A heating assembly for a printhead

Abstract

This invention discloses a heating assembly for a printhead, comprising: a support, and a feed heating cavity assembly, a spherical heating cavity assembly, and a discharge tube assembly disposed on the support and distributed in a top-middle-bottom pattern. The spherical heating cavity assembly, located in the middle, forms a spherical heating cavity between the feed end and the discharge end of the printhead. The spherical heating cavity assembly consists of a sphere, an outer casing disposed around the outer periphery of the sphere, and a first annular heating tube and a second annular heating tube. The first annular heating tube and the second annular heating tube are respectively disposed on the opposite surfaces of the sphere and the outer casing, forming a heating cavity between the sphere and the outer casing. This invention, through the position and structural characteristics of the spherical heating cavity assembly, forms a spherical heating cavity between the feed end and the discharge end of the printhead. Furthermore, heating structures are provided both inside and outside the spherical heating cavity, thereby improving the heating effect of the consumables while ensuring uniform heating of the consumables.

Description

Technical Field

[0001] This invention relates to the field of printing technology, specifically to a heating assembly for a printhead. Background Technology

[0002] FDM (Fused Deposition Modeling) printing technology boasts advantages such as ease of operation, flexible customization, and high printing speed, making it the most widely used 3D printing technology currently. In the extrusion process, industrial-grade FDM printheads must first ensure the material is completely melted. However, existing printhead heating structures often employ simple heating wires or rods, which suffer from poor heating efficiency, incomplete filament heating, and rapid temperature loss. Therefore, this paper proposes a new heating component for the printhead. Summary of the Invention

[0003] The purpose of this invention is to provide a heating assembly for a printhead. By utilizing the position and structural characteristics of the spherical heating cavity assembly, a spherical heating cavity can be formed between the feed end and the output end of the printhead, resulting in good heat preservation. Furthermore, heating structures are provided both inside and outside the spherical heating cavity to improve the heating effect of the consumables while ensuring uniform heating of the consumables.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a heating assembly for a printhead, comprising: a support, a feed heating chamber assembly, a spherical heating chamber assembly, and a discharge tube assembly disposed on the support and distributed in an upper, middle, and lower manner, wherein the spherical heating chamber assembly disposed in the middle can form a spherical heating cavity between the feed end and the discharge end of the printhead; the spherical heating chamber assembly consists of a sphere, an outer casing disposed on the outer periphery of the sphere, and a first annular heating tube and a second annular heating tube, wherein the first annular heating tube and the second annular heating tube are respectively disposed on the opposite surfaces of the sphere and the outer casing, and the sphere and the outer casing form a heating cavity for uniformly heating and melting the wire.

[0005] Preferably, the outer casing includes an upper casing fixed to the middle of the bracket, and a lower casing component adapted and engaged with the upper casing. The lower casing component includes an electric telescopic rod fixed to the bottom of the bracket, and a mounting frame fixed to the telescopic end of the electric telescopic rod. The mounting frame is connected to two pairs of rotatable mounting rings via mounting posts at its opposite ends. Each pair of mounting rings has two rings, with the two mounting rings near the inner side fixed to one of the lower casings and the two mounting rings near the outer side fixed to the other lower casing. It also includes an engagement drive assembly. When the electric telescopic rod extends, the engagement drive assembly enables the two lower casings to come together and move upward to engage with the upper casing. When the electric telescopic rod retracts, it enables the two lower casings to disengage from the upper casing and expand after disengagement.

[0006] Preferably, the meshing drive assembly includes a support rod and long racks fixed at both ends of the support rod; it also includes arc-shaped racks respectively disposed on the outer walls of the two lower covers, wherein the arc-shaped racks mesh with their corresponding long racks; the connecting block of the support rod near the end of the bracket is slidably mounted inside a groove opened in the side wall of the bracket and longitudinally connected to the top of the groove by a first spring.

[0007] Preferably, the discharge pipe assembly includes a branch pipe fixed to the bottom of each of the lower covers and communicating with the lower covers, and a flexible hose disposed at the bottom ends of the two branch pipes; it also includes a connecting pipe communicating with the bottom ends of the flexible hoses, and the support rod is fixed to the connecting pipe.

