Hot bed device and 3D printer

Abstract

The utility model relates to the field of 3D printing, in particular to a hot bed device and a 3D printer, and the hot bed device comprises a hot bed assembly connected to the 3D printer; the printing platform assembly is connected to the hot bed assembly in a sliding mode, the printing platform assembly can slide to a first position in the forward direction of the first direction, and the printing platform assembly can further slide to be separated from the hot bed assembly in the reverse direction of the first direction; the fixing assembly is detachably connected to the hot bed assembly, and the fixing assembly is configured to fix the printing platform assembly located at the first position to the first position; the hot bed assembly is configured to heat the printing platform assembly fixed at the first position. According to the invention, the printing efficiency is improved, and the model dismounting difficulty is reduced.

Description

Technical Field

[0001] The present application relates to the field of 3D printing, and in particular to a hot bed device and a 3D printer. Background Art

[0002] Driven by the intelligentization of computer digital technology, the application of 3D printing technology is becoming more and more extensive. 3D printing is increasingly used in production and life, and various large models are being produced using 3D printing. However, for users, it is difficult to remove the large model formed by printing from the platform. It takes a long time to remove the printed model before continuing to print the next model. In addition, the 3D printer that prints large models is also large in size, which further increases the difficulty of removing the model. Utility Model Content

[0003] An embodiment of the present application provides a hot bed device and a 3D printer, in which the printing platform assembly can slide to be separated from the hot bed assembly, which not only facilitates the removal of the model on the printing platform assembly, but also allows the replacement of the printing platform assembly without waiting for the model to be removed before continuing printing, thereby improving printing efficiency.

[0004] An embodiment of the present application provides a hot bed device, which includes:

[0005] A heated bed assembly connected to a 3D printer;

[0006] A printing platform assembly is slidably connected to the heated bed assembly, wherein the printing platform assembly can slide in a positive direction of a first direction to a first position, and the printing platform assembly can also slide in a reverse direction of the first direction to be separated from the heated bed assembly; and

[0007] a fixing assembly, detachably connected to the heated bed assembly, wherein the fixing assembly is configured to fix the printing platform assembly located at the first position at the first position;

[0008] The heated bed assembly is configured to heat the printing platform assembly.

[0009] A 3D printer provided in one embodiment of the present application includes the above-mentioned hot bed device.

[0010] Compared with the prior art, the beneficial features of the embodiments of the present application are as follows: the hot bed device and the 3D printer include a hot bed assembly connected to the 3D printer; a printing platform assembly slidably connected to the hot bed assembly, the printing platform assembly can slide to a first position in a positive direction of a first direction, and the printing platform assembly can also slide in a reverse direction of the first direction to be separated from the hot bed assembly; and a fixing assembly detachably connected to the hot bed assembly, the fixing assembly is configured to fix the printing platform assembly located at the first position at the first position; the hot bed assembly is configured to heat the printing platform assembly, and through the implementation of the present application, not only is it convenient to load and unload the printing platform assembly, and the assembly efficiency is improved, but also after the printing is completed, the printing platform assembly attached with the model can be slid to be separated from the 3D printer, and then a new printing platform assembly can be installed on the hot bed assembly to continue printing the next model, without waiting for the model to be removed before starting printing, thereby improving the printing efficiency, and after the printing platform assembly is separated from the 3D printer and then the model attached to the printing platform assembly is removed, the 3D printer can be prevented from interfering with the removal of the model, further reducing the difficulty of removing the model. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the hot bed device in the embodiment of the present application;

[0012] Figure 2 for Figure 1 A magnified view of the local A structure;

[0013] Figure 3 for Figure 1 The schematic diagram of the hot bed device structure shown;

[0014] Figure 4 for Figure 3 A magnified view of the local B structure;

[0015] Figure 5 for Figure 3 A magnified view of the local C structure;

[0016] Figure 6 for Figure 3 Right view of;

[0017] Figure 7 for Figure 6 A magnified view of the local D structure;

[0018] Figure 8 for Figure 1 An exploded view of the hot bed apparatus shown with the base assembly removed;

