Automatic flaring and nut mounting device for machine connecting pipe
By designing a combined structure of rotating block, threaded ring, tapered column and clamp, the problem of loose connection caused by pipe nut due to differences in pipe port size was solved, achieving stable connection and convenient disassembly.
Patent Information
- Application Number
- CN202520149949.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In the prior art, the connection of the pipe nut is prone to loosening due to differences in pipe port dimensions.
Design an automatic flaring and nut-fitting device for connecting pipes. Through a combination structure of rotating block, threaded ring, conical column and clamp, it realizes the locking and adjustment of the pipe port to ensure that the nut fits tightly.
This effectively avoids loosening of the connection due to size differences, improving the stability of the connection and the ease of disassembly.
Smart Images

Figure CN223762587U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nut flaring technology, and in particular to an automatic flaring and nut-attaching device for connecting pipes. Background Technology
[0002] In modern industry and machinery, pipe nuts are a common type of fastener widely used in various pipe connections and fixations. Traditional pipe nuts are typically tightened directly onto the pipe to ensure a tight and stable connection.
[0003] In existing technologies, nuts are often installed using standard threaded connections, which requires high dimensional accuracy at the pipe ends. In some practical applications, due to manufacturing or processing errors, there are certain dimensional differences at the pipe ends, causing the nuts to not fit tightly and resulting in loose connections.
[0004] Therefore, this utility model provides an automatic flaring and nut-attaching device for connecting pipes. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatic flaring and nut-attaching device for connecting pipes.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic flaring and nut-attaching device for connecting pipes, comprising;
[0007] pipeline;
[0008] A connecting assembly; the connecting assembly includes a connecting sleeve that is slidably connected inside the pipe, a rotating block that is fixedly connected to the outside of the connecting sleeve, and a threaded ring that is fixedly connected to the outside of the connecting sleeve.
[0009] A flared locking assembly is provided, wherein an auxiliary telescopic component is fixedly connected to the outer side of the flared locking assembly; the flared locking assembly includes a bolt threaded onto a connecting collar, a rotating ring fixedly connected to the bottom end of the bolt, a tapered column rotatably connected to the bottom end of the rotating ring, a flared locking groove being provided inside the pipe, and a locking seat being slidably connected to the flared locking groove.
[0010] The technical effect of adopting the above technical solution is that it can be locked according to the actual size of the pipe port, ensuring that the nut can fit tightly and effectively avoiding the problem of loose connection caused by size difference.
[0011] In a preferred embodiment, the auxiliary telescopic assembly includes a rotating seat fixedly connected to the outside of the conical column, a connecting rod rotatably connected to the outside of the rotating seat, and a rotating column rotatably connected to the end of the connecting rod away from the rotating seat.
[0012] The technical effect of adopting the above technical solution is that it enables precise control of the flared groove, allowing the operator to easily make manual adjustments to adapt to pipe materials of different thicknesses.
[0013] In a preferred embodiment, the outer side of the conical column is provided with a fault-tolerant groove, and the outer side of the connecting rod is slidably connected to the fault-tolerant groove.
[0014] The technical effect of adopting the above technical solution is that the design of the fault-tolerant groove prevents the connecting rod from getting stuck when the conical column retracts.
[0015] In a preferred embodiment, the bottom end of the tapered column contacts the bottom end of the card holder.
[0016] The technical effect of adopting the above technical solution is that the conical column can evenly distribute the force when subjected to pressure, thereby pushing the card holder outward.
[0017] In a preferred embodiment, the two ends of the rotating column are fixedly connected to the inside of the card holder.
[0018] The technical effect of adopting the above technical solution is that when the rotating column is subjected to external force, it can effectively transmit the force to the card holder, thereby guiding the movement of the card holder.
[0019] In a preferred embodiment, the bottom end of the bolt is provided with an adjustment groove.
[0020] The technical effect of adopting the above technical solution is that it facilitates fine-tuning of the bolts during installation.
