KR20210058001A - Molding chamber module and 3D printer having the same - Google Patents

Abstract

The present invention relates to a molding chamber module and a three-dimensional printer including the same. According to an embodiment of the present invention, in a mountable molding chamber module for a three-dimensional printer, a molding part for molding a product or a powder supply part for supplying raw material powder is placed in a movable casing. The molding part or the powder supply part includes: a powder container part storing the raw material powder; a heating part located adjacently to the outer side of the powder container part and generating heat to increase the temperature of the powder container part; an insulation part placed on the outer side of the heating part and blocking the heat generated from the heating part such that the heat cannot be delivered to the outside; and a driving part connected with the powder container part and driving the powder container part such that the part ascends or descends.

Description

Molding chamber module and 3D printer having the same

The present invention relates to a shaping chamber module of a three-dimensional printer, and more particularly, to a shaping chamber module having an appropriate preheating function and a three-dimensional printer having the same.

Conventionally, traditional processing methods such as casting or forging have been used to manufacture three-dimensional molded products. In addition, when using such a manufacturing method, in order to maintain the quality of the product, a worker with specialized knowledge had to perform this.

Recently, a 3D printer is starting to be used as a device for processing 3D molded products. 3D printers are gradually replacing traditional processing methods because of the advantage that even non-professionals can easily produce 3D molded products.

Among these three-dimensional printers, there is a three-dimensional printer that molds metal powder as a raw material. The metal 3D printer may not be formed satisfactorily due to the internal stress of the metal.

Meanwhile, in the current 3D printer, the concept of a molding chamber module that performs molding while replacing and moving the molding chamber is being introduced. Even in the case of the molding chamber module, the above problems may occur when metal powder is used as a raw material.

Accordingly, when metal powder is used as a raw material, it is necessary to study the molding chamber module to relieve the internal stress of the molded product.

Korean Patent Registration No. 10-1954019 (2019.02.25) Korean Patent Registration No. 10-1646773 (2016.08.02)

The present invention provides a molding chamber module capable of removing internal stress of a molded product and improving the quality of a molded product by configuring a molding chamber module to properly preheat raw material powder, and a 3D printer having the same.

In addition, detailed objects of the present invention will be clearly understood and understood by experts or researchers in this technical field through the detailed contents described below.

In order to solve the above problems, the present invention is an embodiment, as a molding chamber module of a 3D printer made to be mountable, a molding part for molding a product or a powder supply part for supplying raw material powder is disposed in a movable casing part, The molding unit or the powder supply unit includes a powder container part containing the raw material powder, a heating part positioned to be in contact with the outside of the powder container part and generating heat to increase the temperature of the powder container part, and disposed outside the heating part. A molding chamber module is provided that includes a heat insulating unit that blocks heat generated from a heating unit from being transferred to the outside, and a driving unit connected to the powder container and driving the powder container to rise or fall.

The forming chamber module may further include a cooling unit that performs a cooling function inside the casing unit, including a cooling pipe disposed outside the heat insulating unit.

In addition, the cooling unit includes a temperature sensing means for sensing the surrounding temperature, a cooling pipe disposed to pass through the outer side of the heat insulating unit and flowing coolant, a storage unit connected to the cooling pipe and storing cooling water supplied to the cooling pipe, and the It may include a pumping means that is installed in the cooling pipe and supplies the cooling water stored in the storage means to the cooling pipe or recovers the supplied cooling water to the storage means.

Meanwhile, the powder barrel part and the driving part may be connected through an insulating material.

In addition, a door capable of sliding and opening and closing may be provided on the upper side of the casing, and the door may be opened during molding so that a light beam may be irradiated into the open space.

On the other hand, in order to solve the above problem, the present invention is an embodiment, the body in which the mounting space is formed, the above-described molding chamber module mounted in the mounting space of the body and in which the powder supply unit is disposed, The above-described molding chamber module disposed, a powder moving part for moving the raw material powder supplied from the powder supply part to the molding part, and a light beam processing part mounted on the body and for processing a molded product by irradiating a light beam to the molding part of the molding chamber module It presents a 3D printer including.

According to an embodiment of the present invention, since the raw material powder can be appropriately preheated in the molding chamber module, the internal stress of the molded product can be relieved, and further, a molded product having excellent quality can be obtained.

