press-fitting mechanism
By combining the material pick-up rod and sleeve tube structure with the driver to control the position and movement of the retaining ring, the problem of retaining ring pressing failure was solved, and stable pressing and precision control of the retaining ring on the rotating shaft were achieved.
Patent Information
- Application Number
- CN202522579888.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-04
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-04
AI Technical Summary
In existing technologies, retaining rings are prone to failure during assembly, leading to instability.
The device employs a combination of a pick-up rod and a sleeve. The pick-up rod is inserted into the inner ring of the retaining ring to grasp it, and the sleeve pushes the retaining ring to slide along the pick-up rod. The position and movement of the retaining ring are controlled by a driver to ensure the stability of the retaining ring during the pressing process.
It effectively prevents the retaining ring from tilting and falling off, improves the success rate of pressing the retaining ring on the rotating shaft, reduces damage from hard impacts, lowers costs, and maintains pressing accuracy.
Smart Images
Figure CN224927388U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of press-fitting technology, and more specifically, relates to a press-fitting mechanism. Background Technology
[0002] In motor manufacturing, it is often necessary to install retaining rings on the rotor shaft. Existing retaining ring assembly devices use a robotic arm to align the retaining ring with the end of the shaft and then push the retaining ring onto the rotor shaft. Retaining rings are typically secured using a U-groove clamp during assembly. However, because retaining rings are relatively thin, they are unstable within the U-groove, leading to frequent pressing failures. Utility Model Content
[0003] The purpose of this application is to provide a pressing mechanism to solve the technical problem that the retaining ring is prone to pressing failure in the prior art.
[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a pressing mechanism, comprising: A pick-up bar is used to engage with the inner ring of the insert ring to grip the insert ring; A sleeve tube is used to push the retaining ring to slide along the material picking rod, and the sleeve tube is slidably sleeved on the material picking rod; A first driver is used to drive the material picking rod to rise and fall, and the power output end of the first driver is connected to the material picking rod; A second actuator, used to drive the sleeve to rise and fall, wherein the power output terminal of the second actuator is connected to the sleeve; and, The frame supports the second drive.
[0005] By using a pick-up rod, the circlip can be inserted into the inner ring of the retaining ring to grasp it, which helps to maintain the stability of the retaining ring position and prevent the retaining ring from tilting. By using a sleeve tube, the retaining ring can be pushed along the pick-up rod to push the retaining ring to the corresponding position on the rotor shaft. This helps to maintain the stability of the retaining ring position during the pressing process and prevents the retaining ring from tilting and causing pressing failure.
[0006] In one embodiment, the material take-up rod includes a sliding section connected to the power output end of the first driver and an interference section disposed at the output end of the sliding section. The interference section is used to interfere with the inner ring of the retaining ring, and the sleeve is slidably sleeved on the sliding section.
[0007] By employing the aforementioned technical means, it is possible to prevent the retaining ring from falling off the material take-up bar.
[0008] In one embodiment, a limiting step is formed between the interference section and the sliding section to stop and position the retaining ring.
[0009] By employing the aforementioned technical means, the position of the clasp can be controlled when grasping it.
[0010] In one embodiment, the pressing mechanism further includes a first support and a second support, wherein the first support connects the fixed end of the material taking rod to the power output end of the first driver, and the second support connects the fixed end of the sleeve tube to the power output end of the second driver.
[0011] By adopting the above-mentioned technical means, the installation of the material handling rod and the sleeve tube is facilitated.
[0012] In one embodiment, the pressing mechanism further includes a limiting rod mounted on the second support, a floating seat slidably sleeved on the limiting rod, and an elastic element for pushing the floating seat closer to the rotor, wherein the floating seat is connected to the sleeve tube.
[0013] By employing the aforementioned technical means, damage to the pressing mechanism, retaining ring, and rotor from hard impacts can be prevented.
