A one-way valve assembly

CN224795053UActive Publication Date: 2026-09-25KUNSHAN MEISTER AUTOMATION TECH CO LTD
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Patent Information

Application Number
CN202521897620.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-04
Publication Date
2026-09-25
Estimated Expiration
2035-09-04

AI Technical Summary

Technical Problem

这一作用力使得上壳体与下壳体之间容易出现松动现象,影响单向阀整体结构的稳定性与装配质量,可能导致后续使用过程中出现连接不紧密等问题

Benefits of technology

[0016]采用上述技术方案,具有以下有益效果:通过载板组件、横移组件和压装组件相互配合能自动化实现单向阀的组装,并在装配过程中依靠定位组件解决因上壳体向上的牵引力引起的壳体松动问题,并针对横移组件上的搬运组件进行改进,使其下压过程中具备弹性,避免对阀体密封处进行挤压,解决阀片装配不平引起的密封不良问题。

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Abstract

The utility model discloses a one -way valve assembly mechanism, including bottom plate, is equipped with the carrier plate subassembly, horizontal transfer subassembly and press -fitting subassembly on it, the horizontal carrier plate of carrier plate subassembly is driven under the first drive subassembly and moves horizontally, and it has the valve piece storage rack and lower casing storage rack, and places valve piece and lower casing respectively, valve piece storage rack can switch in valve piece feeding station and first loading station, and lower casing storage rack can switch in first loading station and lower casing loading station, the carrying subassembly of horizontal transfer subassembly is used for adsorbing / releasing valve piece, and switches between first loading station and oil injection station under the drive of horizontal transfer subassembly, and oil injection station has oil injection subassembly and sprays oil to valve piece, and carrying subassembly can still load valve piece after oil injection into lower casing in first loading station, press -fitting subassembly installs upper casing and vertically presses down to the lower casing of lower casing loading station, and the outside of lower casing loading station has the locating assembly and vertically limits upper casing, realizes the automatic assembly and solves the shell loose problem.
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Description

Technical Field

[0001] This utility model belongs to the field of valve body assembly technology and relates to a one-way valve assembly mechanism. Background Technology

[0002] In the assembly of check valves, manual semi-mechanized assembly methods are currently the primary approach. The installation process for check valves has certain requirements: the valve disc must first be sprayed with oil and placed on the valve core of the lower housing, and then the upper housing is pressed onto the lower housing. However, this existing assembly method has some problems.

[0003] On the one hand, when the upper housing is pressed onto the lower housing, an upward pulling force is generated on the upper housing during the reset process. This force makes it easy for the upper and lower housings to loosen, affecting the stability of the overall structure and assembly quality of the check valve, and may lead to problems such as loose connections during subsequent use.

[0004] On the other hand, the accuracy of valve plate installation is difficult to guarantee, and improper installation often occurs. As a key component of the check valve, improper installation of the valve plate can lead to poor sealing, resulting in leakage during use and severely affecting the performance and normal operation of the check valve. Utility Model Content

[0005] The purpose of this invention is to provide a one-way valve assembly mechanism that enables rapid assembly of one-way valves through mutual cooperation and solves at least one problem in the background art.

[0006] The objective of this utility model is achieved through the following technical solution: A one-way valve assembly mechanism includes a base plate, on which a carrier plate assembly, a transverse moving assembly, and a pressing assembly are disposed; The carrier plate assembly includes a horizontal carrier plate, which moves laterally in the horizontal direction under the drive of a first drive assembly. The horizontal carrier plate is provided with a valve plate holder and a lower housing holder, which are used to place valve plates and lower housings, respectively. The valve plate holder moves synchronously with the horizontal carrier plate and can switch back and forth between the valve plate loading station and the first loading station under the drive of the first drive assembly. The lower housing holder moves synchronously with the horizontal carrier plate and can switch back and forth between the first loading station and the lower housing loading station under the drive of the first drive assembly. The transverse component is equipped with a conveying component, which is used to adsorb / release valve plates; the transverse component drives the conveying component to switch back and forth between the first loading station and the oil injection station; the oil injection station is equipped with an oil injection component, which is used to spray oil onto the valve plates on the conveying component; at the first loading station, the conveying component can install the oil-sprayed valve plates onto the valve core in the lower housing. The pressing assembly is equipped with an upper housing, which is then pressed vertically down onto the lower housing at the lower housing loading station. A positioning assembly is provided on the outside of the lower housing loading station to vertically limit the position of the upper housing.

