CN215283391U - 3D printer and automatic leveling detection head, detection device - Google Patents
3D printer and automatic leveling detection head, detection device Download PDFInfo
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- CN215283391U CN215283391U CN202023094663.4U CN202023094663U CN215283391U CN 215283391 U CN215283391 U CN 215283391U CN 202023094663 U CN202023094663 U CN 202023094663U CN 215283391 U CN215283391 U CN 215283391U
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Abstract
The utility model relates to a 3D printer and automatic leveling detection head and detection device, including drive unit, measuring device, the control unit and frame. The driving unit comprises an electromagnetic coil and an elastic component, and the elastic component is coaxial with the electromagnetic coil and is positioned in the electromagnetic coil; the measuring device comprises a connecting column and a detection probe, wherein the probe penetrates through the elastic component to be connected with the connecting column; the control unit comprises a controller, a detection unit and a flat cable interface, the detection unit is used for detecting the position of the connecting column and sending corresponding information to the controller, the flat cable interface is used for outputting electric energy to the driving unit, and the controller is electrically connected with the electromagnetic coil, the detection unit and the flat cable interface; the frame is used for fixed drive unit and control unit. The controller detection unit detects the position information of the connecting column and controls the voltage in the electromagnetic coil to make the electromagnetic coil and the elastic component drive the connecting column and the detection probe to move back and forth to obtain the position information of the detection point.
Description
Technical Field
The utility model relates to a 3D technical field especially relates to an automatic leveling sensor of 3D printer.
Background
The 3D printer is a machine for rapid prototyping, and utilizes a technique of constructing an object by using a bondable material such as a special wax material, powdered metal, or plastic, and printing layer by layer. The success or failure of the first layer of the 3D printer directly determines the success or failure of the whole printing, and the levelness of the printing platform directly determines the success or failure of the first layer, so that the maintenance of the levelness of the printing platform is important for the 3D printing work.
At present, the 3D printer mostly adopts distance sensor to measure the three not collinear points of print platform in proper order in order to judge print platform's levelness, and the external world carries out corresponding adjustment according to the measuring result. However, the conventional distance sensor has poor stability, is easily interfered by an external environment, and has poor precision.
Disclosure of Invention
Accordingly, it is necessary to provide a 3D printer, an automatic leveling detection head, and a detection device, which are directed to the problems of poor stability and low accuracy of an automatic leveling detection device of a 3D printer.
An auto-leveling detection head of a 3D printer, comprising:
the driving unit comprises an electromagnetic coil and an elastic component, and the elastic component is coaxial with the electromagnetic coil and is positioned in the electromagnetic coil;
the measuring device comprises a connecting column and a detection probe, and the detection probe penetrates through the elastic component to be connected with the connecting column;
the control unit comprises a controller, a detection unit and a flat cable interface, wherein the detection unit is used for detecting the position of a connecting column and sending corresponding information to the controller, the flat cable interface is used for outputting electric energy to the driving unit, and the controller is electrically connected with the electromagnetic coil, the detection unit and the flat cable interface; and
and the frame is used for fixing the driving unit and the control unit.
Above-mentioned an automatic leveling detects head for 3D printer, the positional information of detecting element detection spliced pole and give the controller, the controller is according to the positional information of the spliced pole of receiving in order to control solenoid, drive spliced pole and detection probe round trip movement through solenoid and elastic component detect, wherein, the controller is high to solenoid controllable degree, guarantees the measurement accuracy of automatic leveling detects head.
In one embodiment, a shielding cover is arranged outside the electromagnetic coil and wraps the electromagnetic coil to isolate the electromagnetic coil.
In one embodiment, the outer wall of the fixing piece is provided with a charging post, and the controller is electrically connected with the electromagnetic coil through the charging post.
In one embodiment, a fixing member is arranged in the electromagnetic coil, and the electromagnetic coil is wound on the fixing member.
