CN217258450U - Printer shedder, silo and 3D printer - Google Patents
Printer shedder, silo and 3D printer Download PDFInfo
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- CN217258450U CN217258450U CN202123269381.8U CN202123269381U CN217258450U CN 217258450 U CN217258450 U CN 217258450U CN 202123269381 U CN202123269381 U CN 202123269381U CN 217258450 U CN217258450 U CN 217258450U
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Abstract
The utility model discloses a printer shedder, silo and 3D printer mainly has the stripper plate of dodging the unit through the setting for local space has between stripper plate and the model, reduce the die drawing area, realize reducing drawing of patterns power, make the drawing of patterns smooth and easy, avoid damaging the model. The utility model discloses a main technical scheme does: a demolding device comprising a demolding plate for supporting a mold printed by the printer; the demoulding plate is provided with an avoiding unit which is used for forming a local gap between the demoulding plate and the model. The utility model discloses the drawing of patterns of mainly used model.
Description
Technical Field
The utility model relates to a 3D prints technical field, especially relates to a printer shedder, silo and 3D printer.
Background
A 3D printer is a machine that is an additive manufacturing technique, i.e., a rapid prototyping technique. The principle of the 3D printer is that data and raw materials are put into the 3D printer, and the machine can build the product layer by layer according to the program. Common 3D printers comprise a photocuring 3D printer and a nozzle spraying type 3D printer, wherein in the photocuring 3D printer, a material groove is used for containing resin and then is placed on a light source of the printer, a curing reaction occurs at the bottom of the material groove, after one layer is cured, a cured printing model is lifted upwards to be peeled from the bottom of the material groove, then the next layer of the model is continuously printed, and the three-dimensional printing is realized by layer-by-layer superposition; the printer of nozzle spraying formula prints in the continuous conveying shower nozzle of wire rod, and the shower nozzle moves along model cross section profile and filling orbit on print platform, extrudes the material simultaneously, and the material solidifies the bottommost layer that forms the model on print platform, and then the shower nozzle risees gradually and realizes the successive layer and print.
The existing model forming surfaces, such as a release film of a photocuring printer and a printing platform of a nozzle spraying type printer, have simple and smooth surfaces, so that vacuum is easily formed between the bottom surface of the model and the forming surface, the drawing area is large, the demoulding force is large when the model is separated from the forming surface, and the model or the forming surface is easily damaged.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a printer shedder, silo and 3D printer mainly has the stripper plate of dodging the unit through the setting for local space has between stripper plate and the model, reduces the drawing die area, realizes reducing the drawing die power, makes the drawing of patterns smooth and easy, avoids damaging the model.
In order to achieve the above object, the utility model mainly provides the following technical scheme:
on the one hand, the embodiment of the utility model provides a printer shedder, include:
the demoulding plate is used for supporting the mould printed by the printer;
the demoulding plate is provided with an avoiding unit which is used for forming a local gap between the demoulding plate and the model.
The number of the avoidance units is multiple, and the avoidance units are distributed on one side surface or two side surfaces of the stripper plate;
the avoidance units comprise a plurality of point-shaped recesses which are distributed on the demoulding plate; and/or the avoidance units comprise a plurality of strip-shaped depressions which are arranged in parallel or staggered; and/or the avoidance units comprise a plurality of point-shaped bulges which are distributed on the demoulding plate.
The thickness of the mold release plate is not less than 90 μm and not more than 110 μm.
The weight per unit area of the release sheet is 206.4g/m or more 2 And 223.6g/m or less 2 。
The tensile strength of the release sheet is 19.6MPa or more.
The elongation at break of the release sheet is 200% or more.
The thermal shrinkage of the stripper plate is not less than-5% and not more than + 5%.
The surface roughness of the release sheet is 0.5Ra or more and 2.5Ra or less.
On the other hand, the embodiment of the utility model also provides a silo of printer, including the shedder of any one of above-mentioned, and silo framework;
the stripper plate covers the first side opening of the trough frame body and is connected with the edge of the first side opening, and the stripper plate and the trough frame body are enclosed to form a trough body for containing liquid printing resin.
