CN214983198U

CN214983198U - Bearing structure of photocuring printer and photocuring printer

Info

Publication number: CN214983198U
Application number: CN202121067582.7U
Authority: CN
Inventors: 林泽航; 李厚民
Original assignee: Shenzhen Yuze Technology Co ltd
Current assignee: Youyouzao Technology (Beijing) Co.,Ltd.
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-12-03
Anticipated expiration: 2031-05-18

Abstract

The application relates to a bearing structure and photocuring printer of photocuring printer. The support structure includes: a bearing surface and a buffer device; the bearing surface bears the release film, and the buffer device bears the bearing surface and buffers the liquid discharge pressure caused by the forming object. The scheme that this application provided can cushion the pressure that produces when moulding platform and forming object downstream, avoids the forming object to take place the fault, from the damaged and bearing surface of type membrane to destroy.

Description

Bearing structure of photocuring printer and photocuring printer

Technical Field

The application relates to the technical field of 3D printing, especially, relate to a bearing structure and photocuring printer of photocuring printer.

Background

In the field of 3d (three dimensional) printing, rapid prototyping techniques can be classified into various categories according to the materials used, the manner of prototyping, and the like, and a photo-curing prototyping technique is more common. The principle of the photocuring forming technology is as follows: the characteristic that the photosensitive resin in a fluid state is subjected to polymerization reaction under illumination is utilized, and a light source is irradiated according to the cross section shape of an object to be formed, so that the resin in the fluid state is cured and formed.

Based on the resin pool release type photocuring molding technology, a photocuring printer enables a cross section pattern of a 3D printing object to pass through a specific wavelength through data transmission equipment, and a molded object is cured on one side of a release film or a release structure, which is far away from a light source, in a laser scanning mode, a projector projection mode, an LCD mask illumination mode or the like, is permanently bonded with a molding platform or a molded object, and is temporarily bonded with the release film or the release structure. When the forming table drives the formed object to be far away from the release film or the release structure, the formed object is separated from the release film or the release structure for nondestructive separation under the help of the release film or the release structure, and then the one-time release printing process is completed. After the release is finished, the forming table descends, a layer of thickness distance is reserved between the formed object and the release film, curing exposure and release of next-layer printing are carried out, and the printing of the whole 3D printing object is finished in a reciprocating mode.

The related art photo-curing printer adopts a fixed rigid bearing surface as a bearing surface under the release film, for example, the rigid bearing surface of the LCD photo-curing printer adopts plate glass fixed on a fixed platform to play a role in bearing the release film, bearing the pressure of a forming table and a formed object, and the like. Under the supporting action of the rigid supporting surface, when the forming table and the formed object are pressed downwards, the space with the required thickness of the resin in the fluid state in the resin pool is reserved, and when the resin in the resin pool is irradiated by light with a specific wavelength, a cross-linking reaction is carried out, and the resin is converted into a solid state from a liquid state.

In the related art, a photo-curing printer with a rigid bearing surface is adopted, when the printing speed requirement is high, a forming table and a formed object can be rapidly lowered under the driving of a motor, the drainage pressure is caused to be too large, the formed object is broken, the printing fails, even the release film is damaged and/or the rigid bearing surface is damaged, or when redundant materials appear in a resin pool, the release film is damaged and/or the rigid bearing surface is damaged under the downward pressure action of the forming table and the formed object.

SUMMERY OF THE UTILITY MODEL

For solving or the problem that exists among the partial solution correlation technique, the application provides a bearing structure and photocuring printer of photocuring printer, can cushion the pressure that produces when shaping platform and the shaping object downstream, avoid the shaping object to take place the fault, from the damaged and bearing surface of type membrane to destroy.

This application first aspect provides a bearing structure of photocuring printer, the bearing structure includes: a bearing surface and a buffer device;

the bearing surface bears the release film, and the buffer device bears the bearing surface and buffers the liquid discharge pressure caused by the forming object.

Preferably, the damping means comprises an elastomeric damper;

the top end of the elastic buffer piece supports the bearing surface and buffers the liquid discharge pressure caused by the forming object.

Preferably, the buffer device further comprises a buffer column;

the buffer column comprises a sleeve and a piston rod, one end of the piston rod extends into the sleeve, the top of the other end of the piston rod supports the bearing surface, and the elastic buffer piece is limited by the top of the other end of the piston rod and the top of the sleeve and is sleeved on the piston rod.

