Check ring assembling device

Abstract

The utility model discloses a retainer ring assembling device which comprises a guide seat and a press-fitting component which are matched with each other, the guide seat is provided with a conical hole, the press-fitting component is provided with an outer pressure head and an inner pressure head, the outer pressure head is located on the radial periphery of the inner pressure head, and the outer pressure head is pressed down in the process that the press-fitting component extends into the conical hole to enable the outer pressure head to push a retainer ring downwards. The hole wall of the conical hole forces the check ring to shrink in the radial direction, so that the check ring can smoothly enter the inner hole of the outer sleeve and then be clamped in the annular clamping groove of the inner hole. By means of the assembling device, manual work can be replaced to automatically assemble the check ring into the annular clamping groove of the outer sleeve, and therefore the assembling efficiency of functional parts can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of component assembly, in particular to a retaining ring assembly device used for assembling a retaining ring in an annular clamping groove of a sleeve-type component. Background Art

[0002] like Figure 1 As shown, Figure 1 A schematic structural diagram of a clutch (as a functional component 200) in an assembled state is shown, the clutch comprising: an outer sleeve 201, an inner sleeve 202 whose inner end extends into the outer sleeve 201, a spring 203 compressed in the inner hole of the outer sleeve 201 and sleeved outside the inner sleeve 202, a spring seat 204 pressed against the outer end of the spring 203, and a retaining ring 205 clamped in an annular groove 206 of the inner hole of the outer end of the outer sleeve 201. In the prior art, the above-mentioned clutch is assembled by the following process: first, the inner sleeve 202 is inserted into the outer sleeve 201, and then the spring 203 is sleeved on the inner sleeve 202. At this time, the inner end of the spring 203 is located in the outer sleeve 201, and the outer end of the spring 203 is located outside the outer end of the outer sleeve 201. Then, the spring seat 204 is placed on the outer end of the spring 203, and the spring seat 204 and the spring 205 are pressed into the inner hole of the outer sleeve 201 by a cylinder until the annular groove 206 is exposed. Then, the retaining ring 205 is installed into the annular groove 206 by an operating tool such as needle-nosed pliers, thereby completing the assembly. However, due to the narrow operating space between the outer sleeve 201 and the inner sleeve 202, the operation process of installing the retaining ring 205 into the annular groove 206 by an operating tool such as needle-nosed pliers is relatively difficult.

[0003] Therefore, it is necessary to design an assembly device to facilitate the convenient installation of the retaining ring into the annular groove of a component such as the above-mentioned clutch. Utility Model Content

[0004] In view of the above problems existing in the prior art, the purpose of the utility model is to provide a retaining ring assembly device to solve the problems in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following scheme.

[0006] A retaining ring assembly device, used for installing the retaining ring into an annular groove of a functional component, wherein the functional component comprises an outer sleeve, an inner sleeve whose inner end extends into an inner hole of the outer sleeve, a spring sleeved on the inner sleeve and located in the outer sleeve, and a spring seat for pressing the outer end of the spring, wherein the outer end of the inner hole of the outer sleeve has an annular groove, and the retaining ring limits the spring seat by being installed in the annular groove;

[0007] The retaining ring assembly device comprises:

[0008] A positioning seat, on which the outer sleeve is vertically placed, and into which the inner sleeve is inserted;

[0009] A guide seat, which is located above the positioning seat and can move vertically;

[0010] A press-fitting component, which is located above the guide seat and can move vertically;

[0011] A driving mechanism, which is used to drive the guide seat and the press-fitting component to move vertically; wherein:

[0012] The guide seat has a vertically penetrating tapered hole, the radial dimension of the lower end of the tapered hole is less than or equal to the radial dimension of the inner hole of the outer sleeve, after the guide seat moves downward, the lower end of the tapered hole is butted against the outer sleeve, and the outer end of the inner sleeve and the outer end of the spring are both extended into the tapered hole, the spring seat is placed on the outer end of the spring, and the retaining ring is placed on the spring seat;

