JPS6076921A - Needle feeding apparatus for needle bearing - Google Patents

Abstract

PURPOSE:To prevent the deterioration of quality due to damage, by installing a driving means for pressing and separating one roller from a needle according to the necessity or unnecessariness of transportation of needles, in assembly of a needle bearing. CONSTITUTION:An apparatus for feeding a needle for needle bearing by catching it by a pair of rollers 5 and 6 is equipped with a driving means for pressing and separating at least one roller 5 from the needle 10 according to the necessity or unnecessariness of transportation of needles. Therefore, during the time in which the feeding to the next workpiece is started after the supply of needles 10 for a workpiece is suspended and said workpiece is carried-out, the needles 10 filling a feeding passage is not applied with a transporting force, and the needle 10 positioned between the rollers 5 and 6 are not damaged. Thus, the deterioration of quality and durability of bearings is prevented.

Description

[Detailed Description of the Invention] This invention provides an apparatus for assembling a needle bearing.
The present invention relates to a needle supply device that supplies needles.

Conventionally, in the assembly of needle bearings, devices for automatically supplying needles to predetermined locations include one kerater that constantly rotates and the other rotatably installed in the needle supply path. There has been a needle feeding device in which the outer peripheral portions of the rollers are provided close to each other, the needles are sandwiched between these rollers, and the needles are conveyed by rotation.

However, in the case of conveyance using a pair of rollers as described above, there is no problem while the needles are being sequentially supplied to predetermined parts, but when the supply to one workpiece (for example, the outer ring of a bearing) is completed. After that, until this work is carried out and the next work is carried to a predetermined position, the end of the supply path on the side supplying the work is closed to prevent the needle from falling, so that the needle The paper remains stuck in the supply path while being subjected to the force of conveyance by the rollers. Therefore, for a needle that remains between a pair of colas until the next supply begins,
There is a problem in that the rotation of one roller and the pressing force of the other roller cause damage to the needle. In other words, since precision is important for parts such as bearings, even the slightest damage to the needle will lead to a decline in quality, which can lead to defects in the needle bearing itself or a decrease in durability. There was a problem with connection.

This invention was made in view of the above-mentioned problems, and aims to provide a needle feeding device for needle bearings that does not damage the needles to be fed and does not cause deterioration in quality. .

The configuration of the needle supply device for a needle bearing according to the present invention is characterized by providing a driving means for pressing at least one roller against and separating from the needle depending on whether the needle needs to be conveyed or not.

The present invention will be explained below based on the drawings.

1 to 6 are diagrams illustrating a needle supply device for a needle bearing according to an embodiment of the present invention.

That is, in the figure, 1 is a needle supply device, 2 is a frame that supports each component, 3 and 4 are needle guide plates, 5 is one roller, which is a rotatable free roller, and 6 is the other roller. The feed roller 7 is a cylinder constituting a driving means.

The needle guide plate 3.4 is fixed to the frame 2, and is supported in a single plane by left and right brackets 8.2. Needle 1 between the vertical end faces
0 supply path 11 is formed.

Note that one needle guide plate 3 is supported by two adjusting bolts 12.12 provided on the bracket 8, and the adjusting bolts 12.12 are adjusted as appropriate to tighten the bolts 12a. This allows the needle guide plate 3 to be moved and the width of the supply path 11 to be adjustable.

Further, needle guide blocks 1 are provided above and below the supply path 11 formed by the needle guide plates 3 and 4, respectively.
3.14 is provided, and this needle guide block 13.14 has a guide hole 13a that communicates with the supply channel 11 in a straight line.

14a is formed.

A vibrator 15 for guiding the needle 10 into the needle supply device 1 is connected to the upper needle guide block 13.

At the top of one of the brackets 8 that supports the movable needle guide plate 3 mentioned above, a support member 16 is provided horizontally projecting as shown in the second figure. An arm 18 is attached, which is swingable in the direction toward and away from the bracket 8 (horizontal direction in FIG. 1) using the arm 17 as a fulcrum. One small-diameter shaft 19a of the free roller shaft 12 whose axis is parallel to the pin 17 is inserted into the lower side of the arm 18 and fixed with a nut 20. Further, the free roller 5 is rotatably attached to the side number of the small diameter shaft 19b on the opposite side of the free roller shaft 12 via a bearing 21, and a washer 22 for preventing detachment is fixed by a port 22a.

At this time, the plane of the free roller 5 is approximately perpendicular to the surface of the needle guide plate 3.4, and
It is arranged so that the outer circumferential surface is along the front side (right side in FIG. 1) of the supply path 11.

Further, a spring 24 is tensioned between the other end of the free roller shaft 12 and a hook 23 provided on one bracket 8, and the arm 18 is biased toward the needle guide plate 3. , the outer peripheral surface of the free roller 5 is brought into pressure contact with the needle 10 in the supply path 11. Reference numeral 25 in FIG. 2 is a long bolt that is screwed through the arm 18 and whose end abuts against the needle guide plate 3. By operating this long port 25 and nut 25a, The pressure contact force of the free roller 5 can be adjusted.

