Assembly fixture

Abstract

The application provides an assembly tool, comprising a sleeve, a pushing piece and a calibration mandrel, the sleeve has opposite first and second ends, the hole diameter of the sleeve gradually decreases from the first end to the second end, and the hole diameter of the first end is larger than the outer diameter of the sealing ring; the second end of the sleeve is opposite to the mounting hole; the pushing piece is used for pushing the sealing ring from the first end of the sleeve to the second end of the sleeve, and from the second end of the sleeve to the mounting groove; at least part of the calibration mandrel is used for extending into the sealing ring in the mounting groove, and the outer periphery of the calibration mandrel is provided with a chamfer part used for supporting the sealing ring. The application can reduce or solve the technical problem that the sealing ring is prone to deformation in the installation process, resulting in a decline in sealing performance.

Description

Technical Field

[0001] This application relates to the field of sealing ring assembly technology, and in particular to an assembly tooling. Background Technology

[0002] Sealing rings are key components in industrial equipment and daily life for preventing fluid (liquid or gas) leakage. Specifically, in practical applications, a sealing ring is a component used to fill the gap between two or more mating surfaces, and its core function is to prevent liquid or gaseous media (pressurized oil, water, air, dust, etc.) from leaking from the inside or entering from the outside.

[0003] In related technologies, the installation of sealing rings mainly relies on manual operation or the introduction of tools. During the installation process, the sealing rings are prone to deformation, which leads to a decrease in sealing performance. Utility Model Content

[0004] Based on this, this application provides an assembly tooling that can reduce or solve the technical problem that the sealing ring is prone to deformation during installation, leading to a decrease in sealing performance.

[0005] This application provides an assembly fixture for assembling a sealing ring into a sealing element, the sealing element having a mounting hole, the mounting hole having a mounting groove for accommodating the sealing ring, comprising:

[0006] A sleeve having a first end and a second end opposite to each other, wherein the diameter of the sleeve gradually decreases from the first end to the second end; and the diameter of the first end of the sleeve is larger than the outer diameter of the sealing ring; the second end of the sleeve is opposite to the mounting hole.

[0007] A pusher, the pusher being used to push the sealing ring from a first end of the sleeve to a second end of the sleeve, and from the second end of the sleeve into the mounting groove;

[0008] A calibration mandrel, at least a portion of which is used to extend into the sealing ring within the mounting groove, and the outer periphery of the calibration mandrel is provided with a chamfered portion for opening the sealing ring.

[0009] In one possible implementation, the diameter of the hole at the second end of the sleeve is less than or equal to the inner diameter of the mounting hole.

[0010] In one possible implementation, the second end of the sleeve extends into the mounting hole, and the second end of the sleeve is flush with the side wall of the mounting groove closest to the sleeve.

[0011] In one possible implementation, the propulsion component includes a propulsion section, which is a hollow cylindrical structure.

[0012] In one possible implementation, the propulsion part has at least one groove on one end facing the sleeve, and the extension direction of the groove is consistent with the axial direction of the propulsion part.

[0013] In one possible implementation, the propulsion member further includes a blocking portion connected to one end of the propulsion member away from the sleeve, and the outer diameter of the blocking portion is larger than the aperture of the first end of the sleeve.

[0014] In one possible implementation, the calibration mandrel includes a first mandrel portion and a second mandrel portion connected together, the outer diameter of the first mandrel portion being smaller than the inner diameter of the sealing ring, and a chamfer portion being formed between the first mandrel portion and the second mandrel portion, the chamfer portion being used to open the sealing ring.

[0015] In one possible implementation, the first mandrel portion has a first end and a second end opposite to each other, the first end of the first mandrel portion is connected to the second mandrel portion, and the chamfer portion is formed between the first end of the first mandrel portion and the second mandrel portion;

[0016] From the first end of the first mandrel portion to the second end of the first mandrel portion, the diameter of the hole in the first mandrel portion gradually decreases.

[0017] In one possible implementation, the outer peripheral wall of the chamfered portion is designed with a rounded surface.

[0018] In one possible implementation, the surface of the calibration mandrel is coated with an anti-friction coating, which is a polytetrafluoroethylene coating.