Further comprising: the supporting frame is laid on the edge of the stripping plate for a circle;
the first side opening edge is circumferentially provided with a connecting groove in a surrounding mode, the supporting frame is embedded into the connecting groove, and the opening edge of the connecting groove abuts against the stripper plate to enable the stripper plate to be in a tensioning state.
Further comprising: a plurality of resilient washers;
the supporting frame is connected with the connecting groove through a plurality of locking bolts, a plurality of elastic washers are arranged between the supporting frame and the connecting groove, and the elastic washers are respectively sleeved on the locking bolts;
the locking bolt is used for adjusting the relative position of the supporting frame and the connecting groove, and further adjusting the tensioning degree of the stripper plate.
In another aspect, an embodiment of the present invention further provides a 3D printer, including the silo of the printer as in any one above.
The embodiment of the utility model provides a printer shedder, silo and 3D printer mainly has the stripper plate of dodging the unit through the setting for local space has between stripper plate and the model, reduce the pattern drawing area, realize reducing drawing of patterns power, make the drawing of patterns smooth and easy, avoid damaging the model. In the prior art, the forming surfaces of the molds are all simple and smooth surfaces, so that vacuum is easily formed between the bottom surfaces of the molds and the forming surfaces, the mold drawing area is large, the demolding force is large when the molds are separated from the forming surfaces, and the molds or the forming surfaces are easily damaged. Compared with the prior art, in this application document, the surface that the stripper plate is used for supporting the model sets up dodges the unit, forms the space between stripper plate and model lower surface, reduces stripper plate and model area of contact, and does not influence the supporting role of stripper plate to the model, and then makes the model can be easier break away from the stripper plate, avoids dragging the risk that the model leads to the fracture of model and deformation.
Drawings
Fig. 1 is a schematic structural view of a printer demolding device and a material tank provided by an embodiment of the present invention;
fig. 2 is an exploded view of a printer demolding device and a material tank according to an embodiment of the present invention;
fig. 3 is a schematic view of a partial structure of a 3D printer according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the objects of the present invention, the following detailed description of the specific embodiments, structures, features and effects of the printer demolding device according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
In one aspect, as shown in fig. 1-2, an embodiment of the present invention provides a printer demolding device, including:
the demoulding plate 1 is used for supporting a mould printed by a printer;
the demoulding plate 1 is provided with an avoiding unit 3, and the avoiding unit 3 is used for forming a local gap between the demoulding plate 1 and the model.
The demolding plate 1 is a forming surface and a supporting device of a printer printing model, for example, in a photocuring printer, the demolding plate 1 is used as a parting film of a trough, and the model is solidified on the demolding plate 1 layer by layer; in a printer for spray coating by a spray head, a stripper plate 1 is used as the uppermost panel of a printing platform, a nozzle sprays hot-melt material on the stripper plate 1, and the material is solidified and formed on the stripper plate 1 to be used as the bottommost layer of a model; the stripper plate 1 is not limited to a horizontal plate-like configuration, as in a conveyor printer, where the stripper plate 1 acts as a conveyor and is driven by rollers, and where the print head is used to continuously print on the stripper plate 1.
For convenience of description, the following description takes the demolding plate 1 as a silo release film of the photo-curing printer as an example, the demolding plate 1 is a transparent film-shaped structure with certain flexibility, the demolding plate 1 is located at the bottom end of the silo, the bottom surface of the demolding plate 1 is used for being attached to a light-transmitting plate on a printer base, the top surface of the demolding plate 1 and a silo frame body enclose a groove, and the groove is used for containing liquid resin. In the embodiment of the present invention, because the resin is loaded on the stripper plate 1, namely, the resin is loaded on the release film, and the release film is a transparent film-like structure with a certain flexibility, under the action of gravity of the uncured resin, it can deform, and an upward reaction force is provided, thereby supporting the uncured resin, after the light penetrates through the light-transmitting plate and the stripper plate 1, the resin is cured on the upper surface of the stripper plate 1, the cured resin forms a resin layer adhered on the upper surface of the stripper plate 1, because the resin is cured into a solid from a liquid state, the volume is not easy to change, the release film can play a role of supporting because of the above reaction force, in the process that the resin is cured into a solid from a liquid state to a solid state, because the solid resin is adhered with the cured model under the printing platform, the reaction force provided by the release film can be gradually reduced. The above-mentioned "support" is understood to include not only the case where an upward force is provided, but also the case where the force is gradually reduced until only contact with the mold is made.
