A winding tool and a winding method based on a cos theta type coil double layer cable

Abstract

The application discloses a winding tool and a winding method based on a cos theta type coil double-layer cable, relates to the technical field of coil winding, and comprises a framework, a wire slot, a plurality of occupying strips and a first limiting piece. The wire slot is arranged on the framework and is composed of two curved groove sections and a straight groove section. The plurality of occupying strips are adapted to the arc shape of the curved groove sections and are used for filling the groove bottoms of the curved groove sections, so that when any occupying strip is taken out, the groove bottom can be exposed to form a storage area for accommodating the cable. The first limiting piece can cover the curved groove sections and is used for applying a pressing force of the occupying strips to the groove bottoms of the curved groove sections. Through the mode that the occupying strips fill the curved groove sections, the application realizes accurate control of the cable position, the single occupying strip is taken out to expose the storage area, the cable can be accurately positioned in the curved section with complex arc, and the first limiting piece continuously presses the occupying strips, so that the cable displacement or loosening in the winding process is effectively prevented, and the winding precision and the coil forming quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coil winding, in particular to a winding tool and method based on a cosθ type coil double-layer cable. BACKGROUND

[0002] The cosθ type coil (also known as the saddle type coil) has important applications in particle accelerators and plasma confinement devices. The saddle type coil is composed of curved segments at both ends and a straight segment in the middle. The coil is formed by winding along the axial surface of a cylinder. During the winding process, the cable is not under tension or is under unstable tension. Problems such as bending and springback, and difficulty in fixing the shape, may occur during the winding process.

[0003] After searching, the patent document with the authorization announcement number CN216389064U discloses a transverse magnetic field two-dimensional curved surface coil winding tool, which includes a limiting ring, a center pressing plate and a winding base. The limiting ring, the center pressing plate and the winding base are arranged from top to bottom. The shape of the winding base matches the shape of the coil to be wound, so that the wire to be wound can be attached to the winding base and shaped according to the shape of the outer wall of the winding base. The center pressing plate is tightly attached to the center of the winding base. The shape of the center pressing plate is consistent with the shape of the central hollow of the coil to be wound. The center pressing plate is used for the wire to be wound to surround itself and adhere to the winding base to form a shape. The limiting ring is in the shape of a half ring. The shape of the half ring matches the shape of the winding base. The limiting ring is fixed above the center pressing plate and close to the winding base. Multiple limiting rings are parallel to each other and spaced apart. The limiting ring is close to the inner wall of the winding base and leaves a gap between the outer wall of the winding base for the wire to be wound to pass through.

[0004] The above-mentioned winding tool relies on the limiting ring to press and limit the straight segment of the saddle type coil to complete the winding work. However, as known from the foregoing, the saddle type coil has a straight segment and a curved segment. During the winding process, only the straight segment is fixed and limited, and the curved segment is not fixed and limited, which may cause the cable at the curved segment to be in a loose state, and the shape of the wound coil may not be fixed well. When the coil to be wound is multi-layer, the multi-layer cable in the wound coil cannot be arranged in order and close to each other, and the winding effect is not ideal.

[0005] Since the quality of the winding directly affects the performance of the magnetic field and the number of excitation exercises of the entire magnet, in order to meet the demand for stability of the magnet, it is urgent to develop a winding tool based on the cosθ type coil to assist in winding. SUMMARY

[0006] The purpose of the present application is to solve the problems in the prior art, and provide a winding tool based on a cosθ type coil double-layer cable.

[0007] To solve the above problems, the present application provides the following technical solutions:

[0008] A winding tool based on a cosθ type coil double-layer cable, comprising:

[0009] A framework;

[0010] A wire slot formed on the framework and composed of two curved groove sections and a straight groove section between the two curved groove sections;

[0011] A plurality of space-occupying strips adapted to the arc shape of the curved groove sections and used to fill the groove bottoms of the curved groove sections, so that when any space-occupying strip is removed, the groove bottom can expose a storage area for accommodating the cable;

[0012] A first limiting member that can be covered on the curved groove sections and used to apply a pressing force to the space-occupying strips towards the groove bottoms of the curved groove sections.

[0013] As a further scheme of the present application, the first limiting member is movably connected to the framework.

[0014] As a further scheme of the present application, the first limiting member includes a baffle with a slot hole formed therein, the slot hole can be sleeved outside the first screw on the framework to realize the sliding assembly of the baffle, one end of the slot hole is designed as an expanded mouth, and the inner diameter of the expanded mouth end is greater than the diameter of the first screw, so that when the expanded mouth end is slidably sleeved outside the first screw, the baffle can be removed from the first screw.

[0015] As a further scheme of the present application, a convex rib is arranged at the middle position of the groove bottom of the wire slot and flush with the groove opening of the wire slot, so as to divide the wire slot into two groups of sub-slots, the two groups of sub-slots are divided into outer sub-slots and inner sub-slots according to different positions on the framework, the plurality of space-occupying strips are arranged at the groove bottoms of the two sub-slots, and a notch is formed in the convex rib to allow the cable on one sub-slot to be transitionally sleeved on the other sub-slot.

[0016] As a further scheme of the present application, the winding tool further comprises a pressing belt arranged in the sub-slot and abutting against the top of the space-occupying strip, the sum of the thicknesses of the pressing belt and the space-occupying strip is equal to the groove depth of the sub-slot; and the baffle is used to apply a pressing force to the pressing belt towards the groove bottom of the curved groove section.

[0017] As a further scheme of the present application: the winding tool further comprises a second limiting member which can be covered on the straight slot section and used to apply a pressing force to the cable in the straight slot section.

[0018] As a further scheme of the present application: the second limiting member comprises a blocking strip and a pressing block, the blocking strip is provided with a slot hole, the pressing block is arranged in the straight slot section and used to abut against the top of the cable, the slot hole can be sleeved on the outside of the second screw on the framework to realize the sliding assembly of the blocking strip, and the blocking strip can be slid to the straight slot section to apply a pressing force to the pressing block towards the bottom of the straight slot section.

[0019] As a further scheme of the present application: the blocking plate is provided with an observation hole part, and the framework is provided with a pin used to stop the position of the blocking plate.

