A medical stainless steel wire inverted type take-up machine integrated with wire straightening

Abstract

This invention relates to the field of wire production technology, specifically an inverted take-up machine for medical stainless steel wire with integrated wire straightening. It includes a frame, a turntable rotatably mounted on the frame, and a straightening fixture located on the side of the frame. The wire passes through the straightening fixture, around the turntable, and is wound by a take-up mechanism located below the frame. Two abutment wheels are movably mounted on the frame and located on the side of the turntable. These wheels are driven by a pneumatic mechanism mounted on the frame, moving radially along the turntable. The pneumatic mechanism is connected to a slidingly fitted block on the frame, and the fitted block is connected to a driven mechanism located on the turntable. The elastic support and progressive pressure design effectively avoids excessive initial impact force on the wire during straightening, preventing surface indentations or scratches due to instantaneous overload, thus protecting the wire's smoothness and preventing microcracks from forming in the internal microstructure due to stress abrupt changes. This can lead to uneven mechanical properties and potential fatigue fracture.

Description

Technical Field

[0001] This invention relates to the field of wire production technology, specifically to an inverted take-up machine for medical stainless steel wires that integrates wire straightening. Background Technology

[0002] Medical-grade stainless steel wire is a precision metal material specifically designed for the medical field, widely used in the manufacture of surgical sutures, stents, catheters, and various implantable medical devices. During the wire production process, uneven residual stress is easily generated within the material due to the effects of processes such as drawing, annealing, and cooling. In addition, interlayer compression and elastic deformation during winding and storage result in a certain degree of bending or twisting of the wire before it is wound up.

[0003] To address this, the wire is straightened before being wound up. Due to the thin and soft nature of medical stainless steel wire, traditional straightening methods based on tension stretching can subject the wire to axial tensile stress, which can easily lead to necking, plastic deformation, or even breakage. This is clearly unsuitable. Therefore, the current mainstream solution is to arrange multiple sets of staggered straightening rollers along the winding path. The rollers apply local radial pressure to the wire to achieve the straightening purpose.

[0004] However, in existing roller-type straightening methods, the pressure of each roller is usually set uniformly by the operator before the winding starts, and it is adjusted synchronously. This means that from the initial moment the wire enters the straightening system, it must bear the preset full load straightening force. This impact loading method is very likely to cause indentations or scratches on the surface of the wire due to instantaneous overload, damaging its smoothness, and causing microcracks to form in the internal microstructure of the wire due to stress change, resulting in uneven mechanical properties of the wire and laying the groundwork for fatigue fracture. Summary of the Invention

[0005] The purpose of this invention is to provide an inverted take-up machine for medical stainless steel wires with integrated inlet straightening, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An inverted take-up machine for medical stainless steel wire with integrated wire straightening includes a frame, a turntable rotatably mounted on the frame, and a straightening fixture located on the side of the frame. The wire passes through the straightening fixture, goes around the turntable, and is taken up by a take-up mechanism located below the frame.

[0008] Two abutting wheels located on the side of the turntable are movably mounted on the frame. The abutting wheels can be driven by a pneumatic mechanism mounted on the frame to move radially along the turntable. The pneumatic mechanism is connected to a fitting block that slides on the frame. The fitting block is connected to a driven mechanism mounted on the turntable. The driven mechanism cooperates with the take-up mechanism.

[0009] The fitting block is also connected to the straightening fixture, which includes a first plate and a second plate fixed to the side of the frame. The first plate and the second plate are perpendicular to each other, and both are rotatably mounted with multiple first rollers and movably provided with second rollers that intersect with the multiple first rollers. The second rollers are connected to an elastic pressure mechanism. When the abutting roller moves toward the turntable, the elastic pressure mechanism is triggered, which can cause the pressure of the second roller on the wire to decrease.

[0010] The medical stainless steel wire inverted take-up machine with integrated infeed straightening as described above: the first plate is provided with a guide groove, the elastic pressure mechanism includes a guide post fixed in the guide groove and a columnar spring sleeved on the outer periphery of the guide post, a first slider and a second slider are also slidably fitted in the guide groove, the two ends of the columnar spring are respectively connected to the first slider and the second slider, and the second roller is rotatably mounted on the second slider;

[0011] The first sliders are connected to a position adjustment assembly disposed on the first plate. The position adjustment assembly can drive the first sliders to slide in the guide groove to change the compression of the cylindrical spring.