[0014] In one embodiment, the elastic element is sleeved on the limiting rod, and both ends of the elastic element abut against the floating seat and the second support, respectively; and / or, The number of limiting rods is two, and the two limiting rods are respectively located on opposite sides of the material picking rod; the number of elastic elements is two, and the two elastic elements correspond one-to-one with the two limiting rods; and / or, A trigger is installed on the second support, and a sensor is installed on the floating base to cooperate in sensing the trigger.
[0015] By adopting the above-mentioned technical means, it is beneficial to maintain the stability of the position of the elastic element; it is beneficial to maintain the force balance of the sleeve tube; it is convenient to control the second drive to stop the pressing, and protect the pressing mechanism and rotor.
[0016] In one embodiment, the side of the first driver away from the second driver is slidably connected to the first support; and / or, The second driver is slidably connected to the second support on the side closest to the first driver.
[0017] By adopting the above-mentioned technical means, it is beneficial to improve the stability of the lifting of the first support; it is also beneficial to improve the stability of the lifting of the second support.
[0018] In one embodiment, the pressing mechanism further includes a third support and a translation component for driving the third support to translate. The translation component is mounted on the upright, and the power output end of the translation component is connected to the third support. The third support is connected to the second driver. The third support is slidably connected to the upright.
[0019] By employing the aforementioned technical means, the position of the material take-up bar can be adjusted to align with the retaining ring or rotor.
[0020] In one embodiment, the free end of the picking rod is provided with a protrusion for fitting into the positioning groove of the guide rod; or, The free end of the material-taking rod is provided with a protrusion for fitting into the central groove of the rotating shaft; and / or, The free end of the picking rod is provided with a gradient section, and the diameter of the gradient section gradually decreases in the direction away from the free end of the picking rod.
[0021] By adopting the above-mentioned technical means, the stability of the guide component can be maintained when docking with the guide component; the stability of the rotor can be maintained when docking with the rotating shaft; and the retaining ring can be easily fitted onto the material picking rod when picking up materials.
[0022] In one embodiment, the first actuator is a cylinder, and the second actuator is an electric cylinder.
[0023] By adopting the above-mentioned technical means, it is helpful to reduce costs and maintain the positional accuracy of the press-fit circlip. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 A three-dimensional structural schematic diagram of the pressing mechanism provided in the embodiments of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a partial cross-sectional structural diagram of the material handling rod and sleeve in the embodiments of this application.
[0026] The following are the labeling elements in the figure: 10. Frame; 11. Picking rod; 111. Sliding section; 112. Interference fit section; 113. Limiting step; 114. Gradient section; 115. Protrusion; 12. First support; 13. First actuator; 14. Sleeve; 15. Second support; 151. Limiting rod; 152. Floating seat; 153. Elastic element; 154. Trigger element; 155. Sensor element; 16. Second actuator; 17. Third support; 18. Translation assembly; 20. Snap ring. Detailed Implementation
[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0031] Please refer to the following: Figures 1 to 3 The pressing mechanism provided in this application embodiment will now be described. The pressing mechanism includes a picking rod 11, a sleeve tube 14, a first driver 13, a second driver 16, and a stand 10. The picking rod 11 is used to cooperate in inserting into the inner ring of the retaining ring 20 to grasp the retaining ring 20; the sleeve tube 14 is used to push the retaining ring 20 to slide along the picking rod 11 (as shown in the Z-axis direction), and the sleeve tube 14 is slidably sleeved on the picking rod 11; the first driver 13 is used to drive the picking rod 11 to rise and fall, and the power output end of the first driver 13 is connected to the picking rod 11; the second driver 16 is used to drive the sleeve tube 14 to rise and fall, and the power output end of the second driver 16 is connected to the sleeve tube 14; the stand 10 supports the second driver 16.
