Miniature needle bearing disposable needle assembling mechanism

Abstract

The invention relates to the technical field of bearing machining, in particular to a miniature needle bearing one-time needle mounting mechanism which comprises a positioning mechanism, a needle falling mechanism and a press mounting mechanism, the positioning mechanism is used for positioning a retainer and a needle roller, and the needle falling mechanism is used for feeding the needle roller into the positioning mechanism; and the press-fitting mechanism is used for pressing the roller pin on the lifting support into the retainer from the inner side. According to the one-time needle mounting mechanism for the miniature needle bearing, the positioning mechanism, the needle falling mechanism and the press mounting mechanism which are specially designed are matched, automatic one-time needle mounting can be conducted on the miniature needle bearing with the small size, the needle mounting efficiency is greatly improved, the labor intensity of operators is reduced, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of needle roller bearings, and in particular to a disposable needle loading mechanism for a miniature needle roller bearing. Background Art

[0002] Some existing miniature needle roller bearings are small in size and cannot be automatically installed by automated equipment, so they are all installed manually, which has low assembly efficiency. In addition, the needles of such miniature needle roller bearings need to be pressed into the needle roller groove from the inside of the cage. Since the space inside the cage is small, it is difficult to install the needles, resulting in a high production cost for such miniature needle roller bearings. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a disposable needle loading mechanism for a micro needle roller bearing which can realize automatic needle loading, has high needle loading efficiency and high product quality.

[0004] The present invention is achieved through the following technical solutions:

[0005] The present invention provides a disposable needle-loading mechanism for a micro needle roller bearing, including a positioning mechanism, a needle-dropping mechanism and a press-loading mechanism;

[0006] The positioning mechanism is used to position the retainer and the needle roller, and includes a positioning seat, a guide column, a lifting support, a first lifting drive and a rotation drive. The positioning seat is provided with a positioning groove capable of positioning the retainer, and the center of the positioning seat has a through hole, and a lifting support capable of supporting the needle roller is arranged in the through hole. The first lifting drive is connected to the lifting support, and the first lifting drive can drive the lifting support to move up and down along the through hole of the positioning seat. The center of the lifting support has a guide hole, and a guide column is arranged in the guide hole. The outer wall of the guide column is provided with a plurality of arc-shaped guide grooves capable of positioning the needle roller, and the rotation drive is connected to the guide column, and the rotation drive can drive the guide column to rotate axially;

[0007] The needle drop mechanism is correspondingly arranged at one side of the positioning mechanism, and is used to send the needle roller into the positioning mechanism, including a vibrating screen, a needle drop guide block, a second lifting drive, a clamping block and a clamping drive. A needle drop channel for the needle roller to fall is provided in the needle drop guide block, the vibrating screen is connected to the needle drop channel, the second lifting drive is connected to the needle drop guide block, the second lifting drive can drive the needle drop guide block to move up and down, the clamping block is correspondingly arranged at one side of the needle drop guide block, the clamping drive is connected to the clamping block, and the clamping drive can drive the clamping block to clamp the needle roller in the needle drop channel;

[0008] The pressing mechanism is correspondingly arranged above the positioning mechanism, and is used for pressing the needle rollers on the lifting support into the retaining frame from the inside, and includes a third lifting drive, a clamping seat, a plurality of push plates, a lever and a fourth lifting drive. The third lifting drive is connected to the clamping seat, and the third lifting drive can drive the clamping seat to move up and down, thereby clamping the retaining frame. The push plates are movably connected in the clamping seat and are correspondingly arranged one by one on the inner sides of the needle rollers on the lifting support. The outer sides of the push plates have arc-shaped grooves that match the needle rollers, and the inner sides of the push plates form sockets for the lever rods to be plugged in. The lever rods are correspondingly arranged above the sockets, and the bottom end of the lever rods is a conical structure. The fourth lifting drive is connected to the lever rod, and the fourth lifting drive can drive the lever rod to move up and down, so that the lever rods push the push plates to move outward, thereby pressing the needle rollers from the inside into the retaining frame.

[0009] In order to effectively compress the retainer, the compression seat includes a support, an outer cylinder and an inner cylinder. The outer cylinder is rotatably connected to the bottom end of the support, and the inner cylinder is fixed in the outer cylinder. The bottom end of the inner cylinder has a plurality of compression blocks that can compress the top end of the retainer.