[0012] The medical stainless steel wire inverted take-up machine with integrated wire straightening as described above: the position adjustment component includes a movable arm slidably disposed on the first plate, the movable arm being fixedly connected to multiple first sliders by multiple connectors, and the length of the multiple connectors increasing in the wire traveling direction.

[0013] The medical stainless steel wire inverted take-up machine with integrated infeed straightening as described above: a transmission mechanism is provided between the movable arm on the first plate and the fitting block. The transmission mechanism includes a lead screw rotatably installed on the side of the first plate and a threaded sleeve sleeved on the lead screw and threadedly connected to the lead screw, and the threaded sleeve is fixed to the movable arm.

[0014] A gear is also rotatably mounted on the frame. The rotation shaft of the gear is connected to the lead screw via a toothed belt. A toothed plate is fixedly connected to the fitting block, and the gear meshes with the teeth on the toothed plate.

[0015] The medical stainless steel wire inverted take-up machine with integrated inlet straightening as described above: the movable arm on the first plate is fixedly connected to a first tilting arm, the movable arm on the second plate is fixedly connected to a second tilting arm, and the first tilting arm and the second tilting arm are slidably fitted together.

[0016] The medical stainless steel wire inverted take-up machine with integrated infeed straightening as described above: the pneumatic mechanism includes a cylinder fixed on the frame and an assembly arm fixedly connected to the movable end of the cylinder and the fitting block, and the abutment wheel is rotatably mounted on the side of the assembly arm facing the turntable.

[0017] The medical stainless steel wire inverted take-up machine with integrated wire straightening as described above: the driven mechanism includes a sleeve slidably sleeved on the rotating shaft of the turntable and two drive rods fixedly connected to the sleeve and cooperating with the take-up mechanism. The turntable is provided with two through holes adapted to the drive rods. The through holes are located at the eccentricity of the turntable, and the two drive rods respectively pass through the two through holes and are slidably connected to the turntable. A sliding fit structure is provided between the sleeve and the fitting block.

[0018] The medical stainless steel wire inverted take-up machine with integrated inlet straightening as described above: the sliding fit structure includes a movable frame that is slidably disposed on the frame and rotatably connected to the sleeve, a drive column is fixedly provided on the fitting block, a groove adapted to the drive column is provided on the movable frame, and the drive column passes through the groove and is slidably connected to the movable frame.

[0019] The groove includes an inclined groove and a straight groove connected together. During the first part of the stroke of the abutment wheel toward the turntable, the drive column moves within the inclined groove and can cause the movable frame to move downward relative to the frame.

[0020] The medical stainless steel wire inverted take-up machine with integrated wire straightening as described above: a ground rail is provided below the frame, and the take-up mechanism includes a movable seat that is rolled on the ground rail and a free turntable on the movable seat. Multiple uprights are equidistantly arranged along the circumference of the free turntable. After the movable frame moves down relative to the frame, when the turntable rotates, the two drive rods can drive the multiple uprights and the free turntable to rotate, thereby performing the take-up action.

[0021] The medical stainless steel wire inverted take-up machine with integrated inlet straightening as described above: the side of the movable seat is provided with a limiting hole, and the movable end of the cylinder is also fixedly connected to a follower arm. The end of the follower arm away from the cylinder is fixed with a limiting rod, and the limiting rod is adapted to the limiting hole.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] Since the lengths of the multiple connectors increase in the direction of wire travel, during wire straightening, the compression of the multiple cylindrical springs increases in the direction of wire travel. That is, the pressure applied to the wire by the multiple second rollers gradually increases, enabling the multiple second rollers to perform progressive straightening of the wire. Therefore, the elastic support progressive pressure design of the present invention can effectively avoid the problem of excessive initial impact force on the wire during the straightening process, prevent the wire surface from being indented or scratched due to instantaneous overload, and prevent damage to the smoothness. It can also cause microcracks to form in the internal microstructure of the wire due to stress mutation, resulting in uneven mechanical properties of the wire and creating potential fatigue fracture hazards.

