3D printing temperature control system and 3D printer

Abstract

The utility model relates to the technical field of resin temperature control, and discloses a 3D printing temperature control system and a 3D printer, the temperature control system comprises a resin tank, a plurality of heating devices, a heat preservation bin, a temperature sensor and a controller, the resin tank, the plurality of heating devices and a temperature control module are all located in the heat preservation bin, and the resin tank is used for storing resin; the plurality of heating devices are uniformly distributed right above the resin tank and are used for heating the resin; the temperature sensor is connected with the input end of the controller and used for collecting the current temperature of the resin and transmitting the current temperature to the controller; the output end of the controller is connected with the multiple heating devices, and the controller is used for controlling the multiple heating devices according to the relation between the current temperature of the resin and the preset temperature range so that the temperature of the resin can be kept within the preset temperature range. According to the 3D printing temperature control system, the multiple heating devices evenly distributed over the resin tank are used for heating resin, the heating speed is high, and the resin is heated more evenly.

Description

Technical Field

[0001] The utility model relates to the technical field of resin temperature control, and in particular to a 3D printing temperature control system and a 3D printer. Background Art

[0002] The raw material for 3D printing is liquid photosensitive resin, which requires a certain temperature to undergo a curing reaction. Therefore, a resin tank is installed inside the 3D printer to store the resin. The resin tank is heated to a certain temperature. The existing technology often uses a resistance wire heater installed on the outer walls of both sides of the resin tank. The heat from the heater is transferred to the resin through the intermediate resin tank wall to heat the resin. However, this method of heating is relatively slow, and the resin has poor fluidity, resulting in a large temperature difference between the resin at the center and the edge of the resin tank. In addition, if the target temperature of the resin is high, the resin temperature cannot reach the target temperature due to heat dissipation and other reasons. Utility Model Content

[0003] In view of this, the present invention provides a 3D printing temperature control system and a 3D printer to solve the problems of uneven resin temperature and slow heating speed obtained by existing heating methods.

[0004] In the first aspect, the present invention provides a 3D printing temperature control system, which includes: a resin tank, multiple heating devices, a heat preservation chamber, a temperature sensor, and a controller, wherein the resin tank, multiple heating devices, and the temperature control module are all located in the heat preservation chamber.

[0005] Resin tank, used to store resin;

[0006] Multiple heating devices, each connected in series and evenly distributed directly above the resin tank, for heating the resin;

[0007] A temperature sensor is connected to the input terminal of the controller and is used to collect the current temperature of the resin and transmit it to the controller;

[0008] The controller has an output end connected to multiple heating devices and is used to control the multiple heating devices according to the relationship between the current temperature of the resin and the preset temperature range, so as to keep the temperature of the resin within the preset temperature range.

[0009] The 3D printing temperature control system provided by the present invention utilizes multiple heating devices evenly distributed directly above the resin tank to heat the resin. The heating speed is fast and the resin is heated more evenly. The resin tank, multiple heating devices and temperature control module are all placed in the heat preservation chamber to reduce heat dissipation, which is conducive to making the resin temperature reach a higher temperature.

[0010] In an optional embodiment, the heating device includes an infrared heating bulb.

[0011] The 3D printing temperature control system provided by the utility model uses an infrared heating bulb as a resin heating device and utilizes a thermal radiation heating method, which has high heating efficiency, and the resin heats up quickly and evenly.

[0012] In an optional embodiment, the temperature control system further includes: a relay, whose input end is connected to the controller and whose output end is connected to multiple heating devices, for controlling the start and stop of the multiple heating devices according to the output signal of the controller.

[0013] The 3D printing temperature control system provided by the utility model uses relays to control the start and stop of multiple heating devices. The control method is simple and fast, which is conducive to more accurate regulation of resin temperature.

[0014] In an alternative embodiment, the temperature sensor is located within the resin and can be illuminated by an infrared heating bulb.

[0015] The 3D printing temperature control system provided by the present invention places a temperature sensor in the resin and can be illuminated by an infrared heating bulb, so that the resin temperature can be detected more accurately and the resin temperature can be adjusted more accurately.

[0016] In an optional embodiment, the housing of the temperature sensor is waterproof.

[0017] The 3D printing temperature control system provided by the utility model designs a waterproof housing for the temperature sensor to ensure that the temperature sensor is immersed in resin, thereby improving the accuracy of temperature detection and increasing the service life of the temperature sensor.

[0018] In an optional embodiment, the controller is a single chip microcomputer, which is located in the electrical panel.