[0019] Fig. 9 for Figure 1 An exploded view of the hot bed apparatus shown with the base assembly removed;

[0020] Fig.10 for Fig. 9 A schematic diagram of the structure of a hot bed assembly in a hot bed device shown;

[0021] Fig.11 for Fig.10 The schematic diagram of the hot bed assembly structure shown;

[0022] Fig.12 for Fig.11 A magnified view of the local E structure;

[0023] Fig.13 for Fig.10 An exploded view of the heated bed assembly is shown;

[0024] Wherein: 1-heating bed assembly (1a-first end of the heating bed assembly, 1b-second end of the heating bed assembly, 101-guide channel, 102-base part (1021-first profile, 1022-second profile), 103-heating part (1031-heating body), 104-heat conducting part (1041-heating body, 1042-heating body group (1042a-first heat conducting body group, 1042b-second heat conducting body group)), 105-support part (1051-pad body), 106-limiting part (1061-blocking sheet body, 1062-guide body)), 2-printing platform assembly ( 2a-the first end of the printing platform assembly, 2b-the second end of the printing platform assembly, 201-platform plate portion (201a-the first end of the platform plate portion, 201b-the second end of the platform plate portion, 2011-printing surface), 202-rib portion (202a-the first end of the rib portion, 202b-the second end of the rib portion)), 3-fixing assembly (301-first fixing portion (3011-first pressure strip body, 3012-first fastening body), 302-second fixing portion (3021-second pressure strip body, 3022-second fastening body)), 4-base assembly (401-second threaded hole). DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0028] Please refer to Figure 1 , Figure 3 and Figure 6 The hot bed device of the embodiment of the present application includes a hot bed assembly 1, a printing platform assembly 2 and a fixing assembly 3. The hot bed assembly 1 is connected to the 3D printer. The printing platform assembly 2 is slidably connected to the hot bed assembly 1. The printing platform assembly 2 can slide to a first position along a positive direction of a first direction, and the printing platform assembly 2 can also slide in a reverse direction of the first direction to be separated from the hot bed assembly 1. The fixing assembly 3 is detachably connected to the hot bed assembly 1, and the fixing assembly 3 is configured to fix the printing platform assembly 2 located at the first position at the first position. The hot bed assembly 1 is configured to heat the printing platform assembly 2 fixed at the first position.

[0029] It is understandable that the hot bed device may include one printing platform assembly 2, or the hot bed device may also include multiple printing platform assemblies 2. Moreover, each printing platform assembly 2 can be reused multiple times, which is more energy-saving and environmentally friendly, and reduces printing costs.

[0030] In some embodiments, the hot bed device may include a hot bed assembly 1 and multiple printing platform assemblies 2, and the multiple printing platform assemblies 2 may be slidably matched with the hot bed assembly 1. As an example, before printing, one of the printing platform assemblies 2 may be slidably connected to the hot bed assembly 1, and the printing platform assembly 2 may be slid to a first position, and then the printing platform assembly 2 may be fixed at the first position by a fixing assembly 3. Please refer to Figure 1 As shown, printing can begin. After printing is completed, the fixing component 3 can be disassembled to release the restriction on the printing platform component 2, and then the printing platform component 2 with the model attached can be slid to separate from the hot bed component 1, that is, the printing platform component 2 with the model attached can be slid to separate from the 3D printer, and then another printing platform component 2 can be slid and connected to the hot bed component 1, and fixed to the first position of the hot bed component 1, and then the next model can be printed. There is no need to stop and wait for the model to be removed before starting printing, which improves printing efficiency. Moreover, after the printing platform component 2 is separated from the 3D printer, it is easier to remove the model attached to the printing platform component 2, which reduces the difficulty of removing the model, is more conducive to completely removing the model, and is not easy to damage the model, which further improves the success rate of 3D printing and further avoids the problem of successful model printing but unsuccessful model removal.