[0008] Preferably, the feeding heating chamber assembly is composed of a stirring chamber assembly and a spiral conveying chamber assembly; wherein the spiral conveying chamber assembly is placed between the stirring chamber assembly and the spherical heating chamber assembly and is used for communication between the two; the stirring chamber assembly includes a housing fixed to the upper part of the support, and a feeding chamber rotatably connected to the center of the top of the housing, and the feeding chamber is composed of conical cavities and a transmission cavity distributed inside and outside the housing; the conical cavity has a hollow structure, and a transmission rod is fixed at its bottom; it also includes a column fixed annularly to the upper wall of the transmission rod, and a heating ring fixed to the outer end of each column, which is provided with two second springs and a steel ball inside, the steel ball is located at the opposite ends of the two second springs, and the opposite ends of the two second springs are connected to the opposite surfaces of the heating ring.

[0009] Preferably, the lower wall of the transmission rod is also fixed with a cross and a scraper fixed in a ring at the outer end of the cross, and several scrapers are in contact with the inner wall of the housing.

[0010] Preferably, the top of the bracket is further provided with a belt drive assembly, which includes a motor disposed on the top of the bracket, a drive wheel fixed to the output end of the motor, and a drive ring fixed to the outer periphery of the feed chamber. A drive belt is sleeved between the drive ring and the drive wheel.

[0011] Preferably, a rotary sealing plug is provided at the connection between the feed chamber and the shell.

[0012] Preferably, the spiral conveying cavity assembly includes a sleeve fixed between the housing and the upper cover for communication between the two, and a spiral conveying roller fixed between the transmission rod and the ball. When the belt drive assembly is running, the spiral conveying roller rotates to convey the wire.

[0013] Preferably, a heating strip is embedded in the inner wall of the sleeve in a ring shape.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The present invention uses a spherical heating cavity assembly in the middle of the support to form a spherical heating cavity between the feed end and the output end of the print head for uniform heating and melting of the wire.

[0016] 2. In another embodiment of the present invention, the feeding chamber is rotatably installed with the housing. The column, heating ring, and second spring and steel ball inside the transmission rod fixed at the bottom achieve a stirring effect when the feeding chamber rotates. At the same time, the steel ball further improves the melting and mixing effect of the wire by vibration under the action of the second spring on both sides. Here, the heating ring is used for the pre-melting of the wire.

[0017] 3. As another embodiment of the present invention, the inner wall of the sleeve in which the spiral conveying cavity assembly is located has an annularly embedded heating strip to further realize the solidification process after the wire is preheated, while the spherical heating cavity assembly below realizes the thorough and uniform heating of the wire. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the side view structure;

[0020] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of AA;

[0021] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of BB;

[0022] Figure 5 for Figure 1 A partial disassembly diagram;

[0023] Figure 6 for Figure 5 Another perspective of the three-dimensional structure diagram;

[0024] Figure 7 for Figure 5 A front view structural diagram;

[0025] Figure 8 This is an enlarged structural schematic diagram of the stirring chamber assembly.

[0026] In the diagram: 1. Support; 2. Spherical heating chamber assembly; 201. Sphere; 202. First annular heating tube; 203. Upper cover; 204. Lower cover component; 2041. Electric telescopic rod; 2042. Mounting frame; 2043. Mounting ring; 2044. Lower cover; 205. Second annular heating tube; 3. Stirring chamber assembly; 301. Feeding chamber; 302. Shell; 303. Transmission rod; 304. Column; 305. Heating coil; 306. Second spring; 307. Steel ball; 308. Ten 309. Scraper; 4. Spiral conveyor chamber assembly; 401. Sleeve; 402. Spiral conveyor roller; 403. Heating strip; 5. Discharge pipe assembly; 501. Branch pipe; 502. Hose; 503. Connecting pipe; 6. Engaging drive assembly; 601. Support rod; 602. Connecting block; 603. First spring; 604. Arc rack; 605. Long rack; 7. Belt drive assembly; 701. Motor; 702. Drive wheel; 703. Drive ring; 704. Drive belt; 8. Rotary sealing plug. Detailed Implementation

