Medical fine steel wire unwinding detection and deviation rectifying device

Abstract

The application provides a medical fine steel wire unwinding detection deviation rectifying device, which comprises an unwinding mechanism, a detection mechanism and a deviation rectifying mechanism, the deviation rectifying mechanism drives the unwinding mechanism to move along the axis direction of the steel wire roll; the detection mechanism comprises a anti-jumping wire guide wheel, a induction assembly and detection sensors, the steel wire passes through the anti-jumping wire guide wheel, the anti-jumping wire guide wheel is connected with the induction assembly through a connecting arm, and the detection sensors are oppositely arranged on the outer side of the induction assembly; when the unwound steel wire deviates, the steel wire drives the anti-jumping wire guide wheel and the induction assembly to deviate, triggers the detection sensor on the corresponding side, and the triggered detection sensor sends a signal to control the deviation rectifying mechanism to drive the unwinding mechanism to move in the opposite direction of the deviation. The application adopts the deviation of the steel wire to drive the deviation of the induction assembly to detect the deviation, increases the detection induction area, and realizes stable and accurate detection, and solves the problems of inaccurate induction due to small wire diameter and incompatible detection due to different wire diameters.

Description

Technical Field

[0001] This invention relates to the field of medical device manufacturing technology, and in particular to a medical fine steel wire unwinding detection and correction device. Background Technology

[0002] In the manufacturing process of medical catheters using the mold coating method, stainless steel wire mandrels are inserted into the mold for coating. During this process, the stainless steel wire mandrels are continuously unwound via an unwinding mechanism. However, some irregularly arranged wires may skip windings, preventing them from being centered within the mold and causing excessive friction on the guide rollers. This friction generates impurities, which negatively impact the coating quality. Therefore, an unwinding deviation detection and correction device is needed.

[0003] Currently, the conventional method for detecting unwinding offset is to directly use a detection sensor. However, this method has many problems: 1. Because the diameter of the stainless steel wire mandrel is very small, only 0.1-2.8mm, the detection is inaccurate when using a conventional detection sensor; 2. There are many specifications of stainless steel wire mandrels, and conventional detection sensors are not compatible; 3. Although a fixed laser beam sensor can detect the offset, it cannot detect the direction of the offset. Summary of the Invention

[0004] The present invention aims to provide a medical fine steel wire unwinding detection and correction device to overcome the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a medical fine steel wire unwinding detection and correction device, comprising an unwinding mechanism, a detection mechanism, and a correction mechanism. The unwinding mechanism unwinds the steel wire, and the correction mechanism drives the unwinding mechanism to move along the axial direction of the steel wire roll to correct the deviation. The detection mechanism includes an anti-slip wire guide wheel, a sensing component, and a detection sensor. The steel wire passes through the guide groove of the anti-slip wire guide wheel from below, around the side of the guide groove, and upwards. The anti-slip wire guide wheel is connected to the sensing component through a connecting arm. Two detection sensors are provided, positioned opposite each other outside the sensing component. When the unwinding steel wire deviates, the steel wire drives the anti-slip wire guide wheel, the connecting arm, and the sensing component to deviate in the opposite direction of the deviation. The sensing part of the deviated sensing component triggers the detection sensor on the corresponding side, and the triggered detection sensor sends a signal to control the correction mechanism to drive the unwinding mechanism to move in the opposite direction of the deviation.

[0006] Furthermore, in the aforementioned medical fine steel wire unwinding detection and correction device, the detection sensor is fixed on the sensing bracket, the sensing bracket is located above the mounting base, and the mounting base is fixedly connected to the coating equipment.