[0031] In other embodiments, the hot bed assembly 1 may include a hot bed assembly 1 and a printing platform assembly 2. Although it is necessary to stop and wait for the model to be removed before printing can be started again, the printing platform assembly 2 is slidably connected to the hot bed assembly 1, which not only makes it easy to load and unload the printing platform assembly 2, thereby improving the assembly efficiency and thus the printing efficiency, but also makes it easier to remove the model attached to the printing platform assembly 2 after separating the printing platform assembly 2 from the 3D printer, thereby reducing the difficulty of removing the model, being more conducive to completely removing the model, and not easily damaging the model, thereby further improving the success rate of 3D printing and further avoiding the problem of successful model printing but unsuccessful model removal.

[0032] It is understandable that the fixing assembly 3 can be directly and detachably connected to the hot bed assembly 1, so that the hot bed device structure is simpler. Alternatively, the fixing assembly 3 can also be indirectly and detachably connected to the hot bed assembly 1, such as Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, damage to the heated bed assembly 1 caused by frequent disassembly of the fixing assembly 3 can be avoided, thereby increasing the service life of the heated bed assembly 1.

[0033] The printing platform assembly 2 may include a platform plate portion 201 and a rib portion 202. Figure 8 and Fig. 9 The rib portion 202 is fixed to the platform plate portion 201, and the rib portion 202 extends along a first direction.

[0034] Please refer to Fig. 9 and Fig.10 As shown, the above-mentioned hot bed assembly 1 may have a guide channel 101 extending along the first direction, and the guide channel 101 is configured to slide with the ribs 202 along the first direction. The ribs 202 can not only improve the strength of the platform plate 201 and prevent the platform plate 201 from deforming during the printing process, but also the ribs 202 cooperate with the guide channel 101 to play a guiding role, so that the printing platform assembly 2 can slide quickly and accurately along the first direction, thereby improving the assembly efficiency and assembly accuracy.

[0035] As an example, the platform plate portion 201 and the rib portion 202 may be fixed together by a screw member. For example, the screw member may be a screw.

[0036] The platform plate 201 may be a tough plate. After the hot bed assembly 1 with the model attached is separated from the 3D printer, the platform plate 201 may be bent along the ribs 202 to cause elastic deformation of the platform plate 201 and smoothly separate from the hardened model, which is more conducive to completely removing the model, achieving the effect of quickly and labor-savingly removing the model, further improving the demoulding efficiency and the success rate of 3D printing, and making it more convenient to use.

[0037] Optionally, the platform plate 201 can be a fiberglass plate, which is not only tough, but also high temperature resistant and has good adhesion, thereby increasing the service life and 3D printing success rate of the platform plate 201. In addition, the problem of glass platform plates being easily damaged during transportation and having high transportation costs in the related art can be solved.

[0038] It is understandable that in other embodiments, the platform plate portion 201 may also be a plate made of other materials, and the platform plate portion 201 may not be a tough plate.

[0039] Please refer to Figure 3 , Figure 8 and Fig. 9 The printing platform assembly 2 may include a plurality of ribs 202. All ribs 202 are respectively fixed to the platform plate 201, and all ribs 202 are spaced apart along the second direction, wherein the second direction is perpendicular to the first direction.

[0040] Please refer to Figure 3 , Fig. 9 and Fig.10 The above-mentioned hot bed assembly 1 may have a plurality of guide channels 101. The guide channels 101 are slidably matched with the ribs 202 in a one-to-one correspondence. Figure 5 A plurality of ribs 202 are fixed on the platform plate 201, which further improves the strength of the platform plate 201. Moreover, the plurality of ribs 202 can better limit the bending direction of the platform plate 201, thereby preventing the platform plate 201 from deforming randomly when the platform plate 201 is bent to remove the model, and further protecting the model and the platform plate 201.

[0041] Optionally, the rib 202 may be an aluminum profile, which is not only light in weight but also can improve the strength of the platform plate 201 so that the platform plate 201 can only be bent in a specific direction, thereby further protecting the model and the platform plate 201 .

