Inner ring supply device and method

Abstract

The invention relates to the technical field of bearing machining, in particular to an inner ring feeding device and method. The inner ring supply device comprises a first fixing pipe; a second fixing pipe; the flexible assembly comprises a first flexible section and a second flexible section; the first fixing pipe, the first flexible section, the second flexible section and the second fixing pipe are sequentially connected to form a supply channel; the first flexible section is set to be semi-arc-shaped; the supply direction of the supply channel is from top to bottom; the central axis of the first fixing pipe and the central axis of the second fixing pipe are arranged at intervals. The preparation state of the supply device includes that the minimum included angle alpha between the first flexible section cambered surface normal and the first fixed pipe supply direction is smaller than or equal to a set value. And the supply state of the supply device comprises that the first flexible section arc surface is extruded by the inner ring, so that the minimum included angle alpha is reduced. Therefore, the problem that the surface of the inner ring is damaged due to collision generated in the conveying process of the inner ring feeding device is solved.

Description

Technical Field

[0001] This invention relates to the field of bearing processing technology, and more specifically, to an inner ring supply device and method. Background Technology

[0002] As a fundamental precision mechanical component, the bearing inner ring is widely used in high-end equipment fields such as automobiles, machine tools, and wind power. Its surface quality directly affects the bearing's precision, lifespan, and operational reliability. To achieve automated feeding in the inner ring grinding production line, a conveyor channel is typically used, and existing technologies generally employ rigid metal pipes as the conveyor channel.

[0003] However, due to the rigid structure of the channel, it cannot effectively absorb or buffer collision energy, resulting in surface defects such as dents, scratches, or indentations on the outer circumference of the inner ring workpiece. These damages cannot be eliminated in subsequent precision grinding, leading to increased product defect rates, higher production costs, and affecting the final performance and reliability of the bearing. Therefore, there is an urgent need to develop a new type of inner ring supply device that can fundamentally alleviate the problem of inner ring surface damage caused by collisions during inner ring transportation. Summary of the Invention

[0004] To address the problem of inner ring surface damage caused by collisions during the inner ring supply process, this invention provides an inner ring supply device and method.

[0005] In a first aspect, the present invention provides an inner ring supply device, comprising:

[0006] First fixed tube;

[0007] Second fixed tube;

[0008] The flexible component includes a first flexible segment and a second flexible segment; a first fixed tube, the first flexible segment, the second flexible segment, and the second fixed tube are connected in sequence to form a supply channel; the first flexible segment is configured in a semi-circular shape.

[0009] The supply direction of the supply channel is from top to bottom; the central axis of the first fixed pipe and the central axis of the second fixed pipe are spaced apart;

[0010] The preparation state of the supply device includes the minimum angle α between the normal of the arc surface of the first flexible section and the supply direction of the first fixed tube being less than or equal to a set value.

[0011] The supply state of the supply device includes the first flexible section arc surface being squeezed by the inner ring, causing the minimum included angle α to decrease.

[0012] In some embodiments, the set value is greater than 0° and less than 60°.

[0013] In some embodiments, the first flexible segment and the second flexible segment are integrally formed and spiraled several times along the central axis of the first flexible segment and the second flexible segment, wherein the central axis of the first flexible segment and the second flexible segment is a curve.

[0014] In some embodiments, the minimum pitch of the first flexible segment is less than the minimum pitch of the second flexible segment.

[0015] In some embodiments, the first fixing tube is provided with a plurality of first guide springs and guide plates;

[0016] The first fixed tube includes multiple first fixed plates, which enclose and form a first receiving space that extends along the supply direction. Multiple first guide springs and guide plates are arranged sequentially in the first receiving space along the supply direction. The first guide springs and guide plates are connected to a first fixed plate and extend a first preset distance toward the central axis of the first fixed tube. The guide plates are tilted at a preset angle toward the side closer to the first flexible section.

[0017] In some embodiments, a plurality of second guide springs are provided inside the second fixing tube;

[0018] The second fixed tube includes multiple second fixed plates, which enclose and form a second receiving space that extends through the supply direction. Multiple second guide springs are arranged in the second receiving space along the supply direction. The second guide springs are connected to a second fixed plate and extend a second preset distance toward the central axis of the second fixed tube.

