Desktop 3D printer

Abstract

The utility model relates to the technical field of printers, in particular to a desktop 3D printer which comprises a 3D printer shell and a cabinet door, an installation cavity with an opening in the front end is formed in the 3D printer shell, and a forming platform is installed in the installation cavity in a lifting mode through a lifting assembly. The forming platform comprises a base and a working plate, a cavity with an opening in the upper end is formed in the base, the working plate is rotatably installed at the opening of the cavity, and a leveling assembly used for leveling the working plate is arranged in the cavity. Through the arrangement of the mounting cavity, the lifting assembly and the forming platform, the forming platform can be installed in the mounting cavity in a lifting mode, compared with an existing workbench with the height not adjustable, the forming platform can be lifted through the lifting assembly, and when a high product needs to be printed and the product is formed, the forming platform can be lifted up and down. When the top end of the product is close to the nozzle and inconvenient to take out, the height of the forming platform can be reduced by operating the lifting assembly, and the product is conveniently taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a desktop 3D printer. Background Art

[0002] 3D printer, also known as three-dimensional printer, is a machine that uses rapid prototyping technology. The working principle of 3D printer is basically the same as that of ordinary printer. It uses computer control to stack printing materials layer by layer and finally turn the blueprint on the computer into a physical object.

[0003] Patent number CN205310840U discloses a multi-material 3D printer, including a housing, a base, a workbench, a nozzle, a three-dimensional motion machine feeding unit and a storage unit are arranged in the housing. Although the printer can realize the switching of multiple materials, a printer can print products with multiple materials. However, since the height of the workbench cannot be adjusted, when printing higher objects, the distance between the finished product and the nozzle is small, which makes it inconvenient to take out the finished product, so it needs to be improved. Utility Model Content

[0004] In view of the problem that the height of the workbench in the prior art cannot be adjusted, when printing a higher object, the distance between the finished product and the nozzle is small, which makes it inconvenient to take out the finished product. The utility model provides a desktop 3D printer, which can realize the lifting and adjusting of the molding platform through a lifting component, so as to facilitate the removal of the finished product in the installation cavity.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A desktop 3D printer comprises a 3D printer housing and a cabinet door. The 3D printer housing is provided with an installation cavity with a front end opening. A molding platform is installed in the installation cavity in a liftable manner through a lifting component. The molding platform comprises a base and a working plate. A cavity with an upper end opening is provided in the base. The working plate is rotatably installed at the cavity opening. A leveling component for leveling the working plate is provided in the cavity.

[0007] Furthermore, a first mounting block is relatively provided on the bottom wall of the mounting cavity, and a second mounting block is relatively provided on the bottom wall of the base; the lifting assembly includes two groups of first connecting rods and second connecting rods hinged to each other in the middle, the two ends of the second connecting rod are respectively hingedly connected to the first mounting block and the second mounting block, the two ends of the first connecting rod are respectively slidingly hingedly connected to the corresponding first mounting block and the second mounting block, and a locking member for locking the corresponding first connecting rod is provided between the lower ends.

[0008] Furthermore, a plurality of first limiting holes are evenly formed at one end of the first mounting block, a first sliding groove is formed at one end of the second mounting block, a sliding shaft extending into the first sliding groove and slidingly sliding on the upper end of the second connecting rod, and the locking member includes a connecting block connected to the corresponding lower ends of the first connecting rods, and a retractable cross bar is provided at both ends of the connecting block, and the cross bar passes through the corresponding lower end of the first connecting rod and extends into the corresponding first limiting hole.

[0009] Furthermore, a sliding cavity is provided in the connecting block, a first wedge block is provided at one end of the cross bar located in the sliding cavity, a first spring for driving the two first wedge blocks to approach each other is provided in the sliding cavity, and a first inclined surface is provided on the first wedge block; a U-shaped handle is provided on the connecting block, the U-shaped handle includes vertical blocks arranged oppositely and a grip connected between the top ends of the vertical blocks, a spring mounting cavity connected to the sliding cavity is provided in the vertical block, and the spring mounting cavity is provided with a second wedge block whose lower end extends into the sliding cavity through a second spring, and a second inclined surface is provided on the second wedge block, and the second spring is used to drive the second wedge block to move downward, and the downward movement of the second wedge block is used to drive the second inclined surface to squeeze the first inclined surface to drive the cross bar to extend out of the sliding cavity.

[0010] Furthermore, second slide grooves are arranged on the opposite sides of the vertical blocks along their height direction, and the opposite second wedge-shaped blocks are connected by connecting rods penetrating the corresponding second slide grooves, and the second slide grooves can be used for the connecting rods to move.

