CN112571787A

CN112571787A - Photocuring 3D printer

Info

Publication number: CN112571787A
Application number: CN202011339963.6A
Authority: CN
Inventors: 刘辉林; 唐京科; 陈春; 敖丹军; 陈勋; 陈晓婵
Original assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Current assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-03-30

Abstract

The invention discloses a photocuring 3D printer and relates to the technical field of 3D printing. The photocuring 3D printer comprises a material pumping device, a discharging device and a heating container, wherein material liquid is conveyed from the material pumping device to the discharging device through a material liquid conveying pipeline, the heating container is arranged between the material pumping device and the discharging device, and comprises an inlet and an outlet; the feed liquid conveying pipeline enters from the inlet of the heating container and extends out of the outlet to be connected with the discharging device, and the joint of the feed liquid conveying pipeline and the inlet and the outlet is hermetically arranged; the heating container is filled with liquid, and the liquid in the heating container is heated, so that the feed liquid passing through the heating container reaches a set temperature. According to the photocuring 3D printer provided by the invention, the feed liquid entering the discharging device is heated by the liquid in the heating container, so that the feed liquid is uniformly heated, the temperature of the liquid in the heating container is constant, the temperature of the feed liquid can be ensured to be constant, and the 3D printing effect is improved.

Description

Photocuring 3D printer

Technical Field

The invention relates to the technical field of 3D printers, in particular to a photocuring 3D printer.

Background

The three-dimensional light curing forming process is a 3D printing technology widely applied in modern science and technology, generally, a printing material used for 3D printing is a resin material, the temperature of a printing environment has an influence on the feed liquid of the resin material, and if the environment temperature is too low, the feed liquid of the resin material can be solidified, so that the printing effect is poor.

The photosensitive resin material used at present is generally printed under a normal-temperature environment, the effect is not best shown, the influence of weather is large, and the risk of printing failure is easily caused by low temperature in autumn and winter. Photocuring 3D printing apparatus's among the prior art feed liquid heating mechanism through the heating that realizes the feed liquid to the silo heating, but if the feed liquid in the silo is too much, causes the feed liquid heating inequality easily.

Disclosure of Invention

The invention aims to provide a photocuring 3D printer which can uniformly heat feed liquid and keep the temperature of the feed liquid constant.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a photocuring 3D printer, is including taking out material device and discharging device, and the feed liquid passes through feed liquid conveying line and follows take out the material device carry extremely discharging device, it still includes:

the heating container is arranged between the material pumping device and the material discharging device and comprises an inlet and an outlet;

the feed liquid conveying pipeline enters from the inlet of the heating container and extends out of the outlet to be connected with the discharging device, and the joints of the feed liquid conveying pipeline and the inlet and the outlet are hermetically arranged;

the heating container is filled with liquid, and the liquid in the heating container is heated so that the liquid passing through the heating container reaches a set temperature.

Optionally, the feed liquid delivery line located within the heating vessel is provided as a coiled line.

Optionally, the coiled tubing is serpentine coiled tubing, circular coiled tubing or S-shaped coiled tubing.

Optionally, the bottom of the heating container is further provided with a first temperature sensor for detecting the temperature of the liquid.

Optionally, photocuring 3D printer still includes the peristaltic pump, the peristaltic pump set up in take out the material device with between the heating container, the peristaltic pump with feed liquid conveying pipeline connects, is used for adjusting the velocity of flow of feed liquid in the feed liquid conveying pipeline.

Optionally, the photocuring 3D printer still includes level sensor, level sensor set up in discharging device's play liquid end for detect the liquid level that gets into discharging device's feed liquid.

Optionally, the photocuring 3D printer still includes the cover body, base station, print platform and drive arrangement, the cover body will the base station the print platform drive arrangement take out the material device discharging device heating container and peristaltic pump cover locate in an enclosure.

Optionally, a heater is arranged in the closed space for heating the closed space.

Optionally, the heater is a PTC electric heater mounted on the bottom of the base platform.

Optionally, a second temperature sensor is further disposed in the enclosed space, the second temperature sensor is disposed on the driving device, and the second temperature sensor is configured to detect a temperature in the enclosed space.

The invention has the beneficial effects that:

according to the photocuring 3D printer provided by the invention, the heating container is arranged between the material pumping device and the discharging device, the material liquid conveying pipeline between the material pumping device and the discharging device penetrates through the heating container, and the material liquid entering the discharging device reaches the set temperature by heating the liquid in the heating container. According to the photocuring 3D printer provided by the invention, the feed liquid entering the discharging device is heated by the liquid in the heating container, so that the feed liquid is uniformly heated, the temperature of the liquid in the heating container is constant, the temperature of the feed liquid can be ensured to be constant, and the 3D printing effect is improved.

