SLA resin filtering device

Abstract

The utility model provides an SLA resin filtering device. Comprising a resin tank which is used for containing liquid photosensitive resin; the filter device is placed in the resin tank and comprises a filter screen frame; the rotating screen plate is rotationally connected to the bottom of the filter screen frame, and a plurality of limiting blocks are further mounted at the bottom of the filter screen frame; the upper surface of the limiting block is used for abutting against the lower surface of the movable end of the rotating net plate. The lifting device is used for lifting the filtering device, and the telescopic end of the lifting device is fixedly connected with a supporting arm; when the lifting device drives the filter screen frame to sink, under the action of water pressure, the bottom of the filter screen frame can be opened conveniently, and photosensitive resin mixed with chippings and broken supports can enter the filter screen frame conveniently; the filter screen frame is lifted through the lifting device, and the bottom of the filter screen frame is automatically closed under the action of water pressure; and after the filter screen frame is separated from the resin tank, the liquid photosensitive resin flows back to the resin tank through the meshes on the liquid photosensitive resin, so that the filtering effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of photosensitive resin processing, in particular to a SLA resin filtering device. Background Art

[0002] At present, SLA resin (laser light-cured photosensitive resin) is often damaged or scratched during the printing process, and a lot of debris and broken supports will be generated during the process of shoveling parts off the machine. The debris and broken supports will fall into the resin tank through the gap between the stencil platform and the resin tank and the mesh on the stencil platform. After a long period of accumulation, the debris and broken supports in the resin tank will increase, and the liquid photosensitive resin will become more and more viscous, which is more likely to cause bad parts. Therefore, in the process of photosensitive resin printing, it is necessary to filter out the debris and broken supports in the resin tank at intervals.

[0003] There are currently two filtering methods. One is to manually salvage the residue with a scoop net. Due to the high viscosity of photosensitive resin, the photosensitive resin in the scoop net will slowly pass through the mesh of the scoop net and flow back into the resin tank, which increases the labor intensity of the workers. The other is to release the resin in the entire resin tank, re-filter it and then transport it back to the resin tank. The entire operation process is time-consuming and labor-intensive, seriously affecting production efficiency. Utility Model Content

[0004] The purpose of the utility model is to improve and innovate the shortcomings and problems existing in the background technology and to provide a SLA resin filtering device.

[0005] A SLA resin filtering device, comprising:

[0006] A resin tank, wherein the resin tank is used to hold liquid photosensitive resin;

[0007] A filter device, the filter device is placed in the resin tank, the filter device comprises a filter frame, and the filter frame has openings at the bottom and top;

[0008] A rotating screen plate, the rotating screen plate is rotatably connected to the bottom of the filter screen frame, and a plurality of limit blocks are also installed at the bottom of the filter screen frame; the upper surface of the limit block is used to abut against the lower surface of the movable end of the rotating screen plate;

[0009] A lifting device, the lifting device is used to realize the lifting and lowering of the filter device, and the telescopic end of the lifting device is fixedly connected to a supporting arm;

[0010] A buckle device is used to detachably connect the support arm and the filter device together.

[0011] A further solution is that the number of the filter screen plates is four, the number of the limit blocks is three, the cross-sections of two of the limit blocks are L-shaped, the filter screen plates close to the edge of the filter screen frame are rotatably connected to the inner wall of the filter screen frame by a hinge, and the filter screen plates located in the middle of the filter screen frame are rotatably connected to the limit blocks by a hinge.

[0012] A further solution is that the snap device includes an insertion rod, one end of the insertion rod passes through the support arm and fits into a limiting groove opened in the lower part of the side wall of the filter frame. A clamping ring is clamped on the insertion rod located on the outer side of the support arm, and a handle ring is fixedly connected to one end of the insertion rod away from the limiting groove. A spring is also sleeved on the insertion rod, and both ends of the spring are respectively fixedly connected to the clamping ring and the outer wall of the support arm.

[0013] A further solution is that a handle ring is fixedly connected to one end of the insertion rod away from the limiting groove.