[0007] As a further improvement of one embodiment of the present invention, the first driving assembly includes a driving cylinder and a linear slide rail disposed on a base plate, a slider disposed on the linear slide rail, and a horizontal carrier plate disposed on the slider; the piston end of the driving cylinder is fixedly connected to the horizontal carrier plate through a connector; limiters are disposed on both sides of the linear slide rail.

[0008] As a further improvement of one embodiment of the present invention, the transverse moving assembly includes a pair of support columns fixed on the base plate, a rodless cylinder is transversely arranged on the support columns through a fixing plate, a vertical carrier plate is arranged on the sliding part of the rodless cylinder, and the conveying assembly is arranged on the vertical carrier plate.

[0009] As a further improvement of one embodiment of this utility model, the conveying assembly includes a vertical cylinder, the piston end of which is fixedly connected to a vertical slide plate. An L-shaped support plate is provided on the vertical slide plate, and a push rod is provided on the support plate. A fixing sleeve and an adsorption sleeve are sequentially fitted on the push rod. A spring is provided inside the fixing sleeve, one end of which is fixed to the fixing sleeve and the other end is fixed to the support plate. The adsorption sleeve is fixed to the fixing sleeve, and an adsorption channel is provided inside the adsorption sleeve. The adsorption channel forms an adsorption port at the bottom of the adsorption sleeve, and the adsorption channel is connected to an external vacuuming device. The lower end of the push rod has a groove that matches the valve core.

[0010] As a further improvement of one embodiment of the present invention, a vertical through hole is provided through the top rod, the vertical through hole being vertically upward and penetrating the support plate.

[0011] As a further improvement of one embodiment of the present invention, the oil injection assembly includes an oil injector disposed below the base plate, the nozzle of the oil injector facing upward and exposed above the base plate, and a protective cover covering the oil injector and its nozzle is provided on the base plate, the protective cover having a notch for the moving assembly to pass through.

[0012] As a further improvement of one embodiment of this utility model, the pressing assembly includes a support column fixed to a base plate, a pressing support plate vertically arranged on the support column, a vertical slide rail arranged on the pressing support plate, a slider arranged on the vertical slide rail, an upper housing fixing block arranged on the slider, a lifting cylinder arranged on the pressing support plate, the piston end of the lifting cylinder being connected to the upper end of the upper housing fixing block, an upper housing cavity arranged below the upper housing fixing block, an upper housing being placed inside the upper housing cavity, a bolt hole communicating with the upper housing cavity being provided on the upper housing fixing block, a retaining bolt being provided in the bolt hole, and the retaining bolt being used to position the upper housing within the upper housing cavity.

[0013] As a further improvement of one embodiment of the present invention, the positioning component includes a positioning plate, one end of which is connected to a positioning cylinder via a connecting plate, and the positioning cylinder is fixed to the base plate via a support plate; the front end of the positioning plate has a pressing groove corresponding to the contour of the upper housing.

[0014] As a further improvement of one embodiment of the present utility model, two sets of proximity switches are provided on the outer side of the press-fit support plate. The two sets of proximity switches are respectively used to detect whether the lower housing and the valve plate inside it at the first loading station are installed correctly.

[0015] As a further improvement of one embodiment of the present invention, a sensor is provided inside the valve plate holder, and the sensor is used to monitor whether a valve plate is placed on the valve plate holder.

[0016] The above technical solution has the following advantages: the assembly of the one-way valve can be automated by the cooperation of the carrier plate assembly, the transverse moving assembly and the press-fitting assembly. During the assembly process, the positioning assembly solves the problem of loosening of the housing caused by the upward traction force of the upper housing. Furthermore, the conveying assembly on the transverse moving assembly is improved to make it elastic during the downward pressing process, so as to avoid squeezing the valve body seal and solve the problem of poor sealing caused by uneven valve plate assembly. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0019] Figure 1 A three-dimensional structural diagram of this utility model.

