阅读说明：本技术 一种具有多种热传递方式的3d打印塑料件再加热装置 (3D prints working of plastics reheating device with multiple heat transfer mode ) 是由 王肇贵 刘熙睿 于 2021-08-27 设计创作，主要内容包括：本发明提供一种具有多种热传递方式的3D打印塑料件再加热装置,为由第一加热结构和第二加热结构组成的一体式集成结构,其外表面设有电子触摸屏；第一加热结构和第二加热结构内分别设有第一工作腔室和第二工作腔室,第一工作腔室内设有油液加热结构,内部油液与待加热物体接触,对待加热物体进行热传导加热；第二工作腔室设有红外加热结构和通风加热结构,对待加热物体进行热辐射和/或热对流加热,实现多热传递形式耦合加载。本发明可使制件受热更加均匀,可为大尺寸物品提供更加高效的加热方式；整个装置可以提供多种加热方法,对应3D打印件可能出现的多种不同复杂形貌的结构给出更加灵活的退火后处理热传递形式,提高退火效率及效果。(The invention provides a 3D printing plastic part reheating device with multiple heat transfer modes, which is an integrated structure consisting of a first heating structure and a second heating structure, wherein an electronic touch screen is arranged on the outer surface of the integrated structure; a first working chamber and a second working chamber are respectively arranged in the first heating structure and the second heating structure, an oil liquid heating structure is arranged in the first working chamber, and internal oil liquid is in contact with an object to be heated to carry out heat conduction heating on the object to be heated; the second working chamber is provided with an infrared heating structure and a ventilation heating structure, and heat radiation and/or heat convection heating is carried out on an object to be heated, so that coupling loading in multiple heat transfer modes is realized. The invention can ensure that the workpiece is heated more uniformly, and can provide a more efficient heating mode for large-size articles; the whole device can provide various heating methods, provides a more flexible annealing post-treatment heat transfer form corresponding to various structures with different complex shapes possibly appearing on a 3D printing piece, and improves the annealing efficiency and effect.)

1. The 3D printing plastic piece reheating device with multiple heat transfer modes is characterized in that the reheating device is an integrated structure consisting of a first heating structure and a second heating structure arranged below the first heating structure, and an electronic touch screen (4) is arranged on the outer surface of the reheating device and used for controlling the operation of each heating structure; a first working chamber and a second working chamber are respectively arranged in the first heating structure and the second heating structure, an oil liquid heating structure is arranged in the first working chamber, and internal oil liquid is in contact with an object to be heated to carry out heat conduction heating on the object to be heated; the second working chamber is provided with an infrared heating structure and a ventilation heating structure, and heat radiation and/or heat convection heating is carried out on an object to be heated, so that coupling loading in multiple heat transfer modes is realized.

2. The device for reheating 3D printed plastic parts with multiple heat transfer modes according to claim 1, wherein the oil heating structure is an oil heating resistor (7) arranged at the bottom of the first working chamber and used for heating high-boiling-point oil injected into the first working chamber, and the heated oil is in contact with an object to be heated to form heat conduction heating.

3. The multi-heat transfer 3D printed plastic part reheating device of claim 2, wherein the oil has a boiling point in excess of 300 ℃.

4. The 3D printing plastic part reheating device with multiple heat transfer modes according to claim 1 or 2, wherein an internal cooling pipeline (6) is arranged on the inner side wall of the first working chamber, and the internal cooling pipeline (6) is connected with an external refrigerator through an external cooling pipeline (18) to cool oil; the internal cooling pipeline (6) is arranged in a snake-shaped pipeline.

5. 3D printed plastic part reheating device with multiple heat transfer modes according to claim 1, wherein a transparent glass (2) is arranged on the top cover (1) of the first working chamber, so that an operator can observe the inside situation to prevent danger.

