In-catheter rolling device

Abstract

The application provides a catheter rolling device, which comprises an operation table, a detection ring, a sensor, a control system and a display screen. The first end of the operation table is provided with a first clamp and a second clamp. The first clamp clamps a dilator, and the second clamp clamps a catheter. The second end of the operation table is provided with a motor. A transmission assembly is coaxially arranged on the output shaft of the motor. A transmission cylinder is connected to the output shaft of the motor. A transmission rod is slidingly connected in the transmission cylinder. The transmission rod is provided with a connecting joint. The end of the dilator close to the motor is connected to the connecting joint. The outer circumferential wall of the detection ring is provided with a plurality of detection strips. The sensor is arranged towards the detection strips on the detection ring. The motor and the sensor are electrically connected to the control system. The display screen is electrically connected to the control system. The application can realize the rotation detection of the retainer, display the detection result on the display screen, realize the detection of whether the retainer slips, enable the operator to intuitively see the state of the retainer on the display screen, and ensure the quality of the catheter rolling.

Description

Technical Field

[0001] This application relates to the field of catheter connection technology, and in particular to a catheter internal rolling device. Background Technology

[0002] Conduits are components of hydraulic systems in equipment such as aerospace vehicles and automobiles, enabling the flow of hydraulic oil. Conduits are connected to unflared fittings before being linked to other equipment or pipelines.

[0003] Currently, catheters and non-flared fittings are generally connected using an internal rolling device and an internal rolling process. The catheter and non-flared fitting are securely clamped together. Then, an expander for internal rolling is installed on the internal rolling device. The expander contains a retainer with multiple needle rollers. A mandrel is located inside the retainer, with one end tapered. The retainer is inserted into the catheter, and the mandrel moves axially along the catheter. The tapered mandrel compresses the needle rollers, causing them to contact the inner wall of the catheter and press the catheter wall material into the groove of the non-flared fitting, thus connecting the catheter and the non-flared fitting.

[0004] During the internal rolling process, due to factors such as lubrication, resistance, and vibration, the mandrel can no longer drive the needle rollers on the cage to rotate, causing slippage between the cage and the mandrel, which affects the internal rolling effect. However, operators using current internal rolling equipment cannot visually determine whether slippage has occurred, making it impossible to guarantee the quality of the internal rolling of the guide tube. Based on this, this application proposes an internal rolling device for guide tubes. Utility Model Content

[0005] This application provides a conduit internal rolling device that can achieve internal rolling of the conduit and detect the rotation of the cage during the internal rolling process, and display the detection results on the display screen to detect whether the cage is slipping. This allows the operator to intuitively see the status of the cage on the display screen, avoiding the situation where the cage slips without the operator's knowledge, and ensuring the quality of conduit internal rolling.

[0006] To solve the above-mentioned technical problems, this application adopts the following technical solution: A catheter rolling device includes an operating table, a detection ring, a sensor, a control system, and a display screen. The first end of the operating table is provided with a first clamp and a second clamp. The first clamp holds an expander, and the second clamp holds a catheter. The second end of the operating table is provided with a motor. A transmission assembly is coaxially mounted on the output shaft of the motor. The transmission assembly includes a transmission cylinder and a transmission rod. The transmission cylinder is connected to the output shaft of the motor and can drive the transmission rod to rotate. The transmission rod is slidably connected inside the transmission cylinder. The transmission rod has a connecting joint. The connecting joint, the expander, and the catheter are coaxially arranged. The end of the expander near the motor is connected to the connecting joint. The connector is used for connection. The detection ring is coaxially mounted on the retainer of the expander. The outer circumferential wall of the detection ring is provided with multiple detection strips. The multiple detection strips extend along the axial direction of the detection ring and are evenly arranged along the circumferential direction of the detection ring. The sensor is mounted on the operating table by a bracket. The sensor is positioned facing the detection strips on the detection ring. The motor and the sensor are both electrically connected to the control system. The display screen is electrically connected to the control system. When the sensor detects that the detection strip is rotating, the control system controls the display screen to display a normal signal. When the sensor detects that the detection strip has stopped rotating, the control system controls the display screen to display a slippage signal.