[0042] Please refer to Fig.13 The above-mentioned heated bed assembly 1 may include a base portion 102 and a heating portion 103. The base portion 102 is fixed to the 3D printer. The heating portion 103 is configured to heat the platform plate portion 201 in different zones. The heating portion 103 may include a plurality of heating bodies 1031, which are respectively fixed to the base portion 102, and the plurality of heating bodies 1031 are configured to heat the platform plate portion 201 independently.

[0043] As an example, please refer to Fig. 9The platform plate 201 may have a printing surface 2011 for receiving the model. The printing surface 2011 may be divided into a plurality of printing areas, and the heating bodies 1031 are arranged in one-to-one correspondence with the printing areas. During printing, one or more heating bodies 1031 may be controlled to work simultaneously according to the actual printing area of ​​the current model, heating the printing area with the model attached, and not heating the printing area without the model attached, thereby effectively solving the problem of high energy consumption of full-size heating of the heating part 103. The zoned heating may select the heating area according to the actual size of the model, thereby achieving energy-saving effect.

[0044] It is understandable that in other embodiments, one or more heating units 103 may be controlled to operate according to other conditions.

[0045] As an example, the heating part 103 may be a heating plate, which may integrate heating and temperature measurement functions. The heating plate is a prior art, and thus will not be described in detail.

[0046] Please refer to Figures 9 to 13 The heated bed assembly 1 may further include a heat conducting portion 104. The heat conducting portion 104 may include a plurality of heat conductors 1041, and all the heat conductors 1041 are respectively fixed to the base portion 102. One heat conductor 1041 is arranged corresponding to at least one heating body 1031, and the heating body 1031 is fixed to the corresponding heat conductor 1041. The heat conductor 1041 is configured to conduct the heat generated by the corresponding heating body 1031 to the platform plate portion 201, so that the platform plate portion 201 can be heated more evenly, further protecting the model and improving the 3D printing quality.

[0047] As an example, the heater 1031 can be attached to the surface of the heat conductor 1041, further improving the heating effect, so that the heat generated by the heater 1031 can be more efficiently conducted to the heat conductor 1041, thereby more efficiently conducting the heat generated by the heater 1031 to the platform plate 201.

[0048] Optionally, the heat conducting part 104 may be made of aluminum alloy, which is not only light in weight but also has high thermal conductivity and strength, further improving the heating effect and service life of the heated bed assembly 1. It is understandable that in other embodiments, the heat conducting part 104 may also be made of other materials with high thermal conductivity and high strength.

[0049] Please refer to Figures 9 to 13 The above-mentioned heat conductive part 104 may include a plurality of columns of heat conductive body groups 1042, each column of heat conductive body groups 1042 includes at least one heat conductive body 1041, and there is a gap between two adjacent columns of heat conductive body groups 1042, and the gap is configured as a guide channel 101, so that the layout is more compact, so that the platform plate part 201 can be fully heated.

[0050] It is understandable that the number of heat conductors 1041 included in each column of heat conductor groups 1042 may be the same. Alternatively, the number of heat conductors 1041 included in each column of heat conductor groups 1042 may be different. Fig. 9 , Fig.10 and Fig.13 As shown, you can set it as needed.

[0051] As an example, please refer to Figures 9 to 13 , the heat conducting part 104 may include a plurality of heat conducting body groups 1042 evenly spaced along the second direction. The heat conducting body groups 1042 may be divided into a first heat conducting body group 1042a and a second heat conducting body group 1042b. The heat conducting part 104 may include a plurality of first heat conducting body groups 1042a and two second heat conducting body groups 1042b. Among them, the first heat conducting body group 1042a is arranged in the middle, and the two second heat conducting body groups 1042b are arranged on both sides of the first heat conducting body group 1042a. In actual use, the first heat conducting body group 1042a in the middle is used more frequently, while the second heat conducting body groups 1042b on both sides are used less frequently than the first heat conducting body group 1042a in the middle. Therefore, in order to heat the printing area in the middle portion more accurately and facilitate installation of the heat conducting part 104 , each first heat conductor group 1042 a may include a plurality of heat conductors 1041 , and each second heat conductor group 1042 b may include one heat conductor 1041 .