6. The device for reheating 3D printed plastic parts with multiple heat transfer modes according to claim 1, wherein the infrared heating structure adopts an infrared heating mode and comprises a shell arranged in the second working chamber, a handle is arranged outside the shell, a containing chamber is arranged inside the shell, a carrying table (17) for placing an object to be heated is arranged at the bottom of the containing chamber, the inner wall of the containing chamber is a heating inner wall (12), a plurality of short-wave infrared heating lamps (13) distributed at intervals and inner air inlets (14) and inner air outlets (15) arranged at intervals are arranged on the inner wall, short-wave infrared light is emitted into the containing chamber through the short-wave infrared heating lamps (13), and is reflected onto the object to be heated through the heating inner wall (12), so that the object to be heated is heated in a heat radiation manner;

a hot air area is formed between the outer wall of the shell where the internal air inlet (14) is located and the inner wall of the second working chamber, an air outlet area is formed between the outer wall of the shell where the internal air outlet (15) is located and the inner wall of the second working chamber, the hot air area and the air outlet area are separated through a partition (16), one side of the partition (16) is connected with the outer wall of the shell, and the other side of the partition is in contact with the inner wall of the second working chamber;

the ventilation heating structure adopts a ventilation heating mode and comprises a blower box (5) arranged outside a reheating device, and a heating resistance wire (8) and a fan (9) which are arranged on the inner wall of a second working chamber and used for heating air, wherein one side of the blower box (5) is provided with an external air inlet (11), the external air inlet (11) is connected with one end of a ventilation pipeline (19), the other end of the ventilation pipeline (19) is connected with an external air outlet (10) arranged on a shell, the external air outlet (10) is communicated with an air outlet area, the heating resistance wire (8) and the fan (9) are positioned in a hot air area, the blower box (5) provides air for the fan (9), the fan (9) blows hot air generated by the heating resistance wire (8) in the hot air area into an accommodating chamber through an internal air inlet (14) to carry out heat convection heating on an object to be heated, the hot air is discharged to an air outlet area through an internal air outlet (15), and under the action of an air blower box (5), the hot air in the air outlet area is pumped out through an external air outlet (10) and a ventilation pipeline (19) and then is introduced into a hot air area;

the infrared heating mode and the ventilation heating mode can be carried out separately or simultaneously, and the coupling loading of multiple heat transfer modes is realized.

7. The device for reheating 3D printed plastic parts with multiple heat transfer manners according to claim 6, wherein the heating inner wall (12) is a perfect circle and is made of a material capable of reflecting infrared light, and the short wave infrared heating lamps (13) are uniformly distributed on the heating inner wall (12) so that the reflected short wave infrared light is finally converged at the center of the perfect circle, thereby realizing efficient heating.

8. A3D printed plastic part reheating device with multiple heat transfer modes according to claim 6 or 7, wherein the heating inner wall (12) is coated with quinacridone organic pigments to effectively reflect infrared rays.

9. The device for reheating 3D printed plastic parts according to claim 1 or 6, wherein the infrared heating structure is a drawer-type structure and is manually or automatically pulled out and pushed in from the second working chamber, and when the infrared heating structure is automatically pulled out and pushed in, the infrared heating structure is connected with a screw guide rail structure, and the screw guide rail structure is controlled by a motor to drive the infrared heating structure to be pulled out and pushed in.

Technical Field

The invention relates to the technical field of annealing and heating equipment for 3D printed products, in particular to a reheating device for 3D printed plastic parts, which has multiple heat transfer modes.

Background

The current primary oven is a heat convection type oven. The fan blows hot air into the oven to form heat convection. The infrared light emitted by the short-wave infrared heating lamp can penetrate into the object.

The heating and cooling errors of the heat convection type oven are large, the heating form is single, and large objects cannot be heated into the objects well; the object to be heated is mostly arranged on the frame, which can cause the condition that the periphery of the object is heated unevenly.

Disclosure of Invention

According to the heat convection type oven, the heating and cooling errors are large, the heating form is single, and large objects cannot be heated into the objects well; the object that waits to heat is arranged on the shelf mostly, can cause the technical problem of the uneven condition of being heated all around of object, and provides the 3D who has multiple heat transfer mode and prints working of plastics reheating device. According to the invention, the oil in the oil heating structure is mainly utilized to enable an object to be heated to be in more uniform and comprehensive contact with a heating medium, so that a workpiece is heated more uniformly; the heating inner wall of the infrared heating structure is made of a material capable of reflecting infrared light, so that the infrared light is focused at the circular center, and the infrared light can penetrate into the plastic product, thereby providing a more efficient heating mode for large-size articles; and by combining a thermal convection heating mode of a ventilation heating structure, the whole oven can provide multiple heating methods, and a more flexible heat transfer mode for annealing post-treatment can be provided corresponding to structures with multiple different complex shapes possibly appearing on the 3D printed piece, so that the annealing efficiency and the annealing effect are improved.