[0019] The assembly fixture provided in this application includes a sleeve, a pusher, and a calibration mandrel. By designing the diameter of the hole at the first end of the sleeve to be larger than the outer diameter of the sealing ring, it ensures that the sealing ring can be inserted into the first end of the sleeve. The pusher can advance the sealing ring from the first end of the sleeve to the second end of the sleeve. By designing the second end of the sleeve to face the mounting hole, it ensures that the pusher can further advance the sealing ring from the second end of the sleeve into the mounting groove within the mounting hole, thereby assembling the sealing ring into the mounting groove. Furthermore, since the sealing ring is prone to deformation during installation into the mounting groove, resulting in a reduction in its diameter, a chamfered portion is provided on the outer periphery of the calibration mandrel to expand the sealing ring. When at least a portion of the calibration mandrel extends into the sealing ring within the mounting groove, it can expand the sealing ring to restore its original size. Therefore, this application can alleviate or solve the technical problem of the sealing ring easily deforming during installation, leading to a decrease in sealing performance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the assembly tooling provided in the embodiments of this application, in which the sleeve and the pusher cooperate to assemble the sealing ring into the mounting groove of the sealing element;

[0022] Figure 2 This is a schematic diagram of the structure of the assembly tooling provided in the embodiments of this application when the calibration mandrel and the sealing ring in the sealing groove are engaged;

[0023] Figure 3 This is a schematic diagram of the structure of the sleeve in the assembly tooling provided in the embodiments of this application;

[0024] Figure 4 A schematic diagram of a propulsion component in an assembly tooling provided in an embodiment of this application;

[0025] Figure 5 Another structural schematic diagram of the propulsion component in the assembly tooling provided in the embodiments of this application;

[0026] Figure 6 This is a schematic diagram of the structure of the calibration mandrel in the assembly tooling provided in the embodiments of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100 - Assembly tooling;

[0029] 110-sleeve;

[0030] 1101 - The first end of the sleeve;

[0031] 1102 - The second end of the sleeve;

[0032] 120 - Propulsion component;

[0033] 121-Propulsion Department;

[0034] 1211 - Groove;

[0035] 122-Blocking part;

[0036] 130 - Calibration mandrel;

[0037] 1301 - Chamfered section;

[0038] 131 - First mandrel section;

[0039] 1311 - First end of the first mandrel section;

[0040] 1312 - The second end of the first mandrel section;

[0041] 132 - Second spindle section;

[0042] 200 - Sealing ring;

[0043] 300 - Seals;

[0044] 310 - Mounting hole;

[0045] 311 - Mounting slot;

[0046] 3111 - First sidewall. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and 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 of this application.

[0050] The terms “first,” “second,” and “third” (if any) 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.

[0051] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0052] A sealing ring is an elastomeric element used to fill the gap between two or more mating surfaces. Its core function is to prevent the leakage of media (liquid or gas) from the inside within a defined range, while preventing the intrusion of external contaminants (such as dust and moisture). Simply put, it is a "gatekeeper" that can create a controlled barrier for various systems and containers.

[0053] A sealing ring is a functional component that fills gaps through its own elastic deformation, thereby blocking fluid passage. It is an indispensable basic component in modern industry, found in everything from small household kettles and faucets to the pressure systems of space shuttles and massive ships. Its performance directly affects the efficiency, reliability, and safety of equipment.

[0054] Key characteristics of sealing rings include the following: First, elasticity and resilience, which are fundamental to their operation. Sealing rings achieve a seal by generating a "rebound force" during installation, maintaining a tight seal against the sealing surface. This elasticity also allows them to automatically compensate for minor wear and dimensional deviations. Second, filling capability; sealing rings can effectively fill microscopic unevenness and gaps at the mating surfaces of parts. Third, media compatibility; sealing rings can withstand the sealing media (such as oil, water, and chemical solvents) for extended periods without swelling, corrosion, softening, or hardening. Fourth, adaptability; sealing rings can maintain their sealing performance within a certain range of temperature and pressure.

[0055] In related technologies, the installation of sealing rings mainly relies on manual operation or the introduction of tools. During the installation process, the sealing rings are prone to deformation, which leads to a decrease in sealing performance.

[0056] Therefore, a new assembly tooling is needed to solve the defect that the sealing ring is prone to deformation during installation, which leads to a decrease in sealing performance.

[0057] After repeated consideration and verification, the inventors of this application have designed a new assembly tooling to address the shortcomings of related technologies.

[0058] The technical solution of the new assembly tooling provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0059] Reference Figure 1 and Figure 2 As shown, this application embodiment provides an assembly fixture 100, which is used to assemble the sealing ring 200 into the sealing element 300. Specifically, see [link to relevant documentation]. Figure 1 and Figure 2 As shown, the seal 300 has a mounting hole 310, and the mounting hole 310 has a mounting groove 311 for accommodating the sealing ring 200.