[0052] It is understandable that in other embodiments, the second heat conductor group 1042b may also include multiple heat conductors 1041, and the number of heat conductors 1041 included in each column of the second heat conductor group 1042b may also be equal to the number of heat conductors 1041 included in each column of the first heat conductor group 1042a, which can be set as needed.

[0053] Please refer to Figure 5 ,and Figures 10 to 13 The above-mentioned hot bed assembly 1 can also include a plurality of supporting parts 105 and a plurality of limiting parts 106.

[0054] Please refer to Figure 5 ,and Figures 10 to 13, the above-mentioned support portion 105 can be arranged in one-to-one correspondence with the heat conductor group 1042, and each support portion 105 is arranged between the corresponding heat conductor group 1042 and the base portion 102. The support portion 105 can be used to support the heat conductor group 1042. As an example, the height of the guide channel 101 can be adjusted by adjusting the height of the support portion 105, so that the height of the guide channel 101 can match the height of the rib portion 202, so that the platform plate portion 201 is in full contact with the heat conductor 104, which not only has a better heating effect, but also can further protect the platform plate portion 201, and avoid the platform plate portion 201 from being fully supported and deformed due to the mismatch between the height of the guide channel 101 and the height of the rib portion 202.

[0055] Please refer to Figure 5 ,and Figures 10 to 13 The limiting portion 106 can be fixed to the base portion 102 and located between two adjacent supporting portions 105. The limiting portion 106, two adjacent supporting portions 105 and two adjacent rows of heat conductor groups 1042 together define the guide channel 101. The limiting portion 106 can serve as the bottom of the guide channel 101 to support and guide the rib portion 202.

[0056] In some embodiments, each support portion 105 may include two pad blocks 1051. Figures 10 to 13 As shown, the two pad bodies 1051 extend along the first direction respectively, and the two pad bodies 1051 are respectively arranged on both sides of the bottom of the corresponding heat conductor group 1042, so as to more effectively adjust the height of the heat conductor group 1042 and reduce the distance between the heat conductor group 1042 and the platform plate portion 201 as much as possible, so that the platform plate portion 201 can be fully heated.

[0057] Optionally, refer to Figures 10 to 13 As shown, the limiting portion 106 may include a baffle body 1061 extending along the first direction and a guide body 1062 fixed to the baffle body 1061. The baffle body 1061 can be supported at the bottom of the rib portion 202 to prevent the platform plate portion 201 from falling, further protect the platform plate portion 201, and ensure the printing effect. The guide body 1062 can more accurately define the position of the printing platform assembly 2 on the hot bed assembly 1, thereby improving the assembly accuracy. As an example, each limiting portion 106 may include a plurality of guide bodies 1062, and the plurality of guide bodies 1062 may be fixed to the baffle body 1061 in sequence along the first direction. It is understandable that the guide body 1062 may also be other structures, which will not be described in detail here.

[0058] As an example, the support portion 105 and the limiting portion 106 can be fixed to the base portion 102 by screws, respectively. The heat conductor group 1042 can also be fixed to the support portion 105 by screws. For example, the screws can be screws.

[0059] Optionally, the base 102 can be made of aluminum profiles, which is not only light in weight but also high in strength and not easy to deform, further improving the quality and service life of the hot bed device. Fig.10 and Fig.13 The base portion 102 can be formed by splicing a first profile 1021 and a second profile 1022. The first profile 1021 extends along a first direction, and the second profile 1022 extends along a second direction. The first profile 1021 and the second profile 1022 are fixed into one by screws.

[0060] The above-mentioned hot bed device may also include a base assembly 4 fixed to the 3D printer, please refer to Figures 1 to 7 The heated bed assembly 1 is fixed to the base assembly 4, and the heated bed assembly 1 has a first end 1a located in the positive direction of the first direction and a second end 1b located in the opposite direction of the first direction.

[0061] As an example, the hot bed assembly 1 can be fixed to the base assembly 4 by means of screws, which is not only convenient for loading and unloading, but also convenient for replacing damaged components.

