Thermostatic mechanism of photocuring printer

Abstract

The utility model relates to the field of 3d printers, and particularly discloses a photocuring printer constant temperature mechanism, which comprises a workbench, a control center, a lifting mechanism, a printing groove, a storage groove, a peristaltic pump and a constant temperature unit, the peristaltic pump drives resin to circularly flow in the printing groove and the storage groove, and the constant temperature unit is separated from or immersed in the resin in the storage groove in a lifting manner. The pipeline of the peristaltic pump is flexibly connected with the edge of the printing groove, and after the constant-temperature unit is arranged in the storage groove, the constant-temperature unit does not hinder the lifting motion of the printing plate and does not hinder the swinging of the printing groove. When in use, the resin can flow slowly, and the temperature of the resin can be maintained at 20-30 DEG C.

Description

Technical Field

[0001] The utility model belongs to the field of 3D printers, and particularly relates to a constant temperature mechanism of a light-curing printer. Background Art

[0002] Light-curing 3D printing uses photosensitive resin materials, which can perform optimally at 20-30°C. Temperatures beyond this range will cause the performance of the printed product materials to decay. The conventional constant temperature method is to inject hot air into the closed printing chamber, that is, to use air as a heat transfer medium to indirectly increase the temperature of the photosensitive resin. In the traditional solution, the space in the printing chamber is large, the heating efficiency of the hot air is low, and an unpleasant odor is emitted every time the printing chamber door is opened. Other solutions are to set a heating tube on the side wall of the resin tank. At this time, there are also two problems. After the heating tube is set, it is inconvenient to remove the resin tank for cleaning. In order not to interfere with 3D printing, the heating tube can only be attached to the edge, resulting in a slight temperature difference between the resin in the inner and outer areas of the resin tank. Utility Model Content

[0003] The utility model aims to provide a constant temperature mechanism for a light-curing printer which can stably and efficiently heat resin.

[0004] To achieve the above-mentioned purpose, the utility model provides a constant temperature mechanism of a photocuring printer, comprising a workbench, a control center and a lifting mechanism arranged on the side of the workbench, wherein the workbench is provided with a printing slot below the lifting mechanism and a storage slot below the lifting mechanism, wherein the depth of the printing slot is less than the depth of the storage slot, and a constant temperature unit is detachably provided on the inner side of the storage slot, and the constant temperature mechanism also comprises two peristaltic pumps, which are electrically connected to the control center, and the inlets and outlets of the two peristaltic pumps are respectively arranged at the printing slot and the storage slot, so as to drive the circulation of resin between the printing slot and the storage slot, and the resin is heated to a set temperature by the constant temperature unit in the storage slot.

[0005] As an improvement of the above solution, the liquid inlet and the return port of the peristaltic pump are placed in the printing tank at diagonal positions respectively.

[0006] As an improvement of the above solution, a first clamp is detachably provided on the side wall of the printing slot, and the first clamp is used to temporarily fix the peristaltic pump to the pipeline of the printing slot.

[0007] As an improvement of the above solution, the first clamp is made of elastically deformable rubber material, a recessed groove is provided on the side wall of the printing slot, and the first clamp is inserted into the recessed groove after elastic deformation to achieve a temporary connection.

[0008] As an improvement of the above solution, the side wall of the storage tank is provided with four second clamps, two of which continuously fix the liquid inlet and the reflux port of the peristaltic pump, and when the printing tank is removed, the other two of which temporarily fix the liquid inlet and the reflux port of the peristaltic pump.

[0009] As an improvement of the above-mentioned scheme, the constant temperature unit includes a slide groove, a slide table, a fixing bolt, a cantilever and a heating tube. The slide groove is vertically arranged, and the slide table can be raised and lowered under the guidance of the slide table. The fixing bolt is arranged on the side of the slide table. After the fixing bolt passes through the slide table, it presses against the side of the slide groove to lock the position of the slide groove and the slide table. One end of the cantilever is connected to the slide table, and the cantilever is located above the storage tank. The heating tube is fixed to the cantilever. When the cantilever is raised and lowered, the heating tube is detached from or immersed in resin.