In one embodiment, the frame comprises a front frame and a rear frame, and the front frame is detachably connected with the rear frame.
In one embodiment, the frame is provided with positioning bosses distributed around the electromagnetic coil to clamp the electromagnetic coil.
In one embodiment, the detecting unit is a light sensor, and the connecting column shields the light sensor to trigger the light sensor.
In one embodiment, the connecting column is axially surrounded by the detection unit, the detection probe axially penetrates through the driving unit and moves relative to the driving unit, and the connecting column is coaxially connected with the detection probe.
The utility model provides an automatic leveling detection device of 3D printer, includes elevating system and the aforesaid automatic leveling detect the head, elevating system connects in the frame upper end, elevating system with the controller electricity is connected and removes according to the signal of controller transmission the automatic leveling detects the head.
The automatic leveling detection device of the 3D printer is connected with the automatic leveling detection head through the lifting mechanism and lifts the automatic leveling detection head according to signals transmitted by the controller so as to complete detection of position information of different detection points.
The utility model provides a 3D printer, includes print platform, treater, levelling device and the aforesaid auto leveling detection device, auto leveling detection device is used for detecting print platform different positions and transmits detection information in the treater, and the treater is according to the detection information control levelling device adjustment print platform who receives.
According to the 3D printer, the automatic leveling detection device is used for detecting different positions of the printing platform and conveying detection information to the processor, and the processor controls the leveling device to adjust the inclination angle of the printing platform according to the received information so that the printing platform is in a horizontal state, so that the printing quality of the 3D printer is ensured.
Drawings
Fig. 1 is an exploded view of an automatic leveling detection device of a 3D printer;
FIG. 2 is a cross-sectional view of a first state of an automatic leveling detection device of the 3D printer;
fig. 3 is a sectional view of the automatic leveling detection device of the 3D printer in a second state.
Icon:
100-a drive unit; 110-a resilient component; 120-a fixture; 130-an electromagnetic coil; 140-a shield; 150-charging column;
200-a measuring device; 210-connecting column; 211-a first connection end; 220-detection probes; 221-a second connection end;
300-a control unit; 310-a controller; 320-a detection unit; 330-bus cable interface;
400-a rack; 410-a front frame; 420-a rear rack; 430-positioning bosses; 440-a connector; 441-a fastener; 442-a positioning element; 450-lug.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1 and 2, an embodiment of the present invention provides an auto leveling detection head for a 3D printer, including a driving unit 100, a measuring device 200, a control unit 300, and a frame 400. The frame 400 is used for fixing the measuring device 200 and the control unit 300, and the control unit 300 is used for detecting the position of the measuring device 200 and controlling the drive unit 300 to drive the measuring device 200 for detection. The automatic leveling detection head of the 3D printer detects the position of the measuring device 200 through the control unit 300 to control the driving unit 100 to work, so as to drive the measuring device 200 to perform detection to realize detection of the automatic leveling device.
Specifically, the driving unit 100 includes an electromagnetic coil 130 and a resilient member 110, wherein the resilient member 110 is located inside the electromagnetic coil 130 and moves relative to the electromagnetic coil 130 along an axial direction of the electromagnetic coil 130. To ensure stability of movement of elastomeric assembly 110 relative to solenoid coil 130, elastomeric assembly 110 is coaxially disposed within solenoid coil 130. To prevent circumferential wobble of elastomeric assembly 110 relative to solenoid coil 130, the diameter of elastomeric assembly 110 is slightly smaller than the diameter of solenoid coil 130, preferably the gap between elastomeric assembly 110 and solenoid coil 130 is between 0-10 mm.
