A clip spring mounting device

Abstract

The application relates to the technical field of part mounting, in particular to a clamp spring mounting device, wherein the pressing assembly comprises a guide cylinder and a pressing head; a feeding unit can carry the clamp spring to a clamping position at a set angle; the clamping jaw comprises a clamping seat, a plurality of movable arc bodies and a second driving assembly; the first end of the movable arc body is hinged to the clamping seat; the second driving assembly can drive the clamping jaw to switch between a first state and a second state, so as to transfer the clamp spring into the guide cylinder; a limiting groove is arranged on the outer circumferential surface of the movable arc body; a plurality of limiting grooves are sequentially connected and arranged around the clamping jaw to form a limiting ring; the inner annular surface of the clamp spring can abut against the limiting groove; the limiting ring comprises an upper annular surface and a lower annular surface; the upper annular surface comprises an adjusting part corresponding to the opening of the clamp spring; the upper annular surface gradually moves away from the lower annular surface during the extension process of the adjusting part. In this way, the problem that the two sides of the opening of the clamp spring cannot be overlapped and staggered during the clamp spring mounting process is solved, and the problem that the device is further jammed and the efficiency is reduced is further solved.

Description

Technical Field

[0001] This invention relates to the field of parts mounting technology, and more specifically, to a snap ring mounting device. Background Technology

[0002] Bearings are essential components widely used in various industrial equipment, typically consisting of an inner ring, an outer ring, rolling elements, and retaining rings. The rolling elements and cage can be positioned between the outer circumferential surface of the inner ring and the inner circumferential surface of the outer ring. The rolling elements experience rolling friction with both the inner and outer rings. The retaining rings are located on both sides of the outer ring to maintain the rolling elements' movement within the inner and outer rings. Bearings support rotating mechanical parts, reduce the coefficient of friction during their movement, and ensure rotational accuracy, making them a key factor in ensuring smooth equipment operation.

[0003] Currently, in the bearing assembly process, the inner ring, outer ring, and rolling elements need to be sequentially installed into the positioning mold, then the retaining circlip shrink sleeve is placed on top, the retaining circlip is then inserted into the retaining circlip shrink sleeve, and finally, a pressure device is used to press the retaining circlip into the bearing to complete the assembly. Existing newer retaining circlips have smaller openings. To ensure proper installation, the two ends of the retaining circlip opening need to be overlapped and staggered during operation. However, existing installation devices often cause the two sides of the opening to abut each other during retraction, preventing complete retraction and resulting in device jamming and low efficiency. Summary of the Invention

[0004] To address the problem of overlapping and misalignment of the two sides of the opening during snap ring installation, which leads to device jamming and reduced efficiency, this invention provides a snap ring installation device, comprising: a feeding assembly, a pressing assembly, and a positioning assembly; the positioning assembly is used to fix the part to be installed, the part to be installed includes a snap ring mounting portion, the snap ring mounting portion includes a cylindrical body with its opening facing the pressing assembly and a snap ring groove disposed on the inner circumferential surface of the cylindrical body; the pressing assembly includes a guide cylinder and a pressing head, the guide cylinder includes a guide cavity, the diameter of which gradually decreases as it extends from top to bottom, the pressing head can move along the extension direction of the guide cylinder, and the snap ring mounting portion is disposed at the outlet end of the guide cylinder; the feeding assembly includes a feeding unit and a clamping unit, the feeding unit can transport the snap ring to be installed to a set angle to the clamping position, and the clamping unit includes a gripper and a first drive assembly. The gripper includes a gripping seat, multiple movable arc bodies, and a second drive assembly. The first end of each movable arc body is hinged to the gripping seat. The gripper has a first state and a second state. In the first state, the second ends of the multiple movable arc bodies converge and can extend into the inner ring of the snap ring. In the second state, the second ends of the multiple movable arc bodies move away from each other and are supported within the inner ring surface of the snap ring. The second drive assembly can drive the gripper to switch between the first state and the second state. The first drive assembly can drive the gripper to move between a predetermined position and a guide cylinder to transfer the snap ring into the guide cylinder. A limiting groove is provided on the outer circumferential surface of the movable arc body. Multiple limiting grooves are connected in sequence and surround the gripper to form a limiting ring. The inner ring surface of the snap ring can abut against the limiting groove. The limiting ring includes an upper ring surface and a lower ring surface. The upper ring surface includes an adjustment part corresponding to the opening of the snap ring. As the upper ring surface extends towards the adjustment part, it gradually moves away from the lower ring surface.

