CN113561489A

CN113561489A - Shedder and 3D printer

Info

Publication number: CN113561489A
Application number: CN202110864852.5A
Authority: CN
Inventors: 刘辉林; 黄显彬; 仁世伟
Original assignee: Shenzhen Chuangxiang Sandi Technology Co ltd
Current assignee: Shenzhen Chuangxiang Sandi Technology Co ltd; Shenzhen Chuangxiang 3D Technology Co Ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-10-29
Also published as: CN114474735A

Abstract

The invention discloses a demolding device and a 3D printer, and relates to the technical field of 3D printing. The demolding device comprises a printing platform and a demolding part. The demolding part is movably arranged on the printing platform, one end of the demolding part is provided with a plurality of demolding protrusions, the demolding protrusions are provided with inclined planes, and the inclined planes are obliquely arranged in the direction departing from the demolding part and towards the direction close to the printing platform. The ejector projection will abut the print pattern during movement, thereby applying a certain force to the print pattern to disengage the print pattern from the printing platform. In addition, because the inclined plane is further arranged on the demolding bulge, when the demolding bulge continuously moves relative to the printing platform, the inclined plane moves relative to the printing model and applies acting force to the printing model to enable the printing model to be separated from the printing platform, and in the moving process of the demolding bulge, the contact of the inclined plane and the printing model can effectively reduce the damage to the printing model, so that the printing model is prevented from being damaged by the demolding part in the demolding process, and the printing quality of the printing model is better ensured.

Description

Shedder and 3D printer

Technical Field

The invention relates to the technical field of 3D printing, in particular to a demolding device and a 3D printer.

Background

3D printing is one of the technologies of rapid prototyping, and a printing model is constructed on a printing platform by adopting special materials and printing layer by layer on the basis of a digital model. The printing model stuck on the printing platform needs to be separated from the printing platform after the 3D printing is completed. There are two methods commonly used at present, the first is manual separation, i.e. using a tool (such as a shovel or the like) to separate the printed piece from the printing platform, and the method has the disadvantages of low efficiency and easy damage to the printed piece. The second method is to open a hole on the printing platform, and set a movable thimble below the printing platform, after the printing of the printing model is finished, the printing platform and the thimble will move relatively, and the thimble will apply an acting force to the printing model to separate from the printing platform. This method has the following disadvantages: 1. meanwhile, a plurality of printing pieces are separated, so that the stress is large, and the requirement on the output power of the motor is high; 2. the relative movement of the thimble and the printing platform requires a certain space in the vertical direction, and the printing platform is provided with a printing model, so that the thimble only occupies the space of a material groove below the printing platform, and the thimble is required to be placed at the bottom of the material groove and has a certain height; 3. printing residues on the printing platform cannot be automatically cleared, and manual treatment is still required.

Therefore, a mold release device and a 3D printer are needed to solve the above problems.

Disclosure of Invention

The invention aims to provide a demoulding device and a 3D printer, which can improve the separation efficiency of a printing model and improve the printing efficiency and the printing quality.

In order to achieve the technical effects, the technical scheme of the invention is as follows:

a demolding device, comprising: a printing platform; the demolding part is movably arranged on the printing platform, one end of the demolding part is provided with a plurality of demolding protrusions, the demolding protrusions are provided with inclined planes, and the inclined planes are obliquely arranged in the direction departing from the demolding part and towards the direction close to the printing platform. The demoulding bulge can realize reliable separation of the printing model, and the contact of the inclined plane and the printing model can effectively reduce the damage to the printing model, thereby preventing the demoulding part from damaging the printing model in the demoulding process and better ensuring the printing quality of the printing model.

Furthermore, a plurality of guide grooves distributed at intervals are formed in the printing platform, and each demolding bulge can be matched in one guide groove. Because set up a plurality of guide slots on print platform, resin can be fast and abundant get into print platform middle part via a plurality of guide slots to effectively improve the inside printing quality of printing the model. In addition, the guide groove can also play a role in guiding the movement of the demolding bulge, and the demolding effect is further improved.

Further, print platform includes a supporting bench and a shaping platform, the shaping platform is established on the supporting bench, it is a plurality of the guide slot is all seted up in on the shaping platform. The supporting table can provide stable support for the forming table, so that the printing platform is guaranteed to have good strength and height after the guide groove is formed in the printing platform, and the service life of the printing platform is guaranteed.