[0013] The press-fitting component comprises an inner pressure head corresponding to the radial inner side of the spring seat and an outer pressure head corresponding to the retaining ring, wherein the outer pressure head is radially located outside the inner pressure head, and the lower end of the inner pressure head is lower than the lower end of the outer pressure head, so that when the driving mechanism drives the press-fitting component to move downward, the inner pressure head first pushes the spring seat downward and then the outer pressure head pushes the retaining ring downward;

[0014] When the outer pressure head pushes the retaining ring to slide downward along the tapered hole, the wall of the tapered hole forces the retaining ring to contract radially, so that the retaining ring enters the inner hole of the outer sleeve and expands and is clamped in the annular groove when it reaches the annular groove.

[0015] Preferably, the external pressure head comprises a plurality of external push bars arranged at intervals in the circumferential direction, and the lower ends of the plurality of external push bars are flush with each other, and the internal pressure head comprises a plurality of internal push bars arranged at intervals in the circumferential direction, and the lower ends of the plurality of internal push bars are flush with each other; wherein:

[0016] Each of the extrapolation bars corresponds to the gap between two adjacent inner push bars;

[0017] The radial dimension of the lower end of the tapered hole is smaller than the radial dimension of the circle enclosed by the radial outer side of the push strip. Therefore, when the external pressure head pushes the retaining ring downward, the hole wall of the tapered hole forces the push strip to deform radially inward, causing the push strip to move down while adhering to the hole wall of the tapered hole.

[0018] Preferably, the extrapolation strip includes a main body portion and a thickened portion formed at a lower end of the main body portion, and the thickened portion is thicker than the main body portion.

[0019] Preferably, the retaining ring comprises a wire retaining ring.

[0020] Preferably, a stop step surface is arranged at the bottom of the guide seat, the lower end of the tapered hole passes through the stop step surface, and the outer end of the outer sleeve abuts against the stop step surface.

[0021] Preferably, the retaining ring assembly device further comprises a frame;

[0022] The frame comprises:

[0023] A bottom plate, the positioning seat is installed on the bottom plate;

[0024] A first guide column, which is vertically mounted on the bottom plate;

[0025] A lower slide plate, which is located above the bottom plate and slidably cooperates with the first guide column, and the guide seat is installed on the lower slide plate;

[0026] An upper slide plate, which is located above the lower slide plate and is slidably matched with the first guide column, and the press-fitting component is installed on the upper slide plate;

[0027] A second guide column is vertically mounted on the upper slide plate and passes through the lower slide plate;

[0028] An actuating compression spring is sleeved on the second guide post; wherein:

[0029] The driving mechanism comprises a cylinder, the cylinder is located above the upper slide plate and a piston rod of the cylinder is connected to the upper slide plate;

[0030] The piston rod of the cylinder has a first driving displacement and a second driving displacement. When the upper slide plate is driven within the first driving displacement, the upper slide plate drives the lower slide plate to move downward through the actuating compression spring so that the guide seat and the outer sleeve are docked. When the upper slide plate is continued to be driven within the second driving displacement, the upper slide plate forces the actuating compression spring to be compressed and move downward relative to the lower slide plate, so that the press-fit component moves downward relative to the guide seat and enters the tapered hole.

[0031] Preferably, a vertical limiting shaft is installed on the lower sliding plate, and the limiting shaft is used to limit the distance between the upper sliding plate and the lower sliding plate after the upper sliding plate moves downward.

[0032] Preferably, the plurality of circumferentially arranged outer push strips and the plurality of circumferentially arranged inner push strips are obtained from the sleeve by cutting material.

[0033] Preferably, a circular arc notch is provided at the root of the extrapolation strip.

[0034] Preferably, the actuating compression spring is a conical column spring.