[0005] In some embodiments, the bottom surface of the pressure head includes a first abutting portion and a second abutting portion. The first abutting portion is capable of abutting a first side of the snap ring opening, and the second abutting portion is capable of abutting a second side of the snap ring opening. The first abutting portion is lower than the second abutting portion.

[0006] In some embodiments, the bottom surface of the pressure head is configured to gradually rise as it extends from the first abutment portion to the second abutment portion.

[0007] In some embodiments, the pressure head includes an inner pressure head and an outer pressure head coaxially arranged, and also includes a third drive assembly. The outer pressure head is at least partially arranged around the inner pressure head. A first abutment portion and a second abutment portion are disposed on the lower side surface of the outer pressure head. Both the inner and outer pressure heads can abut against the upper side surface of the retaining ring. The diameter of the outer pressure head is larger than the lower end diameter of the guide cavity, and the diameter of the inner pressure head is less than or equal to the lower end diameter of the guide cavity. The pressure head includes a third state and a fourth state. In the third state, the bottom end of the outer pressure head is lower than the bottom end of the inner pressure head. In the fourth state, the bottom end of the inner pressure head can extend through the lower opening of the guide cavity. The third drive assembly can drive the pressure head to switch between the third state and the fourth state.

[0008] In some embodiments, the bottom surface of the inner pressure head is designated as a first side corresponding to the snap ring opening and a second side corresponding to the side away from the snap ring opening. The bottom surface of the inner pressure head is configured to gradually extend downwards during the extension process from the first side to the second side.

[0009] In some embodiments, the third drive assembly includes a third driver and an elastic element. The third driver is capable of driving the inner pressure head to move vertically, and the elastic element is disposed between the outer pressure head and the inner pressure head. The elastic element is capable of pushing the outer pressure head to move downward.

[0010] In some embodiments, the first drive assembly drives the gripper to move above the guide cylinder, causing the central axis of the gripper to shift relative to the central axis of the guide cylinder in the direction of the snap ring opening.

[0011] In some embodiments, the feeding unit includes a fixed plate, a pusher plate, and a fourth driving component. The fixed plate is provided with a guide groove, and the pusher plate is provided with a pusher groove for placing a snap ring. The pusher plate is disposed in the guide groove, and the fourth driving component can drive the pusher plate to move along the extension direction of the guide groove. The first end of the guide groove is the feeding position.

[0012] In some embodiments, the feeding assembly further includes a storage unit disposed on a fixed plate. The storage unit includes a storage rod disposed at the second end of a guide groove. The storage rod extends vertically. Snap rings can be sequentially sleeved on the storage rod. A guide strip is disposed on the storage rod. The guide strip matches the snap ring opening and can sequentially pass through the openings of multiple snap rings.

[0013] In some embodiments, the pusher plate can be moved to the bottom of the storage chamber, the length of the pusher plate is greater than the distance between the storage rod and the feeding position, and the depth of the pusher groove matches the thickness of the retaining spring.

[0014] To address the problem that the two sides of the opening cannot overlap during snap ring installation, leading to device jamming and reduced efficiency, this invention offers the following advantages:

[0015] In the above technical solution, the positioning component is used to install the part to be installed at the outlet end of the guide cylinder. The inner side of the guide cylinder is an inverted conical surface. As the pressure head pushes the retaining ring to move along the guide cylinder, it can be gradually compressed and tightened. The feeding component is used to transfer the retaining ring to be installed into the guide cylinder. The gripper includes multiple movable arc bodies hinged to the clamping seat, so that the movable arc bodies can rotate relative to the clamping seat. That is, the movement trajectory of the end away from the clamping seat is arc-shaped. Therefore, when it extends into the inner ring of the retaining ring and opens to grasp it, it can also apply an upward force to the retaining ring, so that the retaining ring will move towards the inner ring during the clamping process. The upward movement of the retaining ring is limited by the upper ring surface, which restricts its unrestricted upward movement. Furthermore, the upper ring surface gradually moves away from the lower ring surface as it extends towards the adjustment section, meaning the entire structure gradually tilts upward from the side furthest from the retaining ring opening towards the retaining ring opening. This allows the retaining ring to tilt upward at its opening after being gripped by the jaws, enabling it to fall into the guide cylinder in this posture. When the pressure head pushes the retaining ring to move and compress it, it first contacts the retaining ring opening, causing the opening to compress first. This makes it easier for the two ends of the retaining ring opening to overlap, thus preventing jamming. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a snap ring mounting device according to one embodiment is shown;

[0017] Figure 2 A schematic diagram of the structure of a snap ring to be installed according to one embodiment is shown;

[0018] Figure 3 A schematic diagram of the structure of a storage unit and a feeding unit according to one embodiment is shown;