[0010] Since the retaining frame is manually placed on the positioning seat, each needle roller groove of the retaining frame will have a certain deviation with each needle roller. In order to make the needle roller groove of the retaining frame correspond to each needle roller one by one, the pressing mechanism also includes a swinging component that can align the retaining frame with each needle roller, and the swinging component includes a swinging cylinder, a swinging block, a guide rail, a guide wheel and a rotating seat. The rotating seat is rotatably connected to the support and fixed to the outer cylinder. One end of the rotating seat has a U-shaped groove, the swinging block is slidably connected to the guide rail and connected to the swinging cylinder, the guide wheel is rotatably connected to the swinging block, and the guide wheel is arranged in the U-shaped groove of the rotating seat, the swinging cylinder can drive the swinging block to slide along the guide rail, so that the guide wheel rolls along the U-shaped groove, thereby driving the outer cylinder and the inner cylinder to rotate, and the inner cylinder drives the retaining frame to rotate so that the needle roller groove of the retaining frame corresponds to the needle roller one by one.

[0011] In order to prevent the retaining frame from continuing to rotate after positioning is completed, the positioning mechanism also includes a blocking component that can prevent the retaining frame from rotating. The blocking component includes a pushing cylinder and a pushing block. The pushing cylinder is connected to the pushing block. The pushing cylinder can drive the pushing block to move back and forth so that the pushing block is inserted into the roller needle groove of the retaining frame.

[0012] In order to accurately sense whether the retaining frame is rotated into place, thereby facilitating subsequent press-fitting, the positioning mechanism also includes a sensor capable of sensing whether the retaining frame is rotated into place.

[0013] In order to facilitate the movement and resetting of each push plate, the inner cylinder is provided with a plurality of guide grooves penetrating the inner and outer walls thereof, the push plate is slidably connected in the guide groove, the inner end of the push plate penetrates the inner wall of the inner cylinder, and has an arc-shaped block which is perpendicular to the horizontal plane and can push the needle roller into the needle roller groove of the retaining frame, and a socket for the lever to be plugged in is formed between the inner sides of the plurality of arc-shaped blocks, and the outer end of the push plate penetrates the outer wall of the inner cylinder and is elastically connected to the inner wall of the outer cylinder through a spring.

[0014] In order to facilitate the positioning and disassembly of the spring, a positioning pin capable of positioning the spring is provided on the outer cylinder.

[0015] The beneficial effect of the present invention is that the one-time needle loading mechanism for micro needle roller bearings can automatically load needles for micro needle roller bearings with smaller volumes through the cooperation of specially designed positioning mechanisms, needle dropping mechanisms and press-fitting mechanisms, thereby greatly improving the loading efficiency, reducing the labor intensity of operators and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the disposable needle loading mechanism of the micro needle roller bearing of the present invention;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the positioning mechanism of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the positioning seat, the guide column and the lifting support when they cooperate with each other in the present invention;

[0019] Figure 4 It is a schematic diagram of the structure when the needle roller of the present invention falls between the guide column and the lifting support;

[0020] Figure 5 It is a schematic structural diagram of the present invention when the needle roller rises and cooperates with the cage;

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the needle drop mechanism of the present invention;

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the press-fitting mechanism of the present invention;

[0023] Figure 8 It is a schematic diagram of the internal structure of the pressing seat of the present invention;

[0024] Fig. 9 It is a schematic diagram of the structure of the inner cylinder and the push plate of the present invention when they are matched;

[0025] Fig.10 It is a schematic structural diagram of the push plate, the retaining frame and the needle roller of the present invention. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0027] like Figure 1 The disposable needle loading mechanism shown includes a positioning mechanism 1, a needle dropping mechanism 2 and a pressing mechanism 3. The positioning mechanism 1 is used to position the retaining frame and the needle roller. The needle dropping mechanism 2 is correspondingly arranged on one side of the positioning mechanism 1, and is used to send the needle roller into the positioning mechanism 1. The needle dropping mechanism 2 can achieve horizontal movement or up and down lifting (its power system is not shown, and a conventional guide rail type moving mechanism can be used). The pressing mechanism 3 is correspondingly arranged above the positioning mechanism 1, and is used to press the needle roller on the positioning mechanism 1 into the retaining frame from the inside. The positioning mechanism 1 can achieve up and down lifting (its power system is not shown, and a conventional lifting drive can be used).

