CN214111489U - 3D printer with automatic leveling device - Google Patents
3D printer with automatic leveling device Download PDFInfo
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- CN214111489U CN214111489U CN202022471697.4U CN202022471697U CN214111489U CN 214111489 U CN214111489 U CN 214111489U CN 202022471697 U CN202022471697 U CN 202022471697U CN 214111489 U CN214111489 U CN 214111489U
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- leveling device
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Abstract
The utility model discloses a 3D printer with automatic leveling device, include: the device comprises a printer base, a forming platform, a lifting assembly, a spray head assembly and a spray head assembly guide rod; the printer base comprises at least one horizontally arranged base plate, the forming platform is arranged on the base plate, the lifting assembly is arranged on the base plate and connected with the spray head assembly guide rod, and the spray head assembly guide rod drives the spray head assembly to move up and down through a fixing plate; the one end of fixed plate is provided with a shower nozzle mounting panel, the shower nozzle mounting panel include the vertical mounting panel of a vertical setting and the level set up in shell fragment on the vertical mounting panel, be provided with earlier on the fixed plate contact conducting strip that the shell fragment extends, the shell fragment with contact conducting strip passes through a regulating part elastic contact, the shower nozzle subassembly set up in on the shell fragment just the shower nozzle of shower nozzle subassembly is towards the shaping platform. The utility model discloses can improve the auto leveling precision.
Description
Technical Field
The utility model relates to a 3D printer technical field, concretely relates to 3D printer with automatic leveling device.
Background
The 3D printing, i.e. rapid prototyping, is an additive manufacturing technique, also known as additive manufacturing, which is a technique for manufacturing a three-dimensional entity by printing layers of adhesive material on the basis of a digital model file using special adhesive materials such as wax, powdered metal or plastic. Fused deposition rapid prototyping (FDM), also known as hot melt deposition (hot melt deposition) technology, is one of the major 3D printing technologies. The technology comprises the steps of heating and melting hot-melt material wires, extruding the melted material wires from a spray head, depositing the material wires on a printing working platform or a previous layer of solidified material, starting solidification and forming when the temperature is lower than the solidification temperature of the material wires, and finally printing the material wires into an entity.
For 3D printing processes with fused deposition rapid prototyping (FDM) characterized by layer-by-layer accumulation, the levelness of the modeling platform directly determines the success or failure of the first layer of the model, and thus the failure and accuracy of the model printing. The leveling technology of the traditional 3D printer mainly realizes the adjustment of the levelness of the forming platform by manually adjusting screws under the forming platform, and the mode is not easy to operate and has insufficient precision. The automatic leveling device in the current market is mainly an electromagnetic leveling device, and has certain defects, such as poor anti-interference capability, high production and manufacturing cost, high assembly or maintenance difficulty and the like.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a 3D printer with automatic leveling device aims at improving 3D printer automatic leveling's precision.
The embodiment of the utility model provides a 3D printer with automatic leveling device, include: the device comprises a printer base, a forming platform, a lifting assembly, a spray head assembly and a spray head assembly guide rod; the printer base comprises at least one horizontally arranged base plate, the forming platform is arranged on the base plate, the lifting assembly is arranged on the base plate and connected with the spray head assembly guide rod, and the spray head assembly guide rod drives the spray head assembly to move up and down through a fixing plate;
the one end of fixed plate is provided with a shower nozzle mounting panel, the shower nozzle mounting panel include the vertical mounting panel of a vertical setting and the level set up in shell fragment on the vertical mounting panel, be provided with earlier on the fixed plate contact conducting strip that the shell fragment extends, the shell fragment with contact conducting strip passes through a regulating part elastic contact, the shower nozzle subassembly set up in on the shell fragment just the shower nozzle of shower nozzle subassembly is towards the shaping platform.
Furthermore, the lower end of the vertical mounting plate is provided with a limiting part arranged below the elastic sheet.
Furthermore, the contact conducting strip comprises a vertical conducting strip and a horizontal conducting strip connected with the vertical conducting strip, the vertical conducting strip is fixedly arranged on the back of the fixing plate, and the horizontal conducting strip is arranged below the elastic sheet.
Furthermore, the lower surface of the elastic sheet is provided with an elastic sheet contact, the upper surface of the horizontal conducting sheet is provided with a conducting sheet contact, and the elastic sheet contact is vertically aligned with the conducting sheet contact.
Furthermore, a horizontal extension portion is arranged forwards at the upper end of the vertical mounting plate, the adjusting piece is arranged on the horizontal extension portion and comprises an adjusting bolt and a spring, the adjusting bolt penetrates through the horizontal extension portion, a step portion is arranged at the head of the adjusting bolt, one end of the spring abuts against the step portion, and the other end of the spring abuts against the upper surface of the elastic piece.
