CN218315271U - Printing platform and three-dimensional printer - Google Patents

Abstract

The utility model discloses a print platform and three-dimensional inkjet printer, print platform includes: the flat plate is provided with a bearing surface, the bearing surface is provided with a printing area and an edge area positioned at the side edge of the printing area, and the printing area is used for bearing a formed workpiece; the stop piece is arranged at the edge area and extends along the extending direction of the side edge of the printing area; the stop piece is provided with a liquid discharge hole facing the printing area. The edge area of the printing platform is provided with the stop piece, so that the stop piece can play a role in stopping the workpiece flowing to the edge area in the process that the printing platform rises to the liquid level of the source liquid, the formed workpiece is prevented from floating away from the printing platform along with the flowing of the liquid resin, and the formed workpiece is prevented from falling into the trough; the stop piece extends along the side edge of the printing area to adapt to the size of the printing area, so that the stop piece can intercept workpieces at all positions of the printing area; the liquid discharge hole is used for allowing source liquid to pass through so as to reduce resistance caused by the liquid level in the ascending process of the printing platform, and therefore the working efficiency of the printing platform can be improved.

Description

Printing platform and three-dimensional printer

Technical Field

The utility model relates to a three-dimensional inkjet printer technical field, in particular to print platform and three-dimensional inkjet printer.

Background

Three-dimensional printing is a technique of constructing an object by printing layer by layer using an adhesive material such as powdered metal, plastic, or photocurable resin on the basis of a digital model file.

The three-dimensional photocuring forming method is an important branch of three-dimensional printing technology, and is characterized in that laser with specific wavelength and intensity is used for irradiating the surface of liquid photosensitive resin to cure a layer of resin in a specific area on the surface, after one layer of resin is cured, a lifting platform is lowered for a certain distance, a coating scraper is used for uniformly covering a layer of liquid resin on the cured layer, the laser irradiation curing of the next layer is carried out, and the steps are repeated to finally obtain a three-dimensional workpiece which is formed by stacking layers.

The three-dimensional workpiece is jacked up by the jacking mechanism after being formed so as to release the connection relation with the printing platform; and then the printing platform rises to expose the liquid level of the source liquid, so that the material taking component scrapes and collects the workpiece. In the process that the printing platform rises towards the liquid level of the source liquid, the source liquid on the printing platform can flow back to the trough from the periphery of the printing platform, workpieces with small volumes and densities easily drift along with the source liquid, the workpieces are easily drifted away from the printing platform and fall into the trough, and the scraping and collecting processes of the workpieces are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a print platform and three-dimensional inkjet printer, aim at solving among the current three-dimensional inkjet printer that the work piece floats from print platform's technical problem easily.

In order to achieve the above object, the utility model provides a printing platform includes:

the flat plate is provided with a bearing surface, the bearing surface is provided with a printing area and an edge area positioned at the side edge of the printing area, and the printing area is used for bearing a formed workpiece;

the stop piece is arranged at the edge area and extends along the extending direction of the side edge of the printing area; the stop piece is provided with a liquid discharge hole facing the printing area.

Optionally, the number of the liquid discharge holes is multiple, and the multiple liquid discharge holes are arranged at intervals along the extending direction of the stopper.

Optionally, in the length direction of the stopper, the ratio of the sum of the widths of the plurality of drain holes to the length of the stopper is set to 1: 4.

optionally, the width of the liquid discharge hole is set to be 10mm to 15mm; and/or the distance between two adjacent liquid discharge holes is set to be 5mm to 10mm.

Optionally, the width of the drain hole tapers from a side close to the printing area to a side away from the printing area.

Optionally, the drain hole extends to the plate surface of the plate.

Optionally, the height of the stopper is set to 20mm to 60mm; and/or the thickness of the stop piece in the direction perpendicular to the side edge of the printing platform is set to be 7mm to 10mm.

Optionally, the number of the edge regions is multiple, the multiple edge regions include two first edge regions arranged oppositely, the two first edge regions are respectively arranged at two opposite side edges of the printing region, and the two first edge regions are both provided with the stop member.

Optionally, the plurality of edge regions further include two oppositely disposed second edge regions, and the two second edge regions and the two first edge regions together enclose the printing region; the second edge region is provided with a plurality of through holes, the through holes are arranged at intervals along the length direction of the second edge region, and the through holes are used for a limiting rod to pass through; the first via hole is the shortest distance from the first edge area in the plurality of via holes, and the distance between the first via hole and the stop piece is set to be 10mm to 15mm.