[0020] The present application further provides a winding method of the winding tool based on the cosθ type coil double-layer cable, in the presence of the convex rib, the slot is divided into two groups of sub-slots, the two groups of sub-slots are divided into outer sub-slots and inner sub-slots according to the different positions on the framework, and the corresponding number of layers of cables can be wound according to the slot depth of the slot, and the method comprises the following steps:

[0021] Step one: according to the position of the wire inlet on the framework, one of the two winding modes of first outer sub-slot and then inner sub-slot and first inner sub-slot and then outer sub-slot is selected in advance;

[0022] Step two: the winding starts from one of the curved slot section and the straight slot section, if a curved slot section of the sub-slot is selected as the starting point, the occupying strip at the corresponding position in the curved slot section needs to be taken out first to expose the placement area for the single cable to pass through and walk, and the cable is wound on the curved slot section according to the position of the placement area; after the winding of the curved slot section is completed, the cable and the remaining occupying strips are laid flat on the bottom of the curved slot section;

[0023] Step three: then the blocking plate at the position of the curved slot section is slid to cover the cable and the remaining occupying strips to apply a pressing force towards the bottom of the slot, so that the laying state of the cable and the remaining occupying strips can be maintained;

[0024] Step four: since the cable has been position-limited by the aforementioned placement area, and the straight slot section is located between the two curved slot sections, the subsequent cable will naturally walk in the straight slot section, after the walking is completed, the pressing block at the position of the straight slot section is covered on the cable, and the blocking strip is slid on the pressing block, so that the blocking strip and the pressing block apply a pressing force to the cable towards the bottom of the slot;

[0025] Step five: since the single-turn coil is composed of two groups of curved groove segments and two groups of straight groove segments, the winding work of the curved groove segments and the straight groove segments is repeated, so that the remaining one group of curved groove segments and one group of straight groove segments are wound, and the winding work of the first-turn cable is completed, at this time, each baffle, blocking strip and pressing block on the framework is in a covering and pressing state;

[0026] Step six: when the cable is continuously wound, the pressing force on the groove segment position needs to be released first, and after the winding at the corresponding position is completed, the pressing force needs to be applied to the position again, so that the multi-turn winding of the cable in the corresponding sub-groove is completed;

[0027] Step seven: the cable is transferred to another sub-groove through the notch on the convex rib, and the winding mode of the cable in the sub-groove is the same as described above, and after the winding is completed, the cable can be pulled out from the outlet.

[0028] As a further scheme of the application: when the groove depth of the wire groove is set to accommodate the winding double-layer cable, the inlet wire and the outlet wire are arranged at the same end of the framework, and four groups of occupying strips are laid in the outer sub-groove and the inner sub-groove, the method comprises the following steps:

[0029] Step one: according to the position of the inlet port on the framework at this time, the winding mode of the outer sub-groove first and then the inner sub-groove is preformed;

[0030] Step two: starting from the curved groove segment of the outer sub-groove close to the inlet port, the occupying strip close to the outermost wall in the curved groove segment is taken out first to expose the storage area for the single cable to pass through, and the cable is wound on the curved groove segment according to the position of the storage area, after the winding of the curved groove segment is completed, the cable and the remaining occupying strips are laid together on the groove bottom of the curved groove segment;

[0031] Step three: then slide the baffle at the position of the curved groove segment to cover the cable and the remaining occupying strips to apply a pressing force towards the groove bottom, so that the laying state of the cable and the remaining occupying strips is maintained;

[0032] Step four: since the cable has been position-limited by the aforementioned storage area, and the straight groove segment is located between the two curved groove segments, the subsequent cable will naturally walk in the straight groove segment, after the walking is completed, the pressing block at the position of the straight groove segment is covered on the cable, and the blocking strip is slid on the pressing block, so that the blocking strip and the pressing block apply a pressing force towards the groove bottom to the cable;

[0033] Step five: since the single-turn coil is composed of two groups of curved groove segments and two groups of straight groove segments, the winding work of the curved groove segments and the straight groove segments is repeated, so that the remaining one group of curved groove segments and one group of straight groove segments are wound, and the winding work of the first-turn cable is completed, at this time, each baffle, blocking strip and pressing block on the framework is in a covering and pressing state;

[0034] Step six: continue to wind the cable, according to the wound groove segment position, the pressing force on it is removed, and then the three groups of occupying strips from outside to inside are taken out in turn, and the winding of the second turn cable, the third turn cable and the fourth turn cable is completed in turn, after the complete winding of the outer auxiliary groove is completed, the corresponding pressing force is arranged on the corresponding groove segment, so that the cable in the outer auxiliary groove is wound in the form of diameter reduction in turn.

[0035] Step seven: the cable is transferred and arranged in the inner auxiliary groove through the notch on the convex rib, and the winding mode of the cable in the inner auxiliary groove is consistent with that of the outer auxiliary groove; after the winding of the inner auxiliary groove is completed, only the winding of the single layer cable in the wire slot is completed.

[0036] Step eight: since the groove depth of the wire slot is set to accommodate the winding of double layer cable, then the winding mode of the inner auxiliary groove first and the outer auxiliary groove is carried out, and then the notch of the curved groove segment and the straight groove segment is exposed by releasing the pressing of the baffle and the pressing belt on the curved groove segment and the pressing of the stop bar and the pressing block on the straight groove segment in turn, and then the cable is wound in the form of diameter expansion in the inner auxiliary groove in turn, for the curved groove segment, the baffle is used for pressing after each winding, and for the straight groove segment, the stop bar is used for pressing after each winding.

[0037] Step nine: the cable is transferred and arranged in the outer auxiliary groove through the notch on the convex rib, and then the cable is wound in the form of diameter expansion in the outer auxiliary groove in turn due to the support of the convex rib, for the curved groove segment, the baffle is used for pressing after each winding, and for the straight groove segment, the stop bar is used for pressing after each winding.

[0038] Step ten: after the winding of the cable in the outer auxiliary groove is completed, the cable is arranged out of the outlet, and the winding work is completed.

[0039] Compared with the prior art, the present application has the following beneficial effects:

[0040] 1、The present application realizes the precise control of the cable position by filling the curved groove segment with the occupying strips, and when used, a single occupying strip can expose the placement area, so that the cable can be precisely positioned in the curved segment with complex curvature; cooperating with the continuous pressing of the first limiting piece on the occupying strip, the cable displacement or looseness in the winding process is effectively prevented, the cables between turns are arranged closely, and the winding precision and coil forming quality are improved.