[0019] The 3D printing temperature control system provided by the utility model adopts a commonly used single-chip microcomputer as a controller, and the logic control instructions are simple and convenient. The single-chip microcomputer is placed in the electrical panel, thereby improving the service life and flexibility of the single-chip microcomputer.

[0020] In an optional embodiment, the controller is connected to the temperature sensor and the plurality of heating devices via solid lines.

[0021] In the 3D printing temperature control system provided by the utility model, the controller is connected with the temperature sensor and multiple heating devices through solid lines, which reduces the failure rate of data transmission and ensures the normal transmission of temperature data and control instructions.

[0022] In a second aspect, the present invention provides a 3D printer comprising the 3D printing temperature control system of any one of the first aspects.

[0023] The 3D printer provided by the present invention adopts the 3D printing temperature control system of any one of the first aspects, thereby ensuring that resin with uniform temperature can be quickly produced during use of the 3D printer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 3D printing temperature control system according to an embodiment of the present invention;

[0026] Figure 2 1 is a schematic structural diagram of another 3D printing temperature control system according to an embodiment of the present invention;

[0027] Figure 3 It is a schematic diagram of a process of a 3D printer according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0029] The embodiment of the present utility model provides a 3D printing temperature control system, which heats the resin through multiple heating devices evenly distributed directly above the resin tank, so as to achieve the effect of quickly heating the resin and heating the resin more evenly.

[0030] According to an embodiment of the present invention, a 3D printing temperature control system embodiment is provided. In this embodiment, as Figure 1 As shown, the temperature control system includes: a resin tank 1, multiple heating devices 2, a heat preservation chamber 3, a temperature sensor 4, and a controller 5. The resin tank 1, multiple heating devices 2, and the temperature control module are all located in the heat preservation chamber 3.

[0031] The resin tank 1 is used to store resin. Specifically, the resin tank 1 stores liquid resin. When the 3D printer is working, the liquid resin needs to be heated to a certain temperature and maintained constant. The maximum temperature of the liquid resin is generally 80°C, which is only used as an example, but not limited to this.

[0032] A plurality of heating devices 2 are connected in series and are evenly distributed directly above the resin tank 1 for heating the resin.

[0033] Specifically, the number of heating devices 2 is determined by the size of the groove surface of the heating groove. The larger the groove surface, the more heating devices 2 there are, and the smaller the groove surface, the fewer heating devices 2 there are. In order to improve the efficiency of the heating device 2 in heating the resin, the heating device 2 is evenly distributed above the resin tank 1. It can be installed on the upper wall of the insulation bin 3 by metal screws. This is only an example, but not limited to this.

[0034] The temperature sensor 4 is connected to the input end of the controller 5 and is used to collect the current temperature of the resin and transmit it to the controller 5 .

[0035] Specifically, the temperature sensor 4 is a PT100, which is used as an example only and is not intended to be limiting. The temperature sensor 4 only needs to be able to collect the current temperature of the resin and transmit it to the controller 5. To ensure the safe use and accuracy of the temperature sensor 4, the location of the temperature sensor 4 must not interfere with the stencil or scraper of the 3D printer.

[0036] The controller 5 has an output end connected to the plurality of heating devices 2 and is used to control the plurality of heating devices 2 according to the relationship between the current temperature of the resin and the preset temperature range, so as to keep the temperature of the resin within the preset temperature range.

[0037] Specifically, after receiving the current resin temperature, the controller 5 controls multiple heating devices 2 based on the relationship between the current resin temperature and a preset temperature range. For example, if the preset temperature range is 75°C-76°C, when the current resin temperature is less than 75°C, the controller 5 controls multiple heating devices 2 to turn on and increase their heating power. When the current resin temperature is greater than 76°C, the controller 5 controls multiple heating devices 2 to reduce their heating power or turn them off. This maintains the resin temperature within the preset temperature range. It should be noted that the preset temperature range can be a range or a temperature threshold, for example only, and is not intended to be limiting.

[0038] The 3D printing temperature control system provided in this embodiment utilizes multiple heating devices 2 evenly distributed directly above the resin tank 1 to heat the resin. The heating speed is fast and the resin is heated more evenly. The resin tank 1, multiple heating devices 2 and temperature control module are all placed in the insulation chamber 3 to reduce heat dissipation, which is conducive to making the resin temperature reach a higher temperature.

[0039] In some optional embodiments, such as Figure 2 As shown, the heating device 2 comprises an infrared heating bulb.

[0040] The 3D printing temperature control system provided by the present invention uses an infrared heating bulb as the resin heating device 2, and utilizes a thermal radiation heating method, which has high heating efficiency, and the resin heats up quickly and evenly.