The utility model discloses still provide a three-dimensional inkjet printer, three-dimensional inkjet printer includes: the printing device comprises a fixing plate, a trough and a printing platform; the flat plate is provided with a bearing surface, the bearing surface is provided with a printing area and an edge area positioned at the side edge of the printing area, and the printing area is used for bearing a formed workpiece; the stop piece is arranged at the edge area and extends along the extending direction of the side edge of the printing area; the stop piece is provided with a liquid discharge hole, and the liquid discharge hole faces the printing area; the silo with the fixed plate is connected, the silo is used for holding source liquid, print platform with the fixed plate is connected, print platform is used for bearing the weight of the shaping work piece.

In the technical scheme of the printing platform, the stop piece is arranged at the edge area of the printing platform, so that in the process that the printing platform rises to the liquid level of the source liquid, the stop piece can play a role in stopping the workpiece flowing to the edge area, and the formed workpiece is prevented from drifting away from the printing platform along with the flow of the liquid resin, so that the formed workpiece is prevented from falling into the trough; the stop piece extends along the side edge of the printing area to fully adapt to the size of the printing area, so that the stop piece can intercept workpieces at all positions of the printing area; the drain hole is used for allowing source liquid to pass through, so that resistance caused by the liquid level in the ascending process of the printing platform is reduced, and the working efficiency of the printing platform can be improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.

For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.

Fig. 1 is a schematic structural diagram of an embodiment of the printing platform of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a schematic side projection view of an embodiment of the printing platform of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

fig. 5 is a schematic view of a top projection of an embodiment of the printing platform of the present invention;

fig. 6 is a partially enlarged view of C in fig. 5.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)	Reference numerals	Name (R)
						100	Printing platform	10	Flat plate	11	Printing area
12	First edge zone	20	Stop piece	21	Drain hole
						13	Second edge region	14	Via hole	141	A first via hole
100	Printing platform	10	Flat plate	11	Printing area

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The utility model provides a print platform 100 and three-dimensional inkjet printer.

The utility model discloses a three-dimensional printer is used for implementing three-dimensional printing technique, and three-dimensional printing technique is blue book with computer three-dimensional design model, through software layering dispersion and numerical control molding system, utilizes modes such as laser beam, hot melt nozzle to carry out the successive layer with special materials such as metal powder, ceramic powder, plastics, cell tissue and piles up cohering, and final stack shaping produces the emerging manufacturing technology of entity product. Different from the traditional manufacturing industry in which the raw materials are shaped and cut in a machining mode such as a die and a turn-milling mode to finally produce finished products, the three-dimensional printing technology changes a three-dimensional entity into a plurality of two-dimensional planes, and the materials are processed and overlapped layer by layer to produce, so that the manufacturing complexity is greatly reduced. Therefore, the digital manufacturing mode has the natural advantages of simple process, low customization cost, short production period and the like, and can be extended to a wider production crowd.

The utility model discloses a three-dimensional inkjet printer can include the fixed plate, silo, print platform 100, jack-up mechanism and get the material subassembly.

The fixing plate is an integral frame of the three-dimensional printer; the feed groove is connected with the fixed plate and used for containing source liquid; printing platform 100 and fixed plate sliding connection, printing platform 100 is used for bearing the weight of the shaping part. The light machine of the three-dimensional printer emits laser beams to irradiate source liquid, and the source liquid is solidified and molded on the printing platform 100. The fixing plate is an integral frame of the three-dimensional printer; the feed groove is connected with the fixed plate and used for containing source liquid; printing platform 100 and fixed plate sliding connection, printing platform 100 is used for bearing the weight of the shaping part. The light machine of the three-dimensional printer emits laser beams to irradiate source liquid, and the source liquid is solidified and molded on the printing platform 100. The jacking mechanism is arranged at the bottom of the material groove and is used for jacking the formed workpiece after penetrating through the printing platform 100; the take-out assembly is slidably connected to the mounting plate and is used to scrape the formed workpiece from the print platform 100.

In order to make this technical field personnel right the utility model discloses a three-dimensional printer has a more audio-visual understanding, will use specific implementation process as the example right the utility model discloses a three-dimensional printer's printing principle explains.