[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0022] This invention utilizes a rotating block to drive a threaded ring, achieving an initial connection between the ring and the pipe. Subsequently, a tool is inserted into the adjustment groove, driving the bolt to rotate. This generates pressure, causing the ring to move downwards, creating a linear movement effect and engaging the retainer with the flared groove. The interaction between the bolt rotation, the ring, and the conical column ensures a stable fastening. During disassembly, rotating the bolt in the opposite direction moves the conical column upwards, causing the connecting rod and rotating column to move upwards as well. The retainer retracts without pressure, completing the disassembly. This design, through the cooperation of the rotating block and the threaded ring, enables an initial connection to the pipe. Secondly, by inserting a tool into the adjustment groove and rotating the adjusting bolt, the position and angle of the connecting ring can be further adjusted to accommodate pipe ports of different sizes. Finally, the design of the conical column and retainer allows for the fixing and sealing of the connecting ring, adapting to pipe ports of different sizes and reducing loosening caused by differences in pipe port dimensions. Furthermore, when the bolt is rotated in the opposite direction, the conical column and the linkage structure allow the retainer to easily retract, eliminating the need for additional complex tools or excessive operations, greatly improving the convenience of disassembly and maintenance efficiency. Attached Figure Description
[0023] Figure 1 A perspective view of an automatic flaring and nut-attaching device for a connecting pipe provided by this utility model;
[0024] Figure 2 A schematic diagram of the flaring groove structure of an automatic flaring and nut-attaching device for connecting pipes provided by this utility model;
[0025] Figure 3 A schematic diagram of the flaring engagement assembly of an automatic flaring and nut-attaching device for a connecting pipe provided by this utility model;
[0026] Figure 4 A schematic diagram of the auxiliary telescopic component structure of an automatic flaring and nut-attaching device for connecting pipes provided by this utility model.
[0027] Legend:
[0028] 1. Pipeline;
[0029] 2. Connecting assembly; 21. Connecting collar; 22. Rotary block; 23. Threaded ring;
[0030] 3. Flared engagement assembly; 31. Bolt; 32. Adjustment groove; 33. Rotary ring; 34. Tapered column; 35. Card holder; 36. Flared slot;
[0031] 4. Auxiliary telescopic assembly; 41. Rotating seat; 42. Connecting rod; 43. Rotating column; 44. Fault-tolerant groove. Detailed Implementation
[0032] 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.
[0033] like Figure 1 - Figure 2 As shown, this embodiment provides a technical solution: an automatic flaring and nut-attaching device for connecting pipes, comprising;
[0034] Pipeline 1; connecting assembly 2; the connecting assembly 2 includes a connecting sleeve 21 that is slidably connected inside the pipe 1, a rotating block 22 that is fixedly connected to the outside of the connecting sleeve 21, and a threaded ring 23 that is fixedly connected to the outside of the connecting sleeve 21.
[0035] Pipe 1 is the foundation of the entire device, used for connecting and transporting fluid. Connecting ring 21 secures rotating block 22 and threaded ring 23 to its outer side. Rotating block 22 drives connecting ring 21 to rotate. Threaded ring 23, designed to work in conjunction with rotating block 22, provides the basic connection to pipe 1.
[0036] like Figure 1 - Figure 4 As shown, the flared engagement assembly 3 includes a bolt 31 threaded onto the connecting sleeve 21, an adjustment groove 32 at the bottom end of the bolt 31, a rotating ring 33 fixedly connected to the bottom end of the bolt 31, a tapered column 34 rotatably connected to the bottom end of the rotating ring 33, a flared groove 36 inside the pipe 1, a retainer 35 slidably connected to the flared groove 36, and the bottom end of the tapered column 34 contacting the bottom end of the retainer 35.
[0037] The use of bolt 31 provides a fixing and adjustment mechanism, enabling the entire flared engagement assembly 3 to be stably connected to pipe 1. Adjustment groove 32 is opened at the bottom of bolt 31 to adjust the position of bolt 31 to adapt to different connection requirements. The design of the rotating ring 33 allows the conical column 34 to be flexibly adjusted in position. The design of the conical column 34 allows the flared engagement assembly 3 to fit tightly with the flared groove 36 of pipe 1, providing a solid connection point and ensuring the stability of the connection. The flared groove 36 is opened inside pipe 1 for sliding connection of the retaining seat 35.
