A method and system for pressing a sealing ring

Abstract

This invention relates to the field of tooling technology, and specifically to a method and system for pressing together sealing rings. The sealing ring pressing method includes: installing a first sealing ring on a first assembly position of an upper pressing assembly; the first assembly position includes an inner or outer peripheral wall of the upper pressing assembly engaging the first sealing ring; installing a second sealing ring on a second assembly position of a lower pressing assembly; based on the first and second assembly positions, installing a bearing assembly on the lower pressing assembly and driving the upper pressing assembly to move along a pressing direction; pressing the first sealing ring along the pressing direction to a first gap between the outer and inner ring units of the bearing assembly, the upper pressing assembly having a first state; based on the first state of the upper pressing assembly, pressing the second sealing ring along the pressing direction to a second gap between the outer and inner ring units, the upper pressing assembly having a second state. This addresses the problem of how to achieve precise positioning and pressing of two sealing rings in the same state of a bearing assembly.

Description

Technical Field

[0001] This invention relates to the field of tooling technology, and more specifically, to a method and system for pressing sealing rings. Background Technology

[0002] During bearing assembly, sealing rings are typically installed in the annular gaps at both ends to prevent external impurities from entering the rolling area and to ensure grease retention. In existing technology, the pressing operation of sealing rings at different positions at both ends of the bearing often employs a step-by-step process: first, one set of pressing fixtures is used to press one sealing ring into the gap at one end of the bearing; then the bearing is flipped or repositioned, and another set of fixtures is used to press the other sealing ring into the gap at the other end. This step-by-step pressing method not only leads to cumbersome procedures and low assembly efficiency, but also makes it easy for the bearing to shift position between the two clamping operations. This makes it difficult to ensure the coaxiality of the two sealing rings relative to the bearing axis, resulting in seal damage or incomplete pressing, which in turn affects the sealing effect and the bearing's service life.

[0003] Related technologies typically employ a simultaneous upper and lower pressing method to install two sealing rings in a single clamping operation. However, due to the difficulty in controlling the alignment accuracy between the upper and lower pressing components and the bearing, simultaneous pressing can easily lead to misalignment between the center of the sealing ring and the corresponding gap, resulting in misaligned pressing or unilateral deformation of the sealing ring. Therefore, achieving precise positioning and pressing of the two sealing rings under the same bearing conditions has become a pressing technical problem in this field. Summary of the Invention

[0004] To address the challenge of achieving precise positioning and pressing of dual sealing rings in the same bearing assembly state, this invention provides a sealing ring pressing method and system.

[0005] In a first aspect, the present invention provides a method for pressing a sealing ring, comprising:

[0006] The first sealing ring is installed in the first assembly position of the upper pressing assembly; the first assembly position includes the inner or outer peripheral wall of the upper pressing assembly engaging the first sealing ring.

[0007] The second sealing ring is installed in the second assembly position of the lower pressing assembly; wherein, the second assembly position includes the inner peripheral wall of the lower pressing assembly that engages with the second sealing ring;

[0008] Based on the first and second assembly positions, the bearing assembly is installed on the lower pressing assembly and the upper pressing assembly is driven to move along the pressing direction; wherein, the upper pressing assembly and the lower pressing assembly have the same central axis; the bearing assembly includes an outer ring unit, an inner ring unit and a rolling unit, the outer ring unit is sleeved on the outer peripheral wall of the inner ring unit, the rolling unit is located between the outer ring unit and the inner ring unit, there is a first gap between the same end face of the outer ring unit and the inner ring unit along the radial direction, and there is a second gap between the other end face of the outer ring unit and the inner ring unit along the radial direction;

[0009] The first sealing ring is pressed along the pressing direction to the first gap between the outer ring unit and the inner ring unit of the bearing assembly, and the upper pressing assembly has a first state;

[0010] Based on the first state of the upper pressing assembly, the second sealing ring is pressed into the second gap between the outer ring unit and the inner ring unit along the pressing direction, and the upper pressing assembly has a second state.

[0011] Optionally, the first assembly position further includes:

[0012] The end face of the first sealing ring abuts against at least a portion of the upper pressing portion facing the lower pressing assembly, and the outer peripheral wall of the first sealing ring abuts against the inner peripheral wall of the upper pressing portion; wherein, the upper pressing assembly includes an upper pressing portion and an upper pressing portion, and the upper pressing portion is sleeved on the outer peripheral side of the upper pressing portion.

[0013] Optionally, the second assembly position further includes:

[0014] The end face of the second sealing ring abuts against at least a portion of the lower pressing portion, and the inner peripheral wall of the second sealing ring abuts against the outer peripheral wall of the lower limiting portion; wherein, the lower pressing assembly includes a lower limiting portion and a lower pressing portion, and the lower pressing portion is sleeved on the outer peripheral side of the lower limiting portion.

[0015] Optionally, pressing the first sealing ring into the first gap between the outer ring unit and the inner ring unit of the bearing assembly, the upper pressing assembly having a first state includes:

[0016] Based on the movement of the upper pressing component along the pressing direction, at least part of the inner peripheral wall of the upper positioning part abuts against the outer peripheral wall of the outer ring unit.

[0017] Based on the continuous movement of the upper pressing component along the pressing direction, the first sealing ring is pressed into the first gap, the upper pressing part abuts against the end face of the inner ring unit, and the end face of the upper pressing part facing the lower pressing component is flush with the end face of the upper pressing part facing the lower pressing component; wherein, an upper elastic part is provided between the upper pressing part and the upper pressing part.

