Buckle assembling mechanism

Abstract

The utility model relates to the technical field of pilot valve assembly, in particular to a buckle assembly mechanism and device.The buckle assembly mechanism comprises a buckle feeding module, a rotating disc and a pushing module, the buckle feeding module is used for feeding a plurality of buckles in sequence, a valve seat is vertically placed on the rotating disc, and the pushing module is used for pushing the buckles to the valve seat. A coil is further placed on the valve seat, clamping grooves are formed in the two sides of the coil and the two sides of the valve seat, and the pushing module can push one buckle output by the buckle feeding module into the corresponding clamping groove in one side of the coil and the corresponding clamping groove in one side of the valve seat. The rotating disc can horizontally rotate by 180 degrees, the propelling module can further push the next buckle output by the buckle feeding module into the corresponding clamping grooves in the other side of the coil and the other side of the valve seat, and the valve seat and the coil are connected in a clamped mode through the two buckles. According to the buckle assembling mechanism, automatic feeding and assembling of buckles can be achieved, the assembling structure is stable, and the assembling efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of pilot valve assembly technology, specifically to a snap-fit ​​assembly mechanism. Background Technology

[0002] A pilot valve is a hydraulic component used to assist in controlling the opening and closing of other valves in a hydraulic system. It is assembled from components such as a coil, valve seat, O-ring, iron core, spring, and clips. Current assembly methods mostly involve manual assembly. For example, first, the O-ring is placed on the valve seat, then the spring is placed in the groove at the top of the iron core. Next, the iron core with the spring is placed in the valve seat, and finally the coil is placed on top. The valve seat and coil are then secured together by clips engaging with corresponding slots on the valve seat and coil.

[0003] Among these issues, manual assembly is inefficient, and the buckles need to be aligned with the slots on the coil and valve seat for installation, which is also inconvenient. In addition, the coil and valve seat need to be kept in the set position to prevent the slots on the coil and valve seat from being misaligned in order to ensure the buckle can be installed. Since the positions of the coil and valve seat need to be kept unchanged during assembly, and the buckles also need to be installed, manual assembly is even more inconvenient. Utility Model Content

[0004] To address the technical problems of low efficiency and inconvenient operation in the manual assembly of pilot valve clips in the prior art, this utility model proposes a clip assembly mechanism that can realize automatic feeding and assembly of clips with high assembly efficiency.

[0005] The technical solution of this utility model:

[0006] A snap-fit ​​assembly mechanism, comprising:

[0007] A buckle feeding module is used to feed a number of buckles sequentially.

[0008] A rotating disk, on which a valve seat is placed vertically, and on which a coil is placed, and on both sides of the coil and the valve seat are provided with slots;

[0009] The push module pushes a snap fastener output from the snap fastener feeding module into a corresponding slot on one side of the coil and valve seat. The rotary disk can rotate 180 degrees horizontally, and the push module can also push the next snap fastener output from the snap fastener feeding module into a corresponding slot on the other side of the coil and valve seat. The valve seat and coil are engaged by two snap fasteners. The outer edge of the slot generally has a certain curvature to facilitate the guiding and engaging of the snap fastener.

[0010] Furthermore, the buckle feeding module includes a vibratory feeder and a feeding line. Several buckles are placed inside the vibratory feeder, and the feeding line is provided at the output end of the vibratory feeder. After passing through the vibratory feeder and the feeding line, the buckles are output in a vertical posture, and the output direction of the buckles is perpendicular to their locking direction. The pushing module includes a side pushing module and a front pushing module. The buckles output by the feeding line are received by the side pushing module and pushed to the side a set distance. After being pushed to the side, the buckles are pushed towards the rotating disk by the front pushing module and pushed into the corresponding slots.

[0011] Furthermore, the snap-fit ​​assembly mechanism also includes a limiting module, which includes a first limiting module and a second limiting module. The first limiting module is located on the side of the rotary disk away from the propulsion module and is used to hold the back of the coil and valve seat during snap-fit ​​assembly. The second limiting module is used to drive a limiting plate to limit the top of the coil during snap-fit ​​assembly. The limiting plate is inverted U-shaped.

[0012] Furthermore, the buckle assembly mechanism also includes a pushing module. Before assembling the buckle, the pushing module drives the rotating disk away from the pushing module. When assembling the buckle, the pushing module drives the rotating disk closer to the pushing module.