[0028] Specifically, combined Figure 2-5 The positioning mechanism shown includes a positioning seat 104, a guide column 103, a lifting support 108, a first lifting drive and a rotation drive. The positioning seat 104 is rotatably connected to the top of the bracket 101 through a bearing. The positioning seat 104 is provided with an annular positioning groove 1041 capable of positioning the retaining frame 4. The positioning seat 104 has a through hole in the center, and a lifting support 108 capable of supporting the needle roller 5 is sleeved in the through hole. The first lifting drive is connected to the lifting support 108. The first lifting drive drives the lifting support 108 to move up and down along the positioning seat 104 through a cylinder 109. The lifting support 108 has a guide hole in the center, and a guide column 103 is provided in the guide hole. The outer wall of the guide column 103 is provided with a There are several arc guide grooves that can position the needle roller 5, and there is a gap between each arc guide groove and the positioning seat 104 for the needle roller 5 to be inserted one by one. The rotary drive is connected to the guide column 103, and the rotary drive can drive the guide column 103 to rotate axially through the motor 102 and the pulley group; in addition, the positioning mechanism is also provided with a blocking component that can prevent the rotation of the retaining frame 4, and the blocking component includes a pushing cylinder 106 and a pushing block 107. The pushing cylinder 106 is connected to the pushing block 107, and the pushing cylinder 106 can drive the pushing block 107 to move back and forth so that the pushing block 107 is inserted into the needle roller groove of the retaining frame 4; a sensor 105 that can sense whether the retaining frame 5 is rotated into place is also provided on one side of the positioning mechanism.

[0029] Specifically, combined Figure 6The needle drop mechanism shown includes a vibrating screen, a needle drop guide block 203, a second lifting drive, a clamping block 204 and a clamping drive. The needle drop guide block 203 is provided with a needle drop channel 2031 for the needle roller to fall. The needle drop channel 2031 is perpendicular to the horizontal plane. The outlet end of the vibrating screen is connected to the needle drop channel 2031 through a hose. The second lifting drive is connected to the needle drop guide block 203. The second lifting drive drives the needle drop guide block 203 to move up and down through the cylinder 201. The guide block 203 has a notch at the bottom end. The clamping block 204 is correspondingly arranged on one side of the notch of the needle drop guide block 203. The clamping drive is connected to the clamping block 204. The clamping drive drives the clamping block 204 to clamp the needle roller in the needle drop channel 2031 through the cylinder 202 to control the discharge of the needle roller. The needle roller in the needle drop channel 2031 can fall onto the lifting support of the positioning mechanism.

[0030] Specifically, combined Figure 7-10The pressing mechanism shown in the figure includes a third lifting drive, a clamping seat, a plurality of push plates 311, a lever 301 and a fourth lifting drive. The third lifting drive is connected to the clamping seat. The third lifting drive drives the clamping seat to lift up and down as a whole through an electric cylinder (not shown in the figure, a conventional electric cylinder can be used). The clamping seat includes a support, an outer cylinder 302 and an inner cylinder 308. The outer cylinder 302 is rotatably connected to the bottom end of the support through a bearing. The inner cylinder 308 is fixed in the outer cylinder 302. The bottom end of the inner cylinder 302 has a plurality of pressing blocks 3081 that can press the top end of the retainer 4. Each pressing block 3081 is annular and can The push plate 311 is slidably connected to the guide groove. The inner end of the push plate 311 penetrates the inner wall of the inner cylinder 308 and has an arc block 3111 perpendicular to the horizontal plane and capable of pushing the needle roller 5 into the needle roller groove of the retainer 4. A socket for the lever 301 to be plugged is formed between the inner sides of the multiple arc blocks 3111. The outer end of the push plate 311 penetrates the outer wall of the inner cylinder 308 and is elastically connected to the positioning pin 310 on the inner wall of the outer cylinder 302 through the spring 309. The arc block 3111 has a spring 309 on the outer side of one side relative to the needle roller 5. The arc groove that matches the needle roller 5, the lever 301 is correspondingly arranged above the jack, the bottom end of the lever 301 is a cone-shaped structure, the fourth lifting drive is connected to the lever 301, and the fourth lifting drive drives the lever 301 to move up and down through the cylinder, so that the lever 301 pushes each arc block 3111 to move outward, thereby pressing each needle roller 5 into the retaining frame 4 from the inside; in addition, the pressing mechanism also includes a swinging component that can align the retaining frame 4 with each needle roller 5, and the swinging component includes a swinging cylinder 304, a swinging block 306, a guide rail 305, a guide wheel 307 and a rotating seat 303, and the rotating seat 303 is The bearing is rotatably connected to the support and fixed to the outer cylinder 302. One end of the rotating seat 303 has a U-shaped groove. The swing block 306 is slidably connected to the guide rail 305 and is connected to the swing cylinder 304. The guide wheel 307 is rotatably connected to the swing block 306, and the guide wheel 307 is arranged in the U-shaped groove of the rotating seat 303. The swing cylinder 304 can drive the swing block 306 to slide along the guide rail 305, so that the guide wheel 307 rolls along the U-shaped groove, thereby driving the outer cylinder 302 and the inner cylinder 308 to rotate, and the inner cylinder 308 drives the retaining frame 4 to rotate so that the needle roller groove of the retaining frame 4 corresponds to the needle roller 5 one by one.

