Slider assembly, mold, four-way valve, and method of machining a slider assembly

Abstract

The application provides a sliding block assembly, a mold, a four-way valve and a method for processing the sliding block assembly, which comprises an inner liner having a containing cavity; a supporting part arranged in the containing cavity, the supporting part having two oppositely arranged end parts, the two end parts being connected with the inner liner respectively, and the supporting part being used for supporting the inner liner; and an injection molding shell wrapped around the outer periphery of the inner liner, the bottom of the injection molding shell having an annular stopper, the annular stopper being located at the bottom of the inner liner and the supporting part, and the annular stopper being capable of stopping the inner liner and the supporting part. Through the technical scheme of the application, the problem that the supporting part is prone to falling off in the prior art can be solved.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and more specifically, to a slider assembly, a mold, a four-way valve, and a method for processing the slider assembly. Background Technology

[0002] The slider assembly in a four-way valve typically includes a liner, a molded housing, and a support. The liner has two opposing positioning grooves at its bottom, and the molded housing is injection-molded onto the outer circumference of the liner. During the manufacturing process, the molded housing is usually first injection-molded onto the outer circumference of the liner, and a support pin guide groove is provided on the surface of the housing. Then, the two ends of the support are pressed into the two support pin guide grooves, and the support is pressed along the guide grooves into the positioning grooves of the liner to support the liner, reduce liner deformation, and ensure the sealing effect of the slider assembly on the four-way valve.

[0003] However, after prolonged use, the slider assembly assembled in the above manner is prone to detaching from the support pin guide groove during use due to the presence of the support pin guide groove, which in turn causes the inner liner to deform and affects the sealing effect of the slider assembly on the four-way valve. Summary of the Invention

[0004] This invention provides a slider assembly, a mold, a four-way valve, and a processing method for the slider assembly, in order to solve the problem of easy detachment of the support part in the prior art.

[0005] According to one aspect of the present invention, a slider assembly is provided, comprising: an inner liner having a receiving cavity; a support portion disposed within the receiving cavity, the support portion having two oppositely disposed ends, the two ends being detachably connected to the inner liner respectively, the support portion being used to support the inner liner; and an injection-molded shell wrapped around the outer periphery of the inner liner, the bottom of the injection-molded shell having an annular retaining edge located at the bottom of the inner liner and the support portion, the annular retaining edge being capable of stopping the inner liner and the support portion.

[0006] By applying the technical solution of this invention, the annular retaining edge stops the support and the inner liner, preventing separation between them and ensuring the support's effectiveness. Specifically, during the assembly of the slider assembly, the support and the inner liner are first connected. Then, the outer circumferential surface of the inner liner is injection molded to form an injection shell, with the annular retaining edge of the injection shell located at the bottom of the support and the inner liner, providing a stop and limiting effect. Compared with conventional solutions, the annular retaining edge in this application ensures the stability of the connection between the support and the inner liner, thereby guaranteeing the support's effectiveness, reducing deformation of the inner liner, and ensuring its sealing effect.

[0007] Furthermore, a positioning structure is provided between the support and the inner liner, allowing for a detachable connection between them. This positioning structure ensures the positional accuracy of the support and the inner liner, improving the smoothness of the injection molding process.

[0008] Furthermore, the positioning structure includes positioning grooves. Two positioning grooves are arranged opposite each other on the bottom of the liner, and each positioning groove corresponds to one of the ends. The ends are located inside the positioning grooves and are positioned and engaged with the positioning grooves. The positioning grooves are simple in structure and facilitate the processing and forming of the liner.

[0009] Furthermore, the end portion transitions or interferes with the positioning groove. This design improves the ease of assembling the liner and support.

[0010] Furthermore, the liner includes a first body and a protrusion. The protrusion is disposed on the outer peripheral surface of the first body, and the inner peripheral surface of the injection-molded shell has a snap-fit ​​groove located above the annular retaining edge. The protrusion is embedded in the snap-fit ​​groove. This arrangement ensures the stability of the connection between the liner and the injection-molded shell.

[0011] Furthermore, the protrusion is arranged in a ring at the bottom of the first body, and the bottom surface of the protrusion is in contact with the upper surface of the ring-shaped retaining edge. This arrangement ensures the ease of injection molding the injection-molded shell.

