Pipeline reaming and shrinking machine for industrial air conditioner production
By designing an automated pipe expansion and contraction machine, the problems of burrs and unevenness at the openings of air conditioning pipes have been solved, achieving precise processing and sealing of holes, and improving the performance and energy efficiency of the air conditioning system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-06
AI Technical Summary
During the process of enlarging or shrinking holes in air conditioning pipes, burrs or unevenness at the pipe opening can cause deviations in hole size and scratches or cracks on the inner surface of the hole, affecting the sealing performance and leading to leakage.
A pipe reaming and shrinking machine was designed, comprising a grinding component, a clamping component, and a moving component. The grinding head grinds the inner or outer wall of the pipe, and combined with automated operation, it ensures the flatness and alignment of the holes and avoids processing errors.
It effectively removes burrs and unevenness at pipe openings, ensuring the dimensional accuracy and sealing of holes, preventing leakage, and improving processing quality and automation.
Smart Images

Figure CN223971372U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioning pipe processing technology, specifically a pipe expansion and reduction machine for industrial air conditioning production. Background Technology
[0002] Air conditioning pipes are the pipes that connect various components of an air conditioning system. They are mainly used to transport refrigerant from the compressor to components such as the evaporator and condenser. The design and materials of the pipes directly affect the cooling efficiency and performance of the air conditioner. By processing the air conditioning pipes by reducing or expanding orifices, the flow of refrigerant can be optimized. Reducing orifices can increase the fluid velocity and increase the pressure difference, thereby improving the heat exchange efficiency. Expanding orifices helps to reduce flow resistance and avoid the generation of eddies, thereby effectively improving the overall performance and energy efficiency ratio of the system. Therefore, when processing air conditioning pipes, it is necessary to use a hole expanding and reducing machine.
[0003] However, when expanding or shrinking pipe openings, if there are burrs or unevenness at the pipe opening, it will cause deviations in the size of the hole during expansion or reduction, as well as scratches or cracks on the inner surface of the hole, making it difficult to assemble correctly with other components. This will result in poor sealing at the connection and leakage.
[0004] Therefore, this utility model provides a pipe expansion and reduction machine for industrial air conditioning production to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] This utility model provides a pipe expansion and reduction machine for industrial air conditioning production, which aims to solve the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: It includes a table body, a first cylinder fixedly installed at the edge of the upper surface of the table body, an installation box fixedly connected to the output end of the first cylinder, a second cylinder fixedly connected to one side of the installation box, a first motor fixedly installed on the other side of the installation box, a belt drive component fixedly connected to the output end of the first motor, a grinding component fixedly connected to one side of the belt drive component, a clamping component fixedly connected to one side of the upper surface of the table body, and a moving component slidably connected to the lower surface of the installation box.
[0009] The grinding assembly includes a first rotating rod, one end of which is fixedly connected to one side of a belt drive component, and the other end of which is fixedly connected to a turntable. A second motor is fixedly installed in the middle of one side of the turntable, and a threaded rod is fixedly connected to the output end of the second motor. A connector is threaded onto the outer surface of the threaded rod, and a grinding head is rotatably connected to one end of the connector.
[0010] As a preferred technical solution of this application, the belt drive includes a large pulley, a small pulley and a belt. One side of the large pulley is fixedly connected to the output end of the first motor. There are two small pulleys, and the outer surfaces of the two small pulleys and the large pulley are rotatably connected to the inside of the belt.
[0011] As a preferred technical solution of this application, a second rotating rod is fixedly connected to one side of one of the small pulleys, a quick-release chuck is fixedly connected to one end of the second rotating rod, an operating head is provided on one side of the quick-release chuck, and one side of the small pulley is fixedly connected to the other end of the first rotating rod.
[0012] As a preferred technical solution of this application, the clamping assembly includes a stand, the lower surface of which is fixedly connected to one side of the upper surface of the table, a third cylinder is fixedly connected to the upper surface of the stand, an upper pressure plate is fixedly connected to the bottom end of the third cylinder, and a lower template is fixedly connected to the inner side of the stand.