[0007] During use, the operator clamps the expander onto the first clamp, which is connected to the connector. The conduit to be connected is clamped onto the second clamp, ensuring the expander's mandrel and the conduit are coaxial. The motor is started, and the mandrel rotates under the action of the motor, transmission assembly, and connector, bringing the mandrel closer to the conduit. The mandrel presses against the needle rollers on the retainer, which in turn press against the inner wall of the conduit, forcing the conduit wall material into the groove of the non-flared connector, thus gradually achieving internal rolling. During this process, the detection ring rotates together with the retainer. Multiple detection strips and sensors detect whether the detection ring is rotating, i.e., whether the retainer is rotating, and display the detection result on the screen, thus detecting whether the retainer is slipping.

[0008] Compared to existing technologies, this catheter internal rolling device can achieve internal rolling of the catheter and detect the rotation of the cage during the internal rolling process, displaying the detection results on the display screen. This allows for the detection of whether the cage is slipping, enabling operators to intuitively see the status of the cage on the display screen. This avoids situations where the cage slips without the operator's knowledge, ensuring the quality of the catheter internal rolling.

[0009] In one embodiment of this application, the sensor is a color sensor, the detection strip is a color strip, and two adjacent color strips have different colors.

[0010] In one embodiment of this application, the angular interval between two adjacent color bars is 10 degrees.

[0011] In one embodiment of this application, the inner wall of the detection ring is provided with an internal thread, and the outer wall of the retainer is provided with an external thread, the external thread engaging with the internal thread.

[0012] In one embodiment of this application, an initial cylinder is further included. The initial cylinder is disposed on the operating table. The cylinder rod of the initial cylinder is connected to the transmission rod. The cylinder rod of the initial cylinder extends out to abut the mandrel of the expander against the needle roller of the expander.

[0013] In one embodiment of this application, the initial cylinder is equipped with a solenoid valve, which is electrically connected to the control system. The control system controls the initial force of the initial cylinder through the solenoid valve and displays it on the display screen.

[0014] In one embodiment of this application, the display screen is provided with adjustment buttons, which adjust the output force of the initial cylinder through the control system and the solenoid valve.

[0015] In one embodiment of this application, the operating table is provided with a first support base and a second support base, the transmission cylinder is rotatably connected to the first support base, the transmission rod is rotatably connected to the second support base, and the transmission rod is slidably connected to the transmission cylinder through a linear bearing; The inner wall of the transmission cylinder is provided with an axially extending inner groove, and the outer wall of the linear bearing is provided with an outer protruding rib, which cooperates with the inner groove. The transmission rod is provided with an axially extending outer groove, and the inner wall of the linear bearing is provided with an inner protruding rib, which cooperates with the outer groove.

[0016] In one embodiment of this application, the control system controls the rotational speed of the motor to gradually decrease as the spindle of the expander moves.

[0017] In one embodiment of this application, the motor is a servo motor. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1This is a three-dimensional structural schematic diagram of an inner tube rolling device provided in an embodiment of this application; Figure 2 A three-dimensional structural schematic diagram of the inner tube rolling device provided in one embodiment of this application from another direction; Figure 3 A three-dimensional structural diagram of the expander and catheter used in the catheter rolling device provided in an embodiment of this application; Figure 4 A three-dimensional structural schematic diagram of the detection ring used in the conduit inner rolling device provided in an embodiment of this application; Figure 5 This is a cross-sectional structural schematic diagram of the inner roller pressing device for a conduit provided in an embodiment of this application.

[0020] Figure label: 100. Operating table; 110. First clamp; 120. Second clamp; 130. Motor; 140. Connecting joint; 150. Detection ring; 151. Detection strip; 160. Sensor; 170. Initial cylinder; 180. First support base; 190. Second support base; 195. Linear bearing; 200. Expander; 210. Cage; 220. Mandrel; 230. Needle roller; 300. Guide tube; 400. Transmission assembly; 410. Transmission cylinder; 420. Transmission rod; 500. Display screen. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0022] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the inner tube rolling device provided in an embodiment of this application. Figure 2 This is a three-dimensional structural diagram of the inner tube rolling device provided in one embodiment of this application from another direction. Figure 3 This is a three-dimensional structural diagram of the expander and catheter used in the catheter rolling device provided in an embodiment of this application. Figure 4 This is a three-dimensional structural diagram of the detection ring used in the conduit rolling device provided in one embodiment of this application. Figure 5 This is a cross-sectional structural schematic diagram of the inner roller pressing device for a conduit provided in an embodiment of this application.