[0012] Furthermore, the injection-molded shell also has an annular positioning part, which is arranged in a ring on the outer peripheral surface of the annular stop, and the bottom surface of the annular positioning part is flush with the bottom surface of the annular stop. The annular positioning part can improve the structural strength of the slider assembly.

[0013] Furthermore, the top surface of the annular positioning part is higher than the height of the snap-fit ​​groove. This design ensures the structural strength of the bottom of the slider assembly.

[0014] Furthermore, the inner wall of the bottom of the first body is flush with the inner wall of the annular retaining edge. This design ensures ease of assembly and forming of the slider assembly, and also guarantees the smoothness of the inner wall of the slider assembly.

[0015] According to another aspect of the present invention, a mold is provided for processing the slider assembly described above. The mold includes an upper mold and a lower mold that cooperate with each other, the upper mold and the lower mold engaging to form a molding space. The lower mold has an inner liner support portion, the outer surface of which is used to fit against the inner surface of the inner liner of the slider assembly. A mating groove is provided at the top of the inner liner support portion, the mating groove extending to the bottom of the inner liner support portion. The mating groove has a top end and a bottom end opposite to each other, the bottom end being positioned and engaged with the support portion of the slider assembly. The mold also has an injection runner that communicates with the molding space. This configuration improves the ease of injection molding the injection shell.

[0016] Furthermore, the cross-sectional area of ​​the mating groove gradually decreases from the top to the bottom. This design facilitates the placement of the support portion into the mating groove and also makes demolding the slider assembly easier.

[0017] Furthermore, the bottom end of the mating groove is circumferentially and axially matched and limited with the support.

[0018] According to another aspect of the invention, a four-way valve is provided, which includes the slider assembly described above.

[0019] According to another aspect of the present invention, a method for processing a slider assembly is provided. This method is applicable to the slider assembly described above and employs the mold described above. The method for processing the slider assembly includes the following steps:

[0020] Step 1: Assemble the support and inner liner of the slider assembly;

[0021] Step 2: Place the assembled liner and support into the mold for injection molding;

[0022] Step 3: Demold the injection-molded slider assembly.

[0023] By applying the technical solution of this invention, the support and the inner liner can be independently placed within the mating groove and the molding space, and the two ends of the support can be detachably connected to the inner liner. Specifically, a mating groove is provided at the top of the inner liner support, and the mating groove extends to the bottom of the inner liner support, with the molding space of the mold and the mating groove communicating with each other. This arrangement allows a portion of the injection molding material to flow to the bottom of the end of the support and the bottom of the inner liner during injection molding, forming an annular retaining edge. The annular retaining edge connects to the end of the support and to the bottom of the inner liner. Therefore, this solution achieves the assembly of the slider assembly through only one injection molding process, simplifying the process and preventing separation between the support and the inner liner, thus improving the structural stability of the slider assembly. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 A schematic diagram of the slider assembly provided according to Embodiment 1 of the present invention is shown;

[0026] Figure 2 A cross-sectional view of a slider assembly provided according to Embodiment 1 of the present invention is shown;

[0027] Figure 3 It shows Figure 2A schematic diagram of the local structure at point A in the middle;

[0028] Figure 4 A cross-sectional view of the slider assembly provided according to Embodiment 1 of the present invention is shown from another perspective;

[0029] Figure 5 It shows Figure 4 A schematic diagram of the local structure at point B;

[0030] Figure 6 A schematic diagram of the structure of the liner provided according to Embodiment 1 of the present invention is shown;

[0031] Figure 7 A schematic diagram of the support portion provided according to Embodiment 1 of the present invention is shown;

[0032] Figure 8 A schematic diagram of the support portion provided according to Embodiment 2 of the present invention is shown;

[0033] Figure 9 A schematic diagram of the structure of the support provided according to Embodiment 3 of the present invention is shown;

[0034] Figure 10 A cross-sectional view of a mold provided according to Embodiment 4 of the present invention is shown;

[0035] Figure 11 A schematic diagram of the structure of the mold, liner and support provided in Embodiment 4 of the present invention is shown.