The technical means adopted by the invention are as follows:

A3D printing plastic part reheating device with multiple heat transfer modes is an integrated structure consisting of a first heating structure and a second heating structure arranged below the first heating structure, and an electronic touch screen is arranged on the outer surface of the reheating device and used for controlling the operation of each heating structure; a first working chamber and a second working chamber are respectively arranged in the first heating structure and the second heating structure, an oil liquid heating structure is arranged in the first working chamber, and internal oil liquid is in contact with an object to be heated to carry out heat conduction heating on the object to be heated; the second working chamber is provided with an infrared heating structure and a ventilation heating structure, and heat radiation and/or heat convection heating is carried out on an object to be heated, so that coupling loading in multiple heat transfer modes is realized.

Furthermore, the oil heating structure is an oil heating resistor arranged at the bottom of the first working chamber and used for heating high-boiling-point oil injected into the first working chamber, and the heated oil is in contact with an object to be heated to form heat conduction heating.

Further, the boiling point of the oil is over 300 ℃.

Furthermore, an internal cooling pipeline is arranged on the inner side wall of the first working chamber, and the internal cooling pipeline is connected with an external refrigerator through an external cooling pipeline to cool the oil liquid; the internal cooling pipeline is arranged in a serpentine pipeline.

Further, a top cover of the first working chamber is provided with a transparent glass cover, so that an operator can observe the internal condition to prevent danger.

Furthermore, the infrared heating structure adopts an infrared heating mode and comprises a shell arranged in the second working chamber, a handle is arranged outside the shell, an accommodating chamber is arranged inside the shell, an object stage for placing an object to be heated is arranged at the bottom of the accommodating chamber, the inner wall of the accommodating chamber is a heating inner wall, a plurality of short wave infrared heating lamps distributed at intervals, and inner air inlets and inner air outlets which are arranged at intervals are arranged on the inner wall, short wave infrared light is emitted into the accommodating chamber through the short wave infrared heating lamps, and is reflected to the object to be heated through the heating inner wall, so that the object to be heated is heated through heat radiation;

a hot air area is formed between the outer wall of the shell where the internal air inlet is located and the inner wall of the second working chamber, an air outlet area is formed between the outer wall of the shell where the internal air outlet is located and the inner wall of the second working chamber, the hot air area and the air outlet area are separated through a partition, one side of the partition is connected with the outer wall of the shell, and the other side of the partition is in contact with the inner wall of the second working chamber;

the ventilation heating structure adopts a ventilation heating mode and comprises a blower box arranged outside the reheating device, and a heating resistance wire and a fan which are arranged on the inner wall of the second working chamber and used for heating air, wherein an external air inlet is arranged on one side of the blower box, the external air inlet is connected to one end of a ventilation pipeline, the other end of the ventilation pipeline is connected with an external air outlet arranged on the shell, the external air outlet is communicated with an air outlet area, the heating resistance wire and the fan are positioned in a hot air area, the blower box provides air for the fan, the fan blows hot air generated by the heating resistance wire in the hot air area into the accommodating chamber through the internal air inlet, the object to be heated is heated by heat convection, and is discharged to the air outlet area through the internal air outlet, and under the action of the blower box, hot air in the air outlet area is pumped out through the external air outlet and the ventilation pipeline and then is introduced into the hot air area;

the infrared heating mode and the ventilation heating mode can be carried out separately or simultaneously, and the coupling loading of multiple heat transfer modes is realized.

Furthermore, the heating inner wall is a perfect circle and is made of materials capable of reflecting infrared light, and the short-wave infrared heating lamps are uniformly distributed on the heating inner wall, so that the reflected short-wave infrared light is finally converged at the center of the perfect circle, and efficient heating is realized.

Further, the heating inner wall is coated with quinacridone organic pigment to effectively reflect infrared rays.

Furthermore, the infrared heating structure is a drawer type structure and is pulled out and pushed in from the second working chamber manually or automatically, wherein when the infrared heating structure is pulled out and pushed in automatically, the infrared heating structure is connected with a screw guide rail structure, and the screw guide rail structure is controlled by a motor to drive the infrared heating structure to be pulled out and pushed in.

Compared with the prior art, the invention has the following advantages:

1. according to the 3D printing plastic piece reheating device with multiple heat transfer modes, the oil in the oil heating box can enable an object to be heated to be in more uniform and comprehensive contact with a heating medium, and further a workpiece is heated more uniformly.

