Ball press-fitting device for retainer

Abstract

The embodiment of the invention relates to automobile manufacturing, and discloses a ball press-fitting device for a retainer, which comprises a positioning seat, a ball bearing, a ball bearing, a ball bearing, a ball bearing, a ball bearing, a ball bearing, a ball bearing, a ball bearing, a ball bearing, a ball bearing, a ball bearing, a ball bearing and a ball bearing, and is characterized in that a reference limiting hole is formed in the middle of the positioning seat; the pressing air cylinder comprises a telescopic rod, and the telescopic rod corresponds to the guide hole set so that the telescopic rod can stretch out and penetrate through the guide hole set. Wherein the retainer is inserted into the reference limiting hole and can rotate relative to the positioning seat, so that the ball guided in from the material hole group rotates to the guide hole group along with the retainer and is embedded on the retainer under the action of a telescopic rod of the pressing cylinder. Automatic ball feeding and multi-station synchronous press fitting are achieved, traditional manual single operation is replaced, and efficiency is remarkably improved; and the rotation of the retainer is matched with the guide hole group, and the guide hole group and the telescopic rod are correspondingly arranged, so that the precision of the ball press-fitting position is ensured, and the problems of frequent neglected loading and poor press-fitting consistency in the traditional manual operation are solved.

Description

Technical Field

[0001] This application relates to the technical field of automobile manufacturing, and particularly relates to a ball pressing device for a cage. Background Art

[0002] In the traditional process, balls need to be manually loaded, positioned, and pressed one by one. Especially for cages with multiple sets of embedding holes (such as a structure with 6 sets circumferentially distributed and 6 embedding holes in each set), the single pressing operation needs to be repeated dozens of times, which is time-consuming and laborious and cannot meet the requirements of large-scale production. In addition, it is difficult for manual labor or simple tooling to achieve precise alignment between the cage and the balls, which easily leads to deviation, inclination, or looseness in the ball pressing position, affecting the consistency of the mechanical properties of the product and resulting in a high rejection rate. Summary of the Invention

[0003] One object of this application is to provide a ball pressing device for a cage, which is at least used to solve the above problems.

[0004] To achieve the above object, some embodiments of this application provide a ball pressing device for a cage, including:

[0005] A positioning seat, which is constructed with a reference limiting hole in the middle, and a set of material holes and a set of guide holes are arranged at intervals along the inner ring surface of the reference limiting hole;

[0006] A pressing cylinder, including a telescopic rod, and the telescopic rod is correspondingly arranged with the set of guide holes so that the telescopic rod extends through the set of guide holes;

[0007] Wherein, the cage is inserted into the reference limiting hole and can rotate relative to the positioning seat, so that the balls introduced from the set of material holes rotate with the cage to the set of guide holes and are embedded on the cage under the action of the telescopic rod of the pressing cylinder.

[0008] Compared with the related art, in the solution provided by the embodiments of this application, through the layout of the set of material holes and the set of guide holes, combined with the rotation of the cage, automatic ball feeding and multi-station synchronous pressing are realized, replacing the traditional manual single operation, and significantly improving the efficiency; in addition, the positioning function of the reference limiting hole on the cage, combined with the corresponding setting of the set of guide holes and the telescopic rod, ensures the position accuracy of ball pressing and solves the problem of poor consistency in traditional manual operations; and through the cooperation of the rotation of the cage and the set of guide holes, it is ensured that each ball is accurately pressed into the embedding hole on the cage, solving the problems of frequent missing loading and poor pressing consistency in traditional manual operations. Brief Description of the Drawings

[0009] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0010] Figure 1 It is a schematic structural diagram of the ball pressing device provided by an embodiment of the present disclosure;

[0011] Figure 2 It is a schematic structural diagram of another perspective of the ball pressing device provided by an embodiment of the present disclosure;

[0012] Figure 3 It is a schematic structural diagram of another perspective of the ball pressing device provided by an embodiment of the present disclosure;

[0013] Figure 4 It is a schematic structural diagram of another perspective of the ball pressing device provided by an embodiment of the present disclosure;

[0014] Figure 5 It is a schematic structural diagram of another perspective of the ball pressing device provided by an embodiment of the present disclosure;

[0015] Figure 6 It is a schematic structural diagram of another perspective of the ball pressing device provided by an embodiment of the present disclosure;

[0016] Figure 7 It is a schematic structural diagram of the pressing cylinder provided by an embodiment of the present disclosure;

[0017] Figure 8 It is a schematic structural diagram of the positioning seat provided by an embodiment of the present disclosure;

[0018] Figure 9 It is an assembly schematic diagram of the positioning seat, cage and limiting shaft provided by an embodiment of the present disclosure;

[0019] Figure 10 It is an assembly schematic diagram of another perspective of the positioning seat, cage and limiting shaft provided by an embodiment of the present disclosure;

[0020] Figure 11 It is an assembly schematic diagram of the cage and limiting shaft provided by an embodiment of the present disclosure;

[0021] Figure 12 It is a sectional structural schematic diagram of the cage and limiting shaft provided by an embodiment of the present disclosure;

[0022] Figure 13 It is an assembly schematic diagram of the limiting shaft and the ejecting cylinder provided by an embodiment of the present disclosure;

[0023] Figure 14 It is an assembly schematic diagram of the fixing ring and the second detection sensor provided by an embodiment of the present disclosure;

[0024] Figure 15 It is an assembly schematic diagram of the second base, the magazine and the swing cylinder provided by an embodiment of the present disclosure;

[0025] Figure 16is a schematic assembly diagram of the second base, the silo and the swing cylinder from another perspective provided in an embodiment of the present disclosure;

[0026] Figure 17 is a schematic diagram of the structure of a silo provided in an embodiment of the present disclosure;

[0027] Figure 18 It is a schematic diagram of the cross-sectional structure of the silo provided in an embodiment of the present disclosure.