[0013] As a preferred technical solution of this application, the moving component includes a horizontal slide bar, the outer surface of which is slidably connected to the interior of the lower surface of the mounting box, a mounting plate is fixedly connected to the lower surface of the horizontal slide bar, a sliding block is fixedly connected to the lower surface of the mounting plate, a vertical slide bar is slidably connected to the interior of the sliding block, and the lower surface of the vertical slide bar is fixedly connected to the other side of the upper surface of the table.
[0014] As a preferred technical solution of this application, a vertical rod is fixedly connected to the upper surface of the table body at the edge of the first cylinder, and a control box is fixedly installed at the top of the vertical rod.
[0015] (III) Beneficial Effects
[0016] 1. Through the set grinding component, the threaded rod can drive the grinding head to contact the inner or outer wall of the pipe. Then, the first motor can drive the grinding head to rotate in a circle along the pipe wall to grind the pipe wall, remove the burrs at the pipe opening and grind it smooth. This can effectively avoid affecting the quality of subsequent hole expansion and contraction, thereby avoiding deviations in hole size and scratches or cracks on the inner surface of the hole groove. This ensures the sealing of its assembly with other components and prevents leakage.
[0017] 2. By using the first cylinder, the second cylinder, and the moving component, the position between the grinding head and the operating head can be changed to ensure alignment with the pipeline. At the same time, this achieves automated operation, reduces manual intervention, minimizes processing errors, and ensures processing quality. Attached Figure Description
[0018] Figure 1 A schematic diagram of a pipe expansion and reduction machine for industrial air conditioning production.
[0019] Figure 2 A schematic diagram of the mounting box in a pipe expansion and reduction machine for industrial air conditioning production.
[0020] Figure 3 A schematic diagram of the belt drive component in a pipe expansion and reduction machine for industrial air conditioning production.
[0021] Figure 4 A schematic diagram of the upper pressure plate in a pipe expansion and reduction machine for industrial air conditioning production.
[0022] Figure 5 for Figure 3 Enlarged view of the structure at point A in the middle.
[0023] In the picture:
[0024] 1. Table body; 2. First cylinder; 3. Mounting box; 4. Second cylinder; 5. First motor; 6. Belt drive component; 7. First rotating rod; 8. Turntable; 9. Second motor; 10. Threaded rod; 11. Connector; 12. Grinding head; 13. Second rotating rod; 14. Quick clamp; 15. Operating head; 16. Stand; 17. Third cylinder; 18. Upper pressure plate; 19. Lower template; 20. Horizontal slide bar; 21. Mounting plate; 22. Sliding block; 23. Vertical slide bar. Detailed Implementation
[0025] 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.
[0026] This utility model provides a pipe expansion and reduction machine for industrial air conditioning production, such as... Figures 1-5 As shown, the pipe expansion and reduction machine for industrial air conditioning production includes a table body 1. A first cylinder 2 is fixedly installed at the edge of the upper surface of the table body 1. The output end of the first cylinder 2 is fixedly connected to a mounting box 3. A second cylinder 4 is fixedly connected to one side of the mounting box 3. A first motor 5 is fixedly installed on the other side of the mounting box 3. A belt drive component 6 is fixedly connected to the output end of the first motor 5. A grinding component is fixedly connected to one side of the belt drive component 6. A clamping component is fixedly connected to one side of the upper surface of the table body 1. A moving component is slidably connected to the lower surface of the mounting box 3.