[0041] 2. The first screw, the second screw, the pin, the column nail, the baffle and the baffle bar are all set to be detachable. After completing the corresponding winding work, the above components can be removed so that the saddle-shaped coil is composed of only the skeleton and the saddle-shaped cable. The saddle-shaped cable is attached to the skeleton. The skeleton can be installed in the corresponding position for use later. There is no need to remove the saddle-shaped cable for use. The use method is convenient and flexible.

[0042] 3. The design of the movable connection between the first limiter and the frame greatly improves the operational flexibility. The limiter can be quickly adjusted or removed during use to meet the needs of different winding stages. It is also convenient for maintenance and replacement of parts, simplifying the use process of the entire tooling.

[0043] 4. The slotted hole flaring design of the baffle enables efficient assembly and disassembly. During sliding assembly, the size of the flared end matches the screw, allowing the baffle to be installed and removed with one hand. The slotted hole structure takes into account both positioning stability and operational convenience, improving work efficiency.

[0044] 5. The rib-separated dual-slot structure optimizes space utilization, dividing the trough into inner and outer sub-slots, supporting independent layered winding. The notch design allows for smooth transitions between cables across the trough, preventing bending damage. The evenly spaced spacers ensure consistent winding accuracy across each sub-slot. The ribs effectively divide a single, larger-width trough into two smaller-width sub-slots. The smaller-width sub-slots accommodate fewer turns of cable, allowing cables to be arranged closely together for optimal winding results.

[0045] 6. The pressing belt design is adapted to the requirements of double-layer winding. The sum of the thickness of the pressing belt and the placeholder strip is equal to the groove depth, providing a flat base surface for the second layer of cables. The baffle directly presses the pressing belt to form a double limit to ensure the stability and density of the double-layer cable structure.

[0046] 7. The second limiter fills the blind spot of the straight section control. By covering the straight slot section and applying corresponding pressure, it forms a complete pressing system with the curved section limiter to ensure that the cables in the entire slot section are not loose, eliminating the defect of easy deviation of the straight section of traditional tooling.

[0047] 8. The retaining bar can be quickly positioned by sliding the assembly through the slot, and the pressure block directly contacts the cable to disperse the pressure; the split structure simplifies the assembly process while ensuring that the straight section of the cable is evenly compressed.

[0048] 9. The baffle opening facilitates real-time monitoring of cable status and prevents winding defects; the pins provide mechanical stops to prevent the baffle from accidentally slipping during the pressing process, ensuring the stability of the tooling.

[0049] 10. The winding method establishes a standardized winding process: through step-by-step operations (placeholder strip extraction → pressing → cross-slot transfer) to achieve controllable winding of complex paths; dynamic pressing management (immediate pressing after winding, and release before new winding) to ensure that the position of each turn of the cable is fixed; and a reduced-diameter winding strategy to maximize the use of space in the slot by gradually taking the placeholder strip.

[0050] 11. In the case of winding a double-layer cable, the winding method adopts a "first outer and then inner reduced-diameter winding of a single layer → reverse expanded-diameter winding of a double layer" layering strategy to avoid cable interference; innovatively uses the physical support of the skeleton and the protruding ribs to achieve expanded-diameter winding, breaking through the traditional single-layer limitation; and designs the entry / exit of the cable on the same side to simplify end processing and improve compatibility.

[0051] 12. The present application can change the starting position of cable winding by widening the curved slot section or adding a side slot. When the widened curved slot section is selected, the curved slot section is used as the starting winding position; when the side slot is selected, the straight slot section is used as the starting winding position. The two different winding methods can be adaptively selected by the user according to the corresponding requirements, further widening the application range of the tooling. BRIEF DESCRIPTION OF DRAWINGS

[0052] The present application will be further described below with reference to the accompanying drawings.

[0053] Figure 1 is a perspective structural schematic diagram of the present application Figure 1 ;

[0054] Figure 2 is a front view structural schematic diagram of Figure 1 ;

[0055] Figure 3 is a top view structural schematic diagram of Figure 1 ;

[0056] Figure 4 is an exploded structural schematic diagram of Figure 1 state;

[0057] Figure 5 is a structural schematic diagram of the skeleton and the wire slot structure thereon of the present application;

[0058] Figure 6 is a partial cross-sectional structural schematic diagram of the present application;

[0059] Figure 7 is a perspective structural schematic diagram of the baffle in the present application Figure 1 ;

[0060] Figure 8 is a perspective structural schematic diagram of the baffle in the present application Figure 2 ;

[0061] Figure 9Is the blocking strip three-dimensional structure schematic diagram in the application;

[0062] Figure 10 Is the cable structure schematic diagram after winding in the application;

[0063] Figure 11 Is the skeleton and cable three-dimensional structure schematic diagram in the application;

[0064] Figure 12 Is the structure schematic diagram of the lower layer cable jumper to the upper layer cable in the application;

[0065] Figure 13 Is the structure schematic diagram of the inner cable in the outer auxiliary groove to the inner auxiliary groove in the application;

[0066] Figure 14 Is the three-dimensional structure schematic diagram of the application Figure 2 ;

[0067] Figure 15 Is Figure 14 the enlarged structure schematic diagram of A in the application;

[0068] Figure 16 Is the three-dimensional structure schematic diagram of the application Figure 3 .

[0069] In the figure: 1, skeleton; 2, wire slot; 201, curved slot section; 202, straight slot section; 3, occupying strip; 4, baffle; 5, first screw; 6, convex rib; 601, notch; 7, outer auxiliary groove; 8, inner auxiliary groove; 9, pressing belt; 10, blocking strip; 11, pressing block; 12, second screw; 13, observation hole part; 14, pin; 15, first groove; 16, second groove; 17, side groove; a, incoming and outgoing line position; b, upper layer cable; c, lower layer cable; d, storage area. DETAILED DESCRIPTION

[0070] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0071] Embodiment one:

[0072] As Figures 1-16As shown, a winding tool based on a cosθ type coil double-layer cable includes a skeleton 1, the skeleton 1 is selected as a cylindrical shape, and a cosθ type (or saddle type) wire slot 2 is arranged at the upper and lower positions of the skeleton 1. As known from the foregoing, the saddle type coil to be wound is composed of two curved sections at both ends and a straight section in the middle. Therefore, the wire slot 2 is composed of two curved groove sections 201 and a straight groove section 202 located between the two curved groove sections 201. The number of curved groove sections 201 and straight groove sections 202 is two groups.