[0018] Optionally, based on the upper pressing assembly having a first state, pressing the second sealing ring to the second gap between the outer ring unit and the inner ring unit, the upper pressing assembly having a second state includes:

[0019] Based on the continuous movement of the upper pressing component along the pressing direction, the end face of the inner ring unit abuts against at least part of the lower limit portion and pushes the lower limit portion to move along the pressing direction.

[0020] The second sealing ring is pressed into the second gap between the outer ring unit and the inner ring unit, and the end face of the lower limiting part facing the upper pressing component is flush with the end face of the lower pressing part facing the upper pressing component; wherein, a lower elastic part is provided between the lower limiting part and the lower pressing part.

[0021] Optionally, it also includes:

[0022] Based on the pressing stop command, the upper pressing component is driven to move away from the lower pressing component;

[0023] The upper limit position is reset to a point where the end face of the upper limit position near the lower pressing assembly and the end face of the upper pressing assembly near the lower pressing assembly have a first height difference; the first height difference includes: the distance between the end face of the upper limit position near the lower pressing assembly and the end face of the bearing assembly is less than the distance between the end face of the upper pressing assembly near the lower pressing assembly and the end face of the bearing assembly.

[0024] The lower limit portion is reset to a point where the end face of the lower limit portion near the upper pressing assembly and the end face of the lower pressing portion near the upper pressing assembly have a second height difference; the second height difference includes: the distance between the end face of the lower limit portion near the upper pressing assembly and the end face of the bearing assembly is less than the distance between the end face of the lower pressing portion near the upper pressing assembly and the end face of the bearing assembly.

[0025] Optionally, the first assembly position further includes:

[0026] The end face of the first sealing ring abuts against at least a portion of the upper pressing portion facing the lower pressing assembly, and the inner peripheral wall of the first sealing ring abuts against the outer peripheral wall of the upper pressing portion; wherein, the upper pressing assembly includes an upper pressing portion and an upper pressing portion, and the upper pressing portion is sleeved on the outer peripheral side of the upper pressing portion.

[0027] In a second aspect, the present invention provides a sealing ring pressing system, including any optional sealing ring pressing method of the first aspect, wherein the sealing ring pressing system includes:

[0028] Upper pressing assembly;

[0029] The lower pressing assembly is arranged opposite to the upper pressing assembly along the pressing direction; the upper pressing assembly and the lower pressing assembly have the same central axis.

[0030] A bearing assembly includes an outer ring unit, an inner ring unit, a rolling element, a first sealing ring, and a second sealing ring. The outer ring unit is fitted onto the outer peripheral wall of the inner ring unit. The rolling element is located between the outer ring unit and the inner ring unit. A first gap exists between the same end faces of the outer ring unit and the inner ring unit along the radial direction, and a second gap exists between the other end faces of the outer ring unit and the inner ring unit along the radial direction. The sealing ring pressing system includes a pressing state. In the pressing state, the first sealing ring is installed on a first assembly position of the upper pressing assembly. The first assembly position includes the upper pressing assembly engaging the inner or outer peripheral wall of the first sealing ring. The second sealing ring is installed at the second assembly position of the lower pressing assembly; the second assembly position includes the inner peripheral wall of the lower pressing assembly engaging the second sealing ring; based on the first assembly position and the second assembly position, the bearing assembly is installed on the lower pressing assembly and the upper pressing assembly is driven to move along the pressing direction; the first sealing ring is pressed along the pressing direction to the first gap between the outer ring unit and the inner ring unit of the bearing assembly, and the upper pressing assembly has a first state; based on the upper pressing assembly having the first state; the second sealing ring is pressed along the pressing direction to the second gap between the outer ring unit and the inner ring unit, and the upper pressing assembly has a second state.

[0031] Optionally, the upper pressing assembly includes an upper limit part, an upper pressing part, and an upper elastic part. The upper limit part is sleeved on the outer periphery of the upper pressing part, and the upper elastic part is disposed between the upper limit part and the upper pressing part.

[0032] Optionally, the lower pressing assembly includes a lower limiting part, a lower pressing part, and a lower elastic part. The lower pressing part is sleeved on the outer periphery of the lower limiting part, and the lower elastic part is disposed between the lower limiting part and the lower pressing part.

[0033] To address the challenge of achieving precise positioning and pressing of dual sealing rings in the same bearing assembly state, this invention offers the following advantages: The first sealing ring is positioned by engaging its inner or outer circumferential wall with a pressing component above the first assembly position, while the second sealing ring is positioned by engaging its inner circumferential wall with a pressing component below the second assembly position. Both utilize different positioning references. Therefore, by installing the bearing assembly onto the lower pressing component and driving the upper pressing component to move along the pressing direction, the following steps can be completed in a single continuous stroke: First, the upper pressing component in the first state presses the first sealing ring into the first gap between the outer and inner ring units. Then, based on this first state, the upper pressing component switches to the second state, pressing the second sealing ring into the second gap between the outer and inner ring units. This eliminates the need to adjust the bearing assembly's state, thereby improving pressing efficiency. By setting different positioning references for the first and second sealing rings, it is possible to adapt to the different spatial constraints of the first and second gaps at both ends of the bearing assembly, and to avoid the center of the first and second sealing rings and the corresponding gaps being offset due to the uniformity of the references, which would cause misalignment during pressing or deformation of the sealing rings on one side. This allows for precise sequential pressing of the two sealing rings in a single clamping operation, improving pressing accuracy and efficiency. Attached Figure Description

[0034] Figure 1 A schematic flowchart of a sealing ring pressing method according to one embodiment is shown;

[0035] Figure 2 A schematic diagram of a sealing ring pressing system according to one embodiment is shown;

[0036] Figure 3 Another structural schematic diagram of a sealing ring pressing system according to one embodiment is shown;

[0037] Figure 4 A cross-sectional view of a bearing assembly is shown, illustrating an embodiment of a sealing ring pressing method.

