A nozzle feed device for 3D printing material

Abstract

The utility model discloses a kind of nozzle feeders for 3D printing material, including shell, the shell top is fixedly connected with feed cylinder, bottom is fixedly connected with printing nozzle, the shell inner cavity side wall is provided with conveying assembly, mounting groove, anti-blocking component, through slot, the shell inner cavity bottom is equipped with discharge slot, cutting assembly.A kind of nozzle feeder for 3D printing material of the utility model, by setting conveying assembly, anti-blocking component, cutting assembly etc., when using daily, according to the diameter adjustment conveying gear and the distance between limiting roller between printing consumables, it is convenient to limit the delivery of consumables, and when printing nozzle is blocked, limiting roller is moved to facilitate the back extraction of consumables, if block is more serious, cannot back extraction of consumables, start cutting assembly, cut off consumables, start anti-blocking component again to print nozzle and dredge, convenient and fast, improve the phenomenon of nozzle blockage, improve feed efficiency.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, specifically to a nozzle feeding device for 3D printing materials. Background Technology

[0002] 3D printing technology, a type of rapid prototyping technology, is a technique that uses digital model files as a basis and photosensitive materials such as photosensitive resin to construct objects layer by layer. 3D printing is typically achieved using digital material printers and is commonly used in mold making and industrial design to create models. It has gradually been applied to the direct manufacturing of some products, and parts printed using this technology already exist.

[0003] Currently, existing 3D printing nozzles typically suffer from the following drawbacks during filament feeding: Existing equipment can only convey filament forward, making it difficult to retract it. When filament is fed inward, blockages can occur due to dust or dirt clogging the extrusion orifice, solidification of residual molten filament, and improper nozzle temperature. When blockages occur, manual disassembly and unclogging with a cleaning device are usually required, which necessitates shutting down the 3D printer and is time-consuming and labor-intensive. Therefore, we propose a new nozzle feeding device for 3D printing materials. Utility Model Content

[0004] The main purpose of this invention is to provide a nozzle feeding device for 3D printing materials, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a nozzle feeding device for 3D printing materials, comprising a housing, a feeding cylinder fixedly connected to the top of the housing, a printing nozzle fixedly connected to the bottom of the housing, a conveying assembly provided in the middle of the inner cavity side wall of the housing, an installation groove fixedly connected to the lower part of the inner cavity side wall of the housing, an anti-clogging assembly provided in the inner cavity of the installation groove, a through groove opened on one side of the middle of the housing side wall, a discharge groove provided at the bottom of the inner cavity of the housing, and the discharge groove communicating with the printing nozzle, and a cutting assembly provided at the bottom of the inner cavity of the housing next to the discharge groove.

[0006] As a further description of the above technical solution, the conveying assembly includes a motor, a conveying gear, an L-shaped frame, an electric telescopic rod, a moving block, a connecting rod, and a limiting roller. The conveying gear is rotatably connected to one side of the middle of the inner cavity sidewall of the housing. The motor is fixedly connected to the sidewall of the housing, and the output end of the motor passes through the inner cavity of the housing and is fixedly connected to one side of the conveying gear. The L-shaped frame is fixedly connected to the sidewall of the housing and is located below the through slot. An electric telescopic rod is fixedly connected to the inner cavity sidewall of the L-shaped frame. A moving block is fixedly connected to one side of the electric telescopic rod, and a connecting rod is fixedly connected to one side of the moving block. The connecting rod passes through the through slot to the inner cavity of the housing, and a limiting roller is rotatably connected to one side of the connecting rod.

[0007] As a further description of the above technical solution, the conveying assembly also includes a chute and a slider. The bottom of the inner cavity of the L-shaped frame has a non-through chute, and the bottom of the moving block is fixedly connected to the slider, which is slidably connected to the inner cavity of the chute.

