Portable catheter bending device and catheter bending method

Abstract

The invention belongs to the technical field of machining, and relates to a portable catheter bending device and a catheter bending method. After the portable catheter bending device is used, the portability of the bending device is obviously improved, the bending implementation operation is simplified, the site handling efficiency of catheter faults is obviously improved, the production cost is reduced, and the portable catheter bending device can adapt to complex and changeable working environments.

Description

Technical Field

[0001] This invention belongs to the field of mechanical processing technology and relates to a portable catheter bending device and a method for bending catheters. Background Technology

[0002] In the modern aerospace industry, duct bending is a crucial manufacturing and maintenance process. Aerospace ducts are widely used in critical components such as aircraft hydraulic, fuel, and pneumatic systems, and their shape and precision directly impact aircraft performance and safety. Traditional duct bending equipment is typically bulky, complex to operate, and requires significant installation space and electrical or hydraulic system support, making it difficult to meet the demands for portability, efficiency, and "plug-and-play" functionality. While common manual duct bending tools are portable, they are inefficient, require significant operational effort, necessitate considerable experience, and struggle to guarantee bending precision, especially when working with hard, high-strength metal tubing, making it difficult to achieve high-quality bending.

[0003] In recent years, with the development of power tool technology, some electric pipe bending machines have gradually entered the market. However, most of these devices still have the following problems: They are relatively large, and traditional electric pipe bending machines usually require fixed installation, failing to meet portability requirements; they are complex to operate, requiring complex settings, programming, and adjustments, making it difficult to achieve rapid bending operations; their applicability is limited, requiring the use of molds of specific materials and specifications to bend specific types of materials or pipe diameters, making it difficult to achieve different bending radii for the same conduit, resulting in poor equipment adaptability; and they lack safety, with a risk of pipe slippage due to insufficient clamping force during operation.

[0004] Furthermore, during on-site maintenance, the replacement of damaged conduits requires rapid on-site handling. Traditional conduit bending equipment lacks portability, forcing maintenance personnel to transport damaged parts to the OEM's conduit production workshop for repair or replacement. This not only increases maintenance costs but may also lead to extended downtime, affecting normal aircraft takeoff and training. Summary of the Invention

[0005] Based on the above problems, this invention proposes a portable catheter bending device that is flexible in operation and reliable in precision. It aims to solve the problems of poor portability and complex operation in the prior art, improve the efficiency of on-site handling of catheter failures, reduce production costs, and adapt to complex and ever-changing working environments.

[0006] To address the problems and risks associated with existing pipe bending equipment and methods, this invention provides a compact, easy-to-operate, portable electric pipe bending device. This device can quickly bend various types of pipes, offering high efficiency, high precision, and excellent portability.

[0007] According to one aspect of this application, a portable conduit bending device is provided, comprising a front cover 1, a clamp 2, a pressure roller 3, a small wheel 4, a roller adjusting nut 5, a roller bracket 6, a spring 7, a locking handle 8, a handle positioning pin 9, a roller slot 10, a roller bracket positioning pin 11, a tail fixing roller 12, a bending die positioning pin 13, a bending die 14, a clamp positioning pin 15, a bolt 16, a drag handle 17, a transmission chamber 18, an emergency brake button 19, a power button 20, a controller socket 21, a power socket 22, a load-bearing bracket 23, a roller bracket positioning hole 24, a motor chamber 25, a digital display controller 26, a large gear 27, a transmission shaft 28, a motor 29, and a small gear 30.

[0008] The front cover 1 is fastened to the transmission compartment 18 by eight bolts 16, and the front cover 1 has a round hole.

[0009] The front cover 1 ensures the normal and effective transmission of the large gear 27.

[0010] The clamp 2 is installed and fixed by the clamp positioning pin 15, and the pressure roller 3 is installed and positioned by the roller slot 10. The opening size of the roller slot 10 ensures that the pressure roller 3 can be freely inserted and pulled out in the roller slot 10.