2. According to the 3D printing plastic piece reheating device with multiple heat transfer modes, provided by the invention, in the heating drawer, the infrared heating wavelength is short wave, the inner wall of the infrared heating cavity is made of a material capable of reflecting infrared light, so that the infrared light is focused on the circular center, and the infrared light can penetrate into a plastic product, so that a more efficient heating mode is provided for large-size articles; in addition, the whole oven can provide multiple heating methods in a thermal convection heating mode, and a more flexible heat transfer mode for annealing post-treatment can be provided corresponding to structures with multiple different complex shapes possibly appearing on the 3D printed piece, so that the annealing efficiency and the annealing effect are improved.

In conclusion, the technical scheme of the invention can solve the problems that the heat convection type oven in the prior art has large heating and cooling errors and single heating form, and can not heat a large object to the inside of the object well; the object to be heated is mostly arranged on the frame, which can cause the problem that the periphery of the object is heated unevenly.

For the reasons, the method can be widely popularized in the fields of post-treatment of 3D printing plastic products and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a three-mode heat transfer oven according to the present invention.

Fig. 2 is a three-dimensional view of the present invention.

Fig. 3 is a perspective view of fig. 2.

FIG. 4 is a schematic view of the drawing out of the heating drawer according to the present invention.

Fig. 5 is a schematic structural view of an oil heating chamber according to the present invention.

Fig. 6 is a schematic view of the ventilation heating structure of the present invention.

Fig. 7 is a schematic structural diagram of an infrared heating device according to the present invention.

Fig. 8 is a schematic structural view of the back of the oven of the present invention.

Fig. 9 is a schematic structural diagram of a lower heating chamber according to the present invention.

In the figure: 1. a top cover; 2. transparent glass; 3. heating the drawer; 4. an electronic touch screen; 5. a blower box; 6. an internal cooling circuit; 7. heating resistance of oil liquid; 8. heating resistance wires; 9. a fan; 10. an external air outlet; 11. an external air inlet; 12. heating the inner wall; 13. a short wave infrared heating lamp; 14. an internal air inlet; 15. an internal air outlet; 16. separating; 17. an object stage; 18. an external cooling circuit; 19. a ventilation pipeline.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

As shown in fig. 1 to 9, the invention provides a 3D printing plastic part reheating device with multiple heat transfer modes, which is applied to post-treatment of 3D printing plastic products, mainly faces to high temperature resistant thermoplastic materials (such as polyetheretherketone, polyphenylene sulfide, polyetherimide, and the like), and can provide multiple different annealing reheating methods for the 3D printing plastic products to eliminate the thermal residual stress of the printed products and enhance the mechanical strength thereof. The device integrates three heating modes, which respectively correspond to three heat transfer basic forms of heat conduction, heat radiation and heat convection.

The 3D printing plastic piece reheating device with multiple heat transfer modes is an integrated structure consisting of a first heating structure and a second heating structure arranged below the first heating structure, and an electronic touch screen 4 is arranged on the outer surface of the integrated structure and used for controlling the operation of each heating structure; a first working chamber and a second working chamber are respectively arranged in the first heating structure and the second heating structure, an oil liquid heating structure is arranged in the first working chamber, and internal oil liquid is in contact with an object to be heated to carry out heat conduction heating on the object to be heated; the second working chamber is provided with an infrared heating structure and a ventilation heating structure, and heat radiation and/or heat convection heating is carried out on an object to be heated, so that coupling loading in multiple heat transfer modes is realized. In this embodiment, reheating device divide into two chambeies about, and the epicoele (first working chamber) is fluid heating chamber, and lower chamber (second working chamber) is air heating chamber, ventilates heating (thermal convection heating) and shortwave infrared heating chamber (thermal radiation heating) promptly. When the oven (reheating device) works, the electronic touch screen 4 controls three heating modes. The liquid heating chamber of first work cavity can make the product heating even, and the infrared heating chamber in the second work cavity can make the product inside be heated better, and ventilation heating is more high-efficient.

