Resin heating and heat preservation device and 3D sand mold printer

Abstract

The utility model relates to the field of 3D (three-dimensional) sand mold printing, in particular to a resin heating and heat preservation device and a 3D sand mold printer, which comprise a cylinder body used for accommodating resin and provided with a feed port and a discharge port; the heating mechanism is arranged in the cylinder body; the temperature sensor is arranged in the cylinder body; the temperature controller is arranged on the cylinder body, and the heating mechanism and the temperature sensor are electrically connected with the temperature controller. The temperature control device can accurately control the temperature of resin, ensures that the resin is in a normal state, is directly supplied to the 3D sand mold printer for use, meets the continuous use requirement of the 3D sand mold printer, and also can reduce the loss.

Description

Technical Field

[0001] This utility model relates to the field of 3D sand mold printing, specifically to a resin heating and heat preservation device and a 3D sand mold printer. Background Technology

[0002] With the development of 3D printing technology, especially the application of sand mold 3D printing, this technology has become an important means of rapid prototyping, widely used in industries such as aerospace and automotive. Sand mold 3D printing technology not only expands product creativity and design space but also integrates mold design and manufacturing, significantly reducing product development costs, shortening product development cycles, increasing the success rate of new product launches, and enhancing process implementation capabilities. In this process, the temperature control of the raw material resin is particularly important. Especially in autumn and winter, as the air temperature drops, the resin temperature also decreases, affecting the normal operation of the printing equipment. To ensure the normal operation of the equipment, effective control of the resin temperature is essential.

[0003] In the prior art, several different methods exist for maintaining the required temperature for the resin. One method involves preheating the resin in an insulation device before adding it to the equipment, but this method cannot meet the needs of continuous equipment operation. Another method is to use an external air conditioner to heat the entire space. While this achieves the desired heating effect, it is energy-intensive, consuming a significant amount of energy even in areas where heating is not required, resulting in unnecessary waste. Additionally, there is the method of using electric heaters. Although electric heaters can provide the necessary heat, their wide heat radiation range makes precise temperature control difficult, leading to less than ideal heating results. Utility Model Content

[0004] The purpose of this invention is to provide a resin heating and insulation device that can accurately control the temperature of the resin, ensure the resin is in a normal state, and directly supply it to a 3D sand mold printer. It also meets the needs of continuous use of the 3D sand mold printer and reduces losses.

[0005] Another objective of this invention is to provide a 3D sand mold printer that can precisely control the temperature of the resin, ensure the resin is in a normal state, and directly supply it to the 3D sand mold printer. It also meets the needs of continuous use of the 3D sand mold printer and reduces wear and tear.

[0006] The technical solution of this utility model is implemented as follows:

[0007] A resin heating and heat preservation device, comprising:

[0008] A cylinder body for containing resin, the cylinder body being provided with an inlet and an outlet;

[0009] A heating mechanism is disposed within the cylinder body;

[0010] A temperature sensor is installed inside the cylinder.

[0011] A thermostat is mounted on the cylinder body, and the heating mechanism and the temperature sensor are electrically connected to the thermostat.

[0012] Furthermore, a heat insulation structure is provided on the outer side of the cylinder body.

[0013] Furthermore, a sealing cover plate is provided on the top of the cylinder, and the feed port is opened on the sealing cover plate.

[0014] Furthermore, a stirring mechanism is provided inside the cylinder, which is used to stir the resin inside the cylinder.

[0015] Furthermore, the stirring mechanism includes a stirring shaft, rotating blades, a connecting part, and a driving part. The stirring shaft is provided with a plurality of rotating blades. The stirring shaft is rotatably connected to the sealing cover plate through the connecting part. The top end of the stirring shaft is located above the sealing cover plate. The output end of the driving part is connected to the top end of the stirring shaft for transmission.

[0016] Furthermore, the drive unit adopts a drive motor, which is directly connected to the stirring shaft or connected through a coupling, and the transition part adopts a bearing.

[0017] Furthermore, the insulation structure includes an insulation cotton layer and a tin foil layer arranged sequentially from the inside to the outside.

[0018] Furthermore, the heating mechanism employs a heating tube, which is mounted on the inner wall of the cylinder via a heating tube bracket.

[0019] Furthermore, both the temperature sensor and the discharge port are located at the bottom of the cylinder body, and the discharge port is positioned opposite to the temperature sensor.