Further, the printing platform is further provided with a plurality of through holes penetrating along the thickness direction of the printing platform, and the through holes and the guide grooves are distributed in a staggered mode. The resin can be by each position of the direct infiltration shaping platform of through-hole, especially can permeate the middle part of shaping platform fast, further prevents that partial region lacks the resin and influences the shaping of printing the model on the shaping platform to can effectively improve the inside printing quality of printing the model.

Further, gaps are respectively reserved between the two opposite side walls of the demolding bulge and the two opposite inner walls of the guide groove. The demoulding bulge can be well ensured not to interfere with the inner wall of the guide groove in the moving process, so that the stable reciprocating operation of the demoulding piece on the printing platform is well ensured, and the stability of the demoulding device in the automatic operation process is improved.

Furthermore, the demolding part further comprises a body, the demolding protrusions are arranged at one end of the body, the end face of the demolding protrusion, formed by the end face of the body, of the demolding protrusion is a cleaning face, the cleaning face and the working face of the printing platform are arranged at an included angle, and the cleaning face can clean residues generated in demolding. When the relative print platform of drawing of patterns piece moved, the body also can move thereupon, and it moves after the drawing of patterns is protruding to can clear up the residue that the protruding drawing of patterns in-process produced, can clear up the residue on the print platform after printing the model and breaking away from print platform, and bring the residue to the collection structure in, thereby reduce the residue clearance degree of difficulty, prevent that the residue from influencing the next time and printing the shaping, not only improved shedder's automation, still improved whole printing efficiency.

Further, when the demolding bulge abuts against the printing platform, a gap is formed between the bottom wall of the body and the top wall of the printing platform. The stable reciprocating operation of the demoulding part on the printing platform can be well ensured, and the stability of the demoulding device in automatic operation is improved.

Furthermore, the demolding device further comprises a first driving mechanism, the output end of the first driving mechanism is connected with the demolding part, and the first driving mechanism is used for driving the demolding part to move relative to the printing platform. The automatic separation of the printing model and the printing platform can be realized through the first driving mechanism, so that the overall printing efficiency of the printing model is improved.

Further, the first drive mechanism includes: a drive member; and one end of the transmission assembly is connected with the output end of the driving piece, and the other end of the transmission assembly is respectively connected to two ends of the demoulding piece. Because the both ends of drive assembly are connected with the both ends of drawing of patterns piece respectively to can guarantee better through a driving piece that the both ends synchronous motion of drawing of patterns piece, exert the effort to printing the model in order to improve drawing of patterns piece whole synchronization, thereby guarantee that drawing of patterns piece is even to the power of printing the model, and then improve the drawing of patterns effect of printing the model.

A 3D printer, comprising: a support frame; in the demolding device, the printing platform of the demolding device is movably arranged on the support frame along the vertical direction, and the demolding part of the demolding device and the first driving mechanism are arranged on the support frame.

The invention has the beneficial effects that: after the model shaping on print platform finishes, drawing of patterns piece can move print platform relatively, the drawing of patterns arch can make print model and print platform separation when print platform top slides, and simultaneously, because take off the module and can set up on print platform, structural at partial 3D printer, the print platform below is equipped with the silo of depositing the printing resin usually, make drawing of patterns piece need not occupy print platform's below space, thereby it is compacter when guaranteeing shedder and silo assembly, make it can not cause the influence to 3D printer's structural configuration and function. In addition, the demolding bulge abuts against the printing model in the moving process, and then certain acting force is applied to the printing model, so that the printing model is separated from the printing platform. In addition, because the demoulding bulge is also provided with the inclined plane, when the demoulding bulge continuously moves relative to the printing platform, the inclined plane moves relative to the printing model and applies acting force to the printing model to enable the printing model to gradually move from the lowest end of the inclined plane to the topmost end of the inclined plane so as to be separated from the printing platform. Due to the adoption of the demoulding device, the 3D printer can improve the separation efficiency of the printing model, and improve the printing efficiency and the printing quality.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic structural view of a demolding device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a printing platform and a stripping element according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the internal structure of the printing platform and the stripper provided by the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a 3D printer according to an embodiment of the present invention.

Reference numerals

1. A printing platform; 11. a guide groove; 12. a bearing table; 13. a forming table; 14. a through hole;

2. demoulding parts; 21. a body; 211. cleaning the noodles; 22. demolding bulges; 221. a bevel;

31. a drive member; 32. a driving module; 321. a guide rail; 322. a guide block; 323. driving a lead screw; 324. connecting blocks; 33. a transmission member; 331. a driving wheel; 332. a transmission belt;

4. a support frame; 41. a support table; 42. a column;

5. a second drive mechanism; 6. a trough; 7. an optical machine; 8. a recovery tank.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

It will be understood that the terms "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be construed as limiting the invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example 1

A specific structure of the demolding device according to the embodiment of the present invention is described with reference to fig. 1 to 3.