[0036] The above figures include the following reference numerals:

[0037] 10. Lining; 101. Positioning groove; 11. First body; 12. Protrusion;

[0038] 20. Support part; 21. First rod; 22. First mating end; 23. Second rod; 24. Second mating end;

[0039] 30. Injection-molded shell; 301. Annular flange; 302. Snap-fit ​​groove; 303. Annular positioning part; 31. Second body;

[0040] 40. Mold; 401. Molding space; 402. Injection runner; 41. Upper mold; 42. Lower mold; 421. Inner liner support; 422. Mating groove. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, 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 invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] like Figures 1 to 7 As shown, Embodiment 1 of the present invention provides a slider assembly, which includes an inner liner 10, a support portion 20, and an injection-molded shell 30. The inner liner 10 has a receiving cavity. The support portion 20 is disposed within the receiving cavity and has two opposing ends, each connected to the inner liner 10, for supporting the inner liner 10. The injection-molded shell 30 surrounds the outer periphery of the inner liner 10, and its bottom has an annular retaining edge 301. The annular retaining edge 301 is located at the bottom of both the inner liner 10 and the support portion 20, and can stop the inner liner 10 and the support portion 20.

[0043] By applying the technical solution of this invention, the annular retaining edge 301 stops the support portion 20 and the inner liner 10, preventing separation between the support portion 20 and the inner liner 10, thereby ensuring the supporting effect of the support portion 20 on the inner liner 10. Specifically, when assembling the slider assembly, the support portion 20 is first connected to the inner liner 10. Then, the outer peripheral surface of the inner liner 10 is injection molded to form an injection shell 30, such that the annular retaining edge 301 of the injection shell 30 is located at the bottom of the support portion 20 and the inner liner 10, and stops and limits the support portion 20 and the inner liner 10. Compared with the conventional technical solution, the setting of the annular retaining edge 301 in this application can ensure the stability of the connection between the support portion 20 and the inner liner 10, thereby ensuring the supporting effect of the support portion 20 on the inner liner 10, reducing the deformation of the inner liner 10, and ensuring the sealing effect of the inner liner 10. The annular retaining edge 301 is injection molded onto the bottom of the liner 10 and the support portion 20, which minimizes the number of steps required to process the slider assembly. Furthermore, in this application, the support portion 20 is detachably connected to the liner 10, ensuring ease of assembly of the support portion 20 and the liner 10.

[0044] Furthermore, a positioning structure is provided between the support part 20 and the inner liner 10, and the support part 20 and the inner liner 10 are detachably connected through the positioning structure. The positioning structure can ensure the positional accuracy between the support part 20 and the inner liner 10, improve the smoothness of the injection molding process, and ensure the stopping effect of the annular flange 301 on the inner liner 10 and the support part 20.

[0045] like Figure 4 and Figure 5 As shown, the positioning structure includes positioning grooves 101. Two positioning grooves 101 are arranged opposite each other on the bottom of the inner liner 10. Each positioning groove 101 corresponds to one of the end pieces, with the end piece located within the positioning groove 101 and positioned in conjunction with it. In this design, the positioning grooves 101 communicate with the receiving cavity. When installing the support part 20, the end piece of the support part 20 is simply inserted into the positioning groove 101. The positioning grooves 101 are simple in structure and facilitate the positioning and connection of the support part 20 and the inner liner 10.

[0046] like Figure 6 and Figure 7 As shown, this solution does not restrict the shape of the positioning groove 101 or the shape of the support part 20. In this embodiment, the positioning groove 101 has a rectangular cross-section, and the support part 20 is a cuboid rod structure. Along the extension direction of the support part 20, the cross-sectional shape of the support part 20 is the same at all locations. The cross-section of the support part 20 is rectangular, and the shape of the end of the support part 20 matches the shape of the positioning groove 101. The above configuration can ensure the stability of the positioning groove 101 in positioning the support part 20 and avoid relative rotation between the support part 20 and the inner liner 10 during injection molding.

[0047] Specifically, the end portion transitions into the positioning groove 101. This design improves the ease of assembling the support portion 20 and the inner liner 10.

[0048] Optionally, the end is interference-fitted with the positioning groove 101.