[0013] Furthermore, an assembly mechanism and a transfer mechanism are provided upstream of the snap-fit ​​assembly mechanism. The assembly mechanism includes a carrier and an assembly module. A coil, a valve seat, and an iron core spring assembly are vertically placed on the carrier. The assembly module is used to place the iron core spring assembly into the valve seat and to place the coil onto the valve seat on which the iron core spring assembly has already been placed. The transfer mechanism is used to transfer the assembled coil, valve seat, and iron core spring assembly to the rotary table for snap-fit ​​assembly.

[0014] Furthermore, the iron core spring assembly includes an iron core and a spring, with a groove on the top of the iron core to accommodate the spring; an O-ring is also placed on the valve seat.

[0015] Furthermore, the coil, valve seat, and iron core spring assembly are arranged along a straight line, the direction of which is parallel to the insertion direction of the slots on the coil and valve seat; the assembly module includes a first assembly module and a second assembly module, the first assembly module being used to clamp the iron core spring assembly and place it into the valve seat, and the second assembly module being used to clamp the coil and place it onto the valve seat on which the iron core spring assembly has already been placed.

[0016] Furthermore, after the snap-fit ​​assembly is completed, the entire product is clamped by the unloading mechanism and placed at the downstream station. The unloading mechanism includes unloading grippers and a top moving module. The transfer mechanism includes a first transfer module, a second transfer module, and an intermediate transfer module. The first transfer module includes transfer grippers and elastic clamping members. The transfer grippers clamp the valve seat, and the elastic clamping members clamp the top of the coil. The assembled coil, valve seat, and iron core spring assembly are transferred to a rotating disk on the second transfer module via the first transfer module. The second transfer module is located at the bottom of the rotating disk and can drive the rotating disk, the pushing module, and the second limiting module to move together. In the initial state, the second transfer module drives the rotating disk to receive the assembled coil, valve seat, and iron core spring assembly; the intermediate transfer module includes a transfer gripper, which clamps the coil from the side, and the first transfer module can retract; the second limiting module includes a limiting plate, a vertical moving module, and a horizontal moving module. The vertical moving module can drive the limiting plate to move vertically, and the horizontal moving module can drive the limiting plate to move along the moving direction of the second transfer module. The limiting plate moves to the top of the coil for limiting; the transfer gripper opens, and the second transfer module can drive the rotating disk to perform snap-fit ​​assembly.

[0017] After adopting the above technical solution, the buckle assembly mechanism provided by this utility model has the following beneficial effects compared with the prior art: The buckle assembly mechanism provided by this utility model realizes automatic buckle feeding through the buckle feeding module, and automatically pushes the buckle into the corresponding slots of the coil and valve seat on the rotating disk through the push module. Moreover, through the horizontal rotation of the rotating disk, the buckle assembly on both sides of the coil and valve seat can be realized, resulting in high assembly efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the buckle assembly mechanism of this utility model from one perspective;

[0019] Figure 2 for Figure 1 Enlarged view of the structure at point I;

[0020] Figure 3 This is a structural schematic diagram of the buckle assembly mechanism of this utility model from another perspective;

[0021] Figure 4 for Figure 3 Enlarged view of the structure at point II;

[0022] Figure 5 for Figure 3 Enlarged view of the structure at point III;

[0023] Figure 6 This is a schematic diagram of the pilot valve of this utility model after assembly and without the snap-fit. It is shown from one perspective.

[0024] Figure 7 This is a schematic diagram of the pilot valve of this utility model from another perspective after assembly and without the snap-fit.

[0025] Figure 8 This is a schematic diagram of the pilot valve of this utility model after the snap-fit ​​is assembled, viewed from one angle.

[0026] Figure 9 This is a schematic diagram of the pilot valve of this utility model after the snap-fit ​​is assembled, viewed from another angle.

[0027] Figure 10 This is a schematic diagram of the assembly mechanism and the transfer mechanism of this utility model;

[0028] Figure 11 This is a schematic diagram of the assembly mechanism of this utility model;

[0029] Figure 12 This is a schematic diagram of the structure of the vehicle of this utility model;

[0030] Figure 13 This is a schematic diagram of the transfer mechanism of this utility model;

[0031] Figure 14 for Figure 13 Enlarged view of the structure at point IV.