Further, the bottom of vertical mounting panel is provided with a first insulating piece, the fixed plate with be provided with a second insulating piece between the vertical mounting panel.
Furthermore, the printer base further comprises a supporting plate perpendicular to the base plate, and the spray head assembly guide rod is fixedly installed on the supporting plate through an installation mechanism.
Further, shower nozzle subassembly guide bar is provided with 2, installation mechanism includes 4 installation positions, two liang of installation positions of 4 install in the four corners of backup pad constitutes two sets of installation positions of vertical direction, install one respectively between two sets of installation positions shower nozzle subassembly guide bar.
Furthermore, the lifting assembly comprises two guide plates which are sleeved between the two guide rods of the spray head assembly and can move up and down on the two guide rods of the spray head assembly, an extension plate is arranged in the middle of each guide plate, and the fixing plate is fixedly installed on the extension plate.
Furthermore, the lifting assembly further comprises a driving mechanism arranged on the base plate, and the driving mechanism is connected with the guide plate through a screw rod.
The embodiment of the utility model provides a 3D printer with automatic leveling device, include: the device comprises a printer base, a forming platform, a lifting assembly, a spray head assembly and a spray head assembly guide rod; the printer base comprises at least one horizontally arranged base plate, the forming platform is arranged on the base plate, the lifting assembly is arranged on the base plate and is parallel to the spray head assembly guide rod, and the spray head assembly guide rod drives the spray head assembly to move up and down through a fixing plate; the one end of fixed plate is provided with a shower nozzle mounting panel, the shower nozzle mounting panel include the vertical mounting panel of a vertical setting and the level set up in shell fragment on the vertical mounting panel, be provided with earlier on the fixed plate contact conducting strip that the shell fragment extends, the shell fragment with contact conducting strip passes through a regulating part elastic contact, the shower nozzle subassembly set up in on the shell fragment just the shower nozzle of shower nozzle subassembly is towards the shaping platform. The embodiment of the utility model provides a drive the shower nozzle subassembly through lifting unit and touch the motion to the shaping platform to obtain the high position data of shower nozzle subassembly for each contact point of shaping platform, and carry out the auto leveling compensation according to high position data, and then improve the auto leveling precision of 3D printer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a schematic structural diagram of a 3D printer with an automatic leveling device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a nozzle assembly of a 3D printer having an automatic leveling device according to an embodiment of the present invention;
fig. 3 is an exploded schematic view of a nozzle assembly of a 3D printer with an automatic leveling device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a state of a nozzle assembly of a 3D printer having an automatic leveling device according to an embodiment of the present invention;
fig. 5 is another schematic state diagram of a nozzle assembly of a 3D printer having an automatic leveling device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Referring to fig. 1 and fig. 2, an embodiment of the present invention provides a 3D printer with an automatic leveling device, including: the device comprises a printer base 1, a forming platform 2, a lifting assembly 3, a spray head assembly 4 and a spray head assembly guide rod 51; the printer base 1 comprises at least one horizontally arranged base plate 11, the forming platform 2 is arranged on the base plate 11, the lifting assembly 3 is arranged on the base plate 11 and connected with the spray head assembly guide rod 51, and the spray head assembly guide rod 51 drives the spray head assembly 4 to move up and down through a fixing plate 41;
referring to fig. 3, a nozzle mounting plate 42 is disposed at one end of the fixing plate 41, the nozzle mounting plate 42 includes a vertically disposed vertical mounting plate 421 and a spring plate 422 horizontally disposed on the vertical mounting plate 421, a contact conductive sheet 411 extending toward the spring plate 422 is disposed on the fixing plate 41, the spring plate 422 and the contact conductive sheet 411 are in elastic contact with each other through an adjusting member 43, and the nozzle assembly 4 is disposed on the spring plate 422 and the nozzle 46 of the nozzle assembly 4 faces the forming platform 2.
