Thermal insulation sleeve device for 3D printing hot end heating

Abstract

The utility model discloses a hot end heating insulation sleeve device for 3D printing, which belongs to the technical field of 3D printing and comprises a mounting disc, a plurality of mounting bolts are arranged on the mounting disc in a penetrating manner, two protective covers are arranged on the lower surface of the mounting disc, one protective cover is fixedly mounted on the lower surface of the mounting disc, and the other protective cover is fixedly mounted on the lower surface of the mounting disc. The other protective cover is movably arranged on the lower surface of the mounting disc, the two protective covers are detachably connected, and a plurality of heating plates and an isolation sheath are fixedly mounted on the inner wall of each protective cover; the mounting disc is arranged to be used in cooperation with the mounting bolts and the two protective covers, the mounting disc can be mounted at the mounting position of the nozzle, the nozzle is wrapped with the protective covers, heat conduction is conducted through the heating plate and the heat conduction copper plate, reheating of the nozzle is achieved, and therefore it is guaranteed that consumables can be stably melted; the heat preservation effect can be achieved, and heat energy loss is effectively prevented.

Description

Technical Field

[0001] This utility model belongs to the field of 3D printing technology, specifically relating to a device for heating and insulating the hot end of a 3D printing sleeve. Background Technology

[0002] 3D printing, also known as additive manufacturing, is a technology that manufactures solid parts by adding materials layer by layer based on three-dimensional CAD data. The history of 3D printing technology is one of continuous progress and expansion. From early rapid prototyping technology to its widespread application today, 3D printing technology is used in design and manufacturing fields such as jewelry design, footwear design and manufacturing, industrial design, architectural design, engineering design and construction, and automotive design and manufacturing, as well as in medical fields such as aerospace and dentistry.

[0003] The 3D printing process requires the use of a hot-end printing device, which is a key component of a 3D printer. It is mainly responsible for heating and melting the filament so that it can be extruded and deposited on the build platform to form a three-dimensional object.

[0004] Existing 3D printing hot ends lack an effective heating and insulation sleeve mechanism during use. This means that during operation, heat from the printing hot end is not only conducted to the inside of the filament, causing it to melt, but also to the outside space, resulting in heat loss. Therefore, a larger amount of heat energy is needed to ensure the stable melting of the filament. To address this, we propose a heating and insulation sleeve device for 3D printing hot ends. Utility Model Content

[0005] The purpose of this invention is to provide a heating and insulation sleeve device for the hot end of 3D printing, in order to solve the problem mentioned in the background art that the existing 3D printing hot end lacks an effective heating and insulation sleeve mechanism during use. That is to say, during the operation of the printing hot end, the heat will not only be conducted to the inside of the consumable and melt it, but also be conducted to the outside space, which will cause heat loss. Therefore, a greater amount of heat energy is needed to ensure the stable melting of the consumable.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heating and insulation sleeve device for the hot end of 3D printing, comprising a mounting plate, on which a plurality of mounting bolts are passed; two protective covers are provided on the lower surface of the mounting plate, one of which is fixedly mounted on the lower surface of the mounting plate, and the other is movably mounted on the lower surface of the mounting plate, the two protective covers being detachably connected; a plurality of heating plates and an insulating sleeve are fixedly mounted on the inner wall of the protective cover; a plurality of heat-conducting copper plates are inserted into the insulating sleeve, one end of each heat-conducting copper plate being connected to the heating plate. The surfaces are fitted together. One of the protective covers has an assembly plate 1 fixedly installed on both sides of its outer surface, and the other protective cover has an assembly plate 2 fixedly installed on both sides of its outer surface. A clamping plate is fixedly installed on one side of the assembly plate 2 facing the same side as the assembly plate 1. The assembly plate 1 has a clamping hole. The clamping plate is clamped to the inner wall of the clamping hole on the same side. An insulation sleeve is installed on the outer surface of the protective cover. An annular insertion hole is opened on the mounting plate. A semi-circular insertion hole is opened at the bottom of the protective cover. Protective rings can be detachably installed inside the annular insertion hole and the two semi-circular insertion holes.