[0027] The grinding assembly includes a first rotating rod 7, one end of which is fixedly connected to one side of a belt drive component 6, and the other end of which is fixedly connected to a turntable 8. A second motor 9 is fixedly mounted in the middle of one side of the turntable 8, and a threaded rod 10 is fixedly connected to the output end of the second motor 9. A connector 11 is threaded onto the outer surface of the threaded rod 10, and a grinding head 12 is rotatably connected to one end of the connector 11. When an external power source starts the second motor 9, it drives the threaded rod 10 to rotate, thereby adjusting the position of the connector 11 so that the grinding head 12 contacts the inner or outer wall of the pipe. Upon contact, the external power supply starts the first motor 5, which drives the first rotating rod 7 to rotate via the belt drive component 6. The turntable 8 rotates accordingly. Since the grinding head 12 is located on one side of the turntable 8, it can rotate in a ring along the pipe wall to grind the inner or outer wall of the pipe, removing burrs at the pipe opening and smoothing it. This effectively avoids affecting the quality of subsequent hole expansion and contraction, thus preventing deviations in hole size and scratches or cracks on the inner surface of the hole groove. This ensures the sealing of the assembly with other components and prevents leakage.
[0028] The belt drive component 6 includes a large pulley, a small pulley, and a belt. One side of the large pulley is fixedly connected to the output end of the first motor 5. There are two small pulleys. The outer surfaces of the two small pulleys and the large pulley are rotatably connected to the inside of the belt. The large pulley drives the small pulleys to rotate via the belt to realize the transmission of power. It can also drive the grinding head 12 and the operating head 15 to rotate at the same time, thereby reducing the number of power sources and optimizing the overall structure.
[0029] One side of a small pulley is fixedly connected to a second rotating rod 13, and one end of the second rotating rod 13 is fixedly connected to a quick-release chuck 14. An operating head 15 is provided on one side of the quick-release chuck 14, and one side of the other small pulley is fixedly connected to the other end of the first rotating rod 7. The operating head 15 can be a reamer or a shrinker, and can be easily replaced by the quick-release chuck 14 as needed. The second rotating rod 13 can drive the operating head 15 to rotate through the quick-release chuck 14 to realize the reaming or shrinking operation of the pipeline.
[0030] The clamping assembly includes a stand 16, the lower surface of which is fixedly connected to one side of the upper surface of the table body 1. A third cylinder 17 is fixedly connected to the upper surface of the stand 16, and an upper pressure plate 18 is fixedly connected to the bottom end of the third cylinder 17. A lower template 19 is fixedly connected to the inner side of the stand 16. The pipe is placed on the upper surface of the lower template 19, and then the third cylinder 17 is activated to drive the lower template 19 to move down, thereby fixing the pipe.
[0031] The moving component includes a horizontal slide bar 20, the outer surface of which is slidably connected to the interior of the lower surface of the mounting box 3. A mounting plate 21 is fixedly connected to the lower surface of the horizontal slide bar 20, and a sliding block 22 is fixedly connected to the lower surface of the mounting plate 21. A vertical slide bar 23 is slidably connected to the interior of the sliding block 22. The lower surface of the vertical slide bar 23 is fixedly connected to the other side of the upper surface of the table body 1. The horizontal slide bar 20 allows the mounting box 3 to slide left and right on its outer surface so that the operating head 15 or the grinding head 12 can contact the inner or outer wall of the pipe. The mounting plate 21 slides back and forth on the outer surface of the vertical slide bar 23 via the sliding block 22, which allows the position between the grinding head 12 and the operating head 15 to be changed, ensuring that they can be aligned with the pipe. At the same time, it enables automated operation, reduces manual intervention, reduces processing errors, and ensures processing quality.
[0032] A vertical rod is fixedly connected to the upper surface of the table body 1 at the edge of the first cylinder 2, and a control box is fixedly installed at the top of the vertical rod.
