Hard aluminum tube inner surface sandblasting treatment device

Abstract

This utility model discloses a sandblasting device for the inner surface of hard aluminum tubes, specifically relating to the field of aluminum tube sandblasting technology. It includes a housing with two openings on its inner side. A fixing frame is fixedly connected to one side of the housing, and a sandblasting mechanism is installed on one side of the fixing frame. The sandblasting mechanism includes a load-bearing rod with three slots on its inner side. Two positioning frames are fixedly connected to the outer side of the load-bearing rod, and three electric push rods are hinged to the inner side of the load-bearing rod. One end of each electric push rod is rotatably connected to a connecting seat. This utility model can adapt to aluminum tubes of different diameters through the deflection and radial expansion and contraction of the sandblasting tube, eliminating the need for frequent nozzle changes. Simultaneously, it dynamically adjusts the sandblasting angle to approach the optimal value, ensuring uniform treatment. Combined with three sets of opposing rotating rollers and support rings, it achieves automatic centering of the aluminum tube and forms a segmented continuous support track, preventing changes in the sandblasting distance caused by tube sagging, thereby improving the equipment's versatility and sandblasting stability.

Description

Technical Field

[0001] This utility model relates to the field of aluminum tube sandblasting technology, and more specifically, to a device for sandblasting the inner surface of hard aluminum tubes. Background Technology

[0002] Sandblasting involves using a sandblasting machine to evenly impact the surface of aluminum profile products with hard, fine diamond particles, creating uniform pits on the surface. The advantages of sandblasting include removing oxide films from the surface of aluminum parts, improving the mechanical properties of aluminum parts, and removing tiny burrs from aluminum profiles. In aluminum tube processing, the inner surface of the aluminum tube needs to be sandblasted.

[0003] In practical applications, when sandblasting aluminum tubes of different diameters, the sandblasting from the blasting pipe cannot directly form a relatively comprehensive sandblasting surface on the inner surface of the aluminum tube. It is necessary to repeatedly adjust the position of the blasting pipe inside the aluminum tube for sandblasting, which reduces the sandblasting efficiency of the aluminum tube. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a sandblasting treatment device for the inner surface of hard aluminum tubes to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A sandblasting device for the inner surface of a rigid aluminum tube includes a housing with two openings on its inner side. A fixing frame is fixedly connected to one side of the housing, and a sandblasting mechanism is installed on one side of the fixing frame. The sandblasting mechanism includes a load-bearing rod with three slots on its inner side. Two positioning frames are fixedly connected to the outer side of the load-bearing rod. Three electric push rods are hinged to the inner side of the load-bearing rod. One end of each electric push rod is rotatably connected to a connecting seat. A connecting plate is fixedly connected to the bottom of the connecting seat. A second connecting seat is fixedly connected to one side of the connecting plate. A positioning rod is rotatably connected to the outer side of the second connecting seat. One end of the positioning rod is fixedly connected to the outer side of the load-bearing rod. Sand conveying pipes are installed inside each of the three slots. The outer side of each sand conveying pipe is fixedly connected to the inner side of the positioning frame. A sandblasting pipe is fixedly connected to one end of each sand conveying pipe. The outer side of the sandblasting pipe is fixedly connected to one side of the second connecting seat. Multiple positioning and guiding mechanisms are installed inside the housing.

[0006] By adopting the above technical solution, three deflectable sandblasting pipes can be used to sandblast the inner wall of aluminum pipes of different diameters. At the same time, the sand discharge angle of the sandblasting pipes can be kept at a suitable angle to the inner surface of the aluminum pipe, thereby improving the uniformity of the sandblasting treatment of the aluminum pipe.

[0007] As a further description of the above technical solution: the positioning and guiding mechanism includes two rotating rods, the outer side of which is rotatably connected to the inner side of the housing. Two threads are provided on the outer side of the rotating rods, and the threads are symmetrically arranged on the outer side of the rotating rods. A bevel gear one is fixedly connected to the bottom end of the rotating rod. Three dual-output shaft servo motors are fixedly connected to the lower surface of the housing. Two bevel gears two are fixedly connected to the two output ends of each dual-output shaft servo motor. The outer side of the bevel gears two meshes with one side of the bevel gear one. Two transmission frames are threadedly connected to the outer side of the rotating rod. A rotating roller is rotatably connected to one side of the transmission frame. Two support rings are fixedly connected to the outer side of the rotating roller.

[0008] By adopting the above technical solution, three sets of opposing rotating rollers and support rings can be used to position and guide aluminum tubes of different diameters, so that the aluminum tubes can maintain smooth movement and stable sandblasting during the reciprocating sandblasting process.

