A fixing device for a bearing base for 3D printing

By designing a load base fixing device for 3D printing that includes transmission assembly, adjustment assembly, fixing assembly and support assembly, the problems of pallet offset and inclination are solved, and the stable fixation of pallets and the convenience of 3D printing is improved.

CN112848288BActive Publication Date: 2025-03-14ANHUI CHUNGU 3D PRINTING INTELLIGENT EQUIP IND TECH RES INST CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202011520224.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-12-21
Publication Date
2025-03-14
Estimated Expiration
2040-12-21

AI Technical Summary

Technical Problem

The existing 3D printing carrier base lacks fixing devices for pallets, which makes the pallets easily offset and tilt during use, causing inconvenience to 3D printing.

Method used

A fixing device including a base plate, a through groove, a transmission assembly, an adjustment assembly, a fixing assembly and a support assembly is designed. The drive assembly drives the rotary plate, the adjustment assembly and the fixing assembly clamp and fix the pallet, and the support assembly stabilizes the bottom plate through the shock absorber mechanism.

Benefits of technology

The stable fixation of the pallet is achieved, avoiding the pallet offset and tilt, improving the convenience and efficiency of 3D printing, and providing protection for items in the pallet through the shock absorption mechanism.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN112848288B_ABST
    Figure CN112848288B_ABST
Patent Text Reader

Abstract

The present invention discloses a fixing device of a bearing base for 3D printing, comprising a base plate, a through groove is embedded at the center of the bottom of the base plate, a transmission component is fixedly installed in the inner cavity of the through groove, an adjustment component is embedded at the center of the top of the base plate, and the bottom of the adjustment component is fixedly installed with the top of the transmission component; the present invention starts a motor through a conventional mechanical switch, the output shaft of the motor drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the rotating shaft to rotate, the rotating shaft drives the rotating plate to rotate, and the rotating plate drives the tray to rotate, thereby achieving the purpose of adjusting the tray; by placing the tray on the top of the rotating plate, rotating the screw rod through the handle, the screw rod rotates and moves in the screw sleeve, the screw rod drives the clamping plate to move, the clamping plate drives the rubber plate to move, the rubber plate approaches the tray and clamps the tray, thereby achieving the purpose of clamping the tray.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing equipment, and in particular to a fixing device for a bearing base for 3D printing. Background Art

[0002] 3D printing is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses digital model files as the basis and uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. 3D printing is usually achieved using digital technology material printers. It is often used to make models in the fields of mold manufacturing, industrial design, etc., and then gradually used for the direct manufacturing of some products. There are already parts printed using this technology. This technology is used in jewelry, footwear, industrial design, architecture, engineering and construction, automobiles, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms and other fields. Ordinary printers used in daily life can print flat objects designed by computers, while the so-called 3D printers are different from ordinary printers. The working principles of the two machines are basically the same, but the printing materials are slightly different. The printing materials of ordinary printers are ink and paper, while 3D printers are equipped with different "printing materials" such as metal, ceramic, plastic, sand, etc., which are real raw materials. After the printer is connected to the computer, the "printing materials" can be stacked layer by layer through computer control, and finally the blueprint on the computer can be turned into a physical object. In layman's terms, a 3D printer is a device that can "print" real 3D objects, such as printing a robot, printing a toy car, printing various models, and even food, etc. The reason why it is commonly called a "printer" is based on the technical principles of ordinary printers, because the layered processing process is very similar to inkjet printing. The support base is a component of a 3D printer, usually used to place a tray.

[0003] The existing supporting base in use lacks a fixing device for fixing the tray. When the tray is placed on the top of the supporting base, the tray is prone to offset and tilt due to the lack of fixation and restriction, which brings inconvenience to 3D printing. Therefore, we need to propose a fixing device for the supporting base for 3D printing. Summary of the invention

[0004] The object of the present invention is to provide a fixing device for a bearing base for 3D printing, which has the advantages of good fixing effect and easy adjustment, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fixing device for a bearing base for 3D printing, comprising a bottom plate, a through groove is embedded at the center of the bottom of the bottom plate, a transmission component is fixedly installed in the inner cavity of the through groove, an adjustment component is embedded at the center of the top of the bottom plate, the bottom of the adjustment component is fixedly installed with the top of the transmission component, fixing components are fixedly installed on both sides of the top of the bottom plate, and support components are arranged on both sides below the bottom plate;

[0006] The transmission assembly includes a motor, the motor is fixedly mounted in the inner cavity of the through slot, the output shaft of the motor is sleeved with a first bevel gear, the output shaft of the motor is rotatably mounted on one side of the inner cavity of the through slot, the top of the first bevel gear is meshed with a second bevel gear, and the top of the second bevel gear is fixedly mounted on the bottom of the adjustment assembly;

