A lateral powder feed device for additive manufacturing

Abstract

This utility model discloses a lateral powder feeding device for additive manufacturing, specifically relating to the field of laser cladding technology. It includes a laser head with an adjustment assembly mounted on its outer side. The adjustment assembly comprises three fixed frames, with a sandblasting pipe disposed inside each frame. Connecting shafts are fixedly connected to both sides of the sandblasting pipe, and the connecting shafts are rotatably connected to the inside of the fixed frames. A sand feeding pipe is connected to the top of the sandblasting pipe. A sealing mechanism is provided on the outer side of the sandblasting pipe. By incorporating the adjustment assembly and sealing mechanism, this utility model can simultaneously adjust the angles of multiple sandblasting pipes, ensuring a more consistent adjustment angle. This reduces uneven powder distribution or inconsistent cladding layer thickness caused by angle differences. Simultaneously, it provides sealing and protection at the connection between the sandblasting pipe and the sand feeding pipe, reducing spray fluctuations caused by powder loss and ensuring stable powder feeding.

Description

Technical Field

[0001] This utility model relates to the field of laser cladding technology, and more specifically, to a side powder feeding device for additive manufacturing. Background Technology

[0002] Laser cladding, also known as laser bonding or laser coating, is a new surface modification technology. It involves adding cladding material to the surface of a substrate and using a high-energy-density laser beam to fuse it together with a thin layer on the substrate surface, forming a metallurgically bonded cladding layer on the substrate surface. During laser cladding, cladding material needs to be continuously sprayed out, which requires a powder feeding device.

[0003] The existing method adjusts the angle of the sandblasting pipe by moving a movable plate by turning a bolt. However, there is no positioning device after the bolt is adjusted, and a section of the bolt protrudes outside the second fixed plate after adjustment. This makes it easy for external objects to touch the bolt during use, causing it to rotate and thus changing the angle of the sandblasting pipe, affecting its use and making it impractical.

[0004] A search revealed that Chinese patent CN222885818U discloses a side-feeding powder device for additive manufacturing. A rotating cylinder limits the movement of a screwing column, and a spring-loaded positioning block is located within a sliding ring groove. Rotating the screwing column only causes it to rotate relative to the rotating cylinder; the threaded rod remains stationary. This prevents external objects from accidentally touching the screwing column and altering the angle of the sandblasting pipe, improving the device's practicality and stability. Furthermore, the screwing column does not protrude relative to the second fixed frame, further preventing external objects from catching on it and causing the threaded rod to rotate. Adjusting the sandblasting pipe angle simply requires pulling the screwing column outwards to insert the positioning block into the positioning groove. After adjustment, releasing the screwing column allows it to automatically slide back into the sliding ring groove, making operation convenient and significantly improving practicality.

[0005] In actual use, the aforementioned side powder feeding device for additive manufacturing requires individual adjustment of the sandblasting pipes, which can lead to deviations in the adjustment angles of multiple sandblasting pipes. This can affect the location of the powder flow convergence point and result in uneven cladding layer thickness. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a side powder feeding device for additive manufacturing to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A lateral powder feeding device for additive manufacturing includes a laser head, with an adjustment assembly mounted on the outside of the laser head; The adjustment assembly includes three fixed frames. A sandblasting pipe is installed inside the fixed frame. A connecting shaft is fixedly connected to both sides of the sandblasting pipe. The connecting shaft is rotatably connected to the inside of the fixed frame. A sand feeding pipe is connected to the top of the sandblasting pipe. A support frame is fixedly connected to one side of the laser head. A stepper motor is installed inside the support frame. A lead screw is fixedly connected to the output end of the stepper motor. The lead screw is rotatably connected to the inside of the support frame. A threaded block is threaded to the outside of the lead screw. A movable ring is fixedly connected to one end of the threaded block. Multiple first hinge supports are fixedly connected to the outside of the movable ring. A push rod is hinged to the inside of the first hinge support. A second hinge support is hinged to one end of the push rod. One side of the second hinge support is fixedly connected to the outside of the sandblasting pipe. A sealing mechanism is provided on the outside of the sandblasting pipe.

[0008] By adopting the above technical solution, the angles of multiple sandblasting pipes can be adjusted simultaneously, so that the adjustment angles of multiple sandblasting pipes can be kept at the same position, thereby enhancing manufacturing precision and quality.

[0009] As a further description of the above technical solution: the sealing mechanism includes a first protective shell, a second protective shell is provided on one side of the first protective shell, both the first and second protective shells are installed on the outside of the sandblasting pipe, sealing gaskets are fixedly connected to the inner sides of both the first and second protective shells, and two connecting blocks are fixedly connected to the top of both the first and second protective shells. The two connecting blocks are symmetrically distributed with the top of the first and second protective shells, and bolts are threaded inside the connecting blocks.

