JP2721300B2 - Ball feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a ball bearing, a pearl, a resin ball and the like, which are used for selecting non-defective products from a large number of balls, or for producing a ball bearing and a pearl necklace. And a sphere supply device for feeding and supplying spheres one by one.

[0002]

2. Description of the Related Art As is well known, a sphere used for a ball bearing has a substantially constant diameter, and an allowable diameter error is as severe as about ± 1 (μ). For this reason, when a large number of balls are manufactured, those that fall within the tolerance after that are selected.

FIG. 11 shows a schematic configuration of a ball sorting device. Here, two cylindrical bodies 101 and 102 are arranged side by side, and the gap between each of the cylindrical bodies 101 and 102 is gradually widened from one end to the other end of each cylindrical body.
The sphere 103 is rolled from the narrower gap between 1,102. At this time, the spheres 103 are each cylindrical body 1 slightly larger than the diameter of the spheres.
When it rolls up to the gap between 01 and 102, it falls through the gap between the cylindrical bodies 101 and 102 at that position. Therefore,
The diameter of each ball can be known according to the position where each ball falls, and these balls can be sorted out.

On the other hand, in order to sort the spheres, it is necessary to guide a large number of spheres one by one to the gap between the cylinders. Therefore, a supply device for guiding the spheres is provided in the sorting device.

Heretofore, as a supply device of this type, there has been a device which applies fine vibrations to a large number of balls and guides each ball one by one. That is, by giving fine vibrations to many spheres, each sphere is moved and moved little by little, these spheres are arranged in a line, and these spheres are sent out one by one.

[0006]

However, in the above-mentioned conventional ball supply device, a large number of balls are vibrated.
Fine balls are easily scattered, and furthermore, the impact when each ball collides is strong, so that there is a problem that each ball is damaged, each ball is chipped or deformed. Further, when giving the vibration to each sphere, intake each sphere is magnetized and electrostatic
The phenomenon of dressing occurred, which made it difficult to supply balls one by one and made individual sorting inaccurate.

An object of the present invention is to supply a large number of balls one by one without giving a strong impact to the balls and without causing a phenomenon that the balls are magnetically and electrostatically charged.

[0008]

In order to solve the above-mentioned problems, according to the present invention, a hole is formed in the bottom and the hole is directed toward the hole.
Thus, a housing having a bottom inclined downward, and a rotating rod having a downwardly directed tip penetrating through a hole in the bottom of the housing, the rotating rod includes the inside of the housing and the tip of the rotating rod. path communicating is formed of, said pre Symbol rotating rod rotated continuously
The balls housed in the housing are led out of the housing one by one through the path of the rotating rod, and the rotating rod is slidably inserted.
And the upper collar fixed to the outer circumference of the rotating rod.
With the lower collar held by the bearing and the upper collar
From below, and fix the upper collar to the rotating rod.
The position can be changed in the longitudinal direction of the rotating rod.

[0009] This supply device is perpendicular to the upper collar.
Mount through the screw, the downward projecting end of this vertical screw
Into the hole on the end face of the lower collar,
And a tip that detachably attaches to the end of the spindle
And the above-mentioned path is formed at the tip portion.
New

[0010]

[0011]

According to the present invention, when the rotating rod is rotated, a sphere near the rotating rod forms an entrance of a path formed on the rotating rod.
Spheres, and the balls that flow in order are led out of the housing one by one through the path of the rotating rod.

Further, the path and the case is formed in the rotation rod and when a communication hole formed in the rotation rod groove Remarks
The height of the entrance is the size of the sphere in both paths.
If the ball is not correctly adjusted to
The entrance does not flow well or several are trying to flow in at the same time
The problem of jamming occurs. The device of the present invention
By changing the fixed position of the upper collar with respect to the
The position of the tip of the rotating rod (that is, the height of the path entrance)
Can be adjusted. The one with the above vertical screw is the tip of the rotating rod
The position can be fine-tuned, and the tip of the rotating rod can be
Is the path whose tip matches the diameter of the sphere
Can be replaced with a ball with
In this way, the balls can be sent out accurately and smoothly one by one.
Wear.