Dragging of the printing platform causes the resin layer to be separated from the upper surface of the demoulding plate 1, then the liquid resin enters the resin layer and continues to be solidified between the upper surface of the demoulding plate 1, wherein, the avoiding unit 3 is distributed on the demoulding plate 1, after the resin is formed (solidified), a local gap is generated between the lower surface of the resin layer and the demoulding plate 1 due to the avoiding unit 3, namely, the resin layer is not completely attached to the upper surface of the demoulding plate 1, the contact area of the resin layer and the demoulding plate 1 is reduced, the release area is reduced, and the avoiding unit 3 causes more opportunities for air to enter the space between the demoulding plate 1 and the resin layer, and the vacuum is prevented from being formed between the demoulding plate 1 and the resin layer.
It is understood that the avoiding unit 3 is not a separate structure different from the stripper plate 1, the avoiding unit 3 is a functional unit processed on the body of the stripper plate 1, the avoiding unit 3 is not limited to an integral structure, and the avoiding unit 3 may be a plurality of independent units distributed on the surface of the stripper plate 1. Specifically, the avoiding unit 3 is a plurality of recesses or protrusions distributed on the stripper plate 1, the recesses or protrusions are dense enough to enable the surface of the stripper plate 1 to have a stronger hydrophobic effect, when liquid resin flows into the stripper plate 1, due to the hydrophobic effect of the stripper plate 1, meanwhile, due to the fact that a small amount of air existing in the recesses or between the protrusions does not escape in time, the liquid resin is covered by the liquid resin, a supporting effect on the liquid resin is formed, and due to the fact that the liquid resin has certain liquid tension, the liquid resin is only in contact with a part of the area of the stripper plate 1 after contacting the stripper plate 1, therefore, the avoiding unit 3 can ensure that the stronger hydrophobic effect is formed on the stripper plate 1, and the avoiding unit 3 can enable the model to be separated from the stripper plate 1 more easily without affecting the forming quality of the model.
The embodiment of the utility model provides a printer shedder, silo and 3D printer mainly has the stripper plate of dodging the unit through the setting for local space has between stripper plate and the model, reduce the pattern drawing area, realize reducing drawing of patterns power, make the drawing of patterns smooth and easy, avoid damaging the model. In the prior art, the forming surfaces of the molds are all simple and smooth surfaces, so that vacuum is easily formed between the bottom surfaces of the molds and the forming surfaces, the mold drawing area is large, the demolding force is large when the molds are separated from the forming surfaces, and the molds or the forming surfaces are easily damaged. Compared with the prior art, in this application file, the surface that the stripper plate is used for supporting the model sets up dodges the unit, forms the space between stripper plate and model lower surface, reduces stripper plate and model area of contact, and does not influence the supporting role of stripper plate to the model, and then makes the model break away from the stripper plate that can be easier, avoids dragging the risk that the model leads to model fracture and deformation.
Specifically, a plurality of avoidance units 3 are arranged, the avoidance units 3 are distributed on the first side surface of the demoulding plate 1, the demoulding plate 1 between the avoidance units 3 can be used for supporting a model, and a local gap is formed between the avoidance units 3 and the model; alternatively, the evacuation unit 3 may be used to support the mold, and a local gap is formed between the mold and the stripper plate 1 between the evacuation units 3.
