Needle bearing retainer feeding mechanism

Abstract

The utility model discloses a needle bearing retainer feeding mechanism which comprises a shell, a bearing fixed in the shell, a shaft sleeve rotationally connected to an inner hole of the bearing, a feeding shaft installed in the shaft sleeve, a telescopic driving device and a rotation driving device, wherein the telescopic driving device and the rotation driving device are fixed outside the shell. The feeding shaft is in sliding connection with the shaft sleeve through a key groove, the shaft sleeve is in transmission connection with the rotation driving device, and the feeding shaft is in transmission connection with the telescopic driving device. The telescopic driving device drives the feeding shaft to move forwards and backwards in the axial direction, and the rotating driving device drives the shaft sleeve to rotate and drives the feeding shaft to rotate synchronously. Automatic feeding, returning and rotating of the feeding shaft are achieved, so that automatic needle mounting of the retainer is driven, the structure is simple, mounting is convenient, and operation of workers is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing assembly machinery, in particular to a feeding mechanism for a needle roller bearing retainer. Background Art

[0002] Needle roller bearings are roller bearings with cylindrical rollers that are thin and long relative to their diameter. Such rollers are called needle rollers. Despite their small cross-section, the bearings still have a high load-bearing capacity. Needle roller bearings are equipped with thin and long rollers, so the radial structure is compact. When the inner diameter size and load capacity are the same as other types of bearings, the outer diameter is the smallest, which is particularly suitable for support structures with limited radial installation dimensions.

[0003] At present, most of the domestic bearings are loaded with needles manually, and workers press the needle rollers into the bearings. The manual method requires a lot of human resources, so the labor intensity is high and the assembly efficiency is low. The main principle of the existing automatic needle roller loading mechanism is to feed the retaining frame into the loading mechanism through the feeding shaft. The loading mechanism is provided with an automatic needle drop channel. The feeding shaft and the loading mechanism clamp the retaining frame, and the feeding shaft drives the rotation of the retaining frame to realize the automatic loading of the needle roller. For example, the published patent: CN116733856A specifically relates to a needle roller retaining frame loading device, including a loading mold, a needle collecting through hole for placing the retaining frame is provided at the center, a lower needle track is provided inside the loading mold, a feed port is provided on one side of the loading mold, and one side of the loading mold is provided with a feeding port. A positioning shaft is provided on one side and a unloading assembly is provided on the other side. The needle roller is fed into the lower needle track through the feed port by the feeding device. The needle roller falls from the lower needle track to the retaining frame in the needle collection hole due to gravity. The retaining frame is driven to rotate by the positioning shaft, so that the needle roller falls into the retaining frame groove in turn to complete the needle loading work. When the retaining frame is loaded with needles, the positioning shaft moves out of the needle collection hole, and the retaining frame is driven to move and send out by the unloading assembly, so as to obtain the retaining frame after the needle is loaded, which solves the problem that the existing internal pressure assembly method is easy to damage the retaining frame, resulting in a low yield of product assembly. The positioning shaft of the device needs to be able to drive the retaining frame to move forward and drive the retaining frame to rotate, and can drive the retaining frame to rotate during needle loading, but the above-mentioned patent does not solve the above problems.

[0004] In view of the above problems, it is necessary to provide a needle roller bearing cage feeding mechanism with a simple structure and convenient operation to realize the functions of telescopic and rotating the feeding shaft. Utility Model Content

[0005] The utility model aims to provide a feeding mechanism for a needle roller bearing cage, which overcomes the above-mentioned defects in the prior art and realizes the functions of telescoping and rotating the feeding shaft.

[0006] The technical solution to achieve the purpose of the utility model is: a needle roller bearing retainer feeding mechanism, comprising a shell, a bearing fixed inside the shell, a sleeve rotatably connected to the inner hole of the bearing, a feeding shaft installed inside the sleeve, a telescopic drive device and a rotation drive device fixed to the outside of the shell; the feeding shaft and the sleeve are slidably connected via a keyway, the sleeve is transmission-connected to the rotation drive device, and the feeding shaft is transmission-connected to the telescopic drive device; the telescopic drive device drives the feeding shaft to move forward and backward in the axial direction, and the rotation drive device drives the sleeve to rotate and drives the feeding shaft to rotate synchronously.

[0007] As a preferred embodiment, the shaft sleeve and the bearing are interference fit.

[0008] As a preferred embodiment, a slide groove is provided in the shaft sleeve along the axial direction, and a sliding key is correspondingly provided on the feeding shaft.

[0009] As a preferred embodiment, the telescopic driving device is a cylinder, one end of the feeding shaft is connected to the output shaft of the cylinder, and the other end is provided with a placement portion of the retaining frame, and the placement portion is used to be inserted in the retaining frame.

[0010] As a preferred embodiment, the diameter of the feeding shaft is not less than the diameter of the retaining frame.

[0011] As a preferred embodiment, the rotation drive device includes a motor fixed to the housing, a pulley fixed to the output shaft of the motor, and a transmission belt, and the transmission belt is tensioned on the pulley and the bushing.

[0012] By adopting the above technical solution, the utility model has the following beneficial effects:

[0013] (1) The utility model can realize the automatic feeding, retracting and rotation of the feeding shaft, thereby driving the automatic needle loading of the retaining frame. It has a simple structure, is easy to install, and is also convenient for workers to operate.