[0028] Reference numerals:

[0029] 10: retainer; 101: embedded hole; 102: ball bearing; 103: limit ring; 104: ring platform; 20: positioning seat; 201: reference limit hole; 202: first limit groove; 203: material hole group; 204: guide hole group; 205: flange; 206: second limit groove; 30: clamping cylinder; 301: distribution block; 302: telescopic rod of clamping cylinder; 40: second detection sensor; 401: fixing block; 50: limit shaft; 501: groove; 60: ejection cylinder; 601: mounting bracket; 70: first Base; 801: connecting rod; 802: cutting cylinder; 90: supporting seat; 110: first limiting part; 120: second limiting part; 130: second base; 131: unloading area; 132: unloading port; 133: installation area; 134: rotating shaft; 140: silo; 141: bottom plate; 142: silo body; 143: unloading port; 144: supporting plate; 145: sleeve; 146: silo cover; 150: swing cylinder; 151: transfer rod; 160: first detection sensor; 170: fixing ring; 180: mounting bracket. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0032] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", and "back" is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments, and are not used to limit that the indicated devices, elements, or components must have a specific orientation or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0033] In addition, the terms "arrangement", "connection", and "fixation" should be understood in a broad sense. For example, "connection" 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 directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0034] Unless otherwise specified, the term "plural" means two or more.

[0035] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0036] The term "and / or" is an associative relationship describing an object, indicating that there can be three relationships. For example, A and / or B means: A or B, or, the three relationships of A and B.

[0037] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0038] Combined Figures 1 to 18 As shown, a ball pressing device for a cage 10 provided by the embodiments of the present disclosure includes: a positioning seat 20 and a pressing cylinder 30.

[0039] The positioning seat 20 is constructed with a reference limiting hole 201 in the middle, and a set of material holes 203 and a set of guide holes 204 are arranged at intervals along the inner ring surface of the reference limiting hole 201; the pressing cylinder 30 includes a telescopic rod, and the telescopic rod is correspondingly arranged with the set of guide holes 204 so that the telescopic rod extends through the set of guide holes 204; wherein, the cage 10 is inserted into the reference limiting hole 201 and can rotate relative to the positioning seat 20, so that the balls introduced from the set of material holes 203 rotate with the cage 10 to the set of guide holes 204, and under the action of the telescopic rod 302 of the pressing cylinder, are embedded on the cage 10.

[0040] By adopting the ball press-fitting device for the retaining frame 10 provided in the embodiment of the present disclosure, the layout of the material hole group 203 and the guide hole group 204 is coordinated with the rotation of the retaining frame 10 to realize automatic feeding of the balls and multi-station synchronous press-fitting, replacing the traditional manual single operation and significantly improving the efficiency; in addition, the positioning effect of the reference limit hole 201 on the retaining frame 10, combined with the corresponding setting of the guide hole group 204 and the telescopic rod, ensures the accuracy of the ball press-fitting position, and solves the problem of poor consistency in traditional manual operation; and through the rotation of the retaining frame 10 and the coordination of the guide hole group 204, it is ensured that each ball is accurately press-fitted into the embedding hole 101 on the retaining frame 10, solving the problems of frequent missing installation and poor press-fitting consistency in traditional manual operation.

[0041] The retainer 10 is a columnar shell structure, and a plurality of embedding holes 101 to be installed with balls are configured on the side wall. The plurality of embedding holes 101 are divided into a plurality of groups, and each group of embedding holes 101 is evenly arranged along the axial direction of the retainer 10. The spacing between the plurality of embedding holes 101 in the same plane is equal along the circumference of the retainer 10. Exemplarily, the retainer 10 is configured with 6 groups of embedding holes 101, and each group includes 6 embedding holes 101.

[0042] The regularized layout of the embedding holes 101 forms a one-to-one correspondence with the material hole groups 203 and the guide hole groups 204 of the positioning seat 20 (e.g., 6 groups of embedding holes 101 correspond to 6 groups of material hole groups 203 / guide hole groups 204), which facilitates the modular design of the positioning seat 20 and the overall device, realizes the simultaneous loading and pressing of multiple groups of balls, and greatly improves the efficiency of a single operation.

[0043] The circumferentially evenly spaced distribution ensures that the retainer 10 is evenly stressed when rotating, thereby avoiding press-fit position deviation or deformation of the retainer 10 due to eccentric loads, and improving product structural stability and press-fit accuracy.

[0044] The retainer 10 is inserted into the reference limiting hole 201 of the positioning seat 20, and the outer circumference of the retainer 10 is spaced a preset distance from the inner annular surface of the reference limiting hole 201, so that the retainer 10 can rotate relative to the reference limiting hole 201. The distance between the outer circumference of the retainer 10 and the inner annular surface of the reference limiting hole 201 is at least greater than the radius of the ball, and when the ball material hole group 203 enters the reference limiting hole 201, the ball is tangent to the inner annular surface of the reference limiting hole 201, so that the retainer 10 drives the ball to rotate in the reference limiting hole 201.