The first side surface is an upper surface of the stripper plate 1 for supporting the resin or the mold, and the avoidance unit 3 is provided only on the upper surface. In one embodiment, the avoidance unit 3 is a depression distributed on the stripper plate 1 such that a partial area of the stripper plate 1 between the resin or molded pattern and the avoidance unit 3 is in contact, thereby reducing the contact area of the pattern and the stripper plate 1. In another embodiment, the avoiding units 3 are protrusions distributed on the demoulding plate 1 and used for reducing the contact surface between the mould and the demoulding plate 1, and meanwhile, a plurality of avoiding units 3 can also jointly form a surface for resin forming, so that the hydrophobic effect of the mould plate 1 can be enhanced, and the supporting effect on the formed mould can also be achieved.
In addition, the concave or convex avoiding unit 3 can be arranged on the lower surface of the stripper plate 1, which is used for being in contact with the light-transmitting plate, so that air can be more easily circulated between the lower surface of the stripper plate 1 and the light-transmitting plate, and the quick separation of the model from the stripper plate 1 is facilitated. Taking the stripper plate 1 as an example of a release film, after the resin is cured, the resin layer is lifted upwards on the printing platform, and the avoidance unit 3 makes the lower surface of the release film and the light-transmitting plate locally contact with each other, so that the vacuum is not easy to form, the release film is driven by the resin layer to be bent upwards due to the adhesion between the resin layer and the release film, and the deformation and bending of the release film have opposite pulling force relative to the movement direction of the forming model, so that the demoulding of the model is facilitated under the action of the avoidance unit 3.
The form of the avoidance unit 3 may be various, and the following forms are taken as examples:
first, the avoidance units 3 may include a plurality of dotted recesses, and the dotted recesses are uniformly distributed on the stripper plate 1. The point-shaped depressions can be approximate conical depressions which are uniformly distributed on the upper surface of the stripper plate 1, and the opening edges of the conical depressions can be processed in a smooth transition manner.
Secondly, the avoidance units 3 may include a plurality of strip-shaped depressions, and the strip-shaped depressions are arranged in parallel and uniformly distributed on the stripper plate 1. The strip-shaped depressions are parallel to each other and spaced apart from each other by a distance and are disposed on the stripper plate 1, or the strip-shaped depressions are staggered to form a mesh-shaped depression.
Thirdly, the avoidance units can comprise a plurality of point-shaped bulges which are uniformly distributed on the demoulding plate. The dot-shaped protrusions include, but are not limited to, pyramidal protrusions, S-shaped protrusions, and/or irregularly shaped protrusions, and the spaces between the dot-shaped protrusions are used to create a gap with the mold.
The form of the avoiding unit 3 may be plural, and the stripper plate 1 may have a combination of plural kinds of avoiding units 3, and the avoiding unit 3 provided in the stripper plate 1 is designed so that the whole stripper plate 1 takes a frosted form or a frosted glass form.
The index ranges for the stripper plate 1 are specified below:
the thickness of the mold release sheet 1 is 90 μm or more and 110 μm or less.
The weight per unit area of the release sheet 1 is 206.4g/m or more 2 And is 223.6g/m or less 2 。
The tensile strength of the mold release sheet 1 is 19.6MPa or more.
The elongation at break of the release sheet 1 is 200% or more.
The thermal shrinkage of the mold release sheet 1 is not less than-5% and not more than + 5%.
The surface roughness of the mold release sheet 1 is 0.5Ra or more and 2.5Ra or less.
In some embodiments, the index range of the above-mentioned stripper plate 1 can be according to the demand, and it can be regarded as the utility model discloses stripper plate 1 uses to when constructing different printing models, embody more superior performance.
In some embodiments, the thickness of the stripper plate 1 is equal to or greater than 90 μm and equal to or less than 110 μm. The thickness of the stripper plate 1 is more than or equal to 90 μm, so that the stripper plate 1 can be ensured to have good tension after being stripped for multiple times in the process of separating the stripper plate 1 from the model, is not easy to tear, ensures certain light transmittance, and is convenient to realize photocuring of the model; the thickness of the stripping plate 1 is less than or equal to 110 mu m, so that the stripping plate 1 is prevented from influencing the penetrating effect of a printer light source, and the forming precision of printing resin on the stripping plate 1 is ensured.