[0019] In some embodiments, the inner ring supply device further includes:

[0020] The inclined slide assembly includes an inclined slide and an elastic pad and a sensor disposed within the inclined slide. The inclined slide is movably connected to the end of the second fixed tube away from the flexible assembly. The inclined slide is provided with a conveying groove in a direction perpendicular to the supply direction. The elastic pad and the sensor are located within the conveying groove and are located under the orthographic projection of the second flexible section.

[0021] In some embodiments, the inner ring supply device further includes:

[0022] The conveying assembly includes a horizontal conveying unit, a vertical conveying unit, and a clamping unit; the horizontal conveying unit and the vertical conveying unit are slidably connected, and the vertical conveying unit and the clamping unit are movably connected, with the clamping unit used to clamp the inner ring.

[0023] In a second aspect, the present invention provides an inner ring supply method, which is applied to an inner ring supply device as described in the first aspect, the inner ring supply method comprising:

[0024] Triggered by the supply command, the inner ring is placed into the first fixed tube;

[0025] The inner ring enters the first fixed tube and falls into the first flexible section along the supply channel under the action of gravity; wherein, the inner ring contacts and squeezes the arc surface of the first flexible section, and the minimum included angle α becomes smaller;

[0026] The inner ring passes through the first flexible section, the second flexible section, and the second fixed pipe sequentially along the supply channel.

[0027] In some embodiments, the inner ring, after passing sequentially along the supply channel from the first flexible section, through the second flexible section, and the second fixed tube, further includes:

[0028] The inner ring falls into the conveying trough along the supply channel. The sensor identifies whether the inner ring has stayed in the conveying trough for a preset time. If the inner ring is identified to have stayed for the preset time, the introduction of another inner ring will stop. The sensor is located in the conveying trough and is under the orthographic projection of the second flexible section.

[0029] To address the problem of surface damage to the inner ring caused by collisions during the inner ring supply process, this invention offers the following advantages:

[0030] The inner ring supply device includes a first fixed tube, a flexible component, and a second fixed tube connected in sequence, forming a supply channel for supplying the inner ring. The flexible component includes a first flexible segment and a second flexible segment connected in sequence. The minimum angle α between the arc surface normal of the first flexible segment and the supply direction of the first fixed tube is less than or equal to a set value. That is, in the preparation state, the first flexible segment is a relatively smooth and gentle semi-circular shape. After the inner ring falls into the first flexible segment, it slides in a curved path, which reduces the impact on the inner ring during the supply process while ensuring transportation efficiency, thus reducing the probability of excessive wear or damage. In the supply state, the first flexible segment has a rebound force. After the inner ring falls into the first flexible segment, the minimum angle α of the arc surface of the first flexible segment will decrease after being squeezed by the inner ring. This rebound can provide a buffer for the inner ring to fall in, further reducing the problem of excessive wear or damage to the inner ring due to impact during the supply process, thereby reducing the product defect rate and production costs. Attached Figure Description

[0031] Figure 1 A cross-sectional view of an embodiment of an inner ring supply device is shown;

[0032] Figure 2 A schematic diagram of the inner ring supply device of one embodiment is shown;

[0033] Figure 3 A schematic diagram of part A of the inner ring supply device in one embodiment is shown;

[0034] Figure 4 A top view schematic diagram of an embodiment of the slant slide assembly is shown;

[0035] Figure 5 A schematic diagram of the structure of an embodiment of the inclined sliding assembly is shown;

[0036] Figure 6 A schematic flowchart of another embodiment of the inner ring supply method is shown;

[0037] Figure 7 Another schematic diagram of the inner ring supply method in another embodiment is shown.

[0038] Figure label:

[0039] 10. First fixing component; 11. Frustum tube; 12. First fixing unit; 121. First fixing tube; 1211. First fixing plate; 1212. First receiving space; 122. First guide spring; 123. Guide plate; 20. Flexible component; 21. First flexible segment; 22. Second flexible segment; 30. Second fixing component; 31. Second fixing tube; 311. Second fixing plate; 312. Second receiving space; 32. Second guide spring; 40. Inclined slide component; 41. Inclined slide rail; 42. Elastic pad; 43. Sensor; 44. Conveying groove; 50. Inner ring; 60. Transport component; 61. Horizontal transport unit; 62. Vertical transport unit; 63. Clamping unit. Detailed Implementation

[0040] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0041] 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 for the purpose of better describing the invention and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances. In addition, the terms "installed", "set", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be 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 above terms in this invention according to 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.