[0019] Figure 4 A schematic diagram of the structure of a clamping unit according to one embodiment is shown;

[0020] Figure 5 A schematic diagram of the gripper structure of one embodiment is shown;

[0021] Figure 6 A schematic diagram of the structure of a pressing assembly according to one embodiment is shown;

[0022] Figure 7 A schematic cross-sectional view of the pressure head of one embodiment is shown;

[0023] Figure 8 A schematic diagram of an external pressure head structure according to one embodiment is shown;

[0024] Figure 9 A schematic diagram of the structure of a feeding unit according to one embodiment is shown;

[0025] Figure 10A partial structural schematic diagram of a storage unit according to one embodiment is shown.

[0026] Reference numerals: 10-Feeding assembly; 11-Feeding unit; 111-Fixing plate; 1111-Guide groove; 112-Pushing plate; 1121-Pushing groove; 113-Fourth drive assembly; 12-Clamping unit; 121-Gripper; 1211-Clamping seat; 1212-Moving arc body; 1213-Limiting groove; 12131-Upper annular surface; 12132-Lower annular surface; 1214-Second drive assembly; 122-First drive assembly; 1 221-Horizontal actuator; 1222-Vertical actuator; 13-Material storage unit; 131-Material storage rod; 132-Guide bar; 20-Pressure assembly; 21-Guide cylinder; 211-Guide cavity; 22-Pressure head; 221-Outer pressure head; 2211-First abutment part; 2212-Second abutment part; 222-Inner pressure head; 23-Third drive assembly; 231-Third actuator; 232-Elastic element; 40-Snap ring; 41-Snap ring opening. Detailed Implementation

[0027] 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.

[0028] 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 this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being 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 application according to the specific circumstances. In addition, the terms "installed", "set up", "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 application 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.

[0029] This embodiment discloses a retaining ring 40 mounting device, such as Figures 1 to 10As shown, the device may include: a retaining ring 40 mounting device comprising: a feeding assembly 10, a pressing assembly 20, and a positioning assembly; the positioning assembly is used to fix the part to be installed, the part to be installed including a retaining ring 40 mounting part, the retaining ring 40 mounting part including a cylindrical body with an opening facing the pressing assembly 20 and a retaining ring 40 groove disposed on the inner circumferential surface of the cylindrical body; the pressing assembly 20 includes a guide cylinder 21 and a pressing head 22, the guide cylinder 21 including a guide cavity 211, the guide cavity 211 being configured such that its diameter gradually decreases as it extends from top to bottom. The pressure head 22 can move along the extension direction of the guide cylinder 21, and the retaining spring 40 mounting part is provided at the outlet end of the guide cylinder 21; the feeding assembly 10 includes a feeding unit 11 and a clamping unit 12. The feeding unit 11 can transport the retaining spring 40 to be installed to a set angle to the clamping position. The clamping unit 12 includes a gripper 121 and a first drive assembly 122. The gripper 121 includes a clamping seat 1211, a plurality of movable arc bodies 1212 and a second drive assembly 1214. The first end of the movable arc body 1212 is hinged to the... On the clamping seat 1211, the gripper 121 includes a first state and a second state. In the first state, the second ends of multiple movable arc bodies 1212 converge and can extend into the inner ring of the retaining spring 40. In the second state, the second ends of multiple movable arc bodies 1212 move away from each other and are supported within the inner ring surface of the retaining spring 40. The second drive assembly 1214 can drive the gripper 121 to switch between the first state and the second state. The first drive assembly 122 can drive the gripper 121 to move between a predetermined position and the guide cylinder 21. The retaining ring 40 is transferred into the guide cylinder 21. A limiting groove 1213 is provided on the outer peripheral surface of the movable arc body 1212. Multiple limiting grooves 1213 are connected in sequence and arranged around the gripper 121 to form a limiting ring. The inner ring surface of the retaining ring 40 can abut against the limiting groove 1213. The limiting ring includes an upper ring surface 12131 and a lower ring surface 12132. The upper ring surface 12131 includes an adjustment part corresponding to the retaining ring opening 41. As the upper ring surface 12131 extends toward the adjustment part, it gradually moves away from the lower ring surface 12132.