[0020] Figure 2 A three-dimensional structural diagram (hidden protective cover) is provided for this utility model.

[0021] Figure 3 A schematic diagram of the structure of the carrier plate assembly provided by this utility model on the base plate.

[0022] Figure 4 A schematic diagram of the handling component structure provided by this utility model.

[0023] Figure 5 for Figure 4 Schematic diagram of the cross section of AA.

[0024] Figure 6 A schematic diagram of the valve plate storage rack structure provided by this utility model.

[0025] Figure 7 A schematic diagram of the combination of the lower shell shelf and positioning component provided by this utility model.

[0026] Figure 8 This is a schematic diagram of the press-fitting assembly structure provided by this utility model.

[0027] In the picture: 1. Base plate; 2. Carrier plate assembly; 21. Horizontal carrier plate; 22. Valve plate storage rack; 23. Lower shell storage rack; 24. Drive cylinder; 25. Linear guide rail; 26. Limit switch; 27. Sensor; 3. Lateral movement component; 31, 41, Support columns; 32. Rodless cylinder; 33. Vertical carrier plate; 4. Press-fit components; 42. Press-fit support plate; 43. Vertical slide rail; 44. Upper shell fixing block; 45. Lifting cylinder; 46. ​​Hold the bolt in place; 5. Handling components; 51. Vertical cylinder; 52. Vertical skateboard; 53, 74, support plate; 54. Top rod; 541. Groove; 55. Fixing sleeve; 56. Adsorption sleeve; 561. Adsorption channel; 57. Spring; 6. Fuel injection assembly; 61. Fuel injector; 62. Protective cover; 7. Positioning components; 71. Positioning plate; 72. Connecting plate; 73. Positioning cylinder; 81, 82, proximity switches. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] See Figures 1-8 As shown, a one-way valve assembly mechanism includes a base plate 1, which serves as the mounting foundation for the entire mechanism and provides stable support for each component. A carrier plate assembly 2, a transverse movement assembly 3, and a pressing assembly 4 are mounted on the base plate 1.

[0032] The carrier plate assembly 2 includes a horizontal carrier plate 21, which moves laterally in the horizontal direction under the drive of the first drive assembly. The horizontal carrier plate 21 is provided with a valve plate holder 22 and a lower housing holder 23, which are used to place valve plates and lower housings, respectively. The valve plate holder 22 moves synchronously with the horizontal carrier plate 21 and can switch back and forth between the valve plate loading station and the first loading station under the drive of the first drive assembly. The lower housing holder 23 moves synchronously with the horizontal carrier plate 21 and can switch back and forth between the first loading station and the lower housing loading station under the drive of the first drive assembly.

[0033] The transverse component 3 is equipped with a conveying component 5, which is used to adsorb / release the valve plate; the transverse component 3 drives the conveying component 5 to switch back and forth between the first loading station and the oil injection station. The oil injection station is equipped with an oil injection component 6, which is used to spray oil onto the valve plate on the conveying component 5; at the first loading station, the conveying component 5 can install the oil-sprayed valve plate onto the valve core in the lower housing.

[0034] The upper housing is mounted on the press-fit assembly 4, and the upper housing is pressed vertically downward onto the lower housing at the lower housing loading station. A positioning assembly 7 is provided on the outside of the lower housing loading station to vertically limit the upper housing. The application of the positioning assembly 7 avoids the problem of housing loosening caused by the upward traction force of the upper housing.

[0035] This one-way valve assembly mechanism is a component of the complete valve body assembly equipment. It shares the control system, power supply system, gas supply system, and vacuum system of the valve body assembly equipment. Through a unified interface and operating instructions, it enables the coordinated operation of each link and achieves automated production.

[0036] The first drive assembly provides power and guidance for the horizontal movement of the carrier assembly 2. Specifically, as follows: Figure 3 As shown, a drive cylinder 24 and a linear slide rail 25 are rationally arranged on the base plate 1. A matching slider is installed on the linear slide rail 25, which can slide smoothly and steadily on the linear slide rail 25. The horizontal carrier plate 21 is securely mounted on the slider with bolts or other fasteners to ensure reliable connection and synchronous movement between the two. The drive cylinder 24 serves as the power source, and its piston end is fixedly connected to the horizontal carrier plate 21 through a connector, accurately transmitting the power of the drive cylinder 24 to the horizontal carrier plate 21, driving it to move horizontally along the linear slide rail 25.

