CN219310003U

CN219310003U - Dewaxing device for 3D printing model

Info

Publication number: CN219310003U
Application number: CN202320852817.6U
Authority: CN
Inventors: 黄湘云; 郭俊健; 张斌
Original assignee: Xi'an Delan High Tech Materials Co ltd
Current assignee: Xi'an Delan High Tech Materials Co ltd
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2023-07-07
Anticipated expiration: 2033-04-17

Abstract

The utility model discloses a dewaxing device for a 3D printing model, which comprises a dewaxing kettle, a conveying pipe and Cheng Lacao, wherein the dewaxing kettle is of a closable structure, one end of the conveying pipe is communicated with the inside of the kettle body of the dewaxing kettle, the other end of the conveying pipe is communicated with a wax containing groove, and mixed liquid of 3D printing materials and wax liquid in the dewaxing kettle is conveyed to the wax containing groove through the conveying pipe under the action of pressure; cheng Lacao is provided with a separating device which comprises a shell, wherein the upper end of the shell is provided with a feed inlet communicated with a conveying pipe, the lower end of the shell is provided with a discharge outlet, the side wall of the interior of the shell is provided with separating plates at intervals along the vertical direction, each separating plate is obliquely arranged, and any two adjacent separating plates are oppositely arranged so that the mixed liquid on the upper separating plate falls onto the adjacent separating plate below; the back of each separating plate is provided with a heating plate, and the heating temperature is 130+/-5 ℃. According to the utility model, the 3D printing material is separated from the wax liquid by utilizing the separating plate, so that the 3D printing material is completely separated from the wax liquid.

Description

Dewaxing device for 3D printing model

Technical Field

The utility model relates to the technical field of precision casting, in particular to a dewaxing device for a 3D printing model.

Background

At present, the manufacturing process of combining the 3D printing model and the precision casting process is the most advanced in the existing precision casting process, the dewaxing process of the 3D printing model is very complex, and the two types of substances are very necessary to separate because of the wax liquid and the 3D printing model material.

The dewaxing temperature of the dewaxing process is 140-160 ℃, and the melting point of the 3D printing material is 160-180 ℃, so that the 3D printing material can be mixed with the wax liquid to flow out after dewaxing is finished, the 3D printing material is insoluble in the wax liquid and water and is formed into small blocks or large particles, if the small particles are not separated, the wax conveying pipeline is blocked, the small particles can be mixed in the wax liquid and continuously block the gun nozzle of the wax injection gun, and the wax liquid is scrapped or blocks the wax conveying pipeline.

The prior art CN213559734U also presents a technology of separating the two, but this technology has a certain disadvantage that the filter bag and the steam coil array are arranged at intervals, so that the temperature in the filter bag is not easy to control, the 3D printing material is melted and leaks, and the filter pore size of the filter bag is set according to the particle size of the 3D printing material after being melted, but the particle size of the 3D printing material is generally different from 1 to 100 μm, so that the leakage is unavoidable under the pore size of the filter bag of 1 to 10 mm. Thus, the separation in this patent is not complete, but there is still an unexpected escape of 3D printed material.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a dewaxing device for a 3D printing model.

In order to achieve the above purpose, the utility model provides a dewaxing device for a 3D printing model, comprising a dewaxing kettle, a conveying pipe and Cheng Lacao, wherein the dewaxing kettle is of a closable structure, one end of the conveying pipe is communicated with the inside of the kettle body of the dewaxing kettle, the other end of the conveying pipe is communicated with Cheng Lacao, and a mixed liquid of a 3D printing material and a wax liquid in the dewaxing kettle is conveyed to Cheng Lacao through the conveying pipe under the action of pressure;

the separating device is arranged in the Cheng Lacao and comprises a shell, a feeding port communicated with the conveying pipe is arranged at the upper end of the shell, a discharging port is arranged at the lower end of the shell, separating plates are arranged on the side wall of the interior of the shell at intervals along the vertical direction, each separating plate is obliquely arranged, and any two adjacent separating plates are oppositely arranged so that the mixed liquid on the upper separating plate falls onto the adjacent separating plate below; the back of each separation plate is provided with a heating plate, and the heating temperature is 130+/-5 ℃.

Preferably, the outer wall of the wax holding groove is sequentially provided with an electric heating wire and a heat preservation layer.