[0032] It should be noted that the sleeve tube 14 can be a round tube, square tube, or other tubular structure, and the cross-section of the picking rod 11 can be circular or regular polygonal. The sleeve tube 14 is slidably sleeved on the picking rod 11, and both ends of the picking rod 11 can protrude from the sleeve tube 14. When the sleeve tube 14 slides along the picking rod 11, the free end of the picking rod 11 can be retracted into the sleeve tube 14. The inner ring of the retaining ring 20 refers to the hole of the retaining ring 20. The retaining ring 20 can be interference-fitted, friction-fitted, or magnetically engaged with the picking rod 11 to prevent the retaining ring 20 from falling off after being gripped. The first driver 13 can drive the picking rod 11 to rise and fall independently, and the second driver 16 can drive the sleeve tube 14 to rise and fall to press the retaining ring 20 onto the rotating shaft.
[0033] In this embodiment, the material-taking rod 11 can be inserted into the inner ring of the retaining ring 20 to grasp the retaining ring 20, thereby helping to maintain the stability of the position of the retaining ring 20 and preventing the retaining ring 20 from tilting radially relative to the sleeve tube 14. By using the sleeve tube 14, the retaining ring 20 can be pushed to slide along the material-taking rod 11 so as to push the retaining ring 20 to the corresponding position on the rotor shaft. This helps to maintain the stability of the position of the retaining ring 20 during the pressing process and prevents the retaining ring 20 from tilting and causing pressing failure.
[0034] Optionally, the power output end of the second driver 16 is connected to the sleeve 14 and the first driver 13, and the second driver 16 is used to drive the sleeve 14 and the first driver 13 to move up and down. This helps to reduce the stroke of the first driver 13 and reduce the size of the first driver 13. When pressing the retaining ring 20, when the second driver 16 drives the first driver 13 and the sleeve 14 to descend, the first driver 13 can drive the picking rod 11 to rise, so that the height of the picking rod 11 remains unchanged.
[0035] In one embodiment of this application, please refer to Figures 1 to 3 The material-grabbing rod 11 includes a sliding section 111 and an interference section 112. The sliding section 111 is connected to the power output end of the first driver 13. The interference section 112 is located at the output end of the sliding section 111 and is used to make an interference fit with the inner ring of the retaining ring 20. The sleeve tube 14 is slidably sleeved on the sliding section 111. By using the interference fit between the interference section 112 and the retaining ring 20, it is possible to easily grasp and lift the retaining ring 20 in the vertical direction, preventing the retaining ring 20 from loosening.
[0036] In one embodiment of this application, please refer to Figures 1 to 3 A limiting step 113 is formed between the interference section 112 and the sliding section 111, which is used to stop and position the retaining ring 20. In this way, the position of the retaining ring 20 on the picking rod 11 can be controlled.
[0037] In one embodiment of this application, please refer to Figures 1 to 3The pressing mechanism also includes a first support 12 and a second support 15. The first support 12 connects the fixed end of the picking rod 11 to the power output end of the first driver 13, and the second support 15 connects the fixed end of the sleeve tube 14 to the power output end of the second driver 16. The first driver 13 is mounted on the second support 15. This reduces the stroke of the first driver 13, making the first driver 13 smaller; it also facilitates the assembly and connection of the picking rod 11 and the sleeve tube 14, and helps improve stability.
[0038] In one embodiment of this application, please refer to Figures 1 to 3 The pressing mechanism also includes a limiting rod 151, a floating seat 152, and an elastic element 153. The limiting rod 151 is mounted on the second support 15, the floating seat 152 is slidably sleeved on the limiting rod 151, and the elastic element 153 is used to push the floating seat 152 closer to the rotor. The floating seat 152 is connected to the sleeve tube 14. In this way, it is possible to prevent the sleeve tube 14 from being damaged by hard impact during the gripping or pressing of the retaining ring 20, thus preventing damage to the pressing mechanism, retaining ring 20, and rotor.
[0039] In one embodiment of this application, please refer to Figures 1 to 3 The elastic element 153 is sleeved on the limiting rod 151, and its two ends abut against the floating seat 152 and the second support 15, respectively. The elastic element 153 can be a spring. In this way, the floating seat 152 can be moved away from the second support 15 to provide a buffering effect when the sleeve tube 14 is subjected to resistance.