An embodiment of a stripping device as shown in fig. 1 comprises a printing platform 1 and a stripper 2. The demolding part 2 is movably arranged on the printing platform 1, one end of the demolding part 2 is provided with a plurality of demolding protrusions 22, the demolding protrusions 22 are provided with inclined surfaces 221, and the inclined surfaces 221 are obliquely arranged in the direction departing from the demolding part 2 and towards the direction approaching to the printing platform 1.

After the model shaping on print platform 1 finishes, drawing of patterns piece 2 can move print platform 1 relatively, drawing of patterns arch 22 can make print model and print platform 1 separation when sliding in print platform 1 top, and simultaneously, because drawing of patterns piece 2 can set up on print platform 1, structural at partial 3D printer, print platform 1 below is equipped with silo 6 of depositing printing resin usually, it is compacter when guaranteeing shedder and 6 assembles of silo, make it can not lead to the fact the influence to the structural configuration and the function of 3D printer.

Furthermore, the ejector protrusions 22 will abut the printing mould during movement, thereby exerting a certain force on the printing mould to disengage the printing mould from the printing platform 1. In addition, because the inclined plane 221 is further arranged on the demolding bulge 22, when the demolding bulge 22 continuously moves relative to the printing platform 1, the inclined plane 221 moves relative to the printing model and applies acting force to the printing model to enable the printing model to gradually move from the lowest end of the inclined plane 221 to the topmost end of the inclined plane 221 so as to be separated from the printing platform 1, and in the moving process of the demolding bulge 22, the contact between the inclined plane 221 and the printing model can effectively reduce the damage to the printing model, so that the demolding part 2 is prevented from damaging the printing model in the demolding process, and the printing quality of the printing model is better ensured.

In the present embodiment, as shown in fig. 1 to fig. 3, the printing platform 1 is provided with a plurality of guide grooves 11 distributed at intervals, and each demolding protrusion 22 can be fitted in one of the guide grooves 11.

Present print platform 1 sets up to dull and stereotyped structure usually, and its profiled surface is the horizontal plane, and at the fashioned 3D of liquid resin printing in-process, the resin that is located silo 6 is difficult autonomous flow to print platform 1's middle part position usually for print platform 1's middle part resin is less relatively, and causes the inside relatively poor problem of printing quality of printing the model. In this embodiment, since the plurality of guide grooves 11 are provided on the printing platform 1, the resin can quickly and sufficiently enter the middle of the printing platform 1 through the plurality of guide grooves 11, thereby effectively improving the internal printing quality of the printing model. In addition, the guide groove 11 can also play a role in guiding the movement of the demolding bulge 22, and the demolding effect is further improved.

In this embodiment, as shown in fig. 3, the inclined surface 221 extends into the guide groove 11, so that the inclined surface 221 can further ensure that the demolding protrusion 22 contacts with the printing mold during demolding, thereby further reducing damage of the demolding protrusion 22 to the printing mold and improving the printing quality of the printing mold.

In the present embodiment, as shown in fig. 1 and fig. 2, the printing platform 1 includes a bearing platform 12 and a forming platform 13, the forming platform 13 is disposed on the bearing platform 12, and the plurality of guide grooves 11 are all opened on the forming platform 13.

The plummer 12 can provide firm support to the forming table 13 to ensure that the printing platform 1 still has better intensity and height after being provided with the guide slot 11, thereby ensuring the service life of the printing platform 1.

In addition, in the present embodiment, as shown in fig. 1, the cross-sectional area of the bearing table 12 is larger than that of the forming table 13, so that the supporting effect of the bearing table 13 and the stripper 2 can be ensured. In this embodiment, the bearing table 12 and the forming table 13 may be an integrally formed part, or may be formed by assembling and connecting two structures, and need not be limited in particular.

In this embodiment, as shown in fig. 1 to fig. 3, the printing platform 1 is further provided with a plurality of through holes 14 penetrating along the thickness direction of the printing platform 1, and the through holes 14 and the guide grooves 11 are distributed in a staggered manner.