[0026] Embodiments of this application provide a conduit rolling device, such as... Figure 1 and Figure 2 As shown, the system includes an operating table 100, a detection ring 150, a sensor 160, a control system (not shown in the figure), and a display screen 500. The operating table 100 is a structure for mounting and supporting other components. The detection ring 150 works with the sensor 160 to detect the rotation of the cage 210. The control system controls the actions of each component. The display screen 500 can display relevant data of the inner rolling process.

[0027] like Figure 1 and Figure 2 As shown, the first end of the operating table 100 is provided with a first clamp 110 and a second clamp 120. The first clamp 110 clamps the expander 200, and the second clamp 120 clamps the conduit 300. The first clamp 110 and the second clamp 120 are of the rotating opening and closing type, which facilitates clamping and disassembly.

[0028] like Figure 3As shown, the expander 200 is an inner diameter tooling for the internal rolling process, generally composed of a cage 210 and a mandrel 220. A needle roller 230 is mounted on the cage 210, and the mandrel 220 can contact and drive the needle roller 230 to rotate. The guide tube 300 is the guide tube to be expanded, with a diameter generally between 6mm and 32mm.

[0029] like Figure 1 and Figure 5 As shown, a motor 130 is provided at the second end of the operating table 100. A transmission assembly 400 is coaxially mounted on the output shaft of the motor 130. The transmission assembly 400 includes a transmission cylinder 410 and a transmission rod 420. The transmission cylinder 410 is connected to the output shaft of the motor 130 and can drive the transmission rod 420 to rotate. The transmission rod 420 is slidably connected inside the transmission cylinder 410, allowing the transmission rod 420 to rotate and move axially along the transmission cylinder 410 simultaneously. The transmission rod 420 is provided with a connecting joint 140. The connecting joint 140, the expander 200, and the guide tube 300 are coaxially arranged. The end of the expander 200 near the motor 130 is connected to the connecting joint 140. When the motor 130 starts, it can drive the transmission assembly 400 to rotate, thereby driving the spindle 220 of the connecting joint 140 and the expander 200 to rotate, and gradually completing the internal rolling operation. During this process, the movement of the transmission rod 420 along the axial direction of the transmission cylinder 410 can be achieved manually by the operator or automatically by the drive component, and no limitation is made here.

[0030] like Figure 3 and Figure 4 As shown, the detection ring 150 is coaxially mounted on the retainer 210 of the expander 200. The outer circumferential wall of the detection ring 150 is provided with multiple detection strips 151, which extend axially along the detection ring 150 and are evenly distributed along its circumference. When the retainer 210 rotates, it drives the detection ring 150 to rotate, causing the detection strips 151 to also rotate. Therefore, whether the retainer 210 rotates can be determined by detecting and judging whether the detection strips 151 rotate.

[0031] like Figure 1 As shown, sensor 160 is mounted on operating table 100 via bracket. Sensor 160 is positioned facing the detection strip 151 on detection ring 150. Sensor 160 can detect the detection strip 151 to determine whether the detection strip 151 is rotating.

[0032] Both motor 130 and sensor 160 are electrically connected to the control system, and display screen 500 is also electrically connected to the control system, allowing the control system to display relevant data on display screen 500. When sensor 160 detects rotation of the detection bar 151, the control system controls display screen 500 to display a normal signal, indicating that the detection bar 151 is rotating normally, meaning the cage 210 is rotating normally. When sensor 160 detects that the detection bar 151 has stopped rotating, the control system controls display screen 500 to display a slippage signal, indicating that the detection bar 151 is no longer rotating, meaning the cage 210 is no longer rotating, and slippage has occurred between the spindle 220 and the cage 210, requiring appropriate action.

[0033] It should be noted that the inner rolling device of the guide tube is also equipped with detection components such as mandrel displacement detection, mandrel torque detection, and mandrel angular displacement detection (e.g., linear displacement sensor, torque sensor, and angular displacement sensor). These detection components are electrically connected to the control system. The control system can display the corresponding detection results of these components on the display screen 500 in the form of curves, thereby realizing the detection and recording of the movement process of the mandrel 220.

[0034] In use, the operator clamps the expander 200 onto the first clamp 110, connects the expander 200 to the connecting joint 140, and clamps the conduit 300 to be connected onto the second clamp 120, ensuring that the mandrel 220 of the expander 200 and the conduit 300 are coaxial. The motor 130 is started, and the mandrel 220 rotates under the action of the motor 130, the transmission assembly 400, and the connecting joint 140, causing the mandrel 220 to move closer to the conduit 300. The mandrel 220 presses against the needle rollers 230 on the retainer 210, and the needle rollers 230 press against the inner wall of the conduit 300, forcing the conduit wall material into the groove of the non-flared joint, thereby gradually achieving internal rolling. During this process, the detection ring 150 rotates together with the cage 210. Through multiple detection strips 151 and sensors 160, it is possible to detect whether the detection ring 150 has rotated, that is, whether the cage 210 has rotated, and display the detection result on the display screen 500 to realize the detection of whether the cage 210 has slipped.