[0008] As a further description of the above technical solution, the anti-blocking component includes a second motor, a threaded rod, a second movable block, a second electric telescopic rod, and an anti-blocking rod. The second motor is fixedly connected to the inner wall of the mounting groove. The output end of the second motor is fixedly connected to the threaded rod. The second movable block is threadedly engaged with the threaded rod. The bottom of the second movable block is fixedly connected to the second electric telescopic rod, and the bottom of the second electric telescopic rod is fixedly connected to the anti-blocking rod.

[0009] As a further description of the above technical solution, the cutting assembly includes a gantry frame, a miniature cylinder, a blade holder, a cutting blade, and a cutting seat. The gantry frame and the cutting seat are fixedly connected to the bottom of the inner cavity of the housing and are located on both sides of the discharge chute, respectively. A miniature cylinder is fixedly connected to the inner wall of the gantry frame, and a blade holder is fixedly connected to the output end of the miniature cylinder. A cutting blade is fixedly connected to one side of the blade holder.

[0010] As a further description of the above technical solution, the cutting assembly also includes a second sliding groove, a second sliding block, and a cutting groove. The second sliding groove is symmetrically opened on both sides of the inner cavity of the gantry frame. The second sliding block is symmetrically fixedly connected to both sides of the blade holder. The second sliding block is slidably connected to the inner cavity of the second sliding groove. The cutting seat has a cutting groove on one side, and the cutting groove is adapted to the cutting blade.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By setting up conveying components, anti-clogging components, and cutting components, during daily use, the distance between the conveying gear and the limiting roller is adjusted according to the diameter of the printing consumables to facilitate the limited conveying of the consumables. When the print head is clogged, the limiting roller is moved to facilitate the retraction of the consumables. If the blockage is severe and the consumables cannot be retracted, the cutting component is activated to cut off the consumables, and then the anti-clogging component is activated to unclog the print head. This is convenient and quick, improves the phenomenon of nozzle clogging, and increases the feeding efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a nozzle feeding device for 3D printing materials proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of a nozzle feeding device for 3D printing materials proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the overall structure of a nozzle feeding device for 3D printing materials proposed in this utility model from another perspective.

[0016] Figure 4 This is a schematic diagram of the internal structure of a nozzle feeding device for 3D printing materials proposed in this utility model from another perspective.

[0017] Figure 5 This utility model proposes a nozzle feeding device for 3D printing materials. Figure 4 A magnified structural diagram at point A.

[0018] In the diagram: 1. Housing; 2. Feed cylinder; 3. Printer nozzle; 4. Conveying assembly; 5. Mounting slot; 6. Anti-clogging assembly; 7. Cutting assembly; 8. Discharge chute; 9. Through slot; 4.1. Motor 1; 4.2. Conveying gear; 4.3. L-shaped frame; 4.4. Electric telescopic rod 1; 4.5. Moving block; 4.6. Connecting rod; 4.7. Limiting roller; 4.8. Slide 1; 4.9. Slider 1; 6.1. Motor 2; 6.2. Threaded rod; 6.3. Moving block 2; 6.4. Electric telescopic rod 2; 6.5. Anti-clogging rod; 7.1. Gantry frame; 7.2. Miniature cylinder; 7.3. Tool holder; 7.4. Cutting blade; 7.5. Slide 2; 7.6. Slider 2; 7.7. Cutting seat; 7.8. Cutting slot. Detailed Implementation

[0019] To make the technical means, creative features, and objectives of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0022] Please see Figure 1-5 This utility model provides a technical solution: a nozzle feeding device for 3D printing materials, including a housing 1, a feeding cylinder 2 fixedly connected to the top of the housing 1, a printing nozzle 3 fixedly connected to the bottom, a conveying component 4 provided in the middle of the inner cavity side wall of the housing 1, an installation groove 5 fixedly connected to the lower part of the inner cavity side wall of the housing 1, an anti-blocking component 6 provided in the inner cavity of the installation groove 5, a through groove 9 opened on one side of the middle of the inner cavity side wall of the housing 1, an outlet groove 8 provided at the bottom of the inner cavity of the housing 1, and the outlet groove 8 communicating with the printing nozzle 3, and a cutting component 7 provided at the bottom of the inner cavity of the housing 1 and next to the outlet groove 8.