[0035] Compared with the prior art, the retaining ring assembly device provided by the utility model has the following advantages:

[0036] The assembly device provided by the utility model can replace manual work to automatically assemble the retaining ring into the annular groove of the outer sleeve, thereby significantly improving the assembly efficiency of the functional components.

[0037] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to restrict the present invention.

[0038] The overview of various implementations or examples of the technology described in this utility model is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In the drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the utility model. When appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present device or method.

[0040] Figure 1 It is a structural schematic diagram of a functional component in the prior art in an assembled state.

[0041] Figure 2 This is a schematic diagram of the three-dimensional structure of the retaining ring assembly device provided in an embodiment of the utility model (the retaining ring has been installed in the functional component).

[0042] Figure 3 The present invention is a three-dimensional structural schematic diagram of a press-fit component in a retaining ring assembly device provided in an embodiment of the present invention.

[0043] Figure 4 A main sectional view of a retaining ring assembly device provided in an embodiment of the utility model (the retaining ring has been installed in a functional component).

[0044] Figure 5 A working state view of the retaining ring assembly device provided in an embodiment of the utility model (the lower slide plate moves downward to press the guide seat against the outer sleeve).

[0045] Figure 6 for Figure 5 An enlarged view of detail A.

[0046] Figure 7A working state view of the retaining ring assembly device provided by an embodiment of the utility model (the press-fitting component enters into the tapered hole and pushes against the spring seat and the retaining ring).

[0047] Figure 8 for Figure 7 An enlarged view of detail B.

[0048] Reference numerals:

[0049] 10-pressed component; 11-inner pressure head; 111-inner push strip; 12-outer pressure head; 121-outer push strip; 1211-thickened portion; 1212-main body; 1213-arc notch; 20-positioning seat; 30-guide seat; 31-conical hole; 32-stop step surface; 40-cylinder; 50-frame; 51-bottom plate; 52-lower slide plate; 53-upper slide plate; 54-top plate; 55-first guide column; 56-linear bearing; 57-second guide column; 58-actuating compression spring; 59-limiting shaft; 200-functional component; 201-outer sleeve; 202-inner sleeve; 203-spring; 204-spring seat; 205-retaining ring; 206-annular groove. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0052] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0053] The embodiment of the utility model discloses a retaining ring 205 assembly device, which is used to install the retaining ring 205 into the annular groove 206 of the functional component 200. The functional component 200 is the component to be assembled. The functional component 200 can be as follows: Figure 1 The clutch shown may also be other components with similar structure to the clutch. The functional component 200 mainly includes: an outer sleeve 201, an inner sleeve 202, a spring 203, a spring seat 204 and a retaining ring 205. The structure of the functional component 200 in the assembled state is: the inner end of the inner sleeve 202 extends into the inner hole of the outer sleeve 201, the outer end of the inner sleeve 202 is located outside the outer sleeve 201, the spring 203 is located in the outer sleeve 201 and sleeved outside the inner sleeve 202, and the retaining ring 205 is clamped in the annular groove 206 at the outer end of the inner hole of the outer sleeve 201 to limit the spring seat 204, so that the spring seat 204 presses the outer end of the spring 203 into the inner hole of the outer sleeve 201. The assembly device disclosed in the utility model is dedicated to automatically loading the retaining ring 205 into the annular groove 206 of the outer sleeve 201 instead of manually loading the retaining ring 205 into the annular groove 206 using needle-nosed pliers.

[0054] It should be noted that:

[0055] In the present invention, the ends of the outer sleeve 201, the inner sleeve 202, and the spring 203 are named as the inner end and the outer end, which is named based on the assembly relationship of each functional component 200. Since the functional component 200 can be in a vertical state or a horizontal state when in use, it is not appropriate to name the ends of these components as the upper end and the lower end. For the components of the assembly device, since their actual use state is a vertical state, it is more appropriate to name the ends of each component as the upper end and the lower end.

[0056] like Figures 2 to 8 As shown, the assembly device includes: a frame 50, a positioning seat 20, a guide seat 30, a press-fitting component 10 and a driving mechanism.