[0035] Compared to existing technologies, this conduit internal rolling device can achieve internal rolling of the conduit 300, and during the internal rolling process, it can detect the rotation of the cage 210 and display the detection results on the display screen 500. This allows the operator to intuitively see the status of the cage 210 on the display screen 500, avoiding situations where the cage 210 slips without the operator's knowledge, and ensuring the quality of the internal rolling of the conduit 300.

[0036] In some embodiments, sensor 160 is a color sensor, and detection strip 151 is a color strip, with adjacent color strips having different colors. When the color sensor detects a change in the color of detection strip 151, it indicates that detection ring 150 is rotating. When the color sensor detects no change in the color of detection strip 151, it indicates that detection ring 150 is not rotating. Through this method, detection ring 150 is detected, thereby determining whether slippage has occurred between spindle 220 and cage 210.

[0037] In some embodiments, the angular interval between two adjacent color bars is 10 degrees. The detection bar 151 can be detected once every 10 degrees of rotation, thus meeting the detection requirements.

[0038] In some embodiments, the inner wall of the detection ring 150 is provided with an internal thread, and the outer wall of the retainer 210 is provided with an external thread, with the external thread engaging with the internal thread. The detection ring 150 is installed on the retainer 210 via a threaded connection, facilitating installation. Alternatively, the detection ring 150 may be provided with a set screw hole, and then the set screw abuts against the circumferential wall of the retainer 210, resulting in a more secure installation and preventing loosening.

[0039] In some embodiments, such as Figure 1 As shown, the inner rolling device for the conduit also includes an initial cylinder 170, which is mounted on the operating table 100. The cylinder rod of the initial cylinder 170 is connected to the transmission rod 420. The cylinder rod of the initial cylinder 170 extends, thereby applying a force close to the conduit 300 to the transmission rod 420, which causes the mandrel 220 of the expander 200 to abut against the needle rollers 230 of the expander 200. In other words, before the inner rolling begins, the initial cylinder 170 provides an initial force to the mandrel 220, causing the mandrel 220 to abut against the needle rollers 230. In this way, when the mandrel 220 rotates, it is easy to drive the needle rollers 230 to rotate, reducing the possibility of slippage from the beginning and improving the inner rolling effect.

[0040] In some embodiments, the initial cylinder 170 is equipped with a solenoid valve (not shown in the figure). The solenoid valve is electrically connected to the control system. The control system controls the initial force of the initial cylinder 170 through the solenoid valve and displays it on the display screen 500. The opening degree of the solenoid valve can be varied. The opening degree of the solenoid valve can be controlled by the control system, thereby controlling the initial force of the initial cylinder 170. The operator can observe the magnitude of the initial force on the display screen 500, which is more intuitive and accurate.

[0041] In some embodiments, the display screen 500 is provided with adjustment buttons, which adjust the output force of the initial cylinder 170 through the control system and solenoid valve. When performing internal rolling on conduits 300 of different specifications, the required initial force is different, and the initial force can be adjusted on the display screen 500 through the adjustment buttons to meet the initial contact requirements.

[0042] In some embodiments, such as Figure 5 As shown, the operating table 100 is provided with a first support base 180 and a second support base 190. The transmission cylinder 410 is rotatably connected to the first support base 180, and the transmission rod 420 is rotatably connected to the second support base 190. The first support base 180 is used to install and support the transmission cylinder 410, and the second support base 190 is used to install and support the transmission rod 420. The transmission rod 420 is slidably connected to the transmission cylinder 410 through a linear bearing 195, which reduces friction between the two and makes the sliding smoother.

[0043] The inner wall of the transmission cylinder 410 has an axially extending inner groove, and the outer wall of the linear bearing 195 has an outer protruding rib that mates with the inner groove. The transmission rod 420 has an axially extending outer groove, and the inner wall of the linear bearing 195 has an inner protruding rib that mates with the outer groove. Thus, when the transmission cylinder 410 rotates with the motor 130, the linear bearing 195 can drive the transmission rod 420 to rotate, which in turn drives the connecting joint 140 and the spindle 220 to rotate.

