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CN-224224535-U - Film stretching pressing plate assembly and film stretching mechanism

CN224224535UCN 224224535 UCN224224535 UCN 224224535UCN-224224535-U

Abstract

The utility model relates to the technical field of photo-curing equipment, in particular to a film stretching pressing plate assembly and a film stretching mechanism, wherein the film stretching pressing plate assembly is applied to the photo-curing equipment, the photo-curing equipment comprises a film stretching assembly, the film stretching assembly is provided with a yielding space for accommodating a release film, the film stretching pressing plate assembly comprises a film stretching pressing plate, a transparent flat plate and an isolation layer, the transparent flat plate can extend into the yielding space under the condition that a connecting part is connected with the film stretching assembly, the transparent flat plate is isolated from the release film through the isolation layer, and the problem that the release effect of the release film is difficult due to a photoresist effect caused by the fact that the transparent flat plate is directly attached to the release film can be avoided by arranging the isolation layer, so that the release effect of the release film is improved, the liquid level leveling time of photosensitive resin on the release film is effectively shortened, and the working efficiency of the photo-curing equipment is improved.

Inventors

  • LIU WEI
  • HOU DIANMING
  • ZHAO CHENYANG
  • ZHUO JIA

Assignees

  • 托托科技(苏州)有限公司

Dates

Publication Date
20260512
Application Date
20250508

Claims (16)

  1. 1. The film stretching pressing plate assembly is applied to photo-curing equipment, the photo-curing equipment comprises a film stretching assembly (6), and the film stretching assembly (6) is provided with a yielding space for accommodating a release film (5), and is characterized by comprising a film stretching pressing plate (1), a transparent flat plate (2) and an isolation layer (3); The membrane stretching press plate (1) is provided with a mounting groove (111) and a connecting part (12) used for being connected with the membrane stretching assembly (6), the transparent flat plate (2) is arranged in the mounting groove (111), the transparent flat plate (2) can stretch into the abdication space under the condition that the connecting part (12) is connected with the membrane stretching assembly (6), and the transparent flat plate (2) is isolated from the release membrane (5) through the isolation layer (3).
  2. 2. The membrane-stretching platen assembly according to claim 1, characterized in that the isolation layer (3) is a gel layer; When the connecting part (12) is connected with the stretching membrane assembly (6), the colloid layer is abutted with the release membrane (5).
  3. 3. The membrane-stretching platen assembly according to claim 2, wherein the membrane-stretching platen (1) comprises a housing (11) with two open ends and the connecting portion (12), the connecting portion (12) being provided at a side of the housing (11) remote from the release film (5); the side of the housing (11) remote from the connecting portion (12) is provided with the mounting groove (111).
  4. 4. A stretched film pressing plate assembly according to claim 3, characterized in that the shell (11) is provided with pouring grooves for pouring the colloid layer, the pouring grooves are arranged at intervals with the transparent flat plate (2), and the pouring grooves are arranged on one side, close to the transparent flat plate (2), of the shell (11) facing the release film (5).
  5. 5. The membrane-stretching platen assembly according to claim 1, characterized in that the isolation layer (3) is a sealed isolation cavity formed between the transparent flat plate (2) and the release film (5) with the connection portion (12) connected with the membrane-stretching assembly (6).
  6. 6. The membrane-stretching platen assembly according to claim 5, further comprising a gas supply device capable of forming the sealed isolation cavity between the transparent flat plate (2) and the release film (5).
  7. 7. The membrane-stretching platen assembly according to claim 6, characterized in that the air supply device comprises an air inlet and an air outlet, both of which are provided between the transparent flat plate (2) and the release film (5) and are in communication with the sealed isolation chamber; the air inlet is used for inflating between the transparent flat plate (2) and the release film (5); the air outlet is used for vacuumizing the sealed isolation cavity between the transparent flat plate (2) and the release film (5).
  8. 8. The membrane-stretching platen assembly according to any one of claims 1-7, characterized in that it further comprises a sealing ring (4); The bottom of the mounting groove (111) is provided with an annular fixing groove (113), part of the sealing ring (4) is arranged in the annular fixing groove (113), and the rest part of the sealing ring (4) protruding from the annular fixing groove (113) is abutted to the transparent flat plate (2).
  9. 9. The membrane stretching press plate assembly according to claim 8, wherein an annular gap is formed at the edge of one side of the transparent flat plate (2) far away from the isolation layer (3), and the sealing ring (4) protruding from the remaining part of the annular fixing groove (113) is arranged in the annular gap.
  10. 10. The membrane-stretching platen assembly according to claim 9, characterized in that the opposite sides of the remaining part of the sealing ring (4) disposed in the annular gap are respectively abutted against the inner wall of the housing (11) and the side wall of the annular gap.
  11. 11. The membrane-stretching press assembly according to any one of claims 1-7, wherein the transparent flat plate (2), the isolating layer (3) and the release film (5) are arranged in parallel, and the isolating layer (3) is used for covering the area between the transparent flat plate (2) and the release film (5).
  12. 12. The membrane-stretching press assembly according to claim 11, wherein one end of the housing (11) further comprises an abutment surface (112) provided opposite to the connecting portion (12), the abutment surface (112) being provided around the mounting groove (111).
  13. 13. The membrane-stretching platen assembly according to claim 12, wherein after the transparent flat plate (2) is mounted in the mounting groove (111), the transparent flat plate (2) and the mounting groove (111) still form a groove-shaped structure for accommodating the isolation layer (3), and after the isolation layer (3) is disposed in the groove-shaped structure, a side of the isolation layer (3) away from the transparent flat plate (2) is located on the same plane as the abutting surface (112).
  14. 14. The membrane-stretching platen assembly according to claim 1, characterized in that the height of the housing (11) is greater than or equal to the height of the membrane-stretching assembly (6).
  15. 15. A membrane stretching mechanism, characterized by comprising a membrane stretching assembly (6) and a membrane stretching platen assembly according to any one of claims 1-14; the membrane stretching assembly (6) is provided with a yielding space for accommodating the release membrane (5); After the membrane stretching assembly (6) is connected with the connecting part (12), the transparent flat plate (2) stretches into the abdication space, and the isolation layer (3) is arranged between the transparent flat plate (2) and the release film (5).
  16. 16. The membrane stretching mechanism according to claim 15, wherein the membrane stretching assembly (6) comprises a first membrane stretching clamping plate (61) and a second membrane stretching clamping plate (62) which are oppositely arranged, and the release membrane (5) is arranged between the first membrane stretching clamping plate (61) and the second membrane stretching clamping plate (62); the first stretching clamping plate (61) and the second stretching clamping plate (62) are detachably connected through a first connecting piece; The first stretch film clamp plate (61) is provided with a first abdication space, the second stretch film clamp plate (62) is provided with a second abdication space, and after the first stretch film clamp plate (61) is connected with the second stretch film clamp plate (62), the first abdication space and the second abdication space form the abdication space.