[0007] Using the above solution, the mounting plate is installed at the nozzle mounting position using mounting bolts and two protective covers. The protective covers wrap around the nozzle, and heat conduction is achieved through the heating plate and heat-conducting copper plate to reheat the nozzle, thus ensuring stable melting of the consumables. The use of an insulation sleeve provides insulation, effectively preventing heat loss. The two protective covers, one fixed and one movable, are easily assembled using assembly plates one and two, along with a clamping plate. Subsequent maintenance of the internal nozzle only requires disassembling the movable protective cover, eliminating the need to disassemble the mounting plate. This simplifies operation. Furthermore, the protective ring can be selected and replaced according to the nozzle's diameter, improving its versatility.

[0008] In a preferred embodiment, a support pad ring is attached to the upper surface of the mounting plate, and a through hole is provided on the support pad ring at the position opposite to the mounting bolt for the mounting bolt to pass through.

[0009] By adopting the above solution, by setting support pads on the surface of the mounting plate, the support pads can provide a protective effect during installation, preventing surface damage to the mounting plate from squeezing during the installation process.

[0010] In a preferred embodiment, a plurality of alignment guide posts are fixedly installed on the upper surface of the mounting plate, and a plurality of alignment guide holes are opened on the support pad ring, with the alignment guide posts inserted into the alignment guide holes at corresponding positions.

[0011] By using the above solution, the alignment guide post can be inserted into the alignment guide hole to limit the support pad ring, avoid misalignment during assembly between the support pad ring and the mounting plate, and ensure that the mounting bolts can pass smoothly through the through hole.

[0012] In a preferred embodiment, a fixing block is fixedly installed on the inner wall of both the annular insertion hole and the inner wall of the semi-circular insertion hole. A fixing rod is fixedly installed on the fixing block. The outer surface of the fixing rod has threads and a fixing nut is threaded onto it. A circular hole is provided on the protective ring for the fixing rod to pass through. The protective ring is fitted between the fixing block and the fixing nut.

[0013] By using the above solution, the use of a fixing block and a fixing screw in conjunction with a fixing nut allows for convenient disassembly and assembly of the protective ring. The threaded compression locking facilitates operation and makes it easy to replace the appropriate protective ring according to different nozzle diameters.

[0014] In a preferred embodiment, the outer surface of the protective ring is provided with a sealing groove, and a high-temperature resistant sealing ring is embedded in the sealing groove. The high-temperature resistant sealing ring at the upper position is attached to the inner wall of the annular insertion hole, and the high-temperature resistant sealing ring at the lower position is attached to the inner wall of the semi-circular insertion hole.

[0015] By adopting the above solution and using the sealing groove in conjunction with the high-temperature resistant sealing ring, it is possible to ensure good sealing between the protective ring and the protective cover and the mounting plate during installation, thus preventing heat loss to the outside.

[0016] In one preferred embodiment, a plurality of positioning rods are slidably mounted on the assembly plate, one end of each positioning rod is fixedly mounted to the same linkage operation plate, a plurality of positioning slots are provided on the side of the card plate, and the other end of each positioning rod extends into the card hole and is inserted into the inner wall of the positioning slot.

[0017] Using the above scheme, the positioning rod is used in conjunction with the positioning groove. After the card plate is inserted into the card hole, the positioning rod can be inserted into the positioning groove to lock the card plate, thereby completing the locking between assembly plate one and assembly plate two, and thus achieving the locking between the two protective covers.

[0018] In a preferred embodiment, a cavity is provided on the assembly plate opposite the positioning rod, and a spring is fixedly installed on the inner wall of the cavity. The spring is sleeved on the outside of the positioning rod, and a blocking ring is fixedly installed on one end of the spring. The blocking ring is fixedly installed on the outer surface of the positioning rod.

[0019] Using the above solution, the blocking ring and spring work together. The blocking ring prevents the positioning rod from sliding off the assembly plate, thus providing a limiting effect. When the positioning rod slides off the locking hole, the spring is squeezed and locked by the limiting ring. At this time, after the locking plate is inserted into the locking hole, the spring force can be used to drive the positioning rod to quickly reset and insert into the positioning groove, realizing a convenient locking operation.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This 3D printing hot-end heating and insulation sleeve device uses a mounting plate with mounting bolts and two protective covers. The mounting plate can be installed at the nozzle installation position, and the protective covers can be wrapped around the nozzle. Heat is conducted through the heating plate and heat-conducting copper plate to reheat the nozzle, thereby ensuring that the consumables can melt stably. When used with the insulation sleeve, it can play a heat preservation role and effectively prevent heat loss.