[0040] In one embodiment of this application, please refer to Figures 1 to 3 There are two limiting rods 151, located on opposite sides of the material-taking rod 11; there are also two elastic elements 153, each corresponding to one of the two limiting rods 151. This helps maintain the force balance on both sides of the floating seat 152 and the sleeve tube 14, improving stability.
[0041] In one embodiment of this application, please refer to Figures 1 to 3 A trigger element 154 is mounted on the second support 15, and a sensor element 155 is mounted on the floating seat 152 to cooperate with the trigger element 154. When the floating seat 152 approaches the second support 15 to a preset distance, the trigger element 154 senses the sensor element 155 and triggers a stop pressing signal, controlling the second driver 16 to stop pressing down, thereby preventing excessive pressure from damaging the rotor, retaining ring 20, or pressing mechanism. Optionally, a strip-shaped hole is provided on the side of the floating seat 152, which is arranged along the length of the material handling rod 11. The sensor element 155 is locked to the floating seat 152 by a screw that slides through the strip-shaped hole. In this way, the distance between the sensor element 155 and the trigger element 154 can be easily adjusted.
[0042] In one embodiment of this application, please refer to Figures 1 to 3 The side of the first actuator 13 furthest from the second actuator 16 is slidably connected to the first support 12. This improves the stability of the first support 12 during lifting. Optionally, a crossed roller bearing connected to the first support 12 is installed on the side of the first actuator 13 furthest from the second actuator 16. This guides the first support 12 to slide in a straight line, further improving its stability.
[0043] In one embodiment of this application, please refer to Figures 1 to 3 The second actuator 16 is slidably connected to the second support 15 on the side closest to the first actuator 13. This improves the stability of the second support 15 during lifting. Optionally, a first slide rail is mounted on the side of the second actuator 16 closest to the first actuator 13, and a first slider that slides along the first slide rail is mounted on the second support 15. This guides the second support 15 to slide in a straight line, further improving its stability.
[0044] In one embodiment of this application, please refer to Figures 1 to 3 The pressing mechanism also includes a third support 17 and a translation component 18 for driving the third support 17 to move horizontally. The translation component 18 is mounted on the upright 10, and its power output end is connected to the third support 17. The third support 17 is connected to the second driver 16. The horizontal position of the third support 17 can be adjusted via the translation component 18 to control the alignment of the material-picking rod 11 with the retaining ring 20 during material picking and with the rotor during pressing. Optionally, the third support 17 is slidably connected to the upright 10. This improves the stability of the third support 17. Optionally, a second slide rail is mounted on the upright 10, and a second slider that slidably engages with the second slide rail is mounted on the third support 17. The second slide rail and the second slider engage to guide the third support 17 to move linearly. Of course, the translation component 18 can be a drive structure that drives the third support 17 to move along the X-axis, Y-axis, or XY plane.
[0045] Optionally, the translation assembly 18 includes a nut, a lead screw, and a motor. The nut is mounted on the third support 17, the lead screw is connected to the nut, and the lead screw is rotatably mounted on the upright 10. The motor is mounted on the upright 10, and the motor's shaft is connected to the lead screw, driving the lead screw to rotate. This allows control over the distance the third support 17 moves along the lead screw, thus precisely controlling the horizontal displacement of the material handling rod 11. Optionally, there are two second slide rails, located on opposite sides of the lead screw, and two sets of second sliders, each corresponding to one of the two second slide rails. This improves the stability of the third support 17 during sliding.
[0046] In one embodiment of this application, please refer to Figures 1 to 3The free end of the picking rod 11 is provided with a protrusion 115 for matching the positioning groove of the guide rod. In this way, after the picking rod 11 is aligned and pressed with the guide rod, the stability between the picking rod 11 and the guide rod can be maintained, preventing the guide rod from tilting or misaligning.
[0047] In one embodiment of this application, please refer to Figures 1 to 3 The free end of the picking rod 11 is provided with a protrusion 115 for fitting into the central groove of the rotating shaft. In this way, when the picking rod 11 is directly aligned and pressed against the rotating shaft, the stability between the picking rod 11 and the rotating shaft can be maintained, preventing the rotor from tilting or misaligning.
