CN210911179U

CN210911179U - 3D printer founds reinforcing apparatus that platform was used to prevent to print model first layer deformation

Info

Publication number: CN210911179U
Application number: CN201921749814.XU
Authority: CN
Inventors: 王粤吉
Original assignee: Changchun Laibao Technology Co ltd
Current assignee: Changchun Laibao Technology Co ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-07-03
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses a 3D printer founds reinforcing apparatus that first layer deformation of model was prevented with preventing to print platform, including print platform, print platform's four sides are provided with four rectangle slots that are used for installing print platform, print platform's upper surface is the printing region, and the printing region is connected with the printing model after printing, and the last fixed screw hole site that evenly is provided with except that printing region central point puts, and fixed screw hole site threaded connection has the embedded screw, and the printing region evenly is provided with the ladder lockhole of molten material; print the model evenly be provided with the preforming that is used for the fixed edge of printing the model all around, the one end of preforming is provided with gasket and print platform contact, the other end of preforming and the edge contact of printing the model, is provided with square card hole on the preforming, pre-buried screw run through the card hole and with fixed screw hole site threaded connection. Through the setting, the device can prevent to print the model and print the shrink in the first floor and stick up the production of limit condition, can be to the reinforced device of impression type first floor.

Description

3D printer founds reinforcing apparatus that platform was used to prevent to print model first layer deformation

Technical Field

The utility model relates to a 3D prints the field, specifically is 3D printer founds platform with preventing to print reinforcing apparatus of model first layer deformation.

Background

The problem that sticks up the limit and is the universal emergence in 3D printing process, this is because the principle of printing material expend with heat and contract with cold for the bottom surface edge of model and print platform contact perks more easily, breaks away from the condition of platform even, and light person influences the printing effect, causes the model bottom to warp, and heavy person can lead to printing the failure. The reason for the formation of the raised edge is as follows: when printing consumables are heated in an extruder they have a tendency to expand, once in a molten state, the plastic deposits layer by layer on the build platform, and when the molten plastic cools to solidify, it also contracts, and when printing a part, the first few layers begin to cool and begin to contract after printing, causing it to flake off of the build platform, which in turn causes a cocked edge condition.

At present, 3D printing platform for preventing edge warping on the market mostly adopts beautiful line paper (blue adhesive tape) sticking to increase friction, gold finger double faced adhesive tape sticking to increase adhesion, hole printing platform and the like, but the effect is not ideal for large-scale printing model, the beautiful line paper sticking to adhesion is still limited for large model, and is very easy to damage when taking the model, when sticking beautiful line paper, the surface sticking of printing platform must be guaranteed to be smooth, otherwise, the model is easy to incline and deviate. Although the adhesive force of the gold-pasted finger double-sided adhesive tape is improved to some extent, the position which is not covered by the printing model can be fallen with dust to cause the reduction of the surface viscosity, so that the double-sided adhesive tape is not easy to replace, and when the double-sided adhesive tape is taken down, the printing platform is easy to leave residual adhesive tape and is difficult to clean. Hole print platform is another kind of similar to the print platform of hole board, evenly is covered with the aperture, can effectively increase the adhesive force of model, when the first layer of model was printed, has partly printed material to enter into the aperture to accomplish the effect that increases area of contact. However, the through holes are adopted by the printing platform on the market at present, the shrinkage force of the printing material in the horizontal direction of the printing platform is overcome, the tension force applied to the material in the vertical direction is not fundamentally solved, and when a large and high model is printed, the periphery of the model can be subjected to the very strong shrinkage force obliquely above, so that the material entering the through holes is pulled out to cause the edge warping of the model.

As can be seen from the above, solving the problem of edge lifting has a profound impact on the development of the 3d printing industry as a whole.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a 3D printer founds platform with preventing to print reinforcing apparatus of model first layer deformation, and it can prevent to print the model and print the production that the shrink sticks up the limit condition on the first layer, can be to the reinforced device of impression type first layer.

In order to achieve the above object, the utility model provides a following technical scheme: the reinforcing device for preventing the first layer of the printing model from deforming for the 3D printer construction platform comprises a printing platform with a square cross section and a certain thickness, four side edges of the printing platform are provided with four rectangular grooves for mounting the printing platform, the upper surface of the printing platform is a printing area, the printing area is connected with the printing model after printing, the printing model comprises a bottom plate, fixing screw hole positions are uniformly arranged on the printing platform except the center of the printing area, the fixing screw hole positions are in threaded connection with embedded screws, the printing area is uniformly provided with molten material stepped locking holes, and the diameters of the molten material stepped locking holes are increased from bottom to bottom in the direction perpendicular to the printing platform; the printing model is characterized in that pressing sheets for fixing the base plate are uniformly arranged on the periphery of the printing model, a gasket is arranged at one end of each pressing sheet and is in contact with the printing platform, the other end of each pressing sheet is in contact with the base plate, square clamping holes are formed in the pressing sheets, and the embedded screws penetrate through the clamping holes and are in threaded connection with the fixing screw hole positions.