Further, one of the aforementioned brackets 8 is provided with a cylinder 7 that constitutes a driving means, and this cylinder 7 has a pressing portion 7a that can press the arm 18 in a direction to separate it from the bracket 8. .

The feed roller 6, which is the other roller, is installed so that its center of rotation is approximately at the same height as the free roller shaft 12, and has one side close to the back side of the needle guide plate 4, and one side of the feed roller 6 that is the other roller. The outer periphery of the side surface is aligned with the back side of the supply path 11 (left side in Figure 1).

In other words, the outer peripheral surface of the free roller 5 and the feed roller 6
The outer circumferential side surface of the rollers 5.
0 is inserted.

The feed roller 6 has a shaft portion 6a on the other end surface, and by fitting the shaft portion 6a into a cylindrical member 26 fixed to the frame 2 with one end thereof passing through the frame 2 via a bearing 27,
Rotatably supported.

Moreover, in the shaft portion 6a on the back side of the frame 2,
A gear 28 is attached to the shaft portion 6a of the feed roller 6, and a motor 30 is supported by the bracket 22.
A gear 32 is attached to a rotating shaft 31 of the gear 28.
The feed roller 6b is configured to mesh with the gear 32, and the feed roller 6b is rotated by the motor 30 in the direction of force-feeding the needle 1o downward (in the direction of arrow A in FIGS. 1 to 3).

FIG. 4 is a diagram showing a device for assembling the needle 10 supplied by the needle supply device 1 to a workpiece.

This device is arranged below the needle feeding device 1. First, inside the device upper frame 40, there is a push rod 42 that is urged downward by a spring 41, and a supply path 11 of the needle feeding device 1. A supply passage 43 communicating with the supply passage 43 and a knock plate 44 for pushing the needle 10 toward the outer peripheral surface of the push rod 42 are provided at the lower end of the supply passage 43.

Further, the push rod 42 is provided with a guide key 45 to restrict the range in which it can move up and down.

The knock plate 44 is rotatably mounted around a hinge 46 and is supported by a spring 47 stretched between the knock plate 44 and the upper frame 40 of the apparatus.

The lower end is biased in the direction of pushing the needle 10 toward the push rod 42 (in the direction of arrow B in the figure), and the upper end is provided with a knock cam 48 that surrounds the upper outer periphery of the device upper frame 40. It engages with the internal tooth 48a. In addition, the internal teeth 48
The number a is determined depending on the number of needles 10 to be assembled.

On the other hand, the lower frame 50 of the device is provided with a cylindrical flanged guide 53 on the lower side of the track 52 on which the workpiece 51, which is the outer ring of the bearing, is placed, and the push rod 42 is pushed up into this flanged guide 53. The guide shaft 54 is slidably inserted into the guide shaft 54, and
A slide bush 55 for vertical movement is provided.

Further, in the truck 52, a guide bush 56 is provided at a position where it can be assembled to the workpiece 51, and the above-mentioned slide bush 55 is pushed downward by a spring 57 provided in the flanged guide 53. It is biased and is slidably fitted into the guide bush 56.

When the workpiece 51) is not being assembled, the upper surface of the track 52 and the guide bush 5
The upper surface of the guide shaft 54 and the upper end surfaces of the slide bush 55 form the same plane.

Note that the diameter of the push rod 42 and the slide bush 55 are
The diameter of the slide bushing 55 is approximately the same as the diameter of the needle 10, and the thickness of the slide bushing 55 is formed to match the diameter of the needle 10.

In the needle supply device 1 configured as above,
The assembly described above will explain the operation and operation of the apparatus for performing the work.

First, the workpiece 51 that has been conveyed on the upper surface of the truck 52
However, when the assembly stops at the center of the guide bush 56, the guide shaft 54 and the slide bush 55 start loading so that they pass through the center hole of the workpiece 51, and the guide shaft 54 10
The knock cam 48 and the guide shaft 54 are rotated in synchronization with gears, shafts, etc. not shown. , 4th
As shown by the imaginary line in the figure, by pushing up the push rod 42, the guide shaft 54 and the slide bush 55 are
The knock plate 44, which is rotated back and forth by the knock cam, sequentially pushes the needles 10 fed through the supply path 43 into the space formed between the upper frame 50 and the upper frame 50 of the apparatus.

On the other hand, in the needle supply device 1, the knock cam 48
While the guide shaft 54 is rotating, that is, while the needles 10 are being pushed in one by one, the free roller 5 and the feed roller 6, which is rotated by the motor 30, are moving down the supply path 1''1. came needle 10
It continues to be transported one after another.