Drawings

Fig. 1 is a schematic view of a first viewing angle structure of a photocuring 3D printer provided by an embodiment of the present invention;

fig. 2 is a schematic view of a second viewing angle structure of the photocuring 3D printer provided by the embodiment of the invention;

fig. 3 is a schematic diagram of a third viewing angle structure of a photocuring 3D printer according to an embodiment of the present invention.

In the figure:

1. a material pumping device; 2. a discharging device; 3. a feed liquid conveying pipeline; 4. heating the container; 5. a first temperature sensor; 6. a peristaltic pump; 7. a liquid level sensor; 8. a base station; 9. a printing platform; 10. a drive device; 11. a trough; 12. a PTC electric heater; 13. a second temperature sensor;

101. a motor 102, a lead screw; 103. a feed screw nut; 104. a lead screw mounting seat; 105. a connecting plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, as meaning either a fixed connection or a removable connection; the installation can be direct or indirect through an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 and fig. 2, the present embodiment provides a photocuring 3D printer, which includes a material pumping device 1, a material discharging device 2, and a heating container 4, wherein a material liquid is conveyed from the material pumping device 1 to the material discharging device 2 through a material liquid conveying pipeline 3, the heating container 4 is disposed between the material pumping device 1 and the material discharging device 2, and the heating container 4 includes an inlet and an outlet; a feed liquid conveying pipeline 3 enters from an inlet of the heating container 4 and extends out from an outlet to be connected with the discharging device 2, and the joints of the feed liquid conveying pipeline 3 and the inlet and the outlet are hermetically arranged; the heating container 4 contains liquid, and the liquid in the heating container 4 is heated, so that the feed liquid passing through the heating container 4 reaches a set temperature.

The photocuring 3D printer that this embodiment provided is through setting up heating container 4 between taking out material device 1 and discharging device 2 to will take out feed liquid conveying pipeline 3 between material device 1 and the discharging device 2 and pass heating container 4, through the liquid heating to in the heating container 4, make the feed liquid that gets into discharging device 2 reach the settlement temperature. The photocuring 3D printer that this embodiment provided, all through the liquid heating in the heating container 4 to the feed liquid that gets into discharging device 2 for the feed liquid is heated evenly, and the constancy of temperature of feed liquid can be guaranteed to the constancy of temperature in the heating container 4, thereby has improved 3D and has printed the effect.

Alternatively, as shown in fig. 1, the heating container 4 is disposed adjacent to the discharging device 2. The arrangement is to reduce the length of the feed liquid conveying pipeline 3 between the heating container 4 and the discharging device 2 as much as possible, so as to avoid the loss of heat of the heated feed liquid, and ensure that the heating temperature of the feed liquid entering the discharging device 2 is basically consistent with that of the liquid in the heating container 4.

In this embodiment, the liquid in the heating container 4 is water, and the boiling point of water is 100 ℃. The feed liquid is prepared from photosensitive resin materials, and when the temperature of the feed liquid is between 60 and 70 ℃, the 3D printing effect is optimal. Through heating water, heat loss is removed, and the feed liquid passing through the feed liquid conveying pipeline 3 can reach 60-70 ℃. Of course, in other embodiments, other liquids capable of bringing the feed solution to 60 ℃ to 70 ℃ may be heated.

In order to ensure the sealing performance of the heating container 4, sealing rings (not shown in the figure) are arranged at the joints of the feed liquid conveying pipeline 3 and the inlet and the outlet of the heating container 4, so as to prevent water in the heating container 4 from flowing out through the joints of the feed liquid conveying pipeline 3 and the inlet and the outlet of the heating container 4. Meanwhile, the feed liquid conveying pipeline 3 in the heating container 4 is set to be a spiral pipeline, the feed liquid conveying pipeline 3 penetrating through the heating container is set to be a spiral pipeline, and under the condition that the volume of the heating container 4 and the flow rate of the feed liquid in the feed liquid conveying pipeline 3 are certain, the feed liquid conveying pipeline 3 in the heating container 4 is lengthened as much as possible, so that the heating time of the feed liquid in the heating container 4 is prolonged as much as possible, the feed liquid entering the heating container 4 can be heated to 60-70 ℃, and the phenomenon that the time of the feed liquid in the heating container 4 is too short to reach the set temperature is avoided.

