CN212979258U - Printing device of 3D printing equipment - Google Patents

Abstract

The utility model discloses a printing device of 3D printing apparatus, including casing, Y axle drive arrangement, X axle drive arrangement and a plurality of printer head all are located the inside of casing, X axle drive arrangement and Y axle drive arrangement fixed connection, a plurality of the printer headgear is established at the surface of X axle drive arrangement, the inside of casing is provided with two direction subassemblies, the inside fixed mounting of casing has electric putter, the expansion end fixed connection of electric putter has the carousel, the top fixed connection of carousel has the motor, the output shaft fixed connection of motor has the base station body; base station body top right side is equipped with spreads powder mechanism, and the top left side is equipped with scrapes powder mechanism, spread powder mechanism with scrape powder mechanism all through drive arrangement with the casing inside wall is connected. The utility model discloses a 3D printing apparatus's printing device simple structure, convenient to use prints.

Description

Printing device of 3D printing equipment

Technical Field

The utility model relates to a 3D printing apparatus technical field, concretely relates to 3D printing apparatus's printing device.

Background

Additive manufacturing is commonly known as 3D printing, combines computer aided design, material processing and forming technology, and is a manufacturing technology for manufacturing solid objects by stacking special metal materials, non-metal materials and medical biomaterials layer by layer in modes of extrusion, sintering, melting, photocuring, spraying and the like through a software and numerical control system on the basis of a digital model file.

According to the patent number CN206551489U, the name is a supporting base platform structure for 3D printing, the supporting base platform structure comprises a base platform, a groove is formed in the upper surface of the base platform, a linear driving device is arranged at the bottom of the groove, and the driving end of the linear driving device is fixedly connected with a lifting platform; the method has the advantages of conveniently adjusting the maximum forming height, improving the individuation degree of the 3D printing equipment and the like.

But the device is carrying out the stability of the unable effectual assurance base station body of in-process of adjusting to the base station body, leads to removing the certain deviation that probably appears in-process, has caused certain influence to the product of machine-shaping, and the practicality remains to improve.

In addition, according to patent No. CN210011341U, the name of the powder scraping mechanism for a 3D printing device is that the powder scraping mechanism comprises a first mounting plate, a lower end of the first mounting plate is connected with a connecting rod, and a lower end of the connecting rod is connected with a second mounting plate; the advantages of effective powder scraping, difficult dust diffusion and the like are achieved.

But the device can't carry out effectual clearance to the inner wall of recess, leads to also can attach to certain material at long-time use in-process recess inner wall, and then has leaded to the waste of resource, can't effectual utilization and recovery material, and the practicality remains to improve.

Based on the above situation, the utility model provides a 3D printing apparatus's printing device can effectively solve above problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a 3D printing apparatus. The utility model discloses a 3D printing apparatus's printing device simple structure, convenient to use prints.

The utility model discloses a 3D printing apparatus's printing device has solved among the prior art the technical problem of the unable effectual stability of guaranteeing the base station body of in-process of adjusting the base station body.

Through setting up powder scraping mechanism, the technical problem that can't carry out effectual clearance to the inner wall of recess among the prior art has been solved.

The utility model discloses a following technical scheme realizes:

a printing device of 3D printing equipment comprises a shell, a Y-axis driving device, an X-axis driving device and a plurality of printer heads, wherein the Y-axis driving device, the X-axis driving device and the plurality of printer heads are all located inside the shell, the X-axis driving device is fixedly connected with the Y-axis driving device, the plurality of printer heads are sleeved on the outer surface of the X-axis driving device, two guide assemblies are arranged inside the shell, an electric push rod is fixedly installed inside the shell, a rotating disc is fixedly connected to the movable end of the electric push rod, a motor is fixedly connected to the top of the rotating disc, and an output shaft of the motor is fixedly connected with a base station body;

base station body top right side is equipped with spreads powder mechanism, and the top left side is equipped with scrapes powder mechanism, spread powder mechanism with scrape powder mechanism all through drive arrangement with the casing inside wall is connected.

The utility model discloses a 3D printing apparatus's printing device simple structure, convenient to use prints.