When print platform 1 soaks in the resin of silo 6, the resin can be by each position of 14 direct infiltration forming platform of through-hole, especially can infiltrate the middle part of forming platform fast to can further improve the efficiency that the resin got into forming platform middle part, further prevent that partial region lacks the resin and influence the shaping of printing the model on the forming platform, thereby can effectively improve the inside printing quality of printing the model. In addition, the through holes 14 and the guide grooves 11 are distributed in a staggered mode, so that the problem of interference between the demolding bulges 22 and resin in the through holes 14 in the moving process can be solved, and the independent action of the demolding bulges and the resin is well guaranteed.

Specifically, in the present embodiment, the through hole 14 penetrates through the carrier stage 12 and the molding stage 13.

In the present embodiment, as shown in fig. 1 to 3, the two side walls of the ejector protrusion 22 and the two inner walls of the guide groove 11 have gaps therebetween, respectively.

The clearance is reserved between the demoulding protrusion 22 and the guide groove 11, so that the problem that the demoulding protrusion 22 cannot interfere with the inner wall of the guide groove 11 in the moving process can be well solved, the stable reciprocating operation of the demoulding part 2 on the printing platform 1 is well guaranteed, and the stability of the demoulding device in automatic operation is improved.

In this embodiment, as shown in fig. 1 to fig. 3, the demolding part 2 further includes a main body 21, a plurality of demolding protrusions 22 are disposed on one end of the main body 21, an end surface of the main body 21 on which the demolding protrusions 22 are disposed is formed as a cleaning surface 211, the cleaning surface 211 is disposed at an angle with respect to the working surface of the printing platform 1, and the cleaning surface 211 can clean residues generated during demolding.

When taking off the relative print platform 1 motion of mould 2, body 21 also can move thereupon, and it moves behind drawing of patterns arch 22, thereby can make the residue that produces of the protruding 22 drawing of patterns of clearance face 211 clearance drawing of patterns, can clear up the residue on the print platform 1 after printing the model and breaking away from print platform 1, and take the residue to the collection structure in, thereby reduce the residue clearance degree of difficulty, prevent that the residue from influencing the next time and printing the shaping, the automation of shedder has not only been improved, whole printing efficiency has still been improved.

In the present embodiment, as shown in fig. 1 to 3, the cleaning surface 211 is perpendicular to the working surface of the printing platform 1. When the contained angle of clearance face 211 and print platform 1's working face was the acute angle, easily leaded to the difficult discharge of residue, when the contained angle of clearance face 211 and print platform 1's working face was the obtuse angle, easily leaded to the residue propelling movement to the roof of body 21 on. From this, make clearance face 211 perpendicular to print platform 1's working face, can effectively reduce the residue and deviate from by the clearance between clearance face 211 and the working face to better guarantee the clearance effect of clearance face 211.

In the present embodiment, as shown in fig. 3, when the demolding protrusion 22 abuts against the printing platform 1, a gap is formed between the bottom wall of the body 21 and the top wall of the printing platform 1.

Because a gap is formed between the bottom wall of the body 21 and the top wall of the printing platform 1, in the movement process of the demoulding protrusion 22, no friction is generated between the body 21 and the printing platform 1, so that the stable reciprocating operation of the demoulding part 2 on the printing platform 1 is better ensured, and the stability of the demoulding device in automatic operation is improved.

In this embodiment, as shown in fig. 1, the demolding device further includes a first driving mechanism, an output end of the first driving mechanism is connected with the demolding member 2, and the first driving mechanism is used for driving the demolding member 2 to move relative to the printing platform 1.

The automatic separation of the printing model and the printing platform 1 can be realized through the first driving mechanism, so that the overall printing efficiency of the printing model is improved.

In this embodiment, as shown in fig. 1, the first driving mechanism includes a driving member 31 and a transmission assembly. One end of the transmission assembly is connected with the output end of the driving piece 31, and the other end of the transmission assembly is respectively connected with two ends of the demoulding piece 2.

Because the two ends of the transmission component are respectively connected with the two ends of the demoulding part 2, the synchronous movement of the two ends of the demoulding part 2 can be better ensured through the driving part 31, so that the acting force exerted on the printing model by the demoulding part 2 in an integral and synchronous manner is improved, the force exerted on the printing model by the demoulding part 2 is ensured to be uniform, and the demoulding effect of the printing model is further improved.

Of course, in other embodiments of the invention, the drive element 31 can also be connected directly to the end of the stripper element 2, so that the drive of the stripper element 2 is effected exclusively by the drive element 31. In addition, the driving member 31 may be provided as a motor screw, an air cylinder, an electric push rod, or the like.