[0013]

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment according to the present invention, in which a ball supply device 1 and a ball sorting device 2 are provided. The supply device 1 is supported by a column 3 and is disposed above the sorting device 2. A large number of balls are stored in the housing 5 of the supply device 1, and the balls are sent out one by one from a hole provided at the bottom of the housing 5. This ball is received at the introduction section 6 of the sorting device 2,
The liquid is guided to a gap between the cylindrical body 7 and another cylindrical body 8 (not shown) through an introduction hole passing through the introduction section 6. These cylinders 7 and 8 are inclined so as to be higher on the left side, and the sphere guided to the gap rolls to the lower right side, and falls on the way to the tray 9 through this gap. I do.

In the supply device 1, an upper beam 11 is attached to the tip of the column 3, and a motor 13 is fixed to a motor fixing bracket 12 of the upper beam 11. A pulley 14 is fixed to a shaft of the motor 13. A pair of bearings 15 are fixed to the tip of the upper beam 11, and a rotating rod 16 is supported by these bearings 15. A pulley 17 is fixed to the rotating rod 16. Here, the pulley 14 on the motor 13 side and the rotating rod 16
Since the belt 18 is stretched over the pulley 17 on the side, when the shaft of the motor 13 rotates, the rotating rod 16 rotates accordingly.

FIG. 2 shows the supply device 1 when it is cut along the arrow A shown in FIG. 1 and its peripheral parts. In the figure, a sleeve mounting member 21 is fixed to the lower end of the upper beam 11, and a sleeve 22 is protruded from the lower surface of the sleeve mounting member 21. The rotating rod 16 penetrates through the hole of the sleeve mounting member 21 and the sleeve 22 and is supported by the sleeve 22 so as not to swing. The rotating rod 16
Reaches the bottom of the housing 5, and its tip enters the hole 25 at the bottom of the housing 5.

The pulley 17 is fixed to the lower collar 19. The rotating rod 16 is passed through the lower collar 19, and the lower collar 19 is supported by each bearing 15.
Tighten the screw 19a on the peripheral wall of the lower collar 19,
The lower collar 19 is fixed to the rotating rod 16. The rotating rod 16 is also passed through the upper collar 20,
The upper collar 20 is fixed to the rotating rod 16 by tightening the horizontal screw 20 a of the upper collar 20. A vertical screw 20 b is also screwed into the upper collar 20, and the tip of the vertical screw 20 b projects downward and fits into a small hole in the end face of the lower collar 19.

Here, when the screw 19a of the lower collar 19 is loosened and the horizontal screw 20a of the upper collar 20 is loosened, the rotating rod 16 can be moved up and down. In this state, the position of the tip of the rotary rod 16 is adjusted, and thereafter the lower collar 1 is adjusted.
9 and the horizontal screw 20a of the upper collar 20 are tightened to determine the position of the rotating rod 16 in the vertical direction.

Subsequently, when finely adjusting the position of the tip of the rotating rod 16, only the screw 19a of the lower collar 19 is loosened, and the vertical screw 20b of the upper collar 20 is rotated to move the lower portion of the vertical screw 20b downward. Change the length of the protrusion. Thereby, the rotating bar 16 can be positioned by slightly moving the rotating bar 16 up and down. Thereafter, the screw 19a of the lower collar 19 is tightened to fix the rotating rod 16.

The housing 5 has a cylindrical shape, and is fixed by being sandwiched between a pair of lower beams 24 attached in the middle of the column 3.
It is supported by this.

The rotary rod 16 comprises a main shaft portion 31 and a tip portion 32 as shown in FIG. A male screw 31a is formed at the end of the main shaft portion 31, a female screw 32a is formed at the distal end portion 32, and the male screw 31a is screwed into the female screw 32a to connect the main shaft portion 31 and the distal end portion 32.

