Needle mounting mechanism for drawn cup needle roller bearing

Abstract

The utility model discloses a punching outer ring needle roller bearing needle assembling mechanism which is matched with a feeding shaft to complete needle roller assembling of a retainer, the punching outer ring needle roller bearing needle assembling mechanism comprises a needle assembling device and a material returning shaft device, the needle assembling device is provided with a needle assembling through hole and a needle discharging channel communicated with the needle assembling through hole, and the material returning shaft device is fixedly connected to one side of the needle assembling through hole. The feeding shaft is positioned on the other side of the needle mounting through hole; the material returning shaft device comprises a material returning shaft and a driving device which are connected with each other; the feeding shaft conveys a retainer to the needle installing through hole and is matched with the material returning shaft to clamp the retainer, and the driving device drives the material returning shaft to be matched with the feeding shaft and the retainer to rotate synchronously to complete needle installing. According to the utility model, the feeding shaft and the discharging shaft can clamp the retainer to rotate synchronously to finish automatic needle mounting, the needle mounting effect is more stable, the damage to the retainer is reduced, and the yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing assembly machinery, in particular to a needle assembly mechanism for a stamped outer ring needle roller bearing. 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 bearing needles are filled 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. For example, the patent: CN116733856A specifically relates to a needle roller retainer needle installation device, including a needle installation mold, a needle collection through hole for placing the retainer is provided at the center, a lower needle track is provided inside the needle installation mold, a feed port is provided on one side of the needle installation mold, a positioning shaft is provided on one side of the needle installation mold, and a discharge assembly is provided on the other side. The needle roller is sent into the lower needle track through the feed port by a feeding device, and the needle roller falls from the lower needle track to the retainer in the needle collection through hole due to gravity. The retainer is driven to rotate by the positioning shaft, so that the needle roller falls into the retainer groove in turn, and the needle installation work is completed. When the retainer is loaded, the positioning shaft moves out of the needle collection through hole, and the retainer is driven to move and send out by the discharge assembly, so as to obtain the retainer after the needle is installed, which solves the problem that the retainer is easily damaged by the existing internal pressure assembly method, resulting in a low yield of product assembly. However, when the positioning shaft drives the retaining frame to rotate, the retaining frame is pressed tightly between the positioning shaft and the material removal shaft, and there is a large friction between the retaining frame and the material removal shaft, resulting in relative rotation, which will cause damage to the retaining frame. It is also possible that the retaining frame cannot rotate with the positioning shaft due to excessive pressure, thereby affecting the needle installation.

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

[0005] The utility model aims to provide a needle-installing mechanism for a stamped outer ring needle roller bearing, which overcomes the above-mentioned defects in the prior art.

[0006] The technical solution to achieve the purpose of the utility model is: a needle loading mechanism for a stamped outer ring needle roller bearing, which cooperates with a feeding shaft to complete the roller needle assembly of a retaining frame, including a needle loading device and a stripping shaft device, the needle loading device is provided with a needle loading through hole and a lower needle channel connected to the needle loading through hole, the stripping shaft device is fixedly connected to one side of the needle loading through hole, and the loading shaft is located on the other side of the needle loading through hole; the stripping shaft device includes a stripping shaft and a driving device that are connected to each other, and the needle loading through hole, the stripping shaft and the loading shaft are coaxially arranged; the loading shaft transports the retaining frame to the needle loading through hole, the driving device drives the stripping shaft and the loading shaft to cooperate to align the roller needle window of the retaining frame with the lower needle channel, the driving device drives the stripping shaft and the retaining frame to rotate synchronously to complete the needle loading, and the driving device drives the stripping shaft to push the retaining frame out of the needle loading through hole axially while blocking the roller needle in the lower needle channel from entering the needle loading through hole.

[0007] As a preferred embodiment, the driving device includes a bearing seat, a bearing, a sleeve and a motor. The bearing seat is fixedly connected to the needle loading device, the bearing is fixed inside the bearing seat, the sleeve is rotatably connected in the inner hole of the bearing, the material withdrawal shaft is installed in the sleeve, and the motor output shaft is fixedly connected to the sleeve.

[0008] As a preferred embodiment, a spring is axially arranged inside the sleeve, a baffle is fixed on the material withdrawal shaft, one end of the material withdrawal shaft is inserted into the inner hole of the spring, one end of the spring is fixedly connected to the inner wall of the sleeve and the other end is connected to the baffle.

[0009] As a preferred embodiment, the shaft sleeve and the bearing seat are interference fit.

[0010] As a preferred embodiment, the shaft sleeve is slidably connected to the material withdrawal shaft via a keyway.