In the present embodiment, as shown in fig. 1, the transmission assembly includes two driving modules 32 and a transmission member 33 which are spaced apart from each other. The output ends of the two driving modules 32 are respectively connected with the two ends of the demoulding member 2, the two driving modules 32 are connected through the transmission member 33, and one driving module 32 is connected with the output end of the driving member 31.

The two driving modules 32 are connected through the transmission member 33, so that the driving member 31 can realize synchronous movement of the two driving modules 32 by driving one driving module 32 to move, thereby reducing the cost of the first driving mechanism. In addition, two drive module 32 intervals set up and can also avoid first actuating mechanism and 3D printer's other structures to appear interfering the problem for shedder has better suitability.

In this embodiment, the driving module 32 may be configured as a lead screw module, or may be configured as two air cylinders. Of course, in other embodiments of the present invention, the first driving mechanism may also be configured as two linear modules arranged at an interval, and the output ends of the two linear modules are respectively connected to the two ends of the demolding member 2, so as to achieve a more accurate and reliable driving effect.

In the present embodiment, as shown in fig. 1, the driving module 32 includes a guide rail 321 and a driving screw 323. The guide rail 321 is provided with a guide block 322. The output end of the driving screw 323 is connected with a connecting block 324, and the connecting block 324 is connected with the guide block 322 and the demoulding member 2.

The guide rail 321 can play a good guiding effect on the movement of the guide block 322, and then play a guiding effect on the connecting block 324 connected with the guide block 322 and the demoulding part 2, so that the demoulding protrusion 22 is prevented from moving along other directions and colliding with the guide groove 11, the reliable movement of the demoulding part 2 in the demoulding process is well ensured, and the demoulding effect is improved.

In this embodiment, as shown in fig. 1, the transmission member 33 includes two transmission wheels 331 and a transmission belt 332. The two driving wheels 331 are respectively disposed on the two driving modules 32. The belt 332 is wound around two driving wheels 331.

The transmission belt 332 and the transmission wheel 331 can better realize the power transmission effect, so that the two driving modules 32 can be better ensured to synchronously rotate, the two ends of the demoulding part 2 can be ensured to synchronously move, and the demoulding effect of the demoulding part 2 is improved. Of course, in other embodiments of the present invention, the transmission member 33 can also be formed as a gear transmission structure, and the specific structure of the transmission member 33 can be determined according to actual requirements without specific limitations.

In the present embodiment, as shown in fig. 1 to 3, the printing platform 1 has a rectangular cross section, and the guide groove 11 extends along the length direction or the width direction of the printing platform 1.

The printing platform 1 of rectangle can improve shedder's integrated level, is convenient for reduce 3D printer's area. Meanwhile, the guide groove 11 extends along the length direction or the width direction of the printing platform 1, so that the driving direction of the first driving mechanism is also the length direction or the width direction of the printing platform 1, the operation range of the demoulding part 2 and the first driving mechanism can be reduced, the floor area of the 3D printer is further increased, and the application range of the printer is widened.

Example 2

As shown in fig. 4, the invention also discloses a 3D printer, which comprises a support frame 4 and a demoulding device. The printing platform 1 of the demoulding device is movably arranged on the support frame 4 along the vertical direction, and the demoulding part 2 and the first driving mechanism of the demoulding device are arranged on the support frame 4. The mold release device described in embodiment 1 has the advantages described in embodiment 1. The 3D printer of this embodiment can improve the separation efficiency of printing the model promptly, improves printing efficiency and printing quality.

In this embodiment, as shown in fig. 4, the 3D printer further includes a second driving mechanism 5, the second driving mechanism 5 is disposed on the supporting frame 4, and the second driving mechanism 5 is configured to drive the printing platform 1 to move in the vertical direction.

The second driving mechanism 5 can realize the movement of the printing platform 1 in the vertical direction, thereby facilitating the layer-by-layer resin curing on the printing platform 1 to form a printing model.

In this embodiment, as shown in fig. 4, a recovery groove 8 is further disposed on the supporting frame 4, and the recovery groove 8 is disposed corresponding to an end portion of the printing platform 1. When the demoulding part 2 moves on the printing platform 1 and finishes demoulding, the cleaning surface 211 on the body 21 of the demoulding part 2 can push the residues into the recovery tank 8, so that the residues are automatically recovered, and the cleaning frequency is effectively reduced.