[0030] In the above technical solution, the positioning component is used to install the part to be installed at the outlet end of the guide cylinder 21. The inner side of the guide cylinder 21 is an inverted conical surface. As the pressure head 22 pushes the retaining spring 40 to move along the guide cylinder 21, it can be gradually compressed and tightened. The feeding component 10 is used to transfer the retaining spring 40 to be installed into the guide cylinder 21. For example, Figure 4-5As shown, the gripper 121 includes multiple movable arc bodies 1212 hinged to the gripping seat 1211, allowing the movable arc bodies 1212 to rotate relative to the gripping seat 1211. Specifically, the end moving away from the gripping seat 1211 has an arc-shaped trajectory. Therefore, when it extends into the inner ring of the retaining spring 40 and opens to grip, it can also apply an upward force to the retaining spring 40, causing it to move upward during clamping. The limiting groove 1213, on the one hand, restricts the unrestricted upward movement of the retaining spring 40, limiting it to the upper ring surface 12131. On the other hand, since the upper ring surface 12131 is designed to extend towards the adjustment part... During the process, it gradually moves away from the lower annular surface 12132, that is, the whole body gradually tilts upward from the side away from the snap ring opening 41 to the side of the snap ring opening 41. This makes the snap ring 40 tilt upward at the snap ring opening 41 after it is grasped by the gripper 121. When the gripper 121 releases the snap ring 40, the action is fast and the falling distance is small, so that the snap ring 40 can fall into the guide cylinder 21 in an upward tilted posture at the snap ring opening 41. Then, when the pressure head 22 pushes the snap ring 40 to move and compress it, it can first contact the snap ring opening 41, so that the snap ring opening 41 starts to compress first, making it easier for the two ends of the snap ring opening 41 to overlap, thereby preventing jamming.

[0031] It should be noted that the snap ring 40 to be installed can be as follows: Figure 2 As shown, its structure is annular with an opening. The opening can extend radially or form an angle with the radial direction. The openings can be close to each other, and in some specific structures, the two ends of the opening can overlap to further reduce the diameter. Additionally, the positioning component can fix and support the part to be installed in an appropriate manner. It can include various implementations, specifically, a support or fixing structure, or a robotic arm that automatically grips and fixes the product. The outlet end of the guide cylinder 21 can be directly connected to the opening of the cylinder body of the part to be installed, so that the retaining spring 40 can be pushed out of the guide cylinder 21 and directly enter the cylinder body, thus preventing the retaining spring 40 from flying out after losing the constraint of the guide cylinder 21. Since the gripper 121 adjusts the retaining spring 40 to an upward tilted state after gripping and grasping it, when the gripper 121 places it into the guide cylinder 21, it can also extend into the guide cylinder 21. After the retaining spring 40 is placed and stabilized in an upward tilted position, the gripper 121 is brought together and extends out from the inner ring of the retaining spring 40. Figure 3 , Figure 4As shown, the first drive assembly 122 includes a vertical driver 1222, which drives the gripper 121 to move vertically so that the gripper 121 can grasp and place the retaining ring 40. The first drive assembly 122 also includes a horizontal driver 1221, which drives the gripper 121 to move between the clamping position and the guide cylinder 21. In one embodiment, the second drive assembly 1214 can be a balloon disposed on the clamping seat 1211, with movable arc bodies 1212 arranged in a ring and fixed on the outer circumferential surface of the balloon. Inflating or deflating the balloon drives the movable arc bodies 1212 to switch between a first state and a second state.

[0032] The tilt angle of the snap ring 40 can be set to 5°~10°. In one embodiment, the upper ring surface 12131 can be provided only on the side of the snap ring 40 away from the snap ring opening 41. That is, the upper ring surface 12131 corresponding to the snap ring opening 41 can be without the limiting groove 1213, so that the snap ring opening 41 is not limited by the upper ring surface 12131 and tilts upward as much as possible.

[0033] To ensure that the two ends of the snap ring opening 41 can overlap more smoothly, such as Figure 6 , Figure 7 , Figure 8 As shown, the bottom surface of the pressure head 22 includes a first abutting part 2211 and a second abutting part 2212. The first abutting part 2211 can abut against the first side of the snap ring opening 41, and the second abutting part 2212 can abut against the second side of the snap ring opening 41. The first abutting part 2211 is lower than the second abutting part 2212.

[0034] The snap ring opening 41 is the overlapping part, that is, the two sides of the snap ring opening 41 overlap. Therefore, the bottom surface of the pressure head 22 forms a first abutment part 2211 and a second abutment part 2212 with a height difference corresponding to the first side and the second side, respectively. This allows the pressure head 22 to first contact one side of the snap ring opening 41 and push it downward. When the second abutment part 2212 contacts the second side of the snap ring opening 41, the first side of the snap ring opening 41 has already moved downward a certain distance under the pressure and caused the snap ring 40 to begin to contract. On this basis, when the pressure head 22 continues to push the snap ring 40 along the guide cylinder 21, the first side of the snap ring opening 41 that was pressed down first can remain lower than the second side. When the snap ring 40 is pushed and continues to contract, the first side can enter below the second side, thereby ensuring that the two sides of the snap ring opening 41 can overlap smoothly.

