3D printer extrusion add-on

Abstract

The utility model relates to 3D printer technical field discloses a 3D printer extrusion additional mechanism, including heat dissipation module, heating module, the heat dissipation module includes front radiator, front radiator, clamping frame, heat dissipation fin, pipe groove, inner block, first threaded hole and first limit screw rod. Adopt this structure, through the heat dissipation module to the connecting place of throat pipe and extrusion end carries out heat dissipation, can effectively avoid the heat accumulation to cause the material overheat to cause the material blocking of the overheat of consumable;At the same time, the heating module heats the throat pipe of one end position below the heat dissipation module, makes the temperature of throat pipe not less than the threshold value set, thereby can prevent the blockage caused by the excessive cooling of consumable;At the same time, adopt the installation mode of the first limit screw rod cooperation inner block and catch the throat pipe, and the dismounting is convenient, and the heat dissipation module is convenient for later maintenance or replacement.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer technology, specifically to an extrusion attachment mechanism for a 3D printer. Background Technology

[0002] In fused deposition modeling (FDM) 3D printers, the extrusion end is the core working component. It transfers molten filament to the extruder head through a throat, ultimately achieving layer-by-layer deposition of the filament for printing. The throat is usually directly connected to the bottom of the extrusion end's outlet. When the extrusion end is working, the heat generated is easily conducted to the connection between the throat and the extrusion end, causing additional heat buildup at that location. If the heat cannot be dissipated in time, the filament at the throat feed point and the extrusion point will overheat and soften again, or even carbonize and stick together, ultimately causing filament blockage and affecting printing efficiency and quality. Utility Model Content

[0003] This utility model mainly provides an additional extrusion mechanism for 3D printers, which solves the problem that when the extrusion end is working, the heat generated is easily conducted to the connection between the throat and the extrusion end, resulting in additional heat accumulation at this location, causing the consumable to overheat and soften again, or even carbonize and stick together, ultimately leading to material blockage.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An extrusion attachment mechanism for a 3D printer includes a heat dissipation module disposed outside a throat tube, and a heating module disposed below the heat dissipation module outside the throat tube. The heat dissipation module includes a front heat sink and a rear heat sink, and a clamping frame for holding the front and rear heat sinks. Heat dissipation fins are provided on the outer sides of the front and rear heat sinks, and grooves are formed on the inner sides of both the front and rear heat sinks. An inner abutment is provided within the groove of the front heat sink, and a first threaded hole is formed on the rear heat sink corresponding to the inner abutment. A first limiting screw is threaded into the first threaded hole. The front heat sink, rear heat sink, and heating module can all be made of thermally conductive materials, such as 6060 or 6063 aluminum alloy. In use, the heat generated at the extrusion end is conducted to the throat tube, and then through the front and rear heat sinks on the throat tube to the heat dissipation fins for rapid heat dissipation, effectively preventing heat accumulation. Simultaneously, to prevent excessive cooling of the filament in the throat tube, the heating module heats the throat tube to a set threshold range. This structure utilizes a heat dissipation module to cool the connection between the throat and the extrusion end, effectively preventing heat buildup that could lead to overheating and material blockage. Simultaneously, a heating module heats one end of the throat below the heat dissipation module, ensuring the throat temperature does not fall below a set threshold, thus preventing blockage caused by excessive cooling of the consumable. Furthermore, the installation method, which involves turning the first limit screw in conjunction with an inner stop block to hold the throat in place, facilitates easy disassembly and allows for convenient maintenance or replacement of the heat dissipation module.

[0005] Furthermore, the clamping frame includes a front frame and a rear frame. The front frame has a front slot for engaging with the surface of the front heat sink, and the rear frame has a rear slot for engaging with the surface of the heat sink. The front and rear frames are clamped and fixed together by connecting bolts. With this structure, after the front and rear heat sinks are fitted over the heat pipe, they are connected by the front and rear frames to ensure a close fit, allowing for easy assembly and disassembly of the corresponding structures. Moreover, the frame design does not affect the heat dissipation of the heat sink fins.

[0006] Furthermore, a filler gap is provided between the tube groove and the throat, and the filler gap is filled with thermally conductive silicone grease. This structure, with the addition of thermally conductive silicone grease, ensures that the space between the throat and the tube groove is filled, guaranteeing good heat dissipation.

[0007] Furthermore, a cooling fan assembly is detachably connected to the front or rear frame. The cooling fan assembly can be detachably connected to the front or rear frame using any existing detachable connection method. The cooling fan assembly can employ existing technology, such as the modular fan in a computer case. This structure ensures effective heat dissipation through the cooling fan assembly, and the detachable connection allows for individual assembly and disassembly.

[0008] Furthermore, the heating module includes a heating body with a through groove for fitting a throat tube, heating rod mounting slots on both sides of the heating body, and an outer limiting block detachably connected to restrict the heating rod. The heating body also has a second threaded hole communicating with the through groove, with a second limiting screw threaded into the second threaded hole. The outer limiting block can be locked to the heating body with a nut, and a positioning groove can be formed on the inner side of the outer limiting block. A positioning block that mates with the positioning groove can be provided on the heating body. This structure allows the heating rod to be installed into the heating rod mounting slot before the detachable connection of the outer limiting block on the side, thus limiting the heating rod and ensuring the heating effect. This method also allows for convenient installation and removal of the heating rod.