The distal end portion 32 is formed with an L-shaped communication hole 33 bent in the middle. The inner diameter of the communication hole 33 is set slightly larger than the diameter of the sphere. This communication hole 3
3 is located inside the housing 5 and the outlet 33b
Is located at the lower end of the tip portion 32.

In the supply device 1 having such a configuration, a large number of balls are accommodated in the housing 5 and the rotating rod 16 is connected to the motor 1.
3 rotates at an appropriate rotation speed. At this time, FIG.
As shown in FIG. 5, each ball 26 in the housing 5 is moved with the rotation of the rotating rod 16, sequentially enters the entrance 33 a of the communication hole 33 of the distal end portion 32, passes through the communication hole 33, and It is discharged one by one from the outlet 33b of the hole 33 and falls through the vinyl hose 28 connected to the hole 25 of the housing 5. The vinyl hose 28 is transparent and is provided for checking the supply state of the ball. And
These spheres are guided from the vinyl hose 28 to the introduction section 6 of the sorting device 2 shown in FIG. 2 and reach the gap between the pair of cylindrical bodies 7 and 8 via the introduction holes 27 of the introduction section 6.

The introduction hole 27 of the introduction section 6 discharges a sphere toward a higher gap (left side in FIG. 1) between the cylindrical bodies 7 and 8. This is because each of the cylinders 7 and 8 is rotated as will be described later, but in order to quickly stabilize the rolling at the beginning of the rolling of the sphere in the gap between the cylinders. The sphere rolling in the gap between the cylindrical bodies falls into the receiving tray 9 through the gap on the way.

Thus, each sphere in the housing 5 is replaced with each of the cylindrical bodies 7, 8
When the ball is sent into the gap, the balls collide strongly with each other, do not receive a strong impact, and are not scratched, chipped, or deformed. Also, each ball in the housing 5 does not take on magnetism and static electricity.

Although not shown here, mechanisms for moving the upper beam 11 and the pair of lower beams 24 up and down along the column 3 are provided, and by moving the lower beams 24 up and down, The housing 5 is appropriately arranged with respect to the sorting device 2. At this time, as described above, the rotating bar 16 is moved up and down, and the position of the tip of the rotating bar 16 is appropriately set.

Also, in order to cope with various diameters of the sphere, a plurality of types of tip portions having different inner diameters of the communication holes are prepared.
It is preferable that the tip portion can be replaced according to the diameter of the ball. Further, the communication hole may be spirally twisted to adjust the ease with which the ball passes. Alternatively, a communication hole in which a plurality of inlets join and communicate with one outlet may be formed at the distal end portion.

Further, a tip portion 34 as shown in FIG. 5 may be used as the tip portion. The distal end portion 34 is formed with a groove 35 extending from a side wall of the distal end portion 34 to a lower end of the distal end portion 34. This tip portion 34 is connected to the rotating rod 16, and this tip portion 34 is connected to the hole 25 of the housing 5.
Through. At this time, the upper end 35 a of the groove 35 is located inside the housing 5. When the rotating rod 16 is rotated in this state, each ball in the housing 5 moves by fitting into the groove 35 of the distal end portion 32 and is discharged one by one from the lower end of the distal end portion 32.

It is to be noted that such a groove may be spirally twisted or a plurality of grooves.

By the way, as shown in FIG.
Connects the left bearing part 41 and the right bearing part 42 that support the pair of cylindrical bodies 7 and 8 and support the tray 9, the left case 43 and the right case 44, and the left case 43 and the right case 44. A connecting portion 45 and a support 46 supporting the connecting portion 45 are provided.

A worm wheel 47 is supported on the support 46 as shown in FIG.
The connecting portion 45 is fixed to the shaft 7, and the connecting portion 45 rotates with the rotation of the worm wheel 47. A worm gear 48 that meshes with the worm wheel 47 is supported by a shaft.
Is directly connected. When this handle 50 is rotated,
The worm gear 48 rotates, and the worm wheel 47 and the connecting portion 45 rotate. Thereby, a pair of cylindrical bodies 7,
8 is set to be slightly inclined from horizontal. This is to make the sphere roll in the gap between the pair of cylindrical bodies 7 and 8.