[0057] The frame 50 includes: a bottom plate 51, a lower plate 52, an upper plate 53, a top plate 54, a first guide post 55, a second guide post 57 and an actuating compression spring 58. The first guide post 55 is vertically installed between the bottom plate 51 and the top plate 54, the lower plate 52 is located above the bottom plate 51, the upper plate 53 is located above the lower plate 52 and below the top plate 54, the first guide post 55 passes through the lower plate 52 and the upper plate 53 and through the linear bearing 56, the upper plate 53, the lower plate 52 and the first guide post 55 are slidably matched, so that the upper plate 53 and the lower plate 52 can slide vertically. A limit shaft 59 is installed on the lower plate 52, and when the upper plate 53 moves downward relative to the lower plate 52, the limit shaft 59 is used to limit the minimum distance between the upper plate 53 and the lower plate 52.

[0058] The second guide post 57 is installed at the bottom of the upper slide 53. The lower end of the second guide post 57 passes through the lower slide 52 and makes the lower slide 52 slide in sliding cooperation with the second guide post 57. The lower end of the second guide post 57 is installed with a stopper to limit the lower slide 52 from being disengaged from the second guide post 57. The actuating compression spring 58 is preferably a cone spring, which is sleeved outside the second guide post 57 and between the upper slide 53 and the lower slide 52. In this way, the upper slide 53 can drive the lower slide 52 to move, and the upper slide 53 can move downward relative to the lower slide 52 by overcoming the actuating compression spring 58.

[0059] A cylinder 40 is selected as the driving mechanism, and a double-stage cylinder is further preferred as the driving mechanism. The cylinder 40 is installed above the top plate 54, and the piston rod of the cylinder 40 passes through the top plate 54 and is connected to the upper slide plate 53, so that the cylinder 40 can drive the upper slide plate 53 to move vertically, and then drive the lower slide plate 52 to move vertically.

[0060] The positioning sleeve is arranged in the middle of the base plate 51. Before assembling the retaining ring 205, the outer sleeve 201 of the functional component 200 is placed in the positioning sleeve, the inner end of the inner sleeve 202 of the functional component 200 is inserted into the outer sleeve 201, and the outer end of the inner sleeve 202 extends out of the outer sleeve 201. The inner end of the spring 203 is installed in the outer sleeve 201 and sleeved outside the inner sleeve 202, and the outer end of the spring 203 extends out of the outer sleeve 201. The spring seat 204 is placed on the outer end of the spring 203, and the retaining ring 205 is placed on the spring seat 204.

[0061] The guide seat 30 is installed on the lower slide plate 52, and the guide seat 30 is located below the lower slide plate 52. The guide seat 30 has an axially through-going tapered hole 31, and the tapered hole 31 is coaxial with the outer sleeve 201 and the inner sleeve 202 of the functional component 200. A stop step surface 32 is provided at the bottom of the guide seat 30, and the tapered hole 31 passes through the stop step surface 32. The tapered hole 31 is a tapered hole 31 that is larger at the top and smaller at the bottom, and the aperture of the lower end of the tapered hole 31 is equal to or slightly smaller than the aperture of the inner hole of the outer sleeve 201.

[0062] like Figure 3 Combined with Figure 2 and Figure 4 As shown, the press-fitting component 10 is installed at the lower part of the upper slide plate 53, and the press-fitting component 10 includes an outer press head 12 and an inner press head 11. The outer press head 12 is located at the radial periphery of the inner press head 11. The outer press head 12 and the inner press head 11 are coaxial with the tapered hole 31 of the guide seat 30, and the outer press head 12 is opposite to the retaining ring 205 in the circumferential direction, and the inner press head 11 is opposite to the end face of the spring seat 204 on the radial inner side of the retaining ring 205. In addition, the lower end of the inner press head 11 is lower than the lower end of the outer press head 12, and the diameter of the circle defined by the outer side of the outer press head 12 is smaller than the aperture of the upper end of the tapered hole 31, so that when the press-fitting component 10 moves downward, both the outer press head 12 and the inner press head 11 can enter the tapered hole 31 from the upper end of the tapered hole 31, and the inner press head 11 will first push against the spring seat 204, and then the outer press head 12 will push against the retaining ring 205.

