Floating tray mechanism and 3D printing equipment with same

Abstract

The utility model provides a floating charging tray mechanism and 3D printing equipment with the floating charging tray mechanism, the floating charging tray mechanism comprises a base plate, the base plate is provided with a charging tray mounting groove, the charging tray mounting groove is arranged on the base plate, and the side part of the charging tray mounting groove is provided with an opening for inserting a charging tray; the floating block is arranged below the base plate in a floating mode in the vertical direction, and when the floating block floats upwards, the upper end of the floating block can stretch into the charging tray mounting groove so as to abut against the charging tray; the locking assembly comprises a driving piece and a locking piece, the driving piece and the locking piece are arranged on one side of the base plate or the floating block, and the driving piece can drive the floating block to float upwards; the locking piece can enable the floating block to keep floating upwards so as to lock the charging tray, or the locking piece can enable the floating block to keep sinking so as to enable the charging tray to be taken and placed through the opening. Through the technical scheme provided by the invention, the problem that the charging tray is difficult to insert into the floating charging tray mechanism in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, and in particular to a floating material tray mechanism and a 3D printing device having the same. Background Art

[0002] 3D printing technology is a rapid manufacturing technology that creates three-dimensional objects by stacking materials layer by layer. Design software is used to create digital models, and metal powder or other special materials are used to build objects. Among them, light-curing 3D printing technology uses a light beam to cure liquid photosensitive resin and bond it to the molding platform to eventually form a product.

[0003] In the related art, the photosensitive resin needs to be placed in the printer's tray. When in use, the gap between the molding platform and the tray is required to be uniform and the parallelism is required to be high, so that the first layer of the product molding process can be firmly adhered to the molding platform, so that printing can be carried out layer by layer, reducing the risk of the molded parts falling. Therefore, the floating tray mechanism is used to achieve the floating setting of the tray. During the printing process, the flexible self-adaptation of the spring is used to achieve the floating of the tray and compensate for the parallelism error.

[0004] In order to pursue printing accuracy, the preload force of the spring is often set to be relatively large, which makes it very difficult to insert the material tray into the floating material tray mechanism. Utility Model Content

[0005] The utility model provides a floating material tray mechanism and a 3D printing device having the same, so as to solve the problem in the related art that it is difficult to insert a material tray into the floating material tray mechanism.

[0006] According to one aspect of the utility model, a floating tray mechanism is provided, which includes: a base plate having a tray mounting groove, the tray mounting groove being arranged on the base plate, and a side portion of the tray mounting groove having an opening for inserting the tray; a floating block being arranged vertically floatably below the base plate, and when the floating block floats, the upper end of the floating block can extend into the tray mounting groove to push against the tray; a locking assembly including a driving member and a locking member, the driving member and the locking member being arranged on one side of the base plate or the floating block, and the driving member can drive the floating block to float; the locking member can keep the floating block floating to lock the tray, or the locking member can keep the floating block sinking so that the tray can be taken in and out from the opening.

[0007] Furthermore, the locking member includes an electromagnet and a magnetic attraction plate, one of the electromagnet and the magnetic attraction plate is arranged on the substrate, and the other of the electromagnet and the magnetic attraction plate is arranged on the side of the floating block away from the substrate. When the electromagnet is in a power-off state, the driving member drives the floating block to float up and the material tray can be taken in and placed through the opening; when the electromagnet is in a power-on state, the electromagnet can cooperate with the magnetic attraction plate by magnetic attraction so that the floating block locks the material tray.

[0008] Furthermore, the magnetic attraction plate is arranged on the lower surface of the floating block, the floating block has a first avoidance groove which is arranged through, and the electromagnet is located in the first avoidance groove.

[0009] Furthermore, an elastic member is provided on the side of the magnetic plate away from the floating block. The magnetic plate is connected to the lower surface of the floating block through a connecting member. Two ends of the elastic member are respectively in contact with the magnetic plate and the connecting member.

[0010] Furthermore, the floating block has a floating position and a sinking position. When the floating block is in the floating position, the floating block extends into the material tray mounting groove to support and lock the material tray. When the floating block moves from the floating position to the sinking position, the floating block is separated from the material tray. The locking member includes a movable member, which is movably arranged on the substrate. The movable member has a contact state with the floating block and a separation state with the floating block. When the movable member is in the contact state, the floating block remains in the sinking position. When the movable member is in the separation state, the driving member drives the floating block to move from the sinking position to the floating position.