[0023] Specifically, such as Figure 2 , Figure 3As shown, the conveying assembly 4 includes a motor 4.1, a conveying gear 4.2, an L-shaped frame 4.3, an electric telescopic rod 4.4, a moving block 4.5, a connecting rod 4.6, and a limiting roller 4.7. The conveying gear 4.2 is rotatably connected to one side of the inner cavity sidewall of the housing 1 via a bearing, and the motor 4.1 is fixedly connected to the sidewall of the housing 1. The output end of the motor 4.1 extends through the inner cavity of the housing 1 and is fixedly connected to one side of the conveying gear 4.2. The L-shaped frame 4.3 is fixedly connected to the sidewall of the housing 1 and is located below the through groove 9. The long side of the L-shaped frame 4.3 is parallel to the through groove 9. An electric telescopic rod 4.4 is fixedly connected to the inner wall of the L-shaped frame 4.3. A moving block 4.5 is fixedly connected to one side of the electric telescopic rod 4.4. A connecting rod 4.6 is fixedly connected to one side of the moving block 4.5. The connecting rod 4.6 passes through the through groove 9 to the inner cavity of the housing 1 and is slidably connected to the inner cavity of the through groove 9. The through groove 9 provides a good limiting and guiding function for the connecting rod 4.6. A limiting roller 4.7 is rotatably connected to one side of the connecting rod 4.6 through a bearing.

[0024] The conveying assembly 4 also includes a chute 4.8 and a slider 4.9. A non-through chute 4.8 is formed at the bottom of the inner cavity of the L-shaped frame 4.3. The slider 4.9 is fixedly connected to the bottom of the moving block 4.5 and slides within the inner cavity of the chute 4.8. The chute 4.8 provides good limiting and guiding for the slider 4.9. When printing begins, the printing consumable is fed into the inner cavity of the housing 1 via the feed cylinder 2 and enters the print head 3 through the discharge chute 8. At this time, the electric telescopic rod 4.4 is activated to push the moving block 4.5, connecting rod 4.6, and limiting roller 4.7 to move. When the limiting roller 4.7 reaches its position, it clamps the consumable from both sides against the side wall of the conveying gear 4.2. The motor 4.1 is then activated, driving the conveying gear 4.2 to rotate. The conveying gear 4.2 then moves the consumable downwards, achieving convenient, fast, and stable feeding of the consumable during printing.

[0025] Specifically, such as Figure 2As shown, the anti-blocking component 6 includes a second motor 6.1, a threaded rod 6.2, a second movable block 6.3, a second electric telescopic rod 6.4, and an anti-blocking rod 6.5. The second motor 6.1 is fixedly connected to the inner wall of the mounting groove 5. The output end of the second motor 6.1 is fixedly connected to the threaded rod 6.2. The other end of the threaded rod 6.2 is rotatably connected to the inner wall of the mounting groove 5 through a bearing. The second movable block 6.3 is threadedly engaged with the threaded rod 6.2. The bottom of the second movable block 6.3 is fixedly connected to the second electric telescopic rod 6.4. The bottom of the second electric telescopic rod 6.4 is fixedly connected to the anti-blocking rod 6.5. When the print head 3 becomes clogged due to dust or dirt clogging the extrusion orifice, or due to solidified residual molten consumable, the consumable inside the housing 1 is extracted. Motor 6.1 is then started, driving the threaded rod 6.2 to rotate. This causes the moving block 6.3 to move the electric telescopic rod 6.4 and the anti-clogging rod 6.5 to the top of the discharge trough 8. Motor 6.1 is then stopped, and the electric telescopic rod 6.4 is started, moving the anti-clogging rod 6.5 downwards into the inner cavity of the print head 3. This allows for easy unclogging of the print head 3 and improves the problem of nozzle blockage.