[0038] An auxiliary telescopic component 4 is fixedly connected to the outer side of the flared locking assembly 3. The auxiliary telescopic component 4 includes a rotating seat 41 fixedly connected to the outer side of the conical column 34. A connecting rod 42 is rotatably connected to the outer side of the rotating seat 41. A rotating column 43 is rotatably connected to the end of the connecting rod 42 away from the rotating seat 41. Both ends of the rotating column 43 are fixedly connected to the inside of the locking seat 35. A fault tolerance groove 44 is provided on the outer side of the conical column 34. The outer side of the connecting rod 42 is slidably connected to the fault tolerance groove 44.
[0039] like Figure 1 , Figure 3 and Figure 4 As shown, the rotating base 41 provides a stable support point, allowing the connecting rod 42 to rotate flexibly, thereby realizing the telescopic function of the auxiliary telescopic assembly 4. The design of the connecting rod 42 allows the rotating column 43 to move with the rotation of the connecting rod 42. The two ends of the rotating column 43 are fixedly connected to the inside of the card seat 35 and connected to the rotation of the connecting rod 42 to realize the telescopic movement of the rotating column 43. The existence of the fault-tolerant groove 44 allows the connecting rod 42 to slide on it, providing a certain fault tolerance space, so that the auxiliary telescopic assembly 4 can adjust its position within a certain range to adapt to different installation errors or slight size differences.
[0040] Working principle: such as Figure 1 - Figure 4 As shown: In use: First, the rotation of the rotating block 22 drives the threaded ring 23 to rotate inside, so that the connecting ring 21 is initially connected to the pipe 1. Then, the adjusting groove 32 is inserted by the tool, which drives the adjusting groove 32 to rotate the bolt 31. The bolt 31 rotates on the connecting ring 21, which in turn drives the bottom rotating ring 33 to move downward. When the rotating ring 33 moves downward, the conical column 34 achieves a linear movement effect through the rotational connection with the rotating ring 33. The bottom end of the conical column 34 and the card seat 35 are designed with a conical surface, so that the conical column 34 moves the card seat 35 outward during the downward pressing process until it engages with the flared card groove 36. When disassembly is required, the bolt 31 is rotated in the opposite direction. The bolt 31 drives the conical column 34 at the bottom end of the rotating ring 33 to move upward. At this time, the rotating seat 41, due to the fixed connection with the conical column 34, drives the connecting rod 42 and the rotating column 43 to move upward, so that the card seat 35 achieves a retraction process without the pressure of the conical column 34.
[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A device for automatic nut expansion on a tube, characterized in that, Include; Pipe (1); Connecting assembly (2); the connecting assembly (2) includes the connecting sleeve ring (21) slidingly connected in the pipe (1), the outer side of the connecting sleeve ring (21) is fixedly connected with the rotating block (22), and the outer side of the connecting sleeve ring (21) is fixedly connected with the threaded ring (23); The flared clamping assembly (3), the outer side of the flared clamping assembly (3) is fixedly connected with the auxiliary telescopic assembly (4); the flared clamping assembly (3) includes the bolt (31) threadedly connected on the connecting sleeve ring (21), the bottom end of the bolt (31) is fixedly connected with the rotating ring (33), the bottom end of the rotating ring (33) is rotatably connected with the tapered column (34), the inside of the pipe (1) is provided with the flared clamping groove (36), and the flared clamping groove (36) is slidingly connected with the clamping seat (35).
2. A device for automatically expanding and screwing a nut on a pipe according to claim 1, characterized in that: The auxiliary telescopic assembly (4) includes the rotating seat (41) fixedly connected to the outer side of the tapered column (34), the outer side of the rotating seat (41) is rotatably connected with the connecting rod (42), and the end, away from the rotating seat (41), of the connecting rod (42) is rotatably connected with the rotating column (43).
3. A device for automatically expanding and screwing a nut on a pipe according to claim 2, characterized in that: The outer side of the tapered column (34) is provided with the fault tolerance groove (44), and the outer side of the connecting rod (42) is slidingly connected on the fault tolerance groove (44).
4. The apparatus according to claim 1, wherein: The bottom end of the tapered column (34) is in contact with the bottom end of the clamping seat (35).
5. The apparatus of claim 2 wherein: The both ends of the rotating column (43) are fixedly connected in the inside of the clamping seat (35).
6. The apparatus of claim 1 wherein: The bottom end of the bolt (31) is provided with the adjusting groove (32).