[0042] The bearing inner ring is a precision rotating core component, characterized by high precision, high wear resistance, and high reliability. It is widely used in high-end equipment fields such as automotive wheel hubs, gearboxes, machine tool spindles, and wind turbine generators. The inner ring, in precise fit with the rolling elements and shaft, directly determines the bearing's rotational accuracy, load-bearing capacity, service life, and overall operational stability, making it a key fundamental component for improving the performance and reliability of main equipment. The machining of the inner ring involves multiple processes, typically using rigid metal conduits as transport channels between each process. However, this rigid structure makes the outer circumference of the inner ring workpiece susceptible to surface defects such as dents, scratches, or indentations.

[0043] Therefore, the present invention provides an inner ring supply device that can solve the problem of inner ring surface damage caused by collision during inner ring transportation.

[0044] Example 1:

[0045] This embodiment provides an inner ring supply device; please refer to [reference needed]. Figure 1 and Figure 2 ,include:

[0046] The first fixed tube 121 and the second fixed tube 31, for example, are made of rigid materials (such as metal) and can serve as the starting and ending fixed ends of the entire conveying channel. The inner ring 50 enters through the first fixed tube 121 and exits through the second fixed tube 31. The materials of the first fixed tube 121 and the second fixed tube 31 include rigid materials but are not limited to them. The specific materials depend on the actual application.

[0047] In this embodiment, the central axis of the first fixed tube 121 and the central axis of the second fixed tube 31 are spaced apart and can be relatively parallel, that is, there is a certain horizontal offset between them. This offset design allows the flexible component 20 to have specific deformation.

[0048] In this embodiment, the flexible component 20 includes a first flexible segment 21 and a second flexible segment 22; the first fixed pipe 121, the first flexible segment 21, the second flexible segment 22, and the second fixed pipe 31 are sequentially connected to form a supply channel, wherein the first flexible segment 21 is semi-arc-shaped. Furthermore, the first flexible segment 21 and the second flexible segment 22 are respectively connected to one end of the first fixed pipe 121 and the second fixed pipe 31 by welding, clamping, or flange sealing, so that they together form a supply channel for the inner ring 50 to pass through. The overall supply direction of the supply channel is from top to bottom, and the conveying is achieved by the gravity of the inner ring 50.

[0049] In this embodiment, please refer to Figure 3 The supply device includes a ready state and a supply state. The ready state includes a minimum angle α between the arc normal of the first flexible section 21 and the supply direction of the first fixed tube 121 that is less than or equal to a set value. The minimum angle α indicates that the bending can be kept within a smooth and gentle range, so that the inner ring 50 can make curved motion along the arc of the first flexible section 21 after entering the supply channel. Compared with the related technology, which directly falls into the rigid transport channel, this can effectively reduce the impact force of the inner ring 50 falling, reduce collisions, and reduce the probability of damage, jamming or excessive wear of the inner ring 50 during transportation.

[0050] In this embodiment, the supply state of the supply device includes the first flexible segment 21 arc surface being squeezed by the inner ring 50, causing the minimum included angle α to decrease.

[0051] Specifically, when the inner ring 50 falls into the first flexible section 21, the weight of the inner ring 50 itself and the speed of its descent will impact and compress the arc surface of the first flexible section 21, causing it to undergo elastic deformation. This deformation process reduces the minimum included angle α. This dynamic bending and deformation process can absorb the impact of the inner ring 50 falling and buffer the impact force generated by the inner ring 50, thereby greatly reducing the collision speed and force between the inner ring 50 and the channel wall, fundamentally avoiding the occurrence of bumps and bruises.

[0052] Further, please refer to Figure 2 and Figure 3 The set value is greater than 0° and less than 60°.

[0053] Preferably, the set value is greater than or equal to 30° and less than or equal to 45°, so that the bending of the first flexible segment 21 is kept in a smooth and gentle state. The specific set value shall be subject to the actual application.

[0054] Furthermore, the first flexible segment 21 and the second flexible segment 22 are integrally formed and spiraled several times along the central axis of the first flexible segment 21 and the second flexible segment 22, wherein the central axis of the first flexible segment 21 and the second flexible segment 22 is a curve.

