CN110978517A

CN110978517A - Constant temperature system of LCD 3D printer

Info

Publication number: CN110978517A
Application number: CN201911367840.0A
Authority: CN
Inventors: 林联松; 李朝辉
Original assignee: Shenzhen Aurora Technology Co Ltd
Current assignee: Shenzhen Aurora Technology Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-04-10

Abstract

The invention discloses a constant temperature system of an LCD 3D printer, which comprises a material pool, a peristaltic pump and a semiconductor refrigerator which are connected with each other by water pipes; the inside temperature sensor who is provided with and peristaltic pump wireless connection of material pond, semiconductor cooler wireless connection have the temperature sensor who is fixed in semiconductor cooler surface. The invention has the beneficial effects that: 1. the semiconductor refrigerator and the peristaltic pump form two-stage thermostatic control. 2. The peristaltic pump is used for directly enabling the resin to circulate between the semiconductor refrigerator and the material pool, so that the resin in the whole material pool achieves the constant temperature effect. 3. The sensor is fixed with the water pipe and adopts flip structure, conveniently takes out the material pond.

Description

Constant temperature system of LCD 3D printer

Technical Field

The invention relates to the field of 3D printers, in particular to a constant temperature system of an LCD 3D printer.

Background

The 3D printer is a machine of rapid prototyping technology, which is a technology for constructing an object by printing layer by layer using an adhesive material such as powdered metal or plastic based on a digital model file. The method is often applied to the fields of mold manufacturing, industrial design and the like.

Resin materials can generate a large amount of heat to cause the change of large temperature difference in the large-scale LCD printing process, so that the size precision of a printed finished product is low, the shrinkage rate of the product is large, and the model is warped. The temperature of the material needs to be controlled in a cooling mode, and large-model precision printing is completed.

In the large-scale LCD photocuring printer on the market at present, a temperature control system utilizes a radiating fin to reduce the temperature around a material pool. This cooling method has the following disadvantages: 1. the temperature of the resin material can not be directly reduced 2. the thermal conductivity of the resin material is poor, and the central temperature of the material pool can not be reduced. 3. The temperature difference of the materials in the material pool is large.

Disclosure of Invention

In order to solve the problems that the temperature of a resin material cannot be reduced and the temperature difference in a material pool is large in the printing process of an LCD photo-curing printer, the invention provides a constant temperature system of an LCD 3D printer, which is realized by the following technical scheme.

A constant temperature system of an LCD 3D printer comprises a material pool, a peristaltic pump and a semiconductor refrigerator which are connected with each other by a water pipe; the inside temperature sensor who is provided with and peristaltic pump wireless connection of material pond, semiconductor cooler wireless connection have the temperature sensor who is fixed in semiconductor cooler surface.

Furthermore, the device also comprises a rotating assembly, and the peristaltic pump and the semiconductor refrigerator are both fixed on the rotating assembly connecting material pool through water pipes.

Furthermore, the rotating assembly comprises a bracket fixed on the material pool, a rotating plate connected with a rotating shaft of the bracket, and a 90-degree pipe joint in threaded connection with the rotating plate.

Furthermore, the rotating shaft is an equal-height screw, and the rotating plate is rotatably connected with the support through the equal-height screw.

Furthermore, a through hole is formed in the rotating plate, and the temperature sensor in wireless connection with the peristaltic pump is fixed on the rotating plate through a copper pipe and penetrates through the through hole.

The invention has the beneficial effects that: the temperature sensor detects the temperature in the feed tank and the temperature of the semiconductor refrigerator at any time and controls the temperature change in the printing process; the peristaltic pump is used for directly enabling the resin to circulate between the semiconductor refrigerator and the material pool, so that the resin in the whole material pool achieves the constant temperature effect.

Drawings

FIG. 1 is a schematic diagram of the system architecture of the present invention.

Fig. 2 is a partially enlarged view of a portion a of fig. 1.

Fig. 3 is a partially enlarged view of a portion B of fig. 1.