[0032] in,

[0033] The assembly mechanism 1 includes a buckle assembly module 11, a buckle feeding module 11, a vibratory feeder 111, a feeding line 112, a guide groove 1121, a rotary disk 12, a propulsion module 13, a side push module 131, a front push module 132, a limiting module 14, a first limiting module 141, a second limiting module 142, a limiting plate 1421, a vertical movement module 1422, a horizontal movement module 1423, and a pushing module 15; the assembly mechanism 2 includes a carrier 21, an assembly module 22, a first assembly module 221, a first gripper 2211, and a first vertical translation module 15. Module 2212, first lateral translation module 2213, second assembly module 222, second gripper 2221, second vertical translation module 2222, second lateral translation module 2223; transfer mechanism 3, first transfer module 31, transfer gripper 311, elastic clamping member 312, second transfer module 32, intermediate transfer module 33, intermediate transfer gripper 331; coil 100, valve seat 200, slot 300, buckle 400, iron core spring assembly 500, iron core 501, spring 502, O-ring 600. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0037] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0038] like Figure 1-9 As shown, this embodiment provides a snap-fit ​​assembly mechanism 1, which can automatically assemble snap-fit ​​400 in a pilot valve, engaging and connecting the coil 100 and the valve seat 200. Specifically, the snap-fit ​​assembly mechanism 1 includes a snap-fit ​​feeding module 11, a rotating disk 12, and a pushing module 13. The snap-fit ​​feeding module 11 is used to sequentially feed several snap-fit ​​400s. The rotating disk 12 vertically holds the valve seat 200, and the valve seat 200 also holds the coil 100. Figure 6-9As shown, both the first and second sides of the coil 100 and the valve seat 200 are provided with slots 300. The coil 100 and the valve seat 200 can be fixed by snapping in the C-shaped buckles 400. The push module 13 is located at the output end of the buckle feeding module 11 and can push one buckle 400 output by the buckle feeding module 11 into the corresponding slot 300 on one side of the coil 100 and the valve seat 200. The rotating disk 12 can rotate 180 degrees horizontally, for example, driven by a motor or a rotary cylinder, so that the push module 13 can also push the next buckle 400 output by the buckle feeding module 11 into the corresponding slot 300 on the other side of the coil 100 and the valve seat 200. In this way, the coil 100 and the valve seat 200 are snapped together by two buckles 400.

[0039] Thus, the snap-fit ​​assembly mechanism provided in this embodiment, compared with the prior art, achieves automatic feeding of snap-fit ​​400 through snap-fit ​​feeding module 11, and automatically pushes snap-fit ​​400 into the corresponding slots 300 of coil 100 and valve seat 200 on rotary disk 12 through push module 13; moreover, through the horizontal rotation of rotary disk 12, snap-fit ​​400 in the slots 300 on both sides of coil 100 and valve seat 200 can be engaged, improving work efficiency.

[0040] Furthermore, the buckle feeding module 11 of this embodiment includes a vibratory feeder 111 and a feeding line 112. A plurality of buckles 400 are placed inside the vibratory feeder 111, and are fed by vibration. The feeding line 112 is provided at the output end of the vibratory feeder 111, and can sequentially transport the buckles 400 to the target position. A guide structure is provided on the vibratory feeder 111 and the feeding line 112, enabling the buckles 400 to be output in a vertical posture after passing through the vibratory feeder 111 and the feeding line 112, and the output direction of the buckles 400 is perpendicular to their snap-fit ​​direction; for example, as... Figure 5As shown, a guide groove 1121 matching the C-type buckle 400 is provided on the feeding line 112. The guide groove 1121 is L-shaped, and the top edge of the C-type buckle 400 is located at the outer end of the guide groove 1121. Its vertical edge and bottom edge are located in the vertical part and the horizontal part of the guide groove 1121, respectively, so that the buckle 400 is output in a vertical posture to prevent it from tipping over, and it is also convenient for the subsequent push module 13 to push it into the slot 300. The propulsion module 13 includes a side-push module 131 and a front-push module 132. The buckle 400 output from the feeding line 112 is first received by the side-push module 131 and pushed to the side a set distance. The side-push plate at the output end of the side-push module 131 is provided with a receiving groove to receive the buckle 400. The receiving groove is set in a roughly C-shape to conform to the buckle 400 to prevent the buckle 400 from tipping over. After being pushed to the side, the buckle 400 is pushed towards the rotating disk 12 by the front-push plate at the output end of the front-push module 132 and pushed into the corresponding buckle slot 300. There is also a slot in a roughly C-shape to conform to the buckle 400 on the pushing path to prevent the buckle 400 from tipping over. The buckle 400 maintains its vertical posture throughout the entire pushing process. In this embodiment, by setting the side push module 131 to push the buckle 400 to the side, the buckle 400 can be pushed into the corresponding slot 300 by the front push module 132.