[0022] This 3D printing hot-end heating insulation sleeve device features two protective covers, one fixed and one movable. The two protective covers are easily assembled using assembly plates one and two, as well as a clamping plate. For subsequent maintenance of the internal nozzles, only the movable protective cover needs to be removed and installed, eliminating the need to disassemble the mounting plate. This makes the operation convenient, and the protective ring can be adapted to the nozzle's diameter and size, improving its versatility. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0025] Figure 3 This is a schematic diagram of the structure of the mounting plate, support pad ring, and protective ring of this utility model after an explosion.

[0026] Figure 4 This is a schematic diagram of the structure of the two protective shields of this utility model exploding;

[0027] Figure 5 This is a cross-sectional structural diagram of the assembly plate of this utility model.

[0028] In the diagram: 1. Mounting plate; 2. Mounting bolt; 3. Protective cover; 4. Protective ring; 5. Heating plate; 6. Insulation sleeve; 7. Heat-conducting copper plate; 8. Assembly plate one; 9. Assembly plate two; 10. Clamping plate; 11. Insulation sleeve; 12. Support pad ring; 13. Alignment guide post; 14. Fixing block; 15. Fixing rod; 16. Fixing nut; 17. High-temperature resistant sealing ring; 18. Positioning rod; 19. Linkage operation plate; 20. Blocking ring; 21. Spring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-5 This utility model provides a heating and insulation sleeve device for the hot end of 3D printing, including a mounting plate 1. Several mounting bolts 2 pass through the mounting plate 1. Two protective covers 3 are provided on the lower surface of the mounting plate 1. One protective cover 3 is fixedly installed on the lower surface of the mounting plate 1, and the other protective cover 3 is movably disposed on the lower surface of the mounting plate 1. The two protective covers 3 are detachably connected. Several heating plates 5 and an insulating sleeve 6 are fixedly installed on the inner wall of the protective cover 3. Several heat-conducting copper plates 7 are inserted into the insulating sleeve 6, with one end of each heat-conducting copper plate 7 attached to the surface of the heating plate 5. One of the protective covers 3 has an assembly plate 8 fixedly installed on both sides of its outer surface, and another protective cover 3 has an assembly plate 9 fixedly installed on both sides of its outer surface. A clamping plate 10 is fixedly installed on one side of the assembly plate 8 facing the same side. The assembly plate 8 has a clamping hole, and the clamping plate 10 is clamped to the inner wall of the clamping hole on the same side. The outer surface of the protective cover 3 is fitted with an insulation sleeve 11. The mounting plate 1 has an annular insertion hole, and the bottom of the protective cover 3 has a semi-circular insertion hole. Protective rings 4 can be detachably installed inside the annular insertion hole and the two semi-circular insertion holes.

[0031] By using the mounting plate 1 with mounting bolts 2 and two protective covers 3, the mounting plate 1 can be installed at the nozzle mounting position. The protective covers 3 wrap around the nozzle, and heat conduction is achieved through the heating plate 5 and the heat-conducting copper plate 7 to reheat the nozzle, thereby ensuring that the consumables can melt stably. In addition, the use of the heat insulation sleeve 11 can provide a heat preservation effect and effectively prevent heat loss. By setting one fixed and one movable protective cover 3, the two protective covers 3 can be easily assembled by the assembly plate 1 8, the assembly plate 2 9 and the clamping plate 10. When maintaining the internal nozzle, only the movable protective cover 3 needs to be removed and installed, without removing the mounting plate 1. The operation is convenient, and the protective ring 4 can be selected and replaced according to the diameter of the nozzle, improving the versatility of use.

[0032] A support pad ring 12 is attached to the upper surface of the mounting plate 1. The support pad ring 12 has a through hole at the position of the mounting bolt 2 for the mounting bolt 2 to pass through. By setting the support pad ring 12 on the surface of the mounting plate 1, the support pad ring 12 can play a protective role during the installation of the mounting plate 1, preventing surface compression damage to the mounting plate 1 during the installation process.