[0007] The adjusting assembly comprises a rotating shaft, the bottom of the rotating shaft is fixedly mounted on the top of the second bevel gear, the top of the rotating shaft is fixedly rotated and penetrates the bottom plate and extends to the outside of the through slot, and a rotating plate is fixedly mounted thereon, and the rotating plate is embedded at the center of the top of the bottom plate;

[0008] The fixing assembly is fixedly mounted on both sides of the rotating plate, and the fixing assembly includes a support plate, the bottom of the support plate is fixedly mounted on the top of the bottom plate, a screw sleeve is fixedly mounted on the top of the support plate, the inner cavity of the screw sleeve is threadedly connected with a screw rod, and a clamping plate is rotatably mounted on one end of the screw rod;

[0009] The support assembly includes a shock absorbing mechanism, wherein fixing blocks are fixedly installed at both upper and lower ends of the shock absorbing mechanism, and both ends of the inner side of the fixing block are threadedly connected with screws, and one end of the screw, which is located near the top of the shock absorbing mechanism, passes through the base plate and is bolted to the inner wall of the base plate.

[0010] Preferably, the shock absorbing mechanism includes a sleeve, a spring is fixedly installed at the bottom of the inner cavity of the sleeve, a slider is fixedly installed on the top of the spring, a slide rod is fixedly installed on the top of the slider, and the top of the slide rod slides through the sleeve and extends to the outside of the sleeve and is welded to the surface of the fixed block.

[0011] Preferably, a slot is provided on the top of the rotating plate, and the interior of the slot is arranged in a stepped shape.

[0012] Preferably, a groove is provided at the bottom of the inner cavity of the through slot, a plane bearing is fixedly installed in the inner cavity of the groove, and the top of the plane bearing is fixedly installed with the bottom of the turntable.

[0013] Preferably, a plate body is hinged on one side of the bottom of the through slot, an elastic latch is fixedly installed on the bottom of the bottom plate at a position corresponding to the plate body, and the bottom of the plate body is clamped with the bottom of the bottom plate through the elastic latch.

[0014] Preferably, a limiting rod is fixedly mounted on the bottom of the outer side of the clamping plate, and one end of the limiting rod slides through the supporting plate and extends to the outer side of the supporting plate.

[0015] Preferably, a shield is fixedly mounted on the top of the clamping plate, and a rubber plate is bonded to the inner side of the clamping plate.

[0016] Preferably, a movable groove is provided on the top of the bottom plate, and the rotating plate is embedded in the inner cavity of the movable groove.

[0017] Preferably, a handle is fixedly mounted on the outer side of the screw rod, and the surface of the handle is provided with anti-slip grooves.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention starts the motor through a conventional mechanical switch, the output shaft of the motor drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the rotating shaft to rotate, the rotating shaft drives the rotating plate to rotate, and the rotating plate drives the pallet to rotate, thereby achieving the purpose of adjusting the pallet; by placing the pallet on the top of the rotating plate, rotating the screw rod through the handle, the screw rod rotates and moves in the screw sleeve, the screw rod drives the clamping plate to move, the clamping plate drives the rubber plate to move, the rubber plate approaches the pallet and clamps the pallet, thereby achieving the purpose of clamping the pallet.

[0020] 2. The present invention sets a support component, and by rotating the screws at the bottom of the shock absorbing mechanism, the screws are bolted to the top of the load-bearing base to fix and install the device, and by rotating the screws at the top of the shock absorbing mechanism, the screws are bolted to the bottom plate, thereby achieving the purpose of connecting and fixing the bottom plate to the load-bearing base; by setting the shock absorbing mechanism, the impact force generated when the bottom plate is impacted is transmitted to the sliding rod through the fixed block, the sliding rod drives the sliding block to move, the sliding block squeezes the spring, and the spring is deformed after being subjected to pressure. The reverse thrust after the spring is deformed cushions the impact on the bottom plate, thereby achieving the purpose of shock absorption and protecting the items in the tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a front cross-sectional view of the rotating plate of the present invention;

[0023] Figure 3 is a front cross-sectional view of the sleeve of the present invention;

[0024] Figure 4 For the present invention Figure 1 A partial enlarged structural diagram of area A in the middle.