By the technical scheme, the printing platform can be firmly and conveniently installed on the required 3D printer construction platform by arranging the rectangular groove; the embedded screws are used, so that the printing area is an integral plane under the condition that the embedded screws are not used, therefore, a printing model meeting the size can be printed in the printing area, and the embedded screws do not protrude out of the plane and interfere with the printing model; the arrangement of the stepped locking hole for the molten material can increase the contact area between the material and the printing platform, so that the friction force is increased, the heat dissipation is facilitated, meanwhile, the molten material is similar to a nail after being cooled in the stepped locking hole for the molten material, and the material cannot be separated from the stepped locking hole for the molten material, so that the effects of fixing and preventing warping are achieved; after setting up the preforming, because the existence of gasket, gasket and preforming have formed a simple lever, and when screwing up pre-buried screw, pre-buried screw compresses tightly the preforming, and the other end of preforming and the edge contact of bottom plate, consequently the limit has accomplished the fixed to the bottom plate under the effect of preforming, and the settlement in card hole makes us can select the pre-buried screw that is in suitable position to use simultaneously, also can select the preforming to press position and the area at the bottom plate simultaneously.

Preferably, the stepped locking holes of the molten material are arranged in a hexagonal centrosymmetric manner around the fixing screw hole site.

Through above-mentioned technical scheme, so arrange make arrange can be inseparabler, also be favorable to the melting material to enter into the melting material ladder lockhole simultaneously and dispel the heat, consequently the solidification that the melting material can be faster to play the effect of "nail" after solidifying, thereby better play fixed and prevent the effect of sticking up the limit.

Preferably, the fixing screw hole sites are uniformly distributed in a lattice network.

By adopting the technical scheme, the distribution mode is adopted, so that the positioning and the manufacturing of the hole positions of the fixing screws are easier and more accurate during manufacturing. Meanwhile, a proper fixing screw hole position and pressing sheet matched fixing bottom plate can be found for printing models with different sizes.

Preferably, the fixing screw holes are uniformly distributed in a circular ring shape with the center of the printing area as the center.

Through above-mentioned technical scheme, adopt ring shape distribution mode, can be more even in the in-process that uses the preforming to exert pressure to the bottom plate.

Preferably, the molten material stepped locking hole comprises a plurality of steps.

Through above-mentioned technical scheme, set up a plurality of ladders and can increase frictional force, simultaneously with a plurality of steps joint after the molten material cools off, a plurality of steps can provide bigger pulling force to the bottom plate under the condition of same material, and then play and prevent the effect on sticking up the limit

Preferably, the molten material stepped locking hole includes a first step, a second step, and a third step, and the first step, the second step, and the third step are distributed from top to bottom and gradually increase in diameter.

Through above-mentioned technical scheme, the melting material joint after first ladder, second ladder and third ladder and the cooling solidification provides bigger pulling force to the bottom plate, to the fixed of bottom plate with prevent to stick up the limit, all have good effect.

Preferably, the contact part of the pressing sheet and the bottom plate is in a rectangular or fan-ring shape arranged in a T shape with the pressing sheet.

Through above-mentioned technical scheme, the rectangle that uses T shape to set up or fan ring shape are as the contact site of preforming and bottom plate, can increase the area of contact of preforming and bottom plate to make unit area's pressure reduce, therefore, make the preforming more even to the pressure of whole bottom plate, be favorable to preventing the production of the limit phenomenon of sticking up.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) due to the existence of the stepped locking hole of the molten material, when the first layer of the model is printed, a part of the printed material enters the stepped locking hole of the molten material, and the stepped locking hole is arranged, even a plurality of steps are arranged, so that the contact area is increased, and the solidified material generates an effect similar to a nail through the clamping effect with the steps, so that the printing model is fixed on a printing platform, and the shrinkage and edge warping are prevented;

(2) set up the preforming, further fix the first floor bottom plate of printing the model externally for print the model and hug closely on print platform, thereby avoid the shrink to stick up the production of limit condition, simultaneously preforming and pre-buried screw have the effectual advantage of easy operation.