[0055] Specifically, the cross-sections of the first flexible segment 21 and the second flexible segment 22 are circular or rectangular, depending on the actual application, and are not specifically limited in this embodiment. The first flexible segment 21 and the second flexible segment 22 can be made of materials with certain elasticity and wear resistance, such as polyurethane, ultra-high molecular weight polyethylene, or a flexible tube with an embedded spring skeleton. Alternatively, they can be made of metal material spiraled several times along the central axis of the first flexible segment 21 and the second flexible segment 22, such as a spring, depending on the actual application. This spiral structure further enhances the buffering and self-adaptive capabilities of the flexible component 20, and can better guide and adjust the falling posture of the inner ring 50.

[0056] Furthermore, the minimum pitch of the first flexible segment 21 is less than the minimum pitch of the second flexible segment 22.

[0057] Understandably, both the first flexible segment 21 and the second flexible segment 22 can be semi-circular. The degree of curvature of the first flexible segment 21 is greater than that of the second flexible segment 22. Whether in the preparation state or the supply state, the minimum pitch of the first flexible segment 21 is less than that of the second flexible segment 22, ensuring that the inner ring 50 can fall into the smooth first flexible segment 21 on the first time, minimizing the impact force of the inner ring 50 falling in. Furthermore, since the degree of curvature of the second flexible segment 22 is smaller, it can avoid jamming and secondary impact when passing under the action of gravity, further reducing the probability of damage or wear to the inner ring 50.

[0058] Further, please refer to Figure 1 and Figure 2 The first fixing unit 12 includes a first fixing tube 121, a first guide spring 122 and a guide plate 123. The first fixing tube 121 is provided with a plurality of first guide springs 122 and guide plates 123.

[0059] The first fixing tube 121 includes multiple first fixing plates 1211, which enclose and form a first receiving space 1212 extending along the supply direction. For example, there may be four first fixing plates 1211, forming a first fixing tube 121 with a rectangular cross-section. The specific cross-section depends on the actual application. Multiple first guide springs 122 and guide plates 123 are arranged sequentially in the first receiving space 1212 along the supply direction. The first guide springs 122 and guide plates 123 are connected to a first fixing plate 1211 and extend a first preset distance toward the central axis of the first fixing tube 121. The guide plates 123 are inclined at a preset angle toward the side closer to the first flexible segment 21.

[0060] Understandably, multiple first guide springs 122 are arranged at intervals along the supply direction. One end of each spring is fixedly connected to a first fixing plate 1211, and the other end extends a first preset distance toward the central axis of the first fixing plate 121. This first preset distance does not affect the passage of the inner ring 50. Specifically, the first preset distance is greater than or equal to the length of the first fixing tube 121 minus the diameter of the inner ring 50, but does not affect the passage of the inner ring 50. For example, the length of the first fixing tube 121 is 6 cm, the diameter of the inner ring 50 is 4 cm, and the range of the first preset distance is 2 cm to 2.5 cm, depending on the actual application. Furthermore, the ends of the first guide springs 122 extending toward the central axis of the first fixing tube 121 naturally bend to form a guide opening, ensuring that the first guide springs 122 can buffer and guide the descent of the inner ring 50.

[0061] For example, the first guide spring 122 can be a rubber material with a cushioning effect, and the shape of the first guide spring 122 in contact with the inner ring 50 can be a shape that fits the inner ring 50, so as to reduce the negative impact of the first guide spring 122 and the inner ring 50 to a greater extent. The specific application shall prevail and no limitation shall be made in this application.

[0062] In this embodiment, the guide plate 123 is also fixed on a first fixed plate 1211 and tilted at a preset angle toward the side closer to the first flexible segment 21 to ensure that the inner ring 50 is smoothly introduced into the flexible component 20. The preset angle is greater than or equal to 30° and less than or equal to 50°, depending on the actual application.

[0063] Furthermore, in addition to the first fixing unit 12, the first fixing component 10 also includes a frustum tube 11 for guiding the inner ring 50. The frustum tube 11 can be a trapezoidal opening structure. One side of the frustum tube 11 is fixedly connected to the side of the first fixing tube 121 away from the flexible component 20. The inner ring 50 passes through the frustum tube 11 and then enters the first fixing tube 121.

[0064] Further, please refer to Figure 1 and Figure 2 The second fixing component 30 includes a second fixing tube 31 and a second guide spring 32, and the second fixing tube 31 is provided with a plurality of second guide springs 32.

[0065] Specifically, the second fixing tube 31 includes a plurality of second fixing plates 311, which enclose and form a second receiving space 312 that extends through the supply direction. A plurality of second guide springs 32 are arranged in the second receiving space 312 along the supply direction. The second guide springs 32 are connected to a second fixing plate 311 and extend a second preset distance toward the central axis of the second fixing tube 31.