[0025] In the figure: 1. bottom plate; 2. through groove; 3. transmission assembly; 31. motor; 32. first bevel gear; 33. second bevel gear; 4. adjustment assembly; 41. rotating shaft; 42. rotating plate; 5. fixing assembly; 51. support plate; 52. screw sleeve; 53. screw rod; 54. clamping plate; 6. supporting assembly; 61. shock absorbing mechanism; 611. sleeve; 612. spring; 613. slider; 614. slide bar; 62. fixing block; 63. screw; 7. slot; 8. groove; 9. plane bearing; 10. plate; 11. elastic latch; 12. limit rod; 13. shield plate; 14. rubber plate; 15. movable slot; 16. handle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1-4 The present invention provides a technical solution: a fixing device for a bearing base for 3D printing, comprising a bottom plate 1, a through groove 2 is embedded at the center of the bottom of the bottom plate 1, a transmission component 3 is fixedly installed in the inner cavity of the through groove 2, a groove 8 is opened at the bottom of the inner cavity of the through groove 2, a plane bearing 9 is fixedly installed in the inner cavity of the groove 8, and the top of the plane bearing 9 is fixedly installed with the bottom of the turntable. By setting the groove 8, the groove 8 is used to install and accommodate the plane bearing 9. By setting the plane bearing 9, the tray rotates and drives the plane bearing 9 to rotate. The turntable 42 is supported by the plane bearing 9, and the stability of the turntable 42 during rotation is improved;

[0029] A plate body 10 is hingedly connected to one side of the bottom of the through slot 2, and an elastic latch 11 is fixedly installed at the bottom of the bottom plate 1 and at a position corresponding to the plate body 10. The bottom of the plate body 10 is clamped with the bottom of the bottom plate 1 through the elastic latch 11. By setting the plate body 10 and the elastic latch 11, the elastic latch 11 is pulled to disengage from the clamping connection with the plate body 10, so as to facilitate maintenance and repair of the motor 31 in the through slot 2.

[0030] An adjustment component 4 is embedded in the center of the top of the bottom plate 1, the bottom of the adjustment component 4 is fixedly installed with the top of the transmission component 3, the two sides of the top of the bottom plate 1 are fixedly installed with fixing components 5, and the two sides below the bottom plate 1 are provided with support components 6;

[0031] The transmission assembly 3 includes a motor 31, which is fixedly mounted in the inner cavity of the through slot 2. The output shaft of the motor 31 is sleeved with a first bevel gear 32. The output shaft of the motor 31 is rotatably mounted on one side of the inner cavity of the through slot 2. The top of the first bevel gear 32 is meshed with a second bevel gear 33. The top of the second bevel gear 33 is fixedly mounted on the bottom of the adjustment assembly 4.

[0032] The adjusting assembly 4 includes a rotating shaft 41, the bottom of which is fixedly installed with the top of the second bevel gear 33, and the top of the rotating shaft 41 is fixedly rotated and penetrates the bottom plate 1 and extends to the outside of the through slot 2, and a rotating plate 42 is fixedly installed, and the rotating plate 42 is embedded in the center of the top of the bottom plate 1; a card slot 7 is provided on the top of the rotating plate 42, and the interior of the card slot 7 is arranged in a stepped shape. By providing the card slot 7, the card slot 7 is used to accommodate the tray, and by providing the interior of the card slot 7 in a stepped shape, it is convenient to position the trays of different diameters in a small range, and it is convenient to limit the tray; a movable slot 15 is provided on the top of the bottom plate 1, and the rotating plate 42 is embedded in the inner cavity of the movable slot 15, and by providing the movable slot 15, the movable slot 15 is used to install and accommodate the rotating plate 42;

[0033] The fixing assembly 5 is fixedly installed on both sides of the rotating plate 42, and the fixing assembly 5 includes a support plate 51, the bottom of the support plate 51 is fixedly installed with the top of the bottom plate 1, a screw sleeve 52 is fixedly installed on the top of the support plate 51, the inner cavity of the screw sleeve 52 is threadedly connected with a screw rod 53, and a handle 16 is fixedly installed on the outer side of the screw rod 53. The surface of the handle 16 is provided with anti-skid patterns. By setting the handle 16, the handle 16 is used to facilitate the rotation of the screw rod 53. By setting the anti-skid patterns, the anti-skid patterns increase the friction between the palm and the handle 16, thereby achieving the purpose of saving effort and preventing slipping;

[0034] A clamping plate 54 is rotatably mounted on one end of the screw rod 53; a limiting rod 12 is fixedly mounted on the bottom of the outer side of the clamping plate 54, one end of the limiting rod 12 slides through the support plate 51 and extends to the outer side of the support plate 51. By setting the limiting rod 12, the clamping plate 54 drives the limiting rod 12 to move, and the limiting rod 12 slides in the support plate 51. The clamping plate 54 is limited by the limiting rod 12 to prevent the screw rod 53 from driving the clamping plate 54 to rotate when rotating;