Specifically, the measuring device 200 includes a connecting column 210 and a detecting probe 220, wherein the detecting probe 220 is inserted into the elastic component 110 and connected to the lower end of the connecting column 210. That is, one end of the detecting probe 220 is connected to the connecting column 210, and the other end moves relative to the elastic member 110. The control unit 300 includes a controller 310, a detection unit 320 and a flat cable interface 330, the detection unit 320 detects the position information of the connection column 210 and transmits corresponding detection information to the controller 310, the flat cable interface 330 outputs electric energy to the driving unit 100, and the controller 310 is electrically connected to the electromagnetic coil 130, the detection unit 320 and the flat cable interface 330. The detecting unit 320 detects the specific position of the connecting column 210 and transmits the detected position to the controller 310 in an electrical signal, and the controller 310 controls the voltage or current applied to the electromagnetic coil 130 by the flat cable interface 330 according to the detected information received from the detecting unit 320. The magnetic attraction of the electromagnetic coil 130 to the detection probe 220 varies with the change of the internal voltage or current, so as to drive the detection probe 220 to move relative to the electromagnetic coil 130, and the connecting column 210 moves up and down synchronously with the detection probe 220. The driving unit 100 and the control unit 300 are fixed in the frame 400.
In one embodiment, as shown in fig. 1, in order to prevent the external environment from interfering with the electromagnetic coil 130 and interfering with the magnetic field inside the electromagnetic coil 130, which may affect the detection accuracy of the auto-leveling detection head, a shielding cover 140 is disposed outside the electromagnetic coil 130. The shielding cover 140 covers the electromagnetic coil 130 to isolate the electromagnetic coil 130 from the external environment, and the shielding cover 140 may be made of aluminum or copper. Further, in order to ensure the stability of fixing the electromagnetic coil 130 to the chassis 400, the shielding case 140 wraps the electromagnetic coil 130 and is clamped outside the electromagnetic coil 130. The frame 400 fixes the electromagnetic coil 130 through the fixed shielding cover 140, and meanwhile, the shielding cover 140 can prevent the electromagnetic coil 130 from rubbing against the frame 400 to influence the conductivity of the electromagnetic coil 130, so that the normal operation of the electromagnetic coil 130 is ensured.
Further, in order to reduce the difficulty of connecting the electromagnetic coil 130 with the controller 310, the shielding case 140 is provided with a charging post 150, and the controller 310 is electrically connected with the electromagnetic coil 130 through the charging post 150. To simultaneously secure the rack 400 to the shield 140, the charging post 150 is preferably located at the upper end of the shield 140 as shown in fig. 1. Because the electromagnetic coil 130 has a current input end and an output end, in order to simplify the circuit arrangement of the electromagnetic coil 130 and the controller 310, two charging posts 150 are arranged side by side on the upper end of the shielding case 140, and the two charging posts 150 correspond to the current input end and the output end respectively. Accordingly, both terminals of solenoid coil 130 are located at the upper end of solenoid coil 130 to connect charging post 150. Further, in order to improve the stability of the connection between the electromagnetic coil 130 and the controller 310, the charging post 150 is provided with a wiring hole, and two terminals of the electromagnetic coil 130 pass through the wiring hole to be connected with the controller 310.
In one embodiment, in order to prevent the elastic component 110 from rubbing against the electromagnetic coil 130 when moving relative to the electromagnetic coil 130 and affecting the normal use of the electromagnetic coil 130, the fixing component 120 is disposed in the electromagnetic coil 130, and the through hole is disposed in the fixing component 120. To secure the stability of the electromagnetic coil 130, the electromagnetic coil 130 is wound and fixed on the fixing member 120. Accordingly, to avoid leakage of electricity when electromagnetic coil 130 is worn, fixing member 120 is preferably made of an insulating material, or elastic member 110 is preferably made of an insulating material. Specifically, in order to improve the stability of the movement of the elastic element 110 relative to the fixing element 120, the elastic element 110 and the fixing element 120 are coaxially disposed inside the through hole. Preferably, the diameter of the elastic component 110 is slightly smaller than that of the through hole of the fixing member, and the clearance between the elastic component 110 and the wall of the hole of the fixing member is preferably between 0 and 10 mm.