[0045] The preset spacing not only ensures that the cage 10 can rotate flexibly, but also provides a guiding force for rotation through the tangential contact between the ball and the inner ring surface, ensuring that the ball is smoothly transferred to the guide hole group 204, and avoiding jamming caused by too small a spacing or rotational deviation caused by too large a spacing. In addition, the design with a spacing greater than the radius of the ball can prevent the ball from falling out of the gap between the cage 10 and the positioning seat 20 during rotation. Combined with the size limitation of the subsequent guide hole group 204, a double anti-dropping mechanism is formed to improve the feeding reliability.

[0046] When the ball enters the reference limit hole 201 through the material hole group 203, that is, each set of embedding holes 101 corresponding to the material hole group 203 slightly embeds a ball. Before the pressing cylinder 30 acts, the cage 10 rotates a preset angle relative to the positioning seat 20, that is, the embedding hole 101 slightly embedding the ball is moved away from the material hole of the material hole group 203 and moved to the guide hole adjacent to the material hole and is arranged coaxially as much as possible. Then, the compression cylinder acts, and its telescopic rod extends through the guide hole of the guide hole group 204, and the end of the telescopic rod abuts against the ball and continues to apply pressure to the ball, and finally the ball is embedded in the cage 10 and does not fall off.

[0047] Before pressing, the cage 10 rotates a preset angle to make the embedding hole 101 coaxial with the guide hole, and the telescopic rod abuts against the ball and applies pressure to fix it. The preset angle ensures that the embedding hole 101 is coaxial with the guide hole, so that the telescopic rod can vertically apply pressure to the ball, avoiding the ball from tilting or being loosely pressed due to angle deviation; continuous pressure application can make the ball tightly fit in the cage 10, solving the problem of easy falling off in traditional manual pressing. In addition, the step-by-step execution of the rotation and pressing actions enables the device to be linked with processes such as sensor detection and ejection and unloading, forming a complete automated working closed loop.

[0048] Optionally, the size of the guide hole of the guide hole group 204 is less than or equal to the size of the material hole of the material hole group 203. In this way, it can be avoided that the ball rolls out of the guide hole group 204 when the ball slightly embedded in the embedding hole 101 rotates to the guide hole group 204. In some embodiments, when the telescopic rod 302 of the pressing cylinder retracts, and the end is in a state of blocking the opening of the guide hole group 204 on the outer peripheral surface of the positioning seat 20 (that is, the telescopic rod blocks the guide hole opening when it retracts), so as to better avoid the ball from falling out of the guide hole of the guide hole group 204.

[0049] The size limitation of the guide hole can prevent the ball from rolling out due to too large a hole when it rotates to the guide hole group 204; after the telescopic rod retracts, it blocks the guide hole opening, forming a physical barrier to further avoid accidental falling off of the ball, ensuring that the ball is stably located in the embedding hole 101 and the guide hole group 204 before pressing. Without additional limiting components, the function is realized only through the hole size design and the action of the cylinder, reducing the complexity of the device and improving the positioning reliability at the same time.

[0050] Optionally, the material hole group 203 includes a plurality of material holes, and the guide hole group 204 includes a plurality of guide holes; wherein the plurality of material holes and the plurality of guide holes are arranged along the axial direction of the reference limit hole 201, and the material holes and the guide holes are both through-hole structures.

[0051] The through hole design facilitates the ball to enter the reference limit hole 201 through the material hole group 203, and the telescopic rod can be vertically extended from the outside of the guide hole for press-fitting, thereby simplifying the transmission path.

[0052] In this embodiment, there are 6 material hole groups 203 and 6 guide hole groups 204, which are arranged alternately. Each group of embedding holes 101 on the retainer 10 has a corresponding material hole group 203 or a guide hole group 204.

[0053] Each group of material holes 203 / guide holes 204 corresponds to a group of embedded holes 101, and the loading and press-fitting of 6 groups of balls can be completed simultaneously. The processing volume of a single cycle is increased by 6 times compared with the traditional single-station operation, which significantly shortens the press-fitting time of a single retainer 10. In addition, the interval arrangement makes the positioning seat 20 evenly stressed, which is suitable for high-frequency rotation and high-frequency press-fitting scenarios, reducing wear or failure caused by structural eccentric loading.

[0054] Optionally, the spacings between adjacent material holes in the same material hole group 203 are equal.

[0055] The equidistant layout ensures that the material hole group 203 and the embedding hole 101 of the retainer 10 are strictly aligned in the circumferential and axial directions, avoiding the inability of the ball to accurately enter the embedding hole 101 due to spacing deviation, reducing the risk of missing or misalignment from the source, and improving the success rate of press-fitting.

[0056] Optionally, the channels of the multiple material holes of the material hole group 203 are arranged in two or more rows, and the channels of the multiple material holes are staggered. However, the openings of the material holes of each material hole group 203 on the inner annular surface of the reference limit hole 201 are evenly arranged along the axial direction. The multiple rows of channels correspond to the axial multi-layer embedding holes 101 of the retainer 10, so as to realize the one-time press-fitting of the multi-layer balls in the same axial direction, further improve the efficiency of a single operation, and reduce the number of rotations of the retainer 10. The staggered arrangement avoids the balls in the same group of material holes from squeezing or jamming each other, ensuring that each material hole is independently and smoothly fed, and improving the feeding stability.

[0057] In this embodiment, the multiple guide holes of the same guide hole group 204 are evenly distributed along the axial direction, whether they are openings on the inner annular surface of the reference limiting hole 201 or openings on the outer peripheral surface of the positioning seat 20 .