The weight per unit area of the stripper plate 1 refers to the weight of one square meter of the stripper plate 1, with a greater weight per unit area providing a heavier area of the stripper plate 1, and in some embodiments, the weight per unit area of the stripper plate 1 can be greater than or equal to 206.4g/m 2 When the release sheet 1 is adhered by the moldWhen the stripper plate 1 is pulled upwards for a certain distance, the stripper plate 1 can be separated from the model through the combined action of the larger unit area weight of the stripper plate 1 and the pulling force of the stripper plate 1, so that the stripping effect on the stripper plate 1 is better; the weight per unit area of the stripper plate 1 is less than or equal to 223.6g/m 2 The situation that the mold is easily damaged by pulling due to the fact that the mold cannot pull the stripper plate 1 because the stripper plate 1 is too heavy and the mold is separated from the stripper plate 1 from the center is avoided.
The tensile strength of stripper plate 1 indicates that stripper plate 1 is drawn the biggest tensile stress that the power received until the fracture, in some embodiments of the utility model, the tensile strength of stripper plate 1 can be designed to be more than or equal to 19.6MPa for stripper plate 1 can produce sufficient bending deformation under the drive of model, makes the model by starting to separate with stripper plate 1 all around, and it is better from the type effect, and stripper plate 1 non-deformable damages.
The elongation degree of stripper plate 1 when the elongation at break indicates that stripper plate 1 is by tensile fracture in some embodiments the utility model discloses a, the elongation at break of stripper plate 1 can more than or equal to 200%, and stripper plate 1 just can break when being stretched more than two times of former area promptly, and great elongation at break makes stripper plate 1 in not having in time breaking away from with the model and by tensile deformation when great, also can not take place cracked problem, guarantees that the model is not damaged and the security of printing the process.
In some embodiments, the thermal shrinkage of the stripper plate 1 may be greater than or equal to-5% and less than or equal to + 5%, which avoids the problem of greater deformation of the stripper plate 1 due to the increased temperature of the printing resin irradiated by the light source, i.e., the area of the stripper plate 1 may increase or decrease at the average temperature of the printing resin during printing, but the absolute value of the ratio of the changed area to the original area is less than 0.05.
The surface of the stripper plate 1 is undulating and composed of many minute peaks and valleys so that the surface of the stripper plate 1 has a certain roughness. Ra is the mean value of the absolute value of the distance from each point in the contour to the middle line of the contour within a certain sampling length, and can fully reflect the characteristics of the height of the surface micro-geometry for measuring the roughness. In some embodiments, the surface roughness of the stripper plate 1 may be greater than or equal to 0.5Ra, so as to ensure that a sufficient gap is formed between the mold and the stripper plate 1, avoid vacuum formation between the mold and the stripper plate 1, and ensure the demolding effect; meanwhile, the surface roughness of the stripper plate 1 can be less than or equal to 2.5Ra, so that the phenomenon that the surface of the stripper plate 1 is too rough to influence the light transmission effect and the forming precision of the contact surface of the mold and the stripper plate 1 is influenced is avoided.
In one embodiment, the stripper plate 1 is a sanded FEP film having a maximum thickness of 106 μm, a minimum thickness of 96 μm, an average thickness of 100.2 μm, and a basis weight of 213.7g/m 2 The tensile strength in the first direction was 26.5MPa, the tensile strength in the second direction was 27.8MPa, the elongation at break in the first direction was 544, the elongation at break in the second direction was 487, the heat shrinkage rate in the first direction was-0.2%, the heat shrinkage rate in the second direction was-0.4%, and the roughness of the upper surface was 2.5 Ra.
The roughness of the upper surface refers to the roughness of the surface of the mold 1 on the side contacting the mold, and the roughness of the lower surface of the mold 1 contacting the light-transmitting plate may be the same as or different from the roughness of the upper surface, and in the above embodiment, the roughness of the lower surface of the mold 1 is 0.8 Ra.