[0031] During processing, the needle drop mechanism 2 is moved by the power system to the top of the positioning mechanism 1, and the needle rollers 5 in the vibrating screen fall into the needle drop channel 2031 one by one. At this time, the cylinder 202 drives the clamping block 204 to retreat, and the needle rollers 5 in the needle drop channel 2031 fall into the arc-shaped guide groove of the guide column 103, and are supported by the lifting support 108. The motor 102 drives the guide column 103 to gradually rotate, and the needle rollers 5 in the needle drop channel 2031 fall into the arc-shaped guide groove of the guide column 103 one by one. After a full circle of material is dropped, the cylinder 202 drives the clamping block 204 to block the needle drop channel 2031, and the needle roller 5 can no longer drop material; then, the operator installs the retaining frame 4 into the positioning groove of the positioning seat 104, and the power system drives the pressing mechanism to descend, so that the inner cylinder 308 presses the retaining frame 4, and the cylinder 109 drives the lifting support 108 to rise along the positioning seat 104, and the needle roller 5 rises under the guidance of the arc block 3111, and the retaining frame 4 is sleeved on each needle roller 5; at this time, since the needle roller groove of the retainer 4 is not aligned with the needle roller 5 one by one, the swing cylinder 304 drives the swing block 306 to slide along the guide rail 305, so that the guide wheel 307 rolls along the U-shaped notch, thereby driving the outer cylinder 302 and the inner cylinder 308 to rotate, and the inner cylinder 308 drives the retainer 4 to rotate so that the needle roller groove of the retainer 4 corresponds to the needle roller 5 one by one. At the same time, the push cylinder 106 drives the push block 107 to be inserted into the needle roller groove of the retainer 4, and the retainer 4 can no longer rotate, completing the positioning of the retainer 4 and the needle roller 5. After the sensor 105 senses that the positioning is correct, the cylinder drives the lever 301 to gradually decrease, and the lever 301 can push each push plate 311 to move outward at the same time, so that the needle roller 5 on the outer side of the arc block 3111 of the push plate 311 is pushed into the needle roller groove of the retainer 4 to complete the needle installation, and the lever 301 rises. Due to the action of the spring 309, each push plate 311 is reset to continue to install the next product.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "between", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0033] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A disposable needle loading mechanism for a micro needle roller bearing, characterized in that: It includes a positioning mechanism, a needle dropping mechanism and a pressing mechanism; The positioning mechanism is used to position the retainer and the needle roller, and includes a positioning seat, a guide column, a lifting support, a first lifting drive and a rotation drive. The positioning seat is provided with a positioning groove capable of positioning the retainer, and the center of the positioning seat has a through hole, and a lifting support capable of supporting the needle roller is arranged in the through hole. The first lifting drive is connected to the lifting support, and the first lifting drive can drive the lifting support to move up and down along the through hole of the positioning seat. The center of the lifting support has a guide hole, and a guide column is arranged in the guide hole. The outer wall of the guide column is provided with a plurality of arc-shaped guide grooves capable of positioning the needle roller, and the rotation drive is connected to the guide column, and the rotation drive can drive the guide column to rotate axially; The needle drop mechanism is correspondingly arranged at one side of the positioning mechanism, and is used to send the needle roller into the positioning mechanism, including a vibrating screen, a needle drop guide block, a second lifting drive, a clamping block and a clamping drive. A needle drop channel for the needle roller to fall is provided in the needle drop guide block, the vibrating screen is connected to the needle drop channel, the second lifting drive is connected to the needle drop guide block, the second lifting drive can drive the needle drop guide block to move up and down, the clamping block is correspondingly arranged at one side of the needle drop guide block, the clamping drive is connected to the clamping block, and the clamping drive can drive the clamping block to clamp the needle roller in the needle drop channel; The pressing mechanism is correspondingly arranged above the positioning mechanism, and is used for pressing the needle rollers on the lifting support into the retaining frame from the inside, and includes a third lifting drive, a clamping seat, a plurality of push plates, a lever and a fourth lifting drive. The third lifting drive is connected to the clamping seat, and the third lifting drive can drive the clamping seat to move up and down, thereby clamping the retaining frame. The push plates are movably connected in the clamping seat and are correspondingly arranged one by one on the inner sides of the needle rollers on the lifting support. The outer sides of the push plates have arc-shaped grooves that match the needle rollers, and the inner sides of the push plates form sockets for the lever rods to be plugged in. The lever rods are correspondingly arranged above the sockets, and the bottom end of the lever rods is a conical structure. The fourth lifting drive is connected to the lever rod, and the fourth lifting drive can drive the lever rod to move up and down, so that the lever rods push the push plates to move outward, thereby pressing the needle rollers from the inside into the retaining frame.