[0063] In the process of installing the retaining ring 205 into the annular groove 206 of the inner hole of the outer sleeve 201, the cylinder 40 drives the upper slide plate 53 to generate two sequential displacements by using the piston rod.

[0064] When the cylinder 40 drives the upper slide plate 53 to move downward in the first displacement, the upper slide plate 53 drives the lower slide plate 52 to move downward synchronously through the actuating compression spring 58, and the lower slide plate 52 drives the guide seat 30 to move downward. Figure 5 and Figure 6 As shown, the outer end of the inner sleeve 202 of the functional component 200 and the outer end of the spring 203 enter the tapered hole 31, and the lower slide plate 52 stops moving downward after the upper end of the outer sleeve 201 abuts against the stop step surface 32. Thereafter, the spring seat 204 and the retaining ring 205 are placed on the outer end of the spring 203 from the upper end of the tapered hole 31 in sequence.

[0065] Then, the cylinder 40 drives the upper slide plate 53 to move downward in the second displacement. At this time, the lower slide plate 52 is stopped and no longer moves downward, so that the upper slide plate 53 moves downward relative to the lower slide plate 52. Figure 7 and Figure 8As shown, during the downward movement of the upper slide plate 53, the inner pressure head 11 and the outer pressure head 12 sequentially enter the tapered hole 31 of the guide seat 30, and then the lower end of the inner pressure head 11 first contacts the upper end surface of the spring seat 204 located inside the retaining ring 205 and pushes downward against the spring seat 204, and then the lower end of the outer pressure head 12 contacts the retaining ring 205 and pushes downward against the retaining ring 205. During the downward movement of the retaining ring 205, the aperture of the tapered hole 31 is deformed, and the hole wall of the tapered hole 31 forces the retaining ring 205 to contract radially. When the retaining ring 205 is pushed to the lower end of the tapered hole 31, the outer diameter of the retaining ring 205 contracts to a degree equal to or slightly smaller than the inner hole of the outer sleeve 201. At this time, the inner pressure head 11 has pushed the spring seat 204 to the inner hole of the outer sleeve 201. The retaining ring 205 is continuously pushed against, and the outer diameter of the retaining ring 205 is reduced to a degree equal to or slightly smaller than the inner hole of the outer sleeve 201, so that the retaining ring 205 can be smoothly pushed against the inner hole of the outer sleeve 201. When the retaining ring 205 continues to move downward and reaches the axial position where the annular groove 206 is located, the retaining ring 205 elastically expands and is clamped in the annular groove 206. At this time, the upper slide plate 53 is basically against the upper end surface of the limiting shaft 59 and is stopped by the limiting shaft 59, thereby limiting the further downward movement of the press-fitting component 10. Subsequently, the cylinder 40 drives the upper slide plate 53 to drive the press-fitting component 10 to move upward, and the actuating compression spring 58 is elastically reset, and then drives the lower slide plate 52 to move upward, thereby driving the guide seat 30 to move upward and away from the outer sleeve 201, so that the installation of the retaining ring 205 is completed.

[0066] The external pressure head 12 and the internal pressure head 11 may have various structures. For example, the external pressure head 12 and the internal pressure head 11 may be solid sleeve-shaped structures, and the lower end surface of the sleeve-shaped structure is used to push the retaining ring 205 and the spring seat 204.

