in a single embodiment. Conversely, some features of the present application are described in a single embodiment for the sake of brevity, however, these features can also be described in different embodiments alone or in any suitable combination.

[0045] The above is only the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A doctor blade structure for a 3D printer, characterized in that, The utility model provides a kind of 3D printer, including: Base; Scraper, the scraper is slidably connected with the base; Threaded adjusting piece, the threaded adjusting piece is arranged on the scraper, the threaded adjusting piece is threadedly connected with the scraper, and the lower movable end of the threaded adjusting piece abuts against the base and is supported by the base.

2. The doctor structure for a 3D printer according to claim 1, wherein, The base is provided with a side plate, and the side plate is provided with a strip-shaped hole.

3. The doctor structure for a 3D printer according to claim 1, wherein, The base is provided with a side plate, and the side plate is provided with a strip-shaped hole.

4. The doctor structure for a 3D printer according to claim 1, wherein, The scraper is provided with a side plate, and the side plate is provided with a strip-shaped hole.

5. The doctor structure for a 3D printer according to claim 1, wherein, The scraper is provided with a side plate, and the side plate is provided with a strip-shaped hole.

6. The doctor structure for a 3D printer according to claim 1, wherein, The threaded adjusting piece is a micrometer.

7. The doctor structure for a 3D printer according to claim 1, wherein The scraper structure further includes a sliding block, and the sliding block is provided with a positioning groove.

8. The doctor structure for a 3D printer according to claim 7, wherein, The scraper structure further includes a locking structure, and the locking structure includes a threaded rod and a nut.

9. The doctor structure for a 3D printer according to claim 1, wherein, The scraper structure further includes a sliding block, a screw rod, a motor and a guide rail.

10. A 3D printer characterized by, The 3D printer includes a trough and the scraper structure according to any one of claims 1-9, the scraper is placed in the trough and the lower end thereof is spaced from the bottom surface of the trough, and the scraper can move along the trough.

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