A wire winding device for solenoid valve production and its working method

Abstract

The present invention discloses a wire winding device for solenoid valve production and its working method. The wire winding device includes a feeding mechanism, a wire winding machine, a solenoid valve skeleton installation mechanism, and a blanking mechanism; the wire winding machine is provided with a wire winding main shaft, the solenoid valve skeleton installation mechanism includes a moving seat and a three-axis moving component, and a placement groove for the solenoid valve skeleton is fixed on the moving seat; the placement groove is provided with a feeding opening and a docking opening, and the two sides of the docking opening are connected to the front end limit block through springs; the front end limit block adopts a wedge-shaped guiding surface and spring linkage design. When the main shaft advances, the wedge-shaped surface converts the axial thrust into a lateral component force, driving the limit block to move outward to eliminate mechanical interference; when the solenoid valve skeleton is placed, the spring resets to make the limit block retract inward, precisely restricting the horizontal position of the solenoid valve skeleton and avoiding skew or collision caused by traditional rigid limiting. The top limit block forms an elastic interference fit with the front end annular block of the solenoid valve skeleton through an interference fit structure, avoiding the defect of no constraint at the top and reducing the vertical offset.

Description

Technical Field

[0001] The present invention relates to the technical field of solenoid valve production and processing equipment, and particularly relates to a wire winding device for solenoid valve production and its working method. Background Art

[0002] As the core actuator in industrial automation control, the winding precision of the solenoid valve coil directly determines the response speed, sealing performance, and service life of the valve body. Existing wire winding devices have significant technical defects in the positioning of the solenoid valve skeleton, mainly reflected in two core problems: insufficient front-end limit functionality and lack of top-end limit structure, which restrict the mass production efficiency and yield rate of high-precision solenoid valves.

[0003] Traditional fixtures usually use fixed limit blocks to restrict the horizontal direction of the solenoid valve skeleton. However, to avoid mechanical interference between the wire winding spindle and the fixture, a large clearance space needs to be reserved for the limit blocks. This design allows the solenoid valve skeleton to be accurately positioned only when the dimensions are exactly matched, and it has extremely poor adaptability to minor dimensional deviations. During the placement or transportation of the solenoid valve skeleton, it is prone to skew or collision, which will affect the winding precision at best and cause deformation of the solenoid valve skeleton or damage to the spindle at worst.

[0004] Since the manipulator needs to vertically place the solenoid valve skeleton from above, the existing fixture cannot be equipped with a rigid limit structure at the top, and only relies on the self-weight of the solenoid valve skeleton and the bottom support to achieve vertical positioning. Under the action of high-speed movement or winding tension, the solenoid valve skeleton is prone to shaking. Some solutions attempt to assist fixation through vacuum adsorption or side grippers, but vacuum adsorption has strict requirements for the surface flatness of the solenoid valve skeleton, while side grippers are likely to interfere with the manipulator path and have insufficient adaptability to micro or special-shaped solenoid valve skeletons. Summary of the Invention

[0005] Object of the Invention: The object of the present invention is to provide a wire winding device for solenoid valve production and its working method, which solves the problems of insufficient front-end limit functionality and lack of top-end limit structure in the prior art.

[0006] Technical Solution:

[0007] A wire winding device for solenoid valve production includes a feeding mechanism, a wire winding machine, a solenoid valve skeleton installation mechanism, and a discharging mechanism;

[0008] The wire winding machine is provided with a wire winding spindle,

[0009] The solenoid valve skeleton installation mechanism includes a moving seat and a three-axis moving component for controlling its movement, and a placement groove for the solenoid valve skeleton is fixedly installed on the moving seat;

[0010] The upper end of the placement groove is provided with a loading opening, and the front end is provided with a docking opening for inserting the spindle. The two sides of the docking opening are connected with front end limit blocks through springs, and the end of the front end limit block close to the spindle is a wedge-shaped guide surface that is laterally separated after being pushed by the end face of the spindle, thereby driving the front end limit block to move outward;

[0011] The solenoid valve skeleton of the solenoid valve includes a front end annular block, a rear end annular block and a middle annular winding column. The solenoid valve skeleton is a hollow structure in the middle of its axial direction to form a locking structure that cooperates with the main shaft. The outer diameter of the middle annular winding column is smaller than the front end annular block and the rear end annular block.