2. The disposable needle loading mechanism for micro needle roller bearings according to claim 1, characterized in that: The pressing seat comprises a support, an outer cylinder and an inner cylinder. The outer cylinder is rotatably connected to the bottom end of the support, and the inner cylinder is fixed in the outer cylinder. The bottom end of the inner cylinder has a plurality of pressing blocks that can press the top end of the retainer.

3. The disposable needle loading mechanism for micro needle roller bearings according to claim 2, characterized in that: The pressing mechanism also includes a swinging assembly that can align the retaining frame with each roller needle, and the swinging assembly includes a swinging cylinder, a swinging block, a guide rail, a guide wheel and a rotating seat. The rotating seat is rotatably connected to the support and fixed to the outer cylinder. One end of the rotating seat has a U-shaped groove. The swinging block is slidably connected to the guide rail and connected to the swinging cylinder. The guide wheel is rotatably connected to the swinging block, and the guide wheel is arranged in the U-shaped groove of the rotating seat. The swinging cylinder can drive the swinging block to slide along the guide rail, so that the guide wheel rolls along the U-shaped groove, thereby driving the outer cylinder and the inner cylinder to rotate, and the inner cylinder drives the retaining frame to rotate so that the roller needle groove of the retaining frame corresponds to the roller needle one by one.

4. The disposable needle loading mechanism for micro needle roller bearings according to claim 3 is characterized in that: The positioning mechanism also includes a blocking component capable of preventing the holder from rotating. The blocking component includes a push cylinder and a push block. The push cylinder is connected to the push block. The push cylinder can drive the push block to move forward and backward so that the push block is inserted into the needle groove of the holder.

5. The disposable needle loading mechanism for micro needle roller bearings according to claim 3, characterized in that: The positioning mechanism also includes a sensor capable of sensing whether the retaining frame is rotated into place.

6. The disposable needle loading mechanism for micro needle roller bearings according to claim 3, characterized in that: The inner cylinder is provided with a plurality of guide grooves penetrating the inner wall and the outer wall thereof, the push plate being slidably connected in the guide grooves, the inner end of the push plate penetrating the inner wall of the inner cylinder, having an arc-shaped block which is perpendicular to the horizontal plane and can push the needle roller into the needle roller groove of the retaining frame, a socket for the lever to be plugged in is formed between the inner sides of the plurality of arc-shaped blocks, the outer end of the push plate penetrating the outer wall of the inner cylinder and being elastically connected to the inner wall of the outer cylinder through a spring.

7. The disposable needle loading mechanism for micro needle roller bearings according to claim 6, characterized in that: The outer cylinder is provided with a positioning pin capable of positioning the spring.

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