[0011] Furthermore, the movable part includes a rotating shaft rotatably arranged on the base plate, the rotating shaft extends in a horizontal direction, a cam is arranged on a side wall of the rotating shaft, and during the rotation of the rotating shaft, the cam can drive the floating block to move.

[0012] Furthermore, the locking assembly also includes a bearing seat and a bearing, the bearing seat is arranged on the base plate, the bearing seat has a through hole, the bearing is arranged in the through hole, and the rotating shaft is passed through the inner hole of the bearing; and / or, the locking assembly also includes a handle, the handle is connected to one end of the rotating shaft away from the cam, and the handle is located on the side of the base plate.

[0013] Furthermore, a second avoidance groove is provided on the upper surface of the floating block, a first rubber pad is provided on the bottom wall of the second avoidance groove, the cam is located in the second avoidance groove, and the cam can abut against the first rubber pad; and / or, a second rubber pad is provided on the floating block, and when the floating block is in the floating position, the second rubber pad is in contact with the lower surface of the substrate.

[0014] Furthermore, a guide column is provided on the lower surface of the substrate, and an annular flange is provided at the lower end of the guide column. The floating block can be floated on the guide column, and the driving member includes a reset spring passed through the guide column, and the two ends of the reset spring are respectively abutted against the annular flange and the lower surface of the floating block.

[0015] Further, the substrate includes a plate body and two pressing blocks arranged on the upper surface of the plate body, the two pressing blocks are arranged opposite to each other along the length direction of the plate body, and the two pressing blocks and the upper surface of the plate body jointly form a material tray mounting groove; and / or, the substrate has a connecting groove arranged vertically, the connecting groove is connected to the material tray mounting groove, and a protrusion is arranged on the upper surface of the floating block, the protrusion is passed through the connecting groove and can abut against the material tray.

[0016] According to another aspect of the utility model, a 3D printing device is provided, which includes a material tray and a floating material tray mechanism. The material tray is detachably arranged in a material tray mounting groove of the floating material tray mechanism. The floating material tray mechanism is the floating material tray mechanism provided above.

[0017] The technical scheme of the utility model is applied, and the floating tray mechanism includes a base plate, a floating block and a locking assembly. The floating block is driven to float by a driving member, and the tray is installed in the tray installation groove on the base plate, so that the upper end of the floating block extends into the tray installation groove and presses against the tray. At this time, the floating block has a small pressing force on the tray. The locking member is used to keep the floating block floating and provide a pressing force for the tray to lock the tray, so that the tray can be locked in the tray installation groove. Alternatively, the locking member is used to keep the floating block sinking to provide space for taking and placing the tray, and the tray is inserted into the tray installation groove from the opening, and then the locking member is separated from the floating block, and the driving member is used to drive the floating block to float. So that the upper end of the floating block extends into the tray installation groove and presses against the tray. At this time, the floating block has a large pressing force on the tray, which can lock the tray and realize the locking of the tray in the tray installation groove. The above scheme is adopted to realize the free taking and placing of the tray on the base plate, and the tray can be firmly locked on the base plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 A cross-sectional view of a floating tray mechanism provided according to Embodiment 1 of the utility model is shown;

[0020] Figure 2 Another cross-sectional view of the floating tray mechanism provided according to the first embodiment of the utility model is shown;

[0021] Figure 3 An exploded view of a floating tray mechanism provided according to the second embodiment of the utility model is shown;

[0022] Figure 4 A cross-sectional view of a floating tray mechanism provided according to the second embodiment of the utility model is shown;

[0023] Figure 5 Another cross-sectional view of the floating tray mechanism provided according to the second embodiment of the utility model is shown;

[0024] Figure 6 A schematic structural diagram of a floating tray mechanism provided according to an embodiment of the utility model is shown;

[0025] Figure 7 A simplified structural diagram of a 3D printing device provided according to an embodiment of the utility model is shown.