[0038] Figure 5 A cross-sectional view of a portion of a bearing assembly is shown in an embodiment of a sealing ring pressing method.

[0039] Figure label:

[0040] 10. Base assembly; 11. Base body; 12. Drive unit; 20. Upper pressing assembly; 21. Upper pressing part; 22. Upper limit part; 30. Lower pressing assembly; 31. Lower pressing part; 32. Lower limit part; 40. Bearing assembly; 41. Outer ring unit; 411. Outer ring body; 412. First outer raceway; 413. Second outer raceway; 42. Inner ring unit; 421. First inner ring; 422. First inner raceway; 423. Second inner ring; 424. Second inner raceway; 43. Rolling unit; 431. First rolling element; 432. Second rolling element; 44. Sealing unit; 441. First sealing ring; 442. Second sealing ring. Detailed Implementation

[0041] The invention will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are described merely to enable those skilled in the art to better understand and thus implement the invention, and are not intended to imply any limitation on the scope of the invention.

[0042] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily used to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements, or components to having a particular orientation or to be constructed and operated in a particular orientation.

[0043] Furthermore, some of the aforementioned terms, besides indicating orientation or positional relationships, may also have other meanings. For example, the term "above" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances. In addition, the terms "installed," "set," "equipped with," "connected," and "linked" should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral structure; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the aforementioned terms in this invention based on the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0044] In the assembly process of bearings (combined bearings including outer rings, inner rings, and rolling elements), it is usually necessary to install sealing rings in the annular gaps at both ends. Existing technologies often employ a step-by-step pressing method: first, one set of tooling is used to press one sealing ring into the gap at one end of the bearing; then the bearing is flipped or repositioned, and another set of tooling is used to press the other sealing ring into the gap at the other end. This method is not only cumbersome and inefficient, but also prone to positional misalignment between the two clamping operations, making it difficult to guarantee the coaxiality of the two sealing rings with the bearing axis. Existing technologies use simultaneous pressing from top to bottom, but this still results in the sealing rings shifting from the center of the corresponding gap during the pressing process, leading to defects such as tilting, jamming, or incomplete pressing. Therefore, the present invention further illustrates a method for solving the above problems through the following embodiments.

[0045] Example 1

[0046] Please refer to Figure 1 This embodiment provides a sealing ring pressing method, including the following steps S10-S50:

[0047] Step S10: Install the first sealing ring 441 on the first assembly position of the upper pressing assembly 20; the first assembly position includes the inner or outer peripheral wall of the upper pressing assembly 20 engaging the first sealing ring 441.

[0048] Step S20: Install the second sealing ring 442 on the second assembly position of the lower pressing assembly 30; wherein, the second assembly position includes the inner peripheral wall of the lower pressing assembly 30 engaging the second sealing ring 442.

[0049] Step S30: Based on the first assembly position and the second assembly position, the bearing assembly 40 is installed on the lower pressing assembly 30 and the upper pressing assembly 20 is driven to move along the pressing direction; wherein, the upper pressing assembly 20 and the lower pressing assembly 30 have the same central axis; the bearing assembly 40 includes an outer ring unit 41, an inner ring unit 42 and a rolling unit 43, the outer ring unit 41 is sleeved on the outer peripheral wall of the inner ring unit 42, the rolling unit 43 is located between the outer ring unit 41 and the inner ring unit 42, there is a first gap between the same end face of the outer ring unit 41 and the inner ring unit 42 in the radial direction, and there is a second gap between the other end face of the outer ring unit 41 and the inner ring unit 42 in the radial direction;

[0050] In step S40, the first sealing ring 441 is pressed along the pressing direction to the first gap between the outer ring unit 41 and the inner ring unit 42 of the bearing assembly 40, and the upper pressing assembly 20 has a first state.

[0051] In step S50, based on the upper pressing assembly 20 having a first state, the second sealing ring 442 is pressed along the pressing direction to the second gap between the outer ring unit 41 and the inner ring unit 42, and the upper pressing assembly 20 has a second state.

[0052] In step S10, the first sealing ring 441 is pre-fixed to the upper pressing assembly 20 through the first assembly position. The side of the upper pressing assembly 20 that fixes the first sealing ring 441 faces the lower pressing assembly 30. The fixing method is, for example, to provide multiple elastic fixing parts on the periphery of the upper limit part 22, and press the first sealing ring 441 to the upper pressing part 21, so that the inner or outer peripheral wall of the first sealing ring 441 abuts against the multiple elastic fixing parts to achieve fixing. The specific fixing method includes elastic fixing parts but is not limited to this, depending on the actual application.