[0033] Several alignment guide posts 13 are fixedly installed on the upper surface of the mounting plate 1. Several alignment guide holes are opened on the support pad ring 12. The alignment guide posts 13 are inserted into the alignment guide holes at the corresponding positions. By inserting the alignment guide posts 13 into the alignment guide holes, the support pad ring 12 can be limited to avoid deviation when the support pad ring 12 is assembled with the mounting plate 1, and ensure that the mounting bolts 2 can pass smoothly through the through holes.

[0034] Fixing blocks 14 are fixedly installed on the inner walls of both the annular insertion hole and the semi-circular insertion hole. Fixing rods 15 are fixedly installed on the fixing blocks 14. The outer surface of the fixing rods 15 has threads and a fixing nut 16 is threaded on them. A circular hole is opened on the protective ring 4 for the fixing rods 15 to pass through. The protective ring 4 is fitted between the fixing blocks 14 and the fixing nut 16. By using the fixing blocks 14 and the fixing screw in conjunction with the fixing nut 16, the protective ring 4 can be easily disassembled and assembled. The threaded compression locking makes operation convenient and facilitates the replacement of the appropriate protective ring 4 according to different nozzle diameter specifications.

[0035] The outer surface of the protective ring 4 is provided with a sealing groove, and a high-temperature resistant sealing ring 17 is embedded in the sealing groove. The high-temperature resistant sealing ring 17 at the upper position is attached to the inner wall of the annular insertion hole, and the high-temperature resistant sealing ring 17 at the lower position is attached to the inner wall of the semi-circular insertion hole. By using the sealing groove in conjunction with the high-temperature resistant sealing ring 17, it can ensure that the protective ring 4 has good sealing performance with the protective cover 3 and the mounting plate 1 during installation, and prevent heat energy from being lost to the outside.

[0036] Several positioning rods 18 are slidably mounted on the assembly plate 8. One end of each positioning rod 18 is fixedly mounted with the same linkage operation plate 19. Several positioning slots are opened on the side of the clamping plate 10. The other end of the positioning rod 18 extends into the clamping hole and is inserted into the inner wall of the positioning slot. The positioning rod 18 is used in conjunction with the positioning slot. When the clamping plate 10 is inserted into the clamping hole, the positioning rod 18 can be inserted into the positioning slot to lock the clamping plate 10, thereby completing the locking between the assembly plate 8 and the assembly plate 9, and thus achieving the locking between the two protective covers 3.

[0037] A cavity is provided on the assembly plate 8 directly opposite the positioning rod 18, and a spring 21 is fixedly installed on the inner wall of the cavity. The spring 21 is sleeved on the outside of the positioning rod 18, and a blocking ring 20 is fixedly installed on one end of the spring 21. The blocking ring 20 is fixedly installed on the outer surface of the positioning rod 18. The blocking ring 20 and the spring 21 work together to prevent the positioning rod 18 from sliding out of the assembly plate 8, thus providing a limiting effect. When the positioning rod 18 slides out of the locking hole, the spring 21 will be squeezed and locked by the limiting ring. At this time, after the locking plate 10 is inserted into the locking hole, the elastic force of the spring 21 can be used to drive the positioning rod 18 to quickly reset and insert into the positioning groove, realizing a convenient locking operation.