[0058] The uniform arrangement allows the pressure points of the telescopic rods to be aligned in the axial direction, ensuring that the pressure on the embedding holes 101 of each layer of the retainer 10 is consistent, avoiding deformation of the retainer 10 or inconsistent press-fitting depth of the ball due to uneven pressure, and improving product quality consistency.

[0059] Optionally, the positioning seat 20 is provided with a plurality of first limiting grooves 202 on the outer peripheral surface to define the installation position of the pressing cylinder 30; wherein, the first limiting grooves 202 are correspondingly and communicatively arranged with the guide hole group 204.

[0060] It should be noted that the number and arrangement of the telescopic rods 302 of the pressing cylinder are adapted to the number and arrangement pitch of the guide holes of the guide hole group 204, so that the telescopic rods 302 of the pressing cylinder pass through the guide holes of the guide hole group 204 to apply pressure to the ball bearings. One-to-one adaptation realizes the synchronous movement of multiple telescopic rods, ensures that all ball bearings are pressed in place at the same time, avoids the displacement of the cage 10 or local force overload caused by the pressing sequence, and improves the pressing accuracy and reliability.

[0061] The first limiting grooves 202 ensure the corresponding installation of the pressing cylinder 30 and the guide hole group 204, reducing the manual debugging time; the communicative design enables the telescopic rod to directly align with the guide hole, avoiding the failure of pressing due to installation deviation and improving the assembly efficiency. The detachable connection design facilitates the replacement of cylinders of different specifications to adapt to the pressing requirements of different models of cages 10, enhancing the versatility of the device.

[0062] Optionally, the pressing cylinder 30 is detachably connected to the side wall or bottom wall of the first limiting groove 202. In this way, it is convenient to replace cylinders of different specifications to adapt to the pressing requirements of different models of cages 10, enhancing the versatility of the device.

[0063] Optionally, the telescopic part of the pressing cylinder 30 includes a distribution block 301 and a plurality of telescopic rods. The plurality of telescopic rods are inserted into the distribution block 301 at preset positions, and the distribution block 301 is connected to the end of the piston of the pressing cylinder 30, so as to realize its telescopic movement with the telescopic rod. The distribution block 301 evenly transmits the driving force of the cylinder piston to each telescopic rod, avoiding the problems of eccentric load or asynchronous movement that may occur in single-rod driving, ensuring that the pressing forces of multiple ball bearings are consistent, and improving the stability of the pressing quality.

[0064] Optionally, the positioning seat 20 is further provided with a second limiting groove 206 for installing the second detection sensor 40. Wherein, the second detection sensor 40 is used to detect whether the cage 10 is installed in place. The end of the second detection sensor 40 is aligned with the cage 10 or inserted into the limiting shaft 50 inserted into the cage 10, and by detecting the position of the cage 10 or the relative position between the cage 10 and the limiting shaft 50, it is determined whether the cage 10 is installed in place.

[0065] In this embodiment, the second detection sensor 40 helps to ensure that after the cage 10 is completely inserted into the positioning seat 20 and reaches the preset position, the subsequent cutting and pressing actions are triggered, avoiding the leakage of ball bearings or damage to the device caused by improper installation. The detection signal serves as the starting condition for the pressing process, realizing the automatic logical connection of "detection - pressing - detection" and reducing the manual judgment error.

[0066] Optionally, the second limiting groove 206 is constructed on the upper surface of the positioning seat 20. In this way, it is easy to install. Exemplarily, the second limiting groove 206 is a semicircular groove. The upper surface opening design is convenient for the installation, calibration and daily inspection of the sensor; the semicircular groove shape is adapted to the sensor shape, providing a stable installation reference, while reducing the risk of wear of the exposed part of the sensor.

[0067] Optionally, when the second detection sensor 40 is embedded in the second limiting groove 206, the second detection sensor 40 is pressed by a fixing block 401, and both ends of the fixing block 401 are detachably connected to the positioning seat 20 on both sides of the second limiting groove 206. In this way, it can not only fix the second detection sensor 40, but also facilitate replacement, maintenance or adjustment of the second detection sensor 40. In addition, the detachable design allows fine adjustment of the sensor height or angle to adapt to different thicknesses or models of the retaining frame 10, thereby improving the compatibility of the device.

[0068] Optionally, it further includes: a limiting shaft 50 inserted into the reference limiting hole 201 of the positioning seat 20 and the retaining frame 10 to limit the radial displacement of the retaining frame 10.

[0069] The limiting shaft 50 passes through the retainer 10 to limit its radial movement, ensuring that the embedding hole 101 of the retainer 10 is always aligned with the material hole / guide hole during the rotation process, thereby avoiding misalignment of the ball due to shaking.

[0070] Optionally, the length of the limiting shaft 50 is greater than the length of the retainer 10. In this way, the design of being longer than the retainer 10 provides a stable abutment reference for the ejection cylinder 60, ensuring that the retainer 10 moves smoothly in the axial direction during the ejection process to prevent tilting.

[0071] Optionally, the outer peripheral surface of the limiting shaft 50 is configured with a plurality of grooves 501 arranged along the axial direction, and the spacing between adjacent grooves 501 matches the spacing between adjacent embedding holes 101 on the retaining frame 10 .

[0072] The telescopic rod of the ejection cylinder 60 moves along the groove 501 to ensure that the ejection force is vertically transmitted along the axial direction of the retainer 10, thereby preventing the retainer 10 from being deformed or the press-fitted balls from falling off due to the deviation of the ejection path.