[0048] In one embodiment of this application, please refer to Figures 1 to 3 The free end of the picking rod 11 has a tapered section 114, the diameter of which gradually decreases in the direction away from the free end of the picking rod 11. After the picking rod 11 is aligned with the middle of the retaining ring 20, the first driver 13 drives the picking rod 11 to move toward the retaining ring 20 until the retaining ring 20 is fitted onto the picking rod 11. By using the tapered section 114, it is convenient to insert the picking rod 11 into the inner ring of the retaining ring 20.
[0049] In one embodiment of this application, please refer to Figures 1 to 3 The first actuator 13 is a pneumatic cylinder, and the second actuator 16 is an electric cylinder. This design helps to save costs and reduce weight, while also controlling the displacement of the sleeve 14 during pressing to ensure pressing accuracy.
[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A pressing mechanism, characterized in that, include: A pick-up bar is used to engage with the inner ring of the insert ring to grip the insert ring; A sleeve tube is used to push the retaining ring to slide along the material picking rod, and the sleeve tube is slidably sleeved on the material picking rod; A first driver is used to drive the material picking rod to rise and fall, and the power output end of the first driver is connected to the material picking rod; A second actuator, used to drive the sleeve to rise and fall, wherein the power output terminal of the second actuator is connected to the sleeve; and, The frame supports the second drive.
2. The pressing mechanism as described in claim 1, characterized in that: The material taking rod includes a sliding section connected to the power output end of the first driver and an interference section located at the output end of the sliding section. The interference section is used to make an interference fit with the inner ring of the retaining ring, and the sleeve is slidably sleeved on the sliding section.
3. The pressing mechanism as described in claim 2, characterized in that: A limiting step is formed between the interference section and the sliding section to stop and position the retaining ring.
4. The pressing mechanism as described in claim 1, characterized in that: The pressing mechanism further includes a first support and a second support. The first support connects the fixed end of the material taking rod to the power output end of the first driver, and the second support connects the fixed end of the sleeve tube to the power output end of the second driver.
5. The pressing mechanism as described in claim 4, characterized in that: The pressing mechanism further includes a limiting rod installed on the second support, a floating seat slidably sleeved on the limiting rod, and an elastic element for pushing the floating seat closer to the rotor. The floating seat is connected to the sleeve tube.
6. The pressing mechanism as described in claim 5, characterized in that: The elastic element is sleeved on the limiting rod, and both ends of the elastic element abut against the floating seat and the second support, respectively; and / or, The number of limiting rods is two, and the two limiting rods are respectively located on opposite sides of the material picking rod; the number of elastic elements is two, and the two elastic elements correspond one-to-one with the two limiting rods; and / or, A trigger is installed on the second support, and a sensor is installed on the floating base to cooperate in sensing the trigger.
7. The pressing mechanism as described in claim 4, characterized in that: The side of the first driver away from the second driver is slidably connected to the first support; and / or, The second driver is slidably connected to the second support on the side closest to the first driver.
8. The pressing mechanism according to any one of claims 1 to 7, characterized in that: The pressing mechanism further includes a third support and a translation component for driving the third support to translate. The translation component is mounted on the upright, and the power output end of the translation component is connected to the third support. The third support is connected to the second driver. The third support is slidably connected to the upright.
9. The pressing mechanism according to any one of claims 1 to 7, characterized in that: The free end of the material-taking rod is provided with a protrusion for fitting into the positioning groove of the guide rod; or, The free end of the material-taking rod is provided with a protrusion for fitting into the central groove of the rotating shaft; and / or, The free end of the picking rod is provided with a gradient section, and the diameter of the gradient section gradually decreases in the direction away from the free end of the picking rod.
10. The pressing mechanism according to any one of claims 1 to 7, characterized in that: The first actuator is a pneumatic cylinder, and the second actuator is an electric cylinder.