[0067] A preferred embodiment of the present invention provides a structure of an external pressure head 12 and an internal pressure head 11, specifically, as follows Figure 3 As shown, the outer pressure head 12 includes a plurality of outer push bars 121 arranged at intervals in the circumferential direction, and these outer push bars 121 can be obtained by removing material (e.g., cutting) from the sleeve wall of the sleeve body, and the inner pressure head 11 includes a plurality of inner push bars 111 arranged at intervals in the circumferential direction, and these inner push bars 111 can also be obtained by removing material from the sleeve wall of the sleeve body; and the circumferential position of each outer push bar 121 corresponds to the gap between two adjacent inner push bars 111, and the diameter of the circle formed by the outer sides of the plurality of outer push bars 121 is smaller than the aperture of the lower end of the tapered hole 31. In this way, as Figure 8As shown in the figure, in the process of the outer pressure head 12 pushing the retaining ring 205 downward, the hole wall of the tapered hole 31 forces the outer push strip 121 to deform radially inward, so that the outer push strip 121 moves downward in a state of being attached to the hole wall of the tapered hole 31. At this time, because the tapered hole 31 forces the retaining ring 205 to shrink, the retaining ring 205 also moves downward in a state of being attached to the hole wall of the tapered hole 31. This makes: the lower end of the outer pressure head 12 shrinks synchronously with the retaining ring 205, so that the retaining ring 205 can be accurately pushed against without being in contact with the retaining ring 205. 05 forms a radial misalignment, which is suitable for installing a retaining ring 205 with a smaller difference between the inner diameter and the outer diameter, such as a wire retaining ring 205. Another important aspect is that when the outer push strip 121 produces a larger radial deformation due to the retaining ring 205 being pushed against the hole section close to the lower end of the tapered hole 31, the outer push strip 121 will not interfere with the inner push strip 111 because it corresponds to the gap between the two inner push strips 111, so that the press-fitting component 10 can install a retaining ring 205 with a smaller inner and outer diameter difference. Therefore, the press-fitting component 10 of the above structure can automatically install the retaining ring 205 with a smaller inner and outer diameter difference into the annular groove 206 through the narrower gap between the outer sleeve 201 and the inner sleeve 202. Preferably, a circular arc notch 1213 is provided at the root of the outer push strip 121 so that the outer push strip 121 has better deformation compliance. The push strip 121 includes a main body 1212 and a thickened portion 1211 formed at the lower end of the main body 1212 . The thickened portion 1211 is thicker than the main body 1212 , which helps to improve the conformability of the shape of the push strip 121 without reducing the stability of the push-retaining ring 205 .

[0068] In addition, although exemplary embodiments have been described in the present invention, the scope includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in this specification or during the implementation of this application, and the examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0069] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the utility model. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the utility model may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently used as a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of the utility model should be determined with reference to the attached claims and the full scope of equivalent forms granted by these claims.

[0070] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A retaining ring assembly device, which is used to install the retaining ring into an annular groove of a functional component, wherein the functional component comprises an outer sleeve, an inner sleeve whose inner end extends into the inner hole of the outer sleeve, a spring sleeved on the inner sleeve and located in the outer sleeve, and a spring seat for pressing the outer end of the spring, the outer end of the inner hole of the outer sleeve has an annular groove, and the retaining ring limits the spring seat by being installed in the annular groove; It is characterized in that The retaining ring assembly device comprises: A positioning seat, on which the outer sleeve is vertically placed, and into which the inner sleeve is inserted; A guide seat, which is located above the positioning seat and can move vertically; A press-fitting component, which is located above the guide seat and can move vertically; A driving mechanism, which is used to drive the guide seat and the press-fitting component to move vertically; wherein: The guide seat has a vertically penetrating tapered hole, the radial dimension of the lower end of the tapered hole is less than or equal to the radial dimension of the inner hole of the outer sleeve, after the guide seat moves downward, the lower end of the tapered hole is butted against the outer sleeve, and the outer end of the inner sleeve and the outer end of the spring are both extended into the tapered hole, the spring seat is placed on the outer end of the spring, and the retaining ring is placed on the spring seat; The press-fitting component comprises an inner pressure head corresponding to the radial inner side of the spring seat and an outer pressure head corresponding to the retaining ring, wherein the outer pressure head is radially located outside the inner pressure head, and the lower end of the inner pressure head is lower than the lower end of the outer pressure head, so that when the driving mechanism drives the press-fitting component to move downward, the inner pressure head first pushes the spring seat downward and then the outer pressure head pushes the retaining ring downward; When the outer pressure head pushes the retaining ring to slide downward along the tapered hole, the wall of the tapered hole forces the retaining ring to contract radially, so that the retaining ring enters the inner hole of the outer sleeve and expands and is clamped in the annular groove when it reaches the annular groove.