[0073] Optionally, it also includes: an ejection cylinder 60, which is arranged below the positioning seat 20, and the telescopic rod of the ejection cylinder 60 is inserted into the reference positioning hole, and extends and retracts along the groove 501 of the limit axis 50, so as to support the bottom of the retaining frame 10 and extend the retaining frame 10 to eject it.

[0074] After the press-fitting is completed, the cage 10 is automatically ejected, replacing the manual material taking operation, reducing contact contamination and human error. At the same time, the loading and unloading time is shortened, and the automation degree of the production line is improved. The groove 501 guides to ensure that the ejection action has no interference with the rotation and press-fitting actions of the cage 10, improving the smoothness of the device operation.

[0075] Optionally, it further includes: a first base 70 for mounting the positioning seat 20; a rotary drive mechanism provided on the first base 70 and connected to the cage 10 for driving the cage 10 to rotate relative to the positioning seat 20.

[0076] The first base 70 serves as the main body of the device, integrating core components such as the positioning seat 20 and the rotating mechanism, providing a stable support platform, and reducing the influence of vibration during rotation on the press-fitting accuracy. The rotary drive mechanism rotates the cage 10 to stations such as loading, press-fitting, and detection, realizing continuous operation and meeting the requirements of mass production.

[0077] Optionally, the bottom end of the limiting shaft 50 abuts against the first base 70. In this way, a bottom support point can be provided for the cage 10 and the limiting shaft 50 to ensure the fixation of their axial positions.

[0078] Optionally, the ejection cylinder 60 is located below the first base 70, and the telescopic rod of the ejection cylinder 60 passes through the first base 70 and can move in and out along the groove 501 of the limiting shaft 50.

[0079] Optionally, the ejection cylinder 60 is hoisted below the first base 70 through a mounting bracket 601, where the mounting bracket 601 is detachably connected to the lower surface of the first base 70. The hoisting method saves the horizontal space above the first base 70, facilitating the integration of other components (such as the material bin 140 and the detection sensor), making the device structure more compact and adapting to a narrow production environment. In addition, the detachable bracket allows the adjustment of the height of the ejection cylinder 60 to adapt to cages 10 of different thicknesses, improving the model compatibility of the device.

[0080] Optionally, the rotary drive mechanism includes: a connecting rod 801, the first end of which is fixedly connected to the cage 10; a cutting cylinder 802, the telescopic rod of which is rotatably connected to the second end of the connecting rod 801; wherein, when the telescopic rod of the cutting cylinder 802 moves in and out, the first end of the connecting rod 801 drives the cage 10 to rotate around the axis of the cage 10.

[0081] Utilize the telescopic movement of the cutting cylinder 802 to be directly converted into the rotation of the cage 10, without a complex gear and motor drive system, reducing the manufacturing cost and maintenance difficulty of the device. In addition, cooperate with the limiting part to limit the rotation angle to ensure that the cage 10 rotates a fixed angle each time, realizing the precise alignment of the material hole group 203 and the guide hole group 204.

[0082] Optionally, the cage 10 includes a ball portion 102 for mounting balls and a limiting ring 103, and the limiting ring 103 is located below the balls. Among them, the distance from the inner ring surface of the ball portion 102 to the axis of the cage 10 is less than the distance from the inner ring surface of the limiting ring 103 to the axis of the cage 10. That is to say, the ball portion 102 protrudes from the inner ring surface of the limiting ring 103, and the two are in a stepped shape. In this way, the end of the telescopic rod of the ejecting cylinder 60 can abut against the part where the ball portion 102 protrudes from the inner ring surface of the limiting ring 103, and the cage 10 can be ejected from bottom to top. The stepped structure provides a clear abutting surface (the part where the ball portion 102 protrudes from the limiting ring 103) for the ejecting cylinder 60, so that the ejecting force acts on the area with higher structural strength of the cage 10, avoiding directly acting on the balls or the embedding holes 101, and preventing the balls from falling off due to the ejecting force after press-fitting.

[0083] Optionally, a plurality of limiting openings are formed in the bottom of the limiting ring 103. The first end of the connecting rod 801 is in a circular ring shape, and a plurality of longitudinally arranged pin shafts are formed on its upper surface. The pin shafts are adapted to the limiting openings. In this way, the connecting rod 801 is inserted into the limiting openings of the limiting ring 103 through the pin shafts to realize the relative fixation of the two, ensure synchronous rotation, and when the cage 10 is ejected, it can ensure the quick separation of the connecting rod 801 from the cage 10, avoiding interfering with the ejection of the cage 10.

[0084] The cooperation between the pin shaft and the limiting opening ensures that there is no relative sliding when the connecting rod 801 drives the cage 10 to rotate, and the power transmission is accurate; after the press-fitting is completed, the pin shaft can quickly disengage from the limiting opening during the ejection process, avoiding the connecting rod 801 from hindering the unloading of the cage 10, and improving the unloading efficiency and action coordination.

[0085] Optionally, it further includes: a flange 205, which is arranged on the lower surface of the positioning seat 20, is coaxially arranged with the positioning seat 20, and the inner diameter of the flange 205 is smaller than the aperture of the reference limiting hole 201 of the positioning seat 20; among them, an annular platform 104 protrudes outward from the outer peripheral surface of the limiting ring 103. When the cage 10 is inserted into the reference limiting hole 201 of the positioning seat 20 from top to bottom, the annular platform 104 overlaps on the flange 205 to ensure the longitudinal installation in place of the cage 10, so as to ensure that the embedding holes 101 on the cage 10 are correspondingly arranged with the material holes of the material hole group 203 and the guide holes of the guide hole group 204.

