Lateral powder feeding device for additive manufacturing

Abstract

The utility model belongs to the technical field of laser cladding, and discloses a lateral powder feeding device for additive manufacturing, which comprises a laser head, the laser head is connected with a first fixing frame and a second fixing frame, the first fixing frame is rotatably connected with a sand blasting pipe, the second fixing frame is provided with a sliding groove, and the inner side of the sliding groove is slidably connected with a mounting frame. The second fixing frame is rotatably connected with a threaded rod and a rotating cylinder, the threaded rod is connected with the rotating cylinder, the mounting frame is in threaded connection with the threaded rod, the inner side of the rotating cylinder is slidably connected with a screwing column, the rotating cylinder is connected with a spring, and the free end of the spring is rotatably connected with the screwing column; the rotating cylinder is provided with a sliding ring groove, the screwing column is connected with a positioning block, the positioning block is slidably connected with the sliding ring groove, and a positioning groove is formed in the side wall of the sliding ring groove. According to the technical scheme, the situation that the angle of the sand blasting pipe is changed due to the fact that an external object mistakenly touches the screwing column can be avoided, and the practicability and stability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cladding, in particular to a side powder feeding device for additive manufacturing. Background Technique

[0002] Laser cladding, also known as laser cladding or laser coating, is a new surface modification technology. It forms a metallurgical-bonded filler cladding layer on the surface of the substrate by adding a cladding material on the surface of the substrate and using a high-energy density laser beam to melt it together with a thin layer of the substrate surface. When laser cladding is carried out, the cladding material needs to be continuously ejected, and thus a powder feeding device is required;

[0003] For example, the Chinese utility model (publication number CN220278270U) discloses a side powder feeding device for additive manufacturing, which includes a laser head, a first fixing plate, a second fixing plate, a sandblasting pipe and other structures. The technical solution can arbitrarily adjust the spraying angle of the sandblasting pipe through bolts.

[0004] However, the above technical solution still has the following technical problems in actual use: the angle of the sandblasting pipe is adjusted by turning the bolt to drive the moving plate to move, but there is no positioning device after the bolt adjustment is completed, and there is still a section of the bolt protruding outside the second fixing plate after the adjustment is completed. As a result, when in use, external objects are very likely to touch the bolt, causing the bolt to rotate and thus the angle of the sandblasting pipe to change, affecting the use, and the practicability is poor. Content of the Utility Model

[0005] The utility model aims to provide a side powder feeding device for additive manufacturing to solve the problems raised in the above background technique.

[0006] To achieve the above object, the utility model provides the following technical solution:

[0007] A side powder feeding device for additive manufacturing includes a laser head. The laser head is connected with a first fixing frame and a second fixing frame. The first fixing frame is rotatably connected with a sandblasting pipe. The second fixing frame is provided with a sliding groove. An installation frame is slidably connected to the inner side of the sliding groove. The installation frame is rotatably connected with a positioning cylinder. The sandblasting pipe is slidably connected with the positioning cylinder. The second fixing frame is rotatably connected with a threaded rod and a rotating cylinder. The threaded rod is connected with the rotating cylinder. The installation frame is threadedly connected with the threaded rod. A screwing column is slidably connected to the inner side of the rotating cylinder. The rotating cylinder is connected with a spring. The free end of the spring is rotatably connected with the screwing column. The rotating cylinder is provided with a sliding ring groove. The screwing column is connected with a positioning block. The positioning block is slidably connected with the sliding ring groove. The side wall of the sliding ring groove is provided with a positioning groove. The positioning block and the positioning groove cooperate with each other.

[0008] Preferably, the screwing column is provided with a marking line.

[0009] Preferably, a sand delivery pipe is connected to the sand blasting pipe.

[0010] Preferably, a friction block is connected to the second fixing frame, a friction ring is connected to the threaded rod, and the friction ring is rotatably connected to the friction block.

[0011] Beneficial effects of this technical solution compared with the prior art:

[0012] (1) In this technical solution, the screwing column and the threaded rod are separated by the rotating cylinder. The rotating cylinder can limit the screwing column. Under the action of the spring, the positioning block is located in the sliding ring groove. At this time, rotating the screwing column will only make the screwing column rotate relative to the rotating cylinder, and the threaded rod will not rotate. Furthermore, it can avoid the situation that the angle of the sand blasting pipe changes due to accidental contact of an external object with the screwing column, improving the practicability and stability of the device; the screwing column will not protrude relative to the second fixing frame, further avoiding the situation that an external object catches the screwing column and drives the threaded rod to rotate; when it is necessary to adjust the angle of the sand blasting pipe, just pull the screwing column outwards to make the positioning block insert into the positioning groove, and after the adjustment is completed, just let go of the hand to make the positioning block automatically slide into the sliding ring groove again. The operation is convenient and the practicability is greatly improved.