In the present embodiment, as shown in fig. 4, the support frame 4 includes a support table 41 and a column 42. A trough 6 is arranged in the supporting platform 41, the first driving mechanism is arranged on the supporting platform 41, and the demoulding member 2 is movably arranged on the supporting platform 41 along the width direction of the supporting platform 41. The column 42 is provided on the support table 41, and the second drive mechanism 5 is provided on the column 42.

The supporting table 41 can be convenient for supporting the demolding device, the trough 6 and other structures, and the stand column 42 can be convenient for supporting the second driving mechanism 5, so that the second driving mechanism 5 drives the printing platform 1 to move in the vertical direction, and the printing process of the printing model is realized.

Specifically, in this embodiment, as shown in fig. 4, the 3D printer further includes an optical machine 7 and a hopper 6. The trough 6 is arranged below the printing platform 1 and used for storing resin, and the optical machine 7 is arranged on the upright post 42 and used for curing the resin in the trough 6.

The printing process of the 3D printer of the present embodiment is as follows:

s1, driving the printing platform 1 to move to the initial position by the second driving mechanism 5;

s2, exposing by the light machine 7 and molding the resin on the printing platform 1;

s3, after the layer of printing model is formed, the second driving mechanism 5 drives the printing platform 1 to move downwards for a preset distance, and then the optical machine 7 continues to expose;

s4, circulating S1-S3 to finish the whole printing of the printing model;

s5, the second driving mechanism 5 drives the printing platform 1 to move to a set position, the first driving mechanism drives the demolding part 2 to move, the inclined surface 221 is in contact with the printing model and applies acting force to the printing model in the moving process of the demolding bulge 22, the printing model is separated from the printing platform 1 row by row, the body 21 cleans printing residues on the printing platform 1, and after the printing model is separated from the printing platform 1, the first driving mechanism drives the demolding part 2 to return.

In the description herein, references to the description of "some embodiments," "other embodiments," or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A demolding device, characterized by comprising:

a printing platform (1);

the demolding part (2) is movably arranged on the printing platform (1), one end of the demolding part (2) is provided with a plurality of demolding protrusions (22), each demolding protrusion (22) is provided with an inclined surface (221), and the inclined surfaces (221) are obliquely arranged in the direction departing from the demolding part (2) and towards the direction approaching the printing platform (1).

2. Demoulding device according to claim 1, wherein the printing platform (1) is provided with a plurality of guide slots (11) distributed at intervals, each demoulding projection (22) being able to fit into one of the guide slots (11).

3. Demoulding device according to claim 2, wherein the printing platform (1) comprises a carrying table (12) and a forming table (13), the forming table (13) being provided on the carrying table (12), the plurality of guide slots (11) each opening on the forming table (13).

4. The demolding device according to claim 2, wherein the printing platform (1) is further provided with a plurality of through holes (14) penetrating along the thickness direction of the printing platform (1), and the through holes (14) and the guide grooves (11) are distributed in a staggered manner.

5. A stripping device as claimed in claim 2, characterized in that the two oppositely disposed side walls of the stripping projection (22) and the two oppositely disposed inner walls of the guide groove (11) each have a gap therebetween.

6. The demolding device as claimed in claim 1, wherein the demolding part (2) further comprises a body (21), a plurality of demolding protrusions (22) are arranged on one end of the body (21), the end face, provided with the demolding protrusions (22), of the body (21) is formed into a cleaning face (211), the cleaning face (211) is arranged at an included angle with the working face of the printing platform (1), and the cleaning face (211) can clean residues generated during demolding.

7. Demoulding device according to claim 6, wherein when the demoulding projection (22) abuts the printing platform (1), there is a gap between the bottom wall of the body (21) and the top wall of the printing platform (1).

8. The stripping device as claimed in claim 1, characterized in that it further comprises a first drive mechanism, the output of which is connected to the stripping element (2), for driving the stripping element (2) in movement relative to the printing platform (1).

9. The demolding device as claimed in claim 8, wherein the first drive mechanism includes:

a drive member (31);

and one end of the transmission assembly is connected with the output end of the driving piece (31), and the other end of the transmission assembly is respectively connected with two ends of the demoulding piece (2).

10. A3D printer, comprising:

a support frame (4);

a stripping device as claimed in any one of claims 1 to 9, the printing platform (1) of the stripping device being arranged on the support (4) movably in the vertical direction, the stripping element (2) and the first drive mechanism of the stripping device being arranged on the support (4).