[0009] The technical effects and advantages of this utility model are as follows: 1. By setting up a sandblasting mechanism, compared with the existing technology, the sandblasting pipe can be adapted to various aluminum pipes of different diameters through deflection and radial expansion and contraction. There is no need to frequently use nozzles suitable for different pipe diameters. At the same time, the deflectable sandblasting pipe dynamically adjusts the sandblasting angle according to the pipe diameter, making it as close as possible to the optimal sandblasting angle, ensuring uniform and consistent treatment results, and improving the versatility of the equipment. 2. By setting up a positioning and guiding mechanism, compared with the existing technology, three sets of opposing rotating rollers and support rings can clamp aluminum tubes of different diameters in real time, realizing automatic centering of the aluminum tubes. The three sets of rotating rollers and support rings are arranged in sections along the length of the aluminum tube to form a continuous support track, avoiding changes in the sandblasting distance caused by the tube body sagging due to its own weight, and improving the sandblasting stability of the aluminum tubes. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the bottom structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the right side of the present invention.

[0013] Figure 4 This is a partial schematic diagram of the connection between the fixing frame and the load-bearing rod of this utility model.

[0014] Figure 5 This is a partial schematic diagram of the connection between the rotating rod and the transmission frame of this utility model.

[0015] Figure 6 For the present utility model Figure 4 Enlarged diagram of A in the middle.

[0016] The attached diagram is labeled as follows: 1. Outer shell; 2. Opening; 3. Fixing frame; 4. Load-bearing rod; 5. Slot; 6. Positioning frame; 7. Electric push rod; 8. Connecting seat one; 9. Connecting seat two; 10. Positioning rod one; 11. Sand conveying pipe; 12. Sandblasting pipe; 13. Rotating rod; 14. Thread; 15. Bevel gear one; 16. Dual-axis servo motor; 17. Bevel gear two; 18. Transmission frame; 19. Rotating roller; 20. Support ring; 21. Connecting plate. Detailed Implementation

[0017] 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.

[0018] The embodiments disclosed in this application are as follows: Figure 1-6 The hard aluminum tube inner surface sandblasting device shown includes a housing 1 with two openings 2 on the inner side of the housing 1. A fixing frame 3 is fixedly connected to one side of the housing 1, and a sandblasting mechanism is installed on one side of the fixing frame 3. The sandblasting mechanism includes a load-bearing rod 4 with three slots 5 on the inner side of the load-bearing rod 4. Two positioning frames 6 are fixedly connected to the outer side of the load-bearing rod 4, and three electric push rods 7 are hinged to the inner side of the load-bearing rod 4. One end of the electric push rod 7 is rotatably connected to a connecting seat 8. A connecting plate 21 is fixedly connected to the bottom side of the connecting seat 8. A connecting seat 9 is fixedly connected to one side of the connecting plate 21, and a positioning rod is rotatably connected to the outer side of the connecting seat 9. Positioning rod 10 is fixedly connected at one end to the outside of the load-bearing rod 4. Sand conveying pipes 11 are provided on the inner side of the three slots 5. The outer side of the sand conveying pipes 11 is fixedly connected to the inner side of the positioning frame 6. Sand blasting pipes 12 are fixedly connected at one end of the sand conveying pipes 11. The outer side of the sand blasting pipes 12 is fixedly connected to one side of the connecting seat 2 9. Multiple positioning and guiding mechanisms are provided on the inner side of the outer shell 1. Three electric push rods 7 are used to push the connecting seat 1 8 and the connecting plate 21 to drive the sand blasting pipes 12 to deflect with the connecting seat 2 9 and the positioning rod 10, so that the sand outlet of the three sand blasting pipes 12 expands and adjusts to a suitable diameter, which is convenient for sandblasting different types of aluminum pipes.

[0019] Reference Figure 1 , Figure 3 and Figure 5As shown, the positioning and guiding mechanism includes two rotating rods 13. The outer side of the rotating rods 13 is rotatably connected to the inner side of the outer shell 1. Two threads 14 are provided on the outer side of the rotating rods 13, and the threads 14 are symmetrically arranged on the outer side of the rotating rods 13. A bevel gear 15 is fixedly connected to the bottom end of the rotating rods 13. Three dual-output shaft servo motors 16 are fixedly connected to the lower surface of the outer shell 1. Two bevel gears 17 are fixedly connected to the two output ends of the dual-output shaft servo motors 16. The outer side of the bevel gears 17 meshes with one side of the bevel gear 15. Two transmission frames 18 are threadedly connected to the outer side of the rotating rods 13. A rotating roller 19 is rotatably connected to one side of the transmission frame 18. Two support rings 20 are fixedly connected to the outer side of the rotating roller 19. The dual-output shaft servo motors 16 and bevel gears 17 drive the corresponding two bevel gears 15 and rotating rods 13 in opposite directions, so that the threads 14 on the outer side of the rotating rods 13 can drive the two transmission frames 18 in opposite directions, which facilitates the rotation roller 19 and support rings 20 to guide the aluminum tube.