[0035] A shield 13 is fixedly installed on the top of the clamping plate 54, and a rubber plate 14 is bonded to the inner side of the clamping plate 54. By setting the shield 13, the shield 13 is driven to move when the clamping plate 54 moves. The shield 13 is used to protect the screw 53 and the screw sleeve 52, and reduce the pollution of dust and debris to the screw 53;

[0036] The support assembly 6 includes a shock absorbing mechanism 61, which includes a sleeve 611. A spring 612 is fixedly installed at the bottom of the inner cavity of the sleeve 611. A slider 613 is fixedly installed on the top of the spring 612. A slide bar 614 is fixedly installed on the top of the slide bar 613. The top of the slide bar 614 slides through the sleeve 611 and extends to the outside of the sleeve 611 and is welded to the surface of the fixed block 62. By setting the shock absorbing mechanism 61, the impact force generated when the bottom plate 1 is impacted is transmitted to the slide bar 614 through the fixed block 62. The slide bar 614 drives the slide bar 613 to move. The slide bar 613 squeezes the spring 612. The spring 612 is deformed after being subjected to pressure. The reverse thrust of the spring 612 after deformation buffers the impact on the bottom plate 1, thereby achieving the purpose of shock absorption and protecting the items in the tray.

[0037] The upper and lower ends of the shock absorbing mechanism 61 are fixedly installed with fixing blocks 62, and the two ends of the inner side of the fixing block 62 are threadedly connected with screws 63. One end of the screw 63, which is located near the top of the shock absorbing mechanism 61, passes through the bottom plate 1 and is bolted to the inner wall of the bottom plate 1.

[0038] Working principle: The motor 31 is started by a conventional mechanical switch, the output shaft of the motor 31 drives the first bevel gear 32 to rotate, the first bevel gear 32 drives the second bevel gear 33 to rotate, the second bevel gear 33 drives the rotating shaft 41 to rotate, the rotating shaft 41 drives the rotating plate 42 to rotate, and the rotating plate 42 drives the tray to rotate, thereby achieving the purpose of adjusting the tray;

[0039] By placing the pallet on the top of the rotating plate 42, the screw rod 53 is rotated by the handle 16, the screw rod 53 rotates and moves in the screw sleeve 52, the screw rod 53 drives the clamping plate 54 to move, the clamping plate 54 drives the rubber plate 14 to move, the rubber plate 14 approaches the pallet and clamps the pallet, thereby achieving the purpose of clamping the pallet;

[0040] At the same time, the clamping plate 54 drives the limiting rod 12 to move, and the limiting rod 12 slides in the support plate 51. The clamping plate 54 is limited by the limiting rod 12 to prevent the clamping plate 54 from rotating when the screw 53 rotates. By setting the shielding plate 13, the clamping plate 54 drives the shielding plate 13 to move when it moves. The shielding plate 13 is used to protect the screw 53 and the screw sleeve 52 to reduce the pollution of dust and debris to the screw 53;

[0041] The rotation of the tray drives the plane bearing 9 to rotate, and the plane bearing 9 supports the rotating plate 42, thereby improving the stability of the rotating plate 42 when rotating; by pulling the elastic latch 11, the elastic latch 11 is disengaged from the card connection with the plate body 10, which is used to facilitate the maintenance and repair of the motor 31 in the through slot 2;

[0042] By setting the support assembly 6, by rotating the screw 63 at the bottom of the shock absorbing mechanism 61, the screw 63 is bolted to the top of the bearing base, so as to fix and install the device, and by rotating the screw 63 at the top of the shock absorbing mechanism 61, the screw 63 is bolted to the bottom plate 1, so as to achieve the purpose of connecting and fixing the bottom plate 1 to the bearing base;

[0043] By setting the shock absorbing mechanism 61, the impact force generated when the bottom plate 1 is impacted is transmitted to the sliding rod 614 through the fixed block 62, and the sliding rod 614 drives the sliding block 613 to move, and the sliding block 613 squeezes the spring 612. The spring 612 is deformed after being subjected to pressure, and the reverse thrust of the spring 612 after deformation cushions the impact on the bottom plate 1, thereby achieving the purpose of shock absorption and protecting the items in the tray.