[0086] When the annular platform 104 overlaps the flange 205, the axial position of the cage 10 is ensured to be correct through mechanical limitation, so that the embedding holes 101 are accurately aligned with the material holes / guide holes, avoiding press-fitting failure caused by being inserted too deep or too shallow; it can effectively limit the insertion depth of the cage 10, avoid the collision between its bottom and the internal structure of the positioning seat 20, and protect the cage 10 and the device components from damage.

[0087] Optionally, it further includes: a support base 90, which is disposed between the positioning base 20 and the first base 70, that is, its upper surface abuts against the positioning base 20, and its lower surface abuts against the first base 70. The support base 90 is fixed to the positioning base 20 and the first base 70. The support base 90 is used to provide an installation and movement space for the rotation driving mechanism and the components connected thereto.

[0088] Optionally, the support base 90 defines a hollow area for accommodating structures such as the flange 205, the connecting rod 801, and the limiting ring 103 of the cage 10.

[0089] The hollow area of the support base 90 provides an independent movement space for moving components such as the rotation of the connecting rod 801 and the ejection cylinder 60, avoiding interference with the fixed structure; the support base 90 can block debris from entering and protect the operation of the internal mechanism.

[0090] Optionally, it further includes a first limiting portion 110 and a second limiting portion 120. Both the first limiting portion 110 and the second limiting portion 120 are installed on the first base 70 and are respectively located on both sides of the connecting rod 801. The connecting rod 801 rotates under the drive of the telescopic rod of the blanking cylinder 802, and the rotation angle of the connecting rod 801 is limited by the first limiting portion 110 and the second limiting portion 120, ensuring that when the connecting rod 801 rotates once, the balls slightly embedded in the cage 10 are exactly transmitted to the corresponding guide hole group 204 of the telescopic rod 302 of the pressing cylinder along with the cage 10.

[0091] Optionally, the positions of the first limiting portion 110 and the second limiting portion 120 are adjustable to adapt to different models of the cage 10.

[0092] By physical limiting, it ensures that the cage 10 rotates a fixed angle each time, so that the material hole group 203 accurately rotates to the guide hole group 204 station, avoiding the situation that the balls cannot be aligned with the pressing position due to the deviation of the rotation angle. In addition, the adjustable position design allows for adapting different specifications of the cage 10 (such as different numbers of embedding holes 101). Only by adjusting the position of the limiting portion can the production be switched, reducing the changeover time and improving the flexibility of the production line.

[0093] Optionally, it further includes: a second base 130, which includes a blanking area 131 and an installation area 133. The blanking area 131 is provided with a plurality of through blanking openings 132, and the blanking openings 132 are communicated with the material hole group 203 through pipelines; a material bin 140, which includes a bottom plate 141 and a bin body 142 arranged circumferentially around the bottom plate 141, and the edge of the bottom plate 141 is spaced from the inner ring surface of the bin body 142 by a preset distance to form a blanking opening 143; wherein, the blanking openings 132 are located below and communicated with the blanking opening 143, and the material bin 140 can rotate relative to the second base 130 to make the balls in the material bin 140 roll and enter the blanking openings 132 from the blanking opening 143.

[0094] In this embodiment, through the rotation of the storage bin 140 and the action of gravity, the full-automatic conveying of the ball bearings from the storage bin 140 to the material hole group 203 is realized, completely replacing the traditional manual feeding mode one by one, and significantly improving the feeding efficiency. The rotation of the storage bin 140 enables the ball bearings to continuously roll to the blanking port 143. With the pipeline connecting the material hole group 203, continuous feeding can be achieved; the position design of the blanking port 143 and the discharging port 132 ensures a smooth flow path of the ball bearings and avoids accumulation and blockage.

[0095] Optionally, along the direction from the center to the edge of the bottom plate 141, the bottom plate 141 is inclined downward from top to bottom, so that under the action of gravity, the ball bearings automatically roll to the blanking port 143 and then enter the discharging port 132 from the blanking port 143.

[0096] The bottom plate 141 is inclined from the center to the edge, and the ball bearings automatically roll towards the blanking port 143 under the action of gravity. Using gravity to replace mechanical power to drive the movement of the ball bearings reduces energy consumption; the design of the inclination angle optimizes the rolling speed of the ball bearings to ensure that the feeding rhythm matches the pressing process. The inclined bottom plate 141 enables the ball bearings to naturally gather towards the blanking port 143, avoiding the accumulation of ball bearings at the bottom of the storage bin 140, ensuring that a fixed quantity of ball bearings can be stably output during each rotation, and ensuring that the ball bearings fill the channels of each material hole in sequence.

[0097] Optionally, a support plate 144 is provided between the bottom plate 141 and the storage bin 140. The bottom of the support plate 144 is arranged to avoid the blanking port 143 so that the ball bearings can roll smoothly. The support plate 144 is used to stir the ball bearings in the storage bin 140. When the support plate 144 rotates with the storage bin 140, it stirs the ball bearings, breaking the stacked state of the ball bearings and preventing the interruption of feeding caused by caking due to static placement; at the same time, it enables the ball bearings to randomly roll to the blanking port 143 to avoid wear on a single path. In addition, the bottom avoidance design ensures that the support plate 144 does not hinder the blanking of the ball bearings, and forms a collaborative work with the blanking port 143 to improve the reliability of feeding.

[0098] Optionally, the support plate 144 is of a frame structure to reduce weight. The frame structure reduces the weight of the support plate 144, reduces the rotational load of the storage bin 140, and makes it easier for the swing cylinder 150 to drive; at the same time, it reduces the contact area between the support plate 144 and the ball bearings, reduces the frictional resistance, and improves the stirring efficiency.