[0011] Furthermore, the working plate is hinged at the cavity opening through a connecting shaft, and the leveling assembly includes bolts and nuts relatively arranged below the working plate, the nuts are fixed to the corresponding side walls of the cavity through connecting pieces, the bolts are threadedly connected to the nuts, and the upper ends of the bolts are tightly pressed against the lower plate surface of the working plate.

[0012] Furthermore, the cabinet door is openably arranged at the opening of the installation cavity.

[0013] Furthermore, heat dissipation holes are provided on the shell of the 3D printer.

[0014] Furthermore, an operating groove for leveling operation is provided on the front side of the base.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model, through the arrangement of the installation cavity, the lifting assembly and the molding platform, enables the molding platform to be installed in the installation cavity in a liftable manner. Compared with the existing workbench with non-adjustable height, the utility model can quickly lift and lower the molding platform through the lifting assembly, so as to facilitate the adjustment of the distance between the molding platform and the nozzle at the top of the installation cavity to take out the product.

[0017] 2. The utility model, through the arrangement of the cavity, the working plate and the leveling assembly, enables the leveling assembly to level the working plate, so as to facilitate the printing of the nozzle at the top of the cavity on the working plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a desktop 3D printer.

[0019] Figure 2 It is a side view schematic diagram of the lifting group in the utility model.

[0020] Figure 3 It is a structural schematic diagram of the locking member in the utility model.

[0021] Figure 4 It is a schematic diagram of the structure of the leveling component in the utility model.

[0022] The meaning of the symbols in the figure is:

[0023] 100, 3D printer housing; 101, mounting cavity; 110, cabinet door; 120, molding platform; 121, cavity; 122, operating slot; 123, working plate; 124, base; 130, lifting assembly; 140, connecting block; 200, first mounting block; 201, second limiting hole; 202, first limiting hole; 210, second mounting block; 211, first slide groove; 212, third limiting hole; 220, first connecting rod; 221, second connecting rod; 230, U-shaped handle; 300, cross bar; 301, first wedge block; 302, first spring; 310, vertical block; 311, second slide groove; 312, second spring; 313, second wedge block; 314, connecting rod; 400, nut; 401, bolt; 402, connecting piece. DETAILED DESCRIPTION

[0024] 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "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 this application can be understood according to specific circumstances.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0028] The utility model provides a technical solution:

[0029] See also Figure 1 In this embodiment, a desktop 3D printer includes a 3D printer housing 100 and a cabinet door 110. The 3D printer housing 100 is provided with an installation cavity 101 with a front end opening. A molding platform 120 is installed in the installation cavity 101 in a liftable manner through a lifting assembly 130; the molding platform 120 includes a base 124 and a working plate 123. A cavity 121 with an upper end opening is provided in the base 124. The working plate 123 is rotatably installed at the opening of the cavity 121. A leveling assembly for leveling the working plate 123 is provided in the cavity 121.

[0030] In this embodiment, the 3D printer housing 100 is used to provide installation space and protection for internal components (such as the molding platform 120, the nozzle, etc.) installed inside. In actual use, the nozzle is installed on the top wall of the installation cavity 101 above the molding platform 120, and the cabinet door 110 is installed at the opening of the installation cavity 101 through the hinge to block the installation cavity 101;

[0031] Among them, through the setting of the lifting component 130, when a higher product needs to be printed, and the top of the product on the forming platform 120 is too close to the nozzle (not shown in the figure), making it inconvenient to take the product out of the installation cavity 101, the lifting component 130 can drive the forming platform 120 to rise and fall in the installation cavity 101, thereby adjusting the distance between the top of the product and the nozzle, so that the product is easy to take out, making it more applicable;

[0032] In actual use of this embodiment, the molding platform 120 is used to install the working plate 123, the nozzle is used to spray the melted material on the working plate 123, the working plate 123 is used to carry the sprayed material, and the material is continuously accumulated to finally become a finished product. Among them, by setting the leveling component, when the working plate 123 is skewed, the leveling component can level the working plate 123, so as to facilitate the printing of the nozzle;

[0033] Compared with the existing molding platform whose height cannot be adjusted, the molding platform 120 in this embodiment can be adjusted by the lifting assembly 130, so that the printed product can be easily taken out, making it more applicable;

[0034] In order to better dissipate the heat of the installation cavity 101, even if the internal components installed in the installation cavity 101 are cooled, the 3D printer housing 100 is provided with heat dissipation holes (not shown in the figure) to promote air circulation inside and outside the installation cavity 101 so as to achieve better heat dissipation; the aperture of the heat dissipation hole is small to prevent large particles of dust from entering the installation cavity 101 through the heat dissipation hole.