[0007] Furthermore, in the aforementioned medical fine steel wire unwinding detection and correction device, the sensing component includes a balance shaft, a bearing seat, a rotating shaft, and a sensing plate. The rotating shaft is inserted into the rotating seat and rotatably connected to the rotating seat via a bearing located within the rotating seat. The rotating seat is fixed below the mounting base. One end of the rotating shaft is fixed with a clamping seat one, and the other end is fixed with a clamping seat two. The bearing seat is fixed on clamping seat one. The upper end of the sensing plate is the sensing part of the sensing component. The sensing plate is fixed on clamping seat two and located in the middle of the two detection sensors. The balance shaft is inserted into the bearing seat and rotatably connected to the bearing seat. The balance shaft is parallel to the steel wire roll, and the rotating shaft is perpendicular to the steel wire roll. The lower end of the connecting arm is connected to the anti-skid guide wheel, and the upper end is connected to the balance shaft.

[0008] Furthermore, in the aforementioned medical fine steel wire unwinding detection and correction device, the sensing component also includes a counterweight, which is fixed on the balance shaft and disposed on both sides of the bearing seat opposite to the connecting arm.

[0009] Furthermore, in the aforementioned medical fine steel wire unwinding detection and correction device, the detection mechanism further includes an adjustment component. The adjustment component includes an adjusting rod, a limiting rod, a clamp three, and a clamp four. The adjusting rod is located below the rotating shaft. One end of the clamp three is fixedly connected to the rotating shaft, and the other end is fixedly connected to the adjusting rod. Two limiting rods are provided and connected to the adjusting rod through the clamp four. The connecting arm is rotatably connected to the balance shaft through a bearing. The two limiting rods are positioned opposite each other on the outer side of the connecting arm wall plate to limit the angular position of the connecting arm on the balance shaft, thereby ensuring the connection between the steel wire and the anti-skid guide wheel. A rubber sleeve is provided on the outer side of the limiting rod that mates with the connecting arm.

[0010] Furthermore, in the aforementioned medical fine steel wire unwinding detection and correction device, the detection mechanism further includes a limiting plate, which is fixed on the mounting base. The sensing part of the sensing plate is provided with a U-shaped groove, and the limiting plate is inserted into the U-shaped groove and centered in the U-shaped groove.

[0011] Furthermore, in the aforementioned medical fine steel wire unwinding detection and correction device, the correction mechanism includes a base, a servo motor, a lead screw, a slide rail, and a correction seat. The lead screw has support seats at both ends and is mounted in the middle of the base through the support seats. The output end of the servo motor is connected to the lead screw through a coupling. Two slide rails are also symmetrically arranged on both sides of the lead screw. The correction seat is connected to the nut seat on the lead screw and the slider on the slide rail.

[0012] Furthermore, in the aforementioned medical fine steel wire unwinding detection and correction device, the unwinding mechanism is mounted on the correction seat and includes an unwinding seat and a second servo motor. One end of the drive shaft in the unwinding seat is connected to the steel wire roll, and the other end is connected to the second servo motor via a coupling. The steel wire roll is fixed on the steel wire roll, and the second servo motor is fixed on the correction seat via a motor mount.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the offset of the steel wire drives the offset of the sensing plate to provide feedback and detect the offset of the steel wire, which can increase the detection sensing area and make the detection stable and accurate. It solves the problems of inaccurate sensing due to small wire diameter and incompatibility of detection due to different wire diameters, and also solves the problem of uncertain offset direction. Furthermore, by detecting the offset of the sensing plate, the correction mechanism is driven to correct the steel wire roll, keeping the steel wire centered during unwinding, reducing wear and improving product production quality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the medical fine steel wire unwinding detection and correction device of the present invention; Figure 2 This is a schematic diagram of the main structure of the medical fine steel wire unwinding detection and correction device of the present invention; Figure 3 This is a schematic diagram of the detection mechanism of the medical fine steel wire unwinding detection and correction device of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the detection mechanism of the medical fine steel wire unwinding detection and correction device of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the unwinding mechanism and the correction mechanism of the medical fine steel wire unwinding detection and correction device of the present invention; In the diagram: 1. Unwinding mechanism; 11. Unwinding base; 12. Servo motor 2; 13. Wire reel; 2. Detection mechanism; 21. Anti-skid guide wheel; 22. Sensing component; 221. Balance shaft; 222. Bearing seat; 223. Rotating shaft; 224. Sensing plate; 225. Clamp one; 226. Clamp two; 227. Counterweight; 23. Detection sensor; 24. Connecting arm; 25. Sensing bracket; 26. Mounting base; 27. Rotating base; 28. Adjustment component; 281. Adjusting rod; 282. Limiting rod; 283. Clamp three; 284. Clamp four; 29. ​​Limiting piece; 3. Correction mechanism; 31. Base; 32. Servo motor 1; 33. Lead screw; 34. Slide rail; 35. Correction seat. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Example 1