[0012] Furthermore, the placement groove is provided with a slide groove at the lower end of the docking opening, and the bottom of the front end limit block is slidably connected in the slide groove.

[0013] Furthermore, a top limit block is provided at the top of the front end limit block extending toward the rear end, the upper end of the top limit block is a wedge-shaped guide structure generated by the lateral force generated as the solenoid valve frame moves downward, thereby driving the front end limit block to slide outward along the slide groove, and the lower end is a wedge-shaped or arc structure generated by the lateral force generated as the solenoid valve frame moves upward, thereby driving the front end limit block to slide outward along the slide groove, and when the front end limit block is in the maximum limit state, the top limit block has an interference fit with the solenoid valve frame.

[0014] Furthermore, the space formed between the two front end limit blocks is a rectangle with a horizontally varying width, and the maximum width is greater than the outer diameter of the main shaft.

[0015] Furthermore, the inner shape of the top limit block is an arc structure that matches the outer contour of the front end annular block of the electromagnetic valve framework.

[0016] Furthermore, the three-axis moving assembly includes a transverse conveyor belt, a traveling cylinder connected to the transverse conveyor belt gear, a traveling seat fixedly connected to the traveling cylinder, a lifting cylinder arranged on the traveling seat, a lifting seat transmission-connected to the lifting cylinder, a pushing cylinder arranged on the lifting seat, and a moving seat arranged at the output end of the pushing cylinder.

[0017] Furthermore, the loading mechanism and the unloading mechanism are both multi-degree-of-freedom manipulators.

[0018] Furthermore, the electromagnetic valve skeleton also includes a bent terminal arranged on the rear end annular block, and the placement groove is correspondingly provided with a terminal clamping groove.

[0019] The present invention also discloses a working method of a winding device for producing a solenoid valve, comprising the following steps:

[0020] S1. Loading: The loading mechanism places the solenoid valve skeleton vertically downward into the placement groove. The bottom surface of the placement groove supports the solenoid valve skeleton, and the rear side, both side surfaces, and the two front end limit blocks limit the solenoid valve skeleton in the horizontal direction to prevent displacement.

[0021] S2. Moving and aligning: The three-axis moving assembly drives the moving seat to move, aligning the docking opening of the placement groove with the winding main shaft.

[0022] S3. Installing the solenoid valve skeleton: The three-axis moving assembly drives the moving seat to move forward continuously. The end face of the main shaft contacts the wedge-shaped guiding surface of the front end limit block, pushing the front end limit block to slide outward along the sliding groove to make way. Then, the three-axis moving assembly continues to drive the moving seat to move forward, connecting the solenoid valve skeleton with the main shaft.

[0023] S4. The winding machine drives the main shaft to rotate, cooperating with the winding mechanism to complete the winding operation of the intermediate annular winding column.

[0024] S5. Unloading: The three-axis moving assembly drives the moving seat to move, moving the placement groove to the lower end of the solenoid valve skeleton. Then, the three-axis moving assembly continues to drive the moving seat to move upward, causing the solenoid valve skeleton to fall into the placement groove. Then, the three-axis moving assembly drives the moving seat to move backward, and the front end limit block drives the solenoid valve skeleton to disengage from the main shaft. Finally, the three-axis moving assembly drives the moving seat to move to the unloading mechanism, and the unloading mechanism removes the wound solenoid valve skeleton.

[0025] Further, in step S1, when the solenoid valve skeleton moves downward, it contacts the upper side of the top limit block to generate a lateral component force, driving the top limit block to slide outward along the sliding groove. After the solenoid valve skeleton completely falls into the placement groove, the front end limit block resets under the action of the spring, and the top limit block forms an interference fit with the front annular block of the solenoid valve skeleton. In step S5, when the moving seat moves upward, the solenoid valve skeleton contacts the upper side of the top limit block to generate a lateral component force, driving the top limit block to slide outward along the sliding groove, and the solenoid valve skeleton falls into the placement groove. When the unloading mechanism removes the wound solenoid valve skeleton, the solenoid valve skeleton contacts the lower side of the top limit block to generate a lateral component force, driving the top limit block to slide outward along the sliding groove, thereby removing the solenoid valve skeleton.