[0053] Specifically, two engagement methods are implemented based on the first assembly position: the upper pressing component 20 engages with the inner peripheral wall of the first sealing ring 441, or the upper pressing component 20 engages with the outer peripheral wall of the first sealing ring 441. When the upper pressing component 20 engages with the inner peripheral wall of the first sealing ring 441, the outer peripheral wall of the upper limit part 22 forms an elastic abutment with the inner peripheral surface of the first sealing ring 441, and radial centering is achieved based on the position of the inner peripheral wall to ensure the accuracy of subsequent pressing. When the upper pressing component 20 engages with the outer peripheral wall of the first sealing ring 441, the inner peripheral wall of the upper limit part 22 abuts with the outer peripheral wall of the first sealing ring 441, and radial centering is also achieved based on the position of the outer peripheral wall of the first sealing ring 441, so that the first sealing ring 441 is already in a position coaxial with the first gap of the bearing assembly 40 before the pressing begins, avoiding the first sealing ring 441 from tilting or shifting position during the pressing movement.

[0054] In one example of this embodiment, please refer to Figure 2 The upper pressing assembly 20 includes an upper limit position part 22 and an upper pressing part 21. The radial cross-section of the upper limit position part 22 and the upper pressing part 21 is, for example, a cylinder. The upper limit position part 22 is sleeved on the outer peripheral side of the upper pressing part 21. Based on this structure, the purpose of using the outer peripheral wall of the first sealing ring 441 as a positioning reference is achieved.

[0055] Specifically, the first assembly position further includes: the end face of the first sealing ring 441 abuts against at least a portion of the upper pressing part 21 on the side facing the lower pressing assembly 30, and the outer peripheral wall of the first sealing ring 441 abuts against the inner peripheral wall of the upper pressing part 22; wherein, the upper pressing assembly 20 includes the upper pressing part 22 and the upper pressing part 21, and the upper pressing part 22 is sleeved on the outer peripheral side of the upper pressing part 21.

[0056] Understandably, the upper limit positioning part 22 is fitted onto the outer periphery of the upper pressing part 21, forming, for example, an annular receiving space with a stepped axial cross-section, within which the first sealing ring 441 is located. Specifically, at least a portion of the upper pressing part 21 abuts against the end face of the first sealing ring 441 to achieve axial positioning; another portion of the upper pressing part 21 can abut against the inner ring unit 42 during subsequent pressing, providing structural support for the guidance and positioning of the upper limit positioning part 22. Simultaneously, the outer peripheral wall of the first sealing ring 441 abuts against the inner peripheral wall of the upper limit positioning part 22, using this as a radial positioning reference to ensure that the first sealing ring 441 can be accurately pressed in during subsequent pressing.

[0057] Furthermore, the outer peripheral wall of the first sealing ring 441 is fixed by the elastic fixing part, so that the end face of the first sealing ring 441 can abut against the upper pressing part 21. The combination of the two allows the first sealing ring 441 to obtain axial end face positioning and radial outer peripheral positioning at the same time, preventing the first sealing ring 441 from radially moving or tilting during the pressing process, avoiding the sealing ring from falling off when the upper pressing assembly 20 moves, and ensuring that the first sealing ring 441 enters the first gap in an attitude perpendicular to the axis, thereby improving the assembly success rate.

[0058] In another example of this embodiment, the upper pressing assembly 20 includes an upper limit part 22 and an upper pressing part 21. The upper pressing part 21 is sleeved on the outer peripheral side of the upper limit part 22. Based on this structure, the inner peripheral wall of the first sealing ring 441 is used as the positioning reference.

[0059] Based on this example, the first assembly position further includes: the end face of the first sealing ring 441 abuts against the side of the upper pressing part 21 facing the lower pressing assembly 30 and the inner peripheral wall of the first sealing ring 441 abuts against the outer peripheral wall of the upper pressing part 22; wherein, the upper pressing assembly 20 includes the upper pressing part 22 and the upper pressing part 21, and the upper pressing part 21 is sleeved on the outer peripheral side of the upper pressing part 22.

[0060] Understandably, the first sealing ring 441 is fitted onto the outer peripheral wall of the upper limit position part 22 with the inner peripheral wall as the reference, which plays a role in radial support and centering. The upper pressing part 21 is located on the outer side, so that the upper pressing part 21 pushes the first sealing ring 441 during pressing, while the upper limit position part 22 maintains the alignment relationship with the inner ring unit 42 or the outer ring unit 41.

[0061] In step S20, the second assembly position further includes: the end face of the second sealing ring 442 abuts against at least a portion of the lower pressing part 31 and the inner peripheral wall of the second sealing ring 442 abuts against the outer peripheral wall of the lower limiting part 32; wherein, the lower pressing assembly 30 includes the lower limiting part 32 and the lower pressing part 31, and the lower pressing part 31 is sleeved on the outer peripheral side of the lower limiting part 32.

[0062] Specifically, in the second assembly position, the inner ring unit 42 is fitted onto the outer peripheral wall of the lower limiting part 32, achieving coaxial positioning of the bearing assembly 40 and the lower pressing assembly 30. In step S20, the second sealing ring 442 is fixed to the lower pressing assembly 30 using the inner peripheral wall of the second sealing ring 442 as the positioning reference, forming radial centering; at the same time, the end face of the second sealing ring 442 abuts against the end face of the lower pressing part 31, forming axial limiting, eliminating the need to flip the bearing assembly 40, thus avoiding the reference error caused by flipping the bearing in related technologies and the cumbersome pressing process.