[0020] A 3D sand mold printer includes a printer body and the aforementioned resin heating and insulation device, which provides resin to the printer body at a set temperature.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This application stores resin in a cylinder and uses a temperature control mechanism to heat the resin in the cylinder to a suitable temperature. A temperature sensor measures the temperature, and when the temperature sensor detects that the resin temperature has reached the set temperature, it sends a signal to the temperature control mechanism, which then stops the heating. The resin can then be discharged from the outlet and supplied to the 3D sand mold printer. This resin heating and insulation device can precisely control the resin temperature, ensuring that the resin is in a normal state and can be directly supplied to the 3D sand mold printer. It also meets the need for continuous use of the 3D sand mold printer and reduces losses compared to the existing technology that uses external air conditioning for heating. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the resin heating and heat preservation device of this utility model;

[0025] Figure 2 This is a schematic diagram of the heating mechanism of this utility model;

[0026] Figure 3 This utility model Figure 1 Schematic diagram of the structure at point AA.

[0027] In the picture:

[0028] 1-Thermostat; 2-Motor; 3-Feed inlet; 4-Sealing cover; 5-Stirring shaft; 6-Insulation structure; 7-Cylinder body; 8-Temperature sensor; 9-Discharge outlet; 10-Heating tube; 11-Heating tube support; 12-Liquid level sensor; 13-Tin foil layer; 14-Insulation cotton layer; 15-Rotating blade. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] Example 1

[0037] Reference Figures 1-3 This embodiment provides a resin heating and heat preservation device, comprising:

[0038] Cylinder 7 is used to contain resin, and cylinder 7 is provided with inlet 3 and outlet 9;

[0039] A heating mechanism is disposed within the cylinder 7;

[0040] Temperature sensor 8 is disposed inside the cylinder 7;

[0041] A stirring mechanism is installed inside the cylinder 7, and the stirring mechanism is used to stir the resin inside the cylinder 7.

[0042] The thermostat 1 is mounted on the cylinder 7, and the heating mechanism and the temperature sensor 8 are electrically connected to the thermostat 1 respectively.

[0043] A temperature sensor is a device used to detect and measure the temperature of an object or environment. They sense changes in temperature through changes in physical or chemical properties and convert these changes into electrical signals or other measurable forms.

[0044] Thermostat 1 plays a crucial role in the resin heating and insulation device. It automatically controls and regulates the temperature of the heating system, ensuring the resin remains within the required temperature range. Specifically, the functions of thermostat 1 include:

[0045] 1. Set target temperature: Users can set a target temperature according to their actual needs, and the thermostat 1 will control the heating process according to this setting value.

[0046] 2. Real-time temperature monitoring: The thermostat 1 monitors the resin temperature inside the cylinder 7 in real time through the temperature sensor 8 (such as temperature sensor 8).

[0047] 3. Automatic heating adjustment: When the resin temperature is detected to be lower than the set target temperature, the temperature controller 1 will activate the heating mechanism (such as heating tube 10) to heat the resin. Conversely, if the temperature is higher than the target temperature, heating will stop to avoid overheating.

[0048] 4. Negative Feedback Control: Thermostat 1 automatically adjusts the heating power based on the difference between the current temperature and the target temperature through a feedback mechanism, achieving precise temperature control. This negative feedback mechanism helps stabilize the temperature and avoid excessive temperature fluctuations.

[0049] Through these functions, the temperature controller 1 can ensure that the resin is always at the optimal operating temperature during the printing process, thereby improving print quality and equipment stability.

[0050] The cylinder body 7 is provided with a heat insulation structure 6 on its outer side.

[0051] The insulation structure 6 includes an insulation cotton layer 14 and a tin foil layer 13 arranged sequentially from the inside to the outside, that is, the insulation cotton layer 14 and the tin foil layer 13 are arranged sequentially on the outside of the cylinder body 7.

[0052] The main functions of the insulation layer 14 installed on the outside of the cylinder 7 are as follows:

[0053] 1. Reduce heat loss: The insulation cotton can significantly reduce the heat transfer from the inside of the cylinder 7 to the outside, effectively reducing heat loss and improving energy utilization efficiency.

[0054] 2. Reduce noise and vibration: Since the stirring mechanism is installed inside the cylinder 7, the insulation cotton layer 14 also has a certain sound insulation effect, thereby reducing the noise and vibration generated during stirring inside the cylinder 7.