Drawings

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

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of the stepped keyhole distribution structure of the molten material of the present invention;

FIG. 4 is a schematic sectional view of the stepped lock hole and the hole site of the fixing screw of the present invention;

FIG. 5 is a schematic view of the use structure of the tablet of the present invention;

fig. 6 is a schematic diagram of the other forms of the tablet structure of the present invention.

In the figure: 1. a printing platform; 2. a rectangular groove; 3. a printing area; 4. printing the model; 5. fixing screw hole positions; 6. pre-burying a screw; 7. a molten material stepped keyhole; 8. a base plate; 9. tabletting; 10. a clamping hole; 11. a first step; 12. a second step; 13. a third step; 14. and (7) a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides an embodiment:

3D printer founds reinforcing apparatus that first layer deformation of model was prevented with preventing to platform for "melting is piled up forming type (FDM)" 3D printer and is founded the platform, including the cross-section for the square and have certain thickness print platform 1, print platform 1's four sides are provided with four rectangle slots 2, and rectangle slot 2 is used for the long tail to press from both sides and makes it fixed with printer construction platform, and then makes print platform 1 and printer construction platform organic connection.

Print platform 1's upper surface is printing region 3, and printing region 3 is connected with printing model 4 after printing, evenly is provided with fixed screw hole site 5 except that printing region 3 central point puts on print platform 1, and fixed screw hole site 5 threaded connection has embedded screw 6, and printing region 3 evenly is provided with melting material ladder lockhole 7. With embedded screw 6 pre-buried to fixed screw hole site 5, so set up, when need not using embedded screw 6, whole printing area is a plane, has consequently ensured the relatively big printing model 4 of printable, can not be because embedded screw 6 highlights printing area's plane, has restricted printing area 3's space size.

The stepped locking holes 7 of the molten material are arranged in a hexagonal centrosymmetric pattern around the fixing screw hole sites 5. So arrange make the range can be inseparabler, also be favorable to the melting material to enter into melting material ladder lockhole 7 simultaneously and dispel the heat, consequently melting material can be faster solidify to play the effect of "nail" after solidifying, thereby better play fixed and prevent the effect on stick up the limit.

The molten material stepped locking hole 7 here includes a first step 11, a second step 12, and a third step 13, while the first step 11, the second step 12, and the third step 13 are distributed from top to bottom and gradually increase in diameter. Because the existence of melting material ladder lockhole 7, when the model first floor was printed, some printing material entered into melting material ladder lockhole 7, because this hole adopts cascaded setting, has set up a plurality of ladders even, has not only increased area of contact, and the material after solidifying produces the effect of similar "nail" through the joint effect with the ladder to make printing model 4 fixed to print platform 1 on, prevent that the shrink from sticking up the limit.

Print model 4 evenly be provided with the preforming 9 that is used for the fixed edge of printing model 4 all around, the one end of preforming 9 is provided with gasket 14 and print platform 1 contact, and the other end of preforming 9 and the edge contact of printing model 4's bottom plate 8 are provided with square card hole 10 on the preforming 9, and pre-buried screw 6 runs through

card hole

10 and 5 threaded connection in fixed screw hole site. After setting up preforming 9, because the existence of gasket 14, gasket 14 and preforming 9 have formed a simple lever, when screwing up buried screw 6 in advance, buried screw 6 compresses tightly preforming 9, and the other end of preforming 9 and bottom plate 8's edge contact, therefore the limit has accomplished the fixed to bottom plate 8 under the effect of preforming 9, and the settlement in card hole 10 makes us can select buried screw 6 that is in the suitable position to use simultaneously, also can select preforming 9 to press position and the area at bottom plate 8 simultaneously. Four preforming 9 have been used in this embodiment, and four preforming 9 evenly distributed are around printing model 4, because four preforming 9 compress tightly bottom plate 8 on print platform 1's surface, consequently can be with the fine fixed of bottom plate 8, prevent to produce the limit phenomenon of sticking up.

The fixing screw holes 5 are evenly distributed in a grid-like pattern in this embodiment. By adopting the distribution mode, the positioning and the manufacturing of the fixing screw hole positions 5 are easier and more accurate during the manufacturing. Meanwhile, a proper fixing screw hole position 5 and a pressing sheet 9 matched with the fixing bottom plate 8 can be found for printing models 4 with different sizes.

In addition, the fixing screw hole sites 5 may also be uniformly distributed in a circular ring shape with the center of the printing region 3 as the center. With this distribution, it is possible to more uniformly apply pressure to the base plate 8 using the pressing sheet 9.