[0073] Meanwhile, the winding tool also includes a plurality of occupation bars 3 with an arc shape matching the curved groove section 201. The plurality of occupation bars 3 fill the groove bottom of the curved groove section 201 in a tiled form. This state can be represented by Figure 14 and Figure 15 . Figure 14 Only the case of placing a plurality of occupation bars 3 in the curved groove section 201 on the right side is shown in the figure. In order to ensure that the tiled state of the plurality of occupation bars 3 in the groove bottom is stably maintained, the winding tool also includes a first limiting member. The first limiting member is used to cover the slot opening of the curved groove section 201 and applies a pressing force towards the groove bottom to the curved groove section 201, so as to limit the occupation bars 3 in the curved groove section 201, thereby stably maintaining the tiled state of the plurality of occupation bars 3. It should be noted that the size of the occupation bar 3 is matched with the diameter of the cable to be subsequently arranged.

[0074] Based on the combination design of the skeleton 1, the wire slot 2 arranged on the skeleton 1, the plurality of occupation bars 3 placed in the wire slot 2, and the first limiting member, the use process of the present application is as follows: according to the position of the wire inlet arranged on the skeleton 1, the cable is inserted into the nearest curved groove section 201 or straight groove section 202 from the wire inlet, and then the corresponding arrangement work is carried out according to the groove shape of the wire slot 2, until the whole winding work of the wire slot 2 is completed, and then the cable is taken out from the wire outlet. When the wire inlet is close to the curved groove section 201, the first limiting member needs to be removed from the curved groove section 201 before the cable enters the nearest curved groove section 201, and then one of the occupation bars 3 in the corresponding position of the curved groove section 201 is taken out according to the position of the cable to be arranged, so as to expose the groove bottom to form a storage area for accommodating the cable. The subsequent cable will run and be arranged in the storage area. In the presence of the remaining occupation bars 3, the cable replaces the removed occupation bar 3, so that the position of the cable in the groove bottom is stably maintained, and the first limiting member is covered on the curved groove section 201 again to press the tiled state of the cable and the remaining occupation bars 3. When the wire inlet is close to the straight groove section 202, the cable can be directly arranged in the straight groove section 202 until it reaches the curved groove section 201. At this time, the arrangement work of the cable in the curved groove section 201 is the same as described above.

[0075] The application first divides the wire slot 2 into a curved slot section 201 and a straight slot section 202 according to the slot shape, and then sets a plurality of occupying strips 3 in a flat state in the divided curved slot section 201 based on the defects of the curved slot section 201 in the actual winding work. The occupying strip 3 at the corresponding position is taken out according to the position of the cable to be wound, so that the cable replaces the taken-out occupying strip 3 and fills the slot bottom of the curved slot section 201 in a flat state with the remaining occupying strips 3, thereby ensuring that the cable is stably maintained at the corresponding position in the curved slot section 201, facilitating the subsequent cable to be set and walked, and the cable is closely attached to the framework 1, and the cables can also be closely arranged, so that the overall structure of the wound coil is stable.

[0076] For the installation of the first limiting part on the framework 1, the first limiting part can be installed on the framework 1 by any movable connection installation mode and can cover the curved slot section 201, for example, the first limiting part can be selected from one of the following modes: buckling, clamping, bonding, threaded connection, insertion, hinging, sliding connection, etc.

[0077] As shown in Figures 5-8 , the first limiting part is preferably installed on the framework 1 in a sliding connection mode, specifically: the first limiting part includes a baffle 4, a slot hole is formed in the middle position of the baffle 4, and two groups of first grooves 15 are formed in the side positions of the baffle 4. The baffle 4 is sleeved outside the first screw 5 through the slot hole to realize the sliding assembly of the baffle 4, and the sliding path of the baffle 4 covers the curved slot section 201. Under normal circumstances, the baffle 4 covers the curved slot section 201 to apply a pressing force to the plurality of occupying strips 3, and the framework 1 is provided with a pin 14 for abutting against the first groove 15 to stably maintain the covering state of the baffle 4. This state can be represented by Figure 5 . When it is necessary to remove the covering and pressing of the baffle 4 on the curved slot section 201, the baffle 4 can be slid away from the curved slot section 201 to expose the plurality of occupying strips 3 in the curved slot section 201. For example, as shown in Figure 5 , when it is necessary to remove the covering and pressing of the left baffle 4 on the curved slot section 201, the baffle 4 can be slid rightward along the framework 1.

[0078] Due to the size and layout limitations of the framework 1 and the baffle 4, the sliding track of the baffle 4 may not meet the requirement of exposing the curved slot section 201. Therefore, as shown in Figures 7-8 , one end of the slot hole is designed as a flared end, and the inner diameter of the flared end is greater than the diameter of the first screw 5. When the baffle 4 covers the curved slot section 201, the other end of the slot hole abuts against the first screw 5. Still taking Figure 5As shown in the case, when the baffle 4 is axially slid to the right along the skeleton 1, the flared end of the slot hole can be moved to the outside of the first screw 5, at this time even if the baffle 4 does not open or completely open the curved slot section 201, it can be taken out from the first screw 5 by virtue of the design that the inner diameter of the flared end is larger than the diameter of the first screw 5, that is, the baffle 4 is removed from the cover of the curved slot section 201, and the plurality of occupying bars 3 in the curved slot section 201 are exposed. At the same time, as shown in the figure Figures 7-8 As shown, in the case that the baffle 4 covers and suppresses the curved slot section 201, in order for the staff to observe the state of the cable and the occupying bar 3 in the curved slot section 201, an observation hole part 13 can be provided on the baffle 4.