Preferably, scrape powder mechanism and include the mounting panel, the bottom plate fixed mounting of mounting panel has branch, the bottom plate fixed mounting of branch has the baffle, the top fixed mounting of baffle has draught fan and storage assembly, the export of draught fan is through pipeline and storage assembly switch-on, the bottom fixed mounting of baffle has the housing, the bottom of housing is seted up flutedly, the import of draught fan is through pipeline and recess switch-on, the inside of recess is provided with scrapes the material subassembly and removes the subassembly, the inside of housing is provided with flexible subassembly and stay cord, flexible subassembly with scrape the material subassembly and laminate, the one end and the flexible subassembly fixed connection of stay cord, the other end fixedly connected with rings of stay cord.

Preferably, a plurality of mounting holes are formed in the surface of the mounting plate in a penetrating mode, and the mounting holes are arranged in a rectangular array mode.

Preferably, the storage assembly comprises a storage shell, a filter screen is embedded in the top of the storage shell, a side plate is rotatably connected to the side wall of the storage shell through a hinge, and a storage handle is fixedly connected to the side wall of the side plate.

Preferably, scrape the material subassembly and include two quarter butts, two the opposite one end of quarter butt all is connected with the inner wall rotation of recess through the bearing, two fixed mounting has the round bar between the quarter butt.

Preferably, the moving assembly comprises an arc-shaped plate, the outer surface of the arc-shaped plate is fixedly provided with a brush strip, the front surface of the arc-shaped plate is fixedly provided with a long rod, and one end, far away from the arc-shaped plate, of the long rod is fixedly provided with a handle.

Preferably, the telescopic assembly comprises a base plate, a scraper is fixedly mounted at the bottom of the base plate, and a plurality of springs are fixedly mounted on the upper side and the lower side of the base plate.

Preferably, the two guide assemblies are symmetrically distributed by taking the central axis of the electric push rod as a symmetry axis.

Preferably, two equal fixed mounting in the opposite one side of direction subassembly has first dovetail, first dovetail has all been seted up to the inner wall both sides of casing, the direction subassembly is through the inner wall sliding connection of first dovetail and casing.

Preferably, two equal fixed mounting in the relative one side of direction subassembly has arc dovetail, the annular dovetail has all been seted up to the surface of carousel and base station body, the direction subassembly passes through arc dovetail and annular dovetail respectively with the surperficial sliding connection of carousel and base station body.

Preferably, the side wall of the housing is rotatably connected with a door panel through a hinge, a glass window is embedded in the surface of the door panel, and a handle is fixedly mounted on the surface of the door panel.

Preferably, the guide assembly comprises a guide rod, the two ends of the guide rod are fixedly connected with the inner wall of the shell, and two sleeves are sleeved on the outer surface of the guide rod.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

the utility model discloses a 3D printing apparatus's printing device simple structure, convenient to use prints.

1. Compared with the prior art, through the cooperation between direction subassembly, carousel, first dovetail and the annular dovetail etc. realizing under the prerequisite to base station body quick adjustment, can effectively guarantee the stability of base station body, and then can effectively reduce the skew that the base station body produced in the machine-shaping in-process, guarantee the quality of product, the practicality is higher.

2. Compared with the prior art, through the cooperation between direction subassembly, carousel, first dovetail and the annular dovetail etc. both realized the altitude mixture control to the base station body, also realized adjusting the rotation of base station body, and then satisfied more demands in the actual processing, the experience of product is felt better, and the suitability is stronger.

3. Compared with the prior art, scrape powder mechanism through removing the cooperation between subassembly, recess, storage assembly and the flexible subassembly etc. and realized the quick clearance to recess inner wall, and then the adhesion of material on the effectual reduction inner wall, the powerful recovery and the utilization of having guaranteed the material, the experience of product is felt better, and the practicality is higher.

4. Compared with the prior art, scrape powder mechanism through flexible subassembly, scrape the cooperation between material subassembly, stay cord and the rings etc, realized effectively clearing up the round bar surface, avoid the material to adhere to and influence the quality of laying on the round bar, satisfied more demands in the in-service use, the suitability is stronger.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a top view of the guide assembly of the present invention;

fig. 3 is an enlarged view of a structure a in fig. 1.

Fig. 4 is a schematic view of the overall structure of the powder scraping mechanism of the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 4;

fig. 6 is a side view of the housing of the present invention;

fig. 7 is a schematic structural view of the storage assembly of the present invention.