In this embodiment, when the 3D printer is in an initial state (i.e., the leveling operation is not started), the adjusting member 43 presses the elastic conductive sheet 422, so that the elastic conductive sheet 422 and the contact conductive sheet 411 elastically contact to form a closed circuit. When the 3D printer starts to work (i.e., leveling operation is started), the lifting assembly 3 drives the nozzle assembly guide rod 51 connected with the lifting assembly 3, so as to drive the nozzle assembly 4 to move towards the forming platform 2, when the nozzle 46 at the lower end of the nozzle assembly 4 is pressed on the forming platform 2, the nozzle assembly 4 is subjected to reverse thrust, i.e., vertical upward thrust, and the nozzle assembly 4 pushes the elastic piece 422 to move upwards under the action of the thrust to generate a certain displacement, so that the elastic piece 422 and the contact conductive piece 411 can be separated and do not contact with each other, and then a circuit between the elastic piece 422 and the contact conductive piece 411 is opened (i.e., disconnected), a switching signal is generated, and then current height data of the nozzle assembly 4 can be recorded according to the switching signal. In a similar way, the lifting assembly 3 is utilized to drive the spray head assembly 4 to perform touch pressing actions at different positions of the forming platform 2, so that the height data of each touch point position of the switching signal generated by touch pressing each time is obtained. Finally, through the height data comparison of different position locations, lifting unit 3 is automatic right shower nozzle subassembly 4 is in the height data of 2 different positions of shaping platform compensate, make shower nozzle subassembly 4 for the whole planar height of shaping platform 2 equals, realizes 3D printer auto leveling's purpose.
In this example, a pressure sensor or a displacement sensor is not needed, the displacement is generated only by the stress deformation of the elastic sheet 422, an initial circuit generates a switching signal, and then the switching signal is used for determining the relative height data between the nozzle assembly 4 and each point position of the forming platform 2, so that the functions of data calculation, compensation and automatic leveling are realized, the final leveling basis is more accurate and reliable, and the leveling precision is improved.
In a specific embodiment, in order to improve the sensitivity between the elastic piece 422 and the contact conductive sheet 411, the position of the nozzle assembly 4 on the elastic piece 422 and the position of the contact conductive sheet 411 are installed according to a certain proportional relationship, for example, according to a ratio of 1:2, so that when the nozzle assembly 4 is lifted for a slight displacement, the displacement generated by the elastic piece 422 is amplified, thereby improving the sensitivity of the switching signal generated when the elastic piece 422 is separated from the contact conductive sheet 411. In another embodiment, when the nozzle assembly 4 is forced to be raised by 0.1mm, the displacement generated by the resilient piece 422 is 0.2 mm. In a specific application scenario, the elastic sheet is a sheet metal plate.
In one embodiment, the lower end of the vertical mounting plate 421 is provided with a stopper 44 disposed below the spring piece 422.
In this embodiment, the limiting member 44 is disposed at the lower end of the vertical mounting plate 421, and the limiting member 44 is located below the elastic piece 422. Meanwhile, the height of the limiting member 44 is set to be consistent with the height of the contact conductive sheet 411, that is, the distance between the limiting member 44 and the elastic sheet 422 is equal to the distance between the contact conductive sheet 411 and the elastic sheet 422, which has the advantages that: when the elastic piece 422 is pressed by the adjusting member 43, the compression is stopped when the elastic piece 422 contacts the limiting member 44, and at this time, it is determined that the elastic piece 422 has contacted the contact conductive sheet 411. Further, the height of the limiting member is set to be slightly lower than the height of the contact conducting strip 411, for example, lower than 4110.2mm, so that the situation that poor contact between the elastic piece 422 and the contact conducting strip 411 does not occur can be ensured. In a specific application scenario, the limiting member 44 is a limiting bolt, and meanwhile, the limiting bolt passes through the rear end of the vertical mounting plate 421 and is located below the elastic piece 422.
It should be noted that the height of the limiting member 44 is slightly lower than the height of the contact conductive sheet 411, which means that the contact between the elastic piece 422 and the contact conductive sheet 411 is within an effective range, that is, if the height of the limiting member 44 is relatively low, when the adjusting member 43 stops compressing the elastic piece 422, the elastic piece 422 and the contact conductive sheet 411 are in tight contact, thereby affecting the operation of separating the subsequent elastic piece 422 from the contact conductive sheet 411.
In an embodiment, the contact conducting strip 411 includes a vertical conducting strip 4111 and a horizontal conducting strip 4112 connected to the vertical conducting strip 4111, the vertical conducting strip 4111 is fixedly mounted on the back of the fixing plate 41, and the horizontal conducting strip 4112 is disposed below the elastic strip 422.
In this embodiment, the contact conducting strip 411 is installed on the back surface of the fixing plate 41 through the vertical conducting strip 4111, the lower end of the vertical conducting strip 4111 is fixedly connected with one end of the horizontal conducting strip 4112, and the other end of the horizontal conducting strip 4112 faces the elastic strip 422. In a specific application scenario, the vertical conductive plate 4111 and the horizontal conductive plate 4112 are integrally disposed.