[0060] Continue to refer to Figure 1 and Figure 2 As shown in the embodiments of this application, the assembly fixture 100 may include: a sleeve 110, a pusher 120, and a calibration mandrel 130, wherein, as Figure 3 As shown, the sleeve 110 has a first end (i.e., the first end 1101 of the sleeve) and a second end (i.e., the second end 1102 of the sleeve), and the diameter of the sleeve 110 gradually decreases from the first end 1101 to the second end 1102. The pusher 120 is used to push the sealing ring 200 from the first end 1101 of the sleeve to the second end 1102 of the sleeve, and to push the sealing ring 200 from the second end 1102 of the sleeve into the mounting groove 311.

[0061] Furthermore, in some embodiments, the aperture of the first end 1101 of the sleeve can be larger than the outer diameter of the sealing ring 200. This ensures that the sealing ring 200 can be placed into the first end 1101 of the sleeve, thereby ensuring that the pusher 120 can push the sealing ring 200 from the first end 1101 of the sleeve to the second end 1102 of the sleeve.

[0062] In this embodiment, the second end 1102 of the sleeve can be opposite to the mounting hole 310. This ensures that the pusher 120 pushes the sealing ring 200 from the second end 1102 of the sleeve into the mounting groove 311 in the mounting hole 310, thereby assembling the sealing ring 200 into the mounting groove 311.

[0063] In this embodiment, at least a portion of the calibration mandrel 130 can be used to extend into the sealing ring 200 within the mounting groove 311. The outer periphery of the calibration mandrel 130 may be provided with a chamfered portion 1301, which is used to open the sealing ring 200 (see...). Figure 6 (As shown).

[0064] Since the sealing ring 200 is prone to deformation during installation into the mounting groove 311, resulting in a reduction in the diameter of the sealing ring 200, a chamfered portion 1301 for expanding the sealing ring 200 is provided on the outer periphery of the calibration mandrel 130. When at least a portion of the calibration mandrel 130 extends into the sealing ring 200 in the mounting groove 311, the sealing ring 200 can be expanded to restore its original size. This reduces or solves the problem of deformation of the sealing ring 200 during installation, thereby avoiding damage to the sealing ring 200 and preventing a decrease in the sealing performance of the sealing ring 200.

[0065] In this embodiment, the aperture of the second end 1102 of the sleeve can be less than or equal to the inner diameter of the mounting hole 310. When the aperture of the second end 1102 of the sleeve is equal to the inner diameter of the mounting hole 310, it can be ensured that the second end 1102 of the sleeve is precisely aligned with the mounting hole 310, thereby ensuring that the sealing ring 200 can directly enter the mounting hole 310 after passing through the sleeve 110, and thus can directly enter the mounting groove 311 in the mounting hole 310.

[0066] When the diameter of the second end 1102 of the sleeve is smaller than the inner diameter of the mounting hole 310, it can ensure that the second end 1102 of the sleeve extends into the mounting hole 310, and can also ensure that the second end 1102 of the sleeve is precisely aligned with the mounting hole 310, thereby ensuring that the sealing ring 200 can directly enter the mounting hole 310 after passing through the sleeve 110, and thus directly enter the mounting groove 311 in the mounting hole 310.

[0067] It should be noted that the diameter of the second end 1102 of the sleeve should be slightly smaller than the inner diameter of the mounting hole 310. If the diameter of the second end 1102 of the sleeve differs too much from the inner diameter of the mounting hole 310, after the second end 1102 of the sleeve extends into the mounting hole 310, the sealing ring 200 may pass through the sleeve 110 and directly enter the mounting hole 310, but cannot enter the mounting groove 311 inside the mounting hole 310.

[0068] In this embodiment, the second end 1102 of the sleeve can extend into the mounting hole 310, and the second end 1102 of the sleeve can be flush with the side wall (i.e., the first side wall 3111) of the mounting groove 311 near the sleeve 110. In this way, the sealing ring 200 can be directly installed into the mounting groove 311 after passing through the sleeve 110, avoiding friction between the sealing ring 200 and other components, thereby preventing deformation of the sealing ring 200 and thus preventing a decrease in the sealing performance of the sealing ring 200.

[0069] In the embodiments of this application, see Figure 4 and Figure 5As shown, the propulsion member 120 may include a propulsion section 121, wherein the propulsion section 121 may be a hollow cylindrical structure. By designing the propulsion section 121 as a hollow cylindrical structure, the frictional resistance between the sealing ring 200 and the propulsion member 120 can be reduced.