[0018] like Figure 1-5 As shown, a medical fine steel wire unwinding detection and correction device includes an unwinding mechanism 1, a detection mechanism 2, and a correction mechanism 3. The unwinding mechanism 1 unwinds the steel wire, and the correction mechanism 3 drives the unwinding mechanism 1 to move along the axial direction of the steel wire roll to correct deviation. The detection mechanism 2 includes an anti-slip guide wheel 21, a sensing component 22, and a detection sensor 23. The steel wire passes through the guide groove of the anti-slip guide wheel 21 from below, around the side of the guide groove, and upwards. The anti-slip guide wheel 21 is connected to the sensing component 22 via a connecting arm 24. The detection sensor 23... Two sensors 23 are provided, which are located opposite each other on the outside of the sensing part of the sensing component 22. When the unwound steel wire deviates, the steel wire drives the anti-skid guide wheel 21, the connecting arm 24 and the sensing component 22 to deviate in the opposite direction of the deviation. The sensing part of the deviated sensing component 22 triggers the detection sensor 23 on the corresponding side. The triggered detection sensor 23 sends a signal to control the correction mechanism 3 to drive the unwinding mechanism 1 to move in the opposite direction of the deviation, thereby realizing the correction of the unwound steel wire, keeping the steel wire centered during unwinding, reducing wear and improving the coating quality of the product.

[0019] Among them, such as Figure 3-4 As shown, the detection sensor 23 is fixed on the sensing bracket 25, which is located above the mounting base 26, which is fixedly connected to the coating equipment. Two detection sensors 23 are positioned on either side of the sensing plate 224 and can detect the offset direction.

[0020] like Figure 1 , 3As shown in Figure 4, the sensing component 22 includes a balance shaft 221, a bearing seat 222, a rotating shaft 223, and a sensing plate 224. The rotating shaft 223 is inserted into a rotating seat 27 and rotatably connected to the rotating seat 27 via a bearing located within the rotating seat 27. The rotating seat 27 is fixed below the mounting base 26. One end of the rotating shaft 223 is fixed with a clamping seat 1 225, and the other end is fixed with a clamping seat 226. The bearing seat 222 is fixed on the clamping seat 1 225. The upper end of the sensing plate 224 is the sensing part of the sensing component 22. The sensing plate 224 is fixed on the clamping seat 226 and is located in the middle of the two detection sensors 23. The balance shaft 221 is inserted into the bearing seat 222 and rotatably connected to the bearing seat 222. The balance shaft 221 is parallel to the wire roll, and the rotating shaft 223 is perpendicular to the wire roll. The lower end of the connecting arm 24 is connected to the anti-skid guide wheel 21, and the upper end is connected to the balance shaft 221.

[0021] When the unwound wire is not deviated, it is in the center position, and the detection mechanism 2 is vertically positioned. When the unwound wire deviates, the wire exerts a pulling force on the anti-skid guide wheel 21, causing the connecting arm 24, balance shaft 221, and sensing plate 224 to rotate around the rotating shaft 223 in the opposite direction of the deviation. This causes the sensing plate 224 to approach and trigger the detection sensor 23 in the opposite direction of the deviation. The triggered detection sensor 23 sends a signal to the equipment PLC to control the correction mechanism 3, which drives the unwound mechanism 1 to move in the corresponding direction. This prevents both left and right detection sensors 23 from detecting any signals, keeping the wire centered during unwound operation. The detection mechanism 2 then returns to center, and the correction mechanism 3 stops. As can be seen, using the sensing component 22 to feedback and detect the wire deviation increases the detection sensing area, improves detection accuracy, and solves the problems of inaccurate sensing due to small wire diameter, incompatibility of detection with different wire diameters, and uncertainty in the deviation direction.