[0079] As shown Figures 1-6 As shown, further, when the wound cable is multiple turns, for example, eight turns, at this time the slot width of the wire slot 2 on the skeleton 1 also needs to be adaptively set to a size for accommodating the cross-sectional diameter of eight turns of cable, and when the cable is wound in the wire slot 2 in the form of eight turns, based on the fact that the number of turns is large at this time, the cables may be arranged loosely and not closely with each other, at this time in order to meet the winding requirements of different coils or improve the winding effect, the present application improves the design of the wire slot 2. Specifically as follows:

[0080] A convex rib 6 is convexly provided at the middle position of the bottom of the wire slot 2, the convex rib 6 is flush with the slot opening of the wire slot 2, the convex rib 6 can be integrally manufactured with the wire slot 2, or it can be additionally provided on the premise that the wire slot 2 already exists, the setting mode of the convex rib 6 can be various, which will not be described herein. The existence of the convex rib 6 in the wire slot 2 will divide the wire slot 2 into two groups of sub-slots, which are distinguished as outer sub-slot 7 and inner sub-slot 8 according to the different positions on the skeleton 1, the layout of the outer sub-slot 7 and the inner sub-slot 8 can be represented by Figure 5 Therefore, under the design of the outer sub-slot 7 and the inner sub-slot 8, the plurality of occupying bars 3 originally located in the wire slot 2 will be uniformly distributed in the outer sub-slot 7 and the inner sub-slot 8, the existence of the convex rib 6 is equivalent to dividing the single group of wire slot 2 with large slot width into two groups of sub-slots with small slot width, the sub-slots with small slot width can accommodate fewer turns of cable, so that the cables can be arranged closely with each other, and the winding effect is good. At the same time, the convex rib 6 also has the effect of blocking the stress accumulation in the magnet.

[0081] As shown Figure 4 As shown, under the premise of the existence of the convex rib 6, a notch 601 needs to be provided on the convex rib 6, the notch 601 is used for the cable in the outer sub-slot 7 to jump and pass through the inner sub-slot 8, or for the cable in the inner sub-slot 8 to jump and pass through the outer sub-slot 7, in order to complete the cable winding work in the width direction of the wire slot 2.

[0082] In the presence of the convex ridge 6, there will be an outer auxiliary groove 7 and an inner auxiliary groove 8, according to the position of the wire inlet on the framework 1 (or according to the starting position of the cable winding), there can be two winding methods as follows:

[0083] (1) winding the outer auxiliary groove 7 first and then winding the inner auxiliary groove 8;

[0084] (2) winding the inner auxiliary groove 8 first and then winding the outer auxiliary groove 7.

[0085] For example, when the starting position of the wire inlet is in the middle position of the framework 1 during winding, the second winding method can be selected; when the starting position of the wire inlet is at the end of the framework 1 during winding, the first winding method can be selected.

[0086] Since the groove depth of the wire groove 2 is set according to the number of layers of the cable to be wound, as shown in Figure 10 , when the number of layers of the cable to be wound is two, that is, Figure 10 c (lower layer cable) and b (upper layer cable), the groove depth of the wire groove 2 is set to twice the diameter of the cable. Based on this size of groove depth design, the application also includes a pressure belt 9 matched with the auxiliary groove groove shape, which is used to be placed in the auxiliary groove and abut against the top of the plurality of occupying strips 3. The thickness of the pressure belt 9 is equal to the diameter of the cable, so the sum of the thickness of the pressure belt 9 and the occupying strip 3 is equal to the groove depth of the wire groove 2. When the first limiting member covers the curved groove section 201, it will abut against the pressure belt 9 and exert a pressing force on the pressure belt 9 towards the groove bottom of the curved groove section 201.

[0087] At the same time, on the basis of setting the above-mentioned first limiting member for covering and pressing the curved groove section 201, in order to also limit and press the cable in the straight groove section 202, the application also sets a second limiting member, which is movably arranged on the framework 1, and the second limiting member is used to press the cable in the straight groove section 202. When the cable is running through the straight groove section 202 during use, the pressing force of the second limiting member on the straight groove section 202 is released in advance, and after the cable is well arranged in the straight groove section 202, the second limiting member is used to exert a pressing force on the straight groove section 202 to limit and press the cable in the straight groove section 202, further ensuring the tight arrangement of the obtained saddle-shaped coil cable.

[0088] Specifically, the second limiting member includes a blocking strip 10 and a pressing block 11, a slot hole is formed in the middle position of the blocking strip 10, the blocking strip 10 is movably sleeved outside the second screw 12 of the framework 1 through the slot hole, realizing the sliding assembly of the blocking strip 10, and the pressing block 11 is used to be placed in the corresponding straight groove section 202 to press the cable in the straight groove section 202. The sliding path of the blocking strip 10 can cover the straight groove section 202, and when the pressing block 11 is placed in the straight groove section 202, the blocking strip 10 can exert a pressing force on the pressing block 11. This pressing state can be adjusted byFigure 5 As shown in the figure, in order to ensure that this state is stably maintained, the present application is provided with a second groove 16 on the blocking strip 10, and a corresponding columnar nail is arranged on the framework 1, which is used to resist the second groove 16, so that the pressing state of the blocking strip 10 can be stably maintained, and the subsequent cable running action is prevented from causing interference. Figure 9

[0089] Embodiment two:

[0090] A winding method of a winding tool based on a cosθ type coil double-layer cable, the method is described in the presence of the above convex rib 6, the wire slot 2 is divided into two groups of sub-slots, the two groups of sub-slots are divided into outer sub-slots 7 and inner sub-slots 8 according to the different positions on the framework 1, and the corresponding number of layers of cables can be wound according to the slot depth of the wire slot 2, which includes the following steps:

[0091] Step one: according to the position of the wire inlet on the framework 1, one of the two winding methods of "first outer sub-slot 7 and then inner sub-slot 8" and "first inner sub-slot 8 and then outer sub-slot 7" is selected in advance;

[0092] Step two: after selecting the corresponding winding method, according to the nearest principle, one of the curved slot section 201 or the straight slot section 202 close to the wire inlet is selected, if a curved slot section 201 of the sub-slot is closest to the wire inlet, the occupying strip 3 at the corresponding position in the curved slot section 201 is taken out first to expose the storage area for the single cable to run, and the cable is wound on the curved slot section 201 according to the position of the storage area, after the curved slot section 201 is wound, the cable and the remaining occupying strip 3 are laid flat on the bottom of the curved slot section 201;

[0093] Step three: then slide the baffle 4 at the position of the curved slot section 201 to cover the cable and the remaining occupying strip 3 to exert a pressing force towards the bottom of the groove, so that the laying state of the cable and the remaining occupying strip 3 can be maintained;

[0094] Step four: since the cable has been positionally limited by the aforementioned storage area, and the straight slot section 202 is located between the two curved slot sections 201, the subsequent cable running position will be limited, that is, it will naturally run at the corresponding position in the straight slot section 202, after the running is completed, the pressing block 11 at the position of the straight slot section 202 is covered on the cable, and the blocking strip 10 is slid on the pressing block 11, so that the blocking strip 10 and the pressing block 11 exert a pressing force towards the bottom of the groove on the cable;

[0095] ​Step 5: Since the single-turn coil is composed of two groups of curved slot segments 201 and two groups of straight slot segments 202, the above winding process for the curved slot segments 201 and the straight slot segments 202 is repeated to wind the remaining group of curved slot segments 201 and the remaining group of straight slot segments 202, thus completing the winding process of the single-turn cable. After that, the baffles 4, baffles 10, and pressing blocks 11 on the frame 1 are all in a covered and pressed state.