[0009] Beneficial effects: The heat dissipation module dissipates heat at the connection between the throat and the extrusion end, effectively preventing heat buildup that could lead to overheating and material blockage. Simultaneously, the heating module heats one end of the throat below the heat dissipation module, ensuring that the throat temperature does not fall below a set threshold, thus preventing blockage caused by excessive cooling of the consumables. Furthermore, the installation method, which uses the first limit screw to engage with the inner stop block to hold the throat in place, facilitates easy disassembly and allows for convenient maintenance or replacement of the heat dissipation module. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the heat dissipation module installation in this embodiment; Figure 2 This is a cross-sectional view of the heat dissipation module in this embodiment.

[0011] Reference numerals: Heat dissipation module 1, front heat sink 101, rear heat sink 102, clamping frame 103, front frame 1031, rear frame 1032, connecting bolt 1033, heat dissipation fins 104, inner abutment block 105, first threaded hole 106, heating module 2, heating body 201, heating rod mounting slot 202, outer limiting block 203, second limiting screw 204, cooling fan assembly 3. Detailed Implementation

[0012] The following will provide a more detailed description of the technical solution of the 3D printer extrusion attachment mechanism involved in this utility model, with reference to the embodiments.

[0013] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0014] As shown in Figures 1 and 2, a 3D printer extrusion attachment mechanism of this embodiment includes a heat dissipation module 1 disposed outside the throat tube, and a heating module 2 disposed below the heat dissipation module 1 outside the throat tube. The heat dissipation module 1 includes a front heat dissipation body 101 and a rear heat dissipation body 102, and a clamping frame 103 for clamping the front heat dissipation body 101 and the rear heat dissipation body 102. Heat dissipation fins 104 are provided on the outer side of the front heat dissipation body 101 and the rear heat dissipation body 102. A tube groove is opened on the inner side of both the front heat dissipation body 101 and the rear heat dissipation body 102. An inner abutment block 105 is provided in the tube groove of the front heat dissipation body 101. A first threaded hole 106 is opened on the rear heat dissipation body 102 corresponding to the inner abutment block 105. A first limiting screw is internally threaded into the first threaded hole 106. The clamping frame 103 includes a front frame 1031 and a rear frame 1032. The front frame 1031 has a front slot for engaging with the surface of the front heat sink 101, and the rear frame 1032 has a rear slot for engaging with the surface of the rear heat sink 102. The front frame 1031 and the rear frame 1032 are clamped and fixed by connecting bolts 1033. A filler gap is provided between the pipe groove and the throat pipe, and the filler gap is filled with thermally conductive silicone grease. A cooling fan assembly 3 is detachably connected to the front frame 1031 or the rear frame 1032. The heating module 2 includes a heating body 201, which has a through groove for fitting a throat tube. Heating rod mounting grooves 202 are located on both sides of the heating body 201, and an outer limiting block 203 is detachably connected to limit the heating rod. A second threaded hole communicating with the through groove is provided on the heating body 201, and a second limiting screw 204 is threaded into the second threaded hole. In use, the heat generated at the extrusion end is conducted to the throat tube, and then through the front heat sink 101 and rear heat sink 102 on the throat tube to the heat dissipation fins 104. The heat dissipation fins 104 quickly dissipate heat, effectively preventing heat accumulation. Simultaneously, to prevent excessive cooling of the consumables in the throat tube, the heating module 2 heats the throat tube to a set threshold range. This structure effectively prevents heat buildup and material blockage caused by overheating of the consumables by dissipating heat at the connection between the throat and the extrusion end through the heat dissipation module 1. At the same time, the heating module 2 heats one end of the throat below the heat dissipation module 1, ensuring that the temperature of the throat does not fall below the set threshold, thereby preventing blockage caused by excessive cooling of the consumables. In addition, the installation method of tightening the first limit screw in conjunction with the inner stop block 105 to lock the throat makes disassembly convenient and facilitates later maintenance or replacement of the heat dissipation module 1.

[0015] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge or conventional technology in the field. Therefore, this utility model will not explain the control method and circuit connection in detail.

[0016] 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. An extrusion attachment mechanism for a 3D printer, characterized in that: The device includes a heat dissipation module disposed outside the throat, and a heating module disposed below the heat dissipation module outside the throat. The heat dissipation module includes a front heat dissipation body and a rear heat dissipation body, and a clamping frame for holding the front heat dissipation body and the rear heat dissipation body. Heat dissipation fins are provided on the outer sides of the front heat dissipation body and the inner sides of the front heat dissipation body and the rear heat dissipation body has a first threaded hole corresponding to the inner abutment block, and a first limiting screw is threaded into the first threaded hole.

2. The 3D printer extrusion attachment mechanism according to claim 1, characterized in that: The clamping frame includes a front frame and a rear frame. The front frame has a front slot that engages with the surface of the front heat sink, and the rear frame has a rear slot that engages with the surface of the heat sink. The front frame and the rear frame are clamped and fixed by connecting bolts.

3. The 3D printer extrusion attachment mechanism according to claim 2, characterized in that: A packing gap is provided between the tube groove and the throat, and the packing gap is filled with thermally conductive silicone grease.

4. The 3D printer extrusion attachment mechanism according to claim 2, characterized in that: A cooling fan assembly is detachably connected to the front or rear frame.

5. The 3D printer extrusion attachment mechanism according to claim 1, characterized in that: The heating module includes a heating body, which has a through groove for fitting a throat tube, heating rod mounting grooves on both sides of the heating body, and an outer limiting block detachably connected to limit the heating rod; the heating body has a second threaded hole communicating with the through groove, and a second limiting screw is internally threaded into the second threaded hole.

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