Other effects of the present invention will be clearly understood and understood by experts or researchers in this technical field during the process of carrying out the present invention or through the detailed contents described below.

1 is a perspective view showing a shaping chamber module according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the forming chamber module shown in Figure 1;
3 is a schematic view showing a three-dimensional printer in which the forming chamber module shown in FIG. 1 is mounted.

The features and effects of the present invention described above will become more apparent through the following detailed description in connection with the accompanying drawings, and accordingly, those of ordinary skill in the technical field to which the present invention pertains can easily implement the technical idea of the present invention. I will be able to. In the present invention, various modifications may be made and various forms may be applied, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form of disclosure, and it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention.

Hereinafter, a forming chamber module according to an embodiment of the present invention and a 3D printer having the same will be described in detail with reference to the drawings. In the present specification, the same reference numerals are assigned to the same and similar configurations even in different embodiments, and the description is replaced with the first description.

1 is a perspective view showing a shaping chamber module according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing the shaping chamber module according to an embodiment of the present invention.

The molding chamber module 100 according to an embodiment of the present invention is a molding chamber module 100 of a 3D printer 200 made to be detachable and mounted, and a product is molded in a movable casing part 6. The molding unit 10 or the powder supply unit 20 to which the raw material powder is supplied is disposed.

In addition, the molding unit 10 or the powder supply unit 20 includes a powder barrel unit 1, a heating unit 2, a heat insulation unit 3 and a driving unit 4, and further includes a cooling unit 5 I can.

The powder container 1 contains raw material powder. The heating unit 2 is positioned to be in contact with the outside of the powder container 1 and generates heat to increase the temperature of the powder container 1. Meanwhile, the heat insulating part 3 is disposed outside the heating part 2 and blocks heat generated from the heating part 2 from being transferred to the outside. In addition, the drive unit 4 is connected to the powder container 1 and drives the powder container 1 to rise or fall.

Since the molding chamber module configured as described above can properly preheat the raw material powder, it is possible to relieve the internal stress of the molded product, and furthermore, it is possible to obtain a molded product of excellent quality.

Hereinafter, the configuration of each unit will be described in detail with reference to the drawings.

The powder barrel 1 is a configuration in which raw material powder is contained. In the 3D printer 200, a portion containing powder includes a molding unit 10 and a powder supply unit 20. In the powder supply unit 20, the bottom surface 11 rises while the raw material powder is contained to supply a certain amount of raw material powder into the chamber. In the molding unit 10, the bottom surface 11 descends and the powder moving unit 30 ) To receive the powder moved from the powder supply unit 20, and is formed by irradiating a light beam.

The powder barrel part 1 is configured to be applied to the molding part 10 and the powder supply part 20 as described above, and the bottom surface 11 is made to be able to rise or fall by a driving part 4 to be described later.

The heating unit 2 is configured to generate heat to heat the powder container unit 1. As heat is generated in the heating unit 2, the powder container 1 is heated together, and accordingly, the raw material powder contained in the powder container 1 can be heated to a temperature at which the raw material powder can be smoothly molded. In addition, you can increase the ambient temperature of the molded product so that the molded product cools slowly after the molding is completed.

The heating unit 2 may be provided with a heat cartridge 21 that is a heat generating means using electricity to heat the powder barrel unit 1. The heat cartridge 21 may be selectively installed on the four side surfaces of the powder container 1 and the bottom surface 11 of the powder container 1.

On the other hand, the heating unit 2 may be controlled to maintain an appropriate temperature by providing a temperature sensor (not shown). It is preferable that the heating unit 2 can generate heat of about 300 degrees.

In the case of a metal printer, molding may not be satisfactory due to the internal stress of the metal. In addition, when internal stress is generated in the molded product, the quality deteriorates and defects are caused.

When preheating using the heating part, the melting of the raw material powder is facilitated during molding, and the molded product can be cooled slowly after the molding is completed, so stress can be reduced by 50% or more.

The heat insulator 3 is configured to block the heat generated from the heating part 2 from being transferred to the outside. While heat loss generated in the heating part 2 is minimized by the heat insulation part 3, damage can be prevented by preventing other components other than the powder container part 1 from being heated.