[0049] like Figures 2 to 5 As shown, the inner liner 10 includes a first body 11 and a protrusion 12. The protrusion 12 is disposed on the outer peripheral surface of the first body 11. The inner peripheral surface of the injection molded shell 30 has a snap-fit ​​groove 302, which is located above the annular retaining edge 301. The protrusion 12 is embedded in the snap-fit ​​groove 302. This arrangement allows the protrusion 12 to engage with the snap-fit ​​groove 302, thereby improving the stability of the connection between the injection molded shell 30 and the inner liner 10. Furthermore, the above arrangement increases the contact area between the inner liner 10 and the injection molded shell 30, further enhancing the stability of the connection between the injection molded shell 30 and the inner liner 10.

[0050] Furthermore, the protrusion 12 is annularly disposed at the bottom of the first body 11, and the bottom surface of the protrusion 12 is in contact with the upper surface of the annular retaining edge 301. In this design, the bottom of the first body 11 is turned outward to form the protrusion 12, the positioning groove 101 is disposed at the bottom of the first body 11, and the bottom surface of the support 20 is flush with the bottom surface of the first body 11. This arrangement ensures that the bottom surface of the protrusion 12, the bottom surface of the end of the support 20, and the bottom surface of the first body 11 are all in contact with the upper surface of the annular retaining edge 301, thereby improving the stopping effect of the annular retaining edge 301 on the inner liner 10 and the support 20, and ensuring the stability of the slider assembly. In addition, the above arrangement can improve the smoothness of the injection molding of the injection-molded shell 30.

[0051] like Figures 2 to 5 As shown, the injection-molded housing 30 also has an annular positioning part 303, which is arranged annularly on the outer peripheral surface of the annular retaining edge 301, and the bottom surface of the annular positioning part 303 is flush with the bottom surface of the annular retaining edge 301. The annular positioning part 303 enables the slider assembly to be positioned and engaged with other components of the four-way valve. Furthermore, the annular positioning part 303 enhances the structural strength of the slider assembly.

[0052] Furthermore, the height of the top surface of the annular positioning part 303 is higher than the height of the snap-fit ​​groove 302. Specifically, the injection-molded shell 30 includes a second body 31, and an annular retaining edge 301 is annularly disposed at the bottom of the second body 31. The inner diameter of the annular retaining edge 301 is smaller than the inner diameter of the second body 31, and the outer wall of the bottom of the second body 31 is flush with the outer wall of the annular retaining edge 301. The bottom end of the annular positioning part 303 is annularly disposed on the outer peripheral surface of the annular retaining edge 301, and the top end of the annular positioning part 303 is annularly disposed on the outer peripheral surface of the second body 31. The snap-fit ​​groove 302 is generally rectangular in structure, and includes a first snap-fit ​​groove, a second snap-fit ​​groove, a third snap-fit ​​groove, and a fourth snap-fit ​​groove connected sequentially. The first snap-fit ​​groove and the third snap-fit ​​groove are arranged opposite each other, and the second snap-fit ​​groove and the fourth snap-fit ​​groove are arranged opposite each other. The length of the first snap-fit ​​groove is greater than the length of the second snap-fit ​​groove. The first snap-fit ​​groove and the third snap-fit ​​groove extend radially into the interior of the annular positioning part 303, and the first snap-fit ​​groove and the third snap-fit ​​groove extend radially into the interior of the second body 31. The above settings can improve the stability of the connection between the inner liner 10 and the injection-molded shell 30 while ensuring the structural strength of the slider assembly.

[0053] Furthermore, the inner wall of the bottom of the first body 11 is flush with the inner wall of the annular retaining edge 301. When injection molding the outer surface of the liner 10, a lower mold and an upper mold are required to cooperate with each other. Specifically, the liner 10 needs to be fastened to the lower mold, and the inner wall of the bottom of the first body 11 is flush with the inner wall of the annular retaining edge 301. This ensures the smoothness of the outer wall of the lower mold, thereby ensuring smooth demolding.

[0054] Embodiment 2 of the present invention provides a slider assembly, which differs from Embodiment 1 in that, as shown in... Figure 8 As shown, the support portion 20 includes a first rod 21 and two first mating ends 22. The first rod 21 is a cuboid rod-shaped structure, and the first mating ends 22 are cuboid block-shaped structures. The two first mating ends 22 are symmetrically arranged at both ends of the first rod 21. The thickness of the first mating end 22 is the same as the thickness of the first rod 21. The first mating end 22 is coaxially arranged with the first rod 21, and the cross-sectional area of ​​the first mating end 22 is smaller than the cross-sectional area of ​​the first rod 21. The first mating end 22 extends into the positioning groove 101 and is positioned and mated with the positioning groove 101.