Preferably, an interlayer is arranged on the outer side of the hollow pipe of the conveying pipe, the mixed liquid is conveyed through the hollow pipe, and the interlayer is communicated with the air in the dewaxing kettle.

Preferably, the separator plate is corrugated in shape.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the dewaxing kettle is communicated with the separation chamber through the conveying pipe, the 3D printing material immersed in wax is heated and melted in the dewaxing kettle, then the mixed liquid is conveyed into the wax accommodating groove under the pressure action of the dewaxing kettle, and the 3D printing material is separated from the wax liquid by utilizing the separation plate, so that the 3D printing material is completely separated from the wax liquid.

Drawings

Fig. 1 is a block diagram of a dewaxing apparatus for a 3D printing model according to the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model is described in further detail below with reference to fig. 1:

referring to fig. 1, the utility model provides a dewaxing device for a 3D printing model, which comprises a dewaxing kettle 1, a conveying pipe 2 and a wax containing groove 3, wherein the dewaxing kettle 1 is of a closable structure, one end of the conveying pipe 2 is communicated with the kettle body of the dewaxing kettle 1, the other end of the conveying pipe is communicated with the wax containing groove 3, and a mixed liquid of a 3D printing material and wax liquid in the dewaxing kettle 1 is conveyed to the wax containing groove 3 through the conveying pipe 2 under the action of pressure;

specifically, the 3D printing model is subjected to a dewaxing process after the silica sol shell is manufactured, the 3D printing model and the shell are pushed into the dewaxing kettle 1 together for dewaxing during dewaxing, the device is taken out after the dewaxing is finished, and the 3D printing material and the wax liquid are conveyed to the next process.

The device comprises a shell 4, wherein the upper end of the shell 4 is provided with a feed inlet communicated with a conveying pipe 2, the lower end of the shell is provided with a discharge outlet, the side wall of the interior of the shell 4 is provided with separation plates 5 at intervals along the vertical direction, each separation plate 5 is obliquely arranged, and any two adjacent separation plates 5 are oppositely arranged so that mixed liquid on the upper separation plate 5 falls onto the adjacent separation plate 5 below; the back of each separation plate 5 is provided with a heating plate and the heating temperature is set to 130.+ -. 5 ℃. The temperature range is just that wax liquid can flow through rapidly, but the 3D material is in a semi-molten state and has very poor fluidity; in addition, the shape of the separation plate 5 is corrugated, so that the 3D printing material is more beneficial to blocking the downward sliding of the 3D material, and separation can be easily realized from the flow speed when the 3D printing material and the wax liquid pass through the separation plate 5.

In this embodiment, the heating wire and the heat-insulating layer 6 are sequentially arranged on the outer wall of the wax holding tank 3, so that the constant temperature of the wax liquid is further ensured not to solidify.

Further, an interlayer 22 is arranged outside the hollow tube 21 of the conveying pipe 2, the mixed 3D printing material and the wax liquid are conveyed through the hollow tube 21, and the interlayer 22 is communicated with the air in the dewaxing kettle 1. The hollow tube 21 is used for conveying a mixture of a 3D printing material and wax liquid, the interlayer 22 is in air communication with the dewaxing kettle 1, and heat exchange is realized between hot air in the dewaxing kettle 1 and the interlayer 22, so that the conveying tube 2 keeps the same temperature as the dewaxing kettle 1, and the wax liquid mixture cannot be solidified in the conveying process, and the normal conveying process is ensured.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The dewaxing device for the 3D printing model is characterized by comprising a dewaxing kettle, a conveying pipe and a Cheng Lacao, wherein the dewaxing kettle is of a closable structure, one end of the conveying pipe is communicated with the inside of the kettle body of the dewaxing kettle, the other end of the conveying pipe is communicated with Cheng Lacao, and mixed liquid of 3D printing materials and wax liquid in the dewaxing kettle is conveyed to Cheng Lacao through the conveying pipe under the action of pressure;

2. The dewaxing device of the 3D printing model according to claim 1, wherein an electric heating wire and an insulation layer are sequentially arranged on the outer wall of the wax holding groove.

3. The 3D printing model dewaxing device according to claim 1, wherein an interlayer is arranged on the outer side of the hollow pipe of the conveying pipe, the mixed liquid is conveyed through the hollow pipe, and the interlayer is communicated with the air in the dewaxing kettle.

4. The 3D printing model dewaxing device of claim 1, wherein the separator plate is corrugated in shape.