[0070] In this embodiment, at least one groove 1211 may be formed on the end of the propulsion part 121 facing the sleeve 110, and the extending direction of the groove 1211 may be consistent with the axial direction of the propulsion member 120. By forming the groove 1211 on the end of the propulsion part 121 facing the sleeve 110, the groove 1211 design can achieve better extensibility during the process of the propulsion part 121 pushing the sealing ring 200 from the first end 1101 of the sleeve to the second end 1102 of the sleeve, which is conducive to pushing the sealing ring 200 through the sleeve 110. In addition, the groove 1211 design can also be used to evenly distribute the force on the sealing ring 200, thereby further preventing the sealing ring 200 from deforming.

[0071] See Figure 4 and Figure 5 As shown in the embodiment of this application, the pusher 120 may further include a blocking portion 122, wherein the blocking portion 122 may be connected to the end of the pusher 121 away from the sleeve 110, and the outer diameter of the blocking portion 122 may be larger than the aperture of the first end 1101 of the sleeve. In this way, during the process of the pusher 120 pushing the sealing ring 200 from the first end 1101 of the sleeve to the second end 1102 of the sleeve, and pushing the sealing ring 200 from the second end 1102 of the sleeve into the mounting groove 311, the blocking portion 122 can play a blocking role, preventing the pusher 120 from entering the sleeve 110 completely.

[0072] Additionally, in the embodiments of this application, see Figure 6 As shown, the calibration mandrel 130 may include a first mandrel portion 131 and a second mandrel portion 132 connected together, wherein a chamfer portion 1301 may be formed between the first mandrel portion 131 and the second mandrel portion 132, and the chamfer portion 1301 is used to open the sealing ring 200.

[0073] Since the sealing ring 200 is prone to deformation during installation into the mounting groove 311, resulting in a reduction in the diameter of the sealing ring 200, a chamfered portion 1301 for expanding the sealing ring 200 is provided between the first mandrel portion 131 and the second mandrel portion 132. When at least a portion of the calibration mandrel 130 extends into the sealing ring 200 in the mounting groove 311, the chamfered portion 1301 can expand the sealing ring 200 to restore it to its original size, thereby reducing or solving the problem of deformation of the sealing ring 200 during installation, thus avoiding damage to the sealing ring 200 and preventing a decrease in the sealing performance of the sealing ring 200.

[0074] In some embodiments, the outer diameter of the first mandrel portion 131 may be smaller than the inner diameter of the sealing ring 200, which facilitates the first mandrel portion 131 extending into the sealing ring 200.

[0075] Furthermore, in this embodiment, the first mandrel portion 131 may have a first end (i.e., the first end 1311 of the first mandrel portion) and a second end (i.e., the second end 1312 of the first mandrel portion). The first end 1311 of the first mandrel portion may be connected to the second mandrel portion 132, and a chamfer portion 1301 is formed between the first end 1311 of the first mandrel portion and the second mandrel portion 132. From the first end 1311 of the first mandrel portion to the second end 1312 of the first mandrel portion, the aperture of the first mandrel portion 131 gradually decreases.

[0076] By designing the aperture of the first mandrel portion 131 to gradually decrease, when the first mandrel portion 131 extends into the sealing ring 200, it can gradually generate a supporting force on the sealing ring 200, avoiding excessive stress on the sealing ring 200 that could damage it.

[0077] In this embodiment, the outer peripheral wall of the chamfered portion 1301 can be designed as a rounded surface. Rounding the edge of the chamfered portion 1301 can prevent the chamfered portion 1301 from rubbing against the sealing ring 200, thus avoiding deformation or damage to the sealing ring 200.

[0078] In this embodiment, the surface of the calibration mandrel 130 may also be coated with an anti-friction coating (not shown in the figure), which can reduce the wear of the calibration mandrel 130 on the sealing ring 200 during the calibration process.

[0079] In one possible implementation, the anti-friction coating can be a polytetrafluoroethylene (PTFE) coating. Alternatively, the anti-friction coating can also be a diamond-like carbon (DLC) coating.

[0080] It should be noted that, in the embodiments of this application, the sealing ring can be made of polytetrafluoroethylene (PTFE). PTFE is a polymer compound formed by the polymerization of tetrafluoroethylene, and it possesses excellent chemical stability, corrosion resistance, sealing performance, high lubricity and non-stickiness, electrical insulation, and good anti-aging resistance.