[0066] Specifically, the second guide spring 32 extends a second preset distance that is greater than or equal to the length of the second fixed tube 31 minus the diameter of the inner ring 50, but does not affect the passage of the inner ring 50, ensuring that the second guide spring 32 can play a role in buffering and guiding the fall of the inner ring 50, which will not be elaborated here.

[0067] Further, please refer to Figure 4 and Figure 5 The inner ring supply device also includes:

[0068] The inclined slide assembly 40 includes an inclined slide 41 and an elastic pad 42 and a sensor 43 disposed within the inclined slide 41. The inclined slide 41 is movably connected to the end of the second fixed tube 31 away from the flexible assembly 20. The movable connection is, for example, through a hinge connection, so that the tilt angle of the inclined slide 41 relative to the second fixed tube 31 is adjustable, thereby improving the efficiency of transporting the inner ring 50 and preventing the inner ring 50 from accumulating in the inclined slide 41.

[0069] Specifically, the inclined slide 41 is provided with a conveying groove 44 in a direction perpendicular to the supply direction, and the elastic pad 42 and the sensor 43 are located in the conveying groove 44 and under the orthogonal projection of the second flexible section 22.

[0070] For example, the elastic pad 42 can be made of rubber or other elastic material, and the inner ring 50 can fall directly into the elastic pad 42 when it falls from the second fixing tube 31, further cushioning and protecting the inner ring 50.

[0071] Specifically, sensor 43 can be a photoelectric sensor 43 or a pressure sensor 43. When the inner ring 50 falls onto the elastic pad 42 of the conveying groove 44 and stays for a preset time, sensor 43 is triggered, that is, the sensor sends a signal to stop feeding another inner ring 50, ensuring that the inner ring 50 will not accumulate in any position of the first fixed tube 121, the flexible component 20, the second fixed tube 31 and the inclined sliding component 40, and avoiding collisions between the inner ring 50 and the other inner ring 50. The preset time can be 2s-5s, and the specific preset time depends on the actual application. The principle is not to reduce the processing efficiency of the inner ring 50. No specific limitation is made in this embodiment.

[0072] Furthermore, the inner ring supply device also includes:

[0073] The conveying assembly 60 includes a horizontal conveying unit 61, a vertical conveying unit 62, and a clamping unit 63. The horizontal conveying unit 61 is slidably connected to the vertical conveying unit 62, which can drive the vertical conveying unit 62 to move horizontally. The vertical conveying unit 62 is movably connected to the clamping unit 63, which can drive the clamping unit 63 to move vertically. The clamping unit 63 is used to clamp the inner ring 50 and send the inner ring 50 into the frustum tube 11. The inner ring 50 enters the first fixed tube 121 along the frustum tube 11.

[0074] Example 2:

[0075] Please refer to Figure 6 This embodiment provides an inner ring supply method based on the aforementioned inner ring supply device, comprising the following steps S1-S4:

[0076] S1, based on the triggering of the supply command, the inner ring 50 is placed into the first fixed tube 121;

[0077] S2, the inner ring 50 enters the first fixed tube 121 and falls into the first flexible section 21 along the supply channel under the action of gravity; wherein, the inner ring 50 contacts and squeezes the arc surface of the first flexible section 21, and the minimum included angle α becomes smaller.

[0078] S3, the inner ring 50 passes through the first flexible section 21, the second flexible section 22, and the second fixed pipe 31 along the supply channel.

[0079] Furthermore, the inner ring 50, following the supply channel from the first flexible section 21 through the second flexible section 22 and the second fixed tube 31, also includes:

[0080] Please refer to Figure 7 S4, the inner ring 50 falls into the conveying trough 44 along the supply channel. The sensor 43 identifies whether the inner ring 50 stays in the conveying trough 44 for a preset time. If the inner ring 50 stays for a preset time, the input of another inner ring 50 is stopped. The sensor 43 is located in the conveying trough 44 and under the orthographic projection of the second flexible section 22.