In one embodiment, to quickly mount and dismount the auto-leveling detection head of the 3D printer, the frame 400 includes a front frame 410 and a rear frame 420, and the front frame 410 is detachably connected to the rear frame 420. The front frame 410 is connected to the rear frame 420 through a connector 440, the connector 440 may be a bolt, a screw, a buckle, etc., and the front frame 410 and the rear frame 420 are preferably connected in a snap-fit manner for quick detachment of the front frame 410 and the rear frame 420. As shown in fig. 1 and 2, the front frame 410 is provided with a fastening member 441, the rear frame 420 is provided with a positioning member 442 matching with the fastening member 441, and the fastening member 441 clasps the positioning member 442 to connect the front frame 410 and the rear frame 420 together.
Further, in order to improve the stability of the rack 400 for fixing the driving unit 100, the rack 400 is provided with a positioning boss 430, and the positioning boss 430 is clamped on the outer side of the electromagnetic coil 130 so as to hold the electromagnetic coil 130 tightly in the rack 400. Preferably, the positioning bosses 430 are distributed around the electromagnetic coil 130, and when the electromagnetic coil 130 is fixed in the frame 400, the positioning bosses 430 circumferentially hold the electromagnetic coil 130, so as to fix the electromagnetic coil 130 in the frame 400. Further, in order to prevent the positioning bosses 430 of the front frame 410 and the rear frame 420 from being dislocated to cause the axial offset of the electromagnetic coil 130 relative to the frame 400, it is preferable that at least two sets of positioning bosses 430 are distributed outside the electromagnetic coil 130 along the axial direction of the electromagnetic coil 130.
In order to improve the detection accuracy of the auto-leveling detection head of the 3D printer, the detection unit 320 needs to accurately detect the position of the connection column 210. In view of the above problem, the detecting unit 320 is preferably a photo sensor, the connecting column 210 is located in a detecting area of the photo sensor, and when the connecting column 210 blocks the photo sensor, the photo sensor is triggered to send a start/stop signal to the controller 310.
Further, in order to prevent the light sensor from contacting the connection post 210 to affect the detection precision of the auto leveling detection head, the light sensor is a groove-shaped photoelectric sensor. The groove-shaped photoelectric sensor is provided with an avoiding groove, and the connecting column 210 penetrates through the avoiding groove to move relative to the photoelectric sensor. To ensure the coaxiality of the movement of the connection column 210 with respect to the solenoid 120, the groove type photo sensor is preferably a 'U' type sensor having an opening at one side.
In order to avoid the abrasion of the detection probe in the using process and influence the detection precision of the automatic leveling detection head of the 3D printer, the detection probe 220 is detachably connected to the connecting column 210. Preferably, as shown in fig. 1, the upper end of the detection probe 220 is provided with a second connection end 221, the lower end of the connection column 210 is provided with a second connection end 211, the first connection end 211 is detachably connected to the second connection end 221, preferably, the second connection end 221 is provided with a thread, the first connection end 211 is provided with a threaded hole matched with the second connection end 221, and the first connection end 211 is connected to the second connection end 221 through the thread. When the detection probe 220 is worn, the detection probe 220 is screwed to remove the detection probe 220 from the automatic leveling detection head, and a new detection probe 220 is installed on the connecting column 210, so that the detection precision of the automatic leveling detection head is prevented from being influenced by the wear of the detection probe 220.
In one embodiment, solenoid 130 is always energized when sensing probe 220 moves up and down relative to the solenoid, and controller 310 switches the voltage of solenoid 130 between high and low levels based on the feedback from sensing unit 320. Specifically, when the auto-leveling detection head detects, the controller 310 makes the electromagnetic coil 130 at a high level, and applies a large downward magnetic attraction force to the detection probe 220 through the electromagnetic coil 130, so that the detection probe 220 overcomes the resistance of the elastic component 110 and moves downward relative to the electromagnetic coil 130 under the action of the magnetic attraction force to extend out of the rack 400. After the sensing probe 220 is fully extended out of the housing 400, the controller 310 puts the solenoid coil 130 in a low state to maintain the state where the solenoid coil 130 is fully extended out of the housing 400. By placing solenoid 130 in a high state to drive test probe 220 to extend out of housing 400 quickly, testing efficiency is improved. By keeping the solenoid 130 in the low state to keep the detection probe 220 in the extended state, it is possible to prevent the detection point from being damaged by applying an excessive downward force to the detection probe 220.