[0026] The above drawings include the following reference numerals:

[0027] 10. Base plate; 11. Guide pillar; 12. Plate body; 13. Press block; 14. Connecting groove;

[0028] 20. floating block; 21. first avoidance groove; 22. second avoidance groove; 23. first rubber pad; 24. second rubber pad; 25. protrusion;

[0029] 30. Locking assembly; 31. Driving member; 32. Locking member; 321. Electromagnet; 322. Rotating shaft; 323. Cam; 33. Magnetic plate; 34. Bearing seat; 35. Bearing; 36. Handle; 37. Elastic member. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] like Figures 1 to 6 As shown, an embodiment of the utility model provides a floating tray mechanism, which includes a base plate 10, a floating block 20, and a locking assembly 30. The base plate 10 has a tray mounting groove, which is arranged on the base plate 10, and the side of the tray mounting groove has an opening for inserting the tray. The floating block 20 is vertically floatably arranged below the base plate 10. When the floating block 20 floats up, the upper end of the floating block 20 can extend into the tray mounting groove to push against the tray. The locking assembly 30 includes a driving member 31 and a locking member 32. The driving member 31 and the locking member 32 are arranged on one side of the base plate 10 or the floating block 20. The driving member 31 can drive the floating block 20 to float up. The locking member 32 can keep the floating block 20 floating to lock the tray, or the locking member 32 can keep the floating block 20 sinking so that the tray can be taken in and out from the opening.

[0032] The technical solution of the utility model is applied, and the floating tray mechanism includes a base plate 10, a floating block 20 and a locking assembly 30. The driving member 31 is used to drive the floating block 20 to float up, and the tray is installed in the tray installation groove on the base plate 10, so that the upper end of the floating block 20 extends into the tray installation groove and presses against the tray. At this time, the floating block 20 has a small pressing force on the tray. The locking member 32 is used to keep the floating block 20 floating up and provide a pressing force for the tray to lock the tray, so that the tray can be locked in the tray installation groove. Alternatively, the locking member 32 is used to keep the floating block 20 sinking to provide space for the tray to be taken and placed, and the tray is inserted into the tray installation groove from the opening, and then the locking member 32 is separated from the floating block 20, and the driving member 31 is used to drive the floating block 20 to float up. So that the upper end of the floating block 20 extends into the tray installation groove and presses against the tray. At this time, the floating block 20 has a large pressing force on the tray, which can lock the tray and realize the locking of the tray in the tray installation groove. By adopting the above solution, the material tray can be freely taken and placed on the substrate 10 , and the material tray can be firmly locked on the substrate 10 .

[0033] It should be noted that the locking member 32 can lock the floating block 20 in a sunken state, so that the material tray can be taken out of the material tray installation slot. In another case, the locking member 32 can also be used to provide a pressing force for the floating block 20 to lock the material tray in the material tray installation slot. Of course, the driving force provided by the driving member 31 is different in the two cases.

[0034] The floating block 20 only partially extends into the tray installation groove, that is, the upper end of the floating block 20 .

[0035] like Figures 1 to 5 As shown, the lower surface of the base plate 10 is provided with a guide post 11, the lower end of the guide post 11 is provided with an annular flange, the floating block 20 can be floated on the guide post 11, and the driving member 31 includes a return spring that is passed through the guide post 11, and the two ends of the return spring are respectively in contact with the annular flange and the lower surface of the floating block 20. The guide post 11 can be used to arrange the return spring and the floating block 20 on the base plate 10. The return spring can provide driving force for the floating block 20, so that the floating block 20 automatically floats up to resist the material tray.

[0036] like Figure 6 As shown, the substrate 10 includes a plate body 12 and two pressing blocks 13 arranged on the upper surface of the plate body 12. The two pressing blocks 13 are arranged opposite to each other along the length direction of the plate body 12. The two pressing blocks 13 and the upper surface of the plate body 12 jointly form a material tray mounting groove. The substrate 10 with the above structure uses the plate body 12 and the two pressing blocks 13 to form the material tray mounting groove, which has the advantages of simple structure and easy assembly.

[0037] The pressing block 13 is an L-shaped structure.

[0038] Specifically, two small pressing blocks are further provided on the upper surface of the plate body 12 . The two small pressing blocks are located between the two pressing blocks 13 and are used for pressing on the material tray.