[0044] In some embodiments, the control system controls the motor 130 to gradually decrease its speed as the mandrel 220 of the expander 200 moves. As the mandrel 220 moves toward the guide tube 300, the needle rollers 230 gradually perform internal rolling on the guide tube 300. With this internal rolling, both the load and resistance increase. Reducing the speed avoids damage to the expander 200, thus protecting it. This effect is more pronounced when rolling small-diameter guide tubes 300. Furthermore, the guide tube 300 requires a certain amount of time to complete plastic deformation. As internal rolling progresses, the difficulty and time required for the guide tube 300 to complete plastic deformation also increase. Reducing the speed provides sufficient time for the guide tube 300 to undergo plastic deformation, allowing it to complete the process.

[0045] In some embodiments, motor 130 is a servo motor. Servo motors are characterized by high precision, fast response speed, and strong stability, enabling highly accurate positioning and motion control. They feature high-precision closed-loop control, allowing them to perform corresponding actions in a short time, making them easier to control and operate.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A device for rolling inside a conduit, characterized in that, include: An operating table is provided at its first end with a first clamp and a second clamp. The first clamp holds an expander, and the second clamp holds a conduit. A motor is provided at the second end of the operating table. A transmission assembly is coaxially mounted on the output shaft of the motor. The transmission assembly includes a transmission cylinder and a transmission rod. The transmission cylinder is connected to the output shaft of the motor and can drive the transmission rod to rotate. The transmission rod is slidably connected inside the transmission cylinder. The transmission rod is provided with a connecting joint. The connecting joint, the expander, and the conduit are coaxially arranged. The end of the expander near the motor is connected to the connecting joint. A detection ring is coaxially mounted on the retainer of the expander. The outer circumferential wall of the detection ring is provided with a plurality of detection strips, which extend along the axial direction of the detection ring and are evenly arranged along the circumferential direction of the detection ring. A sensor is mounted on the operating table via a bracket, and the sensor is positioned facing the detection strip on the detection ring. The control system, wherein the motor and the sensor are both electrically connected to the control system; The display screen is electrically connected to the control system. When the sensor detects that the detection bar is rotating, the control system controls the display screen to display a normal signal; when the sensor detects that the detection bar has stopped rotating, the control system controls the display screen to display a slippage signal.

2. The conduit inner rolling device according to claim 1, characterized in that, The sensor is a color sensor, and the detection bar is a color bar, with adjacent color bars having different colors.

3. The conduit inner rolling device according to claim 2, characterized in that, The angle between two adjacent color bars is 10 degrees.

4. The conduit inner rolling device according to claim 3, characterized in that, The inner wall of the detection ring is provided with an internal thread, and the outer wall of the retainer is provided with an external thread, the external thread engaging with the internal thread.

5. The conduit inner rolling device according to claim 1, characterized in that, It also includes an initial cylinder, which is disposed on the operating table. The cylinder rod of the initial cylinder is connected to the transmission rod, and the cylinder rod of the initial cylinder extends out to abut the mandrel of the expander against the needle roller of the expander.

6. The conduit inner rolling device according to claim 5, characterized in that, The initial cylinder is equipped with a solenoid valve, which is electrically connected to the control system. The control system controls the initial force of the initial cylinder through the solenoid valve and displays it on the display screen.

7. The conduit inner rolling device according to claim 6, characterized in that, The display screen is equipped with adjustment buttons, which adjust the output force of the initial cylinder through the control system and the solenoid valve.

8. The conduit rolling device according to any one of claims 1 to 7, characterized in that, The operating platform is provided with a first support base and a second support base. The transmission cylinder is rotatably connected to the first support base, and the transmission rod is rotatably connected to the second support base. The transmission rod is slidably connected to the transmission cylinder through a linear bearing. The inner wall of the transmission cylinder is provided with an axially extending inner groove, and the outer wall of the linear bearing is provided with an outer protruding rib, which cooperates with the inner groove. The transmission rod is provided with an axially extending outer groove, and the inner wall of the linear bearing is provided with an inner protruding rib, which cooperates with the outer groove.

9. The conduit inner rolling device according to claim 8, characterized in that, The control system controls the motor speed to gradually decrease as the mandrel of the expander moves.

10. The conduit inner rolling device according to claim 9, characterized in that, The motor is a servo motor.

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