[0024] By setting up the transmission mechanism, in actual operation, the thicker the wire, that is, the greater the distance between the abutment wheel and the turntable, the greater the straightening force that the wire can receive between the first roller and the second roller. Therefore, a dynamic matching mechanism between wire thickness and straightening pressure is realized, which solves the problems of traditional equipment relying on manual experience and cumbersome model change and debugging. It realizes full-specification adaptive straightening, which can improve the efficiency of straightening and winding on the one hand, and on the other hand, through mechanical interlocking, the thickness of the wire is reflected according to the position of the abutment wheel, thereby accurately matching the pressure for wire straightening. Attached Figure Description

[0025] Figure 1 An isometric view of one embodiment of an inverted take-up machine for medical stainless steel wires with integrated inlet straightening.

[0026] Figure 2 A schematic diagram of one embodiment of an inverted take-up machine for medical stainless steel wires with integrated inlet straightening.

[0027] Figure 3 This is a schematic diagram of another angle of one embodiment of an inverted take-up machine for medical stainless steel wires with integrated inlet straightening.

[0028] Figure 4 This is a schematic diagram of the structure of an inverted take-up machine for medical stainless steel wires with integrated inlet straightening, taken from another angle.

[0029] Figure 5 for Figure 2 Enlarged view of the structure at point A in the middle.

[0030] Figure 6 An exploded view of the driven mechanism in one embodiment of an inverted take-up machine for integrating medical stainless steel wire straightening.

[0031] Figure 7 A schematic diagram of the take-up mechanism in one embodiment of an inverted take-up machine for integrating inlet straightening of medical stainless steel wire.

[0032] Figure 8A schematic diagram of the straightening fixture in one embodiment of an inverted take-up machine for integrating medical stainless steel wire straightening.

[0033] Figure 9 A side view of the straightening fixture in one embodiment of an inverted take-up machine for integrating inlet straightening of medical stainless steel wire.

[0034] Figure 10 An exploded view of the straightening fixture in one embodiment of an inverted take-up machine for integrating inlet straightening of medical stainless steel wire.

[0035] In the diagram: 1. Frame; 101. Guide wheel; 2. Ground rail; 3. Moving seat; 301. Limiting hole; 4. Free turntable; 5. Upright pole; 6. Turntable; 601. Through hole; 7. Abutment wheel; 8. Cylinder; 9. Assembly arm; 10. Fitting block; 1001. Drive column; 11. Toothed plate; 12. Gear; 13. Toothed belt; 14. Lead screw; 15. Threaded sleeve; 16. Movable frame; 1601. Inclined groove; 1602. Straight groove; 17. Sleeve; 18. Drive rod; 19. First plate; 20. Second plate; 21. First inclined arm; 22. Second inclined arm; 23. Guide column; 24. Cylindrical spring; 25. Movable arm; 26. First roller; 27. Second roller; 28. Connector; 29. ​​First slider; 30. Second slider; 31. Follower arm; 32. Limiting rod. Detailed Implementation

[0036] 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.

[0037] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Please see Figures 1-10 In this embodiment, an inverted take-up machine for medical stainless steel wire with integrated wire straightening includes a frame 1, a turntable 6 rotatably mounted on the frame 1, and a straightening fixture located on the side of the frame 1. The wire passes through the straightening fixture, goes around the turntable 6, and is taken up by a take-up mechanism located below the frame 1.

[0039] Two abutting wheels 7 located on the side of the turntable 6 are movably mounted on the frame 1. The abutting wheels 7 can be driven by a pneumatic mechanism mounted on the frame 1 to move radially along the turntable 6. The pneumatic mechanism is connected to a fitting block 10 that is slidably fitted on the frame 1. The fitting block 10 is connected to a driven mechanism mounted on the turntable 6. The driven mechanism cooperates with the take-up mechanism.

[0040] The fitting block 10 is also connected to the straightening fixture, which includes a first plate 19 and a second plate 20 fixed to the side of the frame 1. The first plate 19 and the second plate 20 are perpendicular to each other, and both are rotatably mounted with a plurality of first rollers 26 and a second roller 27 that is movably provided and intersects with the plurality of first rollers 26. The second roller 27 is connected to an elastic pressure mechanism. When the abutting wheel 7 moves toward the turntable 6, the elastic pressure mechanism is triggered, which can cause the pressure of the second roller 27 on the wire to decrease.

[0041] In this embodiment, it should be further explained that a plurality of guide rollers 101 are also provided on the frame 1. During operation, the wire passes between the plurality of first rollers 26 and second rollers 27. The plurality of guide rollers 101 guide the wire so that the wire is wound around the turntable 6 several times and then connected to the take-up mechanism.