[0041] In some optional embodiments, such as Figure 2 As shown, the temperature control system further includes: a relay, whose input end is connected to the controller 5 and whose output end is connected to multiple heating devices 2, for controlling the start and stop of the multiple heating devices 2 according to the output signal of the controller 5.

[0042] Specifically, the relay is a solid-state relay, by way of example only, but not limitation. The output signal of controller 5 is a voltage signal, which controls a solid-state relay. The output of the solid-state relay is connected to the infrared heating bulb via a solid line. Based on the relationship between the current resin temperature and a preset temperature range, controller 5 controls the ratio of the infrared heating bulb's on-time and off-time, i.e., its duty cycle, via the solid-state relay. This in turn adjusts the infrared heating bulb's heating power, thereby implementing closed-loop control of the resin temperature.

[0043] The 3D printing temperature control system provided by the present invention uses relays to control the start and stop of multiple heating devices 2. The control method is simple and fast, which is conducive to more accurate regulation of the resin temperature.

[0044] In some optional embodiments, such as Figure 2 As shown, the temperature sensor 4 is located in the resin and can be illuminated by the infrared heating bulb. The housing of the temperature sensor 4 is waterproof.

[0045] The 3D printing temperature control system provided by this utility model places a temperature sensor 4 within the resin, where it can be illuminated by an infrared heating bulb. This allows for more accurate resin temperature detection and, consequently, more precise temperature regulation. A waterproof housing is designed for the temperature sensor 4, ensuring that it is immersed in the resin. This improves temperature detection accuracy and extends the service life of the temperature sensor 4.

[0046] In some optional embodiments, such as Figure 2 As shown, the controller 5 is a single chip microcomputer, which is located in the electrical panel.

[0047] In the 3D printing temperature control system provided by the present invention, the controller 5 adopts a commonly used single-chip microcomputer, the logic control instructions are simple and convenient, and the single-chip microcomputer is placed in the electrical panel, thereby improving the service life and flexibility of the single-chip microcomputer.

[0048] In some optional embodiments, such as Figure 2 As shown, the controller 5 is connected to the temperature sensor 4 and the plurality of heating devices 2 via solid lines.

[0049] In the 3D printing temperature control system provided by the present invention, the controller 5 is connected to the temperature sensor 4 and the plurality of heating devices 2 through solid lines, which reduces the failure rate of data transmission and ensures the normal transmission of temperature data and control instructions.

[0050] According to an embodiment of the present invention, a 3D printer is provided. Figure 3 As shown, the 3D printer in this embodiment includes the 3D printing temperature control system of any one of the above embodiments.

[0051] The 3D printer provided by the present invention adopts the 3D printing temperature control system of any one of the previous embodiments, thereby ensuring that resin with uniform temperature can be quickly produced during use of the 3D printer.

[0052] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A 3D printing temperature control system, characterized in that: The temperature control system comprises: a resin tank, a plurality of heating devices, a heat preservation chamber, a temperature sensor, and a controller, wherein the resin tank, the plurality of heating devices, and the temperature control module are all located in the heat preservation chamber. Resin tank, used to store resin; A plurality of heating devices, each of which is connected in series and evenly distributed directly above the resin tank, for heating the resin; A temperature sensor connected to an input terminal of the controller and used to collect the current temperature of the resin and transmit it to the controller; The controller has an output end connected to the plurality of heating devices and is used to control the plurality of heating devices according to the relationship between the current temperature of the resin and the preset temperature range so as to keep the temperature of the resin within the preset temperature range.

2. The temperature control system according to claim 1, characterized in that: The heating device comprises an infrared heating bulb.

3. The temperature control system according to claim 1, characterized in that: The temperature control system further comprises: a relay, an input end of which is connected to the controller, and an output end of which is connected to the plurality of heating devices, and is used for controlling the start and stop of the plurality of heating devices according to an output signal of the controller.

4. The temperature control system according to claim 2, characterized in that: The temperature sensor is located within the resin and can be illuminated by the infrared heating bulb.

5. The temperature control system according to claim 2, characterized in that: The housing of the temperature sensor is designed to be waterproof.

6. The temperature control system according to claim 1, characterized in that: The controller is a single chip microcomputer, which is located in the electrical panel.

7. The temperature control system according to claim 1, characterized in that: The controller is connected to the temperature sensor and the plurality of heating devices via solid line connections.

8. A 3D printer, characterized in that: A 3D printing temperature control system comprising any one of claims 1-7.

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