[0033] Working steps: First, place the pipe on the upper surface of the lower template 19, then start the third cylinder 17 to move the lower template 19 down, which can fix the pipe. Next, start the second cylinder 4 to make the mounting box 3 slide left and right on the outer surface of the horizontal slide bar 20 so that the grinding head 12 overlaps with the opening of the pipe. Then, start the second motor 9 with an external power supply to drive the threaded rod 10 to rotate, so as to adjust the position of the connector 11 and make the grinding head 12 contact the inner or outer wall of the pipe. Next, start the first motor 5 with an external power supply to drive the first rotating rod 7 to rotate via the belt drive 6. The turntable 8 rotates accordingly, so as to drive the grinding head 12 to rotate in a ring along its pipe wall to grind the inner or outer wall of the pipe. Finally, start the first cylinder 2 to make the mounting plate 21 slide back and forth on the outer surface of the vertical slide bar 23 via the sliding block 22, so as to change the position between the grinding head 12 and the operating head 15. Similarly, the first motor 5 drives the operating head 15 to enlarge or shrink the hole of the pipe.
[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A pipe hole expanding and reducing machine for industrial air conditioner production, comprising a table body (1), characterized in that: The edge of the upper surface of the table body (1) is fixedly connected with a first air cylinder (2), the output end of the first air cylinder (2) is fixedly connected with a mounting box (3), one side of the mounting box (3) is fixedly connected with a second air cylinder (4), the other side of the mounting box (3) is fixedly connected with a first motor (5), the output end of the first motor (5) is fixedly connected with a belt transmission (6), one side of the belt transmission (6) is fixedly connected with a polishing assembly, one side of the upper surface of the table body (1) is fixedly connected with a clamping assembly, and the lower surface of the mounting box (3) is slidably connected with a moving assembly. The polishing assembly comprises a first rotating rod (7), one end of the first rotating rod (7) is fixedly connected with one side of the belt transmission (6), the other end of the first rotating rod (7) is fixedly connected with a rotating disc (8), the middle of one side of the rotating disc (8) is fixedly connected with a second motor (9), the output end of the second motor (9) is fixedly connected with a threaded rod (10), the outer surface of the threaded rod (10) is threadedly connected with a connecting piece (11), and one end of the connecting piece (11) is rotatably connected with a polishing head (12).
2. The pipe reaming and necking machine for industrial air conditioner production of claim 1, wherein: The belt transmission (6) comprises a large pulley, a small pulley and a belt, one side of the large pulley is fixedly connected with the output end of the first motor (5), the number of the small pulleys is two, and the outer surfaces of the two small pulleys and the large pulley are rotatably connected in the belt.
3. The pipe reaming and necking machine for industrial air conditioner production of claim 2, wherein: One side of one of the small pulleys is fixedly connected with a second rotating rod (13), one end of the second rotating rod (13) is fixedly connected with a quick chuck (14), one side of the quick chuck (14) is provided with an operating head (15), and one side of the other small pulley is fixedly connected with the other end of the first rotating rod (7).
4. The pipe reaming and necking machine for industrial air conditioner production of claim 1, wherein: The clamping assembly comprises a stand (16), the lower surface of the stand (16) is fixedly connected with one side of the upper surface of the table body (1), the upper surface of the stand (16) is fixedly connected with a third air cylinder (17), the bottom end of the third air cylinder (17) is fixedly connected with an upper pressing plate (18), and the inner side of the stand (16) is fixedly connected with a lower die plate (19).
5. The pipe reaming and necking machine for industrial air conditioner production of claim 1, wherein: The moving assembly comprises a horizontal sliding rod (20), the outer surface of the horizontal sliding rod (20) is slidably connected in the inner side of the lower surface of the mounting box (3), the lower surface of the horizontal sliding rod (20) is fixedly connected with a mounting plate (21), the lower surface of the mounting plate (21) is fixedly connected with a sliding block (22), the inner side of the sliding block (22) is slidably connected with a vertical sliding rod (23), and the lower surface of the vertical sliding rod (23) is fixedly connected with the other side of the upper surface of the table body (1).
6. The pipe reaming and sizing machine for industrial air conditioner production of claim 1, wherein: The edge of the upper surface of the table body (1) is fixedly connected with a vertical rod, and the top end of the vertical rod is fixedly connected with a control box.