Wherein:

1-a material pool;

2-a peristaltic pump;

3-a semiconductor refrigerator;

4-a water pipe;

5-a rotating assembly; 51-a scaffold; 52-rotating the plate; a 53-90 degree pipe joint;

6-temperature sensor;

7-copper tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in figure 1, the constant temperature system of the LCD 3D printer comprises a material pool 1, a peristaltic pump 2 and a semiconductor refrigerator 3 which are connected with each other by a water pipe 4, wherein resin materials in the material pool 1 sequentially flow through the semiconductor refrigerator 3 and the peristaltic pump 2 through the water pipe 4, and then flow back to the material pool 1 from the peristaltic pump 2 to form a circulation. The interior of the material tank 1 and the semiconductor refrigerator 3 are provided with temperature sensors 6. Wherein, the temperature sensor 6 in the material pool 1 is in wireless communication connection with the peristaltic pump 2, and the temperature sensor 6 on the semiconductor refrigerator 3 is in wireless communication connection with the semiconductor refrigerator 3.

When the device works specifically, the temperature sensor 6 in the material pool 1 detects the temperature of the resin material in the material pool 1 in real time, and when the temperature of the resin material in the material pool 1 is higher than 25 ℃, the peristaltic pump 2 works to circulate the high-temperature resin material in the material pool 1 and the low-temperature resin material in the semiconductor refrigerator 3; the temperature sensor 6 on the semiconductor refrigerator 3 detects the surface structure temperature of the semiconductor refrigerator 3 in real time, the semiconductor refrigerator 3 starts to operate when the surface temperature of the semiconductor refrigerator 3 is higher than 10 degrees, and the semiconductor refrigerator 3 stops operating when the surface temperature of the semiconductor refrigerator 3 is lower than 5 degrees.

The constant temperature system of the LCD 3D printer further comprises a rotating assembly 5, and the peristaltic pump 2 and a water pipe 4 of the semiconductor refrigerator 3 are connected with the material pool 1 through the rotating assembly 5. The structure of the rotating assembly 5 is shown in fig. 2 and 3, and comprises a bracket 51 fixed on the material pool, a rotating plate 52 connected with the rotating shaft of the bracket 51, and a 90-degree pipe joint 53 connected with the rotating plate 52 in a threaded manner. The 90-degree pipe joint 53 is used to connect the water pipe 4 and fix and change the direction of the water pipe 4.

In the embodiment, as shown in fig. 2, the rotation axis between the bracket 51 and the rotation plate 52 is a contour screw. A through hole is formed in the rotating plate 52, a copper pipe 7 is arranged on the through hole, and a temperature sensor 6 which is wirelessly connected with the peristaltic pump 2 is fixed on the rotating plate 52 through the copper pipe 7 and penetrates through the through hole to extend into the material pool.

The rotating assembly 5 is used for directly taking the support 51 off through the rotating plate 52 when the material tank 1 needs to be taken out after printing is finished, so that the material tank 1 can be taken out conveniently and quickly.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A constant temperature system of an LCD 3D printer is characterized by comprising a material pool, a peristaltic pump and a semiconductor refrigerator which are connected with each other by water pipes; the inside temperature sensor who is provided with and peristaltic pump wireless connection of material pond, semiconductor cooler wireless connection have the temperature sensor who is fixed in semiconductor cooler surface.

2. The LCD 3D printer constant temperature system of claim 1, further comprising a rotating assembly, wherein the peristaltic pump and the semiconductor refrigerator are both fixed to the rotating assembly connecting material pool through water pipes.

3. The LCD 3D printer constant temperature system of claim 2, wherein the rotating assembly comprises a bracket fixed on the material tank, a rotating plate connected with a rotating shaft of the bracket, and a 90-degree pipe joint in threaded connection with the rotating plate.

4. The constant temperature system for the LCD 3D printer according to claim 3, wherein the rotation shaft is an equal-height screw, and the rotation plate is rotatably connected with the support through the equal-height screw.

5. The constant temperature system of the LCD 3D printer according to claim 4, wherein the rotating plate is further provided with a through hole, and the temperature sensor wirelessly connected with the peristaltic pump is fixed on the rotating plate through a copper pipe and penetrates through the through hole.