[0010] As an improvement of the above solution, a temperature sensor is also provided on the cantilever, and the temperature sensor is electrically connected to the control center.

[0011] The utility model has the following beneficial effects: two peristaltic pumps promote the flow of resin between the storage tank and the printing tank, the pipe of the peristaltic pump is flexibly connected to the edge of the printing tank, and after the constant temperature unit is set in the storage tank, the constant temperature unit will neither hinder the lifting and lowering movement of the printing plate (this design can free up a lot of printing space) nor hinder the swing of the printing tank (this action is used to separate different printing layers to improve printing quality). When in use, the resin can be allowed to flow slowly to achieve gradual heat exchange, or the printing action can be temporarily stopped to allow the resin to flow quickly to achieve preheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a stereogram of a thermostatic mechanism under an embodiment;

[0013] Explanation of the reference numerals: 10, workbench; 20, control center; 30, lifting mechanism; 41, printing tank; 42, storage tank; 51, peristaltic pump; 52, first clamp; 61, slide; 62, slide; 63, fastening bolt; 64, cantilever; 65, heating tube. DETAILED DESCRIPTION

[0014] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0015] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.

[0017] Reference Figure 1 The utility model discloses a constant temperature mechanism of a photocuring printer, comprising a workbench 10, a control center 20 arranged on the side of the workbench 10, and a lifting mechanism. The workbench 10 is provided with a printing slot 41 below the lifting mechanism 30, and a storage slot 42 is provided below the lifting mechanism 30. The depth of the printing slot 41 is less than the depth of the storage slot 42. A constant temperature unit is detachably provided inside the storage slot 42. The constant temperature mechanism also includes two peristaltic pumps 51. The two peristaltic pumps 51 are electrically connected to the control center 20. The inlet and outlet of the two peristaltic pumps 51 are respectively provided at the printing slot 41 and the storage slot 42, and are used to drive the circulation of resin between the printing slot 41 and the storage slot 42. The resin is heated by the constant temperature unit in the storage slot 42. An interactive screen is provided on the front of the control center 20. The lifting mechanism 30 is not connected to the printing plate.

[0018] Two peristaltic pumps 51 promote the flow of resin between the storage tank 42 and the printing tank 41. The pipe of the peristaltic pump 51 is flexibly connected to the edge of the printing tank 41. After the constant temperature unit is set in the storage tank 42, the constant temperature unit will neither hinder the lifting and lowering movement of the printing plate (this design can free up a lot of printing space) nor hinder the swinging of the printing tank 41 (this action is used to separate different printing layers to improve printing quality). When in use, the resin can be allowed to flow slowly to achieve gradual heat exchange, or the printing action can be temporarily stopped to allow the resin to flow quickly to achieve preheating.

[0019] As an improvement of the above solution, the constant temperature mechanism also includes a transparent cover for covering the above components, which is used to reduce the diffusion of harmful gases and maintain the temperature inside the transparent cover. Furthermore, the transparent cover is provided with a hot air inlet and an exhaust port, the hot air inlet is used to blow in a small amount of hot air to prevent the resin temperature of the printing slot 41 from losing quickly, and the exhaust port is provided with a filter element for absorbing harmful gases.

[0020] As an improvement of the above solution, the peristaltic pump 51 is placed at the diagonal positions of the liquid inlet and the return port of the printing tank 41. The above solution helps the resin to flow fully in the printing tank 41.

[0021] As an improvement of the above solution, a first clamp 52 is detachably provided on the side wall of the printing slot 41 , and the first clamp 52 is used to temporarily fix the peristaltic pump 51 to the pipeline of the printing slot 41 .

[0022] As an improvement of the above solution, the first clamp 52 is made of elastically deformable rubber material, and a recess is provided on the side wall of the printing slot 41. The first clamp 52 is elastically deformed and inserted into the recess to achieve a temporary connection. An arc-shaped notch is provided on the upper side of the first clamp 52. The arc-shaped notch can be widened when subjected to external force, and can be narrowed when the external force is released, thereby clamping the pipeline of the peristaltic pump 51.