[0039] like Figure 3 As shown, the base plate 10 has a connecting groove 14 that is vertically penetrated, and the connecting groove 14 is connected to the material tray installation groove. The upper surface of the floating block 20 is provided with a protrusion 25, which is arranged in the connecting groove 14 and can abut against the material tray. With the above arrangement, the protrusion 25 passes through the connecting groove 14, and can abut against the material tray. Under the premise of ensuring the structural strength of the base plate 10, it is easy to set and process.

[0040] It should be noted that a floating block 20, a guide column 11 and a return spring are correspondingly arranged below each pressing block 13. When the material tray is inserted into the material tray installation slot, two floating blocks 20 can be used to form abutment on both sides of the material tray to achieve a better positioning effect of the material tray.

[0041] like Figure 1 and Figure 2 As shown, in the first embodiment of the present application, the locking member 32 includes an electromagnet 321 and a magnetic plate 33, one of which is arranged on the substrate 10, and the other of which is arranged on the side of the floating block 20 away from the substrate 10. When the electromagnet 321 is in a power-off state, the driving member 31 drives the floating block 20 to float and the material tray can be taken in and placed from the opening; when the electromagnet 321 is in a power-on state, the electromagnet 321 can cooperate with the magnetic plate 33 by magnetic attraction, so that the floating block 20 locks the material tray. When the electromagnet 321 is in a power-on state, it can form a magnetic attraction with the magnetic plate 33 to provide a pressing force to the floating block 20 and lock the material tray. When the electromagnet 321 is in a power-off state, the electromagnet 321 has no magnetic force on the magnetic plate 33. At this time, the driving force provided by the driving member 31 is small, so that the material tray can be conveniently taken in and placed from the material tray installation slot.

[0042] Of course, the electromagnets 321 may be disposed on both the lower surface of the substrate 10 and the upper surface of the floating block 20 without disposing the magnetic attraction plate 33 .

[0043] In other embodiments, when the electromagnets 321 are disposed on both the lower surface of the substrate 10 and the upper surface of the floating block 20, a repulsive force may be formed between the two electromagnets 321 to keep the floating block 20 sinking, and the material tray can be conveniently taken in and out of the material tray installation slot. When the two electromagnets 321 are powered off, the driving force of the driving member 31 is used to float the floating block 20 to lock the material tray.

[0044] Of course, the magnetic attraction plate 33 may also be disposed on the floating block, and the electromagnet 321 may be disposed on the substrate 10 .

[0045] like Figure 1 As shown, the magnetic attraction plate 33 is arranged on the lower surface of the floating block 20, the floating block 20 has a first avoidance groove 21 which is arranged through, and the electromagnet 321 is located in the first avoidance groove 21. With the above arrangement, the first avoidance groove 21 can be used to avoid the electromagnet 321, so as to save space and reduce space occupation.

[0046] like Figure 1 As shown, an elastic member 37 is further provided on the side of the magnetic plate 33 away from the floating block 20. The magnetic plate 33 is connected to the lower surface of the floating block 20 through a connecting member, and the two ends of the elastic member 37 are respectively in contact with the magnetic plate 33 and the connecting member. The elastic member 37 can provide a movement space for the magnetic plate 33 and play a buffering role.

[0047] The elastic member 37 is a buffer spring.

[0048] The working principle of the first embodiment is as follows: the locking member 32 includes an electromagnet 321 and a magnetic attraction plate 33, the electromagnet 321 is fixed on the lower surface of the base plate 10, the floating block 20 has a first avoidance groove 21 provided therethrough, and the magnetic attraction plate 33 is provided on the lower surface of the floating block 20 and is located in the first avoidance groove 21. An elastic member 37 is also provided on the side of the magnetic attraction plate 33 away from the floating block.

[0049] When the electromagnet 321 is in the power-off state, the return spring drives the floating block 20 to float up and the material tray can be taken in and out through the opening. At this time, the magnetic plate 33 contacts the lower surface of the electromagnet 321 under the action of the elastic member 37. The displacement stroke provided by the elastic member 37 is smaller than the displacement stroke provided by the return spring of the floating block 20, and there is a gap between the floating block 20 and the magnetic plate 33.