[0026] Beneficial effects:

[0027] 1. The front end limit block adopts a linkage design of a wedge-shaped guiding surface and a spring, achieving the dual functions of "avoiding when contacting and locking when resetting". When the main shaft advances, the wedge-shaped surface converts the axial thrust into a lateral component force, driving the limit block to smoothly move outward along the sliding groove, completely eliminating mechanical interference. When the solenoid valve skeleton is placed, the spring resets to make the limit block retract, and the horizontal position of the solenoid valve skeleton is adaptively constrained through a large contact surface. Even if there are dimensional deviations, it can still be accurately limited, avoiding skewing or collision caused by traditional rigid limiting.

[0028] 2. The interference fit structure of the top limit block breaks through the defect of the traditional top without constraint. When the solenoid valve skeleton is placed downwards, the top limit block forms an elastic interference fit with the front-end annular block of the solenoid valve skeleton, making the offset in the vertical direction approach zero. Since the front-end annular block of the solenoid valve skeleton is generally a circular ring structure, while limiting the top, the annular block can also clamp the solenoid valve skeleton in the center of the placement groove from the side end. This non-rigid contact design effectively avoids hard extrusion, not only ensuring the positioning accuracy but also reducing potential damage to the solenoid valve skeleton. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the three-dimensional view of the present invention Figure 1 ;

[0030] Figure 2 is the three-dimensional view of the present invention Figure 2 ;

[0031] Figure 3 is the enlarged view of the position of the feeding mechanism of the present invention;

[0032] Figure 4 is the enlarged view of the solenoid valve skeleton installation mechanism of the present invention;

[0033] Figure 5 is the schematic diagram of the placement groove of the present invention;

[0034] Reference numerals: 1. Feeding mechanism; 2. Winding machine; 21. Main shaft; 3. Solenoid valve skeleton installation mechanism; 31. Moving seat; 32. Three-axis moving assembly; 321. Horizontal conveyor belt; 322. Walking cylinder; 323. Walking seat; 324. Lifting cylinder; 325. Lifting seat; 326. Pushing cylinder; 33. Placement groove; 331. Feeding opening; 332. Docking opening; 333. Front-end limit block; 334. Wedge-shaped guiding surface; 335. Chute; 336. Top limit block; 337. Terminal card slot; 4. Discharging mechanism; 5. Solenoid valve skeleton; 51. Front-end annular block; 52. Rear-end annular block; 53. Annular winding column; 54. Bent terminal. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] To make the technical solutions of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.

[0036] Embodiment 1

[0037] As shown in the figure, a winding device for solenoid valve production includes a feeding mechanism 1, a winding machine 2, a solenoid valve skeleton installation mechanism 3, and a discharging mechanism 4;

[0038] The winding machine 2 is provided with a winding main shaft 21,

[0039] The solenoid valve skeleton mounting mechanism 3 includes a moving seat 31 and a three-axis moving component 32 for controlling its movement. The moving seat 31 is fixedly installed with a placement groove 33 for the solenoid valve skeleton 5. The loading opening 331 of the placement groove 33: receives the solenoid valve skeleton vertically placed by the manipulator, and the bottom support surface ensures the vertical reference of the solenoid valve skeleton.

[0040] The upper end of the placement groove 33 is provided with a loading opening 331, and the front end is provided with a docking opening 332 for the main shaft 21 to insert. Both sides of the docking opening 332 are connected with front end limit blocks 333 through springs. One end of the front end limit block 333 close to the main shaft 21 is a wedge-shaped guiding surface 334 that generates lateral separation after being pushed by the end face of the main shaft 21, thereby driving the front end limit block 333 to move outward. The limit blocks connected by springs form a horizontal constraint, and the wedge-shaped guiding surface 334 converts the thrust of the main shaft into a lateral sliding driving force to achieve dynamic avoidance.

[0041] The solenoid valve skeleton 5 of the solenoid valve includes a front end annular block 51, a rear end annular block 52, and an intermediate annular winding column 53. The middle of the solenoid valve skeleton 5 in its axial direction is a hollow structure, forming a locking structure that cooperates with the main shaft 21. The outer diameter of the intermediate annular winding column 53 is smaller than that of the front end annular block 51 and the rear end annular block 52. The middle hollow structure cooperates with the main shaft 21 to ensure that there is no relative rotation of the solenoid valve skeleton during winding. The connection structure between the solenoid valve skeleton 5 and the main shaft 21 can adopt the commonly used technical structures in the existing technology.