[0013] (2) This technical solution is provided with marking lines, so that the positioning block can be quickly aligned with the positioning groove subsequently; the stability of the threaded rod is improved through the friction block and the friction ring, so that the threaded rod can be more stable and immovable when the screwing column rotates relative to the rotating cylinder. Description of the Drawings

[0014] Figure 1 is the front view of the present utility model;

[0015] Figure 2 is the top view cross-sectional view of the second fixing plate provided by the present utility model;

[0016] Figure 3 is Figure 2 the enlarged view at A in

[0017] Figure 4 is the side view partial cross-sectional view of the second fixing plate provided by the present utility model;

[0018] Figure 5 is the structural schematic diagram of the rotating cylinder provided by the present utility model;

[0019] Figure 6 is the side view cross-sectional view of the friction block provided by the present utility model;

[0020] Figure 7 is the side view of the screwing column provided by the present utility model;

[0021] Reference numerals: laser head 1, first fixing frame 2, sandblasting pipe 3, second fixing frame 4, sand feeding pipe 5, mounting frame 6, positioning cylinder 7, sliding groove 8, screwing column 9, rotating cylinder 10, threaded rod 11, friction ring 12, spring 13, positioning block 14, positioning groove 15, sliding ring groove 16, friction block 17, marking line 18. Detailed implementation mode

[0022] The present utility model will be further described in detail below in conjunction with the accompanying drawings and the implementation mode:

[0023] As Figures 1 to 7 A lateral powder feeding device for additive manufacturing shown in the figure includes a laser head 1. The laser head 1 is connected with a first fixing frame 2 and a second fixing frame 4. There are two groups of the first fixing frame 2 and the second fixing frame 4 respectively. The two groups of the first fixing frame 2 and the second fixing frame 4 are respectively located on the left and right sides of the laser head 1. The first fixing frame 2 is rotatably connected with a sandblasting pipe 3. A sliding groove 8 is arranged inside the second fixing frame 4. An installation frame 6 is slidably connected inside the sliding groove 8. The installation frame 6 can only slide left and right along the sliding groove 8. The installation frame 6 is rotatably connected with a positioning cylinder 7. The sandblasting pipe 3 is slidably connected with the positioning cylinder 7. The second fixing frame 4 is rotatably connected with a threaded rod 11 and a rotating cylinder 10. The threaded rod 11 is fixedly connected with the rotating cylinder 10. The threaded rod 11 is rotatably connected with the left side wall of the second fixing frame 4. The rotating cylinder 10 is rotatably connected with the right side wall of the second fixing frame 4. The installation frame 6 is threadedly connected with the threaded rod 11. A screwing column 9 is slidably connected inside the rotating cylinder 10. The longitudinal section of the screwing column 9 is circular. The screwing column 9 can rotate relative to the rotating cylinder 10. A spring 13 is connected inside the rotating cylinder 10. The free end of the spring 13 is rotatably connected with the screwing column 9. The rotating cylinder 10 is provided with a sliding ring groove 16. The screwing column 9 is connected with a positioning block 14. The positioning block 14 is slidably connected with the sliding ring groove 16. The positioning block 14 can rotate along the sliding groove 8. A positioning groove 15 is arranged on the side wall of the sliding ring groove 16. The positioning block 14 and the positioning groove 15 cooperate with each other, that is, the positioning block 14 can be inserted into the positioning groove 15.

[0024] The screwing column 9 is provided with a marking line 18. The sandblasting pipe 3 is connected with a sand feeding pipe 5. The second fixing frame 4 is connected with a friction block 17. The threaded rod 11 is connected with a friction ring 12. The friction ring 12 is rotatably connected with the friction block 17.

[0025] First of all, since the sliding groove 8 plays a role in rotating and limiting the installation frame 6, when the threaded rod 11 rotates, it will drive the installation frame 6 to move left or right along the sliding groove 8. Since one end of the sandblasting pipe 3 is rotatably connected with the first fixing plate, the movement of the installation frame 6 will push the positioning cylinder 7 to move, and at the same time push the upper end of the sandblasting pipe 3 to move. And because the sandblasting pipe 3 can slide relative to the positioning cylinder 7, and the positioning cylinder 7 is also rotatably connected with the installation frame 6, the movement of the positioning cylinder 7 can push the upper end of the sandblasting pipe 3 to move, thus completing the angle adjustment of the sandblasting pipe 3.