[0063] That's understandable, please refer to it. Figure 4 and Figure 5In step S30, the outer ring unit 41 includes an outer ring body 411, a first outer raceway 412, and a second outer raceway 413; the first outer raceway 412 and the second outer raceway 413 are sequentially arranged along the axial direction on the inner peripheral wall of the outer ring body 411; the inner ring unit 42 includes a first inner ring 421, a second inner ring 423, a first inner raceway 422, and a second inner raceway 424; the first inner ring 421 and the second inner ring 423 are sequentially arranged along the axial direction, the first inner raceway 422 is located on the outer peripheral wall of the first inner ring 421; the second inner raceway 424 is located on the outer peripheral wall of the second inner ring 423; there is a gap between the outer ring body 411 and the first inner ring 421 and the second inner ring 423; the rolling unit 43 includes a first rolling element 431 and a second rolling element 432; the first outer raceway 412 and the first inner raceway 422 form a gap for the first rolling element 431 to roll; the second outer raceway 413 and the second inner raceway 424 form a gap for the second rolling element 432 to roll. Specifically, the first gap is located between the first outer raceway 412 and the first inner raceway 422, which do not interfere with the movement of the first rolling element 431; the second gap is located between the second outer raceway 413 and the second inner raceway 424, which do not interfere with the movement of the second rolling element 432, subject to actual application.

[0064] Understandably, both types of sealing rings in the relevant technologies are pressed together using the outer circumferential wall of the sealing ring for positioning. However, in the actual pressing process, as force is gradually applied to the bearing, both the outer and inner rings bear significant axial pressure. Especially after the upper sealing ring is pressed into place, when force continues to be applied, the outer ring is prone to radial deformation due to the different force-bearing area and support method. This causes the positioning reference to shift, making it impossible to maintain concentricity with the lower sealing ring, resulting in defects such as sealing ring misalignment, unilateral compression, or even incomplete pressing.

[0065] In this embodiment, the second assembly position is defined as the lower pressing component 30 engaging the inner peripheral wall of the second sealing ring 442. By using the inner peripheral wall as a positioning reference, the radial position of the second sealing ring 442 is determined by the reference of the lower pressing component 30 corresponding to the inner ring unit 42 (the outer peripheral wall of the lower limiting part 32). Even if the outer ring unit 41 deforms during the pressing process, it will not interfere with the coaxial relationship between the second sealing ring 442 and the inner ring unit 42. This avoids the positioning deviation caused by the deformation of the outer ring unit 41 in related technologies, ensuring that the second sealing ring 442 always remains precisely concentric when pressed into the second gap, reducing the pressing error rate, and improving the consistency of the assembly of the first sealing ring 441 and the second sealing ring 442. Furthermore, compared to the problem of coaxiality error that may be introduced by flipping or double-clamping the bearing in related technologies, this embodiment eliminates this error risk through single clamping and coaxial arrangement.

[0066] Further, please refer to Figure 3In step S40, pressing the first sealing ring 441 into the first gap between the outer ring unit 41 and the inner ring unit 42 of the bearing assembly 40, the upper pressing assembly 20 has a first state including steps S41-S42:

[0067] In step S41, based on the movement of the upper pressing assembly 20 along the pressing direction, at least part of the inner peripheral wall of the upper limit part 22 abuts against the outer peripheral wall of the outer ring unit 41 to achieve radial guidance.

[0068] In step S42, based on the continuous movement of the upper pressing assembly 20 along the pressing direction, the first sealing ring 441 is pressed into the first gap, the upper pressing part 21 abuts against the end face of the inner ring unit 42, and the end face of the upper limit part 22 facing the lower pressing assembly 30 is flush with the end face of the upper pressing part 21 facing the lower pressing assembly 30; wherein, an upper elastic part is provided between the upper limit part 22 and the upper pressing part 21.

[0069] Understandably, the upper limit position 22 abuts against the end face of the outer ring unit 41 on the side facing the lower pressing assembly 30. Simultaneously, the compression of the upper elastic portion causes the upper limit position 22 to be flush with the end face of the upper pressing portion 21, ensuring uniform pressing force and consistent depth when the first sealing ring 441 is pressed into the first gap. As the upper pressing portion 21 continues to descend, the upper limit position 22 is blocked by the outer ring unit 41 and stops. The upper pressing portion 21 continues to compress the upper elastic portion and push the first sealing ring 441 into the first gap until the end face of the upper limit position 22 is flush with the end face of the upper pressing portion 21. The upper pressing assembly 20 is in the first state, completing the precise pressing of the first sealing ring 441.

[0070] For example, the upper elastic part can be a plurality of helical springs evenly arranged, or it can be a gas spring or a hydraulic damper. The other end abuts against the upper limit part 22 to control the pressing speed. The specific design position and structure are subject to actual application and are not specifically limited in this invention.

[0071] Further, in step S50, based on the upper pressing assembly 20 having a first state, the second sealing ring 442 is pressed into the second gap between the outer ring unit 41 and the inner ring unit 42, and the upper pressing assembly 20 having a second state includes steps S51-S52:

[0072] In step S51, based on the continuous movement of the upper pressing component 20 along the pressing direction, the end face of the inner ring unit 42 abuts against at least a portion of the lower limiting portion 32 and pushes the lower limiting portion 32 to move along the pressing direction.