Description

Film stretching pressing plate assembly and film stretching mechanism Technical Field The utility model relates to the technical field of photo-curing equipment, in particular to a film stretching pressing plate assembly and a film stretching mechanism. Background In a pull-down type 3D printing apparatus based on the surface projection micro-stereoscopic forming technology, when large-format processing is performed, the phenomenon of swelling of a central area of a stretched film is common, and the phenomenon is mainly related to factors such as exposure parameters, resin characteristics, equipment design and the like. Firstly, when the fluidity of the resin is poor, the resin needs to be leveled for a long time in the film and resetting process, and if the leveling time is too long, the processing efficiency is reduced, so that the overall processing time is prolonged. In addition, the difference in leveling times from resin to resin can also affect the stability of this process. Second, a larger exposure parameter may cause resin to swell, and particularly, a central region of a large-format release film is more relaxed than an edge, and swelling phenomenon is liable to occur. In terms of equipment design, relaxation and uneven stretching of the release film are also one cause of expansion, and particularly in large-format processing, the center of the film is more likely to be deformed. In addition, improper temperature control and non-uniformity of the exposure light source may also exacerbate the occurrence of swelling, and excessive temperature or non-uniformity of the light source may cause uneven expansion of the resin, thereby affecting the processing accuracy. Disclosure of utility model In order to solve at least one of the technical problems, the film stretching pressing plate assembly can avoid the problem that the transparent flat plate is difficult to release due to the photoresist effect caused by direct lamination with the release film, so that the release effect of the release film is improved, the time for leveling the liquid level of the photosensitive resin on the release film is effectively shortened, and the working efficiency of the photo-curing equipment is improved. The utility model provides a film stretching pressing plate component which is applied to photo-curing equipment, wherein the photo-curing equipment comprises a film stretching component, the film stretching component is provided with a abdication space for accommodating a release film, and the film stretching pressing plate component comprises a film stretching pressing plate, a transparent flat plate and an isolation layer; The membrane stretching press plate is provided with a mounting groove and a connecting part used for being connected with the membrane stretching assembly, the transparent flat plate is arranged in the mounting groove, the transparent flat plate can extend into the abdication space under the condition that the connecting part is connected with the membrane stretching assembly, and the transparent flat plate is isolated from the release membrane through the isolation layer. In some possible embodiments, the barrier layer is a gel layer; Under the condition that the connecting part is connected with the stretching membrane component, the colloid layer is abutted with the release membrane. In some possible embodiments, the film stretching press plate comprises a shell with two open ends and the connecting part, wherein the connecting part is arranged on one side of the shell away from the release film; The side of the shell, which is far away from the connecting part, is provided with the mounting groove. In some possible embodiments, a pouring groove for pouring the colloid layer is arranged on the shell, the pouring groove is arranged at intervals with the transparent flat plate, and the pouring groove is arranged on one side, close to the transparent flat plate, of the shell, facing the release film. In some possible embodiments, the isolation layer is a sealed isolation cavity formed between the transparent flat plate and the release film in a case that the connection part is connected with the stretching film assembly. In some possible embodiments, the film stretching platen assembly further comprises a gas supply apparatus capable of forming the sealed isolation cavity between the transparent platen and the release film. In some possible embodiments, the air supply device comprises an air inlet and an air outlet, both of which are arranged between the transparent flat plate and the release film and are communicated with the sealed isolation cavity; the air inlet is used for inflating between the transparent flat plate and the release film; The air outlet is used for vacuumizing the sealed isolation cavity between the transparent flat plate and the release film. In some possible embodiments, the membrane-stretching platen assembly further comprises a sealing ring; The mounting groove bottom is