[0027] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. The various embodiments of this invention are described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] Please see Figures 1 to 8 The present invention preferably provides a technical solution: a heating assembly for a printhead, comprising: a support 1, a feeding heating chamber assembly, a spherical heating chamber assembly 2, and a discharge tube assembly 5 disposed on the support 1 and distributed in an upper, middle, and lower manner. The spherical heating chamber assembly 2, located in the middle, can form a spherical heating cavity between the feeding end and the discharge end of the printhead. The spherical heating chamber assembly 2 consists of a sphere 201, an outer casing disposed around the sphere 201, and a first annular heating tube 202 and a second annular heating tube 205. The first annular heating tube 202 and the second annular heating tube 205 are respectively disposed on the opposite surfaces of the sphere 201 and the outer casing, forming a heating cavity between the sphere 201 and the outer casing for uniform heating and melting of the wire.

[0030] In this embodiment, the feeding heating chamber assembly, the spherical heating chamber assembly 2, and the discharge pipe assembly 5 are distributed in an upper, middle, and lower manner, combined with... Figure 1 , 4As shown in Figure 5, the spherical heating cavity assembly 2 in the middle can form a spherical heating cavity between the feed end (feed heating cavity assembly) and the discharge end (discharge tube assembly 5) of the printhead, which is used for uniform heating and melting of the wire. The spherical heating cavity assembly 2 in this application consists of a sphere 201, an outer shell placed on the outer periphery of the sphere 201, and a first annular heating tube 202 and a second annular heating tube 205. The first annular heating tube 202 and the second annular heating tube 205 are respectively arranged on the opposite surfaces of the sphere 201 and the outer shell, thereby forming a heating cavity with heating effect both inside and outside between the sphere 201 and the outer shell. This design not only improves the uniformity of heating of consumables, but also ensures heating efficiency.

[0031] Furthermore, the outer casing includes an upper casing 203 fixed to the middle of the bracket 1, and a lower casing component 204 adapted to and engaged with the upper casing 203. The lower casing component 204 includes an electric telescopic rod 2041 fixed to the bottom of the bracket 1, and a mounting frame 2042 fixed to the telescopic end of the electric telescopic rod 2041. The mounting frame 2042 is connected to two pairs of rotatable mounting rings 2043 via mounting posts at its opposite ends. Each pair of mounting rings 2043 has two rings. The two mounting rings 2043 near the inner side are fixed to one of the lower casings 2044, and the two mounting rings 2043 near the outer side are fixed to the other lower casing 2044. It also includes an engagement drive assembly 6, which engages when the electric telescopic rod 2041 extends. The engagement drive assembly 6 enables the two lower covers 2044 to close together and move upward to dock with the upper cover 203. When the electric telescopic rod 2041 retracts, it enables the two lower covers 2044 to disengage from the upper cover 203 and the subsequent expansion process. Further, the engagement drive assembly 6 includes a support rod 601 and long racks 605 fixed at both ends of the support rod 601. It also includes arc-shaped racks 604 respectively disposed on the outer walls of the two lower covers 2044, wherein the arc-shaped racks 604 mesh with their corresponding long racks 605. The connecting block 602 near the end of the support rod 601 is slidably installed inside the groove opened on the side wall of the support 1 and longitudinally connected to the top of the groove by a first spring 603.

[0032] Here, the upper cover 203 and the lower cover component 204 can be combined to form the entire spherical cover around the sphere 201. In this application, the upper cover 203 and the lower cover component 204 have opening and closing characteristics to clean the residue of molten wire inside the spherical heating cavity.

[0033] Combination Figure 1 , 4As shown in Figures 5, 6, and 7, the mounting frame 2042 is fixed to the telescopic end of the electric telescopic rod 2041. Its opposite ends are connected to two pairs of rotatable mounting rings 2043 via mounting posts. Each pair of mounting rings 2043 has two rings; the two innermost mounting rings 2043 are fixed to one of the lower covers 2044, and the two outermost mounting rings 2043 are fixed to the other lower cover 2044. Figure 6 As shown, the drive component provided here enables the two lower covers 2044 to move longitudinally and move together with or separate from the upper cover 203, while also enabling the merging and separation of the two lower covers 2044.