[0055] Optionally, the positioning groove 101 is a first groove segment and a second groove segment that are radially connected to each other along the inner liner 10, wherein the first groove segment is connected to the receiving cavity, the first mating end 22 is positioned and mated with the second groove segment, and the end of the first rod 21 near the first mating end 22 is positioned and mated with the first groove segment.

[0056] Embodiment 3 of the present invention provides a slider assembly, which differs from Embodiment 1 in that, as shown in the following... Figure 9 As shown, the support portion 20 includes a second rod 23 and two second mating ends 24. The second rod 23 is a cuboid rod-shaped structure, and the two mating ends 24 are cuboid block-shaped structures. The two mating ends 24 are symmetrically arranged at both ends of the second rod 23. The thickness of the second mating end 24 is less than the thickness of the second rod 23, and the top surface of the second mating end 24 is flush with the top surface of the second rod 23. The depth of the positioning groove 101 is the same as the thickness of the second rod 23, and the second mating ends 24 extend into the positioning groove 101 and are positioned and mated with the positioning groove 101. The bottom of the injection-molded shell 30 has a limiting block, which is used to fill the interior of the positioning groove 101 and fit against the bottom surface of the second mating ends 24.

[0057] Embodiment 4 of the present invention provides a mold for processing the slider assembly described above. The mold 40 includes an upper mold 41 and a lower mold 42 that cooperate with each other. The upper mold 41 and the lower mold 42 are fastened together to form a molding space 401. The lower mold 40 has an inner liner support portion 421. The outer surface of the inner liner support portion 421 is used to fit against the inner surface of the inner liner 10 of the slider assembly. A mating groove 422 is provided at the top of the inner liner support portion 421. The mating groove 422 extends to the bottom of the inner liner support portion 421 and has a top end and a bottom end that are disposed opposite to each other. The bottom end is positioned and engaged with the support portion 20 of the slider assembly. The mold 40 also has an injection runner 402 that communicates with the molding space 401. Furthermore, the injection runner 402 is disposed on the upper mold 41. This arrangement ensures that the inner liner 10 and the support portion 20 cooperate with the lower mold, facilitating the injection molding of the injection shell 30.

[0058] Furthermore, the cross-sectional area of ​​the mating groove 422 gradually decreases from the top to the bottom. The mating groove 422 has a first sidewall and a second sidewall disposed opposite to each other, both of which are inclined, and the distance between the first sidewall and the second sidewall gradually decreases from the top to the bottom. This arrangement facilitates the insertion of the support 20 into the mating groove 422 and also facilitates the demolding of the slider assembly.

[0059] Furthermore, the bottom end of the mating groove 422 is circumferentially and axially fitted and limited by the support portion 20. Specifically, the cross-sectional shape of the bottom end of the mating groove 422 is adapted to the cross-sectional shape of the support portion 20, and both are quadrilaterals. This arrangement allows the bottom end of the mating groove 422 to position the support portion 20 circumferentially, preventing the support portion 20 from rotating within the mating groove 422. Moreover, the length of the mating groove 422 is the same as the length of the support portion 20. This arrangement ensures that after the inner liner 10 is placed on the inner liner support portion 421, the two ends of the support portion 20 abut against the inner circumferential surface of the inner liner 10, preventing the support portion 20 from moving along the length direction of the mating groove 422, ensuring the stability of the support portion 20 during injection molding, and guaranteeing the injection molding effect.

[0060] Embodiment 5 of the present invention provides a four-way valve, which includes the slider assembly described above.

[0061] Embodiment 6 of the present invention provides a method for processing a slider assembly. This method is applicable to the slider assembly and mold 40 described above. The method for processing the slider assembly includes the following steps:

[0062] Step 1: Assemble the support part 20 and the inner liner 10 of the slider assembly;

[0063] Step 2: Place the assembled inner liner 10 and support 20 into the mold 40 for injection molding;

[0064] Step 3: Demold the injection-molded slider assembly.