[0081] Furthermore, it should be noted that in this embodiment, the calibration mandrel 130 is designed to include a first mandrel portion 131 and a second mandrel portion 132. By designing the calibration mandrel 130 with a two-stage structure, the sealing ring 200 can be opened in stages, thus avoiding the technical problem of excessive stress on the sealing ring 200, which could lead to damage to the sealing ring 200.

[0082] In some other embodiments, the calibration mandrel 130 can also be designed with a multi-stage structure, which can further achieve the phased opening of the sealing ring 200, avoiding the technical problem of excessive stress on the sealing ring 200, which could lead to damage to the sealing ring 200.

[0083] The assembly fixture 100 provided in this application may include a sleeve 110, a pusher 120, and a calibration mandrel 130. By designing the bore diameter of the first end 1101 of the sleeve to be larger than the outer diameter of the sealing ring 200, it can be ensured that the sealing ring 200 can be inserted into the first end 1101 of the sleeve. The pusher 120 can push the sealing ring 200 from the first end 1101 of the sleeve to the second end 1102 of the sleeve. By designing the second end 1102 of the sleeve to be opposite to the mounting hole 310, it can be ensured that the pusher 120 pushes the sealing ring 200 from the second end 1102 of the sleeve into the mounting groove 311 in the mounting hole 310, thereby assembling the sealing ring 200 into the mounting groove 311. Furthermore, since the sealing ring 200 is prone to deformation during installation into the mounting groove 311, resulting in a reduction in its diameter, a chamfered portion 1301 for expanding the sealing ring 200 is provided on the outer periphery of the calibration mandrel 130. When at least a portion of the calibration mandrel 130 extends into the sealing ring 200 within the mounting groove 311, the sealing ring 200 can be expanded and restored to its original size. Therefore, this application can alleviate or solve the technical problem of the sealing ring 200 easily deforming during installation, leading to a decrease in sealing performance.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An assembly tooling for assembling a sealing ring into a sealing element, the sealing element having a mounting hole, the mounting hole having a mounting groove for receiving the sealing ring, characterized in that, include: A sleeve having a first end and a second end opposite to each other, wherein the diameter of the sleeve gradually decreases from the first end to the second end; and the diameter of the first end of the sleeve is larger than the outer diameter of the sealing ring; the second end of the sleeve is opposite to the mounting hole. A pusher, the pusher being used to push the sealing ring from a first end of the sleeve to a second end of the sleeve, and from the second end of the sleeve into the mounting groove; A calibration mandrel, at least a portion of which is used to extend into the sealing ring within the mounting groove, and the outer periphery of the calibration mandrel is provided with a chamfered portion for opening the sealing ring.

2. The assembly fixture according to claim 1, characterized in that, The diameter of the hole at the second end of the sleeve is less than or equal to the inner diameter of the mounting hole.

3. The assembly fixture according to claim 1, characterized in that, The second end of the sleeve extends into the mounting hole, and the second end of the sleeve is flush with the side wall of the mounting groove near the sleeve.

4. The assembly fixture according to claim 1, characterized in that, The propulsion component includes a propulsion section, which is a hollow cylindrical structure.

5. The assembly fixture according to claim 4, characterized in that, At least one groove is provided on the end of the propulsion part facing the sleeve, and the extension direction of the groove is consistent with the axial direction of the propulsion part.

6. The assembly fixture according to claim 4, characterized in that, The propulsion component further includes a blocking part, which is connected to the end of the propulsion component away from the sleeve, and the outer diameter of the blocking part is larger than the aperture of the first end of the sleeve.

7. The assembly tooling according to any one of claims 1-6, characterized in that, The calibration mandrel includes a first mandrel portion and a second mandrel portion connected together. The outer diameter of the first mandrel portion is smaller than the inner diameter of the sealing ring, and a chamfer portion is formed between the first mandrel portion and the second mandrel portion. The chamfer portion is used to open the sealing ring.

8. The assembly fixture according to claim 7, characterized in that, The first mandrel portion has a first end and a second end opposite to each other, the first end of the first mandrel portion is connected to the second mandrel portion, and the chamfer portion is formed between the first end of the first mandrel portion and the second mandrel portion; From the first end of the first mandrel portion to the second end of the first mandrel portion, the diameter of the hole in the first mandrel portion gradually decreases.

9. The assembly fixture according to claim 7, characterized in that, The outer peripheral wall of the chamfered portion is designed with a rounded surface.

10. The assembly tooling according to any one of claims 1-6, characterized in that, The surface of the calibration mandrel is coated with an anti-friction coating, which is a polytetrafluoroethylene coating.

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