[0050] When the material tray is inserted into the material tray installation slot, the material tray contacts and presses down the protrusion 25. During this process, the floating block 20 moves downward, driving the magnetic attraction plate 33 to move downward, and the magnetic attraction plate 33 is separated from the electromagnet 321, and a small distance is generated between the two.

[0051] After the electromagnet 321 is powered on, the electromagnet 321 can cooperate with the magnetic plate 33 to provide an upward thrust for the floating block 20, so that the magnetic plate 33 pushes the floating block 20 upward against the material tray, so that the floating block 20 locks the material tray.

[0052] It should be noted that after the material tray is inserted into the material tray mounting slot and the floating block 20 sinks, the electromagnet 321 can be immediately controlled to be in a power-on state, or the 3D printer can be powered on after a period of printing, such as after printing several layers, so that the floating block 20 locks the material tray.

[0053] like Figures 3 to 5As shown, the present application provides a second embodiment, the difference between the second embodiment and the first embodiment is that in the second embodiment, the floating block 20 has a floating position and a sinking position, when the floating block 20 is in the floating position, the floating block 20 extends into the material tray mounting groove to support and lock the material tray, when the floating block 20 moves from the floating position to the sinking position, the floating block 20 is separated from the material tray.

[0054] The locking member 32 includes a movable member, which is movably disposed on the base plate 10. The movable member has a contact state with the floating block 20 and a separation state with the floating block 20. When the movable member is in the contact state, the floating block 20 is kept in the sinking position. When the movable member is in the separation state, the driving member 31 drives the floating block 20 to move from the sinking position to the floating position. By making the movable member contact with the floating block 20, the floating block 20 can be driven to float vertically, so that the floating block 20 is locked in the sinking position, and the tray can be easily taken in and out of the tray installation slot.

[0055] The movable member can move directly in the vertical direction, and a locking structure is provided to keep the movable member in contact with the floating block 20, so that the floating block 20 is kept in the sinking position. Of course, the movable member can also be provided as a rotating shaft 322, and a cam can be provided on the rotating shaft 322.

[0056] like Figures 3 to 5 As shown, the movable part includes a rotating shaft 322 rotatably disposed on the base plate 10, the rotating shaft 322 extends in the horizontal direction, and a cam 323 is disposed on the side wall of the rotating shaft 322. During the rotation of the rotating shaft 322, the cam 323 can drive the floating block 20 to move. The rotation of the rotating shaft 322 drives the rotation of the cam 323, thereby realizing the locking of the floating block 20, which has the advantages of simple structure and easy operation.

[0057] The distance between the center line of the cam 323 and the center line of the rotating shaft 322 can be set according to actual conditions, and is generally less than 10 mm.

[0058] like Figure 3 As shown, the locking assembly 30 further includes a bearing seat 34 and a bearing 35. The bearing seat 34 is disposed on the base plate 10. The bearing seat 34 has a through hole. The bearing 35 is disposed in the through hole. The rotating shaft 322 is passed through the inner hole of the bearing 35. With the above structure, the rotating shaft 322 can be easily fixed on the base plate 10 by using the bearing seat 34. The bearing 35 can reduce the friction between the rotating shaft 322 and the bearing seat 34 when the rotating shaft 322 rotates, so as to reduce wear.

[0059] In the second embodiment, the locking assembly 30 further includes a handle 36, which is connected to one end of the rotating shaft 322 away from the cam 323, and is located at the side of the base plate 10. The handle 36 is used to facilitate the operator to rotate the rotating shaft 322.

[0060] The handle 36 , the rotating shaft 322 and the cam 323 form a force-saving lever structure.

[0061] like Figure 3 As shown, the upper surface of the floating block 20 is provided with a second avoidance groove 22, the bottom wall of the second avoidance groove 22 is provided with a first rubber pad 23, the cam 323 is located in the second avoidance groove 22, the cam 323 can abut against the first rubber pad 23, and the cam 323 can be avoided by using the second avoidance groove 22 to reduce the space occupied by the cam 323, which is conducive to the miniaturization of the device. The first rubber pad 23 can reduce the wear of the cam 323 on the floating block 20 and extend the service life of the device.