On the other hand, as shown in fig. 1-2, the embodiment of the present invention further provides a trough of a printer, including the above printer demolding device, and a trough frame 2. Stripper plate 1 covers in the first side opening of silo framework 2, and is connected with first side opening border, and stripper plate 1 and silo framework 2 enclose to close to be the cell body and be used for holding liquid printing resin.
The trough frame body 2 is a rectangular frame body with a certain height, the trough frame body 2 comprises a first side opening and a second side opening, the thickness of the trough frame body 2 is gradually increased from the second side opening to the first side opening, and the edge with a certain thickness is formed at the first side opening and is used for connecting the stripper plate 1. The trough frame body 2 is light in weight and can contain more resin due to the arrangement.
Specifically, the trough further comprises a supporting frame 4, and the supporting frame 4 is laid on the edge of the demoulding plate 1 in a circle. The first side opening edge is circumferentially provided with a connecting groove 5 in a surrounding mode, the supporting frame 4 is embedded into the connecting groove 5, the opening edge of the connecting groove 5 abuts against the demoulding plate 1, and the demoulding plate 1 is in a tensioning state.
In this embodiment, the supporting frame 4 includes an upper frame 41 and a lower frame 42 having the same shape, and the upper frame 41 and the lower frame 42 respectively sandwich the edge of the stripper plate 1 from both sides of the stripper plate 1, thereby supporting the stripper plate 1. The upper frame 41 and the lower frame 42 are correspondingly provided with connecting holes, the connecting holes are distributed in the periphery of the supporting frame 4, the number of the connecting holes is specifically 16, and the supporting frame 4 is fixed with the trough frame body 2 through 16 connecting bolts. The inner circle and the outer lane at the first side opening border of silo framework 2 all are provided with the annular arch of circumference, form annular spread groove 5 between two annular archs, 4 embedding spread grooves of carriage after 5, the annular arch that is located the inner circle is 1 stripper plate of will conflicting for stripper plate 1 tightens, and stripper plate 1 follows the mould and upwards drags the degree of deformation when reducing the model from the type, thereby makes the faster stripper plate 1 that breaks away from of model. In other embodiments, the support frame 4 may be a frame that directly presses the stripper plate 1 into the connecting slot 5.
Further, the trough also comprises at least one elastic washer 7. The support frame 4 is connected with the connecting groove 5 through a plurality of locking bolts 6, a plurality of elastic washers 7 are arranged between the support frame 4 and the connecting groove 5, and the elastic washers 7 are respectively sleeved on the locking bolts 6. The locking bolt 6 is used for adjusting the relative position of the support frame 4 and the connecting groove 5, and further adjusting the tensioning degree of the stripper plate 1.
In this embodiment, the elastic washers 7 are made of soft rubber, the number of the elastic washers 7 may be one-to-one corresponding to the number of the connecting holes (16), the elastic washers 7 are in a shape similar to a suction cup, and have a radially smaller cylindrical portion and a bucket portion that radially increases gradually in a direction away from the cylindrical portion, and the bucket portion may deform under external pressure, so that the elastic washers 7 may extend or contract in different degrees in an axial direction. One end of the locking bolt 6 is threaded to the bottom surface of the connecting groove 5 after sequentially passing through the connecting hole of the supporting frame 4 and the elastic washer 7. The opening of the bucket-shaped part of the elastic washer 7 abuts against the bottom surface of the connecting groove 5, and the columnar part of the elastic washer 7 abuts against the support frame 4. The stripper plate 1 is a thin film and is easily deformed due to multiple pulling of the mold or increase of the use time, so that the stripper plate 1 is in a loose state, and the stripping efficiency is affected. The accessible is adjusted locking bolt 6, compresses tightly elastic washer 7, makes carriage 4 further be close to the spread groove 5 bottom surface, and stripper plate 1 is driven by carriage 4 and is expanded all around, realizes adjusting the tensioning degree of stripper plate 1. In other embodiments, the elastic washer 7 may correspond to the shape of the connection slot 5, so as to be housed in said connection slot 5 when assembled
In another aspect, as shown in fig. 3, the embodiment of the present invention further provides a 3D printer, including the trough of any one of the above printers, including the advantages of any one of the above printer troughs, which is not repeated herein.