[0034] Specifically, in combination Figure 1 As shown, when the electric telescopic rod 2041 extends, it drives the mounting frame 2042, mounting ring 2043, and lower cover 2044 at its end to move upward as a whole. Since the arc-shaped toothed rack 604 on the outer wall of the lower cover 2044 meshes with the long toothed rack 605 which is fixed at this time, the two lower covers 2044 can be deflected downward relative to each other through the meshing characteristics of the arc-shaped toothed rack 604 and the long toothed rack 605, thus realizing the downward deflection of the two lower covers 2044. The two lower covers 2044 merge to form a semicircle. As the electric telescopic rod 2041 extends further, the long rack 605 and the arc rack 604 act as a snap fastener. The two long racks 605 can move upward under the action of their corresponding arc racks 604, which in turn causes the support rod 601 and the connecting block 602 to move upward, the connecting block 602 to compress, until the two lower covers 2044 and the upper cover 203 close together to form a complete circle.

[0035] When the electric telescopic pole 2041 is in Figure 1 When the state shifts downwards, the two lower covers 2044 can also move downwards, and simultaneously the connecting block 602, support rod 601, and long rack 605 move downwards along with the lower covers 2044. The reason is that the first spring 603... Figure 1 In the compressed state, when it loses pressure, its reset force causes the connecting block 602, support rod 601, and long rack 605 to move downward with the lower cover 2044 until they move to the initial point of the upward movement of the connecting block 602, that is, the bottom of the slide groove. Then the electric telescopic rod 2041 moves further downward. At this time, the support rod 601, connecting block 602, and long rack 605 remain stationary, while the two lower covers 2044 can achieve the deflection and separation process in opposite directions under the mutual meshing action of the long rack 605 and the arc rack 604.

[0036] Example 2

[0037] In another embodiment of the present invention, the discharge pipe assembly 5 includes a branch pipe 501 fixed to the bottom of each lower cover 2044 and communicating with the lower cover 2044, and a flexible hose 502 disposed at the bottom end of the two branch pipes 501; it also includes a connecting pipe 503 communicating with the bottom end of the flexible hose 502, and the support rod 601 is fixed on the connecting pipe 503.

[0038] Combination Figure 1 , 2 As shown in Figure 4, the two lower housings 2044 are known to have merging and separating functions. The top of the hose 502 is connected to the two lower housings 2044 through two branch pipes 501, and the bottom is connected to a connecting pipe 503. Therefore, when the two lower housings 2044 are running, the hose 502 deforms to adapt to the movement characteristics of the two lower housings 2044 while ensuring the material discharge process.

[0039] Example 3

[0040] In another embodiment of the present invention, the feeding heating chamber assembly is composed of a stirring chamber assembly 3 and a spiral conveying chamber assembly 4; wherein the spiral conveying chamber assembly 4 is placed between the stirring chamber assembly 3 and the spherical heating chamber assembly 2 and is used for communication between the two; the stirring chamber assembly 3 includes a housing 302 fixed to the upper part of the support 1, and a feeding chamber 301 rotatably connected to the center of the top of the housing 302, and the feeding chamber 301 is composed of conical cavities and transmission cavities distributed inside and outside the housing 302; the conical cavity has a hollow structure, and a transmission rod 303 is fixed at its bottom; it also includes a column 304 annularly fixed to the upper wall of the transmission rod 303, and a heating ring 305 fixed to the outer end of each column 304, which is provided with two second springs 306 and a steel ball 307 inside, the steel ball 307 is located at the opposite ends of the two second springs 306, and the opposite ends of the two second springs 306 are connected to the opposite surfaces of the heating ring 305.

[0041] Combination Figure 3 , 4 As shown in Figures 7 and 8, the feeding chamber 301 is rotatably mounted to the housing 302. The column 304, heating coil 305, and the second spring 306 and steel ball 307 located on the upper part of the transmission rod 303 fixed at its bottom, along with the heating coil 305, achieve a stirring effect when the feeding chamber 301 rotates. Simultaneously, the steel ball 307, under the action of the second springs 306 on both sides, further enhances the melting and mixing effect of the wire by vibration. Here, the heating coil 305 is used for pre-melting the wire, while the feeding chamber 301... Figure 6 , 7 8. The feeding chamber 301 is composed of conical cavities distributed inside and outside the housing 302 and a transmission cavity. The conical cavity has a hollow structure. When feeding, the material enters from the top of the feeding chamber 301 and converges into the lower conical cavity of the feeding chamber 301 and enters the interior of the housing 302 through the hollow part where the conical cavity is located.