[0042] Subsequently, the pneumatic mechanism drives the abutment wheel 7 to move toward the turntable 6 until the abutment wheel 7 abuts against the wire on the outer wall of the turntable 6. The turntable 6 is designed to determine the initial shape of the wire (i.e., to perform circumferential bending on the wire), and to improve the smoothness of the winding mechanism in winding the wire. During operation, the turntable 6 rotates, winding the wire on one side so that the wire can be straightened by the straightening fixture, and releasing the wire on the other side so that the winding mechanism can wind the wire.

[0043] During the initial stroke of the abutting wheel 7 moving toward the turntable 6, the driven mechanism is triggered, enabling relative movement with the turntable 6 and engagement with the take-up mechanism. Subsequently, when the turntable 6 rotates, the driven mechanism drives the take-up mechanism to perform a winding action on the wire.

[0044] Furthermore, the first plate 19 and the second plate 20 are perpendicular to each other, that is, the central axes of the first roller 26 (second roller 27) on the two are spatially perpendicular. In this way, when the wire passes through the first plate 19 and the second plate 20, it can be subjected to straightening forces in different directions, ensuring the comprehensiveness of the straightening process and improving the straightening effect.

[0045] As a further aspect of the present invention, since the first roller 26 and the second roller 27 on the first plate 19 and the second plate 20 are the same, and only the installation orientation is different, the first plate 19 will be described in detail below.

[0046] Please see Figure 8 and Figure 10 The first plate 19 is provided with a guide groove. The elastic pressure mechanism includes a guide post 23 fixed in the guide groove and a cylindrical spring 24 sleeved on the outer periphery of the guide post 23. A first slider 29 and a second slider 30 are slidably fitted in the guide groove. The two ends of the cylindrical spring 24 are respectively connected to the first slider 29 and the second slider 30. A second roller 27 is rotatably mounted on the second slider 30. A plurality of first sliders 29 are connected to a position adjustment assembly provided on the first plate 19. The position adjustment assembly can drive the first sliders 29 to slide in the guide groove to change the compression of the cylindrical spring 24. The position adjustment assembly includes a movable arm 25 slidably disposed on the first plate 19. The movable arm 25 is fixedly connected to a plurality of first sliders 29 by a plurality of connecting members 28, and the lengths of the plurality of connecting members 28 increase in the direction of wire travel.

[0047] It should be noted that slide rails (not labeled in the figure) are provided on both sides of the first plate 19, and the slide rails are used to guide the movable arm 25;

[0048] In this embodiment, since the lengths of the multiple connectors 28 increase in the direction of wire travel, the compression of the multiple cylindrical springs 24 increases in the direction of wire travel during wire straightening. That is, the pressure applied to the wire by the multiple second rollers 27 gradually increases, enabling the multiple second rollers 27 to perform progressive straightening of the wire. Therefore, the elastic support progressive pressure design of the present invention can effectively avoid the problem of excessive initial impact force on the wire during the straightening process, prevent the wire surface from being indented or scratched due to instantaneous overload, and prevent damage to the smoothness. It can also prevent the microstructure inside the wire from forming microcracks due to stress mutation, resulting in uneven mechanical properties of the wire and creating a hidden danger of fatigue fracture.

[0049] As a further embodiment of the present invention, please refer again. Figure 5 , Figure 6 as well as Figure 8A transmission mechanism is provided between the movable arm 25 located on the first plate 19 and the fitting block 10. The transmission mechanism includes a lead screw 14 rotatably mounted on the side of the first plate 19 and a threaded sleeve 15 sleeved on the lead screw 14 and threadedly connected to the lead screw 14. The threaded sleeve 15 is fixed to the movable arm 25. A gear 12 is also rotatably mounted on the frame 1. The rotation shaft of the gear 12 is connected to the lead screw 14 through a toothed belt 13. A toothed plate 11 is fixedly connected to the fitting block 10. The gear 12 meshes with the teeth on the toothed plate 11.