In the figure: 700. a powder spreading mechanism; 800. a powder scraping mechanism; 100. a second electric push rod;

21. a housing; 22. a Y-axis drive device; 23. an X-axis drive device; 24. a printer head; 25. a guide assembly; 26. an electric push rod; 27. a turntable; 28. a motor; 29. a base station body; 210. a first dovetail block; 211. a first dovetail groove; 212. an arc dovetail block; 213. an annular dovetail groove; 214. a door panel; 215. A glass window; 216. a handle; 2501. a guide bar; 2502. a sleeve;

81. mounting a plate; 82. a strut; 83. a partition plate; 85. an induced draft fan; 86. a receiving assembly; 87. a housing; 88. a groove; 89. a scraping component; 810. a moving assembly; 811. mounting holes; 812. a telescoping assembly; 813. Pulling a rope; 814. a hoisting ring; 8601. a housing case; 8602. a filter screen; 8603. a side plate; 8604. a storage handle; 8901. a short bar; 8902. a round bar; 81001. an arc-shaped plate; 81002. a brush bar; 81003. a long rod; 81004. a grip; 81201. a base plate; 81202. a scraper; 81203. a spring.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The utility model discloses in technical features such as shop's powder mechanism, Y axle drive arrangement and X axle drive arrangement (the utility model discloses a component unit/component), if do not have the special explanation, all obtain from conventional commercial approach, or make with conventional method, its concrete structure, theory of operation and the control mode that may involve, spatial arrangement mode adopt the conventional selection in this field can, should not be regarded as the innovation point of the utility model is at, to the technical staff in this field, can understand, the utility model discloses a do not do further specifically expand the detailing.

Example 1:

as shown in fig. 1 to 7, a printing device of a 3D printing apparatus includes a housing, a Y-axis driving device, an X-axis driving device, and a plurality of printer heads, where the Y-axis driving device, the X-axis driving device, and the plurality of printer heads are all located inside the housing, the X-axis driving device is fixedly connected to the Y-axis driving device, the plurality of printer heads are sleeved on an outer surface of the X-axis driving device, two guiding assemblies are arranged inside the housing, an electric push rod is fixedly installed inside the housing, a rotating disc is fixedly connected to a movable end of the electric push rod, a motor is fixedly connected to a top of the rotating disc, and an output shaft of the motor is fixedly connected to a base station body;

base station body top right side is equipped with spreads powder mechanism, and the top left side is equipped with scrapes powder mechanism, spread powder mechanism with scrape powder mechanism all through drive arrangement with the casing inside wall is connected.

Example 2:

as shown in fig. 1 to 7, a printing apparatus of a 3D printing device: the automatic printing machine comprises a shell, a Y-axis driving device, an X-axis driving device and a plurality of printer heads, wherein the Y-axis driving device, the X-axis driving device and the plurality of printer heads are all located inside the shell; the Y-axis driving device and the X-axis driving device are both the existing ball screw mature technology, and are driven by an external power source in the using process; when the printer is used, an external power source is started to drive the Y-axis driving device and the X-axis driving device to work so as to drive the plurality of printer heads to start moving;

base station body top right side is equipped with spreads powder mechanism, and the top left side is equipped with scrapes powder mechanism, spread powder mechanism with scrape powder mechanism all through drive arrangement with the casing inside wall is connected.

Specifically, the driving device is a second electric push rod, and the driving device may also be a driving mechanism including a Y-axis driving device and an X-axis driving device, which can be set by those skilled in the art according to actual needs, and will be understood by those skilled in the art.

The output end of the electric push rod is connected with the mounting plate of the powder scraping mechanism, and the connection mode can be fixed connection (such as welding) or detachable fixed connection commonly used in the field.

As shown in the drawing, scrape powder mechanism and include the mounting panel, the bottom plate fixed mounting of mounting panel has branch, the bottom plate fixed mounting of branch has the baffle, the top fixed mounting of baffle has draught fan and storage assembly, the export of draught fan is through the pipeline with storage assembly switch-on, the bottom fixed mounting of baffle has the housing, the bottom of housing is seted up flutedly, the import of draught fan is through pipeline and recess switch-on, the inside of recess is provided with scrapes the material subassembly and removes the subassembly, the inside of housing is provided with telescopic component and stay cord, telescopic component with scrape the material subassembly laminating, the one end and the telescopic component fixed connection of stay cord, the other end fixedly connected with rings of stay cord.