[0062] In the second embodiment, the floating block 20 is provided with a second rubber pad 24, and when the floating block 20 is in the floating position, the second rubber pad 24 is in contact with the lower surface of the substrate 10. The second rubber pad 24 can reduce the impact force of the floating block 20 on the substrate 10 when floating, so as to extend the service life of the substrate 10.

[0063] It should be noted that the driving force provided by the return spring in the second embodiment is greater than the driving force provided by the return spring in the first embodiment.

[0064] In the second embodiment, a rotating shaft 322 is provided corresponding to each floating block 20 to respectively keep the corresponding floating block 20 in the sinking position.

[0065] In the second embodiment, when the floating block 20 is in the floating position, the distance between the protrusion 25 and the pressing block 13 is smaller than the thickness of the edge of the material tray. At this time, it is difficult to put the material tray in, which can ensure the interchangeability of the material tray. After the material trays with slight differences in thickness are put in, they can be supported by the protrusion 25. When the floating block 20 is in the sinking position, the distance between the protrusion 25 and the pressing block 13 is larger than the thickness of the edge of the material tray. At this time, the material tray is very easy to put in. The cam 323 can float the floating block 20 to the floating position so that the protrusion 25 presses the material tray.

[0066] like Figure 7As shown, another embodiment of the present application provides a 3D printing device, the 3D printing device includes a tray and a floating tray mechanism, the tray can be placed in the tray mounting groove of the floating tray mechanism, and the floating tray mechanism is the floating tray mechanism provided above. With the 3D printing device, the driving member 31 is used to drive the floating block 20 to float up, the tray is installed in the tray mounting groove on the substrate 10, so that the upper end of the floating block 20 extends into the tray mounting groove and pushes against the tray. At this time, the floating block 20 has a small push force on the tray. The locking member 32 is used to keep the floating block 20 floating up and provide a pressing force for the tray to lock the tray, so that the tray can be locked in the tray mounting groove. Alternatively, the locking member 32 is used to keep the floating block 20 sinking to provide space for the tray to be placed, the tray is inserted into the tray mounting groove from the opening, and then the locking member 32 is separated from the floating block 20, and the driving member 31 is used to drive the floating block 20 to float up. The upper end of the floating block 20 extends into the tray installation groove and presses against the tray. At this time, the floating block 20 has a relatively large pressing force on the tray, which can lock the tray and achieve locking of the tray in the tray installation groove. The tray can be freely taken and placed on the substrate 10, and the tray can be firmly locked on the substrate 10.

[0067] In this embodiment, the 3D printing device includes an optical machine, a molding platform, a lifting mechanism and a floating tray mechanism. The molding platform is located above the floating tray mechanism, and the molding platform is vertically movably arranged on the lifting mechanism. The lifting mechanism drives the molding platform to move vertically to approach or move away from the tray. The optical machine is located below the floating tray mechanism to expose the tray to cure the photosensitive resin on the molding platform and finally form a product.

[0068] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0070] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0071] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0072] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0073] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A floating tray mechanism, characterized in that: The floating tray mechanism comprises: A base plate (10) having a tray mounting groove, the tray mounting groove being arranged on the base plate (10), and a side portion of the tray mounting groove having an opening for inserting a tray; A floating block (20) is vertically arranged below the base plate (10) in a floating manner, and when the floating block (20) floats upward, the upper end of the floating block (20) can extend into the material tray installation groove to abut against the material tray; A locking assembly (30) comprises a driving member (31) and a locking member (32), wherein the driving member (31) and the locking member (32) are arranged on one side of the substrate (10) or the floating block (20), wherein the driving member (31) can drive the floating block (20) to float upward; the locking member (32) can keep the floating block (20) floating upward to lock the material tray, or the locking member (32) can keep the floating block (20) sinking downward to enable the material tray to be taken in and out of the opening.

2. The floating tray mechanism according to claim 1, characterized in that: The locking member (32) comprises an electromagnet (321) and a magnetic attraction plate (33); one of the electromagnet (321) and the magnetic attraction plate (33) is arranged on the substrate (10); the other of the electromagnet (321) and the magnetic attraction plate (33) is arranged on a side of the floating block (20) away from the substrate (10); when the electromagnet (321) is in a power-off state, the driving member (31) drives the floating block (20) to float upward and the material tray can be taken in and out of the opening; when the electromagnet (321) is in a power-on state, the electromagnet (321) can cooperate with the magnetic attraction plate (33) by magnetic attraction, so that the floating block (20) locks the material tray.