[0099] Optionally, it further includes a rotating shaft 134 vertically inserted into the second base 130. The storage bin 140 is provided with a coaxial sleeve 145 at the center of the bottom plate 141. The sleeve 145 is sleeved on the rotating shaft 134 and can rotate relative to the rotating shaft 134.

[0100] In this embodiment, the rotating shaft 134 provides a stable rotation axis to reduce the shaking of the silo 140; the cooperation between the sleeve 145 and the rotating shaft 134 reduces the rotational friction, enabling the silo 140 to start and stop quickly and swing reciprocally under the drive of the swing cylinder 150. Additionally, the bushing structure disperses the load of the silo 140, avoiding direct wear on the second base 130 and extending the service life of the device.

[0101] Optionally, three sides of the support plate 144 can be respectively connected to the silo body 142, the bottom plate 141, and the sleeve 145. The multi-sided connection makes the support plate 144 and the silo 140 form a rigid whole, ensuring synchronous agitation of the balls during rotation and preventing agitation failure caused by loose connections; meanwhile, it enhances the structural strength of the silo 140 to adapt to high-frequency swinging working conditions.

[0102] Optionally, it further includes: a silo cover 146, covering the silo body 142 to prevent external foreign objects from entering the storage space enclosed by the silo body 142. In this way, it helps prevent dust and debris from entering the silo 140 and contaminating the balls, avoiding foreign objects from blocking the material discharge port 143 or the material hole group 203 and affecting the pressing quality; meanwhile, it reduces the risk of ball oxidation and maintains surface accuracy.

[0103] Optionally, it further includes: a swing cylinder 150, disposed in the installation area 133 of the second base 130, and its telescopic rod is rotatably connected to the silo 140, for driving the silo 140 to rotate through the telescopic movement of the telescopic rod.

[0104] The telescopic drive of the swing cylinder 150 makes the silo 140 swing a specific angle, enabling the balls to continuously fall into the blanking port 132. Cooperating with the action of the cutting cylinder 802 realizes continuous feeding to ensure an adequate supply of balls in the material holes. Additionally, the swing cylinder 150 only needs to swing intermittently to complete the feeding, without continuous operation, which is more energy-efficient than motor drive.

[0105] Optionally, the telescopic rod of the swing cylinder 150 is connected to the silo 140 through an adapter rod 151, where one end of the adapter rod 151 is fixedly connected to the silo 140 and the other end is rotatably connected to the telescopic rod of the swing cylinder 150.

[0106] Converting the linear motion of the swing cylinder 150 into the swing motion of the silo 140, the structure is simple and reliable; the rotational connection allows for an angular change between the adapter rod 151 and the telescopic rod, adapting to the rotation trajectory of the silo 140 and avoiding stress concentration caused by rigid connection.

[0107] Optionally, when the swing cylinder 150 makes a telescopic movement, it drives the adapter rod 151 to rotate, thereby driving the silo 140 to rotate. During the rotation of the silo 140, the balls inside it shake reciprocally, and under the action of gravity, they roll autonomously to the material discharge port 143, pass through the pipeline from the blanking port 132 to the material hole group 203, and wait to be embedded and connected with the cage 10.

[0108] Optionally, the second base 130 may be connected to the first base 70 via a mounting bracket 180 , wherein the second base 130 is located above the first base 70 .

[0109] The silo 140 is higher than the positioning seat 20, so that the balls can flow from the silo 140 through the pipeline into the material hole group 203 by gravity, without the need for additional power lifting, simplifying the system structure; the upper and lower layers are compactly arranged, saving horizontal installation space.

[0110] Optionally, it further includes: a first detection sensor 160, which is arranged above the positioning seat 20 to detect the axial installation status of the ball of the corresponding cage 10; wherein the first detection sensor 160 is arranged corresponding to the guide hole group 204 and arranged along the circumferential direction of the cage 10. That is, a first detection sensor 160 is arranged above a guide hole group 204, and the first detection sensor 160 detects the press-fitting effect of the telescopic rod extending from the guide hole group 204 to press the ball into the cage 10.

[0111] For example, the retainer 10 needs to be press-fitted with 5 balls in the axial direction. After the press-fitting is completed, the retainer 10 is ejected by the ejection cylinder 60, and the first detection sensor 160 works. If 5 balls are detected, it means that the 5 balls in the current axial direction are press-fitted in place. If the number of balls detected is less than 5, it means that the balls in the current axial direction of the retainer 10 are missing, that is, unqualified, and need to be re-press-fitted and tested.

[0112] After the press-fitting is completed, the first detection sensor 160 detects the number of balls in real time during the ejection process of the retainer 10 (e.g., 5 balls in the axial direction need to trigger 5 signals), automatically determines whether the press-fitting is qualified, and replaces the traditional manual visual inspection to improve the detection efficiency and accuracy. If the ball is detected to be missing, it can automatically trigger an alarm or reflow rework to prevent unqualified products from flowing into the next process, significantly improving the product qualification rate.

[0113] Optionally, it further includes: a fixing ring 170, which is detachably connected to the upper surface of the positioning seat 20 and is coaxially arranged with the reference limit hole 201. The fixing ring 170 is hollow inside to prevent the retaining frame 10 from being ejected. In actual application, the retaining frame 10 is ejected from bottom to top through the fixing ring 170.