[0011] The outer side of the small wheel 4 is made of rubber, and the inner hub is made of metal. It is installed on both sides of the load-bearing bracket 23. When the portable conduit bending device is dragged, the small wheel 4 can rotate freely.

[0012] The roller adjusting nut 5 is installed on the roller bracket 6 and passes through the roller bracket 6. The height position of the pressure roller 3 installed on the roller bracket 6 can be adjusted by turning the nut to adjust the length of the roller adjusting nut 5 passing through the roller bracket 6.

[0013] The locking handle 8 is mounted on the bottom of the roller bracket 6 via a handle positioning pin 9, and the locking handle 8 can rotate freely around the handle positioning pin 9.

[0014] The other end of the handle positioning pin 9 is connected to the roller slot 10. When the locking handle 8 is raised or lowered, it can drive the roller slot 10 to rotate.

[0015] The roller bracket positioning pin 11 is inserted into the roller bracket positioning hole 24 on the side of the load-bearing bracket 23. Under the drive of the locking handle 8, the roller bracket 6 can rotate clockwise around the roller bracket positioning pin 11.

[0016] The tail-end fixing roller 12 is installed on the right side of the roller bracket 6, and together with the pressure roller 3, it serves to fix the curved guide tube. Figure 3 As shown.

[0017] The large gear 27 and the bending mold 14 are fixedly connected by the transmission shaft 28. Rotating the large gear 27 drives the bending mold 14 to rotate through the transmission shaft 28.

[0018] The power button 20, power socket 22, controller socket 21 and emergency brake button 19 are distributed on one side of the transmission compartment 18, with the emergency brake button 19 located at a higher position for easy and quick pressing in case of an emergency.

[0019] The motor 29 is installed in the motor compartment 25. The main shaft of the motor 29 is connected to the pinion 30. After the motor 29 is started, it drives the pinion 30 to rotate. The pinion 30 is connected to the large gear 27 by meshing and drives the large gear 27 to rotate.

[0020] The drag handle 17 is connected to the transmission compartment 18 and the motor compartment 25 by welding. The drag handle 17 can provide support when the portable conduit bending device is laid flat.

[0021] The upper part of the digital display controller 26 is an LED display screen with digital display function;

[0022] The digital display controller 26 integrates eight buttons, which control eight actions of the bending device: bending, 1° bending, reverse bending unloading, zeroing, bending storage, automatic bending, front-to-back adjustment of pressure roller 3, and up-to-down adjustment of pressure roller 3. Figure 5 As shown.

[0023] The specifications of the clamp 2, pressure roller 3, tail fixing roller 12, and bending die 14 are the same as those of the guide tube to be bent, which can ensure that the guide tube to be bent is pressed tightly.

[0024] The front cover 1, clamp 2, pressure roller 3, roller adjusting nut 5, roller bracket 6, spring 7, locking handle 8, handle positioning pin 9, roller slot 10, roller bracket positioning pin 11, tail fixing roller 12, bending die positioning pin 13, bending die 14, drag handle 17, transmission chamber 18, motor chamber 25, large gear 27, transmission shaft 28, motor 29, and small gear 30 are all made of metal.

[0025] The emergency brake button 19, power button 20, power socket 22, controller socket 21, and digital display controller 26 are all made of non-metallic materials.

[0026] According to another aspect of this application, a method for bending a catheter is provided, employing the aforementioned portable catheter bending device;

[0027] Includes the following steps:

[0028] After selecting the required clamp 2 and bending die 14 according to the specifications of the conduit to be bent, install the conduit to be bent on the portable conduit bending device and insert the bending die positioning pin 13 for fixation; lift the locking handle 8 upwards, causing the roller slot 10 to tilt to the right, insert the pressure roller 3 into the roller slot 10, and then press down the locking handle 8, changing the pressure roller 3 from a rightward tilt to a vertical position; insert the tail fixing roller 12 into the right side of the roller bracket 6; press the zeroing button on the digital display controller 26, and the bending die 14 rotates to the initial position; insert the conduit to be bent to the left from the right side of the portable conduit bending device along the gap between the pressure roller 3 and the bending die 14; rotate the roller adjusting nut 5 to adjust the position of the roller bracket 6 and indirectly adjust the gap between the pressure roller 3 and the bending die 14. The pressure roller 3 ensures that the guide tube to be bent is held, supported, and fed axially. Press the power button 20, and after the LED display of the digital display controller 26 lights up, press the bending button on the digital display controller 26. The motor 29 starts and drives the bending mold 14 to rotate clockwise around the transmission shaft 28 through the small gear 30 and the large gear 27. The guide tube to be bent is deformed under the combined action of the clamp 2, the pressure roller 3, the tail fixing roller 12, and the bending mold 14. After the bending is completed, rotate the roller adjusting nut 5 to lower the height of the pressure roller 3 and increase the gap between it and the bending mold 14. Remove the clamp 2, lift the locking handle 8, and tilt the pressure roller 3 to remove the formed guide tube. Press the zero button on the digital display controller 26 to return the bending mold 14 to the initial position.

[0029] The advantages of this application are:

[0030] The use of a portable catheter bending device significantly improves the portability of the bending device, simplifies the bending operation, significantly improves the efficiency of on-site handling of catheter failures, reduces production costs, and can adapt to complex and ever-changing working environments. Attached Figure Description

[0031] Figure 1 Front view of portable catheter bending device.

[0032] Figure 2 Top view of a portable catheter bending device.

[0033] Figure 3 Axial view of a portable catheter bending device.

[0034] Figure 4 Right side view of the portable catheter bending device.

[0035] Figure 5 Left view of the portable catheter bending device.

[0036] In the diagram: 1. Front cover, 2. Clamp, 3. Pressure roller, 4. Small wheel, 5. Roller adjusting nut, 6. Roller bracket, 7. Spring, 8. Locking handle, 9. Handle positioning pin, 10. Roller slot, 11. Roller bracket positioning pin, 12. Tail fixing roller, 13. Bending die positioning pin, 14. Bending die, 15. Clamp positioning pin, 16. Bolt, 17. Drag handle, 18. Transmission chamber, 19. Emergency brake button, 20. Power button, 21. Controller socket, 22. Power socket, 23. Load-bearing bracket, 24. Roller bracket positioning hole, 25. Motor chamber, 26. Digital display controller, 27. Large gear, 28. Drive shaft, 29. Motor, 30. Small gear. Detailed Implementation

[0037] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0038] Example 1

[0039] Before bending the conduit using a bending device, the conduit end face should be deburred, and both the inner and outer surfaces of the conduit should be thoroughly cleaned to remove metal shavings and other impurities, and then dried with compressed air. Before inserting the conduit into the bending device, apply a generous amount of lubricating oil to the outer surface to prevent scratches from the rollers. The surface of the bending die should be checked to ensure it is smooth and clean; the bending die should be regularly wiped clean and maintained with acetone or an equivalent cleaning agent. The roller components on the pressure roller and the tail-end fixed roller should be checked to ensure they rotate freely.

[0040] Step 1: Select the required bending die and install it on the bending device, then insert the locating pin to secure the bending die. Connect the power supply, press the power button to start the bending device, then press the bending button on the digital display controller to check if the bending die rotates flexibly. Finally, press the zeroing button to ensure the bending die returns to its initial position.

[0041] Step 2: Lift the locking handle, rotate the roller slot to insert the pressure roller of the appropriate size. Press down the locking handle; the pressure roller changes from an inclined position to a vertical position and engages with the bending die. Install the tail fixing roller of the appropriate size on the right side of the roller bracket.

[0042] Step 3: Push the conduit from the side of the tail fixing roller to the left, passing it over the pressure roller, and place the conduit on top of the pressure roller and the tail fixing roller. Use the locating pin to install the fixing clamp. The clamp must secure the tube to the bending die and provide the clamping force required for the tube's bending deformation. The conduit should protrude approximately 30-40mm from the clamp to ensure stable clamping.