[0037] To ensure precise and controllable movement range of the horizontal carrier plate 21, limiters 26 are installed on both sides of the linear slide rail 25. The limiters 26 can be mechanical limit switches. When the horizontal carrier plate 21 moves to the set position, the limiters 26 block the movement of the horizontal carrier plate 21 to prevent the horizontal carrier plate 21 from exceeding the safe movement range.

[0038] Combination Figure 6As shown, the sensor 27 installed inside the valve plate holder 22 can be an infrared sensor or similar device. When the valve plate is placed on the valve plate holder 22, the sensor 27 can accurately detect the presence of the valve plate and feed the signal back to the control system to ensure the smooth progress of subsequent assembly processes and avoid material shortages.

[0039] In this embodiment, the lateral movement component 3 includes a pair of support columns 31 fixed to the base plate 1. These support columns 31 form a basic support structure and can be made of high-strength metal to ensure structural stability. A rodless cylinder 32 is laterally mounted on the support columns 31 via a fixing plate. The height of the rodless cylinder 32 on the support columns 31 is adjustable. A vertical carrier plate 33 is mounted on the sliding component of the rodless cylinder 32, and the vertical carrier plate 33 is tightly connected to the sliding component by bolts. The transport component 5 is fixed to the vertical carrier plate 33 and achieves lateral position switching with the movement of the rodless cylinder 32.

[0040] The handling component 5 is mainly used for the adsorption, handling, and placement of the valve plates. Combined with... Figure 4 , Figure 5 As shown, the conveying assembly 5 includes a vertical cylinder 51, the piston end of which is fixedly connected to a vertical slide plate 52 to ensure stable power transmission. The vertical slide plate 52 moves vertically up and down under the drive of the vertical cylinder 51.

[0041] An L-shaped support plate 53 is provided on the vertical slide plate 52. A top rod 54 is provided on the support plate 53. A fixing sleeve 55 and an adsorption sleeve 56 are sequentially fitted on the top rod 54. A spring 57 is provided inside the fixing sleeve 55. One end of the spring 57 is welded inside the fixing sleeve 55, and the other end is welded to the support plate 53, which plays a role in buffering and resetting.

[0042] The adsorption sleeve 56 is tightly fixed to the fixed sleeve 55. It has an adsorption channel 561 inside, which forms an adsorption port at the bottom of the adsorption sleeve 56. This port is connected to an external vacuum pump via a pipe to achieve the adsorption of the valve plate. The lower end of the push rod 54 has a groove 541 that matches the valve core, preventing collision and contact between the valve plate and the valve core inside the lower housing during valve plate placement.

[0043] In this embodiment, the fuel injection assembly 6 includes a fuel injector 61 disposed below the base plate 1. The nozzle of the fuel injector 61 faces upward and is exposed above the base plate 1. This layout saves space and ensures accurate fuel injection direction. To protect the fuel injector 61 and its nozzle and prevent fuel spillage from affecting the environment, a protective cover 62 is provided on the base plate 1. The protective cover 62 can be made of metal or high-strength plastic and completely covers the fuel injector 61 and its nozzle. At the same time, the protective cover 62 is specially provided with a notch for the moving transport assembly 5 to pass through. The size of the notch is reasonably designed according to the size of the transport assembly 5 to ensure that the transport assembly 5 can pass through smoothly. Without affecting the normal operation of the transport assembly 5, it provides reliable protection for the fuel injector 61 and ensures the stable operation of the fuel injection assembly 6.

[0044] Press-fit assembly 4 is used to precisely press the upper housing onto the lower housing. (Combined) Figure 8 As shown, the press-fit assembly 4 includes a support column 41, which is securely fixed to a suitable location such as a base plate, providing basic support for the entire assembly. A press-fit support plate 42 is vertically mounted on the support column 41, and the height of the press-fit support plate 42 on the support column 41 is adjustable.