[0011] As a preferred embodiment, the stripping shaft is chamfered at one end close to the needle loading through hole, the diameter of the stripping shaft is not less than the diameter of the retaining frame, and the diameter of the chamfered end face of the stripping shaft is smaller than the diameter of the retaining frame.

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

[0013] (1) The main principle of the existing automatic roller needle loading mechanism is to feed the retaining frame into the loading mechanism through the feeding shaft, and an automatic needle drop channel is provided in the loading mechanism. The feeding shaft and the loading mechanism clamp the retaining frame, and the loading shaft drives the retaining frame to rotate to realize automatic loading of the roller needle. The utility model can realize the synchronous rotation of the feeding shaft and the unloading shaft clamping the retaining frame to complete the automatic loading of the needle, and the loading effect is more stable, and the relative rotation of the retaining frame and the unloading shaft is avoided, thereby reducing the damage of the retaining frame and improving the yield rate.

[0014] (2) The utility model has an interference fit between the bearing seat and the shaft 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) The matching design of the chamfer of the material return shaft of the utility model can facilitate the upward movement of the retaining frame under the pressure of the material loading shaft along the chamfer guide when loading materials, thereby achieving the purpose of clamping the retaining frame, and controlling the retaining frame and the needle loading through hole to be coaxial, so that the retaining frame can fall into the needle loading through hole, thereby better realizing the alignment of the needle lowering channel and the needle dropping window of the retaining frame, making the needle dropping effect more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 It is a cross-sectional view of the needle loading mechanism of a stamped outer ring needle roller bearing.

[0019] Figure 2 This is an enlarged assembly view of the stripping shaft and spring of a needle loading mechanism for a stamped outer ring needle roller bearing.

[0020] Figure 3 This is an enlarged view of the stripper shaft, retainer, and loading shaft when the needle is installed.

[0021] Figure 4 This is an enlarged view of the stripping shaft pushing out the retaining bracket.

[0022] The numbers in the accompanying drawings are: 1, needle loading device, 11, needle loading through hole, 12, needle lowering channel; 2, material unloading shaft device, 21, material unloading shaft, 211, baffle; 22, driving device, 221, bearing seat, 222, bearing, 223, bushing, 224, motor, 225, spring, 226, spring groove; 3, loading shaft; 100, retaining frame; 101, needle roller. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] (Example)

[0030] See Figure 1 and Figure 2A needle loading mechanism for a stamped outer ring needle roller bearing cooperates with a feeding shaft 3 to complete the needle roller assembly of a retaining frame 100, including a needle loading device 1 and a discharge shaft device 2. The needle loading device 1 is provided with a needle loading through hole 11 and a lower needle channel 12 connected to the needle loading through hole 11. The discharge shaft device 2 is fixedly connected to one side of the needle loading through hole 11, and the feeding shaft 3 is located on the other side of the needle loading through hole 11.

[0031] The material stripping shaft device 2 includes a material stripping shaft 21 and a driving device 22 connected to each other. The driving device 22 includes a bearing seat 221, a bearing 222, a sleeve 223 and a motor 224. The bearing seat 221 is fixedly connected to the needle loading device 1. The bearing 222 is fixed inside the bearing seat 221 by an interference fit. The sleeve 223 is rotatably connected to the inner hole of the bearing 222. The material stripping shaft 21 is installed in the sleeve 223. The output shaft of the motor 224 is fixedly connected to the sleeve 223 and The shaft sleeve 223 can be driven to rotate. A spring groove 226 is axially arranged on the inner wall of the shaft sleeve 223 near the needle loading through hole 11. A spring 225 is arranged in the spring groove 226. A baffle 211 is fixed on the material removal shaft 21. One end of the material removal shaft 21 is inserted into the inner hole of the spring 225. The baffle 211 is located outside the shaft sleeve 223 to prevent the material removal shaft 21 from completely entering the shaft sleeve. One end of the spring 225 is fixedly connected to the bottom wall of the spring groove 226, and the other end is connected to the baffle 211. A sliding groove is arranged inside the shaft sleeve 223, and a sliding key is arranged to cooperate with the material removal shaft 21. The material removal shaft 21 is connected to the shaft sleeve 213 through the sliding key. A chamfer is arranged at one end of the material removal shaft 21 near the needle loading through hole 11. The diameter of the material removal shaft 21 is not less than the diameter of the retaining frame 100, and the diameter of the end face of the material removal shaft 41 after chamfering is less than the diameter of the retaining frame 100.