[0035] Furthermore, to ensure that the pressure head 22 can fully engage with the retaining ring 40, such as Figure 8As shown, the bottom surface of the pressure head 22 is designed to gradually rise as it extends from the first abutment portion 2211 to the second abutment portion 2212. As the pressure head 22 gradually moves downwards during the pushing process, its bottom surface first contacts the upwardly inclined snap ring opening 41 of the snap ring 40, and then gradually comes into contact with the snap ring 40 during subsequent movements, thereby applying a downward pushing force to the entire snap ring 40. Designing the bottom surface to gradually rise as it extends from the first abutment portion 2211 to the second abutment portion 2212 allows the bottom surface to form a complete and continuous spiral surface or spiral curved surface (which can be selected according to the actual situation), thus ensuring that the bottom surface of the pressure head 22 can completely contact the snap ring 40.

[0036] Because the guide cylinder 21 has a gradually tapering structure, in order to ensure that the pressure head 22 can fully abut against and push the retaining spring 40, while also being able to push the retaining spring 40 out of the guide cylinder 21 and press it into the retaining spring 40 mounting part of the part, such as... Figure 7 , Figure 8 As shown, the pressure head 22 includes an inner pressure head 222 and an outer pressure head 221 coaxially arranged, and also includes a third drive assembly 23. The outer pressure head 221 is at least partially arranged around the inner pressure head 222. A first abutment portion 2211 and a second abutment portion 2212 are disposed on the lower side of the outer pressure head 221. Both the inner pressure head 222 and the outer pressure head 221 can abut against the upper side of the retaining ring 40. The diameter of the outer pressure head 221 is larger than the lower end diameter of the guide cavity 211, and the diameter of the inner pressure head 222 is less than or equal to the lower end diameter of the guide cavity 211. The pressure head 22 includes a third state and a fourth state. In the third state, the bottom end of the outer pressure head 221 is lower than the bottom end of the inner pressure head 222. In the fourth state, the bottom end of the inner pressure head 222 can extend through the lower opening of the guide cavity 211. The third drive assembly 23 can drive the pressure head 22 to switch between the third state and the fourth state.

[0037] Specifically, the inner pressure head 222 and the outer pressure head 221 can move relative to each other. Before the pressure head 22 contacts the retaining ring 40, and in the initial stage of contact with the retaining ring 40, the outer pressure head 221 contacts and abuts against the retaining ring 40, allowing the retaining ring 40 to begin retracting smoothly. Since the diameter of the outer pressure head 221 is larger than the lower diameter of the guide cavity 211, the outer pressure head 221 is stuck by the inner circumferential surface of the guide cavity 211 and its movement is restricted. At this time, the inner pressure head 222 can continue to move downwards relative to the outer pressure head 221 and protrude beyond the end face of the outer pressure head 221. At this point, the diameter of the retaining ring 40 has retracted to a point where it can be abutted by the inner pressure head 222. In the case where the two sides of the snap ring opening 41 have already overlapped, even if the snap ring 40 is pushed by the inner pressure head 222 with the help of the circumferential restriction of the guide cylinder 21, it will not disengage and can continue to retract and enter the snap ring 40 mounting part under the push of the inner pressure head 222. The third drive assembly 23 may include at least one component that can drive the inner and outer pressure heads 221 to move relative to each other. It may be an elastic element 232, a slide rail, or a combination of multiple drive structures to play the role of driving and limiting at the same time. This can ensure that the inner pressure head 222 and the outer pressure head 221 move as planned and will not disengage.

[0038] Furthermore, since the retaining ring 40 overlaps on both sides of the opening, this position is relatively thick. The retaining ring 40 groove within the retaining ring 40 mounting section, in order to limit the retaining ring 40, can only accommodate the thickness of one retaining ring 40. To ensure that the retaining ring 40 can smoothly enter the retaining ring 40 groove, such as... Figure 7 As shown, the bottom surface of the inner pressure head 222 is designated as the first side corresponding to the side of the snap ring opening 41, and the bottom surface of the inner pressure head 222 is designated as the second side corresponding to the side away from the snap ring opening 41. The bottom surface of the inner pressure head 222 is configured to gradually extend downwards during the extension process from the first side to the second side.