Left bearing 41 and right bearing 42
Supports the pair of cylindrical bodies 7 and 8 in a manner as shown in FIG. That is, the shaft 8a of the cylindrical body 8 is supported by the fixed bearings 51 and 52 fixedly disposed in the left bearing 41 and the right bearing 42, and the shaft 7a of the cylindrical body 7 is Each moving bearing 5 supported movably along arrow B in the right bearing portion 42
3,54. Since the cylindrical body 8 is supported by the fixed bearings 51 and 52, and the cylindrical body 7 is supported by the movable bearings 53 and 54 that can move along the arrow B, the movable bearings 53 and 54 are indicated by arrows. B
Is moved along each of the cylinders 7, 8
Can be set narrow on the left and wide on the right.

As shown in FIGS. 8 and 9, the mechanism for movably supporting the moving bearing 53 is formed with grooves 55 above and below the frame 53a of the moving bearing 53.
The two rails 56 fitted to the wall 4 of the left bearing portion 41
1a so that the moving bearing 53 can move along the arrow B. Also, screw 57
Is rotatably supported on the wall 41b of the left bearing portion 41, and the screw 57 is screwed into a screw hole 58 of the frame 53a of the moving bearing 53. By rotating the handle 59 connected to the screw 57, the moving bearing 53 can be moved along the arrow B.

Similarly, the mechanism for movably supporting the moving bearing 54 can also be moved by sandwiching the frame 54a of the moving bearing 54 between a pair of rails (not shown) fixed to the inner wall surface of the right bearing portion 42. Be supported by.
Then, a screw 61 rotatably supported on the wall of the right bearing portion 42 is screwed into a screw hole of the frame 54 a of the moving bearing 54, and the handle 6 connected to the screw 61 is screwed.
By rotating 3, the moving bearing 54 can be moved along the arrow B.

A distance measuring sensor main body 71 is disposed on the outer wall surface of the left case 43, and a distance measuring sensor body 71 is connected to the inner wall surface of the left bearing portion 41 via a line (not shown). A distance sensor detector 72 is provided.
The distance measuring sensor detecting section 72 irradiates the laser beam to the wall surface of the moving bearing 53 and makes the laser beam reflected from the wall surface incident. The distance measuring sensor main body 71 includes a distance measuring sensor detecting section 72.
The distance t (shown in FIG. 8) between the distance measuring sensor detecting section 72 and the wall surface of the moving bearing 53 is measured based on the input / output of the distance sensor and the distance t is displayed. This distance t is a distance between the pair of cylindrical bodies 7 and 8.
The gap at the left end of each of the cylindrical bodies 7 and 8 becomes apparent based on this distance t.

Similarly, a distance measuring sensor body 73 is provided on the outer wall surface of the right case 44, and a distance measuring sensor detector 74 is provided on the inner wall surface of the right bearing 42. The distance measurement sensor body 73 measures the distance between the distance measurement sensor detection unit 74 and the wall surface of the moving bearing 54 based on the input / output of the distance measurement sensor detection unit 74, and displays this distance. This distance is
The distance between the right and left ends of the pair of cylinders 7 and 8 increases and decreases, and the distance between the right ends of the cylinders 7 and 8 becomes apparent based on the distance.