[0032] See Figure 3 and Figure 4 , the needle loading hole 11, the material stripping shaft 21 and the loading shaft 3 are coaxially arranged, and the material stripping shaft 21 elastically retracts and contracts in the needle loading hole 11 along the axial direction; the loading shaft 3 transports the retaining frame 100 to the needle loading hole 11, and the material stripping shaft 21 cooperates with the loading shaft 3 under the elastic force of the spring 225 to clamp the retaining frame 100, and aligns the needle roller window of the retaining frame 100 with the lower needle channel 12, and the motor 224 drives the sleeve 223 and drives the material stripping shaft 21 and the retaining frame 100 to rotate synchronously, so that the needle roller 101 falls into the needle roller window of the retaining frame 100 in turn. After the needle loading is completed, the loading shaft 3 withdraws, and the material stripping shaft 21 is reset by the elastic force of the spring 225, and the retaining frame with the needle loaded is pushed out of the needle loading hole 11. At the same time, the material stripping shaft 21 blocks the needle roller in the lower needle channel 12 from entering the needle loading hole 11, and waits for the next round of needle loading operation of the next round of loading shaft 3.

[0033] The main principle of the existing automatic needle roller loading mechanism is to feed the retaining frame into the needle loading hole, which is provided with an automatic needle drop channel, and realize the automatic loading of the needle roller by the rotation of the retaining frame. In this embodiment, the retaining frame can be first placed in the placement part of the feeding shaft, and the feeding shaft pushes the retaining frame into the needle loading through hole. The retaining frame is clamped by the feeding shaft and the unloading shaft together, and the motor of the rotation drive device is turned on to realize the synchronous rotation of the retaining frame and the feeding shaft, thereby completing the automatic needle loading. The needle loading effect of this embodiment is more stable, and the relative rotation of the retaining frame and the unloading shaft is avoided, which reduces the damage of the retaining frame and improves the yield rate.

[0034] 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 assembly mechanism for a stamped outer ring needle roller bearing, which cooperates with a feeding shaft (3) to complete the needle assembly of a retainer (100), characterized in that: The invention comprises a needle loading device (1) and a material removal shaft device (2), wherein the needle loading device (1) is provided with a needle loading through hole (11) and a needle lowering channel (12) connected to the needle loading through hole (11), the material removal shaft device (2) is fixedly connected to one side of the needle loading through hole (11), and the material loading shaft (3) is located on the other side of the needle loading through hole (11); the material removal shaft device (2) comprises a material removal shaft (21) and a driving device (22) which are connected to each other, and the needle loading through hole (11), the material removal shaft (21) and the material loading shaft (3) are coaxially arranged; the material loading shaft (3 ) transports the retaining frame (100) to the needle loading hole (11), the driving device (22) drives the material removal shaft (21) and the material loading shaft (3) to cooperate to align the needle roller window of the retaining frame (100) and the lower needle channel (12), the driving device (22) drives the material removal shaft (21) and the retaining frame (100) to rotate synchronously to complete the needle loading, and the driving device (22) drives the material removal shaft (21) to push the retaining frame (100) out of the needle loading hole (11) in the axial direction while blocking the needle roller in the lower needle channel (12) from entering the needle loading hole (11).

2. The needle loading mechanism of a stamped outer ring needle roller bearing according to claim 1, characterized in that: The driving device (22) comprises a bearing seat (221), a bearing (222), a sleeve (223) and a motor (224); the bearing seat (221) is fixedly connected to the needle loading device (1); the bearing (222) is fixed inside the bearing seat (221); the sleeve (223) is rotatably connected in the inner hole of the bearing (222); the material removal shaft (21) is installed in the sleeve (223); and the output shaft of the motor (224) is fixedly connected to the sleeve (223).

3. The needle loading mechanism of a stamped outer ring needle roller bearing according to claim 2, characterized in that: A spring (225) is axially arranged inside the shaft sleeve (223); a baffle (211) is fixed on the material-removing shaft (21); one end of the material-removing shaft (21) is inserted into the inner hole of the spring (225); one end of the spring (225) is fixedly connected to the inner wall of the shaft sleeve (223) and the other end is connected to the baffle (211).

4. The needle loading mechanism of a stamped outer ring needle roller bearing according to claim 2, characterized in that: The bearing (222) and the shaft sleeve (223) are interference fit.

5. The needle loading mechanism of a stamped outer ring needle roller bearing according to claim 3, characterized in that: The shaft sleeve (223) is slidably connected to the material-removing shaft (21) via a keyway.

6. The needle loading mechanism of a stamped outer ring needle roller bearing according to claim 1, characterized in that: The end of the material stripping shaft (21) close to the needle loading through hole (11) is provided with a chamfer, the diameter of the material stripping shaft (21) is not less than the diameter of the retaining frame (100), and the diameter of the end surface of the material stripping shaft (21) after chamfering is less than the diameter of the retaining frame (100).

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