3. The floating tray mechanism according to claim 2, characterized in that: The magnetic attraction plate (33) is arranged on the lower surface of the floating block (20); the floating block (20) has a first avoidance groove (21) which is arranged through the floating block; and the electromagnet (321) is located in the first avoidance groove (21).

4. The floating tray mechanism according to claim 3, characterized in that: An elastic member (37) is also provided on the side of the magnetic attraction plate (33) away from the floating block (20); the magnetic attraction plate (33) is connected to the lower surface of the floating block (20) via a connecting member; and two ends of the elastic member (37) are respectively in contact with the magnetic attraction plate (33) and the connecting member.

5. The floating tray mechanism according to claim 1, characterized in that: The floating block (20) has a floating position and a sinking position. When the floating block (20) is in the floating position, the floating block (20) extends into the material tray installation groove to abut against and lock the material tray. When the floating block (20) moves from the floating position to the sinking position, the floating block (20) is separated from the material tray. The locking member (32) comprises a movable member, which is movably arranged on the substrate (10), and has a contact state with the floating block (20) and a separation state with the floating block (20). When the movable member is in the contact state, the floating block (20) is maintained in the sinking position, and when the movable member is in the separation state, the driving member (31) drives the floating block (20) to move from the sinking position to the floating position.

6. The floating tray mechanism according to claim 5, characterized in that: The movable part comprises a rotating shaft (322) rotatably arranged on the base plate (10), wherein the rotating shaft (322) extends in a horizontal direction, and a cam (323) is arranged on a side wall of the rotating shaft (322). When the rotating shaft (322) rotates, the cam (323) can drive the floating block (20) to move.

7. The floating tray mechanism according to claim 6, characterized in that: The locking assembly (30) further comprises a bearing seat (34) and a bearing (35), wherein the bearing seat (34) is arranged on the base plate (10), the bearing seat (34) has a through hole, the bearing (35) is arranged in the through hole, and the rotating shaft (322) is inserted into the inner hole of the bearing (35); and / or, The locking assembly (30) further comprises a handle (36), wherein the handle (36) is connected to an end of the rotating shaft (322) away from the cam (323), and the handle (36) is located on a side of the base plate (10).

8. The floating tray mechanism according to claim 6, characterized in that: The upper surface of the floating block (20) is provided with a second avoidance groove (22), a first rubber pad (23) is provided on the bottom wall of the second avoidance groove (22), the cam (323) is located in the second avoidance groove (22), and the cam (323) can abut against the first rubber pad (23); and / or, A second rubber pad (24) is provided on the floating block (20); when the floating block (20) is located at the floating position, the second rubber pad (24) is in contact with the lower surface of the substrate (10).

9. The floating tray mechanism according to any one of claims 1 to 8, characterized in that: A guide column (11) is arranged on the lower surface of the base plate (10), and an annular flange is arranged at the lower end of the guide column (11). The floating block (20) can be floated on the guide column (11). The driving member (31) includes a return spring which is arranged on the guide column (11), and the two ends of the return spring are respectively in contact with the annular flange and the lower surface of the floating block (20).

10. The floating tray mechanism according to any one of claims 1 to 8, characterized in that: The base plate (10) comprises a plate body (12) and two pressing blocks (13) arranged on the upper surface of the plate body (12), the two pressing blocks (13) being arranged opposite to each other along the length direction of the plate body (12), and the two pressing blocks (13) and the upper surface of the plate body (12) jointly forming the tray installation groove; and / or, The base plate (10) has a connecting groove (14) extending vertically therethrough, the connecting groove (14) being connected to the tray mounting groove, and a protrusion (25) is provided on the upper surface of the floating block (20), the protrusion (25) passing through the connecting groove (14) and being capable of abutting against the tray.

11. A 3D printing device, characterized in that: The 3D printing device comprises a material tray and a floating material tray mechanism, wherein the material tray is arranged in a material tray mounting groove of the floating material tray mechanism so as to be removable and removable, and the floating material tray mechanism is the floating material tray mechanism according to any one of claims 1 to 10.

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