[0045] A vertical slide rail 43 is provided on the press-fit support plate 42 to ensure the smoothness and accuracy of the slider movement. An upper housing fixing block 44 is installed on the slider, and the upper housing fixing block 44 moves up and down along the vertical slide rail 43 with the slider. A lifting cylinder 45 is installed on the press-fit support plate 42, and its piston end is connected to the upper end of the upper housing fixing block 44 to provide lifting power for the upper housing fixing block 44. An upper housing cavity is provided below the upper housing fixing block 44 for placing the upper housing. Bolt holes communicating with the upper housing cavity are provided on the upper housing fixing block 44, and retaining bolts 46 are installed in the bolt holes. By rotating the retaining bolts 46, the upper housing can be firmly positioned within the upper housing cavity.

[0046] In this embodiment, the two sets of proximity switches 81 and 82 mounted on the outside of the press-fit support plate 42 are key detection components to ensure assembly quality. These two sets of proximity switches can also be replaced by components with similar detection functions, such as photoelectric sensors.

[0047] Proximity switches 81 and 82 are responsible for detecting the correct installation of the lower housing and its internal valve plates at the first loading station. The vertical through hole on the top rod 54 provides a channel for the detection light of proximity switch 81. This vertical through hole extends vertically upward through the support plate 53, ensuring that the light can pass through smoothly.

[0048] During operation, the light emitted by proximity switch 81 passes through the vertical through-hole and illuminates the valve core position on the lower housing. By analyzing signals such as the reflected light, it is determined whether the lower housing is installed correctly. Proximity switch 82 directly detects the lower housing to determine whether a valve plate is installed on it. The two sets of proximity switches work together to effectively avoid assembly problems caused by incorrect installation of the lower housing or valve plate, thus improving the assembly pass rate of the check valve.

[0049] Positioning component 7 is mainly used for precise positioning of the upper housing during mechanical assembly to prevent it from loosening. Combined with... Figure 7 As shown, the positioning component 7 includes a positioning plate 71. One end of the positioning plate 71 is connected to the positioning cylinder 73 via a connecting plate 72. The positioning cylinder 73 is fixed to the base plate 1 via a support plate 74.

[0050] The positioning plate 71 has a crimping groove at its front end that corresponds to the contour of the upper housing. The shape and size of the crimping groove are precisely designed according to the actual shape of the upper housing. In use, the positioning cylinder 73 pushes the positioning plate 71 forward, so that the crimping groove fits tightly with the upper housing, and the upper housing is vertically limited. This effectively prevents the upper housing from becoming loose due to upward traction during mechanical assembly, ensuring the accuracy and quality of the assembly.

[0051] This invention utilizes the cooperation of the carrier plate assembly 2, the transverse moving assembly 3, and the pressing assembly 4 to automate the oil spraying of the valve plate, the installation of the valve plate, and the assembly of the upper and lower housings, thus automating the assembly of the one-way valve. Simultaneously, during assembly, a positioning cylinder pushes the positioning plate, causing the pressing groove at the front end of the positioning plate to fit tightly against the upper housing, vertically limiting the upper housing and effectively solving the problem of housing loosening caused by the upward traction force of the upper housing.

[0052] Improvements were made to the conveying component 5 on the transverse assembly 3. A spring was installed inside the fixed sleeve of the push rod, giving the conveying component 5 elasticity during downward pressing. When the conveying component 5 contacts the valve body, the spring acts as a buffer, preventing excessive compression of the valve body seal. This effectively solves the sealing problem caused by uneven valve plate assembly, improving the assembly quality and sealing performance of the check valve.

[0053] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0054] 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.