[0050] With attachment Figure 4 Taking the state shown as an example, at this time, the abutting wheel 7 abuts against the wire wound around the outer periphery of the turntable 6, and this state is the wire winding state;

[0051] When it is necessary to wind wires of different diameters, in order to facilitate the wires to pass around the turntable 6, the pneumatic mechanism is controlled to drive the abutment wheel 7 to move away from the turntable 6. During this process, the toothed plate 11 will drive the gear 12 to rotate. Then, the rotating shaft of the gear 12 will drive the lead screw 14 to rotate through the toothed belt 13. The threaded sleeve 15 will be threadedly engaged with the lead screw 14. The threaded sleeve 15 will drive the movable arm 25 to move towards the first roller 26. The movable arm 25 will drive the first slider 29 to move together through the connecting piece 28, so that the compression of the multiple cylindrical springs 24 will increase synchronously on the basis of increasing in the direction of wire travel.

[0052] By setting up the transmission mechanism, in actual operation, the thicker the wire, that is, the greater the distance between the abutment wheel 7 and the turntable 6, the greater the straightening force that the wire can be subjected to between the first roller 26 and the second roller 27. Therefore, a dynamic matching mechanism between wire thickness and straightening pressure is realized, which solves the problems of traditional equipment relying on manual experience and cumbersome model change and debugging. It realizes full-specification adaptive straightening, which can improve the efficiency of straightening and winding on the one hand, and on the other hand, through mechanical interlocking, the thickness of the wire is reflected according to the position of the abutment wheel 7, thereby accurately matching the pressure for wire straightening.

[0053] Please refer to it again. Figure 9 The movable arm 25 located on the first plate 19 is fixedly connected to a first tilting arm 21, and the movable arm 25 located on the second plate 20 is fixedly connected to a second tilting arm 22, and the first tilting arm 21 and the second tilting arm 22 are slidably fitted together.

[0054] In this embodiment, when the lead screw 14 rotates, driving the movable arm 25 located on the first plate 19 to move, the movable arm 25 will drive the movable arm 25 located on the second plate 20 to move synchronously through the first tilting arm 21 and the second tilting arm 22. The first tilting arm 21 and the second tilting arm 22 slide relative to each other, realizing the synchronous adjustment function of the compression of the column spring 24 on the first plate 19 and the second plate 20.

[0055] In detail, the first tilting arm 21 and the second tilting arm 22 form a deformable triangular linkage mechanism, and one end of the first tilting arm 21 and the second tilting arm 22 are respectively fixed to the two movable arms 25, thereby forming two fixed points;

[0056] Please see Figure 9 The first tilting arm 21, the second tilting arm 22, the first plate 19, and the second plate 20 form a deformable triangle.

[0057] Side ①: The total length of the first tilting arm 21 and the second tilting arm 22 (variable, since the second tilting arm 22 can slide out from the first tilting arm 21).

[0058] Side ②: The distance from the movable arm 25 (connected to the first plate 19) to the wire axis (determined by the vertical position of the movable arm 25 (connected to the first plate 19));

[0059] Side ③: The distance from the movable arm 25 (connected to the second plate 20) to the wire axis;

[0060] When the vertical position of the movable arm 25 (connected to the first plate 19) changes, the first tilting arm 21 is forcibly pulled downward by the movable arm 25 (connected to the first plate 19);

[0061] Since the second tilting arm 22 must remain fixedly connected to the movable arm 25 (connected to the second plate 20), and the movable arm 25 (connected to the second plate 20) can only move in a specific direction, the movement of the second tilting arm 22 is restricted to moving in the direction of the wire.

[0062] The geometric constraint requirement of the triangle is that when the first tilting arm 21 is radially displaced (side ② decreases), in order to keep the triangle closed, the second tilting arm 22 must be forcibly inserted into the first tilting arm 21 by a certain distance (side ① decreases).

[0063] As a further embodiment of the present invention, please refer again. Figure 3 , Figure 5 as well as Figure 6The pneumatic mechanism includes a cylinder 8 fixed on the frame 1 and an assembly arm 9 fixedly connected to the movable end of the cylinder 8 and the fitting block 10. The abutment wheel 7 is rotatably mounted on the side of the assembly arm 9 facing the turntable 6.

[0064] In this embodiment, when the cylinder 8 is working, it can drive the assembly arm 9 to move the abutment wheel 7 toward the turntable 6, so that the abutment wheel 7 contacts the wire wrapped on the outer wall of the turntable 6. At the same time, the assembly arm 9 drives the fitting block 10 to move together, and drives the rack plate 11 to move synchronously.

[0065] It should be noted that after the abutment wheel 7 presses the wire onto the turntable 6, the upright begins to wind the wire. At this time, the assembly arm 9, the fitting block 10, and the rack plate 11 all remain in fixed positions.