2. The retaining ring assembly device according to claim 1, characterized in that: The external pressure head comprises a plurality of external push bars arranged at intervals in the circumferential direction, and the lower ends of the plurality of external push bars are flush with each other; the internal pressure head comprises a plurality of internal push bars arranged at intervals in the circumferential direction, and the lower ends of the plurality of internal push bars are flush with each other; wherein: Each of the extrapolation bars corresponds to the gap between two adjacent inner push bars; The radial dimension of the lower end of the tapered hole is smaller than the radial dimension of the circle enclosed by the radial outer side of the push strip. Therefore, when the external pressure head pushes the retaining ring downward, the hole wall of the tapered hole forces the push strip to deform radially inward, causing the push strip to move down while adhering to the hole wall of the tapered hole.

3. The retaining ring assembly device according to claim 2, characterized in that: The extrapolation strip includes a main body and a thickened portion formed at a lower end of the main body, wherein the thickened portion is thicker than the main body.

4. The retaining ring assembly device according to claim 2, characterized in that: The retaining ring comprises a wire retaining ring.

5. The retaining ring assembly device according to claim 1, characterized in that: A stop step surface is disposed at the bottom of the guide seat, the lower end of the tapered hole penetrates through the stop step surface, and the outer end of the outer sleeve abuts against the stop step surface.

6. The retaining ring assembly device according to claim 1, characterized in that: The retaining ring assembly device also includes a frame; The frame comprises: A bottom plate, the positioning seat is installed on the bottom plate; A first guide column, which is vertically mounted on the bottom plate; A lower slide plate, which is located above the bottom plate and slidably cooperates with the first guide column, and the guide seat is installed on the lower slide plate; An upper slide plate, which is located above the lower slide plate and is slidably matched with the first guide column, and the press-fitting component is installed on the upper slide plate; A second guide column is vertically mounted on the upper slide plate and passes through the lower slide plate; An actuating compression spring is sleeved on the second guide post; wherein: The driving mechanism comprises a cylinder, the cylinder is located above the upper slide plate and a piston rod of the cylinder is connected to the upper slide plate; The piston rod of the cylinder has a first driving displacement and a second driving displacement. When the upper slide plate is driven within the first driving displacement, the upper slide plate drives the lower slide plate to move downward through the actuating compression spring so that the guide seat and the outer sleeve are docked. When the upper slide plate is continued to be driven within the second driving displacement, the upper slide plate forces the actuating compression spring to be compressed and move downward relative to the lower slide plate, so that the press-fit component moves downward relative to the guide seat and enters the tapered hole.

7. The retaining ring assembly device according to claim 6, characterized in that: A vertical limiting shaft is arranged on the lower sliding plate, and the limiting shaft is used to limit the distance between the upper sliding plate and the lower sliding plate after the upper sliding plate moves downward.

8. The retaining ring assembly device according to claim 2, characterized in that: The plurality of circumferentially arranged outer push strips and the plurality of circumferentially arranged inner push strips are obtained by cutting materials from the sleeve.

9. The retaining ring assembly device according to claim 8, characterized in that: The root of the extrapolation strip is provided with an arc notch.

10. The retaining ring assembly device according to claim 6, characterized in that: The actuating compression spring is a conical column spring.

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