[0096] Step 6: Continue winding the cable. The pressing force on the slot section to be wound must be released first according to the position of the slot section to be wound. After completing the winding at the corresponding position, the pressing force must be applied to the position again. In this way, the multi-turn winding of the cable in the corresponding sub-slot is completed.

[0097] Step 7: After the above-mentioned auxiliary slot is wound, the cable jumper is passed through the notch 601 on the ridge 6 to another auxiliary slot. The winding method of the cable in this auxiliary slot is the same as above. After winding is completed, it can be passed out from the outlet.

[0098] Example 3:

[0099] Furthermore, based on the above method, the present application defines that the depth of the wire trough 2 is set to accommodate the winding of double-layer cables, the incoming and outgoing wires are arranged at the same end of the frame 1, and four sets of placeholders 3 are laid flat in the outer auxiliary groove 7 and the inner auxiliary groove 8, and the positions of the incoming and outgoing wires can be determined by Figure 5 In this case, the method includes the following steps:

[0100] Step 1: Based on the position of the wire inlet on the frame 1, the winding method of first winding the outer auxiliary groove 7 and then the inner auxiliary groove 8 is carried out;

[0101] Step 2: Starting from the curved slot section 201 of the outer auxiliary slot 7 close to the wire inlet, first Figure 5 From a viewing angle, the placeholder strip 3 near the outermost wall of the curved slot section 201 on the left is removed to expose a storage area for a single cable to pass through. The cable is wound on the curved slot section 201 according to the position of the storage area. After the winding of the curved slot section 201 is completed, the cable and the remaining placeholder strips 3 are laid flat on the bottom of the curved slot section 201. It should be noted that when the curved slot section 201 is used as the starting position, since the cable winding method is "gradually reducing the diameter", the slot width of the curved slot section 201 needs to be additionally widened. The optimal widening data is equal to the diameter of the cable to meet the requirement that the cable uses it as the starting position.

[0102] Step 3: Slide the baffle 4 at the position of the curved slot section 201 to cover the cable and the remaining placeholders 3 to apply a pressing force toward the bottom of the slot, so that the cable and the remaining placeholders 3 are kept flat;

[0103] Step 4: Since the cable has been positioned in the aforementioned storage area and the straight slot section 202 is located between the two curved slot sections 201, the subsequent cable will naturally run in the straight slot section 202. After running, the pressure block 11 at the position of the straight slot section 202 is covered on the cable and the stop bar 10 is slid on the pressure block 11, so that the stop bar 10 and the pressure block 11 apply a pressing force to the cable toward the bottom of the slot;

[0104] Step 5: Since the single-turn coil is composed of two groups of curved slot segments 201 and two groups of straight slot segments 202, the above Figure 5 The left curved slot section 201 and the front straight slot section 202 are wound from the perspective, and the above winding work of the curved slot section 201 and the straight slot section 202 is repeated to wind the right curved slot section 201 and the back straight slot section 202, thereby completing the winding work of the first turn of the cable, and then making all the baffles 4 and the baffles 10 on the skeleton 1 in a covered and pressed state. It should be noted that the winding of the right curved slot section 201 in this step is the same as that of the left curved slot section 201. Taking the specific winding of the right curved slot section 201 as an example: first, the right curved slot section 201 (with Figure 14 The placeholder strip 3 near the outermost wall is removed to expose a storage area for a single cable to pass through. Figure 15 d in the figure indicates that the cable is threaded and wound on the curved slot section 201 according to the location of the storage area;

[0105] Step 6: Continue winding the cable. According to the position of the winding slot, you need to release the pressure on it first, and then take it out from the outside to the inside ( Figure 15 The three sets of placeholders 3 (arrows in the lower middle position) are used to complete the winding of the second, third, and fourth turns of the cable in sequence. After completing all the winding work of the outer auxiliary slot 7, the corresponding pressing force needs to be set on the corresponding slot section. In this way, the cable in the outer auxiliary slot 7 is wound in four turns in a reduced diameter form in sequence.

[0106] Step 7: Transfer the cable to the inner auxiliary groove 8 through the notch 601 on the ridge 6. The winding method of the cable in the inner auxiliary groove 8 is the same as that of the outer auxiliary groove 7. The winding order of the four turns of cable can be as follows: Figure 15 The arrow in the upper middle position indicates that after the inner auxiliary groove 8 is wound, only the winding of the single layer cable in the wire groove 2 is completed. Figure 10 From the perspective of the cable, the single-layer cable can be represented by c;

[0107] Step 8: Since the depth of the cable trough 2 is set to accommodate the winding of double-layer cables, the inner auxiliary groove 8 and the outer auxiliary groove 7 are wound first. The subsequent winding is carried out when there is a single-layer cable at the bottom of the cable trough 2. The pressing of the baffle 4 and the pressing belt 9 on the curved slot section 201 and the pressing of the baffle 10 and the pressing block 11 on the straight slot section 202 are released in sequence, and the notches of the curved slot section 201 and the straight slot section 202 are exposed in sequence. Due to the supporting effect of the skeleton 1 itself, the cable is then expanded in the form of expansion (the expansion direction is the same as the expansion direction). Figure 15 (the arrows in the upper middle section point in the opposite direction) four turns of winding are completed in sequence in the inner auxiliary slot 8. For the curved slot section 201, the baffle 4 needs to be used to press after each turn of winding. For the straight slot section 202, the baffle 10 needs to be used to press after each turn of winding.

[0108] Step 9: The cable is transferred through the notch 601 on the ridge 6 and passed into the outer auxiliary groove 7. Due to the support of the ridge 6 itself, the cable is then expanded in diameter (the expansion direction is the same as the Figure 15 (The arrows in the lower middle section point in the opposite direction) Four turns of winding are completed in sequence in the outer auxiliary slot 7. For the curved slot section 201, the baffle 4 needs to be used to press after each turn of winding. For the straight slot section 202, the baffle 10 needs to be used to press after each turn of winding.