The surface of the mounting plate is provided with a plurality of mounting holes in a penetrating manner, and the mounting holes are arranged in a rectangular array; the mounting hole is convenient for mounting the device at a proper position of the printing equipment.

Concretely, scrape the material subassembly and include two quarter butts, the opposite one end of two quarter butts all is connected with the inner wall rotation of recess through the bearing, and fixed mounting has the round bar between two quarter butts. The moving assembly comprises an arc-shaped plate, a brush strip is fixedly mounted on the outer surface of the arc-shaped plate, a long rod is fixedly mounted on the front surface of the arc-shaped plate, and a handle is fixedly mounted at one end, far away from the arc-shaped plate, of the long rod. The telescopic assembly comprises a base plate, a scraper is fixedly mounted at the bottom of the base plate, and a plurality of springs are fixedly mounted on the upper side and the lower side of the base plate. When the device is used, the induced draft fan is started firstly, the movement of the round rod is controlled through the printing equipment, so that the lower end of the round rod is just in contact with a material, and meanwhile, the round rod can realize continuous rotation by matching with structures such as a short rod, a groove, a bearing and the like; the scraper can effectively clean the outer surface of the round rod under the matching of structures such as a backing plate, a spring and the like, and the phenomenon that the material is attached to the round rod to influence the laying quality is avoided; the lifting ring is pulled to be matched with structures such as a pull rope, a base plate and a spring to drive the scraper to ascend, and then the handle is pulled back and forth to be matched with structures such as a long rod to drive the arc-shaped plate and the brush strip to do reciprocating motion back and forth, so that the inner wall of the groove is cleaned quickly, the adhesion of materials on the inner wall is effectively reduced, the recovery and utilization of the materials are powerfully guaranteed, and the experience of products is better; and the material that clears up is carried for storage assembly through the cooperation of structures such as draught fan and pipeline.

Specifically, the containing assembly comprises a containing shell, a filter screen is embedded in the top of the containing shell, the side wall of the containing shell is rotatably connected with a side plate through a hinge, and a containing handle is fixedly connected with the side wall of the side plate; after the inside of accomodating the casing is carried to the material through structures such as draught fan and pipeline, the filter screen can avoid the material to overflow to cause secondary pollution in scattering to the outside air, and opens the curb plate through accomodating the handle and can carry out quick centralized processing to the material of taking in the casing recovery.

When the powder scraping mechanism is used, the device is firstly arranged at a proper position of the printing equipment by matching with the mounting plate and the mounting hole; then, the movement of the round rod is controlled through the printing equipment, so that the lower end of the round rod is just in contact with the material, and meanwhile, the round rod can continuously rotate by matching with structures such as a short rod, a groove, a bearing and the like; the scraper can effectively clean the outer surface of the round rod under the matching of structures such as a backing plate, a spring and the like, and the phenomenon that the material is attached to the round rod to influence the laying quality is avoided; the lifting ring is pulled to be matched with structures such as a pull rope, a base plate and a spring to drive the scraper to ascend, and then the handle is pulled back and forth to be matched with structures such as a long rod to drive the arc-shaped plate and the brush strip to do reciprocating motion back and forth, so that the inner wall of the groove is cleaned quickly, the adhesion of materials on the inner wall is effectively reduced, the recovery and utilization of the materials are powerfully guaranteed, and the experience of products is better; and the inside of casing is carried in the cooperation that the material that the clearance got off passes through draught fan and pipeline isotructure, and the filter screen can avoid the material to overflow to cause secondary pollution in scattering to the outside air, opens the material that the curb plate can retrieve in the casing through the handle and carries out quick centralized processing, and easy operation and practicality are higher.

The powder scraping mechanism of the utility model realizes the quick cleaning of the inner wall of the groove through the matching among the moving component, the scraping component, the containing component, the telescopic component and the like, thereby effectively reducing the adhesion of materials on the inner wall and powerfully ensuring the recovery and utilization of the materials; meanwhile, the outer surface of the round rod is effectively cleaned, and the phenomenon that the material is attached to the round rod to influence the laying quality is avoided.