[0055] The function of setting the tin foil layer 13 on the outside of the thermal insulation cotton layer 14 outside the cylinder body 7 is as follows:

[0056] 1. Heat insulation: A tin foil layer 13 is set on the outside of the insulation cotton layer 14 to further prevent heat loss and improve the heat insulation effect.

[0057] 2. Increased durability: The metallic properties of tin foil give it good physical strength and wear resistance. Adding a tin foil layer 13 to the outside of the insulation cotton layer 14 can increase the overall durability of the insulation cotton and prevent external factors (such as weathering, ultraviolet rays, physical wear, etc.) from damaging the insulation cotton.

[0058] 3. Auxiliary fixation: The tin foil layer 13 wraps around the outside of the insulation cotton layer 14, providing a relatively tight wrapping layer, which helps to fix the position of the insulation cotton layer 14 and prevent it from shifting during vibration or movement.

[0059] In this embodiment, a sealing cover plate 4 is provided on the top of the cylinder body 7. The sealing cover plate 4 plays a sealing role for the cylinder body 7, and the feed port 3 is opened on the sealing cover plate 4.

[0060] The stirring mechanism includes a stirring shaft 5, rotating blades 15, a connecting part, and a driving part. Multiple rotating blades 15 are provided on the stirring shaft 5. The stirring shaft 5 is rotatably connected to the sealing cover plate 4 through the connecting part. The top end of the stirring shaft 5 is located on the sealing cover plate 4. The output end of the driving part is connected to the top end of the stirring shaft 5 for transmission.

[0061] Preferably, the drive unit can be a motor 2, with the output shaft of the motor 2 connected to the top end of the stirring shaft 5 via a coupling, or the output shaft of the motor 2 and the top end of the stirring shaft 5 connected via a transmission assembly. The transmission assembly can be a belt drive assembly, a sprocket drive assembly, or a gear drive assembly to achieve belt drive, chain drive, or gear drive respectively. When the heating mechanism heats the resin in the cylinder 7, the motor 2 simultaneously drives the stirring shaft 5 and the rotating blades 15 to rotate, thereby stirring the resin in the cylinder 7 and ensuring uniform heating of the resin.

[0062] The heating mechanism uses a heating tube 10, which is S-shaped to improve the heating effect on the resin. The heating tube 10 can be fixedly installed on the inner wall of the cylinder 7 via multiple heating tube supports 11 (e.g., Figure 1 and Figure 2 ).

[0063] Preferably, the temperature sensor 8 and the discharge port 9 are both located at the bottom of the cylinder 7, and the discharge port 9 is positioned opposite to the temperature sensor 8. The heating tube 10 is positioned above the discharge port 9, and the distance between the temperature sensor 8 and the heating tube 10 is maximized to reduce the influence of the heating tube 10 on the temperature measurement of the temperature sensor 8 when heating, and to ensure that the measured value is as close as possible to the average value of the entire liquid material.

[0064] A liquid level sensor 12 is also installed inside the cylinder 7, and preferably, the liquid level sensor 12 is located at the bottom of the sealing cover plate 4. The liquid level sensor 12 is used to detect the liquid level of the resin. The main functions of the liquid level sensor 12 include:

[0065] 1. Real-time liquid level monitoring:

[0066] The level sensor 12 continuously monitors the resin level inside the cylinder 7, ensuring that operators or the control system can monitor changes in the level in real time. This is crucial for preventing problems caused by overflow or excessively low levels.

[0067] 2. Automatic control and alarm:

[0068] In an automated system, the level sensor 12 can work in conjunction with the control system to achieve automatic adjustment of the liquid level. When the liquid level reaches a preset high or low limit, the system can automatically start or stop to control the feeding within the cylinder 7, thereby maintaining the liquid level within a suitable range. Furthermore, the level sensor 12 can also trigger an alarm signal to remind the operator to take appropriate measures.

[0069] 3. Improve production efficiency:

[0070] The application of liquid level sensor 12 can reduce the need for manual intervention and improve the automation of the production process. When the resin liquid level is low, it can automatically feed from the feed port 3, thereby improving production efficiency and product quality.

[0071] Solenoid valves can be installed at the inlet 3 and outlet 9 respectively, and electrically connected to the control system. The stirring mechanism is also electrically connected to the control system. Resin at a suitable temperature can be directly supplied to the 3D sand mold printer from the outlet 9. When resin needs to be supplied to the 3D sand mold printer, the control system controls the solenoid valve at the outlet 9 to open, allowing resin to be discharged from the outlet 9. When feeding is required, the control system controls the solenoid valve at the feeding port to open, allowing the resin feeding device to deliver liquid resin into the cylinder 7, achieving automated feeding and continuous resin operation within the device.