[0010] By adopting the above technical solution, a seal and protection can be provided at the connection between the sandblasting pipe and the sand delivery pipe, which can effectively prevent powder leakage at the connection and ensure stable powder delivery.

[0011] The technical effects and advantages of this utility model are as follows: 1. By setting up an adjustment component, compared with the existing technology, multiple sandblasting tubes can be simultaneously pushed by multiple push rods to adjust their angles through the movement of the movable ring. This makes the adjustment angles of the multiple sandblasting tubes more consistent, which can reduce uneven powder distribution or inconsistent cladding layer thickness caused by angle differences, and help improve manufacturing precision and quality. 2. By setting a sealing mechanism, compared with the existing technology, the first protective shell and the second protective shell can provide protection at the connection between the sandblasting pipe and the sand delivery pipe, and the sealing gasket can provide sealing conditions at the connection, which can effectively prevent powder leakage at the connection, ensure stable powder delivery, reduce spraying fluctuations caused by powder loss, and ensure conveying stability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the inner structure of the support frame of this utility model.

[0014] Figure 3 This is a schematic diagram of the top structure of the fixing frame of this utility model.

[0015] Figure 4 This is a schematic diagram of the sandblasting pipe structure of this utility model.

[0016] Figure 5 This is a schematic diagram of the movable ring structure of this utility model.

[0017] Figure 6 For the present utility model Figure 4 Enlarged view of the structure of part A in the middle.

[0018] The attached diagram is labeled as follows: 1. Laser head; 2. Fixing frame; 3. Connecting shaft; 4. Sandblasting pipe; 5. Sand delivery pipe; 6. Support frame; 7. Stepper motor; 8. Lead screw; 9. Threaded block; 10. Movable ring; 11. First hinge support; 12. Push rod; 13. Second hinge support; 14. First protective shell; 15. Second protective shell; 16. Sealing gasket; 17. Connecting block; 18. Bolt. Detailed Implementation

[0019] 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.

[0020] The embodiments disclosed in this application are as follows: Figure 1-6 The illustrated side powder feeding device for additive manufacturing includes a laser head 1, with an adjustment assembly mounted on the outside of the laser head 1. The adjustment assembly includes three fixed frames 2. A sandblasting pipe 4 is provided inside the fixed frame 2. A connecting shaft 3 is fixedly connected to both sides of the sandblasting pipe 4. The connecting shaft 3 is rotatably connected to the inside of the fixed frame 2. A sand feeding pipe 5 is connected to the top of the sandblasting pipe 4. A support frame 6 is fixedly connected to one side of the laser head 1. A stepper motor 7 is installed inside the support frame 6. A lead screw 8 is fixedly connected to the output end of the stepper motor 7. The lead screw 8 is rotatably connected to the inside of the support frame 6. A threaded block 9 is threadedly connected to the outside of the lead screw 8. A movable ring 10 is fixedly connected to one end of the threaded block 9. Multiple first hinge supports 11 are fixedly connected to the outside of the movable ring 10. A push rod 12 is hinged to the inside of the first hinge support 11. A second hinge support 13 is hinged to one end of the push rod 12. One side of the second hinge support 13 is fixedly connected to the outside of the sandblasting pipe 4. A sealing mechanism is provided on the outside of the sandblasting tube 4. The stepper motor 7 drives the lead screw 8 to rotate, so that the lead screw 8 drives the threaded block 9 to move the movable ring 10. The movable ring 10 can drive multiple first hinge supports 11 to move on the outside of the laser head 1. The two ends of the push rod 12 are respectively hinged to the first hinge support 11 and the second hinge support 13, so that the movable ring 10 can drive the push rod 12 to push the sandblasting tube 4 to move. The sandblasting tube 4 is rotatably connected to the fixed frame 2 through two connecting shafts 3, which can provide support for the adjustment of the sandblasting tube 4, so that the angle of multiple sandblasting tubes 4 can be adjusted at the same time. This can reduce the uneven powder distribution or inconsistent cladding layer thickness caused by angle differences, and help improve manufacturing precision and quality.

[0021] Reference Figure 4 and 6 As shown, the sealing mechanism includes a first protective shell 14, a second protective shell 15 disposed on one side of the first protective shell 14, both the first protective shell 14 and the second protective shell 15 are installed on the outside of the sandblasting pipe 4, and sealing gaskets 16 are fixedly connected to the inside of both the first protective shell 14 and the second protective shell 15. Two connecting blocks 17 are fixedly connected to the top of both the first protective shell 14 and the second protective shell 15, and the two connecting blocks 17 are symmetrically distributed with the top of the first protective shell 14 and the second protective shell 15. Bolts 18 are threaded inside the connecting blocks 17. The first protective shell 14 and the second protective shell 15 are connected by the two bolts 18 through the connecting blocks 17, so that the first protective shell 14 and the second protective shell 15 can protect the outside of the sandblasting pipe 4 and the sand delivery pipe 5. The first protective shell 14 and the second protective shell 15 can drive the sealing gasket 16 to fit against the connection between the sandblasting pipe 4 and the sand delivery pipe 5, thereby providing a seal at the connection between the sandblasting pipe 4 and the sand delivery pipe 5, which can effectively prevent powder leakage at the connection, reduce spray fluctuations caused by powder loss, and ensure stable powder delivery.