Next, when a predetermined number of needles 10 have been loaded around the guide shaft 54, the knock cam 48 and the guide shaft 54 stop rotating, and then the guide shaft 54 stops rotating.
As the slide bush 55 descends, the push rod 42 is also pushed back by the repulsive force of the spring 41. Further, when the upper end surfaces of the guide shaft 54 and the slide bush 55 are lowered until they are flush with the upper surface of the guide bush 56, the needle 10 is assembled along the inner circumferential surface of the center hole of the workpiece 51. .

Note that the needles 10 naturally have a cylindrical shape and are aligned along the inner peripheral surface of the circular workpiece 51, so the needles 10 do not fall backward inward during assembly and slide on the track 52 when being carried out. If you move it around, there will be no problem.

'' = When the assembly of a predetermined number of needles 10 is being completed, in the needle feeding device 1 which no longer needs to force feed the needles 10, the rotation of the knock cam 48 and the guide shaft 54 is stopped and , cylinder 7
starts operating, and as shown in FIG. 5, the pressing portion 7a further protrudes and presses the arm 18.

Therefore, the outer circumferential surface of the free roller 5 separates from the needle 10 of the supply path 11 in the direction of arrow C in FIGS. Supply channel 4 communicating with the lower part of
3 (see Figure 4).

Note that while the free roller 5 is separated from the needle 10, the feeder roller 6 continues to rotate, but since the pressure contact force from the free roller 5 is not applied, the needle 1
There is almost no effect on 0.

Then, the work 51 to be assembled in the first place is transported to a predetermined position, and at the same time the knock plate 44 starts pushing the needle 10 again, the cylinder 7 retreats the suppressing part 7a. Then, the arm 18 is pulled back by the contracting force of the spring 24, and the free roller 5 is moved again to the needle 1.
0, the needle 10 is forced to be fed by the pressure contact of the free roller 5 and the rotation of the feeder roller 6.

In the above embodiment, the needle is force-fed using the side surface of one roller and the outer circumferential surface of the other roller, but the needle may be conveyed using the outer circumferential surface of both rollers. In addition, one roller, the free roller 5, is connected to the needle 1.
The configuration was such that the needle was in pressure contact with the needle 1 and the needle 1 was
0 transportation required.

The structure may be such that the feed roller 6 is brought into contact with the feed roller 6 when the feed roller 6 is not needed, or the structure where both the rollers 5 and 6 are brought into contact with each other and separated at the same time.

In addition, a cylinder 7, which is a drive device that presses the free roller 5 and presses the free roller 5 for 8 hours, corresponds to whether or not the needle 10 needs to be conveyed.
The knock cam 48 or the guide shaft 5 can be synchronized with the operation of the knock plate 44.
4 electrically detects the rotation or stop state of the cylinder 7, and the knock cam 48 and the guide shaft 5.
4, and the guide shaft 54 and push rod 4.
The structure may be such that the cylinder 7 is actuated by mechanically extracting the vertical movement of the arm 2, or a drive mechanism may be used in which this mechanical movement is directly transmitted to the arm by a link mechanism or the like.

As explained above, according to the needle supply device for needle bearings of the present invention, in the device for supplying needle bearing needles by sandwiching them between the -Jt(7) rollers, in response to whether or not the needles need to be conveyed, Since the configuration is equipped with a driving means that presses and spaces at least one roller against the needle, the supply of the needle to the workpiece is temporarily interrupted, and after that workpiece is carried out, supplying to the next workpiece is started. During this process, no force is applied to the needles that are stuck in the supply path, which prevents damage to the needles located between the pair of rollers, and also reduces the quality and durability of the needle bearings. It has the effect of preventing deterioration.

[Brief explanation of drawings]

FIG. 1 is a plan sectional view illustrating a needle feeding device according to an embodiment of the present invention, FIG. 2 is a perspective view showing a pair of rollers in the needle feeding device, and FIG. 3 is a needle with the free roller removed. FIG. 4 is a sectional view illustrating the device for assembling needles, and FIGS. 5 and 6 show the free rollers separated by the drive mechanism when the needles do not need to be conveyed. FIG. 2 is a plan sectional view and a side explanatory view. DESCRIPTION OF SYMBOLS 1... Needle supply device 5... Free roller (- side roller) 6... Feed roller (other roller) 7... Cylinder (driving means) 7a... Suppression part 10... Needle Patent applicant Nissan Motor Co., Ltd. Patent applicant Yoshitsuka Seiki Co., Ltd. Patent attorney Yutaka Oshio 281 No. 3Ii fg4 Fig. 851m

Claims (1)

[Claims] (1) - In a needle supply device for needle bearings that transports needle bearing needles by sandwiching them between Jt rollers, at least one roller is pressed against the needles and placed between them depending on whether the needles need to be transported or not. A needle supply device for a needle bearing, characterized by being provided with a driving means.