[0062] It can be understood that, in some embodiments, the threaded parts for fixing the heated bed assembly 1 and the base assembly 4 can include adjusting bolts, and the heated bed assembly 1 can be adjusted to be roughly horizontal by adjusting bolts and then locked, so as to level the heated bed assembly 1 and fix the heated bed assembly 1 and the base assembly 4. The adjusting bolts are prior art and are therefore not described in detail.

[0063] Please refer to Figure 1 , Figure 6 , Figure 8 and Fig. 9 , the above-mentioned fixing assembly 3 may include a first fixing portion 301 and a second fixing portion 302. The first fixing portion 301 and the second fixing portion 302 may be detachably connected to the base assembly 4, respectively. The first fixing portion 301 is disposed at the first end 1a of the hot bed assembly 1, and the second fixing portion 302 is disposed at the second end 1b of the hot bed assembly 1. The first fixing portion 301 and the second fixing portion 302 jointly fix the printing platform assembly 2 at the first position of the hot bed assembly 1. In some embodiments, after printing is completed, when the printing platform assembly 2 needs to be removed, only the second fixing portion 302 may be removed, and the printing platform assembly 2 may be slid in the opposite direction of the first direction to be separated from the hot bed assembly 1, which is simple to operate. In other embodiments, when the printing platform assembly 2 needs to be removed, the first fixing portion 301 and the second fixing portion 302 may be removed, and the printing platform assembly 2 may be slidably removed.

[0064] In some examples, the printing platform assembly 2 may be first slid along the positive direction of the first direction to the first position, see Figure 1As shown, the printing platform assembly 2 is then fixed at the first position by the first fixing portion 301 and the second fixing portion 302, and printing can begin. After printing is completed, the second fixing portion 302 is removed, and the printing platform assembly 2 with the model attached is slid in the opposite direction of the first direction until it is separated from the 3D printer, and then a new printing platform assembly 2 is installed on the hot bed assembly 1 to continue printing.

[0065] Optionally, refer to Figure 6 and Figure 7 The first fixing part 301 may include a first pressure strip body 3011 and a first fastening body 3012. The first pressure strip body 3011 may be pressed on the first end 2a of the printing platform assembly 2, and the first fastening body 3012 may directly or indirectly fix the first pressure strip body 3011 pressed on the printing platform assembly 2 to the hot bed assembly 1, which has a simple structure, low cost and convenient use.

[0066] Optionally, refer to Figure 3 , Figure 4 and Figure 6 The second fixing part 302 may include a second pressure strip body 3021 and a second fastening body 3022. The second pressure strip body 3021 may be pressed on the second end 2b of the printing platform assembly 2, and the second fastening body 3022 may directly or indirectly fix the second pressure strip body 3021 pressed on the printing platform assembly 2 to the hot bed assembly 1, which has a simple structure, low cost and convenient use.

[0067] In some embodiments, the base assembly 4 may be provided with a first threaded hole (not shown) that cooperates with the first fastener 3012, and the base assembly 4 may be provided with a second threaded hole 401 that cooperates with the second fastener 3022. Figure 2 As shown, the fixing assembly 3 is indirectly and detachably connected to the heated bed assembly 1, which can protect the heated bed assembly 1 and avoid damage to the heated bed assembly 1 when the fixing assembly 3 is removed, thereby increasing the service life of the heated bed assembly 1.

[0068] As an example, please refer to Figure 6 and Figure 7 As shown, the first pressure strip body 3011 and the second pressure strip body 3021 can be pressed only on the upper surface of the rib portion 202, but not on the platform plate portion 201, which can protect the platform plate portion 201 and improve the service life of the platform plate portion 201. In addition, the first pressure strip body 3011 can abut against the end surface of the first end 201a of the platform plate portion 201, and the second pressure strip body 3021 can abut against the end surface of the second end 201b of the platform plate portion 201, thereby limiting the printing platform assembly 2 to the first position, preventing the printing platform assembly 2 from moving relative to the hot bed assembly 1 during printing, and further improving the printing accuracy.