[0022] Working principle of this utility model: This utility model designs a side powder feeding device for additive manufacturing, the specific structure of which is shown in the attached instruction manual. Figure 1-6As shown, in this technical solution, through the cooperation of various structures, when laser cladding is required on the base surface, the sand feeding pipe 5 is first inserted into the sandblasting pipe 4. Then, the first protective shell 14 and the second protective shell 15 are placed outside the connection between the sandblasting pipe 4 and the sand feeding pipe 5, and connected to the internal threads of the two connecting blocks 17 by two bolts 18. This allows the two bolts 18 to fix the first protective shell 14 and the second protective shell 15, so that the first protective shell 14 and the second protective shell 15 can provide protection at the connection between the sandblasting pipe 4 and the sand feeding pipe 5. Furthermore, the connection between the first protective shell 14 and the second protective shell 15 allows the sealing gasket 16 on the inner side of the first protective shell 14 and the second protective shell 15 to fit together, thereby providing an effective seal at the connection between the sandblasting pipe 4 and the sand feeding pipe 5. Then, through... Three sandblasting pipes 4 spray cladding material and cooperate with the laser head 1 to complete laser cladding. When it is necessary to adjust the spraying angle of the three sandblasting pipes 4, the stepper motor 7 is started, and the stepper motor 7 drives the lead screw 8 to rotate, so that the lead screw 8 drives the threaded block 9 to move through the thread, so that the threaded block 9 can drive the movable ring 10 to move. The movable ring 10 is slidably connected to the outside of the laser head 1, so that the movable ring 10 can drive multiple first hinge supports 11 to move. The two ends of the push rod 12 are respectively hinged to the inner side of the first hinge support 11 and the second hinge support 13, so that the movable ring 10 can push the sandblasting pipe 4 to move to one side through the push rod 12. The sandblasting pipe 4 is rotatably connected to the inner side of the fixed frame 2 through two connecting shafts 3, so that the movement of multiple first hinge supports 11 can push the sandblasting pipe 4 to adjust the angle.

[0023] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are existing technologies and are therefore not shown in the figures and will not be described here. In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A side powder feeding device for additive manufacturing, comprising a laser head (1), characterized in that: An adjustment assembly is installed on the outside of the laser head (1); The adjustment assembly includes three fixed frames (2), and a sandblasting pipe (4) is provided inside the fixed frame (2). A connecting shaft (3) is fixedly connected to both sides of the sandblasting pipe (4). The connecting shaft (3) is rotatably connected to the inside of the fixed frame (2). A sand feeding pipe (5) is connected to the top of the sandblasting pipe (4). A sealing mechanism is provided on the outside of the sandblasting pipe (4); A support frame (6) is fixedly connected to one side of the laser head (1). A stepper motor (7) is installed inside the support frame (6). A lead screw (8) is fixedly connected to the output end of the stepper motor (7). The lead screw (8) is rotatably connected to the inside of the support frame (6). The lead screw (8) is threaded to the outside of a threaded block (9), and a movable ring (10) is fixedly connected to one end of the threaded block (9). Multiple first hinge supports (11) are fixedly connected to the outer side of the movable ring (10). A push rod (12) is hinged to the inner side of the first hinge support (11). One end of the push rod (12) is hinged to a second hinge support (13). One side of the second hinge support (13) is fixedly connected to the outer side of the sandblasting pipe (4).

2. The side powder feeding device for additive manufacturing according to claim 1, characterized in that: The sealing mechanism includes a first protective shell (14), and a second protective shell (15) is provided on one side of the first protective shell (14). Both the first protective shell (14) and the second protective shell (15) are installed on the outside of the sandblasting pipe (4).

3. The side powder feeding device for additive manufacturing according to claim 2, characterized in that: The first protective shell (14) and the second protective shell (15) are both fixedly connected to a sealing gasket (16), and the top of the first protective shell (14) and the second protective shell (15) are both fixedly connected to two connecting blocks (17).

4. The side powder feeding device for additive manufacturing according to claim 3, characterized in that: The two connecting blocks (17) are symmetrically distributed at the top of the first protective shell (14) and the second protective shell (15), and the connecting blocks (17) are internally threaded with bolts (18).

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