The spiral pipeline may be a serpentine spiral pipeline, an annular spiral pipeline, or an S-shaped spiral pipeline, and in this embodiment, the feed liquid conveying pipeline 3 located in the heating container 4 is a serpentine spiral pipeline. Of course, in other embodiments, the feed liquid conveying pipeline 3 located in the heating container 4 may also be configured as an S-shaped spiral pipeline or an annular spiral pipeline, or other shapes, and may also achieve the effect of prolonging the heating time of the feed liquid in the heating container 4.

As shown in fig. 1 and 2, the bottom of the heating container 4 is also provided with a first temperature sensor 5 for detecting the temperature of the liquid. The first temperature sensor 5 is used for detecting the temperature of the liquid in the heating container 4, so that the temperature of the liquid in the heating container 4 is constant, and when the first temperature sensor 5 detects that the temperature of the liquid in the heating container 4 is higher than a certain temperature, the heating of the liquid in the heating container 4 is stopped; when the first temperature sensor 5 detects that the temperature of the liquid in the heating container 4 is lower than the temperature, the heating of the liquid in the heating container 4 is continued so that the temperature of the liquid in the heating container 4 is constant. Due to the certain heat loss, the constant temperature of the liquid in the heating container 4 is higher than the set temperature to be reached by the feed liquid. The specific value for the constant temperature can be obtained from experiments or calculation of heat loss.

In this embodiment, as shown in fig. 1, the photocuring 3D printer further includes a base station 8, a printing platform 9, a driving device 10 and a peristaltic pump 6, the peristaltic pump 6 and the heating container 4 are both arranged at the bottom of the base station 8, a trough 11 is arranged on the base station 8, the material pumping device 1 and the material discharging device 2 are arranged at two opposite sides of the trough 11, the heated material liquid is added into the trough 11 by the material discharging device 2, and the driving device 10 is connected with the printing platform 9 and used for driving the printing platform 9 to move downwards to the material liquid in the trough 11.

As shown in fig. 1 and fig. 2, a peristaltic pump 6 is disposed between the material pumping device 1 and the heating container 4, and the peristaltic pump 6 is connected to the material liquid conveying pipeline 3 for adjusting the flow rate of the material liquid in the material liquid conveying pipeline 3. The flow rate of the feed liquid is controlled by the peristaltic pump 6, so that on one hand, the feed liquid passing through the heating container 4 can be fully heated to reach a set temperature; and on the other hand to keep the level of the liquid in the tank 11 constant.

In this embodiment, as shown in fig. 1 and fig. 2, base station 8 and trough 11 are both rectangular, the length and width of trough 11 are both less than the length and width of base station 8, trough 11 is placed in the middle position of base station 8, material pumping device 1 and discharging device 2 are disposed at two opposite corners of base station 8, peristaltic pump 6 is disposed at the outlet of material pumping device 1, feed liquid conveying pipeline 3 passes through base station 8 and is connected with peristaltic pump 6 at the bottom of base station 8, and peristaltic pump 6 controls the flow rate of feed liquid coming out from material pumping device 1. Simultaneously, heating container 4 sets up in discharging device 2's entrance, and the feed liquid conveying line 3 that passes heating container 4 of 8 bottoms of base station is connected with discharging device 2's entry, and discharging device 2 is the blown down tank, and the top of blown down tank is the discharge end to the part that extends the top of silo 11 outwards, and the discharge gate sets up in the below of discharge end, and just sets up silo 11 to carry the feed liquid after will heating to discharging device 2.

As shown in fig. 1, the photocuring 3D printer further includes a liquid level sensor 7, and the liquid level sensor 7 is disposed at the liquid outlet end of the discharging device 2 and is used for detecting the liquid level of the liquid entering the discharging device 2. In this embodiment, level sensor 7 sets up in one side of discharge gate, and when level sensor 7 detected the discharge end and had the feed liquid, the blown down tank began to input the feed liquid to silo 11.

Optionally, the photocuring 3D printer further includes a cover (not shown in the figure), and the cover covers the base station 8, the printing platform 9, the driving device 10, the pumping device 1, the discharging device 2, the heating container 4 and the peristaltic pump 6 in a closed space. In this embodiment, photocuring 3D printer still includes control panel (not shown in the figure), and control panel sets up in the below of base station 8, and the cover body is connected with control panel's top, covers base station 8, print platform 9 and drive arrangement 10 and locates in the enclosure space for the ambient temperature that 3D printed keeps apart with ambient temperature on every side, avoids the effect that 3D printed to receive ambient temperature's direct influence, reduces the risk of printing the failure. The cover body is made of transparent plastic materials so as to observe the working condition of the printing platform 9. It should be noted that, the connection mode and the operation principle between the control panel and each electronic control component are already the prior art, and are not described herein again.