[0014] A further solution is that the lifting device can be an electric telescopic rod or a hydraulic cylinder.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: when the filter screen frame is driven to sink by the lifting device, the movable end of the filter screen plate is rotated upward under the action of water pressure, thereby opening the bottom of the filter screen frame, making it convenient for the photosensitive resin mixed with debris and broken supports to enter the filter screen frame; when the filter screen frame sinks to the bottom of the resin tank; the filter screen frame is lifted by the lifting device, and under the action of water pressure, the movable end of the filter screen plate is rotated downward to abut against the limit block, thereby closing the bottom of the filter screen frame; after the filter screen frame is separated from the resin tank, the liquid photosensitive resin flows back into the resin tank through the mesh holes on the filter screen frame and the filter screen plate, while the residue is retained in the filter screen frame, thereby achieving the filtering effect; the utility model conveniently fixes the filter screen frame on the support arm through the snap device, such as the mesh plate platform of the prior art is installed on the support arm, and the filter screen frame of the present application only needs to be disassembled, so as to facilitate the use of the lifting device to realize the lifting and lowering of the filter screen frame in the Z-axis direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of the device provided by the embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the structure of the filter frame provided by an embodiment of the utility model;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0020] Figure 4 This is a schematic cross-sectional structure diagram of a buckle device provided in an embodiment of the utility model.

[0021] Figure numerals: workbench 1, lifting device 2, supporting arm 3, buckle device 4, handle ring 41, insertion rod 42, snap ring 43, spring 44, limit groove 45, resin tank 5, filter device 6, filter screen frame 61, rotating screen plate 62, limit block 63. DETAILED DESCRIPTION

[0022] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific implementations and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] See also Figure 1-Figure 4 The utility model provides a SLA resin filtering device, including a workbench 1, the upper surface of which is sequentially provided with a resin tank 5 and a lifting device 2. The lifting device 2 may be an electric telescopic rod or a hydraulic cylinder, which is not specifically limited in this application. The resin tank 5 is used to hold liquid photosensitive resin; the telescopic end of the lifting device 2 is fixedly connected to a support arm 3, and the end of the support arm 3 away from the lifting device 2 is detachably connected to a mesh platform or a filtering device 6 through a snap device 4, and the end of the support arm 3 is used to support the mesh platform or the filtering device 6.

[0026] It should be noted that in the prior art, one end of the support arm 3 away from the lifting device 2 is connected to the screen platform through a snap device 4, and the snap device 4 is located on both sides of the screen platform, and the end of the support arm 3 is tilted upward. The screen platform is located in the resin tank 5, so that the lifting device 2 can lift the screen platform, thereby facilitating printing production on the screen platform to prepare light-cured photosensitive resin. However, in the printing production process, it is often damaged or scratched, and in the process of shoveling parts off the machine, a lot of debris and broken supports will be generated. The debris and broken supports will fall into the resin tank 5 through the gap between the screen platform and the resin tank 5 and the mesh on the screen platform; after a long period of accumulation, the debris and broken supports in the resin tank 5 will become more and more, and the liquid photosensitive resin will become more and more viscous, and it will be more likely to cause bad parts. Therefore, in the process of photosensitive resin printing production, it is necessary to filter out the debris and broken supports in the resin tank 5 at intervals.

[0027] In order to filter out the debris and broken supports in the resin tank 5, in this embodiment, the screen platform is first removed from the support arm 3, and then the end of the support arm 3 away from the lifting device 2 is connected to the filter device 6 through the buckle device 4. The filter device 6 is placed in the resin tank 5.

[0028] It should be noted that, in the present application, the filter device 6 is fixed to the support arm 3 by means of the snap-fit ​​device 4 , so that the filter device 6 can be conveniently lifted and lowered in the height direction by means of the lifting device 2 .

[0029] In this embodiment, the filter device 6 includes a filter frame 61, which is open at the bottom and the top; the bottom of the filter frame 61 is rotatably connected to a plurality of rotating mesh plates 62, and a plurality of limit blocks 63 are also installed at the bottom of the filter frame 61; the upper surface of the limit block 63 is used to resist the lower surface of the movable end of the rotating mesh plate 62. It can be understood that when the lifting device 2 drives the filter screen frame 61 to sink, under the action of water pressure, the movable end of the filter screen plate 62 rotates upward, thereby opening the bottom of the filter screen frame 61, making it convenient for the photosensitive resin mixed with debris and broken supports to enter the filter screen frame 61; when the filter screen frame 61 sinks to the bottom of the resin tank 5; the filter screen frame 61 is lifted by the lifting device 2, and under the action of water pressure, the movable end of the filter screen plate 62 rotates downward until it is against the limit block 63, thereby closing the bottom of the filter screen frame 61; after the filter screen frame 61 is separated from the resin tank 5, the liquid photosensitive resin flows back into the resin tank 5 through the mesh holes on the filter screen frame 61 and the filter screen plate 62, while the residue remains in the filter screen frame 61, thereby achieving the filtering effect.

