Winding device for electromagnetic valve production and working method thereof

Abstract

The invention discloses a winding device for electromagnetic valve production and a working method of the winding device. The winding device comprises a feeding mechanism, a winding machine, an electromagnetic valve framework mounting mechanism and a discharging mechanism. The winding machine is provided with a winding main shaft, the electromagnetic valve framework mounting mechanism comprises a moving seat and a three-axis moving assembly, and a placing groove of an electromagnetic valve framework is fixed on the moving seat; the containing groove is provided with a feeding opening and a butt joint opening, and the two sides of the butt joint opening are connected with front end limiting blocks through springs. The front-end limiting block adopts a wedge-shaped guide surface and spring linkage design, when the main shaft is propelled, the wedge-shaped surface converts axial thrust into lateral component force to drive the limiting block to move outwards, and mechanical interference is eliminated; when the electromagnetic valve framework is placed, the spring resets to enable the limiting block to retract inwards, the horizontal position of the electromagnetic valve framework is accurately restrained, and deflection or collision caused by traditional rigid limiting is avoided. The top end limiting block is in elastic interference fit with an annular block at the front end of the electromagnetic valve framework through an interference matching structure, the defect that the top is unconstrained is overcome, and deviation in the vertical direction is reduced.

Description

Technical Field

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

[0002] The solenoid valve is the core actuator of industrial automation control. The accuracy of its coil winding directly determines the response speed, sealing performance and service life of the valve body. The existing winding device has significant technical defects in the positioning of the solenoid valve frame, which are mainly reflected in the two core problems of insufficient front-end limit functionality and lack of top limit structure, which restricts the mass production efficiency and yield rate of high-precision solenoid valves.

[0003] Traditional fixtures usually use fixed limit blocks to constrain the horizontal direction of the solenoid valve frame, but in order to avoid mechanical interference between the winding spindle and the fixture, the limit block needs to reserve a large avoidance space. This design results in the solenoid valve frame being able to be accurately positioned only when the dimensions are completely matched, and has very poor adaptability to small dimensional deviations. The solenoid valve frame is prone to deflection or even collision during placement or transportation, which can affect the winding accuracy at best, or even cause deformation of the solenoid valve frame or damage to the spindle.

[0004] Since the robot needs to place the solenoid valve frame vertically from above, the existing fixture cannot set a rigid limit structure on the top and can only rely on the self-weight of the solenoid valve frame and the bottom support to achieve vertical positioning. Under high-speed movement or winding tension, the solenoid valve frame is prone to shaking. Some solutions try to use vacuum adsorption or lateral clamps to assist fixation, but vacuum adsorption has strict requirements on the surface flatness of the solenoid valve frame, and the lateral clamps are easy to interfere with the robot path, and are not adaptable to miniature or special-shaped solenoid valve frames. Summary of the invention

[0005] Purpose of the invention: The purpose of the present invention is to provide a winding device for solenoid valve production and a working method thereof, so as to solve the problems of insufficient front-end limit functionality and lack of top limit structure in the prior art.

[0006] Technical solution:

[0007] A winding device for solenoid valve production, comprising a feeding mechanism, a winding machine, a solenoid valve frame mounting mechanism and a feeding mechanism;

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

[0009] The electromagnetic valve frame installation mechanism comprises a moving seat and a three-axis moving assembly for controlling the movement of the moving seat, and the moving seat is fixedly installed with a placement groove of the electromagnetic valve frame;

[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 electromagnetic valve frame from top to bottom in the placement slot. The bottom surface of the placement slot supports the electromagnetic valve frame. The rear side surface, two side surfaces and two front end limit blocks limit the electromagnetic valve frame in the horizontal direction to prevent displacement.

[0021] S2. Mobile alignment: The three-axis mobile assembly drives the mobile seat to move so that the docking opening of the placement slot is aligned with the winding spindle;

[0022] S3. Install the solenoid valve frame: the three-axis moving assembly drives the moving seat to continue to move forward, the end face of the main shaft contacts the wedge-shaped guide surface of the front end limit block, pushing the front end limit block to slide outward along the slide groove to avoid, and then the three-axis moving assembly continues to drive the moving seat forward to connect the solenoid valve frame with the main shaft;

[0023] S4, the winding machine drives the main shaft to rotate, and cooperates with the winding mechanism to complete the winding operation of the middle annular winding column;

[0024] S5, unloading: the three-axis moving assembly drives the moving seat to move, so that the placement slot moves to the lower end of the solenoid valve frame, and then the three-axis moving assembly continues to drive the moving seat to move upward, so that the solenoid valve frame falls into the placement slot, and then the three-axis moving assembly drives the moving seat to move backward, and the front end limit block drives the solenoid valve frame to separate from the main shaft, and finally the three-axis moving assembly drives the moving seat to move to the unloading mechanism, and the unloading mechanism takes out the solenoid valve frame that has been wound.

[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 force component, driving the top limit block to slide outward along the slide groove. After the solenoid valve skeleton completely falls into the placement groove, the front limit block is reset under the action of the spring, and the top limit block and the front end annular block of the solenoid valve skeleton form an interference fit; 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 force component, driving the top limit block to slide outward along the slide groove, and the solenoid valve skeleton falls into the placement groove; when the unloading mechanism takes out the wound solenoid valve skeleton, the solenoid valve skeleton contacts the lower side of the top limit block to generate a lateral force component, driving the top limit block to slide outward along the slide groove, thereby taking out the solenoid valve skeleton.