Further, since the auto-leveling detection head of the 3D printer needs to detect the position information of different detection points in a leveling detection process, in order to ensure that the detection accuracy detection probe 220 needs to return to the initial position to perform the detection operation of the next detection point, the controller 310 cuts off the voltage or current of the electromagnetic coil 130 after the detection probe 220 completes the detection operation of one detection point. After the controller 310 cuts off the voltage or current in the electromagnetic coil 130, the elastic component 110 drives the connecting column 210 to move upward to return to the initial position, and the detection probe 220 moves upward to the initial position along with the connecting column 210, so as to facilitate the detection operation of the next detection point.
The detection efficiency is affected by the delayed return of the detection probe 220 due to the residual magnetic field inside the electromagnetic coil 130 after the power is cut off. In view of the above problem, after the detection probe 220 completes the detection operation of one detection point, the controller 210 applies a reverse current or voltage to the electromagnetic coil 130. When the electromagnetic coil 130 is applied with a reverse voltage or current, on one hand, an upward acting force is generated on the detection probe 220 to quickly return the detection probe 220, and on the other hand, the electromagnetic coil 130 generates a reverse magnetic field to eliminate the interference of the residual magnetic field on the detection probe 220, thereby improving the detection efficiency and the detection precision.
When assembling the 3D printer auto leveling detection head, the driving unit 100 is first assembled, that is, the electromagnetic coil 130 is wound on the fixing member 120, the electromagnetic coil 130 is wrapped by the shielding cover 140, two connection ends of the electromagnetic coil 130 extend out of the charging post 150 or are welded to the charging post 150, and the elastic component 110 is placed in the fixing member 120. Then, the driving unit 100 and the control device 300 are fixed on the frame 400, that is, the driving unit 100 is placed on the side of the positioning boss 430, and is connected to the controller 310 and the charging post 150. Then, the measuring device 200 is assembled, the upper end of the connecting column 210 is inserted into the groove-shaped photoelectric sensor, and the detection probe 220 passes through the elastic component 110 and is connected to the lower end of the connecting column 210. Finally, the rear chassis 420 is closed over the front chassis 410, and the driving unit 100 is clamped by the positioning bosses 430.
The utility model discloses a 3D printer automatic leveling detection device in embodiment, including elevating system and above-mentioned automatic leveling detection head, elevating system is used for driving automatic leveling detection head and reciprocates. Specifically, as shown in fig. 3, a lug 450 is disposed at the upper end of the frame 400, the auto leveling detection head is fixedly connected to the lifting mechanism through the lug 450, and meanwhile, the lifting mechanism is electrically connected to the controller 310 and moves up and down according to a signal transmitted by the controller 310, so as to drive the auto leveling detection head to move up and down.
When the 3D printer automatic leveling detection device performs leveling detection, the controller 310 firstly applies high voltage or current to the electromagnetic coil 130, and the detection probe 220 moves downward against the pushing force of the elastic component 110 under the action of the magnetic attraction force of the electromagnetic coil 130. After the probe 220 to be detected completely extends out of the frame 400, the photoelectric sensor sends a trigger signal to the controller 310, and the controller 310 supplies a low current to the electromagnetic coil 130 and transmits a descending message to the lifting mechanism. The lifting mechanism drives the automatic leveling detection head to move downwards, the detection probe 220 moves upwards after abutting against a detection point, and the controller 310 controls the lifting mechanism to stop moving downwards when the connecting column 210 moves upwards to block the photoelectric sensor along with the detection probe 220. The height information of the detection point is obtained by reading the lifting height of the lifting mechanism, after the detection work of the detection point is completed, the controller 310 cuts off the voltage or current of the electromagnetic coil 130 to return the detection probe 220 to the initial position, and simultaneously controls the lifting mechanism to ascend, thereby completing the detection of one point detection point.