[0114] Optionally, the first detection sensor 160 is inserted into the fixing ring 170 for fixing according to the position of the embedding hole 101 of the holder 10 . The detection end of the first detection sensor 160 is aligned with the center line of the fixing ring 170 .

[0115] The fixed ring 170 is coaxially arranged with the reference limit hole 201 to ensure that the detection end of the sensor is aligned with the axial center of the cage 10, accurately capturing the ball signal; the detachable design facilitates adjusting the sensor position according to different specifications of the cage 10 (such as different numbers of axial holes). In addition, the hollow setting of the fixed ring 170 allows the cage 10 to be ejected from bottom to top, avoiding interference with the fixed ring 170; at the same time, it provides an installation reference for the sensor to ensure that the detection action and the ejection action are carried out synchronously.

[0116] In this embodiment, through the full-process design of automatic feeding (feed bin 140 and swing cylinder 150) - precise positioning (limit shaft 50 and flange 205) - synchronous press-fitting (multi-expansion rod) - real-time detection (first detection sensor 160 and second detection sensor 40) - automatic unloading (ejection cylinder 60), a complete automatic press-fitting closed loop is formed. Compared with the traditional manual process, through the multi-station synchronous operation and the connection of the full-automatic process, the single press-fitting efficiency is increased by 5-6 times, significantly shortening the processing cycle of the unit product; the dual positioning mechanism of the limit shaft 50 and the flange 205, combined with the synchronous press-fitting technology of the multi-expansion rod, reduces the error of the press-fitting position and ensures product consistency; the dual-sensor real-time detection system (cage 10 in-place detection and ball number detection) forms an anti-missing loading closed loop, effectively reducing the missing loading rate and greatly improving the product qualification rate; in addition, the modular structure design (such as adjustable limit part, detachable cylinder assembly) supports quickly switching different models of cages 10, and can be compatible with diverse production requirements through parameter adjustment, significantly reducing the production line transformation cost.

[0117] The above description and the drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments only represent possible variations. Unless explicitly required, the individual components and functions are optional, and the order of operations can vary. Some parts and features of some embodiments can be included in or replaced by parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims, and the above embodiments should be regarded as exemplary and non-limiting.

Claims

1. Ball pressing and fitting device for cage, characterized in that Comprising: A positioning seat, with a reference limiting hole formed in the middle, and a set of material holes and a set of guide holes arranged at intervals along the inner ring surface of the reference limiting hole; A pressing cylinder, including a telescopic rod, and the telescopic rod is correspondingly arranged with the set of guide holes so that the telescopic rod extends through the set of guide holes; Wherein, the cage is inserted into the reference limiting hole and can rotate relative to the positioning seat, so that the balls introduced from the set of material holes rotate with the cage to the set of guide holes, and under the action of the telescopic rod of the pressing cylinder, are embedded in the embedding holes of the cage.

2. The ball press-fitting device according to claim 1, wherein The set of material holes includes a plurality of material holes, and the set of guide holes includes a plurality of guide holes; Wherein, the plurality of material holes and the plurality of guide holes are respectively arranged along the axial direction of the reference limiting hole, and both the material holes and the guide holes are through-hole structures.

3. The ball press-fitting device according to claim 1, characterized in that, Further comprising: A limiting shaft, inserted into the reference limiting hole of the positioning seat and the cage, for restricting the radial displacement of the cage.

4. The ball pressing device according to claim 3, wherein A plurality of axially arranged grooves are formed on the outer peripheral surface of the limiting shaft, and the distance between adjacent grooves matches the distance between adjacent embedding holes on the cage.

5. The ball press-fitting device according to claim 4, wherein Further comprising: An ejecting cylinder, arranged below the positioning seat, and the telescopic rod of the ejecting cylinder is inserted into the reference positioning hole and moves in and out along the grooves of the limiting shaft, for abutting against the cage and making an extending movement to eject the cage.

6. The ball press-fitting device according to claim 1, characterized in that, Further comprising: A first base for mounting the positioning seat; A rotary driving mechanism, arranged on the first base and connected to the cage, for driving the cage to rotate relative to the positioning seat.

7. The ball pressing device according to claim 6, wherein The rotary driving mechanism includes: A connecting rod, with the first end connected to the cage; A blanking cylinder, and the telescopic rod thereof is rotatably connected to the second end of the connecting rod; Wherein, when the telescopic rod of the blanking cylinder makes an extending and retracting movement, the first end of the connecting rod drives the cage to rotate.

8. The ball press-fitting device according to claim 1, wherein Further comprising: A second base, including a blanking area and a mounting area, with a plurality of through blanking openings formed in the blanking area, and the blanking openings are communicated with the set of material holes through pipelines; A material bin, arranged on the second base, including a bottom plate and a bin body arranged circumferentially around the bottom plate, and the edge of the bottom plate is spaced from the inner ring surface of the bin body by a preset distance to form a blanking opening; Wherein, the blanking openings are located below and communicated with the blanking opening, and the material bin can rotate relative to the second base so that the balls in the material bin roll and enter the blanking openings from the blanking opening.

9. The ball press-fitting device according to claim 8, characterized in that, Further comprising: A swing cylinder, arranged in the mounting area of the second base, and the telescopic rod thereof is rotatably connected to the material bin, for driving the material bin to rotate through the telescopic movement of the telescopic rod.

10. The ball press-fitting device according to any one of claims 1 to 9, characterized in that, Further comprising: A first detection sensor, arranged above the positioning seat, for detecting the ball installation condition in the axial direction of the corresponding cage; Wherein, the first detection sensor is correspondingly arranged with the set of guide holes.

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