Further, the 3D printer still includes base box, light source subassembly 02, Z axle subassembly 03, drive assembly 04, print platform subassembly 05 and light-passing board. The base box includes roof 11, and 11 upper berths of roof are equipped with the light-passing board, and Z axle subassembly 03 cross-under is in roof 11, and is connected with drive assembly 04, and print platform subassembly 05 is mobilizable to be connected in Z axle subassembly 03, and the silo of printer is used for placing on roof 11, and stripper plate 1 is used for laminating with the light-passing board. The light source subassembly 02 sets up in the light-passing board in one side of stripper plate 1 back to, and the light of light source subassembly 02 projects on light-passing board 6. The driving assembly 04 is used for driving the Z-axis assembly 03 to drive the printing platform assembly 05 to move in a direction perpendicular to the light-transmitting plate 6.
The light source assembly 02 is a light-emitting plate capable of emitting Ultraviolet (UV) light, and the light-transmitting plate is made of transparent materials, such as a light-permeable LCD display panel, a glass plate or a transparent acrylic plate. Z axle subassembly 03 perpendicular to roof 11 sets up, and drive assembly 04 is lead screw motor and lead screw, and print platform subassembly 05 threaded connection is the lead screw on the lead screw motor, and print platform subassembly 05 and Z axle subassembly 03 sliding connection, and the lead screw motor operation drives print platform subassembly 05 and extends vertical direction and remove. Printing the initial moment, print platform subassembly 05's the relative stripper plate 1 upper surface of platform lower surface, and with the 1 upper surface of stripper plate at a certain space interval as the shaping space, light source subassembly 02 sends the light beam of specific shape, after passing light-passing board and stripper plate 1, shine on the liquid resin in the shaping space, make the liquid resin solidify the first layer of forming the model, then, print platform subassembly 05 rebound, owing to set up on the stripper plate 1 and dodge unit 3, make the model break away from with stripper plate 1 easily, and then liquid resin gets into between the first layer lower surface of model and the 1 upper surface of stripper plate, continuously carry out each layer and print.
The following is a disposable description of the technical scheme of the utility model:
in one aspect, an embodiment of the utility model provides a printer shedder, include:
the demoulding plate 1 is used for supporting a mould printed by a printer;
the demoulding plate 1 is provided with an avoiding unit 3, and the avoiding unit 3 is used for forming a local gap between the demoulding plate 1 and the model.
The number of the avoidance units 3 is multiple, and the avoidance units 3 are distributed on the surface of one side of the stripping plate 1;
the avoidance units 3 comprise a plurality of point-shaped recesses which are distributed on the demoulding plate 1; and/or the avoidance units 3 comprise a plurality of strip-shaped depressions which are arranged in parallel or staggered; and/or the avoidance units comprise a plurality of point-shaped bulges which are distributed on the demoulding plate.
Wherein the thickness of the demoulding plate is more than or equal to 90 μm and less than or equal to 110 μm.
The weight per unit area of the release sheet is 206.4g/m or more 2 And 223.6g/m or less 2 。
The tensile strength of the release sheet is 19.6MPa or more.
The elongation at break of the release sheet is 200% or more.
The thermal shrinkage of the stripper plate is not less than-5% and not more than + 5%.
The surface roughness of the mold release sheet is 0.5Ra or more and 2.5Ra or less. .
On the other hand, the embodiment of the utility model also provides a trough of printer, including above-mentioned shedder, and trough framework 2;
the stripper plate 1 covers the first side opening of the trough frame body 2 and is connected with the edge of the first side opening, and the stripper plate 1 and the trough frame body 2 are enclosed to form a trough body for containing liquid printing resin.
Wherein, still include: the supporting frame 4 is paved on the edge of the stripper plate 1 for a circle;
the first side opening edge is circumferentially provided with a connecting groove 5 in a surrounding mode, the supporting frame 4 is embedded into the connecting groove 5, the opening edge of the connecting groove 5 abuts against the demoulding plate 1, and the demoulding plate 1 is in a tensioning state.