[0073] In step S52, the second sealing ring 442 is pressed into the second gap between the outer ring unit 41 and the inner ring unit 42, and the end face of the lower limiting part 32 facing the upper pressing component 20 is flush with the end face of the lower pressing part 31 facing the upper pressing component 20; wherein, a lower elastic part is provided between the lower limiting part 32 and the lower pressing part 31.

[0074] Understandably, after the first state is completed, the upper pressing assembly 20 continues to press against the bearing assembly 40 downwards, the lower elastic part is compressed, the end face of the inner ring unit 42 contacts the lower limiting part 32 and pushes it downwards, thereby pushing the second sealing ring 442 placed on the lower pressing part 31 into the second gap. When the end face of the lower limiting part 32 is flush with the end face of the lower pressing part 31, the pressing is completed.

[0075] Furthermore, a sealing ring pressing method further includes steps S53-S55:

[0076] In step S53, based on the pressing stop command, the upper pressing assembly 20 is driven to move away from the lower pressing assembly 30, making room for removing the bearing assembly 40 or proceeding to the next pressing cycle. By actively driving the reverse movement, accidental collisions or friction between the upper pressing assembly 20 and the bearing assembly 40 due to elastic restoring force are avoided.

[0077] Step S54, the upper limit position 22 is reset to a position where the end face of the upper limit position 22 near the lower pressing assembly 30 and the end face of the upper pressing part 21 near the lower pressing assembly 30 have a first height difference; the first height difference includes: the distance between the end face of the upper limit position 22 near the lower pressing assembly 30 and the end face of the bearing assembly 40 is less than the distance between the end face of the upper pressing part 21 near the lower pressing assembly 30 and the end face of the bearing assembly 40;

[0078] In step S55, the lower limit portion 32 is reset to a position where the end face of the lower limit portion 32 near the upper pressing assembly 20 and the end face of the lower pressing portion 31 near the upper pressing assembly 20 have a second height difference; the second height difference includes: the distance between the end face of the lower limit portion 32 near the upper pressing assembly 20 and the end face of the bearing assembly 40 is less than the distance between the end face of the lower pressing portion 31 near the upper pressing assembly 20 and the end face of the bearing assembly 40.

[0079] In step S54, when the upper pressing assembly 20 moves upward, the compressed upper elastic part gradually returns to its original length, pushing the upper limit part 22 relative to the upper pressing part 21 towards the lower pressing assembly 30, until a stable first height difference is formed between the end face of the upper limit part 22 and the end face of the upper pressing part 21, thus achieving reset and preparing for the next pressing cycle. That is, at the start of the next pressing, the end face of the upper limit part 22 will first contact the outer ring unit 41 of the bearing assembly 40, playing a radial guiding role, and preventing the upper pressing part 21 from prematurely touching the bearing assembly 40 and causing interference.

[0080] In step S55, the compressed lower elastic part returns to its original length during the reset of the upper pressing assembly 20 or after the bearing assembly 40 is removed. The lower limit part 32 moves towards the upper pressing assembly 20 relative to the lower pressing part 31, forming a second height difference. This provides the conditions for installing the second sealing ring 442 and the bearing assembly 40 in the next pressing cycle. That is, when the bearing assembly 40 is placed on the lower pressing assembly 30 next time, the end face of the inner ring unit 42 of the bearing assembly 40 will first contact the end face of the lower limit part 32 to achieve accurate positioning, instead of directly pressing on the second sealing ring 442 on the lower pressing part 31, thus avoiding premature damage or displacement of the sealing ring.

[0081] Example 2

[0082] This embodiment provides a sealing ring pressing system, applicable to any of the sealing ring pressing methods described in Embodiment 1. Please refer to [the documentation / reference]. Figure 2 and Figure 3 The sealing ring pressing system includes:

[0083] Upper pressing assembly 20;

[0084] The lower pressing assembly 30 is arranged opposite to the pressing assembly along the pressing direction; the upper pressing assembly 20 and the lower pressing assembly 30 have the same central axis.

[0085] The bearing assembly 40 includes an outer ring unit 41, an inner ring unit 42, a rolling unit 43, a first sealing ring 441, and a second sealing ring 442. The outer ring unit 41 is sleeved on the outer peripheral wall of the inner ring unit 42. The rolling unit 43 is located between the outer ring unit 41 and the inner ring unit 42. A first gap exists between the same end faces of the outer ring unit 41 and the inner ring unit 42 along the radial direction, and a second gap exists between the other end faces of the outer ring unit 41 and the inner ring unit 42 along the radial direction. The sealing ring pressing system includes a pressing state. In the pressing state, the first sealing ring 441 is installed on a first assembly position of the upper pressing assembly 20. The first assembly position includes the upper pressing assembly 20 engaging the inner peripheral wall or outer peripheral wall of the first sealing ring 441. The first sealing ring 442 is installed on the second assembly position of the lower pressing assembly 30. The second assembly position includes the inner peripheral wall of the lower pressing assembly 30 that engages with the second sealing ring 442. Based on the first and second assembly positions, the bearing assembly 40 is installed on the lower pressing assembly 30 and the upper pressing assembly 20 is driven to move along the pressing direction. The first sealing ring 441 is pressed along the pressing direction to the first gap between the outer ring unit 41 and the inner ring unit 42 of the bearing assembly 40, and the upper pressing assembly 20 has a first state. Based on the upper pressing assembly 20 having the first state, the second sealing ring 442 is pressed along the pressing direction to the second gap between the outer ring unit 41 and the inner ring unit 42, and the upper pressing assembly 20 has a second state.