[0109] Step 10: After completing four turns of the cable in the outer auxiliary slot 7, the cable is passed through the outlet to complete the winding work.

[0110] After the coil is wound, the subsequent coil production steps such as coil pre-tightening and bundling, heat treatment, and epoxy impregnation can be carried out.

[0111] It should be noted that the first screw 5, the second screw 12, the pin 14, the column nail, the baffle 4 and the baffle 10 in this application are all set to be detachable. After completing the corresponding winding work, the above-mentioned components can be removed so that the obtained saddle-type coil is composed of only the skeleton 1 and the saddle-type cable. The saddle-type cable is attached to the skeleton 1. Subsequently, the skeleton 1 can be installed in the corresponding position for use without the need to remove the saddle-type cable for use.

[0112] The number of cable layers that the winding tool of the present application is designed to wind can be any number and can be set according to actual needs. The winding method will be adaptively matched according to the number of layers wound.

[0113] Example 4:

[0114] like Figures 10-13 As shown, the difference between this embodiment and the third embodiment is that a side groove 17 is provided near the end of the frame 1, and one end of the side groove 17 is connected to the line entry position, and the other end of the side groove 17 is connected to the outer auxiliary groove 7, so that Figure 5From the perspective of the shown view, the cable is pre-entered from the entry position to the straight slot section 202 via the side slot 17, that is, the straight slot section 202 at this time serves as the starting winding position.

[0115] Therefore, based on the design of the side slot 17, the winding mode of the present embodiment is different from that of the third embodiment, and the starting winding position is as follows: the cable is first threaded into the side slot 17 from the entry position until it enters the straight slot section 202, and at this time, the starting winding position of the cable is the straight slot section 202, and the subsequent winding work is the same as described above.

[0116] In the present embodiment, the starting winding position of the cable entered from the entry position is changed by the design of the side slot 17. Compared with the third embodiment, the present embodiment only changes the starting winding position of the cable from the curved slot section 201 to the straight slot section 202. The two different starting winding positions can be selected according to the actual situation, and the present application is not limited thereto.

[0117] The above describes one embodiment of the present application in detail, but the content described is only a preferred embodiment of the present application and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made according to the scope of the present application should still belong to the scope of the present application.

Claims

1. A winding tool based on a cosθ-type coil double-layer cable, characterized in that: include: Skeleton (1); A wire trough (2) is provided on the frame (1) and is composed of two curved trough sections (201) and a straight trough section (202) located between the two curved trough sections (201); A plurality of placeholder strips (3) adapted to the arc shape of the curved slot section (201) and used to flatly fill the bottom of the curved slot section (201), so that when any placeholder strip (3) is removed, the bottom of the slot can be exposed to form a storage area for accommodating cables; The first limiting member can cover the curved groove section (201) and is used to apply a pressing force to the placeholder strip (3) toward the bottom of the curved groove section (201).

2. A winding tool based on a cosθ-type coil double-layer cable according to claim 1, characterized in that: The first limiting member is movably connected to the frame (1).

3. A winding tool based on a cosθ-type coil double-layer cable according to claim 2, characterized in that: The first limiting member includes a baffle (4) having a slotted hole formed thereon, the slotted hole being sleeved on the outside of the first screw (5) on the frame (1) to achieve sliding assembly of the baffle (4), one end of the slotted hole being flared to form a flared end, and the inner diameter of the flared end being larger than the diameter of the first screw (5), so that when the flared end is slidably sleeved on the outside of the first screw (5), the baffle (4) can be removed from the first screw (5).

4. A winding tool based on a cosθ-type coil double-layer cable according to any one of claims 1 to 3, characterized in that: A ridge (6) flush with the groove opening of the wire trough (2) is provided at the middle position of the bottom of the wire trough (2) to separate the wire trough (2) into two groups of sub-troughs. The two groups of sub-troughs are divided into an outer sub-trough (7) and an inner sub-trough (8) according to their different positions on the frame (1). A plurality of placeholder strips (3) are evenly distributed at the bottom of the two sub-troughs. A notch (601) is provided on the ridge (6) to allow the cables on one of the sub-troughs to transition to the other sub-trough.

5. The winding tool based on the cosθ type coil double-layer cable according to claim 3, characterized in that: The winding tool also includes a pressing belt (9) arranged in the auxiliary groove and abutting against the top of the placeholder strip (3), wherein the sum of the thickness of the pressing belt (9) and the placeholder strip (3) is equal to the groove depth of the auxiliary groove; and the baffle (4) is used to apply a pressing force to the pressing belt (9) toward the groove bottom of the curved groove section (201).

6. A winding tool based on a cosθ-type coil double-layer cable according to claim 4, characterized in that: The winding tool further comprises a second limiting member which can cover the straight slot section (202) and is used to apply a pressing force towards the slot bottom to the cable in the straight slot section (202).

7. A winding tool based on a cosθ-type coil double-layer cable according to claim 6, characterized in that: The second limiting member includes a stopper (10) with a slotted hole formed thereon and a pressure block (11), the pressure block (11) being arranged in the straight slot section (202) and being used to abut against the top of the cable, the slotted hole being sleeved on the outside of the second screw (12) on the frame (1) to achieve sliding assembly of the stopper (10), the stopper (10) being able to slide onto the straight slot section (202) to apply a pressing force on the pressure block (11) toward the bottom of the straight slot section (202).

8. The winding tool based on the cosθ type coil double-layer cable according to claim 3, characterized in that: An observation hole (13) is provided on the baffle (4), and a pin (14) for stopping the position of the baffle (4) is provided on the frame (1).