Wherein, still include: a plurality of elastic washers 7;
the supporting frame 4 is connected with the connecting groove 5 through a plurality of locking bolts 6, a plurality of elastic washers 7 are arranged between the supporting frame 4 and the connecting groove 5, and the plurality of elastic washers 7 are respectively sleeved on the plurality of locking bolts 6;
the locking bolt 6 is used for adjusting the relative position of the supporting frame 4 and the connecting groove 5, and further adjusting the tensioning degree of the stripper plate 1.
In another aspect, an embodiment of the present invention further provides a 3D printer, including the silo of the printer as in any one above.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. A printer demolding device, characterized by comprising:
a stripper plate for supporting a mold printed by the printer;
the demolding plate is provided with an avoiding unit, and the avoiding unit is used for enabling a local gap to be formed between the demolding plate and the model.
2. The printer demolding device as claimed in claim 1,
the number of the avoidance units is multiple, and the avoidance units are distributed on the surface of one side of the stripping plate or simultaneously distributed on the surfaces of two sides of the stripping plate;
the avoidance units comprise a plurality of point-shaped recesses, and the point-shaped recesses are distributed on the demoulding plate;
and/or the avoidance units comprise a plurality of strip-shaped recesses; the strip-shaped depressions are arranged in parallel, or the strip-shaped depressions are arranged in a staggered manner;
and/or the avoidance units comprise a plurality of point-shaped bulges, and the point-shaped bulges are distributed on the demoulding plate.
3. The printer demolding device as claimed in claim 1,
the thickness of the demoulding plate is more than or equal to 90 μm and less than or equal to 110 μm.
4. The printer demolding device as claimed in claim 1,
the weight per unit area of the stripping plate is more than or equal to 206.4g/m 2 And 223.6g/m or less 2 。
5. The printer demolding device as claimed in claim 1,
the tensile strength of the stripper plate is greater than or equal to 19.6 MPa.
6. Printer release device according to claim 1,
the elongation at break of the stripper plate is greater than or equal to 200%.
7. The printer demolding device as claimed in claim 1,
the thermal shrinkage rate of the stripping plate is more than or equal to-5% and less than or equal to + 5%.
8. The printer demolding device as claimed in claim 1,
the surface roughness of the stripper plate is not less than 0.5Ra and not more than 2.5 Ra.
9. A carriage for a printer, comprising the printer demolding device as claimed in any one of claims 1 to 8, and a carriage frame;
the stripper plate covers in the first side opening of silo framework, and with first side opening border is connected, the stripper plate with the silo framework encloses to close and is the groove and is used for holding liquid printing resin.
10. The printer carriage of claim 9, further comprising:
the supporting frame is laid on the edge of the stripper plate for one circle;
the first side opening edge is circumferentially provided with a connecting groove in a surrounding mode, the supporting frame is embedded into the connecting groove, the connecting groove opening edge is abutted against the stripper plate, and the stripper plate is in a tensioning state.
11. The printer carriage of claim 10, further comprising:
a plurality of resilient washers;
the supporting frame is connected with the connecting groove through a plurality of locking bolts, a plurality of elastic washers are arranged between the supporting frame and the connecting groove, and the elastic washers are respectively sleeved on the locking bolts;
the locking bolt is used for adjusting the relative position of the supporting frame and the connecting groove, and further adjusting the tensioning degree of the stripper plate.
12. A 3D printer comprising a carriage of a printer according to any one of claims 9 to 11.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122891871 | 2021-11-23 | ||
| CN2021228918715 | 2021-11-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217258450U true CN217258450U (en) | 2022-08-23 |
Family
ID=82889072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123269381.8U Active CN217258450U (en) | 2021-11-23 | 2021-12-23 | Printer shedder, silo and 3D printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217258450U (en) |
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2021
- 2021-12-23 CN CN202123269381.8U patent/CN217258450U/en active Active
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