[0041] Furthermore, the buckle assembly mechanism 1 also includes a limiting module 14, which is used to limit the coil 100 and valve seat 200 when the buckle 400 is pushed in. Specifically, the limiting module 14 includes a first limiting module 141 and a second limiting module 142. The first limiting module 141 is located on the side of the rotating disk 12 away from the pushing module 13, and is used to hold the back of the coil 100 and valve seat 200 during buckle 400 assembly. The second limiting module 142 includes a limiting plate 1421, which is used to limit the top of the coil 100 during buckle 400 assembly. The limiting plate 1421 is inverted U-shaped, and in addition to limiting the top of the coil 100, it can also limit its left and right sides to prevent the buckle slot 300 from shifting left and right.

[0042] Furthermore, the snap-fit ​​assembly mechanism 1 also includes a pushing module 15, which is located at the bottom of the rotation drive component of the rotating disk 12 and can drive the rotating disk 12 to move toward or away from the pushing module 13. Specifically, before assembling the snap-fit ​​400, the pushing module 15 drives the rotating disk 12 away from the pushing module 13. At this time, the rotating disk 12 can rotate, and the coil 100 and valve seat 200 on it will not touch the output end of the pushing module 13. When assembling the snap-fit ​​400, the pushing module 15 drives the rotating disk 12 closer to the pushing module 13, so that the coil 100 and valve seat 200 are close to the output end of the pushing module 13. Of course, during the movement of the pushing module 15, the aforementioned first limiting module 141 and second limiting module 142 also need to move adaptively, limiting the coil 100 and valve seat 200 only when the buckle 400 is assembled; preferably, the second limiting module 142 can be set on the pushing module 15, and the second limiting module 142 does not need to move along the movement direction of the pushing module 15, simplifying the structure of the second limiting module 142.

[0043] like Figure 10-14 As shown, an assembly mechanism 2 and a transfer mechanism 3 are also provided upstream of the buckle assembly mechanism 1. The assembly mechanism 2 includes a carrier 21 and an assembly module 22. The carrier 21 has a coil 100, a valve seat 200 and an iron core spring assembly 500 placed vertically on it. The assembly module 22 is used to place the iron core spring assembly 500 into the valve seat 200 and to place the coil 100 onto the valve seat 200 on which the iron core spring assembly 500 has already been placed. The iron core spring assembly 500 includes an iron core 501 and a spring 502. The top of the iron core 501 has a groove to accommodate the spring 502. An O-ring 600 for sealing is also placed on the valve seat 200. The coil 100, valve seat 200 and iron core spring assembly 500 on the carrier 21 can be placed manually or automatically fed upstream by a conveyor belt or other conveying mechanism and then transported to the assembly mechanism 2. The transfer mechanism 3 is used to transfer the assembled coil 100, valve seat 200 and iron core spring assembly 500 to the rotary disk 12 for the assembly of the snap fastener 400.

[0044] Preferably, the coil 100, valve seat 200, and iron core spring assembly 500 are arranged in a straight line, thereby simplifying the structure of the assembly module 22. The assembly module 22 can omit the lateral linear module in this straight arrangement direction. More preferably, the direction of this straight arrangement is parallel to the insertion direction of the slots 300 on the coil 100 and valve seat 200, so that after the assembled coil 100, valve seat 200, and iron core spring assembly 500 are placed on the rotating disk 12, the slots 300 on them can be directly aligned with the output end of the push module 13 without the need for the rotating disk 12 to be rotated to adjust the angle. Further, the assembly module 22 includes a first assembly module 221 and a second assembly module 222. The first assembly module 221 is used to clamp the iron core spring assembly 500 and place it into the valve seat 200, and the second assembly module 222 is used to clamp the coil 100 and place it onto the valve seat 200 where the iron core spring assembly 500 has already been placed. Specifically, the first assembly module 221 includes a first gripper 2211, a first vertical translation module 2212, and a first horizontal translation module 2213. After the first gripper 2211 grips the iron core spring assembly 500, it is first driven to rise by the first vertical translation module 2212, then driven to move along the aforementioned straight-line arrangement by the first horizontal translation module 2213, and then driven to fall by the first vertical translation module 2212 to place the iron core spring assembly 500 in the valve seat 200. At this time, the components in the first assembly module 221 can remain in their current positions until the second assembly module 222 grips the coil. 100 allows the core spring assembly 500 to enter the coil 100 and then reset, which is more conducive to the installation of the core spring assembly 500 and the coil 100; the second assembly module 222 includes a second gripper 2221, a second vertical translation module 2222 and a second horizontal translation module 2223. After the second gripper 2221 grips the coil 100, it is first driven to rise by the second vertical translation module 2222, then driven to move along the aforementioned straight line arrangement by the second horizontal translation module 2223, and then driven to fall by the second vertical translation module 2222 to place the coil 100 on the valve seat 200.