[0086] Understandably, the sealing ring pressing system includes a base assembly 10, which includes a base body 11 and a drive unit 12. The upper pressing assembly 20 and the lower pressing assembly 30 are both mounted on the base body 11. The drive unit 12 is driven by the upper pressing assembly 20, driving it to move along the pressing direction. The bearing assembly 40 includes a sealing unit 44, which includes a first sealing ring 441 and a second sealing ring 442. The coaxial arrangement of the upper pressing assembly 20 and the lower pressing assembly 30 ensures the coaxiality of the first sealing ring 441 and the second sealing ring 442 with the bearing assembly 40 during the pressing process. The first assembly position and the second assembly position respectively position the first sealing ring 441 and the second sealing ring 442 according to different references, thereby improving the pressing accuracy. The effects of the first state, the second state, and different reference positioning are the same as in Embodiment 1, and will not be repeated here.

[0087] Furthermore, the upper pressing assembly 20 includes an upper limit stop 22, an upper pressing part 21, and an upper elastic part. The upper limit stop 22 is sleeved on the outer periphery of the upper pressing part 21, and the upper elastic part is disposed between the upper limit stop 22 and the upper pressing part 21, realizing the functions of radial guidance, axial limiting, and elastic buffering during the pressing process. The upper elastic part allows the upper limit stop 22 and the upper pressing part 21 to move relative to each other, thereby automatically adjusting the end faces to be flush when pressing the first sealing ring 441, ensuring accurate pressing depth and preventing damage to the bearing assembly 40.

[0088] Understandably, the upper limit stop 22 is used for radial centering and guidance, the upper pressing part 21 is used to directly push the first sealing ring 441, and the upper elastic part provides the relative movement capability between the two. After the upper limit stop 22 abuts against the outer ring unit 41, the upper pressing part 21 continues to descend and compress the upper elastic part, transmitting the thrust to the first sealing ring 441. Based on the upper elastic part, the rigid pressing is transformed into elastic pressing, avoiding impact and damage to the various components.

[0089] Furthermore, the lower pressing assembly 30 includes a lower limiting part 32, a lower pressing part 31, and a lower elastic part. The lower pressing part 31 is sleeved on the outer periphery of the lower limiting part 32, and the lower elastic part is disposed between the lower limiting part 32 and the lower pressing part 31, so that the pressing of the second sealing ring 442 is achieved by the inner ring unit 42 pushing the lower limiting part 32, compressing the lower elastic part, and the lower pressing part 31 pushing the second sealing ring 442 upward relative to each other.

[0090] For details, please refer to Figure 4 and Figure 5The outer ring unit 41 includes an outer ring body 411, a first outer raceway 412, and a second outer raceway 413; the first outer raceway 412 and the second outer raceway 413 are sequentially arranged along the axial direction on the inner peripheral wall of the outer ring body 411; the inner ring unit 42 includes a first inner ring 421, a second inner ring 423, a first inner raceway 422, and a second inner raceway 424; the first inner ring 421 and the second inner ring 423 are sequentially arranged along the axial direction, the first inner raceway 422 is located on the outer peripheral wall of the first inner ring 421; the second inner raceway 424 is located on the outer peripheral wall of the second inner ring 423; there is a gap between the outer ring body 411 and the first inner ring 421 and the second inner ring 423; the rolling unit 43 includes a first rolling element 431 and a second rolling element 432; the first outer raceway 412 and the first inner raceway 422 form a gap for the first rolling element 431 to roll; the second outer raceway 413 and the second inner raceway 424 form a gap for the second rolling element 432 to roll. Specifically, the first gap is located between the first outer raceway 412 and the first inner raceway 422, which do not interfere with the movement of the first rolling element 431; the second gap is located between the second outer raceway 413 and the second inner raceway 424, which do not interfere with the movement of the second rolling element 432, subject to actual application.

[0091] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made in form and detail without departing from the scope of the present invention.

Claims

1. A method for pressing a sealing ring, characterized in that, include: Install the first sealing ring at the first assembly position of the upper pressing assembly; The first assembly position includes the upper pressing component engaging the inner or outer peripheral wall of the first sealing ring; the first assembly position further includes: the end face of the first sealing ring abutting against at least a portion of the upper pressing portion facing the lower pressing component, and the outer peripheral wall of the first sealing ring abutting against the inner peripheral wall of the upper pressing portion; wherein, the upper pressing component includes the upper pressing portion and the upper pressing portion, and the upper pressing portion is sleeved on the outer peripheral side of the upper pressing portion; The second sealing ring is installed in the second assembly position of the lower pressing assembly; wherein, the second assembly position includes the inner peripheral wall of the lower pressing assembly that engages with the second sealing ring; Based on the first assembly position and the second assembly position, the bearing assembly is installed on the lower pressing assembly and the upper pressing assembly is driven to move along the pressing direction; wherein, the upper pressing assembly and the lower pressing assembly have the same central axis; the bearing assembly includes an outer ring unit, an inner ring unit and a rolling unit, the outer ring unit is sleeved on the outer peripheral wall of the inner ring unit, the rolling unit is located between the outer ring unit and the inner ring unit, a first gap is formed between the same end face of the outer ring unit and the inner ring unit in the radial direction, and a second gap is formed between the other end face of the outer ring unit and the inner ring unit in the radial direction; The first sealing ring is pressed into the first gap between the outer ring unit and the inner ring unit of the bearing assembly along the pressing direction, and the upper pressing assembly has a first state; wherein, the first state of pressing the first sealing ring into the first gap between the outer ring unit and the inner ring unit of the bearing assembly includes: Based on the movement of the upper pressing assembly along the pressing direction, at least a portion of the inner peripheral wall of the upper limit position portion abuts against the outer peripheral wall of the outer ring unit; Based on the continuous movement of the upper pressing component along the pressing direction, the first sealing ring is pressed into the first gap, the upper pressing part abuts against the end face of the inner ring unit, and the end face of the upper pressing part facing the lower pressing component is flush with the end face of the upper pressing part facing the lower pressing component; wherein, an upper elastic part is provided between the upper pressing part and the upper pressing part. Based on the first state of the upper pressing assembly, the second sealing ring is pressed along the pressing direction to the second gap between the outer ring unit and the inner ring unit, and the upper pressing assembly has a second state.