[0066] As a further embodiment of the present invention, the driven mechanism includes a sleeve 17 slidably sleeved on the rotating shaft of the turntable 6 and two drive rods 18 fixedly connected to the sleeve 17 and cooperating with the take-up mechanism. The turntable 6 is provided with two through holes 601 adapted to the drive rods 18. The through holes 601 are located at the eccentricity of the turntable 6, and the two drive rods 18 respectively pass through the two through holes 601 and are slidably connected to the turntable 6. A sliding fit structure is provided between the sleeve 17 and the fitting block 10. The sliding fit structure includes a movable frame 16 slidably mounted on the frame 1 and rotatably connected to the sleeve 17. A drive column 1001 is fixedly mounted on the fitting block 10. The movable frame 16 is provided with a groove adapted to the drive column 1001. The drive column 1001 passes through the groove and is slidably connected to the movable frame 16. The groove includes an inclined groove 1601 and a straight groove 1602 connected together. During the initial stroke of the abutment wheel 7 moving towards the turntable 6, the drive column 1001 moves within the inclined groove 1601 and can cause the movable frame 16 to move downward relative to the frame 1.

[0067] As a further embodiment of the present invention, please refer again. Figure 7 The frame 1 is provided with a ground rail 2 below it. The take-up mechanism includes a movable seat 3 that is rolled on the ground rail 2 and a free turntable 4 on the movable seat 3. Multiple uprights 5 are provided at equal intervals along the circumference of the free turntable 4. After the movable frame 16 moves down relative to the frame 1, when the turntable 6 rotates, the two drive rods 18 can drive the multiple uprights 5 and the free turntable 4 to rotate, thus performing the take-up action.

[0068] In this embodiment, specifically, during the initial stroke of the cylinder 8 driving the assembly arm 9 to move the abutment wheel 7 toward the turntable 6, the fitting block 10 drives the drive column 1001 through the inclined groove 1601. At this time, the drive column 1001 slides with the movable frame 16 through the inclined groove 1601, causing the movable frame 16 to slide downward relative to the frame 1. Correspondingly, the movable frame 16 drives the sleeve 17 to move downward on the rotation axis of the turntable 6, causing the drive rod 18 to move downward. The bottom end of the drive rod 18 is lower than the top end of the upright 5. Then, in the subsequent working process, the turntable 6 rotates, and the drive rod 18 can drive the upright 5 and the free turntable 4 to rotate, so that the wire released on the turntable 6 is wound onto multiple uprights 5.

[0069] Therefore, the drive rod 18 can move down synchronously as the abutment wheel 7 moves toward the turntable 6, and engage with the take-up mechanism, so that the operator can push the movable seat 3 from the ground rail 2 to below the frame 1 before the start of work.

[0070] As a further embodiment of the present invention, please refer again. Figure 4 and Figure 7 The movable seat 3 is provided with a limiting hole 301 on its side. The movable end of the cylinder 8 is also fixedly connected to a follower arm 31. A limiting rod 32 is fixed at the end of the follower arm 31 away from the cylinder 8. The limiting rod 32 is adapted to the limiting hole 301.

[0071] With attachment Figure 3 Taking the illustrated state as an example, at this time, the movable seat 3 is located below the frame 1, the abutting wheel 7 is in contact with the wire wound on the turntable 6, and the limiting rod 32 extends into the limiting hole 301. Therefore, it can effectively limit the movable seat 3, avoiding the problem that the movable seat 3 will shift during the winding process, making it difficult to continue winding normally. After the work is completed, the cylinder 8 drives the abutting wheel 7 to move away from the turntable 6. Correspondingly, the drive rod 18 is lifted, and the follower arm 31 drives the limiting rod 32 to be pulled out from the limiting hole 301, making it convenient for the operator to remove the winding mechanism from below the frame 1.

[0072] 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.