[0039] In the above scheme, by changing the pushing process of the retaining ring 40 by the inner pressure head 222 and the outer pressure head 221, the retaining ring 40 is changed from being attached to the bottom surface of the outer pressure head 221 to being attached to the bottom surface of the inner pressure head 222. The inclination direction of the bottom surface of the inner pressure head 222 is set to be lower on the side of the retaining ring 40 away from the opening, that is, opposite to the inclination direction of the outer pressure head 221. This allows the inner pressure head 222 to change its position from being lower on the side of the overlapping opening to being lower on the side away from the opening when pushing the retaining ring 40. Therefore, this position is at the inner pressure head 222. Driven by 2, it can first enter the circlip 40 mounting part, and further enter the circlip 40 groove and begin to expand. It is limited by the side wall of the circlip 40 groove. This part can form a guiding effect, so that the inner pressure head 222 continues to push the overlapping opening of the circlip 40 to move into the circlip 40 groove. With the help of the guiding effect of the part that has already entered the circlip 40 groove, the remaining part can smoothly enter the circlip 40 groove, thereby avoiding the situation where the circlip 40 goes too deep into the cylindrical structure of the circlip 40 mounting part and fails to enter the circlip 40 groove.

[0040] In some embodiments, a sliding pin may be provided on the side of the outer pressure head 221 facing the inner pressure head 222, and the inner pressure head 222 may be provided with an elongated limiting groove 1213 extending along the inner pressure head 222. The sliding pin can slide within the limiting groove 1213 to restrict the movement of the outer pressure head 221 relative to the inner pressure head 222 within the length range of the limiting groove 1213. Simultaneously, the length of the limiting groove 1213 can be set according to the distance the inner pressure head 222 needs to extend beyond the outer pressure head 221, preventing the inner pressure head 222 from extending too far. Specifically, as shown... Figure 6 , Figure 7 As shown, the third drive assembly 23 includes a third driver 231 and an elastic member 232. The third driver 231 can drive the inner pressure head 222 to move in the vertical direction. The elastic member 232 is disposed between the outer pressure head 221 and the inner pressure head 222. The elastic member 232 can push the outer pressure head 221 to move downward.

[0041] The elastic element 232 can be an elastic structure such as a spring. The third driver 231 can be connected to the inner pressure head 222 or to both the inner pressure head 222 and the outer pressure head 221 respectively, thereby driving the pressure head 22 to move as a whole and applying a pushing force to the retaining ring 40. The setting of the elastic element 232 keeps the outer pressure head 221 in an extended state relative to the inner pressure head 222 until it is limited by the inner side of the guide cylinder 21, compressing the elastic element 232, thereby causing the inner pressure head 222 to extend out of the outer pressure head 221.

[0042] To further ensure that the snap ring 40 can maintain an upward tilt at the snap ring opening 41 after entering the guide cylinder 21, the first drive assembly 122 drives the gripper 121 to move above the guide cylinder 21, and causes the central axis of the gripper 121 to shift relative to the central axis of the guide cylinder 21 in the direction of the snap ring opening 41.

[0043] When the clamp 121 releases the snap ring 40, its central axis deviates from the central axis of the guide cylinder 21 in the direction of the snap ring opening 41. This means that when the snap ring 40 enters the guide cylinder 21, even if the snap ring 40 becomes horizontal or tilted in the opposite direction due to a failure of the clamp 121 to release, the relative offset of the central axis makes the position of the snap ring opening 41 closer to the inner wall of the guide cavity 211. Therefore, it can first contact the inner wall of the guide cavity 211 and stop moving downward. On the side of the snap ring 40 away from the snap ring opening 41, the distance from the inner wall of the guide cavity 211 is greater. When the snap ring opening 41 has already contacted the inner wall of the guide cavity 211, the other side has not yet contacted the inner wall of the guide cavity 211 and continues to fall downward, thereby further ensuring that the snap ring 40 can be in a state of upward tilt at the snap ring opening 41. Although the retaining ring 40 is initially offset from the central axis of the guide cavity 211, during the pushing process, the retaining ring 40 gradually changes from an inclined state to a flat state. That is, the opening end contracts while the side away from the opening deforms less. This allows the retaining ring 40 to gradually become coaxial with the guide cylinder 21 under the limiting action of the guide cylinder 21 before it continues to be pushed as a whole. Therefore, the retaining ring 40 will not experience positional displacement. During the pushing process, the relative position of the axes of the retaining ring 40 and the guide cylinder 21 can be corrected and made to basically coincide.