In order to further make the pressing force of the pressing sheet 9 applied to the base plate 8 more uniform, as shown in fig. 6, the contact portion of the pressing sheet 9 with the printing mold 4 is shaped into a rectangular or fan-ring shape arranged in a T-shape with respect to the pressing sheet 9 by increasing the contact area of the pressing sheet 9 with the base plate 8. After the contact area of preforming and bottom plate increases for unit area's pressure reduces, therefore, makes the preforming more even to the pressure of whole bottom plate, can not crush the material, is favorable to preventing the production of the limit phenomenon of sticking up.

The working process is as follows: a, fixing the printer construction platform with a long tail clamp through a rectangular groove 2; b, preparing other preparation work, starting printing, enabling the molten material to enter the molten material stepped locking hole 7, cooling and solidifying, and enabling the solidified molten material to generate a pulling force for preventing the edge from being warped to the bottom plate 8; c, reinforcing the bottom plate 8 after the bottom plate 8 is printed for a while, uniformly using four pressing sheets 9, certainly adopting more pressing sheets 9, selecting and fixing the pressing sheets 9 by using the embedded screws 7 at proper positions, keeping the reinforcement of the bottom sheet 9 and preventing the edges from warping; d, continuing printing until the printing model 4 finishes printing.

In summary, the following steps:

(1) due to the existence of the molten material stepped locking hole 7, when the first layer of the model is printed, a part of the printing material enters the molten material stepped locking hole 7, the hole is arranged in a stepped manner, even a plurality of steps are arranged, so that the contact area is increased, the solidified material generates an effect similar to a nail through the clamping effect with the steps, and the printing model 4 is fixed on the printing platform 1 to prevent the edge from being shrunk and warped;

(2) set up preforming 9, further fix the first floor bottom plate 8 of printing model 4 externally for printing model 4 hugs closely on print platform 1, thereby avoids the shrink to stick up the production of limit condition, and preforming 9 and pre-buried screw 6 have the effectual advantage of easy operation simultaneously.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1.3D printer founds reinforcing apparatus that platform was used for preventing to print model first layer deformation, its characterized in that: the printing device comprises a printing platform (1) with a square cross section and a certain thickness, four rectangular grooves (2) used for mounting the printing platform (1) are formed in four side edges of the printing platform (1), a printing area (3) is formed in the upper surface of the printing platform (1), the printing area (3) is connected with a printing model (4) after printing, the printing model (4) comprises a bottom plate (8), fixed screw hole sites (5) are uniformly arranged on the printing platform (1) except the center of the printing area (3), embedded screws (6) are in threaded connection with the fixed screw hole sites (5), molten material stepped locking holes (7) are uniformly formed in the printing area (3), and the diameter of the molten material stepped locking holes (7) is increased from bottom to bottom in the direction perpendicular to the printing platform (1); the printing model is characterized in that pressing sheets (9) used for fixing the bottom plate (8) are uniformly arranged on the periphery of the printing model (4), a gasket (14) is arranged at one end of each pressing sheet (9) and is in contact with the printing platform (1), the other end of each pressing sheet (9) is in contact with the bottom plate (8), square clamping holes (10) are formed in the pressing sheets (9), and embedded screws (6) penetrate through the clamping holes (10) and are in threaded connection with the fixing screw hole positions (5).

2. The 3D printer build platform of claim 1 is with reinforcing apparatus that prevents print model first layer deformation, characterized in that: the stepped locking holes (7) of the molten material are arranged around the fixing screw hole site (5) in a hexagonal centrosymmetric manner.

3. The 3D printer build platform of claim 2 is with reinforcing apparatus that prevents print model first layer deformation, characterized in that: the fixing screw hole sites (5) are uniformly distributed in a grid shape.

4. The 3D printer build platform of claim 2 is with reinforcing apparatus that prevents print model first layer deformation, characterized in that: the fixing screw hole sites (5) are uniformly distributed in a circular ring shape by taking the center of the printing area (3) as the center.

5. The 3D printer build platform according to claim 3 or 4 is with reinforcing apparatus that prevents print model first layer deformation, characterized in that: the molten material stepped keyhole (7) includes a plurality of steps.

6. The 3D printer build platform of claim 5 with prevent printing model first layer reinforcing apparatus that warp, characterized in that: the molten material stepped locking hole (7) includes a first step (11), a second step (12), and a third step (13), while the first step (11), the second step (12), and the third step (13) are distributed from top to bottom and gradually increase in diameter.

7. The 3D printer build platform of claim 1 is with reinforcing apparatus that prevents print model first layer deformation, characterized in that: the contact part of the pressing sheet (9) and the bottom plate (8) is in a rectangular or fan-ring shape which is arranged in a T shape with the pressing sheet (9).