Curing and degreasing device for binder jet 3D printing
By using a vacuum pump and vent structure in the binder jet 3D printing device, the problem of excessive curing time was solved, enabling rapid curing and efficient production, and improving the surface quality of the product.
Patent Information
- Application Number
- CN202423120609.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing adhesive jet 3D printing has a long curing time, especially for products with greater height, the curing time increases exponentially, resulting in low production efficiency.
A curing oven with negative pressure created by a vacuum pump, combined with a load-bearing frame, ventilation holes, and collection chamber structure inside the printing chamber, quickly discharges the decomposed adhesive and moisture, shortening the curing time.
The negative pressure and ventilation structure created by the vacuum pump quickly remove adhesive and moisture, shorten curing time, improve production efficiency, save energy, and enhance product surface quality.
Smart Images
Figure CN223671864U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to three -dimensional printing debinding technical field especially relates to a kind of binder jetting 3D printing's solidification debinding device. BACKGROUND
[0002] 3D printing (3DP) is also called Additive Manufacturing Technologies (AM), is with computer three-dimensional design model as blueprint, through software layering discrete and numerical control forming system, using laser beam, hot melt nozzle etc. Metal powder, ceramic powder, plastics, cell tissue etc. Special material is stacked and bonded layer by layer, and finally is formed by stacking, and solid product is manufactured. In binder jetting 3D printing, printing bin is the rectangular cylinder of front opening, existing solidification time is longer, some more than 40 hours, especially when the height of printing product is too high, the time required for solidification is multiplied, and production efficiency is greatly reduced. Therefore, improvement is needed. UTILITY MODEL CONTENT
[0003] The utility model aims at providing a kind of binder jetting 3D printing's solidification debinding device to overcome the deficiencies in the prior art.
[0004] To achieve the above object, the utility model provides the following technical scheme:
[0005] The utility model embodiment discloses a kind of binder jetting 3D printing's solidification debinding device, including the solidification furnace of horizontal arrangement and the printing bin being set in the solidification furnace, the outside of the solidification furnace is provided with vacuum pump, the vacuum pump is communicated in the inside of the solidification furnace, and processing device is arranged between the vacuum pump and the solidification furnace.
[0006] Further, in the above-mentioned binder jetting 3D printing's solidification debinding device, the top end opening of the printing bin is arranged, and the inner wall of the printing bin is provided with a load-bearing frame close to one end of the bottom.
[0007] Further, in the above-mentioned binder jetting 3D printing's solidification debinding device, the load-bearing frame includes a load-bearing skeleton fixed to the inner wall of the printing bin and a plurality of load-bearing screen meshes stacked on the load-bearing skeleton.
[0008] Further, in the above-mentioned binder jetting 3D printing's solidification debinding device, the load-bearing frame and the bottom of the printing bin form a collection cavity.
[0009] Further, in the above-mentioned binder jetting 3D printing's solidification debinding device, the processing device is communicated with the collection cavity through a pipeline.
[0010] Further, in the above-mentioned binder jet 3D printing solidification and debinding device, the side walls of the printing chamber are uniformly provided with a plurality of ventilation holes.
[0011] Further, in the above-mentioned binder jet 3D printing solidification and debinding device, the ventilation holes are obliquely upwardly arranged along the direction from the inner wall to the outer wall of the printing chamber, and form an angle of 60° with the horizontal plane, and the diameter of the ventilation holes is 1-3mm.
[0012] Compared with the prior art, the advantages of the present application are that:
[0013] The binder jet 3D printing solidification and debinding device has the advantages of simple structure, negative pressure formed in the solidification furnace by the vacuum pump, rapid discharge of decomposed binder and moisture, shortened solidification time, improved efficiency, saved energy, rapid discharge of evaporated binder and moisture through the uniformly distributed ventilation holes on the surface of the printing chamber, avoidance of secondary adhesion on the product, and improved surface quality of the product. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0015] Figure 1 Fig. 1 is a structural schematic view of a binder jet 3D printing solidification and debinding device in an embodiment of the present application.
[0016] Figure 2 Fig. 2 is a structural schematic view of a bearing frame in an embodiment of the present application.
[0017] Figure 3 Fig. 3 is a structural schematic view of a ventilation hole in an embodiment of the present application. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0019] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.
[0020] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation", "connection", "connect" should be broad sense, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0021] Referring to Figures 1 to 3 As shown in FIG. 1, a kind of binder jet 3D printing solidification debinding device, including the solidification furnace 1 of horizontal arrangement and the printing bin 2 of being arranged in solidification furnace 1, the outside of solidification furnace 1 is provided with vacuum pump 3, vacuum pump 3 is communicated in the inside of solidification furnace 1, and processing device 4 is arranged between vacuum pump 3 and solidification furnace 1.
[0022] In the technical scheme, the solidification furnace includes furnace body and the furnace door that can be opened and closed, and the specific structure belongs to prior art, which will not be described here, after the printing bin is put into the solidification furnace, negative pressure is formed by vacuum pump, i.e. the air pressure in the solidification furnace is lower than the air pressure in the solidification furnace, during the process that the solidification furnace heats the product in the printing bin, the decomposed binder and moisture flow out and enter the processing device, the processing device is a drying machine or a filter device, etc. conventional device, the decomposed binder and moisture are collected / adsorbed, to avoid the decomposed binder and moisture from blocking / polluting the vacuum pump;The binder jet 3D printing solidification debinding device described in the utility model has simple structure, and the vacuum pump forms negative pressure in the solidification furnace, which is beneficial to the rapid flow of the decomposed binder and moisture, shortens the solidification time, improves the efficiency and saves energy.