[0023] As an improvement of the above solution, the side wall of the storage tank 42 is provided with four second clamps, two of which continuously fix the liquid inlet and the reflux port of the peristaltic pump 51. When the printing tank 41 is removed, the other two of the second clamps temporarily fix the liquid inlet and the reflux port of the peristaltic pump 51 to prevent resin from dripping and contaminating other locations.

[0024] As an improvement of the above scheme, the constant temperature unit includes a slide 61, a slide 62, a fixing bolt 63, a cantilever 64 and a heating tube 65. The slide 61 is vertically arranged, and the slide 62 can be raised and lowered under the guidance of the slide 62. The fixing bolt 63 is arranged on the side of the slide 62. The fixing bolt 63 passes through the slide 62 and then abuts against the side of the slide 61 to lock the position of the slide 61 and the slide 62. One end of the cantilever 64 is connected to the slide 62, and the cantilever 64 is located above the storage tank 42. The heating tube 65 is fixed to the cantilever 64. When the cantilever 64 is raised and lowered, the heating tube 65 is detached from or immersed in the resin.

[0025] As an improvement of the above solution, a temperature sensor is further provided on the cantilever 64, and the temperature sensor is electrically connected to the control center 20. The temperature sensor is immersed in the resin along with the constant temperature unit.

[0026] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A constant temperature mechanism for a light-curing printer, comprising a workbench, a control center arranged on the side of the workbench, and a lifting mechanism, characterized in that: The workbench is provided with a printing slot below the lifting mechanism and a storage slot below the lifting mechanism. The depth of the printing slot is less than the depth of the storage slot. A constant temperature unit is detachably provided on the inner side of the storage slot. The constant temperature mechanism also includes two peristaltic pumps. The two peristaltic pumps are electrically connected to the control center. The inlet and outlet of the two peristaltic pumps are respectively provided at the printing slot and the storage slot, so as to drive the circulation of resin between the printing slot and the storage slot. The resin is heated to a set temperature by the constant temperature unit in the storage slot.

2. The constant temperature mechanism of the light-curing printer according to claim 1, characterized in that: The peristaltic pump is placed on the printing tank, and the liquid inlet and the return port are respectively located at diagonal positions.

3. The constant temperature mechanism of the light-curing printer according to claim 2, characterized in that: The side wall of the printing slot is detachably provided with a first clamp, and the first clamp is used to temporarily fix the peristaltic pump to the pipeline of the printing slot.

4. The constant temperature mechanism of the light-curing printer according to claim 3, characterized in that: The first clamp is made of elastically deformable rubber material, and a sink groove is arranged on the side wall of the printing slot. The first clamp is inserted into the sink groove after being elastically deformed to achieve temporary connection.

5. The constant temperature mechanism of the light-curing printer according to claim 4, characterized in that: The side wall of the storage tank is provided with four second clamps, two of which continuously fix the liquid inlet and the return port of the peristaltic pump, and when the printing tank is removed, the other two of which temporarily fix the liquid inlet and the return port of the peristaltic pump.

6. The constant temperature mechanism of a light-curing printer according to claim 1, characterized in that: The constant temperature unit includes a slide, a slide, a fixing bolt, a cantilever and a heating tube. The slide is vertically arranged, and the slide can be raised and lowered under the guidance of the slide. The fixing bolt is arranged on the side of the slide. After the fixing bolt passes through the slide, it abuts against the side of the slide to lock the position of the slide and the slide. One end of the cantilever is connected to the slide. The cantilever is located above the storage tank. The heating tube is fixed to the cantilever. When the cantilever is raised and lowered, the heating tube is detached from or immersed in resin.

7. The constant temperature mechanism of the light-curing printer according to claim 6, characterized in that: A temperature sensor is also provided on the cantilever, and the temperature sensor is electrically connected to the control center.

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