[0045] In addition, after the snap-fit ​​400 is assembled, the entire product is clamped by a feeding mechanism (not shown in the figure) and placed at the downstream station. The feeding mechanism includes feeding grippers and a top moving module. Since the feeding mechanism is equipped with a top moving module, a propulsion module 13, a first limiting module 141 and a second limiting module 142 are also provided around the rotating disk 12. In order to facilitate the transfer of the assembled coil 100, valve seat 200 and iron core spring assembly 500, this embodiment is also provided that the rotating disk 12 can move toward the assembly mechanism 2 to receive the assembled coil 100, valve seat 200 and iron core spring assembly 500.

[0046] Specifically, the transfer mechanism 3 includes a first transfer module 31, a second transfer module 32, and an intermediate transfer module 33. The first transfer module 31 includes a transfer gripper 311 and an elastic clamping member 312, as well as two moving modules, one horizontal and one vertical. The transfer gripper 311 grips the valve seat 200, and the elastic clamping member 312 clamps the top of the coil 100. The assembled coil 100, valve seat 200, and iron core spring assembly 500 are transferred through the first transfer module 31 to the rotating disk 12 on the second transfer module 32. The rotating disk 12 needs to be moved to this position in advance. The second transfer module 32 is located at the bottom of the rotating disk 12 and can drive the rotating disk 12, the pushing module 15, and the second limiting module 142 to move together. In the initial state, the second transfer module 32 drives the rotating disk 12 to receive the assembled coil 100. The first transfer module 33 includes a coil 100, a valve seat 200, and an iron core spring assembly 500. The intermediate transfer module 33 includes a transfer gripper 331, which grips the coil 100 from the side. The first transfer module 31 can retract to facilitate the subsequent movement of the second limiting module 142. The second limiting module 142 includes a limiting plate 1421, a vertical moving module 1422, and a horizontal moving module 1423. The vertical moving module 1422 can drive the limiting plate 1421 to move vertically, and the horizontal moving module 1423 can drive the limiting plate 1421 to move along the moving direction of the second transfer module 32. The limiting plate 1421 moves to the top of the coil 100 for limiting. At this time, the transfer gripper 331 can open, and the second transfer module 32 can drive the rotating disk 12 to move for the assembly of the buckle 400.

[0047] Preferably, the second assembly module 222 in the aforementioned assembly module 22, which is used to place the coil 100 onto the valve seat 200, can share a structure with the first transfer module 31 in the transfer mechanism 3, saving space and cost.

[0048] As can be seen from the above, the snap-fit ​​assembly mechanism provided in this embodiment can realize automatic feeding and assembly of snap-fits, and the assembly structure is stable and the assembly efficiency is high.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A snap-fit ​​assembly mechanism, characterized in that, include: The buckle feeding module (11) is used to feed a plurality of buckles (400) sequentially; A rotating disk (12) is provided with a valve seat (200) placed vertically on the rotating disk (12). A coil (100) is also placed on the valve seat (200). The coil (100) and the valve seat (200) are provided with slots (300) on both sides. The push module (13) can push a buckle (400) output by the buckle feeding module (11) into the corresponding slot (300) on one side of the coil (100) and valve seat (200); the rotating disk (12) can rotate horizontally 180 degrees, and the push module (13) can also push the next buckle (400) output by the buckle feeding module (11) into the corresponding slot (300) on the other side of the coil (100) and valve seat (200), and the valve seat (200) and coil (100) are engaged by two buckles (400).

2. The snap-fit ​​assembly mechanism according to claim 1, characterized in that, The buckle feeding module (11) includes a vibratory feeder (111) and a feeding line (112). Several buckles (400) are placed inside the vibratory feeder (111). The feeding line (112) is set at the output end of the vibratory feeder (111). The buckles (400) are output in a vertical posture after passing through the vibratory feeder (111) and the feeding line (112), and the output direction of the buckles (400) is perpendicular to its snap-fit ​​direction. The pushing module (13) includes a side-pushing module (131) and a front-pushing module (132). The buckles (400) output by the feeding line (112) are received by the side-pushing module (131) and pushed to the side by a set distance. After being pushed to the side, the buckles (400) are pushed towards the rotating disk (12) by the front-pushing module (132) and pushed into the corresponding snap-fit ​​slot (300).