[0069] It is understandable that in other embodiments, the first pressure strip body 3011 and the second pressure strip body 3021 may not contact the platform plate portion 201 at all, and the first pressure strip body 3011 and the second pressure strip body 3021 may be pressed on the upper surface of the rib portion 202 and abut against the first end 202a and the second end 202b of the rib portion 202, thereby limiting the printing platform assembly 2 to the first position. Alternatively, other methods may be used to limit the printing platform assembly 2 to the first position, which will not be described in detail herein.

[0070] The 3D printer of the embodiment of the present application includes any one of the above-mentioned hot bed devices.

[0071] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above embodiments only express the preferred implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A hot bed device, characterized in that: It includes: A heated bed assembly connected to a 3D printer; A printing platform assembly is slidably connected to the hot bed assembly, wherein the printing platform assembly can slide in a positive direction of a first direction to a first position, and the printing platform assembly can also slide in a reverse direction of the first direction to be separated from the hot bed assembly; and a fixing assembly, detachably connected to the heated bed assembly, wherein the fixing assembly is configured to fix the printing platform assembly located at the first position at the first position; The heated bed assembly is configured to heat the printing platform assembly fixed in the first position.

2. The hot bed device according to claim 1, characterized in that: The printing platform assembly includes a platform plate portion and a rib portion fixed to the platform plate portion, wherein the rib portion extends along the first direction; The heated bed assembly has a guide channel extending along the first direction, and the guide channel is configured to slide with the rib portion along the first direction.

3. The hot bed device according to claim 2, characterized in that: The platform plate portion is a tough plate.

4. The hot bed device according to claim 2, characterized in that: The printing platform assembly includes a plurality of ribs, which are respectively fixed to the platform plate and spaced apart along a second direction, wherein the second direction is perpendicular to the first direction; The hot bed assembly has a plurality of guide channels, and the guide channels are slidably matched with the ribs in a one-to-one correspondence.

5. The hot bed device according to claim 2, characterized in that: The heated bed assembly comprises a base portion and a heating portion; The base portion is fixed to the 3D printer; The heating part is configured to heat the platform plate part in different areas, and the heating part includes a plurality of heating bodies, which are respectively fixed to the base part, and the plurality of heating bodies are configured to heat the platform plate part independently and respectively.

6. The hot bed device according to claim 5, characterized in that: The heated bed assembly further comprises a heat conducting part, the heat conducting part comprises a plurality of heat conductors, the plurality of heat conductors are respectively fixed to the base part, one of the heat conductors is arranged corresponding to at least one of the heating bodies, and the heating body is fixed to the corresponding heat conductor; The heat conductor is configured to conduct heat generated by the corresponding heating body to the platform plate portion.

7. The hot bed device according to claim 6, characterized in that: The heat conducting part includes a plurality of columns of heat conductor groups, each column of the heat conductor groups includes at least one heat conductor, and there is a gap between two adjacent columns of the heat conductor groups, and the gap is configured as the guide channel.

8. The hot bed device according to claim 7, characterized in that: The hot bed assembly further includes a plurality of supporting parts and a plurality of limiting parts; The support parts are arranged one by one with the heat conductor groups, and are cushioned between the corresponding heat conductor groups and the base parts; The limiting portion is fixed to the base portion and is located between two adjacent supporting portions. The limiting portion, two adjacent supporting portions and two adjacent rows of heat conductor groups jointly define the guide channel.

9. The hot bed device according to claim 1, characterized in that: The heated bed device further comprises a base assembly fixed to the 3D printer, the heated bed assembly is fixed to the base assembly, and the heated bed assembly has a first end located in the positive direction of the first direction and a second end located in the opposite direction of the first direction; The fixing assembly includes a first fixing portion and a second fixing portion which are respectively detachably connected to the base assembly, wherein the first fixing portion is arranged at a first end of the heated bed assembly, and the second fixing portion is arranged at a second end of the heated bed assembly, and the first fixing portion and the second fixing portion jointly fix the printing platform assembly at the first position.

10. A 3D printer, characterized in that: The invention comprises a hot bed device as claimed in any one of claims 1 to 9.

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