2. The sealing ring pressing method according to claim 1, characterized in that, The second assembly position also includes: The end face of the second sealing ring abuts against at least a portion of the lower pressing portion, and the inner peripheral wall of the second sealing ring abuts against the outer peripheral wall of the lower limiting portion; wherein, the lower pressing assembly includes the lower limiting portion and the lower pressing portion, and the lower pressing portion is sleeved on the outer peripheral side of the lower limiting portion.

3. The sealing ring pressing method according to claim 2, characterized in that, Based on the first state of the upper pressing assembly, pressing the second sealing ring into the second gap between the outer ring unit and the inner ring unit, the second state of the upper pressing assembly includes: Based on the continuous movement of the upper pressing assembly along the pressing direction, the end face of the inner ring unit abuts against at least a portion of the lower limiting portion and pushes the lower limiting portion to move along the pressing direction; The second sealing ring is pressed into the second gap between the outer ring unit and the inner ring unit, and the end face of the lower limiting part facing the upper pressing component is flush with the end face of the lower pressing part facing the upper pressing component; wherein, a lower elastic part is provided between the lower limiting part and the lower pressing part.

4. The sealing ring pressing method according to claim 3, characterized in that, Also includes: Based on the pressing stop command, the upper pressing component is driven to move away from the lower pressing component; The upper limit position is reset to a point where the end face of the upper limit position near the lower pressing assembly and the end face of the upper pressing assembly near the lower pressing assembly have a first height difference; the first height difference includes: the distance between the end face of the upper limit position near the lower pressing assembly and the end face of the bearing assembly is less than the distance between the end face of the upper pressing assembly near the lower pressing assembly and the end face of the bearing assembly; The lower limit portion is reset to a point where the end face of the lower limit portion near the upper pressing assembly and the end face of the lower pressing portion near the upper pressing assembly have a second height difference; the second height difference includes: the distance between the end face of the lower limit portion near the upper pressing assembly and the end face of the bearing assembly is less than the distance between the end face of the lower pressing portion near the upper pressing assembly and the end face of the bearing assembly.

5. A sealing ring pressing system, characterized in that, The sealing ring pressing system, applicable to the sealing ring pressing method according to any one of claims 1-4, comprises: Upper pressing assembly; The lower pressing assembly is arranged opposite to the upper pressing assembly along the pressing direction; the upper pressing assembly and the lower pressing assembly have the same central axis. A bearing assembly includes an outer ring unit, an inner ring unit, a rolling element, a first sealing ring, and a second sealing ring. The outer ring unit is fitted onto the outer peripheral wall of the inner ring unit. The rolling element is located between the outer ring unit and the inner ring unit. A first gap exists between the same end faces of the outer ring unit and the inner ring unit along the radial direction, and a second gap exists between the other end faces of the outer ring unit and the inner ring unit along the radial direction. The sealing ring pressing system includes a pressing state. In the pressing state, the first sealing ring is installed on a first assembly position of an upper pressing assembly. The first assembly position includes the upper pressing assembly engaging the inner or outer peripheral wall of the first sealing ring, and the second sealing ring... The ring is installed at the second assembly position of the lower pressing assembly; the second assembly position includes the inner peripheral wall of the lower pressing assembly engaging the second sealing ring; based on the first assembly position and the second assembly position, the bearing assembly is installed on the lower pressing assembly and the upper pressing assembly is driven to move along the pressing direction; the first sealing ring is pressed along the pressing direction to the first gap between the outer ring unit and the inner ring unit of the bearing assembly, the upper pressing assembly has a first state, based on the upper pressing assembly having the first state; the second sealing ring is pressed along the pressing direction to the second gap between the outer ring unit and the inner ring unit, the upper pressing assembly has a second state.

6. A sealing ring pressing system according to claim 5, characterized in that, The upper pressing assembly includes an upper limit position, an upper pressing part, and an upper elastic part. The upper limit position is sleeved on the outer periphery of the upper pressing part, and the upper elastic part is disposed between the upper limit position and the upper pressing part.

7. A sealing ring pressing system according to claim 5, characterized in that, The lower pressing assembly includes a lower limiting part, a lower pressing part, and a lower elastic part. The lower pressing part is sleeved on the outer periphery of the lower limiting part, and the lower elastic part is disposed between the lower limiting part and the lower pressing part.

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