[0022] Example 2

[0023] Based on the structure of Example 1, such as Figure 1 , 3 As shown in Figure 4, the sensing component 22 also includes a counterweight 227, which is fixed on the balance shaft 221 and disposed on both sides of the bearing seat 222 opposite to the connecting arm 24. The counterweight 227 reduces the load on the balance shaft 221 and ensures that the connecting arm 23 wall plate remains vertically aligned without deviation when the steel wire is not deviated, thus avoiding affecting the detection accuracy.

[0024] Among them, such as Figure 1 , 3As shown in Figure -4, the detection mechanism 2 further includes an adjustment assembly 28, which includes an adjustment rod 281, a limiting rod 282, a third clamp 283, and a fourth clamp 284. The adjustment rod 281 is located below the rotating shaft 223. One end of the third clamp 283 is fixedly connected to the rotating shaft 223, and the other end is fixedly connected to the adjustment rod 281. Two limiting rods 282 are provided and connected to the adjustment rod 281 through the fourth clamp 284. The connecting arm 24 is rotatably connected to the balance shaft 221 through a bearing. The two limiting rods 282 are located on the outer side of the connecting arm 24 wall plate to limit the angular position of the connecting arm 24 on the balance shaft 221, thereby ensuring the connection between the steel wire and the anti-skid guide wheel 21. The outer side of the limiting rod 282 that mates with the connecting arm 24 is fitted with a rubber sleeve. The installation method using multiple clamps allows for convenient adjustment of the installation position, resulting in a simple structure and good flexibility. Initially, the angle of the rotating connecting arm 24 ensures the connection between the steel wire and the anti-skid guide wheel 21. Then, the position is limited by adjusting the adjustment component 28, thereby ensuring that the sensor plate 224 is offset by the offset of the steel wire.

[0025] In addition, such as Figure 3-4 As shown, the detection mechanism 2 also includes a limiting piece 29, which is fixed on the mounting base 26. The sensing part of the sensing plate 224 is configured with a U-shaped groove, and the limiting piece 29 is inserted into the U-shaped groove and centered within it. The limiting piece 29 prevents excessive offset from affecting the coating quality and also prevents excessive offset from exceeding the sensing distance, which could cause the sensing plate 224 to collide with the detection sensor 23 and damage the sensor 23, thus improving equipment safety.

[0026] In addition, such as Figure 1-2 As shown in Figure 5, the correction mechanism 3 includes a base 31, a servo motor 32, a lead screw 33, a slide rail 34, and a correction seat 35. The lead screw 33 has support seats at both ends and is mounted on the middle of the base 31 via these support seats. The output end of the servo motor 32 is connected to the lead screw 33 via a coupling. Two symmetrically arranged slide rails 34 are also provided on both sides of the lead screw 33. The correction seat 35 is connected to the nut seat on the lead screw 33 and the slider on the slide rail 34. When the detection sensor 23 is triggered, a signal is sent to control the servo motor 32 to start, driving the correction seat 35 to move in the corresponding direction, thus centering the wire for unwinding.