In order to better realize the temperature control of the 3D printing environment, a heater is arranged in the closed space and used for heating the closed space. Through heating the air in the enclosure space for the constancy of temperature in the enclosure space reaches 3D and prints required best ambient temperature, thereby improves 3D and prints the effect.

In the present embodiment, as shown in fig. 2, the heater is a PTC electric heater 12, and the PTC electric heater 12 is attached to the bottom of the base 8. In the present embodiment, two PTC electric heaters 12 are provided at the bottom of the base table 8, and the temperature in the enclosed space reaches the optimal ambient temperature required for 3D printing by the two PTC electric heaters 12 and is kept constant. Of course, in other embodiments, the heater may also be a warm air blower or other heating device such as an air conditioner.

In addition, as shown in fig. 3, a second temperature sensor 13 is disposed in the enclosed space, the second temperature sensor 13 is disposed on the driving device 10, and the second temperature sensor 13 is used for detecting the temperature in the enclosed space. The second temperature sensor 13 is used for detecting the ambient temperature, and controlling the PTC electric heater 12 to continue heating or stop heating according to the detection value of the second temperature sensor 13.

As shown in fig. 2 and 3, in the present embodiment, the driving device 10 includes a motor 101, a lead screw 102, a lead screw mount 104, and a connecting plate 105, the lead screw mount 104 being perpendicular to the base 8; one end of the connecting plate 105 is detachably connected with the printing platform 9, the other end of the connecting plate is sleeved on the screw nut 103, the motor 101 drives the screw 102 to rotate, the screw nut 103 is driven to do linear motion, the screw nut 103 drives the printing platform 9 to move up and down through the connecting plate 105, so that the printing platform 9 moves downwards to the material groove 11 to absorb material liquid, or moves upwards to print. The second temperature sensor 13 is provided at an intermediate position of the screw mount 104. The second temperature sensor 13 is arranged in the middle of the lead screw mounting seat 104, is closer to the working position of the printing platform 9, and can more accurately control the ambient temperature of 3D printing.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. The utility model provides a photocuring 3D printer, is including taking out material device (1) and discharging device (2), and the feed liquid passes through feed liquid conveying line (3) and follows take out material device (1) carry to discharging device (2), its characterized in that still includes:

the heating container (4) is arranged between the material pumping device (1) and the material discharging device (2), and the heating container (4) comprises an inlet and an outlet;

the feed liquid conveying pipeline (3) enters from the inlet of the heating container (4), extends out from the outlet and is connected with the discharging device (2), and the joints of the feed liquid conveying pipeline (3) and the inlet and the outlet are hermetically arranged;

liquid is contained in the heating container (4), and the liquid in the heating container (4) is heated, so that the liquid passing through the heating container (4) reaches a set temperature.

2. Photocuring 3D printer according to claim 1, characterized in that the feed liquid delivery line (3) located inside the heating container (4) is provided as a coiled line.

3. The photocuring 3D printer of claim 2, wherein the serpentine circuit is a serpentine circuit, a circular circuit, or an S-circuit.

4. Photocuring 3D printer according to claim 1, characterized in that the bottom of the heating container (4) is also provided with a first temperature sensor (5) for detecting the liquid temperature.

5. The photocuring 3D printer of claim 1, further comprising a peristaltic pump (6), wherein the peristaltic pump (6) is disposed between the material pumping device (1) and the heating container (4), and the peristaltic pump (6) is connected to the material liquid conveying pipeline (3) and is used for adjusting the flow rate of the material liquid in the material liquid conveying pipeline (3).

6. The photocuring 3D printer of claim 1, further comprising a liquid level sensor (7), wherein the liquid level sensor (7) is disposed at the liquid outlet end of the discharging device (2) and is used for detecting the liquid level of the liquid material entering the discharging device (2).

7. The photocuring 3D printer of any one of claims 1-6, further comprising a housing, a base (8), a printing platform (9), and a driving device (10), wherein the housing houses the base (8), the printing platform (9), the driving device (10), the pumping device (1), the discharging device (2), the heating container (4), and the peristaltic pump (6) in a closed space.

8. The photocuring 3D printer of claim 7, wherein a heater is disposed within the enclosed space for heating the enclosed space.

9. The photocuring 3D printer of claim 8, wherein the heater is a PTC electric heater (12), the PTC electric heater (12) being mounted to the bottom of the base station (8).

10. Photocuring 3D printer according to claim 7, characterized in that a second temperature sensor (13) is further arranged in the enclosed space, the second temperature sensor (13) being arranged on the drive device (10), the second temperature sensor (13) being configured to detect the temperature in the enclosed space.