[0081] Furthermore, when the inner ring 50 falls and remains for a preset time, the sensor 43 is triggered, and the sensor 43 sends a signal to stop the input of another inner ring 50, ensuring that the inner ring 50 does not accumulate in any of the first fixed tube 121, flexible component 20, second fixed tube 31, and inclined sliding component 40, thus avoiding collisions between inner rings 50 and other inner rings 50. The preset time can be 2s-5s, and the specific preset time depends on the actual application, with the principle of not reducing the processing efficiency of the inner ring 50. When the inner ring 50 falls for less than the preset time, the sensor 43 is not triggered, and the conveying component 60 continues to input an inner ring 50 for transportation, depending on the actual application.

[0082] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. An inner ring supply device, characterized in that, The inner ring supply device includes: First fixed tube; Second fixed tube; The flexible component includes a first flexible segment and a second flexible segment; the first fixed tube, the first flexible segment, the second flexible segment, and the second fixed tube are connected in sequence to form a supply channel; the first flexible segment is configured in a semi-circular shape. The supply direction of the supply channel is from top to bottom; the central axis of the first fixed tube and the central axis of the second fixed tube are spaced apart; The preparation state of the supply device includes the minimum angle α between the normal of the arc surface of the first flexible segment and the supply direction of the first fixed tube being less than or equal to a set value. The supply state of the supply device includes the first flexible segment arc surface being squeezed by the inner ring, causing the minimum included angle α to decrease.

2. The inner ring supply device according to claim 1, characterized in that, The set value is greater than 0° and less than 60°.

3. The inner ring supply device according to claim 1, characterized in that, The first flexible segment and the second flexible segment are integrally formed and spiraled several times along the central axis of the first flexible segment and the second flexible segment, wherein the central axis of the first flexible segment and the second flexible segment is a curve.

4. The inner ring supply device according to claim 3, characterized in that, The minimum pitch of the first flexible segment is less than the minimum pitch of the second flexible segment.

5. The inner ring supply device according to claim 1, characterized in that, The first fixed tube is provided with a plurality of first guide springs and guide plates; The first fixed tube includes a plurality of first fixed plates, which enclose and form a first receiving space extending along the supply direction. A plurality of first guide springs and the guide plates are arranged sequentially in the first receiving space along the supply direction. The first guide springs and the guide plates are connected to a first fixed plate and extend a first preset distance toward the central axis of the first fixed tube. The guide plates are inclined at a preset angle toward the side closer to the first flexible segment.

6. The inner ring supply device according to claim 1, characterized in that, The second fixing tube is provided with multiple second guide springs; The second fixing tube includes a plurality of second fixing plates, which enclose and form a second receiving space that extends through the supply direction. A plurality of second guide springs are arranged in the second receiving space along the supply direction. The second guide springs are connected to a second fixing plate and extend a second preset distance toward the central axis of the second fixing tube.

7. The inner ring supply device according to claim 3, characterized in that, The inner ring supply device also includes: The inclined slide assembly includes an inclined slide rail, an elastic pad and a sensor disposed within the inclined slide rail, the inclined slide rail being movably connected to the end of the second fixed tube away from the flexible assembly; the inclined slide rail is provided with a conveying groove in a direction perpendicular to the supply direction, the elastic pad and the sensor being located within the conveying groove and under the orthographic projection of the second flexible section.

8. The inner ring supply device according to claim 1, characterized in that, The inner ring supply device also includes: The conveying assembly includes a horizontal conveying unit, a vertical conveying unit, and a clamping unit; the horizontal conveying unit and the vertical conveying unit are slidably connected, and the vertical conveying unit is movably connected to the clamping unit, the clamping unit being used to clamp the inner ring.

9. An inner ring supply method, characterized in that, The inner ring supply method is applied to any one of the inner ring supply devices according to claims 1-8, and the inner ring supply method includes: Triggered by the supply command, the inner ring is placed into the first fixed tube; The inner ring enters the first fixed tube and falls into the first flexible section along the supply channel under the action of gravity; wherein, the inner ring contacts and squeezes the arc surface of the first flexible section, and the minimum included angle α becomes smaller; The inner ring passes sequentially along the supply channel from the first flexible section through the second flexible section and the second fixed tube.

10. The inner ring supply method according to claim 9, characterized in that, The inner ring, following the supply channel from the first flexible section, sequentially passing through the second flexible section and the second fixed tube, further includes: The inner ring falls into the conveying trough along the supply channel, and the sensor identifies whether the inner ring remains in the conveying trough for a preset time. If the inner ring is identified to remain for the preset time, the introduction of another inner ring is stopped. The sensor is located in the conveying trough and under the orthographic projection of the second flexible section.

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