[0035] Combination Figure 2 As shown, in this embodiment, a first mounting block 200 is relatively provided on the bottom wall of the mounting cavity 101, and a second mounting block 210 is relatively provided on the bottom wall of the base 124; the lifting assembly 130 includes two groups of first connecting rods 220 and second connecting rods 221 which are hinged to each other in the middle, and the two ends of the second connecting rod 221 are respectively hingedly connected to the first mounting block 200 and the second mounting block 210, and the two ends of the first connecting rod 220 are respectively slidably hingedly connected to the corresponding first mounting block 200 and the second mounting block 210, and a locking device for locking the corresponding lower end of the first connecting rod 220 is provided. The locking member has two first limiting holes 202 evenly formed at one end of the first mounting block 200, a first sliding groove 211 formed at one end of the second mounting block 210, and a sliding shaft extending into the first sliding groove 211 and slidingly sliding therein at the upper end of the first connecting rod 220; the locking member comprises a connecting block 140 connected to the lower ends of the corresponding first connecting rods 220, and a retractable cross bar 300 is provided at both ends of the connecting block 140, and the cross bar 300 passes through the lower ends of the corresponding first connecting rods 220 and extends into the corresponding first limiting holes 202, and a U-shaped handle 230 is provided on the connecting block 140.

[0036] In this embodiment, the lifting assembly 130 is fixed by the arrangement of the first mounting block 200 and the second mounting block 210. The first mounting block 200 and the second mounting block 210 are both arranged in the front-to-back direction. The first mounting block 200 is fixed to the bottom wall of the mounting cavity 101 by welding, and the second mounting block 210 is fixed to the bottom wall of the base 124 by welding. The welding makes the connection strength higher and is not easy to shake and fall off.

[0037] The first connecting rod 220 and the second connecting rod 221 are hinged to each other, so that the angle between the first connecting rod 220 and the second connecting rod 221 can be changed, thereby driving the molding platform 120 to rise and fall;

[0038] The upper end of the second connecting rod 221 is hingedly connected to the second mounting block 210 through the connecting shaft passing through the third limiting hole 212, and the lower end of the second connecting rod 221 is hingedly connected to the first mounting block 200 through the connecting shaft passing through the second limiting hole 201. With this structure, it is better to realize that the two ends of the second connecting rod 221 are respectively hingedly connected to the first mounting block 200 and the second mounting block 210;

[0039] The first slide groove 211 is arranged along the length direction of the second mounting block 210, and the upper end of the first connecting rod 220 is provided with a sliding shaft extending into the first slide groove 211 and slidingly connected to the upper end of the first connecting rod 220 on the second mounting block 210 by sliding the sliding shaft in the first slide groove 211;

[0040] The first limiting holes 202, the connecting block 140 and the cross bar 300 are arranged so that the connecting block 140 can connect the lower ends of the first connecting rods 220 at both sides, wherein the two ends of the cross bar 300 extending out of the connecting block 140 are inserted into the corresponding first limiting holes 202, so that the lower end of the first connecting rod 220 is fixed, even if the locking member locks the position of the first connecting rod 220, so that the lifting assembly remains fixed and the molding platform 120 is supported; wherein two first limiting holes 202 are provided, which are arranged at intervals along the circumference of the first mounting block 200, so that the molding platform 120 can be located at different heights by inserting the cross bar 300 into the first limiting holes 202 at different positions, so as to facilitate printing and product removal;

[0041] Among them, through the setting of the U-shaped handle 230, when performing the lifting operation, when the locking member releases the fixation of the first connecting rod 220, the user can lift and lower the molding platform 120 by holding the U-shaped handle 230 and pushing and pulling the connecting block 140, which is convenient for operation.

[0042] Combination Figure 2 and Figure 3As shown, in this embodiment, a sliding cavity is provided in the connecting block 140, and a first wedge block 301 is provided at one end of the cross bar 300 located in the sliding cavity. A first spring 302 for driving the two first wedge blocks 301 to approach each other is provided in the sliding cavity, and a first inclined surface is provided on the first wedge block 301; a U-shaped handle 230 is provided on the connecting block 140, and the U-shaped handle 230 includes vertical blocks 310 arranged opposite to each other and a grip connected between the top ends of the vertical blocks 310, and a spring installation cavity connected to the sliding cavity is provided in the vertical block 310, and the spring installation cavity is provided with a second wedge block 313 with a lower end extending into the sliding cavity through a second spring 312, and a second inclined surface is provided on the second wedge block 313, and the second spring 312 is used to drive the second wedge block 313 to move downward, and the downward movement of the second wedge block 313 is used to drive the second inclined surface to squeeze the first inclined surface to drive the cross bar 300 to extend out of the sliding cavity.