[0030] Specifically, the number of the filter screen plates 62 is four, the number of the stop blocks 63 is three, and the cross-sections of the two stop blocks 63 are L-shaped. The filter screen plates 62 near the edge of the filter screen frame 61 are connected to the inner wall of the filter screen frame 61 by hinge rotation, and the filter screen plates 62 located in the middle of the filter screen frame 61 are connected to the stop blocks 63 by hinge rotation. It can be understood that the number of the filter screen plates 62 is set to be multiple, so that the size of the filter screen plates 62 is relatively limited relative to the filter screen frame 61, and when the filter screen frame 61 is lifted upward, the filter screen plates 62 are rotated downward, and the debris and broken support in the filter screen frame 61 will not be discharged back into the resin tank 5.

[0031] Specifically, the snap device 4 includes an insertion rod 45, one end of which passes through the bracket arm 3 and is gap-matched with the limiting groove 44 provided at the lower part of the side wall of the filter screen frame 61. A snap ring 47 is snapped on the insertion rod 45 located on the outer side of the bracket arm 3, and a handle ring 48 is fixedly connected to the end of the insertion rod 45 away from the limiting groove 44. A spring 46 is also sleeved on the insertion rod 45, and the two ends of the spring 46 are respectively fixedly connected to the snap ring 47 and the outer wall of the bracket arm 3. It can be understood that by holding the handle ring 48 and pulling the insertion rod 45 outward, the end of the insertion rod 45 is disengaged from the limiting groove 44, which facilitates the removal of the filter screen frame 61 from the bracket arm 3; and the end of the insertion rod 45 is embedded in the limiting groove 44, which facilitates the installation of the filter screen frame 61 on the bracket arm 3.

[0032] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the invention.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0034] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The phrase appearing in various positions in the specification is not necessarily the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It can be understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Although the embodiments of the present invention have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purpose of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A SLA resin filtering device, characterized in that: include: A resin tank (5), wherein the resin tank (5) is used to contain liquid photosensitive resin; A filter device (6), the filter device (6) being placed in the resin tank (5), the filter device (6) comprising a filter screen frame (61), the filter screen frame (61) being open at the bottom and the top; A rotating screen plate (62), the rotating screen plate (62) being rotatably connected to the bottom of the filter screen frame (61), and a plurality of limit blocks (63) are also installed at the bottom of the filter screen frame (61); the upper surface of the limit block (63) is used to abut against the lower surface of the movable end of the rotating screen plate (62); A lifting device (2), the lifting device (2) being used to realize lifting of the filter device (6), the telescopic end of the lifting device (2) being fixedly connected to a supporting arm (3); A snap-fit ​​device (4), wherein the snap-fit ​​device (4) is used to detachably connect the support arm (3) and the filter device (6).

2. A SLA resin filtering device according to claim 1, characterized in that: The number of the rotating mesh plates (62) is four, the number of the limiting blocks (63) is three, the cross-sections of the two limiting blocks (63) are L-shaped, the rotating mesh plates (62) close to the edge of the filter mesh frame (61) are rotatably connected to the inner wall of the filter mesh frame (61) through hinges, and the rotating mesh plates (62) located in the middle of the filter mesh frame (61) are rotatably connected to the limiting blocks (63) through hinges.

3. The SLA resin filtering device according to claim 1, characterized in that: The snap-fit ​​device (4) comprises an insertion rod (45), one end of which passes through the support arm (3) and is gap-matched with a limiting groove (44) provided at the lower part of the side wall of the filter screen frame (61); a clamping ring (47) is clamped on the insertion rod (45) located on the outer side of the support arm (3); one end of the insertion rod (45) away from the limiting groove (44) is fixedly connected to a handle ring (48); a spring (46) is also sleeved on the insertion rod (45), and two ends of the spring (46) are respectively fixedly connected to the clamping ring (47) and the outer wall of the support arm (3).

4. A SLA resin filtering device according to claim 3, characterized in that: One end of the insertion rod (45) away from the limiting groove (44) is fixedly connected to a handle ring (48).

5. The SLA resin filtering device according to claim 1, characterized in that: The lifting device (2) may be an electric telescopic rod or a hydraulic cylinder.

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