[0072] Example 2

[0073] A 3D sand mold printer includes a printer body and the aforementioned resin heating and insulation device, which provides resin to the printer body at a set temperature.

[0074] This application stores resin in cylinder 7. The heating mechanism is controlled by temperature control to heat the resin in cylinder 7 to a suitable temperature. Temperature sensor 8 measures the temperature. When the temperature sensor 8 detects that the resin temperature has reached the set temperature, it sends a signal to the temperature control and drives the heating mechanism to stop heating. Then the resin can be discharged from the outlet 9 and supplied to the printer. This resin heating and heat preservation device can accurately control the resin temperature, ensure that the resin is in a normal state, and directly supply it to the printer, meeting the needs of continuous printer use. Compared with the existing technology that uses external air conditioning for heating, it can also reduce losses.

[0075] The beneficial effects of the technical solution of this utility model are:

[0076] 1. Accurate temperature control is achieved through temperature controller 1 and temperature sensor 8, realizing negative feedback control.

[0077] 2. Maximize the distance between temperature sensor 8 and heating tube 10 to reduce the impact of heating tube 10 on temperature sensor 8 during heating, and ensure that the measured value is as close as possible to the average value of the entire liquid.

[0078] 3. The heating tube 10 is fixed by multiple heating tube supports 11 to ensure the stability of the heating tube 10 position when the stirring mechanism is stirring.

[0079] 4. The insulation structure 6 combines the insulation surface layer and the tin foil layer 13 to effectively insulate the liquid material and increase the insulation efficiency.

[0080] 5. A liquid level sensor 12 is installed to prevent heating when there is no liquid material, avoid dry burning, and monitor the liquid level to facilitate automated loading and unloading.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

[0082] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A resin heating and holding device characterized by comprising: It comprises: a cylinder (7) for containing resin, the cylinder (7) is provided with a feeding port (3) and a discharging port (9); a heating mechanism arranged in the cylinder (7); a temperature sensor (8) arranged in the cylinder (7); a temperature controller (1) arranged on the cylinder (7), the heating mechanism and the temperature sensor (8) are respectively electrically connected with the temperature controller (1).

2. The resin heating and holding apparatus according to claim 1, wherein The outer side of the cylinder (7) is provided with a heat preservation structure (6).

3. The resin heating and holding apparatus according to claim 1, wherein The top of the cylinder (7) is provided with a sealing cover plate (4), and the feeding port (3) is arranged on the sealing cover plate (4).

4. The resin heating and holding apparatus according to claim 3, wherein A stirring mechanism is arranged in the cylinder (7), and the stirring mechanism is used for stirring the resin in the cylinder (7).

5. The resin heating and holding apparatus according to claim 4, wherein The stirring mechanism comprises a stirring shaft (5), rotating blades (15), an adapter and a driving part, a plurality of rotating blades (15) are arranged on the stirring shaft (5), the stirring shaft (5) is rotatably connected with the sealing cover plate (4) through the adapter, the top end of the stirring shaft (5) is located above the sealing cover plate (4), and the output end of the driving part is connected with the top end of the stirring shaft (5) for transmission.

6. The resin heating and holding apparatus according to claim 5, wherein The driving part adopts a driving motor (2), the driving motor (2) is directly connected with the stirring shaft (5) or is connected with the stirring shaft (5) through a shaft coupling, and the adapter adopts a bearing.

7. The resin heating and holding apparatus according to claim 2, wherein The heat preservation structure (6) comprises a heat preservation cotton layer (14) and a tin paper layer (13) arranged in sequence from inside to outside.

8. The resin heating and holding apparatus according to claim 1, wherein The heating mechanism adopts a heating pipe (10), and the heating pipe (10) is installed on the inner wall of the cylinder (7) through a heating pipe support (11).

9. The resin heating and holding apparatus according to claim 1, wherein The temperature sensor (8) and the discharging port (9) are arranged on the bottom of the cylinder (7), and the discharging port (9) is arranged opposite to the temperature sensor (8).

10. A 3D sand mold printer comprising a printer body, characterized in that, Also comprising the resin heating and heat preservation device of any one of claims 1-9, the resin heating and heat preservation device is used for providing the printer body with resin at a set temperature.

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