[0065] By applying the technical solution of this invention, the support 20 and the inner liner 10 can be independently placed within the mating groove 422 and the molding space 401, and the two ends of the support 20 can be detachably connected to the inner liner 10 respectively. Specifically, the top of the inner liner support 421 is provided with a mating groove 422, and the mating groove 422 extends to the bottom of the inner liner support 421. The molding space 401 of the mold 40 and the mating groove 422 are interconnected. This arrangement allows a portion of the injection molding material to flow to the bottom of the end of the support 20 and the bottom of the inner liner 10 during injection molding, forming an annular retaining edge 301. The annular retaining edge 301 is connected to the end of the support 20 and the bottom of the inner liner 10. Therefore, this solution can assemble the slider assembly in a single injection molding process, which is simple and prevents separation between the support 20 and the inner liner 10, thus improving the structural stability of the slider assembly.

[0066] 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.

[0067] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0068] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention 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 invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0069] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0070] 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 should not be construed as limiting the scope of protection of this invention.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A slider assembly, characterized in that, include: The inner liner (10) has a receiving cavity; A support portion (20) is disposed within the receiving cavity. The support portion (20) has two oppositely disposed ends, which are respectively connected to the inner liner (10). The support portion (20) is used to support the inner liner (10). The injection-molded shell (30) is wrapped around the outer periphery of the inner liner (10). The bottom of the injection-molded shell (30) has an annular retaining edge (301). The annular retaining edge (301) is located at the bottom of the inner liner (10) and the support part (20). The annular retaining edge (301) can stop the inner liner (10) and the support part (20). A positioning structure is provided between the support part (20) and the inner lining (10), and the support part (20) and the inner lining (10) are detachably connected through the positioning structure; The positioning structure includes a positioning groove (101). Two positioning grooves (101) are arranged opposite each other at the bottom of the inner liner (10). The positioning grooves (101) are arranged one-to-one with the end. The end is located in the positioning groove (101) and the end is positioned and engaged with the positioning groove (101). The end is confined between the liner (10) and the annular flange (301); The annular retaining edge (301) blocks the opening of the positioning groove (101) toward the bottom of the liner (10).

2. The slider assembly according to claim 1, characterized in that, The end portion is either transition-fitted or interference-fitted with the positioning groove (101).

3. The slider assembly according to claim 1, characterized in that, The inner liner (10) includes a first body (11) and a protrusion (12). The protrusion (12) is disposed on the outer peripheral surface of the first body (11). The inner peripheral surface of the injection molded shell (30) has a snap-fit ​​groove (302). The snap-fit ​​groove (302) is located above the annular retaining edge (301). The protrusion (12) is embedded in the snap-fit ​​groove (302).

4. The slider assembly according to claim 3, characterized in that, The protrusion (12) is arranged in a ring at the bottom of the first body (11), and the bottom surface of the protrusion (12) is in contact with the upper surface of the ring-shaped retaining edge (301).

5. A mold, characterized in that, The mold (40) is used to process the slider assembly according to any one of claims 1 to 4. The mold (40) includes an upper mold (41) and a lower mold (42) that cooperate with each other. The upper mold (41) and the lower mold (42) are engaged to form a molding space (401). The lower mold (42) has an inner lining support (421). The outer surface of the inner lining support (421) is used to fit against the inner surface of the inner lining (10) of the slider assembly. The top of the inner lining support (421) is provided with a mating groove (422). The mating groove (422) extends to the bottom of the inner lining support (421). The mating groove (422) has a top end and a bottom end that are disposed opposite to each other. The bottom end is positioned and engaged with the support part (20) of the slider assembly. The mold (40) also has an injection runner (402) that communicates with the molding space (401).

6. The mold according to claim 5, characterized in that, The cross-sectional area of ​​the mating groove (422) gradually decreases along the direction from the top end to the bottom end.

7. The mold according to claim 6, characterized in that, The bottom end of the mating groove (422) is circumferentially and axially matched and limited with the support part (20).

8. A four-way valve, characterized in that, The four-way valve includes the slider assembly as described in any one of claims 1 to 4.

9. A method for processing a slider assembly, characterized in that, The processing method is applicable to the slider assembly according to any one of claims 1 to 4, and uses the mold according to any one of claims 5 to 7. The processing method of the slider assembly includes the following steps: Step 1: Assemble the support (20) and liner (10) of the slider assembly; Step 2: Place the assembled inner liner (10) and the support (20) into the mold (40) for injection molding; Step 3: Demold the injection-molded slider assembly.

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