The heat insulation part 3 may be an insulation material employing a flame-retardant or non-flammable material capable of resisting the heat of the heating part 2 and withstand high temperatures, and a non-asbestos-based insulation material that is harmless to the human body may be used.

The drive unit 4 is configured to raise or lower the bottom surface 11 of the powder container 1. In this embodiment, the driving unit 4 is included in the shaping chamber module 100. Since the driving unit 4 is included in the shaping chamber module 100, alignment of the driving unit 4 and the powder container 1 is not required. In addition, the removal and installation of the molding chamber module 100 is facilitated.

Meanwhile, the powder barrel part 1 and the driving part 4 may be connected through an insulating material 41. The powder barrel part 1 is heated to a high temperature by the heating part 2 and the heat generated at this time is transferred to the driving part 4 to cause damage to the driving part 4.

Therefore, this problem can be solved by connecting the powder barrel 1 and the driving unit 4 through the heat insulating material 41. The interposed heat insulating material 41 may use a heat insulating material formed in a coupling shape, and as a heat insulating material employing a flame-retardant or non-flammable material, like the heat insulating material of the heat insulating portion, a non-asbestos-based heat insulating material may be used.

The cooling unit 5 includes a cooling pipe 52 disposed outside the heat insulation unit 3 and performs a cooling function inside the casing unit 6. The cooling unit 5 may include a temperature sensing means 51, a cooling pipe 52, a storage means 53, and a pumping means 54.

The temperature sensing means 51 senses the surrounding temperature. Specifically, the temperature sensing means 51 may be mounted inside the casing 6 to detect the temperature inside the casing 6. The cooling pipe 52 is disposed so as to pass through the outside of the heat insulating part 3, and cooling water may flow through the cooling pipe 52.

In this embodiment, the cooling pipe 52 is in the form of a two-layered conduit starting from the rear side of the powder container 1, moving the entire side of the powder container 1 in sequence, and then returning to the rear surface of the powder container 1 Done.

According to the temperature sensed by the temperature sensing means 51, the cooling water flows through the cooling pipe 52 to lower the temperature inside the casing 6. The cooling pipe 52 may be made of a copper pipe.

Meanwhile, the storage means 53 is connected to the cooling pipe 52 and the cooling water supplied to the cooling pipe 52 is stored. In addition, the pumping means 54 is installed in the cooling pipe 52, and the cooling water stored in the storage means 53 is supplied to the cooling pipe 52 or the supplied cooling water is recovered to the storage means 53 to enable circulation of the cooling water. Let's do it.

The cooling part 5 can prevent the temperature inside the casing part 6 from rising, and it is possible to properly maintain the temperature inside the forming chamber module 100.

In addition, it is possible to cover and close the finishing member 7 so as to surround the heat insulating part 3 to the outside in which the heat insulating part 3 and the cooling pipe 52 are arranged in the powder barrel part 1.

The above-described molding part 10 or powder supply part 20 is disposed and mounted on the casing part 6, and accordingly, the powder container part constituting the molding part 10 or the powder moving part 30 in the casing part 6 ( 1), a heating unit 2, a heat insulation unit 3, a driving unit 4, and a cooling unit 5 may be provided.

Meanwhile, a mounting structure for coupling between the forming chamber modules 100 or a mounting structure for coupling with the 3D printer 200 having a mounting seat may be installed in the casing 6.

In addition, a door capable of sliding and opening and closing may be provided on the upper side of the casing, and the door may be opened during molding so that a light beam may be irradiated into the open space.

In addition, a control unit 40 may be provided to control each component. Here, the control unit 40 is disposed in the casing unit 6 to control the heating unit 2 and the cooling unit 5 according to the temperature sensed by each temperature sensing means in particular to control the powder container unit 1 and the casing unit ( 6) It can be controlled so that the inside is maintained at an appropriate temperature.

Hereinafter, the 3D printer 200 in which the above-described shaping chamber module 100 is mounted will be described in detail with reference to the drawings.

3 is a schematic diagram showing a 3D printer equipped with a forming chamber module according to an embodiment of the present invention.

The 3D printer 200 according to the embodiment of the present invention includes a body 60, a molding chamber module 100 in which the powder supply unit 20 is disposed, a molding chamber module 100 in which the molding part 10 is disposed, and a powder. It includes a moving unit 30 and a light beam processing unit 50.