[0023] Exemplarily, referring to Figure 1 And Figure 2 As shown in FIG. 1, the top end opening of the printing bin 2 is provided, and the inner wall of the printing bin 2 is provided with a bearing frame 5 close to one end of the bottom.
[0024] In the technical scheme, the top end opening of the printing bin is used for normal operation of powder falling and the like, and the bearing frame is used for supporting the printed product.
[0025] Exemplarily, referring to Figure 2As shown, the load-bearing frame 5 includes a load-bearing skeleton 51 fixed to the inner wall of the printing chamber 2 and a plurality of load-bearing screens 52 stacked on the load-bearing skeleton 51.
[0026] In this technical solution, the load-bearing skeleton is a conventional profile spliced together to provide sufficient support for the printed product, avoiding the collapse or collapse of the load-bearing screen during printing due to the high height of the product and the deformation of the load-bearing screen. The load-bearing screen is a multi-layer stacked structure and is fixed to the load-bearing skeleton by welding or other means, allowing the bottom of the printing chamber to be ventilated, which facilitates the circulation of gas in the printing chamber.
[0027] For example, see Figure 1 As shown, a collection cavity 6 is formed between the load-bearing frame 5 and the bottom of the printing chamber 2.
[0028] In this technical solution, the collection cavity is assembled by conventional plates and the like, and the top is open. The collection cavity is directly fixed to the bottom of the printing chamber by welding or other means, or is provided at the bottom of the curing furnace. The load-bearing frame at the bottom of the printing chamber is directly seated on the top of the collection cavity, and the specific structure is not required as long as the vacuum pump can act on the bottom of the printing chamber through the collection cavity.
[0029] For example, see Figure 1 As shown, the processing device 4 is connected to the collection cavity 6 through the pipeline 7.
[0030] In this technical solution, the pipeline is of a conventional structure, which penetrates the side wall of the curing furnace and is connected to the inside of the collection cavity. The pipeline and the side wall of the curing furnace are sealed by welding or other means. The corresponding side wall of the collection cavity can also be provided with a quick connector or the like to facilitate connection with the pipeline. The decomposed binder and moisture permeate from the multi-layer load-bearing screen at the bottom of the printing chamber into the collection cavity and are drawn away by the vacuum pump through the pipeline. When passing through the processing device, the decomposed binder and moisture are collected / adsorbed, avoiding the decomposed binder and moisture from clogging / polluting the vacuum pump.
[0031] For example, see Figure 1 and Figure 3 As shown, the side wall of the printing chamber 2 is evenly provided with a plurality of ventilation holes 21.
[0032] In this technical solution, the ventilation holes evenly distributed on the surface of the printing chamber can also quickly discharge the evaporated binder and moisture, avoiding secondary adhesion to the product, thereby improving the surface quality of the product.
[0033] For example, see Figure 1 and Figure 3 As shown, the ventilation holes 21 are obliquely upwardly arranged in the direction from the inner wall to the outer wall of the printing chamber 2, and form an angle of 60° with the horizontal plane. The diameter of the ventilation hole is 1-3 mm.
[0034] In the technical scheme, the ventilation hole is arranged obliquely upward, so that the decomposed binder and moisture are prevented from flowing out of the printing bin through the ventilation hole during movement to the collecting cavity, the binder and moisture are beneficially discharged from the bottom of the printing bin and discharged through the collecting cavity and the pipeline, and the surface quality of the product is improved.
[0035] In conclusion, the solidification and debinding device for the binder jetting 3D printing has simple structure, the vacuum pump forms negative pressure in the solidification furnace, the decomposed binder and moisture are rapidly discharged, the solidification time is shortened, the efficiency is improved, energy is saved, the binder and moisture evaporated can also be rapidly discharged through the ventilation holes uniformly distributed on the surface of the printing bin, the binder is prevented from being attached to the product again, and the surface quality of the product is improved.
[0036] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.
[0037] The above description is merely a specific implementation of the present application, and it should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as falling within the scope of protection of the present application.
Claims
1. A cured de-binding apparatus for binder jet 3D printing, characterized by, The application relates to a printing device comprising a horizontally arranged curing furnace and a printing bin arranged in the curing furnace, wherein the outer side of the curing furnace is provided with a vacuum pump which is communicated with the interior of the curing furnace and is provided with a treatment device between the curing furnace.
2. A cured de-binding apparatus for binder jet 3D printed parts according to claim 1, wherein: The top end of the printing bin is open, and the inner wall of the printing bin is provided with a load-bearing frame near one end of the bottom.
3. A cured de-binding apparatus for binder jet 3D printed parts according to claim 2, wherein: The load-bearing frame comprises a load-bearing framework fixed to the inner wall of the printing bin and a plurality of load-bearing screens stacked on the load-bearing framework.
4. The cured de-binding apparatus for binder jet 3D printed parts of claim 2, wherein: A collecting cavity is formed between the load-bearing frame and the bottom of the printing bin.
5. The cured de-binding apparatus for binder jet 3D printed parts of claim 4, wherein: The treatment device is communicated with the collecting cavity through a pipeline.
6. The cured de-binding apparatus for binder jet 3D printed parts of claim 1, wherein: The side wall of the printing bin is uniformly provided with a plurality of ventilation holes.
7. The cured de-binding apparatus for binder jet 3D printed parts of claim 6, wherein: The ventilation holes are arranged obliquely upward along the direction from the inner wall to the outer wall of the printing bin and form an angle of 60 DEG with the horizontal plane, and the diameter of the ventilation holes is 1-3 mm.