[0014] (2) The utility model has an interference fit between the bearing and the sleeve, has fewer parts and is easy to install.

[0015] (3) The utility model cooperates the shaft sleeve with the feed shaft sliding key, so that the feed shaft can be easily moved axially in the shaft sleeve, has a simple structure, and is easy to install and maintain.

[0016] (4) One end of the feeding shaft of the utility model is connected to the cylinder, and the other end is provided with a retainer placement portion, so that the retainer can be pushed into the needle loading mechanism, which is convenient for automatic feeding of the retainer.

[0017] (5) The rotation driving mechanism of the utility model adopts belt drive, which has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in conjunction with the accompanying drawings.

[0019] Figure 1 A cross-sectional view of a needle roller bearing cage feeding mechanism.

[0020] The numbers in the accompanying drawings are: 1, housing; 2, bearing; 3, sleeve, 31, slide groove; 4, feeding shaft, 41, sliding key, 42, placement part; 5, telescopic driving device; 6, rotating driving device, 61, motor, 62, pulley, 63, transmission belt; 100, retaining frame. DETAILED DESCRIPTION

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the embodiments of the present utility model, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present utility model.

[0026] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly stipulated and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the scope of protection of the utility model.

[0027] (Example)

[0028] See Figure 1 A needle roller bearing cage feeding mechanism is used for assembling needle rollers of a cage 100, comprising a housing 1, a bearing 2 fixed inside the housing 1, a sleeve 3 rotatably connected to the inner hole of the bearing 2, a feeding shaft 4 installed inside the sleeve 3, a cylinder 5 fixed outside the housing 1 and a rotating drive device 6; the sleeve 3 and the inner hole of the bearing 2 are interference fit; the feeding shaft 4 is slidably connected to the sleeve 3 through a keyway, a slide groove 31 is axially provided in the sleeve 3, and a sliding key 41 is correspondingly provided on the feeding shaft 4, the feeding shaft 3 can move axially in the sleeve and can rotate synchronously with the sleeve 3.

[0029] One end of the feeding shaft 4 is connected to the output shaft of the cylinder, and the other end is provided with a placement portion 42 of the retaining frame 100. The placement portion 42 is used to be inserted into the retaining frame 100. The diameter of the feeding shaft 4 is not less than the diameter of the retaining frame 100. The cylinder pushes the feeding shaft 4 forward to push the retaining frame 100 into the needle loading position of the needle loading mechanism.

[0030] The rotation drive device 6 includes a motor 61 fixed to the housing 1, a pulley 62 fixed to the output shaft of the motor 61, and a transmission belt 63. The transmission belt 63 is tensioned on the pulley 62 and the sleeve 3. The motor 61 drives the sleeve 3 to rotate through the transmission belt, and the sleeve 3 drives the feeding shaft 4 to rotate synchronously.

[0031] In this embodiment, when the cage feeding mechanism is working, the cage 100 is placed on the placement portion 42 of the feeding shaft 4, the cylinder 5 switch is turned on, the cylinder 5 pushes the feeding shaft 4 to move forward along the axial direction, and the cage 100 is sent to the specified position, and the motor 61 of the rotation drive device is turned on. The motor 61 drives the sleeve 3 and the feeding shaft 4 to rotate synchronously through the transmission belt. When the feeding shaft withdraws, the switch of the motor 61 is turned off first, so that the feeding shaft 4 stops rotating; then the cylinder 5 retracts, so that the feeding shaft 4 retreats back to the original position.

[0032] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A needle roller bearing cage feeding mechanism, characterized in that: The invention comprises a housing (1), a bearing (2) fixed inside the housing (1), a sleeve (3) rotatably connected to the inner hole of the bearing (2), a feeding shaft (4) installed inside the sleeve (3), a telescopic drive device (5) and a rotation drive device (6) fixed outside the housing (1); the feeding shaft (4) is slidably connected to the sleeve (3) via a keyway, the sleeve (3) is transmission-connected to the rotation drive device (6), and the feeding shaft (4) is transmission-connected to the telescopic drive device (5); the telescopic drive device (5) drives the feeding shaft (4) to move forward and backward along the axial direction, and the rotation drive device (6) drives the sleeve (3) to rotate and drives the feeding shaft (4) to rotate synchronously.

2. A needle roller bearing cage feeding mechanism according to claim 1, characterized in that: The shaft sleeve (3) and the bearing (2) are interference fit.

3. The needle roller bearing cage feeding mechanism according to claim 1, characterized in that: A sliding groove (31) is axially arranged in the shaft sleeve (3), and a sliding key (41) is correspondingly arranged on the feeding shaft (4).

4. The needle roller bearing cage feeding mechanism according to claim 1, characterized in that: The telescopic drive device (5) is a cylinder, one end of the feeding shaft (4) is connected to the output shaft of the cylinder, and the other end is provided with a placement portion (42) of the retaining frame (100), and the placement portion (42) is used to be inserted into the retaining frame (100).

5. A needle roller bearing cage feeding mechanism according to claim 4, characterized in that: The diameter of the feeding shaft (4) is not less than the diameter of the retaining frame (100).

6. The needle roller bearing cage feeding mechanism according to claim 1, characterized in that: The rotary drive device (6) comprises a motor (61) fixed to the housing (1), a pulley (62) fixed to the output shaft of the motor (61), and a transmission belt (63), wherein the transmission belt (63) is tensioned on the pulley (62) and the shaft sleeve (3).

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