[0026] Specifically, such as Figure 4 , Figure 5 As shown, the cutting assembly 7 includes a gantry frame 7.1, a miniature cylinder 7.2, a blade holder 7.3, a cutting blade 7.4, and a cutting seat 7.7. The gantry frame 7.1 and the cutting seat 7.7 are fixedly connected to the bottom of the inner cavity of the housing 1 and are located on both sides of the discharge chute 8, respectively. The miniature cylinder 7.2 is fixedly connected to the inner wall of the gantry frame 7.1. The blade holder 7.3 is fixedly connected to the output end of the miniature cylinder 7.2. The cutting blade 7.4 is fixedly connected to one side of the blade holder 7.3, and the cutting edge of the cutting blade 7.4 faces the cutting seat 7.7.

[0027] The cutting assembly 7 also includes a second slide groove 7.5, a second slider 7.6, and a cutting groove 7.8. The two sides of the inner cavity of the gantry frame 7.1 are symmetrically provided with the second slide groove 7.5. The two sides of the blade holder 7.3 are symmetrically fixedly connected with the second slider 7.6. The second slider 7.6 is slidably connected to the inner cavity of the second slide groove 7.5. The second slide groove 7.5 plays a good limiting and guiding role for the second slider 7.6. The cutting seat 7.7 has a cutting groove 7.8 on one side, and the cutting groove 7.8 is adapted to the cutting blade 7.4. When the cutting blade 7.4 cuts, the cutting edge of the cutting blade 7.4 enters the inner cavity of the cutting groove 7.8, thereby facilitating the cutting of consumables on the side wall of the cutting seat 7.7. When the consumable material melts and solidifies in the print head 3, making it difficult to retract, the micro cylinder 7.2 is activated to move the blade holder 7.3 and the cutting blade 7.4. The cutting blade 7.4 can then cut the consumable material against the cutting seat 7.7, making it easier to retract the consumable material and then clear the print head 3.

[0028] It should be noted that this utility model is a nozzle feeding device for 3D printing materials. When printing begins, the printing consumable is fed into the inner cavity of the housing 1 through the feed cylinder 2 and enters the printing nozzle 3 through the discharge groove 8. At this time, the electric telescopic rod 4.4 is activated to push the moving block 4.5, the connecting rod 4.6 and the limiting roller 4.7 to move. When the limiting roller 4.7 moves to the side wall of the conveying gear 4.2, the limiting roller 4.7 clamps the consumable from both sides. The motor 4.1 is activated to drive the conveying gear 4.2 to rotate. The conveying gear 4.2 can then drive the consumable to move downward, realizing the convenient, fast and stable feeding of consumables during printing, and improving feeding efficiency.

[0029] When the print head 3 is clogged due to dust or dirt blocking the extrusion orifice, or due to solidified residual molten consumable, and if the consumable is solidified in the print head 3 and it is difficult to pull it back, the shortening electric telescopic rod 4.4 is activated to move the limiting roller 4.7, causing the limiting roller 4.7 and the conveying gear 4.2 to release the consumable. Then, the micro cylinder 7.2 is activated to push the blade holder 7.3 and the cutting blade 7.4 to move. The cutting blade 7.4 can then cut the consumable against the cutting seat 7.7, making it easier to pull the consumable back and then clear the print head 3. At this time, the starting motor 6.1 drives the threaded rod 6.2 to rotate, so that the moving block 6.3 drives the electric telescopic rod 6.4 and the anti-blocking rod 6.5 to move to the top of the discharge trough 8. Then, the starting motor 6.1 stops, and the starting electric telescopic rod 6.4 drives the anti-blocking rod 6.5 to move downward to the inner cavity of the print head 3, so that the print head 3 can be unblocked. Unblocking is convenient and improves the phenomenon of nozzle blockage.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A nozzle feeding device for 3D printing materials, comprising a housing (1), characterized in that, The top of the housing (1) is fixedly connected to a feed cylinder (2), and the bottom is fixedly connected to a printing nozzle (3). A conveying assembly (4) is provided in the middle of the inner wall of the housing (1). An installation groove (5) is fixedly connected to the lower part of the inner wall of the housing (1). An anti-blocking assembly (6) is provided in the inner cavity of the installation groove (5). A through groove (9) is opened on one side of the middle of the inner wall of the housing (1). An outlet groove (8) is provided at the bottom of the inner cavity of the housing (1), and the outlet groove (8) is connected to the printing nozzle (3). A cutting assembly (7) is provided at the bottom of the inner cavity of the housing (1) and next to the outlet groove (8).