[0042] Furthermore, a sliding groove 335 is opened at the lower end of the placement groove 33 at the docking opening 332, and the bottom of the front end limit block 333 is slidably connected in the sliding groove 335. When the main shaft 21 is pushed forward, the front end limit block 333 slides outward along the sliding groove, and the avoidance distance is dynamically adapted to the diameter of the main shaft to avoid rigid collision. After the main shaft 21 withdraws, the spring tension causes the limit block to reset and re-form a horizontal constraint.

[0043] Furthermore, a top limit block 336 is provided at the top end of the front end limit block 333 extending toward the rear end, the upper end of the top limit block 336 is a wedge-shaped guide structure generated by a lateral force generated as the solenoid valve skeleton 5 moves downward, thereby driving the front end limit block 333 to slide outward along the slide groove 335, and the lower end is a wedge-shaped or arc-shaped structure generated by a lateral force generated as the solenoid valve skeleton 5 moves upward, thereby driving the front end limit block 333 to slide outward along the slide groove 335. When the front end limit block 333 is in the maximum limit state, the top limit block is interference fit with the solenoid valve skeleton. The solenoid valve skeleton 5 contacts the wedge-shaped surface at the upper end of the top limit block 336, and the vertical force is converted into a horizontal component force, driving the front end limit block 333 to slide outward. After the solenoid valve skeleton 5 falls completely in, the spring resets, and the bottom surface and the solenoid valve skeleton form an interference fit, with zero offset in the vertical direction; the maximum limit state refers to the distance that the two front end limit blocks 333 move to the opposite side reaching the maximum value, that is, the maximum limit state, at this time, the width between the two front end limit blocks 333 is the smallest or even zero.

[0044] Furthermore, the space formed between the two front-end limit blocks 333 is a rectangle with a horizontally varying width, and the maximum width is greater than the outer diameter of the main shaft.

[0045] Furthermore, the inner shape of the top limit block 336 is an arc-shaped structure that matches the outer contour of the front end annular block 51 of the solenoid valve frame 5; the arc-shaped concave surface increases the contact area, disperses the interference pressure, and avoids local stress concentration that causes damage to the solenoid valve frame.

[0046] Furthermore, the three-axis moving assembly 32 includes a transverse conveyor belt 321, a travel cylinder 322 connected to the transverse conveyor belt 321 by gears, a travel seat 323 fixedly connected to the travel cylinder 322, a lifting cylinder 324 disposed on the travel seat, a lifting seat 325 transmission-connected to the lifting cylinder 324, a pushing cylinder 326 disposed on the lifting seat 325, and a moving seat 31 disposed at the output end of the pushing cylinder 326. Through the closed-loop control of the three-axis moving assembly 32, the millimeter-level positioning of the placement slot 33 on the XYZ three axes is achieved, ensuring the rapid and accurate docking of the solenoid valve frame with the main shaft.

[0047] Furthermore, the loading mechanism 1 and the unloading mechanism 4 are both multi-degree-of-freedom manipulators.

[0048] Furthermore, the solenoid valve skeleton 5 also includes a bent terminal 54 arranged on the rear end annular block 52, and the placement groove 33 is correspondingly provided with a terminal clamping groove 337; during transportation, the bent terminal 54 is embedded in the terminal clamping groove 337 to prevent the terminal from swinging.

[0049] Example 2

[0050] The present invention also discloses a working method of a winding device for producing a solenoid valve, comprising the following steps:

[0051] S1. Loading: The loading mechanism 1 places the solenoid valve skeleton 5 vertically downward into the placement groove 33. The bottom surface of the placement groove 33 supports the solenoid valve skeleton 5, and the rear side, both side surfaces, and the two front end limit blocks 333 limit the solenoid valve skeleton 5 in the horizontal direction to prevent displacement.

[0052] S2. Moving and aligning: The three-axis moving assembly 32 drives the moving seat 31 to move, so that the docking opening 332 of the placement groove 33 is aligned with the winding main shaft 21.