In a preferred embodiment, the oil heating structure is an oil heating resistor 7 disposed at the bottom of the first working chamber, and is used for heating the high-boiling-point oil injected into the first working chamber, and the heated oil is in contact with an object to be heated to form heat conduction heating. The boiling point of the oil liquid is over 300 ℃. An internal cooling pipeline 6 is arranged on the inner side wall of the first working chamber, the internal cooling pipeline 6 is connected with an external refrigerator through an external cooling pipeline 18, the refrigerating effect of an upper chamber is achieved, and oil is cooled; the internal cooling circuit 6 is arranged in a serpentine circuit. The top cover 1 of the first working chamber is provided with transparent glass 2, so that an operator can observe the internal condition to prevent danger. The oil liquid heating mode specifically comprises the following steps: the oil heating resistor 7 heats the oil in the chamber to a specified temperature, an object to be heated is put into the oil to start working, and the transparent glass 2 for observation on the top cover 1 enables an operator to observe the internal condition so as to prevent danger. When the temperature needs to be reduced, the external cooling pipeline 18 connected with the internal cooling pipeline 6 is connected with the refrigerator, so that the temperature reduction operation is realized.

As a preferred embodiment, the infrared heating structure adopts an infrared heating mode and comprises a shell arranged in the second working chamber, a handle is arranged outside the shell, an accommodating chamber is arranged inside the shell, an object stage 17 for placing an object to be heated is arranged at the bottom of the accommodating chamber, the inner wall of the accommodating chamber is a heating inner wall 12, a plurality of short wave infrared heating lamps 13 distributed at intervals and inner air inlets 14 and inner air outlets 15 arranged at intervals are arranged on the inner wall, short wave infrared light is emitted into the accommodating chamber through the short wave infrared heating lamps 13 and is reflected onto the object to be heated through the heating inner wall 12, and the object to be heated is heated through thermal radiation; a hot air area is formed between the outer wall of the shell where the internal air inlet 14 is located and the inner wall of the second working chamber, an air outlet area is formed between the outer wall of the shell where the internal air outlet 15 is located and the inner wall of the second working chamber, the hot air area and the air outlet area are separated by a partition 16, one side of the partition 16 is connected with the outer wall of the shell, and the other side of the partition 16 is in contact with the inner wall of the second working chamber; the ventilation heating structure adopts a ventilation heating mode and comprises a blower box 5 arranged outside a reheating device, and a heating resistance wire 8 and a fan 9 which are arranged on the inner wall of a second working chamber and used for heating air, wherein an external air inlet 11 is arranged on one side of the blower box 5, the external air inlet 11 is connected to one end of a ventilation pipeline 19, the other end of the ventilation pipeline 19 is connected with an external air outlet 10 arranged on a shell, the external air outlet 10 is communicated with an air outlet area, the heating resistance wire 8 and the fan 9 are positioned in a hot air area, the blower box 5 provides air for the fan 9, the fan 9 blows hot air generated by the heating resistance wire 8 in the hot air area into a containing chamber through an internal air inlet 14, a body to be heated is subjected to thermal convection heating, the hot air is discharged to the air outlet area through an internal air outlet 15, and under the action of the blower box 5, the hot air in the air outlet area is discharged through the external air outlet 10, The ventilation pipeline 19 is pumped out and then is introduced into the hot air area, the hot air in the air outlet area is discharged into the hot air area again and mixed with cold air to enter the heating resistance wires, so that the cyclic utilization can be realized, and meanwhile, the heating resistance wires heat the mixed air with a certain temperature, so that the heating time can be reduced; the infrared heating mode and the ventilation heating mode can be carried out separately or simultaneously, and the coupling loading of multiple heat transfer modes is realized. The infrared heating mode is specifically as follows: an object to be heated is placed on the stage 17, and short wave infrared light is emitted into the chamber by the short wave infrared heating lamp 13 to heat the object. The ventilation heating mode is specifically as follows: the fan 9 blows hot air generated by the heating resistance wire 8 into the heating cavity through the internal air inlet 14 and discharges the hot air through the internal air outlet 15, and the hot air area and the air outlet area are separated by the air inlet and outlet partition 16.

In a preferred embodiment, the heating inner wall 12 is a perfect circle and made of a material capable of reflecting infrared light, and the plurality of short-wave infrared heating lamps 13 are uniformly distributed on the heating inner wall 12, so that the reflected short-wave infrared light is finally converged at the center of the perfect circle, and efficient heating is realized. The heating inner wall 12 is coated with quinacridone organic pigment to effectively reflect infrared rays.

As a preferred embodiment, the infrared heating structure is a drawer type structure, and is a heating drawer 3, and is manually or automatically pulled out and pushed into the second working chamber, wherein when the infrared heating structure is automatically pulled out and pushed into the second working chamber, the infrared heating structure is connected with a screw guide rail structure, and the screw guide rail structure is controlled by a motor to drive the infrared heating structure to be pulled out and pushed into the second working chamber.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.