[0055] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A one-way valve assembly mechanism, characterized in that, Includes a base plate, on which a carrier plate assembly, a transverse moving assembly, and a pressing assembly are disposed; The carrier plate assembly includes a horizontal carrier plate, which moves laterally in the horizontal direction under the drive of a first drive assembly. The horizontal carrier plate is provided with a valve plate holder and a lower housing holder, which are used to place valve plates and lower housings, respectively. The valve plate holder moves synchronously with the horizontal carrier plate and can switch back and forth between the valve plate loading station and the first loading station under the drive of the first drive assembly. The lower housing holder moves synchronously with the horizontal carrier plate and can switch back and forth between the first loading station and the lower housing loading station under the drive of the first drive assembly. The transverse component is equipped with a conveying component, which is used to adsorb / release valve plates; the transverse component drives the conveying component to switch back and forth between the first loading station and the oil injection station; the oil injection station is equipped with an oil injection component, which is used to spray oil onto the valve plates on the conveying component; at the first loading station, the conveying component can install the oil-sprayed valve plates onto the valve core in the lower housing. The pressing assembly is equipped with an upper housing, which is then pressed vertically down onto the lower housing at the lower housing loading station. A positioning assembly is provided on the outside of the lower housing loading station to vertically limit the position of the upper housing.

2. The one-way valve assembly mechanism according to claim 1, characterized in that, The first drive assembly includes a drive cylinder and a linear slide rail mounted on a base plate. A slider is mounted on the linear slide rail, and a horizontal carrier plate is mounted on the slider. The piston end of the drive cylinder is fixedly connected to the horizontal carrier plate via a connector. Limiters are provided on both sides of the linear slide rail.

3. The one-way valve assembly mechanism according to claim 1, characterized in that, The lateral movement assembly includes a pair of support columns fixed to the base plate. A rodless cylinder is laterally mounted on the support columns via a fixing plate. A vertical carrier plate is mounted on the sliding part of the rodless cylinder. The conveying assembly is mounted on the vertical carrier plate.

4. The one-way valve assembly mechanism according to claim 3, characterized in that, The conveying assembly includes a vertical cylinder, the piston end of which is fixedly connected to a vertical slide plate. An L-shaped support plate is provided on the vertical slide plate, and a push rod is provided on the support plate. A fixing sleeve and an adsorption sleeve are sequentially fitted on the push rod. A spring is provided inside the fixing sleeve, with one end of the spring fixed to the fixing sleeve and the other end fixed to the support plate. The adsorption sleeve is fixed to the fixing sleeve and has an adsorption channel inside. The adsorption channel forms an adsorption port at the bottom of the adsorption sleeve and is connected to an external vacuum device. The lower end of the push rod has a groove that matches the valve core.

5. The one-way valve assembly mechanism according to claim 4, characterized in that, A vertical through hole is provided on the top rod, and the vertical through hole is vertically upward and passes through the support plate.

6. The one-way valve assembly mechanism according to claim 1, characterized in that, The fuel injection assembly includes a fuel injector disposed below the base plate, with the nozzle of the fuel injector facing upward and exposed above the base plate. The base plate is provided with a protective cover that covers the fuel injector and its nozzle, and the protective cover is provided with a notch for the transport assembly to pass through.

7. The one-way valve assembly mechanism according to claim 1, characterized in that, The press-fit assembly includes a support column fixed to a base plate, a press-fit support plate vertically mounted on the support column, a vertical slide rail mounted on the press-fit support plate, a slider mounted on the vertical slide rail, an upper housing fixing block mounted on the slider, a lifting cylinder mounted on the press-fit support plate, the piston end of the lifting cylinder connected to the upper end of the upper housing fixing block, an upper housing cavity mounted below the upper housing fixing block, an upper housing placed inside the upper housing cavity, and bolt holes communicating with the upper housing cavity on the upper housing fixing block, with retaining bolts installed in the bolt holes to position the upper housing within the upper housing cavity.

8. The one-way valve assembly mechanism according to claim 1, characterized in that, The positioning component includes a positioning plate, one end of which is connected to a positioning cylinder via a connecting plate, and the positioning cylinder is fixed to the base plate via a support plate; the front end of the positioning plate has a pressing groove corresponding to the contour of the upper housing.

9. The one-way valve assembly mechanism according to claim 7, characterized in that, Two sets of proximity switches are provided on the outer side of the press-fit support plate. The two sets of proximity switches are used to detect whether the lower housing and the valve plate inside it are installed correctly at the first loading station.

10. The one-way valve assembly mechanism according to claim 1, characterized in that, A sensor is installed inside the valve plate holder, which is used to monitor whether a valve plate is placed on the valve plate holder.