[0053] S3. Installing the solenoid valve skeleton: The three-axis moving assembly 32 drives the moving seat 31 to move forward continuously. The end face of the main shaft 21 contacts the wedge-shaped guiding surface 334 of the front end limit block 333, pushing the front end limit block 333 to slide outward along the sliding groove 335 to make way. Then the three-axis moving assembly 32 continues to drive the moving seat 31 to move forward, so that the solenoid valve skeleton 5 is connected to the main shaft 21.

[0054] S4. The winding machine 2 drives the main shaft 21 to rotate, and cooperates with the winding mechanism to complete the winding operation of the middle annular winding column 53.

[0055] S5. Unloading: The three-axis moving assembly 32 drives the moving seat 31 to move, so that the placement groove 33 moves to the lower end of the solenoid valve skeleton 5. Then the three-axis moving assembly 32 continues to drive the moving seat 31 to move upward, so that the solenoid valve skeleton 5 falls into the placement groove 33. Then the three-axis moving assembly 32 drives the moving seat 31 to move backward, and the front end limit block 333 drives the solenoid valve skeleton 5 to disengage from the main shaft 21. Finally, the three-axis moving assembly 32 drives the moving seat 31 to move to the unloading mechanism, and the unloading mechanism 4 takes out the wound solenoid valve skeleton 5.

[0056] Further, in step S1, when the solenoid valve skeleton 5 moves downward, it contacts the upper side of the top limit block 336 to generate a lateral component force, driving the top limit block 336 to slide outward along the sliding groove 335. After the solenoid valve skeleton completely falls into the placement groove 33, the front end limit block 333 resets under the action of the spring, and the top limit block 336 forms an interference fit with the front annular block 51 of the solenoid valve skeleton. In step S5, when the moving seat 31 moves upward, the solenoid valve skeleton 5 contacts the upper side of the top limit block 336 to generate a lateral component force, driving the top limit block 336 to slide outward along the sliding groove 335, and the solenoid valve skeleton 5 falls into the placement groove 33. When the unloading mechanism 4 takes out the wound solenoid valve skeleton 5, the solenoid valve skeleton 5 contacts the lower side of the top limit block 336 to generate a lateral component force, driving the top limit block 336 to slide outward along the sliding groove 335, so as to take out the solenoid valve skeleton 5.

[0057] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A winding device for solenoid valve production, characterized in that: It comprises a feeding mechanism (1), a winding machine (2), a frame installation mechanism (3) and a feeding mechanism (4); The winding machine (2) is provided with a winding spindle (21). The skeleton installation mechanism (3) comprises a movable seat (31) and a three-axis movable assembly (32) for controlling the movement of the movable seat (31), wherein a placement groove (33) of the electromagnetic valve skeleton (5) is fixedly installed on the movable seat (31); The upper end of the placement groove (33) is provided with a loading opening (331), and the front end is provided with a docking opening (332) for inserting the main shaft (21), and the two sides of the docking opening (332) are connected to front end limit blocks (333) via springs, and the end of the front end limit block (333) close to the main shaft (21) is a wedge-shaped guide surface (334) that is pushed by the end face of the main shaft (21) to generate lateral separation, thereby driving the front end limit block (333) to move outward; The solenoid valve skeleton (5) comprises a front annular block (51), a rear annular block (52) and a middle annular winding column (53); the skeleton (5) is a hollow structure in the middle of its axial direction to form a locking structure that cooperates with the main shaft (21); the outer diameter of the middle annular winding column (53) is smaller than that of the front annular block (51) and the rear annular block (52); The placement groove (33) is provided with a slide groove (335) at the lower end of the docking opening (332), and the bottom of the front end limit block (333) is slidably connected in the slide groove (335); A top limit block (336) is provided at the top of the front limit block (333) extending toward the rear end. The top end of the top limit block (336) is a wedge-shaped guide structure generated by a lateral force generated when the frame (5) moves downward, thereby driving the front limit block (333) to slide outward along the slide groove (335). The bottom end is a wedge-shaped or arc-shaped structure generated by a lateral force generated when the frame (5) moves upward, thereby driving the front limit block (333) to slide outward along the slide groove (335). When the front limit block (333) is in a maximum limit state, the top limit block and the frame are in interference fit.