1: the optical machine platform emits laser beams to irradiate source liquid in the material groove, and the source liquid is solidified and formed on the printing platform 100 to obtain a formed part; 2: the printing platform 100 moves towards the bottom of the material groove until the jacking mechanism penetrates through the printing platform 100, and the jacking mechanism exerts force on the formed part to separate the formed part from the printing platform 100; 3: the take-off assembly sweeps across the printing platform 100 to scrape the molded part from the printing platform 100. And (4) repeating the steps 1 to 3 by the three-dimensional printer, thereby realizing the automatic production of the formed workpiece.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of a printing platform 100 according to the present invention; fig. 2 is a partially enlarged view of a point a in fig. 1. The printing platform 100 includes: the flat plate 10 is provided with a bearing surface, the bearing surface is provided with a printing area 11 and an edge area positioned at the side of the printing area 11, and the printing area 11 is used for bearing a formed workpiece; a stopper 20 disposed at the edge region, wherein the stopper 20 extends along an extending direction of a side of the printing region 11; the stopper 20 is opened with a drain hole 21, and the drain hole 21 faces the printing region 11.

The carrying surface of the plate 10 is the upper surface of the plate 10, and the carrying surface is used for carrying the forming workpiece. The bearing surface comprises a printing area 11 positioned in the middle and an edge area positioned on the periphery of the printing area 11, a workpiece is printed and formed in the printing area 11, and a plurality of through holes are formed in the printing area 11. The jacking mechanism comprises a plurality of ejector pins, the ejector pins are connected with the bottom of the material groove, and the ejector pins are used for penetrating through the through holes when the printing platform 100 moves towards the bottom of the material groove so as to jack up the formed workpiece.

After the workpiece is lifted, the printing platform 100 moves upward to expose the liquid level of the source liquid in the trough, so that the material taking assembly can scrape and collect the workpiece on the carrying surface. During the process of raising the printing platform 100 towards the liquid surface, the source liquid above the printing platform 100 flows back to the trough from the periphery of the printing platform 100. The workpiece in the printing area 11 may drift toward the edge area under the flowing action of the source liquid, and the stopper 20 in the edge area may block the workpiece to prevent the workpiece from falling into the trough after further drifting away from the printing platform 100, so as to improve the scraping and collecting efficiency of the workpiece.

The stops 20 extend continuously along the length of the edge zone to stop work pieces from various positions in the print zone 11. The drain hole 21 conducts the printing area 11 with the edge of the printing platform 100, so that when the printing platform 100 rises from the lower part of the liquid level, the source liquid can flow to the edge of the printing platform 100 after passing through the drain hole 21 and finally flows back to the material tank; this reduces resistance of the source liquid to the raising of the printing platform 100, thereby improving the raising efficiency of the printing platform 100. Since the drain hole 21 is formed in the stopper 20, when the printing platform 100 is processed, a hole is formed in the stopper 20, and the stopper 20 with the drain hole 21 formed therein can be mounted on the flat plate 10; thus, the processing difficulty of the printing platform 100 can be reduced.

In the technical solution of the printing platform 100 of the present invention, the stop member 20 is disposed at the edge region of the printing platform 100, so that in the process of raising the printing platform 100 to the liquid level of the source liquid, the stop member 20 can block the workpiece flowing to the edge region, and prevent the formed workpiece from drifting away from the printing platform 100 along with the flow of the liquid resin, thereby preventing the formed workpiece from falling into the trough; the stoppers 20 extend along the sides of the printing zone 11 to sufficiently adapt to the size of the printing zone 11, so as to intercept the workpieces at various positions of the printing zone 11; the drain holes 21 are used for allowing the source liquid to pass through, so as to reduce resistance caused by the liquid level during the ascending process of the printing platform 100, and thus the working efficiency of the printing platform 100 can be improved.

The number of the drain holes 21 may be one or plural, and if the number of the drain holes 21 is too small, the flow-off speed of the source liquid is slow, and the effect of assisting the raising of the printing platen 100 is poor. Illustratively, as shown in fig. 1, the number of the drain holes 21 is plural, and the plural drain holes 21 are provided at intervals along the extending direction of the stopper 20. By forming the plurality of drain holes 21 in the stopper 20, the total opening area of the stopper 20 can be increased, and the drain speed of the drain holes 21 can be increased to further reduce the rising resistance of the source liquid to the printing platform 100.