[0043] In this embodiment, the crossbar 300, the first wedge block 301 and the first spring 302 can be installed in the connecting block 140 by setting the sliding cavity;

[0044] Among them, through the arrangement of the first wedge block 301, the cross bar 300 and the first spring 302, both ends of the first spring 302 are fixedly connected to the corresponding first wedge block 301, so that the first spring 302 can pull the first wedge blocks 301 closer to each other, thereby driving the cross bar 300 to extend and retract in the sliding cavity;

[0045] When the product is assembled, an opening is set on the lower side of the connecting block 140. First, the first wedge block 301, the cross bar 300 and the first spring 302 are installed in the connecting block 140, and then the bottom plate (not shown in the figure) is fixed to the opening on the lower side of the connecting block 140 by welding, so as to seal the sliding cavity.

[0046] The second wedge block 313 is configured so that the second wedge block 313 can move along the spring installation cavity under the drive of the second spring 312, so that the lower end of the second wedge block 313 extends into the sliding cavity, so that the second inclined surface of the second wedge block 313 is pressed against the first inclined surface of the first wedge block 301. Since the thrust of the second spring 312 is greater than the pulling force of the first spring 302, the first wedge block 301 can be driven to separate from each other, so that the cross bar 300 extends out of the sliding cavity and into the first limiting hole 202, thereby locking the lifting assembly.

[0047] When assembling the product, firstly install the second spring 312 and the second wedge block 313 in the spring installation cavity, and then connect the vertical block 310 to the upper opening of the connecting block 140 by welding.

[0048] Combination Figure 3As shown, in this embodiment, second slide grooves 311 are provided on the opposite sides of the vertical block 310 along the height direction thereof, and the opposite second wedge-shaped blocks 313 are connected by connecting rods 314 penetrating the corresponding second slide grooves 311, and the second slide grooves 311 can be used for the connecting rods 314 to move;

[0049] In this embodiment, by disposing the second sliding groove 311 and the connecting rod 314 , the connecting rod 314 can move along the second sliding groove 311 and simultaneously perform a lifting operation on the opposite second wedge block 313 .

[0050] Among them, the second wedge block 313 is moved upward by moving the connecting rod 314 upward to release the squeezing of the second inclined surface on the first inclined surface. At this time, the first wedge blocks 301 are close to each other under the pulling force of the first spring 302, and the cross bar 300 extends into the connecting block 140. At this time, the U-shaped handle 230 can be pushed to change the angle of the first connecting rod 220 and the second connecting rod 221, thereby performing a lifting operation.

[0051] Combination Figure 4 As shown, in this embodiment, the working plate 123 is hinged at the opening of the cavity 121 through a connecting shaft, and the leveling assembly includes a bolt 401 and a nut 400 relatively arranged below the working plate 123. The nut 400 is fixed to the corresponding side wall of the cavity 121 through a connecting piece 402. The bolt 401 is threadedly connected to the nut 400, and the upper end of the bolt 401 is tightly pressed against the lower plate surface of the working plate 123. The front side surface of the base 124 is provided with an operating groove 122 for leveling operation.

[0052] In this embodiment, the leveling operation is facilitated by the provision of the operating slot 122 .

[0053] In actual use, a level gauge (not shown in the figure) is fixedly connected to the upper plate surface of the working plate 123 and located in the middle. By setting the level gauge, it is possible to clearly judge whether the working table is level.

[0054] Among them, a mounting hole is set in the middle part of the working plate 123, and the connecting shaft passes through the mounting hole in the front-to-back direction, so as to realize the rotation connection of the working plate 123 at the opening of the cavity 121. Among them, through the setting of the bolt 401 and the nut 400, the relative movement of the relative bolts 401 can be adjusted at the same time (that is, the movement directions of the bolts on both sides are opposite), that is, the length of the bolt 401 extending out of the nut 400 is controlled to perform the leveling operation on the working plate 123, and the adjustment operation is simple and convenient.

[0055] Working principle: When a higher molded product needs to be taken out, the molding platform 120 needs to be lowered. The U-shaped handle 230 can be held and the connecting rod 314 can be lifted up. The cross bar 300 will be retracted into the sliding cavity to release the lock of the lifting assembly. At this time, the U-shaped handle 230 can be moved horizontally outward to a suitable position to loosen the connecting rod 314. The cross bar 300 is extended and inserted into the first outer limiting hole 202 to lock the lifting assembly. At this time, the molding platform 120 is lowered and the printed object can be taken out.