[0073] 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. An inverted take-up machine for medical stainless steel wire with integrated wire straightening, comprising a frame, a turntable rotatably mounted on the frame, and a straightening fixture located on the side of the frame. The wire passes through the straightening fixture, goes around the turntable, and is taken up by a take-up mechanism located below the frame. Its features are, Two abutting wheels located on the side of the turntable are movably mounted on the frame. The abutting wheels can be driven by a pneumatic mechanism mounted on the frame to move radially along the turntable. The pneumatic mechanism is connected to a fitting block that slides on the frame. The fitting block is connected to a driven mechanism mounted on the turntable. The driven mechanism cooperates with the take-up mechanism. The fitting block is also connected to the straightening fixture, which includes a first plate and a second plate fixed to the side of the frame. The first plate and the second plate are perpendicular to each other, and both are rotatably mounted with multiple first rollers and movably provided with second rollers that intersect with the multiple first rollers. The second rollers are connected to an elastic pressure mechanism. When the abutting roller moves toward the turntable, the elastic pressure mechanism is triggered, which can cause the pressure of the second roller on the wire to decrease. The first plate is provided with a guide groove. The elastic pressure mechanism includes a guide post fixed in the guide groove and a cylindrical spring sleeved on the outer periphery of the guide post. A first slider and a second slider are also slidably fitted in the guide groove. The two ends of the cylindrical spring are respectively connected to the first slider and the second slider. The second roller is rotatably mounted on the second slider. The first sliders are connected to a position adjustment assembly disposed on the first plate. The position adjustment assembly can drive the first sliders to slide in the guide groove to change the compression of the cylindrical spring. The position adjustment component includes a movable arm that is slidably disposed on the first plate. The movable arm is fixedly connected to a plurality of the first sliders by a plurality of connectors, and the length of the plurality of connectors increases in the direction of wire travel. The movable arm located on the first plate is fixedly connected to a first tilting arm, and the movable arm located on the second plate is fixedly connected to a second tilting arm, and the first tilting arm and the second tilting arm are slidably fitted together.

2. The medical stainless steel wire inverted take-up machine with integrated feed straightening as described in claim 1, characterized in that, A transmission mechanism is provided between the movable arm located on the first plate and the fitting block. The transmission mechanism includes a lead screw rotatably mounted on the side of the first plate and a threaded sleeve sleeved on the lead screw and threadedly connected to the lead screw. The threaded sleeve is fixed to the movable arm. A gear is also rotatably mounted on the frame. The rotation shaft of the gear is connected to the lead screw via a toothed belt. A toothed plate is fixedly connected to the fitting block, and the gear meshes with the teeth on the toothed plate.

3. The medical stainless steel wire inverted take-up machine with integrated feed straightening as described in claim 1, characterized in that, The pneumatic mechanism includes a cylinder fixed to the frame and an assembly arm fixedly connected to the movable end of the cylinder and the fitting block. The abutment wheel is rotatably mounted on the side of the assembly arm facing the turntable.

4. The medical stainless steel wire inverted take-up machine with integrated feed straightening as described in claim 3, characterized in that, The driven mechanism includes a sleeve slidably sleeved on the rotating shaft of the turntable and two drive rods fixedly connected to the sleeve and cooperating with the take-up mechanism. The turntable is provided with two through holes adapted to the drive rods. The through holes are located at the eccentricity of the turntable, and the two drive rods respectively pass through the two through holes and are slidably connected to the turntable. A sliding fit structure is provided between the sleeve and the fitting block.

5. A medical stainless steel wire inverted take-up machine with integrated feed straightening as described in claim 4, characterized in that, The sliding fit structure includes a movable frame that is slidably disposed on the frame and rotatably connected to the sleeve, a drive column that is fixedly provided on the fitting block, a groove that is adapted to the drive column on the movable frame, and the drive column passing through the groove and slidably connected to the movable frame. The groove includes an inclined groove and a straight groove connected together. During the first part of the stroke of the abutment wheel toward the turntable, the drive column moves within the inclined groove and can cause the movable frame to move downward relative to the frame.

6. The medical stainless steel wire inverted take-up machine with integrated feed straightening as described in claim 5, characterized in that, The frame is provided with a ground rail below it. The take-up mechanism includes a movable seat that is rolled on the ground rail and a free turntable on the movable seat. Multiple uprights are provided at equal intervals along the circumference of the free turntable. After the movable frame moves down relative to the frame, when the turntable rotates, the two drive rods can drive the multiple uprights and the free turntable to rotate, thereby performing the take-up action.

7. A medical stainless steel wire inverted take-up machine with integrated feed straightening as described in claim 6, characterized in that, The side of the movable seat is provided with a limiting hole, and the movable end of the cylinder is also fixedly connected to a follower arm. The end of the follower arm away from the cylinder is fixed with a limiting rod, and the limiting rod is adapted to the limiting hole.

Images