[0044] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing device for a bearing base for 3D printing, comprising a base plate (1), characterized in that: A through groove (2) is embedded at the center of the bottom of the base plate (1), a transmission component (3) is fixedly installed in the inner cavity of the through groove (2), an adjustment component (4) is embedded at the center of the top of the base plate (1), the bottom of the adjustment component (4) is fixedly installed with the top of the transmission component (3), fixing components (5) are fixedly installed on both sides of the top of the base plate (1), and support components (6) are arranged on both sides of the bottom of the base plate (1); The transmission assembly (3) comprises a motor (31), the motor (31) being fixedly mounted in the inner cavity of the through slot (2), the output shaft of the motor (31) being sleeved with a first bevel gear (32), the output shaft of the motor (31) being rotatably mounted on one side of the inner cavity of the through slot (2), the top of the first bevel gear (32) being meshed with a second bevel gear (33), and the top of the second bevel gear (33) being fixedly mounted on the bottom of the adjustment assembly (4); The adjustment assembly (4) comprises a rotating shaft (41), the bottom of the rotating shaft (41) is fixedly mounted on the top of the second bevel gear (33), the top of the rotating shaft (41) is fixedly rotatably penetrates the bottom plate (1) and extends to the outside of the through slot (2) where a rotating plate (42) is fixedly mounted, the rotating plate (42) being embedded at the center of the top of the bottom plate (1); a slot (7) is provided on the top of the rotating plate (42), the interior of the slot (7) being arranged in a stepped shape; The fixing assembly (5) is fixedly mounted on both sides of the rotating plate (42), and the fixing assembly (5) comprises a support plate (51), the bottom of the support plate (51) is fixedly mounted on the top of the bottom plate (1), a screw sleeve (52) is fixedly mounted on the top of the support plate (51), an inner cavity of the screw sleeve (52) is threadedly connected to a screw rod (53), and one end of the screw rod (53) is rotatably mounted with a clamping plate (54); The support assembly (6) comprises a shock absorbing mechanism (61), wherein fixing blocks (62) are fixedly mounted at both upper and lower ends of the shock absorbing mechanism (61), and screws (63) are threadedly connected to both ends of the inner side of the fixing block (62), and one end of the screw (63) located above the shock absorbing mechanism (61) passes through the bottom plate (1) and is bolted to the inner wall of the bottom plate (1), and the screw (63) is bolted to the top of the supporting base by rotating the screw (63) at the bottom of the shock absorbing mechanism (61), and the screw (63) is bolted to the bottom plate (1) by rotating the screw (63) at the top of the shock absorbing mechanism (61).

2. A fixing device for a 3D printing bearing base according to claim 1, characterized in that: The shock absorbing mechanism (61) comprises a sleeve (611), a spring (612) is fixedly mounted at the bottom of the inner cavity of the sleeve (611), a slider (613) is fixedly mounted on the top of the spring (612), a slide bar (614) is fixedly mounted on the top of the slide bar (613), and the top of the slide bar (614) slides through the sleeve (611) and extends to the outside of the sleeve (611) and is welded to the surface of the fixed block (62).

3. The fixing device of a 3D printing supporting base according to claim 1, characterized in that: A groove (8) is provided at the bottom of the inner cavity of the through slot (2), a plane bearing (9) is fixedly mounted in the inner cavity of the groove (8), and the top of the plane bearing (9) is fixedly mounted on the bottom of the turntable.

4. The fixing device of a 3D printing supporting base according to claim 1, characterized in that: A plate body (10) is hingedly connected to one side of the bottom of the through slot (2), and an elastic latch (11) is fixedly mounted on the bottom of the base plate (1) at a position corresponding to the plate body (10), and the bottom of the plate body (10) is clamped with the bottom of the base plate (1) via the elastic latch (11).

5. The fixing device of a 3D printing supporting base according to claim 1, characterized in that: A limiting rod (12) is fixedly mounted on the bottom of the outer side of the clamping plate (54), and one end of the limiting rod (12) slides through the support plate (51) and extends to the outer side of the support plate (51).

6. The fixing device of a 3D printing supporting base according to claim 1, characterized in that: A shielding plate (13) is fixedly mounted on the top of the clamping plate (54), and a rubber plate (14) is bonded to the inner side of the clamping plate (54).

7. The fixing device of a 3D printing supporting base according to claim 1, characterized in that: A movable groove (15) is provided on the top of the bottom plate (1), and the rotating plate (42) is embedded in the inner cavity of the movable groove (15).

8. The fixing device of a 3D printing supporting base according to claim 1, characterized in that: A handle (16) is fixedly mounted on the outer side of the screw rod (53), and a surface of the handle (16) is provided with anti-slip grooves.

Citation Information

Patent Citations

  • AB-axis structure of five-axis linkage 3D printer

    CN110901061A

  • Printout tray moving structure for 3D printer

    CN111016174A