[0056] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A desktop 3D printer, comprising a 3D printer housing (100) and a cabinet door (110), characterized in that: A 3D printer housing (100) is provided with a mounting cavity (101) with a front end opening, and a molding platform (120) is installed in the mounting cavity (101) in a liftable manner through a lifting assembly (130); the molding platform (120) comprises a base (124) and a working plate (123), a cavity (121) with an upper end opening is provided in the base (124), the working plate (123) is rotatably installed at the opening of the cavity (121), and a leveling assembly for leveling the working plate (123) is provided in the cavity (121).

2. A desktop 3D printer according to claim 1, characterized in that: A first mounting block (200) is disposed on the bottom wall of the mounting cavity (101) and a second mounting block (210) is disposed on the bottom wall of the base (124). The lifting assembly (130) comprises two groups of first connecting rods (220) and second connecting rods (221) which are hinged to each other at the middle, the two ends of the second connecting rod (221) are respectively hingedly connected to the first mounting block (200) and the second mounting block (210), the two ends of the first connecting rod (220) are respectively slidably hingedly connected to the corresponding first mounting block (200) and the second mounting block (210), and a locking member for locking the first connecting rod (220) is disposed between the lower ends thereof.

3. A desktop 3D printer according to claim 2, characterized in that: A plurality of first limiting holes (202) are evenly arranged at one end of the first mounting block (200), a first sliding groove (211) is arranged at one end of the second mounting block (210), an upper end of the first connecting rod (220) is provided with a sliding shaft extending into the first sliding groove (211) for sliding, and the locking member comprises a connecting block (140) connected to the lower end of the corresponding first connecting rod (220), and a retractable cross bar (300) is arranged at both ends of the connecting block (140), and the cross bar (300) passes through the lower end of the corresponding first connecting rod (220) and extends into the corresponding first limiting hole (202).

4. A desktop 3D printer according to claim 3, characterized in that: A sliding cavity is provided in the connecting block (140), and a first wedge block (301) is provided at one end of the cross bar (300) located in the sliding cavity. A first spring (302) for driving the two first wedge blocks (301) to approach each other is provided in the sliding cavity, and a first inclined surface is provided on the first wedge block (301); a U-shaped handle (230) is provided on the connecting block (140), and the U-shaped handle (230) includes vertical blocks (310) arranged opposite to each other and a grip connected between the top ends of the vertical blocks (310); a spring installation cavity communicating with the sliding cavity is provided in the vertical block (310), and a second wedge block (313) whose lower end extends into the sliding cavity is provided in the spring installation cavity through a second spring (312), and a second inclined surface is provided on the second wedge block (313), and the second spring (312) is used to drive the second wedge block (313) to move downward, and the downward movement of the second wedge block (313) is used to drive the second inclined surface to squeeze the first inclined surface to drive the cross bar (300) to extend out of the sliding cavity.

5. A desktop 3D printer according to claim 4, characterized in that: Second slide grooves (311) are arranged on the opposite sides of the vertical block (310) along the height direction thereof, and the opposite second wedge blocks (313) are connected by connecting rods (314) penetrating the corresponding second slide grooves (311), and the second slide grooves (311) allow the connecting rods (314) to move.

6. A desktop 3D printer according to claim 1, characterized in that: The working plate (123) is hinged at the opening of the cavity (121) through a connecting shaft. The leveling assembly comprises a bolt (401) and a nut (400) which are relatively arranged below the working plate (123). The nut (400) is fixed to the corresponding side wall of the cavity (121) through a connecting piece (402). The bolt (401) is threadedly connected to the nut (400). The upper end of the bolt (401) is tightly pressed against the lower plate surface of the working plate (123).

7. A desktop 3D printer according to claim 1, characterized in that: The cabinet door (110) is arranged at the opening of the installation cavity (101) in an openable and closable manner.

8. A desktop 3D printer according to claim 1, characterized in that: The first mounting block (200) is fixedly connected to the bottom wall of the mounting cavity (101) by welding, and the second mounting block (210) is fixedly connected to the bottom wall of the base (124) by welding.

9. A desktop 3D printer according to claim 1, characterized in that: The 3D printer housing (100) is provided with heat dissipation holes.

10. A desktop 3D printer according to claim 6, characterized in that: An operating slot (122) for performing a leveling operation is provided on the front side of the base (124).

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