The total open area of drainage holes 21 should be a sufficient proportion of the area of stopper 20 to substantially reduce the effect of stopper 20 on drainage during the ascent of printing deck 100. Illustratively, in the length direction of the stopper 20, the ratio of the sum of the widths of the plurality of drain holes 21 to the length of the stopper 20 is set to 1: 4; if the ratio of the sum of the widths of the liquid discharge holes 21 to the length of the stopper 20 is less than 1; if the ratio of the sum of the widths of the drain holes 21 to the length of the stopper 20 is greater than 3; therefore, the ratio of the sum of the widths of the plurality of drain holes 21 to the length of the stopper 20 is set to 1: 4, the total liquid discharge speed of the plurality of liquid discharge holes 21 can be ensured, and the structural strength of the stopper 20 can be ensured.

Specifically, please refer to fig. 3 and fig. 4, fig. 3 is a schematic side projection diagram of an embodiment of the printing platform 100 according to the present invention; fig. 4 is a partially enlarged view of fig. 3 at B. The width D of the liquid discharge hole 21 is set to be 10mm to 15mm; if the width D of the drain hole 21 is larger than 15mm, it is difficult to block the small-sized workpiece; if the width D of the liquid discharge hole 21 is less than 10mm, more holes need to be formed, and the processing difficulty is higher; therefore, by setting the width D of the drain hole 21 to 10mm to 15mm, the stopper effect on the workpiece can be ensured, and the processing difficulty of the stopper 20 can be reduced. The distance d between two adjacent liquid discharge holes 21 is set to be 5mm to 10mm, so that the width of each liquid discharge hole 21 is more balanced, and the structural strength of the stopper 20 at the position between two adjacent liquid discharge holes 21 is ensured.

The width of the drain hole 21 may be constant or may be gradually varied. Illustratively, the width of the drain hole 21 is gradually reduced from the side close to the printing area 11 to the side far from the printing area 11, so that the workpiece blocked by the stopper 20 can be prevented from blocking the drain hole 21, and stable drainage of the drain hole 21 can be ensured.

The drain holes 21 may be circular holes or strip-shaped holes. Illustratively, as shown in fig. 2, the drain holes 21 extend to the plate surface of the plate 10. The drain hole 21 extends along the height direction of the stopper 20, and the lower end of the drain hole 21 is communicated with the plate surface of the plate 10, so that the source liquid can directly flow along the plate surface of the plate 10 when flowing through the drain hole 21 along the plate surface of the plate 10, and a protruding structure is not needed to be crossed, so that the flow rate of the source liquid is prevented from being slowed down at the drain hole 21, and the liquid discharge speed can be improved.

For example, as shown in fig. 4, the height H of the stopper 20 is set to be 20mm to 60mm, and the height of the stopper 20, that is, the protruding size of the stopper 20 from the bearing surface, if the height H of the stopper 20 is less than 20mm, the workpiece is easy to cross the stopper 20 from above the stopper 20 when floating to the edge region, and the stopping effect is affected; if the height H of the stop member 20 is greater than 60mm, the material taking assembly for scraping the workpiece is easily obstructed, and the material taking process is influenced; therefore, the height H of the stop member 20 is set to be 20mm to 60mm, so that the stop effect on the workpiece can be ensured, and the influence on the material taking process can be avoided. The thickness T of the stopper 20 in the direction perpendicular to the side of the printing platform 100 is set to be 7mm to 10mm, and if the thickness T of the stopper 20 is less than 7mm, the overall structural strength of the stopper 20 is affected; if the thickness T of the stopper 20 is greater than 10mm, the flow path of the source liquid in the liquid discharge hole 21 is too long to flow to the side of the printing platform 100 faster; therefore, by setting the thickness T of the stopper 20 to 7mm to 10mm, the structural stability of the stopper 20 can be ensured and the liquid discharge rate of the liquid discharge hole 21 can be increased.

For example, please refer to fig. 5 and fig. 6, fig. 5 is a schematic top-down projection diagram of an embodiment of the printing platform 100 according to the present invention; fig. 6 is a partially enlarged view of fig. 5 at C. The number of the marginal areas is a plurality of, and the marginal areas include two first marginal areas 12 that set up relatively, two first marginal areas 12 locate respectively print district 11's relative both sides limit department, two first marginal areas 12 all are provided with stop member 20.

The printing platform 100 is generally a square platform, that is, the printing area 11 is a rectangular printing area 11, the number of edge areas is four, and four edge areas are distributed at four sides of the printing area 11. The plurality of edge regions further include two oppositely-arranged second edge regions 13, and the two second edge regions 13 and the two first edge regions 12 jointly surround the printing region 11; wherein, two first edge areas 12 are opposite, two second edge areas 13 are opposite, and the two first edge areas and the two second edge areas 13 jointly surround the printing area 11. There are two sets of stops 20, two first edge zones 12 being provided, respectively, to block workpieces that float towards the two first edge zones 12, respectively.