Referring to fig. 4 and 5, in an embodiment, a spring plate contact 4221 is disposed on a lower surface of the spring plate 422, a conductive plate contact 41121 is disposed on an upper surface of the horizontal conductive plate 4112, and the spring plate contact 4221 is vertically aligned with the conductive plate contact 41121.
In this embodiment, the elastic piece 422 and the contact conductive piece 411 contact each other through the elastic piece contact 4221 and the conductive piece contact 41121, so as to form a closed loop. When the elastic sheet contact 4221 and the conductive sheet contact 41121 are separated, that is, when the elastic sheet 422 is ejected upward by the nozzle assembly 4, a closed loop between the elastic sheet 422 and the conductive sheet 411 is opened to form an open circuit, so as to generate a switching signal, and according to the switching signal, current height data of the nozzle assembly 4 relative to the forming platform 3 can be correspondingly recorded.
In an embodiment, a horizontal extension portion 4211 is disposed forward at an upper end of the vertical mounting plate 421, the adjusting member 43 is disposed on the horizontal extension portion 4211, the adjusting member 43 includes an adjusting bolt 431 penetrating through the horizontal extension portion 4211 and a spring 432, a head of the adjusting bolt 432 is provided with a step portion, one end of the spring 432 abuts against the step portion, and the other end abuts against an upper surface of the elastic piece 422.
In this embodiment, the adjusting member 43 includes an adjusting bolt 431 and a spring 432, the adjusting bolt 432 passes through a horizontal extension portion 4211 provided at an upper end of the vertical mounting plate 421, and the spring 432 provided at a head of the adjusting bolt 431 compresses the resilient piece 422. Specifically, the head of the adjusting bolt 431 is provided with a step-like portion (i.e., the step portion), one end of the spring 432 abuts against the step portion, the other end of the spring 432 abuts against the spring piece 422, the adjusting bolt 431 is controlled to rotate towards the spring piece 422, the spring 432 is compressed while the adjusting bolt 432 rotates, and therefore the effect of pressing the spring piece 422 downwards is achieved.
In one embodiment, a first insulation sheet 451 is disposed at the bottom of the vertical mounting plate 421, and a second insulation sheet 452 is disposed between the fixing plate 41 and the vertical mounting plate 421.
In this embodiment, the first insulating sheet 451 is disposed at the bottom of the vertical mounting plate 421, and the second insulating sheet 452 is disposed between the fixing plate 41 and the vertical mounting plate 421, so that it can be ensured that an electric field generated by a closed circuit formed between the elastic sheet 422 and the contact conductive sheet 411 does not affect the movement process of the nozzle assembly 4 to the forming platform 2. The first insulating sheet 451 can eliminate the influence of the electric field generated on the resilient sheet 422 on the vertical mounting plate 421, the fixing plate 41, and the like.
In one embodiment, the printer base 1 further includes a supporting plate 12 perpendicular to the base plate 11, and the head assembly guide rod 51 is fixedly mounted on the supporting plate 12 by a mounting mechanism 52.
In this embodiment, the installation mechanism 52 is utilized to fixedly install the nozzle assembly guide rod 51 on the support plate 12, so as to ensure the stability of the nozzle assembly guide rod 51, avoid influencing the leveling process, and improve the leveling precision of the 3D printer.
In an embodiment, there are 2 nozzle assembly guide rods 51, the mounting mechanism 52 includes 4 mounting positions 521, two mounting positions 521 are mounted on four corners of the supporting plate 12 to form two sets of mounting positions in the vertical direction, and one nozzle assembly guide rod 51 is mounted between the two sets of mounting positions.
In this embodiment, specifically, two nozzle assembly guide rods 51 are respectively installed at two sides of the support plate 12 through the 4 installation positions 521, so as to improve the stability of the nozzle assembly guide rods 51.
In a specific application scenario, the mounting position 521 includes a mounting block and a screw for fixing the mounting block to the support plate 12, and the mounting block is provided with a mounting hole for the nozzle assembly guide rod 51 to pass through.
In one embodiment, the lifting assembly 3 includes a guide plate 31 sleeved between the two nozzle assembly guide rods 51 and capable of moving up and down between the two nozzle assembly guide rods 51, an extension plate 311 is disposed in the middle of the guide plate 31, and the fixing plate 41 is fixedly mounted on the extension plate 311.
In this embodiment, the guide plate 31 is used to drive the nozzle assembly 4 to move on the nozzle assembly guide rod 51. Specifically, the extension plate 311 is provided outward of the guide plate 31, so that the fixing plate 41 can be easily mounted, and a sufficient space is provided for components (e.g., the head mounting plate 42, the contact conductive sheet 411, etc.) mounted on the fixing plate 41, thereby preventing the components mounted on the fixing plate 41 from affecting the movement of the head assembly 4.