The utility model discloses a 3D printer in embodiment, including print platform, treater, levelling device and automatic leveling detection device, wherein, automatic leveling detection device is used for detecting print platform different positions and transmits detection information and gives the treater, and the treater is according to the detection information control automatic leveling device adjustment print platform who receives. Specifically, the processor calculates the height information of the printing platform at different positions according to the height information detected by the automatic leveling detection device, and determines the inclination angle of the printing platform relative to the printing head and the corresponding compensation height. The leveling device is positioned below the printing platform and adjusts the inclination angle of the printing platform according to the compensation height information of the processor, so that the printing platform is in a parallel state relative to the printing head.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a 3D printer's auto leveling detects head which characterized in that includes:
the driving unit comprises an electromagnetic coil and an elastic component, and the elastic component is coaxial with the electromagnetic coil and is positioned in the electromagnetic coil;
the measuring device comprises a connecting column and a detection probe, and the detection probe penetrates through the elastic component to be connected with the connecting column;
the control unit comprises a controller, a detection unit and a flat cable interface, wherein the detection unit is used for detecting the position of a connecting column and sending corresponding information to the controller, the flat cable interface is used for outputting electric energy to the driving unit, and the controller is electrically connected with the electromagnetic coil, the detection unit and the flat cable interface; and
and the frame is used for fixing the driving unit and the control unit.
2. The auto-leveling detection head of a 3D printer according to claim 1, wherein a shield is provided outside the electromagnetic coil, the shield wrapping the electromagnetic coil to isolate the electromagnetic coil.
3. The auto-leveling detection head of a 3D printer according to claim 2, wherein a charging post is provided on an outer wall of the shielding case, and the controller is electrically connected to the electromagnetic coil through the charging post.
4. The auto-leveling detection head of a 3D printer according to claim 1, wherein a fixing member is provided in the electromagnetic coil, and the electromagnetic coil is wound around the fixing member.
5. The auto-leveling detection head of the 3D printer according to claim 1, wherein the frame comprises a front frame and a rear frame, the front frame being detachably connected to the rear frame.
6. The automatic leveling detection head of the 3D printer according to claim 5, wherein the frame is provided with positioning bosses distributed around the electromagnetic coil to clamp the electromagnetic coil.
7. The auto-leveling detection head of a 3D printer according to claim 1, wherein the detection unit is a light sensor, and the connection column shields the light sensor to trigger the light sensor.
8. The auto leveling detection head of the 3D printer according to any one of claims 1 to 7, wherein the connection column is axially surrounded by the detection unit, the detection probe axially penetrates through the driving unit and moves relative to the driving unit, and wherein the connection column is coaxially connected with the detection probe.
9. An automatic leveling detection device of a 3D printer is characterized by comprising a lifting mechanism and the automatic leveling detection head according to any one of claims 1 to 8, wherein the lifting mechanism is connected to the upper end of a rack, and the lifting mechanism is electrically connected with a controller and moves the automatic leveling detection head according to signals transmitted by the controller.
10. A3D printer, characterized by, including print platform, treater, levelling device and claim 9 the automatic leveling detection device of 3D printer, automatic leveling detection device is used for detecting print platform different positions and transmits the detection information in the treater, and the treater is according to the detection information control levelling device adjustment print platform that receives.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559663A (en) * | 2022-01-27 | 2022-05-31 | 深圳市纵维立方科技有限公司 | Leveling device and 3D printer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559663A (en) * | 2022-01-27 | 2022-05-31 | 深圳市纵维立方科技有限公司 | Leveling device and 3D printer |
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