Preferably, the top of the other end of the piston rod is provided with a bearing piece, and the top of the other end of the piston rod bears the bearing surface through the bearing piece.

Preferably, the bearing surface is a flexible bearing surface of a flexible material.

Preferably, the elastic buffer member is a buffer spring, or an elastic material buffer member.

Preferably, the supporting structure further comprises a connecting piece and a fixing platform for positioning and fixing the supporting piece;

one end of the connecting piece for supporting the fixed platform is arranged at the bottom of the fixed platform, and the other end of the connecting piece is movably connected with the sleeve.

Preferably, the contact surfaces of the fixed platform and the supporting piece are provided with wedge-shaped planes matched with each other.

Preferably, the support member is a cushioning member of flexible material.

The application second aspect provides a photocuring printer, foretell bearing structure is installed to the photocuring printer.

The technical scheme provided by the application can comprise the following beneficial effects:

the technical scheme of this application, in the printing process, forming table and forming object downstream, the forming object is arranged at the resin pond and is opened photosensitive resin and produce liquid discharge pressure when, the buffer of bearing face can contract downwards, can cushion the forming object, from the pressure that type membrane and bearing face received, avoid the forming object to take place the fault, from the damaged and bearing face destruction of type membrane, reduce the photocuring printer and damage the risk, reduce and maintain, cost of maintenance, improve the printing stability of photocuring printer.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

Fig. 1 is a schematic structural diagram of a supporting structure of a photocuring printer according to an embodiment of the present application;

fig. 2 is another schematic structural diagram of a supporting structure of a photocuring printer according to an embodiment of the present disclosure.

Detailed Description

Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are illustrated in the accompanying drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The embodiment of the application provides a bearing structure of photocuring printer, the pressure that produces when can cushion the downward motion of shaping platform and forming object avoids the forming object to take place the fault, from the damaged and bearing surface of type membrane to destroy.

The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a supporting structure of a photocuring printer according to an embodiment of the present disclosure.

Referring to fig. 1, a supporting structure of a photocuring printer comprises a supporting surface 10 and a buffer device 20. The support surface 10 supports the release film 50, and the buffer device 20 supports the support surface 10 and buffers the liquid discharge pressure caused by the molding material 40.

In one embodiment, the supporting surface 10 supporting the release film 50 is supported by the buffer device 20. When the molding table 30 moves downward and the molded article 40 generates a liquid discharge pressure when the photosensitive resin 80 is discharged from the resin pool 70, the support surface 10 is pressed downward, and the buffer device 20 supporting the support surface 10 can be retracted downward. When accomplishing once printing, the profiled bed 30 and the shaping object 40 upwards move, and bearing surface 10 receives decurrent pressure reduction or does not receive pressure, and buffer device 20 of bearing surface 10 can upwards resume, makes bearing surface 10 resume the settlement position, can make the photocuring printer normally carry out subsequent printing to guarantee the follow-up precision of printing of photocuring printer.

The bearing structure of photocuring printer of this application embodiment, in the printing process, moulding platform 30 and the downstream of forming object 40, forming object 40 is when photosensitive resin 80 produces drainage pressure at resin pool 70 row, buffer 20 can contract downwards, can cushion forming object 40, the pressure that receives from type membrane 50 and bearing surface 10, avoid forming object 40 to take place the fault, from the damaged and bearing surface 10 destruction of type membrane 50, reduce photocuring printer damage risk, reduce the maintenance, cost of maintenance, improve photocuring printer's printing stability.

Referring to fig. 1, the damping device 20 includes an elastic buffer 201; the top end of the elastic buffer member 201 supports the support surface 10 and buffers the liquid discharge pressure caused by the molding 40.

In one embodiment, the supporting surface 10 supporting the release film 50 is supported by the elastic buffer member 201. When the forming table 30 moves downwards, the forming object 40 is discharged from the photosensitive resin 80 in the resin pool 70 to generate liquid discharge pressure, the bearing surface 10 is pressed downwards, the elastic buffer member 201 of the bearing surface 10 can contract downwards, the pressure applied to the forming object 40, the release film 50 and the bearing surface 10 can be buffered, and the forming object 40 is prevented from breaking, being damaged by the release film 50 and being damaged by the bearing surface 10. When accomplishing once printing, the profiled bed 30 and the shaping object 40 upwards move, and bearing surface 10 receives decurrent pressure to reduce or do not receive pressure, and the elastic buffer 201 of bearing surface 10 can upwards resume, makes bearing surface 10 resume the settlement position, can make the photocuring printer normally carry out subsequent printing to guarantee the follow-up precision of printing of photocuring printer.