3. The snap-fit ​​assembly mechanism according to claim 2, characterized in that, The buckle assembly mechanism further includes a limiting module (14), which includes a first limiting module (141) and a second limiting module (142). The first limiting module (141) is located on the side of the rotating disk (12) away from the propulsion module (13) and is used to press against the back of the coil (100) and the valve seat (200) when the buckle (400) is assembled. The second limiting module (142) is used to drive the limiting plate (1421) to limit the top of the coil (100) when the buckle (400) is assembled. The limiting plate (1421) is inverted U-shaped.

4. The snap-fit ​​assembly mechanism according to claim 3, characterized in that, The buckle assembly mechanism also includes a pushing module (15). Before assembling the buckle (400), the pushing module (15) drives the rotating disk (12) away from the pushing module (13). When assembling the buckle (400), the pushing module (15) drives the rotating disk (12) closer to the pushing module (13).

5. The snap-fit ​​assembly mechanism according to claim 4, characterized in that, The upstream of the snap-fit ​​assembly mechanism is also provided with an assembly mechanism (2) and a transfer mechanism (3). The assembly mechanism (2) includes a carrier (21) and an assembly module (22). The carrier (21) has a coil (100), a valve seat (200) and an iron core spring assembly (500) placed vertically on it. The assembly module (22) is used to place the iron core spring assembly (500) into the valve seat (200) and to place the coil (100) onto the valve seat (200) on which the iron core spring assembly (500) has been placed. The transfer mechanism (3) is used to transfer the assembled coil (100), valve seat (200) and iron core spring assembly (500) to the rotary disk (12) for snap-fit ​​(400) assembly.

6. The snap-fit ​​assembly mechanism according to claim 5, characterized in that, The iron core spring assembly (500) includes an iron core (501) and a spring (502). The top of the iron core (501) is provided with a groove to accommodate the spring (502). An O-ring (600) is also placed on the valve seat (200).

7. The snap-fit ​​assembly mechanism according to claim 6, characterized in that, The coil (100), valve seat (200), and iron core spring assembly (500) are arranged in a straight line, the direction of which is parallel to the insertion direction of the slots (300) on the coil (100) and valve seat (200); the assembly module (22) includes a first assembly module (221) and a second assembly module (222), the first assembly module (221) is used to clamp the iron core spring assembly (500) and place it into the valve seat (200), and the second assembly module (222) is used to clamp the coil (100) and place it onto the valve seat (200) on which the iron core spring assembly (500) has been placed.

8. The snap-fit ​​assembly mechanism according to claim 7, characterized in that, After the snap fastener (400) is assembled, the entire product is clamped by the unloading mechanism and placed at the downstream station. The unloading mechanism includes unloading jaws and a top moving module. The transfer mechanism (3) includes a first transfer module (31), a second transfer module (32), and an intermediate transfer module (33). The first transfer module (31) includes a transfer jaw (311) and an elastic clamping member (312). The transfer jaw (311) clamps the valve seat (200), and the elastic clamping member (312) clamps the valve seat (200). The coil (100), valve seat (200), and iron core spring assembly (500) are then pressed against the top of the coil (100). The assembled coil (100), valve seat (200), and iron core spring assembly (500) are transferred to the rotating disk (12) on the second transfer module (32) via the first transfer module (31). The second transfer module (32) is located at the bottom of the rotating disk (12) and can drive the rotating disk (12), the pushing module (15), and the second limiting module (142) to move together. In the initial state, the second transfer module (31) is pressed against the top of the coil (100). 2) Drive the rotating disk (12) to receive the assembled coil (100), valve seat (200) and iron core spring assembly (500); the intermediate transfer module (33) includes a transfer gripper (331), which clamps the coil (100) from the side, and the first transfer module (31) can retract; the second limiting module (142) includes a limiting plate (1421), a vertical moving module (1422) and a horizontal moving module (1423), The vertical moving module (1422) can drive the limiting plate (1421) to move vertically, and the horizontal moving module (1423) can drive the limiting plate (1421) to move along the moving direction of the second transfer module (32). The limiting plate (1421) moves to the top of the coil (100) for limiting. The transfer gripper (331) opens, and the second transfer module (32) can drive the rotating disk (12) to move to perform buckle (400) assembly.

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