9. A winding method using a winding tool based on a cosθ-type coil double-layer cable according to any one of claims 1 to 8, characterized in that: In the presence of the ridges (6), the wire trough (2) is divided into two groups of auxiliary troughs. The two groups of auxiliary troughs are divided into outer auxiliary troughs (7) and inner auxiliary troughs (8) according to their positions on the frame (1). A corresponding number of layers of cables can be wound according to the depth of the wire trough (2). The method comprises the following steps: Step 1: According to the position of the wire inlet on the frame (1), one of the two winding methods is selected in advance: first the outer auxiliary groove (7) and then the inner auxiliary groove (8) or first the inner auxiliary groove (8) and then the outer auxiliary groove (7); Step 2: The winding starts from one of the curved slot section (201) and the straight slot section (202), and a curved slot section (201) of the auxiliary slot is selected as the starting point. It is necessary to first remove the placeholder strip (3) at the corresponding position in the curved slot section (201) to expose the storage area for a single cable to pass through. The cable is wound on the curved slot section (201) according to the position of the storage area. After the winding of the curved slot section (201) is completed, the cable and the remaining placeholder strips (3) are laid flat on the bottom of the curved slot section (201); Step 3: Then slide the baffle (4) at the position of the curved groove section (201) so that it covers the cable and the remaining placeholders (3) to apply a pressing force toward the bottom of the groove, so that the cable and the remaining placeholders (3) are kept flat; Step 4: Since the cable has been restricted in position by the aforementioned storage area, and the straight slot section (202) is located between the two curved slot sections (201), the subsequent cable will naturally run in the straight slot section (202). After the running is completed, the pressure block (11) at the position of the straight slot section (202) is covered on the cable and the stop bar (10) is slid on the pressure block (11), so that the stop bar (10) and the pressure block (11) apply a pressing force toward the bottom of the slot to the cable; Step 5: Since the single-turn coil is composed of two groups of curved slot segments (201) and two groups of straight slot segments (202), the above-mentioned winding work of the curved slot segments (201) and the straight slot segments (202) is repeated, and the remaining group of curved slot segments (201) and the group of straight slot segments (202) can be wound, that is, the winding work of the first turn of the cable is completed. At this time, the baffles (4), baffles (10) and pressing blocks (11) on the skeleton (1) are all in a covered and pressed state; Step 6: When continuing to wind the cable, the pressing force on the slot section to be wound must be released first according to the position of the slot section to be wound. After completing the winding of the corresponding position, the pressing force must be applied to the position again. In this way, the multi-turn winding of the cable in the corresponding sub-slot is completed; Step 7: The cable is transferred to another auxiliary groove through the notch (601) on the ridge (6). The winding method of the cable in the auxiliary groove is the same as above. After the winding is completed, the cable can be passed through the outlet.

10. A winding method based on a winding tool for a cosθ-type coil double-layer cable according to claim 9, characterized in that: When the depth of the defined wire trough (2) is set to accommodate winding double-layer cables, the incoming wires and the outgoing wires are both arranged at the same end of the frame (1), and four sets of placeholder strips (3) are laid flat in the outer auxiliary trough (7) and the inner auxiliary trough (8), the method comprises the following steps: Step 1: Based on the position of the wire inlet on the frame (1), the outer auxiliary groove (7) is wound first and then the inner auxiliary groove (8); Step 2: Starting from the curved groove section (201) of the outer auxiliary groove (7) near the wire entry port, the placeholder strip (3) near the outermost wall of the curved groove section (201) is first removed to expose a storage area for a single cable to pass through. The cable is wound on the curved groove section (201) according to the position of the storage area. After the curved groove section (201) is wound, the cable and the remaining placeholder strips (3) are laid flat on the bottom of the curved groove section (201); Step 3: Then slide the baffle (4) at the position of the curved groove section (201) so that it covers the cable and the remaining placeholders (3) to apply a pressing force toward the bottom of the groove, so that the cable and the remaining placeholders (3) are kept flat; Step 4: Since the cable has been restricted in position by the aforementioned storage area, and the straight slot section (202) is located between the two curved slot sections (201), the subsequent cable will naturally run in the straight slot section (202). After the running is completed, the pressure block (11) at the position of the straight slot section (202) is covered on the cable and the stop bar (10) is slid on the pressure block (11), so that the stop bar (10) and the pressure block (11) apply a pressing force toward the bottom of the slot to the cable; Step 5: Since the single-turn coil is composed of two groups of curved slot segments (201) and two groups of straight slot segments (202), the above-mentioned winding work of the curved slot segments (201) and the straight slot segments (202) is repeated, and the remaining group of curved slot segments (201) and the group of straight slot segments (202) can be wound, that is, the winding work of the first turn of the cable is completed. At this time, the baffles (4), baffles (10) and pressing blocks (11) on the skeleton (1) are all in a covered and pressed state; Step 6: Continue winding the cable. First, release the pressing force on the slot section to be wound according to the position of the slot section to be wound. Then, take out the three sets of placeholders (3) from the outside to the inside and complete the winding of the second turn of cable, the third turn of cable and the fourth turn of cable in sequence. After completing all the winding work of the outer auxiliary slot (7), the corresponding pressing force needs to be set on the corresponding slot section. In this way, the cable in the outer auxiliary slot (7) is wound in four turns in a reduced diameter form in sequence. Step 7: The cable is transferred through the notch (601) on the ridge (6) and passed through the inner auxiliary groove (8). The winding method of the cable in the inner auxiliary groove (8) is the same as that of the outer auxiliary groove (7); After the winding of the inner auxiliary slot (8) is completed, only the winding of the single-layer cable in the cable slot (2) is completed; Step eight: Since the depth of the cable trough (2) is set to accommodate the winding of double-layer cables, the winding method of first the inner auxiliary trough (8) and then the outer auxiliary trough (7) is carried out. The subsequent winding is carried out when a single-layer cable already exists at the bottom of the cable trough (2). The pressing of the baffle (4) and the pressing belt (9) on the curved trough section (201) and the pressing of the baffle (10) and the pressing block (11) on the straight trough section (202) are released in sequence, so that the notches of the curved trough section (201) and the straight trough section (202) can be exposed in sequence. Due to the supporting effect of the skeleton (1) itself, the cable is then wound four turns in the inner auxiliary trough (8) in an expanded diameter form. For the curved trough section (201), the baffle (4) needs to be used to press after each turn of winding. For the straight trough section (202), the baffle (10) needs to be used to press after each turn of winding. Step nine: The cable is transferred through the notch (601) on the ridge (6) and passed into the outer auxiliary groove (7). Due to the supporting effect of the ridge (6), the cable is then wound four turns in the outer auxiliary groove (7) in an expanded diameter form. For the curved groove section (201), each turn needs to be pressed by the baffle (4). For the straight groove section (202), each turn needs to be pressed by the baffle (10). Step 10: After the cable is wound around the outer auxiliary groove (7), the cable is passed through the outlet to complete the winding work.

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