The body 60 may be provided with various mounting structures for stably fixing the forming chamber module 100 and forming a mounting space for mounting the forming chamber module 100. Accordingly, the forming chamber module 100 may be stably mounted in the mounting space of the body 60.

In addition, the molding chamber module 100 in which the powder supply unit 20 is disposed, and the molding chamber module 100 in which the molding part 10 is disposed may be sequentially mounted.

The powder moving unit 30 moves the raw material powder supplied from the powder supply unit 20 to the molding unit. Unlike the molding chamber module 100, the powder moving part 30 is already mounted on the body 60. The detailed configuration of the powder moving part 30 may be the same as that already known, so a detailed description thereof will be omitted.

The light beam processing unit 50 processes a molded product by irradiating a light beam onto the molding unit 10 of the shaping chamber module 100 mounted on the body 60. The light beam processing part 50 is already mounted on the body 60 like the powder moving part 30. Since the detailed configuration of the light beam processing unit 50 for irradiating the light beam may also employ the same known one, a detailed description thereof will be omitted.

While the shaping chamber module 100 is moving, the raw material powder may be preheated and may be molded immediately after being mounted on the body 60. Meanwhile, the controller 40 of the shaping chamber module 100 exchanges data with a controller of another shaping chamber module 100 or another controller that controls the light beam processing unit 50 and the powder supply unit 20 through wired/wireless communication. The molding process may be performed by operating the powder supply unit 20 and the driving unit 4 and the powder moving unit 30 of the molding unit 10.

As described above, the forming chamber module and the 3D printer having the same according to the embodiment of the present invention are not limited to the configuration and method of the above-described embodiments, but the above embodiments are All or some of the embodiments may be selectively combined and configured.

In the detailed description of the present invention described above, it has been described with reference to preferred embodiments of the present invention, but those skilled in the art or those of ordinary skill in the art, the spirit of the present invention described in the claims to be described later. And it will be understood that various modifications and changes can be made to the present invention within a range not departing from the technical field.

1: powder container 11: bottom surface
2: heating unit 21: heat cartridge
3: insulation
4: drive part 41: insulation
5: cooling unit
51: temperature sensing means 52: cooling pipe 53: storage means 54: pumping means
6: casing part
7: finishing member
10: molding unit 20: powder supply unit 30: powder moving unit 40: control unit
50: light beam processing unit 60: body
100: forming chamber module 200: 3D printer

Claims (5)

As a forming chamber module of a 3D printer made to be mounted,
A molding part in which a product is molded or a powder supply part in which raw material powder is supplied are arranged in the movable casing part,
The molding part or the powder supply part,
A powder barrel portion containing the raw material powder,
A heating part positioned to be in contact with the outside of the powder container and generating heat to increase the temperature of the powder container part,
An insulating part disposed outside the heating part and blocking heat generated from the heating part from being transferred to the outside, and
A driving unit connected to the powder container and driving the powder container to rise or fall
Forming chamber module comprising a. The method of claim 1,
A molding chamber module further comprising a cooling unit for performing a cooling function inside the casing unit, including a cooling pipe disposed outside the heat insulation unit. The method of claim 2,
The cooling unit,
Temperature sensing means for sensing the surrounding temperature,
A cooling pipe disposed to pass through the outside of the heat insulating part and flowing coolant,
A storage means connected to the cooling pipe and storing cooling water supplied to the cooling pipe; and
Pumping means installed in the cooling pipe and supplying the cooling water stored in the storage means to the cooling pipe or recovering the supplied cooling water to the storage means
Forming chamber module comprising a. The method of claim 1,
The molding chamber module is connected to the powder barrel part and the driving part through a heat insulator. The body in which the mounting space is formed,
The molding chamber module of any one of claims 1 to 5 mounted in the mounting space of the body and in which the powder supply unit is disposed,
The molding chamber module according to any one of claims 1 to 5 mounted in the window mounting space of the body and in which a molding part is arranged
A powder moving unit for moving the raw material powder supplied from the powder supply unit to the molding unit; and
A light beam processing unit mounted on the body and for processing a molded product by irradiating a light beam to a molding portion of the shaping chamber module
3D printer comprising a.

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