[0020] The working principle of this utility model is as follows: When sandblasting an aluminum tube, one end of the aluminum tube is first inserted into the interior of the outer shell 1 through the opening 2 on one side of the outer shell 1, and the bottom side of the aluminum tube contacts the rotating roller 19 and support ring 20 on the outer side of the transmission frame 18 below the inner side of the outer shell 1. Then, three dual-output shaft servo motors 16 are started to drive the bevel gears 17 at both ends to rotate, and the two bevel gears 17 mesh with the bevel gear 15 to transmit power. Then, the two bevel gears 15 drive the corresponding rotating rod 13 to rotate in opposite directions inside the outer shell 1, and the two threads 14 on the inner side of the rotating rod 13 move the corresponding threaded transmission frame 18 up and down, so that the two transmission frames 18 drive the rotating roller 19 and the two support rings 20 to clamp the upper and lower sides of the aluminum tube in opposite directions, so that the center of the aluminum tube is aligned with the load-bearing rod 4. The centers of the tubes are kept at the same height. Then, the fixing frame 3 is used to support the aluminum tube by rotating along the three opposing rollers 19 and support rings 20 in the three positioning guide mechanisms. This allows the workers to push the aluminum tube straight towards the inside of the outer shell 1. Then, one end of the three sand conveying pipes 11 is connected to the external sandblasting tank. The sand is then conveyed through the three sand conveying pipes 11 to the sandblasting pipes 12 at the other end of the sand conveying pipes 11. The three electric push rods 7 are raised and lowered by the external PLC controller. The electric push rods 7 drive the connecting plate 21 and the sandblasting pipe 12 through the connecting seat 1 8 to deflect around the connecting seat 2 9 and the positioning rod 10. This allows the sand outlet of the three sandblasting pipes 12 to maintain a suitable distance from the inner wall of the aluminum tube. Finally, the aluminum tube moves inside the outer shell 1, so that the inner surface of the aluminum tube is sandblasted.

[0021] 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 not shown in the figures because they are existing technologies, and will not be described here.

[0022] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for sandblasting the inner surface of a hard aluminum tube, comprising a housing (1), characterized in that: The outer shell (1) has two openings (2) on its inner side. A fixing frame (3) is fixedly connected to one side of the outer shell (1), and a sandblasting mechanism is provided on one side of the fixing frame (3). The sandblasting mechanism includes a load-bearing rod (4), with three slots (5) on the inner side of the load-bearing rod (4), two positioning frames (6) fixedly connected to the outer side of the load-bearing rod (4), and three electric push rods (7) hinged to the inner side of the load-bearing rod (4). One end of the electric push rod (7) is rotatably connected to a connecting seat (8), and a connecting plate (21) is fixedly connected to the bottom side of the connecting seat (8). A connecting seat (9) is fixedly connected to one side of the connecting plate (21). Multiple positioning and guiding mechanisms are provided on the inner side of the outer shell (1).

2. The sandblasting device for the inner surface of a hard aluminum tube according to claim 1, characterized in that: The outer side of the connecting seat 2 (9) is rotatably connected to the positioning rod 1 (10), and one end of the positioning rod 1 (10) is fixedly connected to the outer side of the load-bearing rod (4).

3. The sandblasting device for the inner surface of a hard aluminum tube according to claim 1, characterized in that: Each of the three slots (5) is provided with a sand conveying pipe (11) on its inner side, and the outer side of the sand conveying pipe (11) is fixedly connected to the inner side of the positioning frame (6).

4. The sandblasting device for the inner surface of a hard aluminum tube according to claim 3, characterized in that: One end of the sand conveying pipe (11) is fixedly connected to the sand blasting pipe (12), and the outer side of the sand blasting pipe (12) is fixedly connected to one side of the connecting seat (9).

5. The sandblasting device for the inner surface of a hard aluminum tube according to claim 1, characterized in that: The positioning and guiding mechanism includes two rotating rods (13). The outer side of the rotating rod (13) is rotatably connected to the inner side of the outer shell (1). Two threads (14) are provided on the outer side of the rotating rod (13). The threads (14) are symmetrically arranged on the outer side of the rotating rod (13). A bevel gear (15) is fixedly connected to the bottom end of the rotating rod (13).

6. The sandblasting device for the inner surface of a hard aluminum tube according to claim 1, characterized in that: Three dual-axis servo motors (16) are fixedly connected to the lower surface of the outer shell (1). Two bevel gears (17) are fixedly connected to the two output ends of the dual-axis servo motors (16). The outer side of the bevel gears (17) meshes with the side of the bevel gears (15).

7. The sandblasting device for the inner surface of a hard aluminum tube according to claim 5, characterized in that: The rotating rod (13) is threaded to two transmission frames (18) on the outside. A rotating roller (19) is rotatably connected to one side of the transmission frame (18). Two support rings (20) are fixedly connected to the outside of the rotating roller (19).

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