[0042] Furthermore, a cross 308 is fixed to the lower wall of the transmission rod 303, and a scraper 309 is fixed in a ring to the outer end of the cross 308, and several scrapers 309 are in contact with the inner wall of the housing 302.

[0043] Combination Figure 4 , 7 As shown, the cross 308 is fixed to the lower part of the transmission rod 303, and the scraper 309 on its outer periphery is in contact with the inner wall of the housing 302. Therefore, when the transmission rod 303 rotates, the cross 308 stirs the wire below the housing 302, while the scraper 309 further scrapes the inside of the housing 302 to improve the stirring effect and ensure the cleanliness of the inner wall of the housing 302.

[0044] Furthermore, a belt drive assembly 7 is also provided on the top of the support 1. The belt drive assembly 7 includes a motor 701 mounted on the top of the support 1, a drive wheel 702 fixed to the output end of the motor 701, and a drive ring 703 fixed to the outer periphery of the feed chamber 301. A drive belt 704 is sleeved between the drive ring 703 and the drive wheel 702. Figure 1 , 3 As shown.

[0045] Furthermore, a rotary sealing plug 8 is provided at the connection between the feed chamber 301 and the housing 302, combined with... Figure 1 This is to ensure the sealing of the connection between the feed chamber 301 and the housing 302.

[0046] Furthermore, the spiral conveying chamber assembly 4 includes a sleeve 401 fixed between the housing 302 and the upper cover 203 for communication between the two, and a spiral conveying roller 402 fixed between the transmission rod 303 and the ball 201. When the belt drive assembly 7 is running, the spiral conveying roller 402 rotates to convey the wire.

[0047] Here, the sleeve 401 and the spiral conveying roller 402 are respectively fixed between the housing 302 and the upper cover 203, and between the transmission rod 303 and the ball 201, playing the roles of material conveying and support. Since the spiral conveying roller 402 is fixed between the transmission rod 303 and the ball 201, the belt drive assembly 7 can drive the mixing chamber assembly 3, the spiral conveying chamber assembly 4, and the spherical heating chamber assembly 2 to operate synchronously, thereby driving the overall operation of the device in a low-energy-consumption manner and improving the energy-saving effect of the device.

[0048] Furthermore, a heating strip 403 is embedded in the inner wall of the sleeve 401 in an annular shape, which further enhances the heating effect of the spiral conveying cavity assembly 4 and realizes the solid heat process after the wire is preheated, while the spherical heating cavity assembly 2 below realizes the thorough and uniform heating of the wire.

[0049] This application achieves a multi-stage heating process for the wire by sequentially arranging the stirring chamber assembly 3, the spiral conveying chamber assembly 4, and the spherical heating chamber assembly 2, thereby ensuring the heating efficiency and quality of the wire.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Detachable installation can take many forms, such as through a combination of plug-in and snap-fit ​​connections, or through bolted connections, etc.

[0051] The foregoing, in conjunction with embodiments and accompanying drawings, has clearly and completely described the concept, specific structure, and resulting technical effects of the present invention, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the possibility of forming a better connection structure by adding or reducing connecting accessories, depending on the specific implementation.

[0052] The above embodiments, which describe the specific features of the present invention, are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above description of the invention shall fall within the scope of protection of the present invention.