[0027] like Figure 1 , 5 As shown, the unwinding mechanism 1 is mounted on the correction seat 35 and includes an unwinding seat 11 and a servo motor 12. One end of the drive shaft in the unwinding seat 11 is connected to the wire roll 13, and the other end is connected to the servo motor 12 through a coupling. The wire roll is fixed on the wire roll 13, and the servo motor 12 is fixed on the correction seat 35 through a motor mount.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A medical fine steel wire unwinding detection and correction device, characterized in that: The device includes an unwinding mechanism, a detection mechanism, and a correction mechanism. The unwinding mechanism unwinds the steel wire, and the correction mechanism drives the unwinding mechanism to move along the axis of the steel wire roll to correct any deviation. The detection mechanism includes an anti-slip wire guide wheel, a sensing component, and detection sensors. The steel wire passes through the guide wheel from below the guide groove, around the side of the guide groove, and upwards. The anti-slip wire guide wheel is connected to the sensing component via a connecting arm. Two detection sensors are provided, positioned opposite each other outside the sensing component. The sensing assembly includes a balance shaft, a bearing housing, a rotating shaft, and a sensing plate. The rotating shaft is inserted into the rotating housing and rotatably connected to the rotating housing via a bearing located within the rotating housing. The rotating housing is fixed below the mounting base. One end of the rotating shaft is fixed to a clamping seat one, and the other end is fixed to a clamping seat two. The bearing housing is fixed to clamping seat one. The upper end of the sensing plate is the sensing part of the sensing assembly. The sensing plate is fixed to clamping seat two and is located in the middle of the two detection sensors. The balance shaft is inserted into the bearing housing and rotatably connected to the bearing housing. The balance shaft is parallel to the wire roll, and the rotating shaft is perpendicular to the wire roll. The lower end of the connecting arm is connected to the anti-skid guide wheel, and the upper end is connected to the balance shaft. The detection mechanism also includes a limiting piece, which is fixed on the mounting base. The sensing part of the sensing plate is provided with a U-shaped groove, and the limiting piece is inserted into the U-shaped groove and is centered in the U-shaped groove. When the unwound wire deviates, the wire drives the anti-skid guide wheel, connecting arm and sensing component to deviate in the opposite direction of the deviation. The sensing part of the deviated sensing component triggers the detection sensor on the corresponding side. The triggered detection sensor sends a signal to control the correction mechanism to drive the unwound mechanism to move in the opposite direction of the deviation.

2. The medical fine wire unwinding detection and deviation correction device according to claim 1, characterized in that: The detection sensor is fixed on the sensing bracket, which is located above the mounting base, and the mounting base is fixedly connected to the coating equipment.

3. The medical fine wire unwinding detection and deviation rectification device according to claim 1, characterized in that: The sensing component also includes a counterweight, which is fixed on the balance shaft and disposed on both sides of the bearing seat opposite to the connecting arm.

4. The medical fine wire unwinding detection and correction device according to claim 1 or 3, characterized in that: The detection mechanism also includes an adjustment assembly, which includes an adjustment rod, a limiting rod, a clamp three, and a clamp four. The adjustment rod is located below the rotating shaft. One end of the clamp three is fixedly connected to the rotating shaft, and the other end is fixedly connected to the adjustment rod. There are two limiting rods, which are connected to the adjustment rod through the clamp four. The connecting arm is rotatably connected to the balance shaft through a bearing. The two limiting rods are located opposite each other on the outer side of the connecting arm wall plate to limit the angular position of the connecting arm on the balance shaft, so as to ensure the connection between the steel wire and the anti-skid guide wheel. The outer side of the limiting rod that cooperates with the connecting arm is covered with a rubber sleeve.

5. The medical fine steel wire unwinding detection and correction device according to claim 1, characterized in that: The correction mechanism includes a base, a servo motor, a lead screw, a slide rail, and a correction seat. The lead screw has support seats at both ends and is mounted in the middle of the base through the support seats. The output end of the servo motor is connected to the lead screw through a coupling. Two slide rails are also symmetrically arranged on both sides of the lead screw. The correction seat is connected to the nut seat on the lead screw and the slider on the slide rail.

6. The medical fine steel wire unwinding detection and correction device according to claim 1, characterized in that: The unwinding mechanism is mounted on the correction seat and includes an unwinding seat and a second servo motor. One end of the drive shaft in the unwinding seat is connected to the wire roll, and the other end is connected to the second servo motor via a coupling. The wire roll is fixed on the wire roll, and the second servo motor is fixed on the correction seat via a motor mount.

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