[0026] Beneficial effects:

[0027] 1. The front-end limit block adopts a wedge-shaped guide surface and a spring linkage design to achieve the dual functions of "contact means avoidance, reset means locking". When the spindle is advanced, the wedge surface converts the axial thrust into a lateral force, driving the limit block to move smoothly outward along the slide slot, completely eliminating mechanical interference; when the solenoid valve frame is placed, the spring resets the limit block to retract, and the large-area contact surface adaptively constrains the horizontal position of the solenoid valve frame. Even if there is a dimensional deviation, it can still be accurately limited to avoid deflection or collision caused by traditional rigid limits.

[0028] 2. The interference fit structure of the top limit block breaks through the defect of the traditional top without constraints. When the solenoid valve frame is lowered, the top limit block and the front ring block of the solenoid valve frame form an elastic interference fit, so that the vertical offset approaches zero. Since the front ring block of the solenoid valve frame is generally a circular ring structure, while the top limit is being performed, the ring block can also clamp the solenoid valve frame in the center of the placement slot from the side. This non-rigid contact design effectively avoids hard extrusion, which not only ensures positioning accuracy, but also reduces potential damage to the solenoid valve frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The present invention is a three-dimensional Figure 1 ;

[0030] Figure 2 The present invention is a three-dimensional Figure 2 ;

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

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

[0033] Figure 5 It is a schematic diagram of the placement slot of the present invention;

[0034] Figure 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. transverse 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 guide surface; 335. slide groove; 336. top end limit block; 337. terminal slot; 4. unloading mechanism; 5. solenoid valve skeleton; 51. front end ring block; 52. rear end ring block; 53. ring winding column; 54. bending terminal. DETAILED DESCRIPTION

[0035] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Example 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 frame mounting mechanism 3 and a feeding mechanism 4;

[0038] The winding machine 2 is provided with a winding spindle 21.

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

[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 inserting the spindle 21. The two sides of the docking opening 332 are connected with front end limit blocks 333 through springs. The end of the front end limit block 333 close to the spindle 21 is a wedge-shaped guide surface 334 that is laterally separated after being pushed by the end face of the spindle 21, thereby driving the front end limit block 333 to move outward; the limit block connected by the spring forms a horizontal constraint, and the wedge-shaped guide surface 334 converts the spindle thrust 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 a middle annular winding column 53. The solenoid valve 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 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 the solenoid valve skeleton has no relative rotation during winding. The connection structure between the solenoid valve skeleton 5 and the main shaft 21 can adopt the technical structure commonly used in the prior art.

[0042] Furthermore, 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; when the main shaft 21 is advanced, the front end limit block 333 slides outward along the slide groove, and the avoidance distance is dynamically adapted by the main shaft diameter to avoid rigid collision; after the main shaft 21 is withdrawn, the spring tension resets the limit block to re-form the 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 electromagnetic valve frame 5 in the placement groove 33 from top to bottom. The bottom surface of the placement groove 33 supports the electromagnetic valve frame 5. The rear side surface, the two side surfaces and the two front end limit blocks 333 limit the electromagnetic valve frame 5 in the horizontal direction to prevent displacement.

[0052] 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 spindle 21;

[0053] S3, installing the electromagnetic valve frame: 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 electromagnetic valve frame 5 is connected with 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, and 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, 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 solenoid valve skeleton 5 to separate 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 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 force component, driving the top limit block 336 to slide outward along the slide groove 335. After the solenoid valve skeleton completely falls into the placement groove 33, the front end limit block 333 is reset under the action of the spring, and the top limit block 336 forms an interference fit with the front end 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 force component, driving the top limit block 336 to slide outward along the slide 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 force component, driving the top limit block 336 to slide outward along the slide groove 335, thereby taking out the solenoid valve skeleton 5.

[0057] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A winding device for solenoid valve production, characterized in that: It comprises a feeding mechanism (1), a winding machine (2), a solenoid valve frame mounting mechanism (3) and a feeding mechanism (4); The winding machine (2) is provided with a winding spindle (21). The electromagnetic valve frame 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 frame (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) of the solenoid valve comprises a front annular block (51), a rear annular block (52) and a middle annular winding column (53); the solenoid valve 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 the front annular block (51) and the rear annular block (52).

2. A solenoid valve production winding device according to claim 1, characterized in that: 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).

3. A solenoid valve production winding device according to claim 2, characterized in that: The top end of the front end limit block (333) is extended to the rear end to form a top end limit block (336); the top end of the top end limit block (336) is a wedge-shaped guide structure generated by a lateral force generated when the electromagnetic valve frame (5) moves downward, thereby driving the front end 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 electromagnetic valve frame (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 a maximum limit state, the top limit block and the electromagnetic valve frame are in interference fit.

4. A winding device for producing a solenoid valve 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.

5. A solenoid valve production winding device according to claim 3, 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 electromagnetic valve frame (5).

6. A solenoid valve production winding device 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).

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

8. A solenoid valve production winding device 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).

9. 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 electromagnetic valve frame (5), and the rear side surface, two side surfaces and two front end limit blocks (333) limit the electromagnetic valve 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 electromagnetic valve frame: the three-axis moving assembly (32) drives the moving seat (31) to continue to move forward, and 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 electromagnetic valve frame (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 electromagnetic valve frame (5), and then the three-axis moving assembly (32) continues to drive the moving seat (31) to move upward, so that the electromagnetic valve 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 electromagnetic valve 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 electromagnetic valve frame (5) after winding.

10. The working method of the winding device for producing a solenoid valve according to claim 9, characterized in that: In step S1, when the electromagnetic valve 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 electromagnetic valve 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 annular block (51) of the electromagnetic valve frame. In step S5, when the movable seat (31) moves upward, the electromagnetic valve frame (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 slide 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 slide groove (335), thereby taking out the solenoid valve skeleton (5).

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