In one embodiment, the damping device 20 further includes a damping post 202; buffer column 202 includes sleeve and piston rod, and piston rod one end stretches into the sleeve, and the other end top bearing face 10 of piston rod, elastic buffer 201 are injectd the cover by the other end top of piston rod and telescopic top and are located the piston rod. The top of the other end of the piston rod is provided with a bearing 60, and the top of the other end of the piston rod bears the bearing surface 10 through the bearing 60. The carrier 60 is a buffer of flexible material.

In an embodiment, one end of the piston rod extends into the sleeve and can slide up and down in the sleeve, the bottom end of the piston rod extending into the sleeve is engaged with the inner wall of the top end of the sleeve, and the elastic buffer 201 is limited by the top end of the piston rod and the top end of the sleeve and sleeved on the piston rod. The top of piston rod and telescopic top are provided with the mounting respectively, and the bottom of piston rod and telescopic top are block each other in the sleeve, and the elastic buffer 201 of piston rod is located to the cover is injectd in the top of piston rod and telescopic top. When the piston rod is subjected to a downward pressure, the piston rod slides downward in the sleeve, and when the piston rod is subjected to a reduced or no downward pressure, the piston rod slides upward in the sleeve under the elastic force of the elastic buffer 201. When the piston rod is not stressed, the bottom end of the piston rod is clamped with the top end of the sleeve, so that the piston rod is prevented from being separated from the sleeve under the elastic action of the elastic buffer member 201, and the buffer device 20 is prevented from bearing the bearing surface 10. During the printing process, the forming table 30 and the forming object 40 move downwards, and the forming object 40 discharges the photosensitive resin 80 in the resin pool 70 to generate liquid discharge pressure, so that the bearing surface 10 is subjected to downward pressure. The bearing is transmitted to piston rod and elastic buffer 201 from the decurrent pressure that bearing face 10 of type membrane 50 will receive, and piston rod and elastic buffer 201 are the downward shrink under the effect of decurrent pressure, can cushion forming object 40, from the pressure that type membrane 50 and bearing face 10 received, avoid forming object 40 to take place the fault, from the damaged and bearing face 10 destruction of type membrane 50. When the bearing surface 10 receives pressure, the bearing piece 60 made of flexible material arranged at the top end of the piston rod can further buffer and absorb the pressure received by the molded object 40, the release film 50 and the bearing surface 10, and the molded object 40 is prevented from generating faults, the release film 50 is prevented from being damaged and the bearing surface 10 is prevented from being damaged.

Referring to fig. 1, the elastic buffer 201 is a buffer spring, and the buffer spring is limited by the top end of the piston rod and the top end of the sleeve and is sleeved on the piston rod. When the forming table 30 and the formed object 40 move downwards and the formed object 40 discharges the photosensitive resin 80 in the resin pool 70 to generate liquid discharge pressure, the buffer spring and the piston rod are compressed downwards under the downward pressure, and the pressure applied to the formed object 40, the release film 50 and the bearing surface 10 can be buffered. At moulding stage 30 and the upwards motion of forming object 40, the pressure that buffer spring and piston rod received reduces or does not receive pressure effect time, and buffer spring upwards resumes, and the piston rod also upwards resumes under buffer spring's drive, can make by setting up in the setting position of the bearing face 10 automatic recovery of the bearing piece 60 bearing on piston rod top, can make the normal subsequent printing of going on of photocuring printer to guarantee the follow-up precision of printing of photocuring printer.

Referring to fig. 2, the elastic buffer 201 is an elastic material buffer. The elastic buffer 201 made of elastic material is limited and sleeved on the piston rod by the top end of the piston rod and the top end of the sleeve. When the forming table 30 and the formed object 40 move downwards and the formed object 40 discharges the photosensitive resin 80 in the resin pool 70 to generate liquid discharge pressure, the elastic buffer member 201 and the piston rod are compressed downwards under the downward pressure, and the pressure applied to the formed object 40, the release film 50 and the bearing surface 10 can be buffered. At forming station 30 and the upward movement of forming object 40, the elastic buffer 201 of elastic material and the pressure that the piston rod received reduce or do not receive the pressure effect to act on, elastic buffer 201 of elastic material upwards resumes, the piston rod also upwards resumes under elastic buffer 201's of elastic material drive, can make by setting up in the setting position of the automatic restoration of bearing surface 10 of bearing 60 bearing on piston rod top, can make the photocuring printer normally carry out subsequent printing, and guarantee the precision of the follow-up printing of photocuring printer.