[0044] To improve equipment efficiency and enable continuous operation of the feeding unit 11, such as... Figure 9As shown, the feeding unit 11 includes a fixed plate 111, a pusher plate 112, and a fourth drive assembly 113. The fixed plate 111 is provided with a guide groove 1111, and the pusher plate 112 is provided with a push groove 1121 for placing the snap ring 40. The pusher plate 112 is disposed in the guide groove 1111. The fourth drive assembly 113 can drive the pusher plate 112 to move along the extension direction of the guide groove 1111. The first end of the guide groove 1111 is the feeding position. Through the reciprocating motion of the pusher plate 112, the retaining rings 40 to be installed can be pushed sequentially to the set feeding positions to facilitate gripping by the gripper 121. The pusher groove 1121 can accommodate and limit the retaining rings 40. The guide groove 1111 can guide the movement direction of the pusher groove 1121 and the pusher plate 112, making the pusher groove 1121 move smoothly. At the same time, the guide groove 1111 on the fixing plate 111 can also play a limiting role. When the opening of the retaining ring 40 is placed into the pusher groove 1121 in the set direction, the retaining ring 40 will not deviate in angle during the pushing process of the pusher groove 1121, so that it can be transported to the clamping position at the set angle. As an optional implementation, the pusher groove 1121 can also be rotated relative to the retaining ring and is equipped with a sensor for detecting the direction of the retaining ring opening 41. By rotating the pusher groove 1121, the direction of the retaining ring opening 40 can be adjusted simultaneously during movement. Similarly, the clamping spring 40 can be transported to the clamping position at a set angle. At this time, the clamping jaw 121 does not need to be adjusted by rotating or other means, thereby reducing the adjustment parts on the clamping jaw 121. Due to the simplification of the structure, the dimension of the clamping jaw 121 in the height direction can be reduced. Since the clamping jaw 121 needs to be able to enter the gap space between the pressure head 22 and the guide cylinder 21 in the initial position during the transport of the clamping spring 40, so that the clamping jaw 121 can reach the top of the guide cylinder 21, reducing the height dimension of the clamping jaw 121 can reduce the height dimension of the gap space between the clamping jaw 121 and the guide cylinder 21. Since the guide cylinder 21 is fixed and only the pressure head 22 moves in the vertical direction, the reduction of the gap space reduces the moving distance of the pressure head 22. Under the same driving speed, the operation can be carried out faster, thereby improving the operating efficiency of the equipment.

[0045] To further improve feeding efficiency and eliminate the need for angle adjustment of the retaining spring 40, ensuring that the retaining spring 40 can always move to the clamping position at a predetermined angle, such as... Figure 9 , Figure 10 As shown, the feeding assembly 10 also includes a storage unit 13 disposed on the fixed plate 111. The storage unit 13 includes a storage rod 131, which is disposed at the second end of the guide groove 1111. The storage rod 131 extends vertically, and the retaining rings 40 can be sequentially sleeved on the storage rod 131. A guide strip 132 is disposed on the storage rod 131. The guide strip 132 matches the retaining ring opening 41 and can sequentially pass through the openings of multiple retaining rings 40.

[0046] The snap rings 40 to be installed can be stored in the storage unit 13. By sequentially sleeved on the storage rod 131, the snap rings 40 can be stacked vertically. The guide bar 132 is also vertically set and can match the opening of the snap rings 40, thereby guiding the snap rings 40 to be set in the same direction, so that the snap rings 40 are all in the same direction after being taken out.

[0047] Furthermore, such as Figure 9 As shown, the pusher plate 112 can be moved to the bottom of the storage chamber. The length of the pusher plate 112 is greater than the distance between the storage rod 131 and the feeding position. The depth of the pusher groove 1121 matches the thickness of the retaining spring 40. When the pusher plate 112 moves to the bottom of the storage chamber and connects the pusher groove 1121 with the lower side of the storage rod 131, the lowest retaining spring 40 stored on the storage rod 131 can fall into the pusher groove 1121 under the action of gravity. Since the depth of the pusher groove 1121 matches the thickness of the retaining spring 40, it can only accommodate one retaining spring 40. When the pusher plate 112 continues to move to the set clamping position, it can transport the retaining spring 40 out. The pusher plate 112 moves repeatedly between the bottom of the storage rod 131 and the clamping position, so that the retaining springs 40 that fall into the pusher plate 112 in the same direction can be moved to the clamping position, so that the gripper 121 can directly clamp and transport the retaining spring 40 in the pusher groove 1121.