[0038] In use, first place the support pad ring 12 on the mounting plate 1 and align it using the alignment guide post 13 and alignment guide hole. Then, use the mounting bolt 2 to pass through the mounting plate 1 and the support pad ring 12 to install the mounting plate 1 at the installation position of the printing nozzle. The printing nozzle passes through the protective ring 4 inside the mounting plate 1 and through the inside of the two protective covers 3. During printing, the consumable is ejected through the nozzle, and at the same time, the heating plate 5 is activated to heat it. The heat energy is conducted to the space where the nozzle is located through the heat-conducting copper plate 7 to reheat the consumable ejected from the nozzle. The heat insulation sleeve 11 can prevent heat loss. When the nozzle needs maintenance, pull the linkage operation plate 19. The linkage operation plate 19 drives the positioning rod 18 to move, and the positioning rod 18 disengages from the positioning groove. At this time, the locking plate 10 is unlocked, and the movable protective cover 3 is unlocked, so the movable protective cover 3 can be removed. After maintenance, the movable protective cover 3 is assembled. During assembly, the locking plate 10 on the assembly plate 2 9 is inserted into the locking hole on the assembly plate 1 8. At the same time, the linkage operation plate 19 is pulled to drive the positioning rod 18 out of the locking hole. At this time, the limit ring moves synchronously with the positioning rod 18 and squeezes the spring 21 to deform. When the locking plate 10 is fully inserted into the locking hole, the linkage operation plate 19 is released. The elastic force of the spring 21 drives the positioning rod 18 to reset and insert into the positioning groove, realizing the installation of the protective cover 3. At the same time, when using it, the appropriate inner diameter of the protective ring 4 can be selected according to the thickness specification of the nozzle. The protective ring 4 can be disassembled and assembled by turning the fixing nut 16.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for heating and insulating the hot end of a 3D printed jacket, characterized in that: The system includes a mounting plate (1) with several mounting bolts (2) passing through it. Two protective covers (3) are provided on the lower surface of the mounting plate (1). One protective cover (3) is fixedly installed on the lower surface of the mounting plate (1), and the other protective cover (3) is movably disposed on the lower surface of the mounting plate (1). The two protective covers (3) are detachably connected. Several heating plates (5) and an insulating sleeve (6) are fixedly installed on the inner wall of the protective cover (3). Several heat-conducting copper plates (7) are inserted into the insulating sleeve (6). One end of each heat-conducting copper plate (7) is attached to the surface of the heating plate (5). (3) is fixedly installed on both sides of the outer surface of the protective cover (3), and is fixedly installed on both sides of the outer surface of the other protective cover (3). The assembly plate (9) is fixedly installed on one side of the assembly plate (8) facing the same side. The assembly plate (8) is provided with a carding hole. The carding plate (10) is locked in the inner wall of the carding hole at the same side. The outer surface of the protective cover (3) is provided with a heat insulation sleeve (11). The mounting plate (1) is provided with an annular insertion hole. The bottom of the protective cover (3) is provided with a semi-circular insertion hole. The annular insertion hole and the two semi-circular insertion holes can be detachably installed with protective rings (4).

2. The device for heating and insulating the hot end of a 3D printing sleeve according to claim 1, characterized in that: The upper surface of the mounting plate (1) is fitted with a support pad ring (12), and the support pad ring (12) has a through hole for the mounting bolt (2) to pass through at the position opposite to the mounting bolt (2).

3. The device for heating and insulating the hot end of a 3D printing sleeve according to claim 2, characterized in that: The upper surface of the mounting plate (1) is fixedly equipped with several alignment guide posts (13), and the support pad ring (12) is provided with several alignment guide holes. The alignment guide posts (13) are inserted into the alignment guide holes at the corresponding positions.

4. The device for heating and insulating the hot end of a 3D printing sleeve according to claim 1, characterized in that: The inner wall of the annular insertion hole and the inner wall of the semi-circular insertion hole are both fixedly installed with fixing blocks (14). A fixing rod (15) is fixedly installed on the fixing block (14). The outer surface of the fixing rod (15) has threads and a fixing nut (16) is threaded on it. A circular hole is opened on the protective ring (4) for the fixing rod (15) to pass through. The protective ring (4) is fitted between the fixing block (14) and the fixing nut (16).

5. The device for heating and insulating the hot end of a 3D printing sleeve according to claim 1, characterized in that: The outer surface of the protective ring (4) is provided with a sealing groove, and a high-temperature resistant sealing ring (17) is embedded in the sealing groove. The high-temperature resistant sealing ring (17) at the upper position is attached to the inner wall of the annular insertion hole, and the high-temperature resistant sealing ring (17) at the lower position is attached to the inner wall of the semi-circular insertion hole.

6. The device for heating and insulating the hot end of a 3D printing sleeve according to claim 1, characterized in that: Several positioning rods (18) are slidably installed on the assembly plate (8). One end of each positioning rod (18) is fixedly installed with the same linkage operation plate (19). Several positioning slots are opened on the side of the card plate (10). The other end of the positioning rod (18) extends into the card hole and is inserted into the inner wall of the positioning slot.

7. The device for heating and insulating the hot end of a 3D printing sleeve according to claim 6, characterized in that: A cavity is provided on the assembly plate (8) at the position opposite to the positioning rod (18), and a spring (21) is fixedly installed on the inner wall of the cavity. The spring (21) is sleeved on the outside of the positioning rod (18), and a blocking ring (20) is fixedly installed on one end of the spring (21). The blocking ring (20) is fixedly installed on the outer surface of the positioning rod (18).

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