In an embodiment, the elastic buffer 201 made of an elastic material may be an elastic buffer made of an elastic material such as elastic rubber, elastic silicone, or the like.

Referring to fig. 1 or fig. 2, the supporting structure further includes a connecting member 100, and a fixing platform 110 for positioning and fixing the supporting member 60; one end of a connecting piece 100 for supporting the fixed platform 110 is installed at the bottom of the fixed platform 110, and the other end of the connecting piece 100 is movably connected with the sleeve. The contact surfaces of the fixed platform 110 and the support 60 are provided with matching wedge-shaped flat surfaces 120.

In one embodiment, the corner-shaped connecting member 100 is connected to the bottom of the fixed platform 110 at the upper end and movably connected to the sleeve of the bumper beam 202 at the lower end to support the fixed platform 110. The fixed platform 110 and the supporting piece 60 are mutually clamped through the matched wedge-shaped planes 120 of the contact surfaces of the fixed platform 110 and the supporting piece 60, and the fixed platform 110 limits and fixes the supporting piece 60. The position of the fixing platform 110 connected with the connecting piece 100 can be adjusted by moving the connecting piece 100 up and down, so that the supporting piece 60 can be positioned and fixed, the position of the supporting surface 10 supported by the supporting piece 60 can be adjusted, and the position of the release film 50 supported by the supporting surface 10 can be adjusted. After the primary printing is completed, the forming table 30 and the forming object 40 move upwards, the pressure borne by the bearing surface 10 is reduced or is not stressed, the bearing surface 10 automatically moves upwards to reset under the elastic action of the buffer device 20, the wedge-shaped plane 120 can guide the bearing piece 60 to reset, the automatic positioning and fixing of the bearing piece 60 are realized, the bearing surface 10 borne by the bearing piece 60 can automatically restore to a set position, the photocuring printer can normally perform subsequent printing, and the subsequent printing precision of the photocuring printer is ensured.

In one embodiment, the connector 100 may be made of a rigid material or a resiliently flexible material. In this embodiment, the "Z" -shaped connecting member 100 may be a "Z" -shaped spring plate, the upper end of the spring plate is connected to the bottom of the fixed platform 110, and the lower end of the spring plate is movably connected to the sleeve of the cushion column 202 to support the fixed platform 110. In the printing process, the forming table 30 and the forming object 40 move downwards, the forming object 40 discharges the photosensitive resin 80 in the resin pool 70 to generate liquid discharge pressure, so that the bearing surface 10 is subjected to downward pressure, and the Z-shaped spring piece is used for buffering the downward impact force, thereby preventing the flexible bearing surface 10 and the release film 50 from being damaged.

In an embodiment, the supporting surface 10 may be a flexible supporting surface made of a flexible material, and the supporting surface 10 may be made of a flexible transparent composite material sheet or a tough thin glass sheet, so that the supporting surface 10 may deform under pressure, and may absorb and buffer the pressure applied thereto, and the light transmittance of the light source of the photo-curing printer is not affected. The bearing piece 60 is provided with a clamping groove for mounting the bearing surface 10 made of flexible material, and the bearing surface 10 made of flexible material is fixedly mounted in the clamping groove. When the forming table 30 and the formed object 40 move downwards and the formed object 40 discharges the photosensitive resin 80 in the resin pool 70 to generate liquid discharge pressure, the bearing surface 10 of the flexible material can deform under the action of the downward pressure, so that the pressure on the buffer formed object 40, the release film 50 and the bearing surface 10 can be absorbed, the formed object 40 is prevented from being broken, and the redundant substance 90 in the resin pool 70 is prevented from damaging the release film 50, the bearing surface 10 and other parts in the photocuring printer under the action of the downward pressure.

Referring to fig. 1 or 2, the support structure comprises at least two sets of cushioning means 20, at least two sets of cushioning means 20 supporting respective sides of the support surface 10.