2. The nozzle feeding device for 3D printing materials according to claim 1, characterized in that, The conveying assembly (4) includes a motor (4.1), a conveying gear (4.2), an L-shaped frame (4.3), an electric telescopic rod (4.4), a moving block (4.5), a connecting rod (4.6), and a limiting roller (4.7). The conveying gear (4.2) is rotatably connected to one side of the middle of the inner cavity sidewall of the housing (1). The motor (4.1) is fixedly connected to the sidewall of the housing (1), and the output end of the motor (4.1) extends through the inner cavity of the housing (1) and is fixedly connected to one side of the conveying gear (4.2). The L-shaped frame (4.3) is fixedly connected to the side wall of the housing (1) and located below the through groove (9). An electric telescopic rod (4.4) is fixedly connected to the inner side wall of the L-shaped frame (4.3). A moving block (4.5) is fixedly connected to one side of the electric telescopic rod (4.4). A connecting rod (4.6) is fixedly connected to one side of the moving block (4.5). The connecting rod (4.6) passes through the through groove (9) to the inner cavity of the housing (1). A limit roller (4.7) is rotatably connected to one side of the connecting rod (4.6).

3. The nozzle feeding device for 3D printing materials according to claim 2, characterized in that, The conveying assembly (4) also includes a chute (4.8) and a slider (4.9). The bottom of the inner cavity of the L-shaped frame (4.3) has a non-through chute (4.8). The bottom of the moving block (4.5) is fixedly connected to the slider (4.9), and the slider (4.9) is slidably connected to the inner cavity of the chute (4.8).

4. The nozzle feeding device for 3D printing materials according to claim 1, characterized in that, The anti-blocking component (6) includes a second motor (6.1), a threaded rod (6.2), a second movable block (6.3), a second electric telescopic rod (6.4), and an anti-blocking rod (6.5). The second motor (6.1) is fixedly connected to the inner wall of the mounting groove (5). The output end of the second motor (6.1) is fixedly connected to the threaded rod (6.2). The second movable block (6.3) is threadedly engaged with the threaded rod (6.2). The bottom of the second movable block (6.3) is fixedly connected to the second electric telescopic rod (6.4). The bottom of the second electric telescopic rod (6.4) is fixedly connected to the anti-blocking rod (6.5).

5. The nozzle feeding device for 3D printing materials according to claim 1, characterized in that, The cutting assembly (7) includes a gantry frame (7.1), a miniature cylinder (7.2), a blade holder (7.3), a cutting blade (7.4), and a cutting seat (7.7). The gantry frame (7.1) and the cutting seat (7.7) are fixedly connected to the bottom of the inner cavity of the housing (1) and are located on both sides of the discharge trough (8). The miniature cylinder (7.2) is fixedly connected to the inner wall of the gantry frame (7.1). The blade holder (7.3) is fixedly connected to the output end of the miniature cylinder (7.2). The cutting blade (7.4) is fixedly connected to one side of the blade holder (7.3).

6. The nozzle feeding device for 3D printing materials according to claim 5, characterized in that, The cutting assembly (7) further includes a second sliding groove (7.5), a second sliding block (7.6), and a cutting groove (7.8). The inner walls of the gantry frame (7.1) are symmetrically provided with the second sliding groove (7.5). The two sides of the blade holder (7.3) are symmetrically fixedly connected with the second sliding block (7.6). The second sliding block (7.6) is slidably connected to the inner cavity of the second sliding groove (7.5). The cutting seat (7.7) is provided with a cutting groove (7.8) on one side, and the cutting groove (7.8) is adapted to the cutting blade (7.4).

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