[0043] Step 4: Rotate the two roller adjusting nuts clockwise to raise the roller bracket height and adjust the gap between the guide tube placed on the pressure roller and the bending die. A small gap causes excessive pressure between the guide tube and the bending die, resulting in out-of-tolerance ellipticity and necking of the guide tube's bent section. A large gap prevents proper control of the guide tube by the bending die and pressure roller during bending, leading to scratches and wrinkles on the bent section.

[0044] Step 5: Press the power button to start the conduit bending device. The LED display of the digital controller will light up at this time. Since the bending mold is in the initial bending position, the LED display reading is 0, and the device enters the bending preparation state. The operation of the bending device can be controlled by pressing the buttons on the digital controller.

[0045] Step 6: Press and hold the bending button. The bending die will start to rotate clockwise to bend the guide tube. When a small angle bend is required, press the 1° bending button. Each press of the button will rotate the bending die clockwise by 1°. When the reverse bend unload button is pressed, the bending die will rotate counterclockwise, and the guide tube will bend in the opposite direction. After bending is complete, press the zeroing button to return the bending die to the initial bending position. When the previous bending action needs to be repeated multiple times, press the bending storage button after the previous bending is complete to store the bending program in the bending device. When the bending program stored in the bending device needs to be repeated, press the automatic bending button, and the bending device will repeat the bending action once.

[0046] Step 7: After the conduit bending is complete, rotate the adjusting nut counterclockwise to increase the gap between the pressure roller and the bending die. Remove the clamp and take the formed conduit out from the left side of the bending device. Check the conduit forming quality according to relevant standards and specifications. In case of emergency during the bending process, press the emergency stop button to temporarily halt the equipment operation.

[0047] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions made by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A portable catheter bending device, characterized in that, It includes a front cover (1), a clamp (2), a pressure roller (3), a small wheel (4), a roller adjusting nut (5), a roller bracket (6), a spring (7), a locking handle (8), a handle positioning pin (9), a roller slot (10), a roller bracket positioning pin (11), a tail fixing roller (12), a bending die positioning pin (13), a bending die (14), a clamp positioning pin (15), a bolt (16), a drag handle (17), a transmission compartment (18), an emergency brake button (19), a power button (20), a controller socket (21), a power socket (22), a load-bearing bracket (23), a roller bracket positioning hole (24), a motor compartment (25), a digital display controller (26), a large gear (27), a drive shaft (28), a motor (29), and a small gear (30).

2. The portable catheter bending device according to claim 1, characterized in that, The front cover (1) is fastened to the transmission compartment (18) by eight bolts (16), and the front cover (1) has a round hole; The clamp (2) is installed and fixed by the clamp positioning pin (15), and the pressure roller (3) is installed and positioned by the roller slot (10). The opening size of the roller slot (10) ensures that the pressure roller (3) can be freely inserted and pulled out in the roller slot (10).

3. The portable catheter bending device according to claim 1, characterized in that, The outer side of the small wheel (4) is made of rubber, and the inner hub is made of metal. It is installed on both sides of the load-bearing bracket (23). When the portable conduit bending device is dragged, the small wheel (4) can rotate freely. The roller adjusting nut (5) is installed on the roller bracket (6) and passes through the roller bracket (6). The height position of the pressure roller (3) installed on the roller bracket (6) is adjusted by turning the nut to adjust the length of the roller adjusting nut (5) passing through the roller bracket (6).

4. The portable catheter bending device according to claim 1, characterized in that, The locking handle (8) is installed at the bottom of the roller bracket (6) via a handle positioning pin (9), and the locking handle (8) can rotate freely around the handle positioning pin (9); The other end of the handle positioning pin (9) is connected to the roller slot (10). When the locking handle (8) is raised or lowered, it can drive the roller slot (10) to rotate.

5. The portable catheter bending device according to claim 1, characterized in that, The roller bracket positioning pin (11) is inserted into the roller bracket positioning hole (24) on the side of the load-bearing bracket (23). Under the drive of the locking handle (8), the roller bracket (6) can rotate clockwise around the roller bracket positioning pin (11). The tail fixing roller (12) is installed on the right side of the roller bracket (6) and together with the pressure roller (3) serves to fix the curved guide tube.