[0026] The specific implementation process is as follows:

[0027] The following further explains how to control the rotation of the screw rod 11 by turning the turning column 9 and release the control of the turning column 9 on the screw rod 11: Taking the second fixed plate on the right side as an example, as Figure 2 and Figure 3 shown, due to the cooperation of the friction block 17 and the friction ring 12, the screw rod 11 and the rotating cylinder 10 cannot be easily moved either. At this time, the positioning block 14 is located in the sliding ring groove 16. Directly turning the turning column 9 will cause the turning group to rotate relative to the rotating cylinder 10. At this time, the positioning block 14 will rotate along the sliding chute, so that turning the turning column 9 cannot make the rotating cylinder 10 and the screw rod 11 rotate, thus avoiding the situation that an external object accidentally touches the turning column 9, causing the screw rod 11 to rotate and then the angle of the sandblasting pipe 3 to change. And at this time, under the action of the spring 13, the turning column 9 will not easily move to the right. When it is necessary to turn the screw rod 11, turn the turning column 9, and cooperate with the marking line 18 to make the positioning block 14 rotate to the left of the positioning groove 15. The position of the marking line 18 and the positioning block 14 cooperate with each other. Whichever position the marking line 18 points to, the positioning block 14 points to that position. Then pull the turning column 9 to the right to make the positioning block 14 slide into the positioning groove 15. The rotation of the positioning block 14 along the rotating cylinder 10 is restricted by the positioning groove 15. At the same time, the spring 13 is stretched. In actual operation, a rightward pulling force can also be applied to the turning column 9 and then the turning column 9 is rotated. When the positioning block 14 rotates to the left of the positioning groove 15, the positioning block 14 can also quickly slide into the positioning groove 15 under the action of the pulling force. At this time, the positioning groove 15 restricts the rotation of the positioning block 14. Rotate the turning column 9, and the rotating cylinder 10 and the turning block can be driven to rotate together through the positioning block 14, thereby driving the screw rod 11 to rotate, completing the adjustment of the angle of the sandblasting pipe 3. After the adjustment is completed, release the turning column 9, and the turning column 9 is pulled to the left under the restoring force of the spring 13, so that the positioning block 14 slides out of the positioning groove 15 and enters the sliding chute again. At this time, turning the turning column 9 cannot drive the screw rod 11 to rotate.

[0028] In this technical solution, the screwing column 9 is separated from the threaded rod 11 through the rotating cylinder 10. The rotating cylinder 10 can limit the screwing column 9. Under the action of the spring 13, the positioning block 14 is located in the sliding ring groove 16. At this time, rotating the screwing column 9 will only cause the screwing column 9 to rotate relative to the rotating cylinder 10, and the threaded rod 11 will not rotate. Furthermore, it can avoid the situation that the angle of the sandblasting pipe 3 is changed due to an external object accidentally touching the screwing column 9, improving the practicability and stability of the device; the screwing column 9 will not protrude relative to the second fixed frame 4, further avoiding the situation that an external object catches the screwing column 9 and drives the threaded rod 11 to rotate; when it is necessary to adjust the angle of the sandblasting pipe 3, only need to pull the screwing column 9 outwards so that the positioning block 14 is inserted into the positioning groove 15. After the adjustment is completed, just let go and the positioning block 14 will automatically slide into the sliding ring groove 16 again. The operation is convenient and the practicability is greatly improved; the marking line 18 is set, so that the positioning block 14 can be quickly aligned with the positioning groove 15 subsequently; the stability of the threaded rod 11 is improved through the friction block 17 and the friction ring 12, so that the threaded rod 11 can be more stable and immovable when the screwing column 9 rotates relative to the rotating cylinder 10.

[0029] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics known in the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A lateral powder feeding device for additive manufacturing, characterized in that: The laser head (1) comprises a laser head (1), wherein the laser head (1) is connected to a first fixed frame (2) and a second fixed frame (4), wherein the first fixed frame (2) is rotatably connected to a sandblasting tube (3), the second fixed frame (4) is provided with a sliding groove (8), the inner side of the sliding groove (8) is slidably connected to a mounting frame (6), the mounting frame (6) is rotatably connected to a positioning cylinder (7), the sandblasting tube (3) is slidably connected to the positioning cylinder (7), the second fixed frame (4) is rotatably connected to a threaded rod (11) and a rotating cylinder (10), the threaded rod (11) is connected to the rotating cylinder (10), and the The mounting frame (6) is threadedly connected to the threaded rod (11); a twisting column (9) is slidably connected to the inner side of the rotating cylinder (10); the rotating cylinder (10) is connected to a spring (13); the free end of the spring (13) is rotatably connected to the twisting column (9); the rotating cylinder (10) is provided with a sliding ring groove (16); the twisting column (9) is connected to a positioning block (14); the positioning block (14) is slidably connected to the sliding ring groove (16); a positioning groove (15) is provided on a side wall of the sliding ring groove (16); the positioning block (14) and the positioning groove (15) cooperate with each other.

2. A lateral powder feeding device for additive manufacturing according to claim 1, characterized in that: The twisting column (9) is provided with a marking line (18).

3. A lateral powder feeding device for additive manufacturing according to claim 1, characterized in that: The sandblasting pipe (3) is connected to a sand delivery pipe (5).

4. A lateral powder feeding device for additive manufacturing according to claim 1, characterized in that: The second fixed frame (4) is connected to a friction block (17), the threaded rod (11) is connected to a friction ring (12), and the friction ring (12) is rotatably connected to the friction block (17).

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