In one embodiment, the lifting assembly 3 further comprises a driving mechanism 32 disposed on the base plate 11, and the driving mechanism 32 is connected to the guide plate 31 through a screw 33.
In this embodiment, when the lifting assembly 3 is in a working state, the mechanism drives the guide plate 31 connected thereto to move up and down along the nozzle assembly guide rod 51, so as to achieve the effect of driving the nozzle assembly 4 to move up and down along the nozzle assembly guide rod 51.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A3D printer with an automatic leveling device, comprising: the device comprises a printer base, a forming platform, a lifting assembly, a spray head assembly and a spray head assembly guide rod; the printer base comprises at least one horizontally arranged base plate, the forming platform is arranged on the base plate, the lifting assembly is arranged on the base plate and connected with the spray head assembly guide rod, and the spray head assembly guide rod drives the spray head assembly to move up and down through a fixing plate;
the one end of fixed plate is provided with a shower nozzle mounting panel, the shower nozzle mounting panel include the vertical mounting panel of a vertical setting and the level set up in shell fragment on the vertical mounting panel, be provided with earlier on the fixed plate contact conducting strip that the shell fragment extends, the shell fragment with contact conducting strip passes through a regulating part elastic contact, the shower nozzle subassembly set up in on the shell fragment just the shower nozzle of shower nozzle subassembly is towards the shaping platform.
2. The 3D printer with the automatic leveling device according to claim 1, wherein a limiting member is arranged at the lower end of the vertical mounting plate and below the elastic sheet.
3. The 3D printer with the automatic leveling device according to claim 1, wherein the contact conductive piece comprises a vertical conductive piece and a horizontal conductive piece connected with the vertical conductive piece, the vertical conductive piece is fixedly installed on the back of the fixing plate, and the horizontal conductive piece is arranged below the elastic piece.
4. The 3D printer with the auto-leveling device of claim 3, wherein a spring contact is disposed on a lower surface of the spring, and a conductive pad contact is disposed on an upper surface of the horizontal conductive pad, the spring contact and the conductive pad contact being vertically aligned.
5. The 3D printer with the automatic leveling device according to claim 1, wherein a horizontal extension portion is forwardly arranged at the upper end of the vertical mounting plate, the adjusting member is arranged on the horizontal extension portion, the adjusting member comprises an adjusting bolt and a spring, the adjusting bolt penetrates through the horizontal extension portion, a step portion is arranged at the head of the adjusting bolt, one end of the spring abuts against the step portion, and the other end of the spring abuts against the upper surface of the elastic sheet.
6. The 3D printer with the automatic leveling device of claim 1, wherein a first insulating sheet is disposed at the bottom of the vertical mounting plate, and a second insulating sheet is disposed between the fixing plate and the vertical mounting plate.
7. The 3D printer with the auto-leveling device of claim 1, wherein the printer base further comprises a support plate perpendicular to the base plate, and the nozzle assembly guide rod is fixedly mounted on the support plate by a mounting mechanism.
8. The 3D printer with the automatic leveling device according to claim 7, wherein 2 nozzle assembly guide rods are arranged, the installation mechanism comprises 4 installation positions, the 4 installation positions are installed at four corners of the supporting plate in pairs to form two groups of installation positions in the vertical direction, and one nozzle assembly guide rod is installed between each two groups of installation positions.
9. The 3D printer with the automatic leveling device according to claim 8, wherein the lifting assembly comprises a guide plate which is sleeved between the two nozzle assembly guide rods and can move up and down on the two nozzle assembly guide rods, an extension plate is arranged in the middle of the guide plate, and the fixing plate is fixedly installed on the extension plate.
10. The 3D printer with the auto-leveling device of claim 9, wherein the lifting assembly further comprises a driving mechanism disposed on the base plate, the driving mechanism being connected to the guide plate by a lead screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022471697.4U CN214111489U (en) | 2020-10-30 | 2020-10-30 | 3D printer with automatic leveling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022471697.4U CN214111489U (en) | 2020-10-30 | 2020-10-30 | 3D printer with automatic leveling device |
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| Publication Number | Publication Date |
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| CN214111489U true CN214111489U (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022471697.4U Active CN214111489U (en) | 2020-10-30 | 2020-10-30 | 3D printer with automatic leveling device |
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|---|---|
| CN (1) | CN214111489U (en) |
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- 2020-10-30 CN CN202022471697.4U patent/CN214111489U/en active Active
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