[0048] 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. A snap ring mounting device, characterized in that, The snap ring mounting device includes: a feeding assembly, a pressing assembly, and a positioning assembly; The positioning component is used to fix the part to be installed. The part to be installed includes a snap ring mounting part, which includes a cylindrical body with an opening facing the pressing component and a snap ring groove on the inner circumferential surface of the cylindrical body. The pressing component includes a guide cylinder and a pressing head. The guide cylinder includes a guide cavity, which is configured such that its diameter gradually decreases as it extends from top to bottom. The pressing head can move along the extension direction of the guide cylinder. The snap ring mounting part is located at the outlet end of the guide cylinder. The feeding assembly includes a feeding unit and a clamping unit. The feeding unit can transport the snap ring to be installed at a set angle to the clamping position. The clamping unit includes a jaw and a first driving assembly. The jaw includes a clamping seat, multiple movable arc bodies, and a second driving assembly. The first end of the movable arc body is hinged to the clamping seat. The jaw has a first state and a second state. In the first state, the second ends of the multiple movable arc bodies converge with each other and can extend into the inner ring of the snap ring. In the second state, the second ends of the multiple movable arc bodies move away from each other and are supported inward on the inner ring surface of the snap ring. The second driving assembly can drive the jaw to switch between the first state and the second state. The first driving assembly can drive the jaw to move between the clamping position and the guide cylinder to transfer the snap ring into the guide cylinder. A limiting groove is provided on the outer circumferential surface of the movable arc body. Multiple limiting grooves are connected in sequence and arranged around the gripper to form a limiting ring. The inner ring surface of the snap ring can abut against the limiting groove. The limiting ring includes an upper ring surface and a lower ring surface. The upper ring surface includes an adjustment part corresponding to the snap ring opening. As the upper ring surface extends towards the adjustment part, it gradually moves away from the lower ring surface. The bottom surface of the pressure head includes a first abutting part and a second abutting part. The first abutting part can abut against a first side of the snap ring opening, and the second abutting part can abut against a second side of the snap ring opening. The first abutting part is lower than the second abutting part. The bottom surface of the pressure head is designed to gradually rise as it extends from the first abutment portion to the second abutment portion.

2. The snap ring mounting device according to claim 1, characterized in that, The pressure head includes an inner pressure head and an outer pressure head arranged coaxially, and also includes a third drive assembly. The outer pressure head is at least partially arranged around the inner pressure head. The first abutment portion and the second abutment portion are arranged on the lower side of the outer pressure head. Both the inner pressure head and the outer pressure head can abut against the upper side of the retaining ring. The diameter of the outer pressure head is larger than the lower end diameter of the guide cavity, and the diameter of the inner pressure head is less than or equal to the lower end diameter of the guide cavity. The pressure head includes a third state and a fourth state. In the third state, the bottom end of the outer pressure head is lower than the bottom end of the inner pressure head. In the fourth state, the bottom end of the inner pressure head can extend through the lower opening of the guide cavity. The third driving component can drive the pressure head to switch between the third state and the fourth state.

3. The snap ring mounting device according to claim 2, characterized in that, The bottom surface of the inner pressure head is designated as the first side corresponding to the opening of the retaining ring, and the bottom surface of the inner pressure head is designated as the second side corresponding to the side away from the opening of the retaining ring. The bottom surface of the inner pressure head is configured to gradually extend downwards during the extension process from the first side to the second side.

4. A snap ring mounting device according to claim 2, characterized in that, The third driving component includes a third driver and an elastic element. The third driver can drive the inner pressure head to move in a vertical direction. The elastic element is disposed between the outer pressure head and the inner pressure head. The elastic element can push the outer pressure head to move downward.

5. A snap ring mounting device according to claim 1, characterized in that, The first driving component drives the gripper to move above the guide cylinder, causing the central axis of the gripper to shift relative to the central axis of the guide cylinder in the direction of the snap ring opening.

6. A snap ring mounting device according to claim 1, characterized in that, The feeding unit includes a fixed plate, a pusher plate, and a fourth drive assembly. The fixed plate is provided with a guide groove, and the pusher plate is provided with a pusher groove for placing the snap ring. The pusher plate is disposed in the guide groove, and the fourth drive assembly can drive the pusher plate to move along the extension direction of the guide groove. The first end of the guide groove is the clamping position.

7. A snap ring mounting device according to claim 6, characterized in that, The feeding assembly also includes a storage unit disposed on the fixed plate. The storage unit includes a storage rod disposed at the second end of the guide groove. The storage rod extends vertically. The retaining rings can be sequentially sleeved on the storage rod. The storage rod is provided with a guide strip. The guide strip matches the opening of the retaining ring and can sequentially pass through the openings of multiple retaining rings.

8. A snap ring mounting device according to claim 7, characterized in that, The pusher plate can be moved to the bottom of the storage unit. The length of the pusher plate is greater than the distance between the storage rod and the clamping position. The depth of the pusher groove matches the thickness of the retaining spring.

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