2. A solenoid valve production winding device according to claim 1, characterized in that: The space formed between the two front end limit blocks (333) is a rectangle with a horizontally varying width, and the maximum width is greater than the outer diameter of the main shaft.

3. A solenoid valve production winding device according to claim 1, characterized in that: The inner shape of the top limit block (336) is an arc-shaped structure that matches the outer contour of the front end annular block (51) of the skeleton (5).

4. A winding device for producing a solenoid valve according to claim 1, characterized in that: The three-axis moving assembly (32) comprises a transverse conveyor belt (321), a travel cylinder (322) connected to the transverse conveyor belt (321) by gears, a travel seat (323) fixedly connected to the travel cylinder (322), a lifting cylinder (324) disposed on the travel seat, a lifting seat (325) drivingly connected to the lifting cylinder (324), a pushing cylinder (326) disposed on the lifting seat (325), and a moving seat (31) disposed at the output end of the pushing cylinder (326).

5. A wire winding device for producing a solenoid valve according to claim 1, characterized in that: The loading mechanism (1) and the unloading mechanism (4) are both multi-degree-of-freedom manipulators.

6. A wire winding device for producing a solenoid valve according to claim 1, characterized in that: The solenoid valve skeleton (5) further comprises a bent terminal (54) arranged on the rear end annular block (52), and the placement groove (33) is correspondingly provided with a terminal clamping groove (337).

7. A method for operating a winding device for producing a solenoid valve according to claim 1, characterized in that: The following steps are involved: S1. Loading: The loading mechanism (1) places the electromagnetic valve frame (5) from top to bottom in the placement groove (33), the bottom surface of the placement groove (33) supports the frame (5), and the rear side surface, two side surfaces and two front end limit blocks (333) limit the frame (5) in the horizontal direction to prevent displacement; S2, movement and alignment: the three-axis movement assembly (32) drives the movement seat (31) to move so that the docking opening (332) of the placement groove (33) is aligned with the winding main shaft (21); S3, installing the skeleton: the three-axis moving assembly (32) drives the moving seat (31) to continue to move forward, the end face of the main shaft (21) contacts the wedge-shaped guide surface (334) of the front end limit block (333), pushing the front end limit block (333) to slide outward along the slide groove (335) to avoid, and then the three-axis moving assembly (32) continues to drive the moving seat (31) to move forward, so that the skeleton (5) is connected to the main shaft (21); S4, the winding machine (2) drives the main shaft (21) to rotate, and cooperates with the winding mechanism to complete the winding operation of the middle annular winding column (53); S5, unloading: the three-axis moving assembly (32) drives the moving seat (31) to move, so that the placement groove (33) moves to the lower end of the frame (5), and then the three-axis moving assembly (32) continues to drive the moving seat (31) to move upward, so that the frame (5) falls into the placement groove (33), and then the three-axis moving assembly (32) drives the moving seat (31) to move backward, and the front end limit block (333) drives the frame (5) to be separated from the main shaft (21), and finally the three-axis moving assembly (32) drives the moving seat (31) to move to the unloading mechanism, and the unloading mechanism (4) takes out the frame (5) after winding.

8. The working method of the winding device for producing a solenoid valve according to claim 7, characterized in that: The invention comprises a top stop block (336) as claimed in claim 5. In step S1, when the frame (5) moves downward, it contacts the upper side of the top stop block (336) to generate a lateral component force, driving the top stop block (336) to slide outward along the slide groove (335). After the frame completely falls into the placement groove (33), the front stop block (333) is reset under the action of the spring, and the top stop block (336) forms an interference fit with the front ring block (51) of the frame. In step S5, the movable seat ( When the skeleton (5) moves upward, the skeleton (31) contacts the upper side of the top limit block (336) to generate a lateral force component, driving the top limit block (336) to slide outward along the slide groove (335), and the skeleton (5) falls into the placement groove (33); when the unloading mechanism (4) takes out the skeleton (5) that has been wound, the skeleton (5) contacts the lower side of the top limit block (336) to generate a lateral force component, driving the top limit block (336) to slide outward along the slide groove (335), thereby taking out the skeleton (5).

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