Second marginal zone 13 has seted up via hole 14, the quantity of via hole 14 is a plurality of, and is a plurality of via hole 14 sets up along the length direction interval of second marginal zone 13, via hole 14 is used for supplying the gag lever post to pass. It should be noted that the material taking assembly moves along the length direction of the first edge region 12 above the printing region 11 when scraping the workpiece, that is, the material taking assembly needs to pass through another second edge region 13 when sweeping along the printing region 11, so that the two second edge regions 13 cannot be provided with the stoppers 20 to ensure that the material taking assembly can scrape the workpiece smoothly.

In the above embodiment, during the movement of the printing platform 100 toward the bottom of the trough, the workpiece is lifted by the ejector pins of the lifting mechanism. In the process that the printing platform 100 is lifted, in order to avoid that the workpiece is drifted from the printing platform 100 from the second edge region 13, a plurality of through holes 14 may be formed in the second edge region 13, and the plurality of through holes 14 are arranged at intervals along the length direction of the second edge region 13; and a limiting rod with the height larger than that of the ejector pin is arranged in the region of the second edge region 13 of the jacking mechanism, the through hole 14 is used for the limiting rod to penetrate out, and the top end of the limiting rod always protrudes out of the bearing surface before the printing platform 100 leaves the liquid level, so that the limiting rod can block the workpiece floating to the second edge region 13 in the ascending process of the printing platform 100. When the printing platform 100 rises to a position away from the liquid level, the bearing surface is higher than the limiting rod, i.e. the limiting rod does not protrude out of the second edge region 13 any more, so that the material taking assembly can pass through smoothly.

Illustratively, the shortest distance from the first edge region 12 among the plurality of vias 14 is a first via 141, and a distance L between the first via 141 and the stopper 20 is set to be 10mm to 15mm. Therefore, the stop part 20 can be prevented from being touched after the limiting rod passes through the first through hole 141, and the workpiece can be prevented from drifting away from the position between the limiting rod and the stop part 20. The number of the first via holes 141 is 4, and the first via holes are respectively near four opposite corners of the printing region 11.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.

The ice making device provided by the embodiments of the present application is described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A printing platform, comprising:

the flat plate is provided with a bearing surface, the bearing surface is provided with a printing area and an edge area positioned at the side edge of the printing area, and the printing area is used for bearing a formed workpiece;

the stop piece is arranged at the edge area and extends along the extending direction of the side edge of the printing area; the stop piece is provided with a liquid discharge hole, and the liquid discharge hole faces the printing area.

2. The printing platform of claim 1, wherein the drain hole is provided in a plurality, and the plurality of drain holes are spaced apart along an extending direction of the stopper.

3. The printing platform of claim 2, wherein in the length direction of the stopper, the ratio of the sum of the widths of the plurality of drainage holes to the length of the stopper is set to 1: 4.

4. a printing platform as in claim 3 wherein the drain hole is provided with a width of 10mm to 15mm; and/or the distance between two adjacent liquid discharge holes is set to be 5mm to 10mm.

5. The printing platform of claim 4, wherein the drain aperture tapers in width from a side proximate the print zone to a side distal from the print zone.

6. The printing platform of claim 5, wherein the drain hole extends to a face of the plate.

7. The printing platform of claim 1, wherein the height of the stopper is set to 20mm to 60mm; and/or the thickness of the stop piece in the direction perpendicular to the side edge of the printing platform is set to be 7mm to 10mm.

8. The printing platform of any one of claims 1 to 7, wherein the number of the edge regions is plural, and the plural edge regions include two oppositely disposed first edge regions, the two first edge regions are respectively disposed at two opposite sides of the printing region, and the two first edge regions are both provided with the stoppers.

9. The printing platform of claim 8, wherein said plurality of edge regions further comprises two oppositely disposed second edge regions, both of said second edge regions and both of said first edge regions together enclosing said printing region; the second edge region is provided with a plurality of through holes, the through holes are arranged at intervals along the length direction of the second edge region, and the through holes are used for a limiting rod to pass through; the shortest distance between the first edge area and the plurality of via holes is a first via hole, and the distance between the first via hole and the stop piece is set to be 10 mm-15 mm.

10. A three-dimensional printer, characterized in that it comprises: a holding plate, a trough connected to the holding plate for holding a source liquid, and a printing platform according to any one of claims 1 to 9 connected to the holding plate for carrying a formed workpiece.

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