In an embodiment, the two sets of buffer devices 20 are respectively symmetrically distributed on two opposite sides of the bottom of the bearing surface 10, so that the downward pressure applied to the bearing surface 10 can be uniformly distributed on the two sets of buffer devices 20, the buffer devices 20 on two opposite sides of the bottom of the bearing surface 10 can be uniformly stressed, the two sets of buffer devices 20 can move downwards to contract for the same distance, the bearing surface 10 is guaranteed to be always kept horizontal when stressed, the flexible bearing surface 10 is prevented from being inclined or shaken, the release film 50 supported by the flexible bearing surface 10 is prevented from being inclined or shaken, and the release effect of the release film 50 is guaranteed to be good and stable.

It can be seen that, the bearing structure of photocuring printer of this application embodiment, in the printing process, forming table 30 and forming object 40 downstream, forming object 40 arranges photosensitive resin 80 in resin pond 70 and when producing flowing back pressure, flexible material's bearing face 10, flexible material's supporting piece 60, cushion column 202 and elastic buffer 201, all can absorb and/or cushion the pressure that receives, cushion forming object 40, the pressure that receives from type membrane 50 and bearing face 10, avoid forming object 40 to take place the fault, from the damaged and bearing face 10 destruction of type membrane 50, reduce photocuring printer damage risk, reduce the maintenance, cost of maintenance, improve photocuring printer's printing stability. After one-time printing is completed, the forming table 30 and the forming object 40 move upwards, the supporting piece 60 and the elastic buffer piece 201 made of flexible materials can enable the supporting surface 10 to automatically recover to a set position, the supporting surface 10 made of flexible materials can also automatically recover to deform, the photocuring printer can normally perform subsequent printing, and the accuracy of the subsequent printing of the photocuring printer is guaranteed.

The bearing structure of the photocuring printer of this application has been introduced to the aforesaid, and is corresponding, and this application still provides a photocuring printer.

The embodiment of the application also provides a photocuring printer, and the photocuring printer comprises the bearing structure.

Referring to fig. 1 or fig. 2, the supporting structure of the photo-curing printer according to the embodiment of the present application includes a supporting surface 10 and a buffer device 20. The support surface 10 supports the release film 50, and the buffer device 20 supports the support surface 10 and buffers the liquid discharge pressure caused by the molding material 40.

The photocuring printer of the embodiment of the application, in the printing process, moulding platform 30 and the downward motion of forming object 40, forming object 40 is when resin pool 70 is arranged photosensitive resin 80 and is produced drainage pressure, buffer 20 can shrink downwards, can cushion forming object 40, from the pressure that type membrane 50 and bearing surface 10 received, avoid forming object 40 to take place the fault, from the damaged and bearing surface 10 destruction of type membrane 50, reduce photocuring printer and damage the risk, reduce the maintenance, cost of maintenance, improve photocuring printer's printing stability.

The aspects of the present application have been described in detail hereinabove with reference to the accompanying drawings. In the above 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 related descriptions of other embodiments. Those skilled in the art should also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined, and deleted according to actual needs, and the modules in the device of the embodiment of the present application may be combined, divided, and deleted according to actual needs.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A bearing structure of photocuring printer, characterized by includes:

a bearing surface and a buffer device;

2. The support structure of claim 1 wherein:

the buffer device comprises an elastic buffer piece;

3. The support structure of claim 2 wherein:

the buffer device also comprises a buffer column;

4. The support structure of claim 3 wherein: and the top of the other end of the piston rod is provided with a bearing piece, and the top of the other end of the piston rod bears the bearing surface through the bearing piece.

5. The support structure of claim 1 wherein:

the bearing surface is a flexible bearing surface of a flexible material.

6. The support structure of claim 2 wherein:

the elastic buffer member is a buffer spring or an elastic material buffer member.

7. The support structure of claim 4 wherein: the bearing structure also comprises a connecting piece and a fixed platform for positioning and fixing the bearing piece;

8. The support structure of claim 7 wherein:

the contact surfaces of the fixed platform and the supporting piece are provided with wedge-shaped planes which are matched with each other.

9. The support structure of claim 4 wherein:

the support is a buffer of flexible material.

10. A photocuring printer, characterized by:

the photocuring printer is equipped with a support structure according to any one of claims 1 to 9.