Claims

1. A heating assembly for a printhead, characterized in that, include: The bracket (1) is provided on the bracket (1) and the feeding heating chamber assembly, the spherical heating chamber assembly (2) and the discharge pipe assembly (5) are arranged in an upper, middle and lower position. The spherical heating chamber assembly (2) located in the middle forms a spherical heating chamber between the feeding end and the discharge end of the print head. The spherical heating cavity assembly (2) consists of a sphere (201), an outer casing placed on the outer periphery of the sphere (201), and a first annular heating tube (202) and a second annular heating tube (205). The first annular heating tube (202) and the second annular heating tube (205) are respectively disposed on the opposite surfaces of the sphere (201) and the outer casing, forming a heating cavity between the sphere (201) and the outer casing for uniform heating and melting of the wire. The outer casing includes an upper casing (203) fixed in the middle of the bracket (1) and a lower casing component (204) adapted and engaged with the upper casing (203). The lower casing component (204) includes an electric telescopic rod (2041) fixed at the bottom of the bracket (1) and a mounting frame (2042) fixed at the telescopic end of the electric telescopic rod (2041). The mounting frame (2042) is connected to two pairs of rotatable mounting rings (2043) through mounting posts at its opposite ends. Each pair of mounting rings (2043) has two rings. The two mounting rings (2043) closer to the inner side are fixed to one of the lower casings (2044), and the two mounting rings (2043) closer to the outer side are fixed to the other lower casing (2044). It also includes a meshing drive assembly (6), which enables the two lower covers (2044) to come together and move upward to dock with the upper cover (203) when the electric telescopic rod (2041) extends. When the electric telescopic rod (2041) retracts, it enables the two lower covers (2044) to disengage from the upper cover (203) and the expansion process after disengagement. The feeding heating chamber assembly is composed of a stirring chamber assembly (3) and a spiral conveying chamber assembly (4); The spiral conveying chamber assembly (4) is placed between the stirring chamber assembly (3) and the spherical heating chamber assembly (2) and is used for communication between the two. The stirring chamber assembly (3) includes a housing (302) fixed on the upper part of the support (1) and a feeding chamber (301) rotatably connected to the center of the top of the housing (302). The feeding chamber (301) is composed of a conical cavity and a transmission cavity distributed inside and outside the housing (302). The conical cavity has a hollow structure and a transmission rod (303) is fixed at its bottom. The stirring chamber assembly (3) further includes a column (304) annularly fixed to the upper wall of the transmission rod (303), and a heating coil (305) fixed to the outer end of each column (304), which is provided with two second springs (306) and a steel ball (307) inside. The steel ball (307) is located at the opposite ends of the two second springs (306), and the opposite ends of the two second springs (306) are connected to the opposite surfaces of the heating coil (305). The lower wall of the transmission rod (303) is also fixed with a cross (308) and a scraper (309) fixed in a ring at the outer end of the cross (308), and several scrapers (309) are attached to the inner wall of the housing (302).

2. The heating assembly for a printhead according to claim 1, characterized in that: The meshing drive assembly (6) includes a support rod (601) and long racks (605) fixed at both ends of the support rod (601). It also includes arc-shaped racks (604) respectively disposed on the outer walls of the two lower housings (2044), wherein the arc-shaped racks (604) mesh with their corresponding long racks (605); The support rod (601) is provided with a connecting block (602) near the end of the bracket (1). The connecting block (602) is slidably installed inside the groove opened on the side wall of the bracket (1) and is longitudinally connected to the top of the groove with a first spring (603).

3. The heating assembly for a printhead according to claim 2, characterized in that: The discharge pipe assembly (5) includes a branch pipe (501) fixed to the bottom of each of the lower covers (2044) and communicating with the lower covers (2044), and a flexible hose (502) disposed at the bottom of the two branch pipes (501); it also includes a connecting pipe (503) connected to the bottom of the flexible hose (502), and the support rod (601) is fixed on the connecting pipe (503).

4. The heating assembly for a printhead according to claim 1, characterized in that: The top of the bracket (1) is also provided with a belt drive assembly (7). The belt drive assembly (7) includes a motor (701) provided on the top of the bracket (1), a drive wheel (702) fixed at the output end of the motor (701), and a drive ring (703) fixed on the outer periphery of the feed chamber (301). A drive belt (704) is sleeved between the drive ring (703) and the drive wheel (702).

5. The heating assembly for a printhead according to claim 1, characterized in that: A rotary sealing plug (8) is provided at the connection between the feed chamber (301) and the shell (302).

6. The heating assembly for a printhead according to claim 1, characterized in that: The spiral conveying chamber assembly (4) includes a sleeve (401) fixed between the housing (302) and the upper cover (203) for communication between the two, and a spiral conveying roller (402) fixed between the transmission rod (303) and the ball (201). When the belt drive assembly (7) is running, the spiral conveying roller (402) rotates to realize the conveying of the wire.

7. The heating assembly for a printhead according to claim 6, characterized in that: The inner wall of the sleeve (401) is circumferentially embedded with a heating strip (403).

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