6. The portable catheter bending device according to claim 1, characterized in that, The large gear (27) and the bending die (14) are fixedly connected by a transmission shaft (28). Rotating the large gear (27) will drive the bending die (14) to rotate through the transmission shaft (28). The power button (20), power socket (22), controller socket (21) and emergency brake button (19) are located on one side of the transmission compartment (18), with the emergency brake button (19) located at a higher position for easy and quick pressing in case of an emergency. The motor (29) is installed in the motor compartment (25). The main shaft of the motor (29) is connected to the pinion (30). After the motor (29) is started, it drives the pinion (30) to rotate. The pinion (30) is connected to the large gear (27) by meshing and drives the large gear (27) to rotate. The drag handle (17) is connected to the transmission compartment (18) and the motor compartment (25) by welding. The drag handle (17) can provide support when the portable conduit bending device is laid flat.

7. The portable catheter bending device according to claim 1, characterized in that, The upper part of the digital display controller (26) is an LED display screen with digital display function; The digital display controller (26) integrates eight buttons, which control eight actions of the bending device, including bending, 1° bending, reverse bending unloading, zeroing, bending storage, automatic bending, front and back adjustment of pressure roller (3), and up and down adjustment of pressure roller (3).

8. The portable catheter bending device according to claim 1, characterized in that, The specifications of the clamp (2), pressure roller (3), tail fixing roller (12), and bending mold (14) are the same as those of the guide tube to be bent, which can ensure that the guide tube to be bent is pressed tightly.

9. The portable catheter bending device according to claim 1, characterized in that, The front cover (1), clamp (2), pressure roller (3), roller adjusting nut (5), roller bracket (6), spring (7), locking handle (8), handle positioning pin (9), roller slot (10), roller bracket positioning pin (11), tail fixing roller (12), bending mold positioning pin (13), bending mold (14), drag handle (17), transmission chamber (18), motor chamber (25), large gear (27), transmission shaft (28), motor (29), and small gear (30) are made of metal. The emergency brake button (19), power button (20), power socket (22), controller socket (21) and digital display controller (26) are all made of non-metallic materials.

10. A method for bending a catheter, characterized in that, The portable catheter bending device according to any one of claims 1 to 9 is used; Includes the following steps: After selecting the required clamp (2) and bending die (14) according to the specifications of the conduit to be bent, install the conduit to be bent on the portable conduit bending device and insert the bending die positioning pin (13) for fixation; lift the locking handle (8) upwards, drive and tilt the roller slot (10) to the right, insert the pressure roller (3) into the roller slot (10), and then press down the locking handle (8), the pressure roller (3) changes from a rightward tilt to a vertical position; insert the tail fixing roller (12) on the right side of the roller bracket (6); press the zeroing button on the digital display controller (26), the bending die (14) rotates to the initial position; insert the conduit to be bent to the left from the right side of the portable conduit bending device along the gap between the pressure roller (3) and the bending die (14); rotate the roller adjusting nut (5) to correct the posture of the roller bracket (6) and indirectly adjust the gap between the pressure roller (3) and the bending die (14), ensuring The pressure roller (3) serves to hold, support, and roll the material along the axial direction of the guide tube to be bent. Press the power button (20), and after the LED display of the digital display controller (26) lights up, press the bending button on the digital display controller (26). The motor (29) starts and drives the bending mold (14) to rotate clockwise around the transmission shaft (28) through the rotation of the small gear (30) and the large gear (27). The guide tube to be bent deforms under the combined action of the clamp (2), the pressure roller (3), the tail fixing roller (12), and the bending mold (14). After the bending is completed, rotate the roller adjusting nut (5) to lower the height of the pressure roller (3) and increase the gap between it and the bending mold (14). Remove the clamp (2), lift the locking handle (8), and tilt the pressure roller (3) to remove the formed guide tube. Press the zero button on the digital display controller (26) to return the bending mold (14) to the initial position.

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