Specifically, the side wall of the shell is rotatably connected with a door panel through a hinge, a glass window is embedded in the surface of the door panel, and a handle is fixedly arranged on the surface of the door panel; the inside working condition can be observed fast through the glass window, and the product that processing was accomplished can be taken out fast through the handle open door plant.

Specifically, the opposite sides of the two guide assemblies are fixedly provided with first dovetail blocks, the two sides of the inner wall of the shell are provided with first dovetail grooves, and the guide assemblies are connected with the inner wall of the shell in a sliding mode through the first dovetail blocks and the first dovetail grooves. The opposite sides of the two guide assemblies are fixedly provided with arc-shaped dovetail blocks, the outer surfaces of the rotary table and the base station body are provided with annular dovetail grooves, and the guide assemblies are respectively connected with the surfaces of the rotary table and the base station body in a sliding mode through the arc-shaped dovetail blocks and the annular dovetail grooves. The guide assembly comprises a guide rod, two ends of the guide rod are fixedly connected with the inner wall of the shell, and two sleeves are sleeved on the outer surface of the guide rod; when the rotary table is used, the electric push rod is started to be matched with the first dovetail block, the first dovetail groove, the guide rod, the sleeve and other structures to drive the rotary table, the motor and the base table body to move up and down, and the starting motor is matched with the arc dovetail block, the annular dovetail groove, the guide rod, the sleeve and other structures to drive the base table body to start rotating, so that the height adjustment and the rotation adjustment of the base table body are realized, the flexible and autonomous angle adjustment in the machining process is facilitated, and more requirements in actual machining are met; meanwhile, the stability of the base station body can be effectively guaranteed, the offset generated by the base station body in the machining and forming process can be effectively reduced, the quality of a product is guaranteed, and the experience of the product is better.

When the printing device of the 3D printing equipment is used, an external power source is started to drive the Y-axis driving device and the X-axis driving device to work so as to drive the plurality of printer heads to start moving; then, the electric push rod is started to be matched with the first dovetail block, the first dovetail groove, the guide rod, the sleeve and other structures to drive the rotary table, the motor and the base station body to move up and down; the starting motor is matched with structures such as an arc-shaped dovetail block, an annular dovetail groove, a guide rod, a sleeve and the like to drive the base station body to start rotating, so that the height adjustment and the rotation adjustment of the base station body are realized, the angle can be flexibly and independently adjusted in the machining process, the base station body is machined and molded by matching with the movement of a plurality of printer heads, and the powder scraping mechanism scrapes powder under the driving of the driving device; meanwhile, the stability of the base station body can be effectively guaranteed, the offset generated by the base station body in the machining and forming process can be effectively reduced, the quality of a product is guaranteed, the experience of the product is better, and the practicability is higher.

The utility model discloses 3D printing apparatus's printing device passes through the cooperation between direction subassembly, carousel, first dovetail and annular dovetail etc. and under the prerequisite of realization to base station body quick adjustment, can effectively guarantee the stability of base station body, and then can effectively reduce the skew that produces at machine-shaping in-process base station body, guarantees the quality of product

According to the utility model discloses a description and attached drawing, the technical personnel in the field make or use the utility model discloses a 3D printing apparatus's printing device very easily to can produce the positive effect that the utility model discloses record.

Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims (10)

1. The utility model provides a printing device of 3D printing apparatus which characterized in that: comprises that

The printing machine comprises a shell (21), a Y-axis driving device (22), an X-axis driving device (23) and a plurality of printer heads (24), wherein the Y-axis driving device (22), the X-axis driving device (23) and the plurality of printer heads (24) are all located inside the shell (21), the X-axis driving device (23) is fixedly connected with the Y-axis driving device (22), the plurality of printer heads (24) are sleeved on the outer surface of the X-axis driving device (23), two guide assemblies (25) are arranged inside the shell (21), an electric push rod (26) is fixedly installed inside the shell (21), a turntable (27) is fixedly connected with the movable end of the electric push rod (26), a motor (28) is fixedly connected to the top of the turntable (27), and a base station body (29) is fixedly connected to an output shaft of the motor (28);

powder mechanism (700) are spread to base station body (29) top right side is equipped with, and the top left side is equipped with scrapes powder mechanism (800), spread powder mechanism (700) and scrape powder mechanism (800) all through drive arrangement with casing (21) inside wall is connected.

2. The printing device of the 3D printing apparatus according to claim 1, characterized in that: scrape whitewashed mechanism (800) including mounting panel (81), the bottom plate fixed mounting of mounting panel (81) has branch (82), the bottom plate fixed mounting of branch (82) has baffle (83), the top fixed mounting of baffle (83) has draught fan (85) and accomodates subassembly (86), the export of draught fan (85) is through the pipeline with accomodate subassembly (86) switch-on, the bottom fixed mounting of baffle (83) has housing (87), recess (88) are seted up to the bottom of housing (87), the import of draught fan (85) is through pipeline and recess (88) switch-on, the inside of recess (88) is provided with scrapes material subassembly (89) and removes subassembly (810), the inside of housing (87) is provided with flexible subassembly (812) and stay cord (813), flexible subassembly (812) with scrape the material subassembly (89) laminating, one end of the pull rope (813) is fixedly connected with the telescopic assembly (812), and the other end of the pull rope (813) is fixedly connected with a hanging ring (814).

3. The printing device of the 3D printing apparatus according to claim 2, wherein: the surface of the mounting plate (81) is provided with a plurality of mounting holes (811) in a penetrating way, and the mounting holes (811) are arranged in a rectangular array.

4. The printing device of the 3D printing apparatus according to claim 2, wherein: the storage assembly (86) comprises a storage shell (8601), a filter screen (8602) is embedded in the top of the storage shell (8601), a side plate (8603) is rotatably connected to the side wall of the storage shell (8601) through a hinge, and a storage handle (8604) is fixedly connected to the side wall of the side plate (8603).

5. The printing device of the 3D printing apparatus according to claim 2, wherein: scrape material subassembly (89) and include two quarter butt (8901), two the opposite one end of quarter butt (8901) all is connected through the inner wall rotation of bearing with recess (88), two fixed mounting has round bar (8902) between quarter butt (8901).

6. The printing device of the 3D printing apparatus according to claim 2, wherein: remove subassembly (810) including arc (81001), the surface fixed mounting of arc (81001) has brush strip (81002), the preceding fixed surface of arc (81001) installs stock (81003), the one end fixed mounting that arc (81001) was kept away from to stock (81003) has handle (81004).

7. The printing device of the 3D printing apparatus according to claim 2, wherein: the telescopic assembly (812) comprises a base plate (81201), a scraper (81202) is fixedly mounted at the bottom of the base plate (81201), and a plurality of springs (81203) are fixedly mounted on the upper side and the lower side of the base plate (81201).

8. The printing device of the 3D printing apparatus according to claim 1, characterized in that: the driving device is a second electric push rod (100).

9. The printing device of the 3D printing apparatus according to claim 1, characterized in that: the two guide assemblies (25) are symmetrically distributed by taking the central axis of the electric push rod (26) as a symmetry axis;

the two opposite sides of the two guide assemblies (25) are fixedly provided with first dovetail blocks (210), first dovetail grooves (211) are formed in two sides of the inner wall of the shell (21), and the guide assemblies (25) are connected with the inner wall of the shell (21) in a sliding mode through the first dovetail blocks (210) and the first dovetail grooves (211);

two equal fixed mounting in one side relative of direction subassembly (25) has arc dovetail block (212), annular dovetail groove (213) have all been seted up to the surface of carousel (27) and base station body (29), direction subassembly (25) pass through arc dovetail block (212) and annular dovetail groove (213) respectively with the surface sliding connection of carousel (27) and base station body (29).

10. The printing device of the 3D printing apparatus according to claim 1, characterized in that: a door panel (214) is rotatably connected to the side wall of the shell (21) through a hinge, a glass window (215) is embedded in the surface of the door panel (214), and a handle (216) is fixedly mounted on the surface of the door panel (214);

guide assembly (25) include guide bar (2501), the both ends of guide bar (2501) all are connected with the inner wall fixed connection of casing (21), the surface cover of guide bar (2501) is equipped with two sleeves (2502).

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