Here, by rotating the handles 59, 63, the pair of cylinders 7, 8 are brought into close contact with each other from the left end to the right end, and the gap between the cylinders 7, 8 is reduced to zero. I do. At this time, the respective values displayed on the respective ranging sensor bodies 71 and 73 are initialized to zero. That is, the gap between the cylindrical bodies 7 and 8 and the distance measuring sensor bodies 71 and
The respective values displayed in 73 are matched. Thereafter, by turning the handles 59 and 63 again to open the gap between the cylindrical bodies 7 and 8, the distance measuring sensor body 71 has the gap between the left ends of the cylindrical bodies 7 and 8. The distance is displayed, and the distance measurement sensor body 73 displays the distance of the gap at the right end of each of the cylindrical bodies 7 and 8. Therefore, it is possible to accurately set the gaps at the left end and the right end of each of the cylindrical bodies 7 and 8 according to the display of each of the distance measuring sensor bodies 71 and 73.

On the other hand, on the right side of the pair of cylindrical bodies 7 and 8, respective shaft rods 81 and 82 reaching the right case 44 are connected, respectively.
3, 84 are respectively attached. FIG.
2, two motors 85 and 86 are provided below the right case 44, and these motors 85 and 8 are provided.
Each of the pulleys 87 and 88 is also attached to the shaft 6. Since the belt 89 is stretched between the pulley 83 of the shaft rod 81 of the cylindrical body 7 and the pulley 87 of the motor 85, the cylindrical body 7 rotates with the rotation of the shaft of the motor 85. Similarly, a belt 90 is stretched between the pulley 84 of the shaft rod 82 of the cylindrical body 8 and the pulley 88 of the motor 86, and the cylindrical body 8 rotates with the rotation of the shaft of the motor 86. The rotation directions of the cylinders 7 and 8 are different from each other, and the rotation direction of the cylinder 7 is indicated by an arrow C, and the rotation direction of the cylinder 8 is indicated by an arrow D. By rotating the cylinders 7 and 8 in the respective directions in this manner, the balls are prevented from being caught and clogged in the gap between the cylinders 7 and 8.

In the sorting device 2 having such a configuration,
While looking at the display of the distance measuring sensor body 71, the handle 59 is rotated to make the gap between the left ends of the pair of cylindrical bodies 7 and 8 smaller than the allowable minimum diameter of the sphere.
Is turned, the gap between the right ends of the pair of cylindrical bodies 7 and 8 is made wider than the allowable maximum diameter of the sphere. Then, in this state, each of the cylindrical bodies 7, 8
Are rotated at appropriate speeds, respectively, and the spheres are guided one by one from the supply device 1 to the gaps between the cylinders 7 and 8. The sphere falling into the tray 9 through the gap between the cylindrical bodies and falling within the range from the minimum allowable diameter to the maximum allowable diameter rolls to almost the center of each of the cylindrical bodies 7 and 8 and then falls into the tray 9 through the gap, and exceeds the maximum allowable diameter. The large sphere rolls to the right side of each of the cylindrical bodies 7 and 8 and then falls into the tray 9 through the gap. Here, the receiving tray 9 has respective introduction paths 9b partitioned by a plurality of partition walls 9a, and spheres having substantially the same diameter fall on the respective introduction paths 9b. Therefore, these introduction routes 9
If each container (not shown) is arranged below b, a ball having substantially the same diameter is stored in each container.

In the above embodiment, the apparatus for supplying the ball of the ball bearing is illustrated, but the present invention can be applied to the supply of pearls, resin balls, and the like.

[0042]

As described above, according to the ball supply apparatus according to the present invention, these balls can be discharged one by one from the housing without giving a strong impact to the balls in the housing. Therefore, there is no possibility that each ball is scratched, chipped or deformed. In addition, since each ball does not have magnetism or static electricity, each ball does not attract and continue.
In addition, the vertical position of the rotating rod can be changed.
Adjust the height of the route entrance to prevent poor ball inflow.
Can be eliminated. Install a vertical screw on the upper collar.
And insert the protruding end of the screw into the hole on the end face of the lower collar.
Can easily fine-tune the entrance position, and
If the tip is detachable, the tip is the size of a sphere
Can be exchanged for one that has a route that matches the
Can be more effectively prevented.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment according to the present invention.

FIG. 2 is a sectional view showing the supply device of FIG. 1;

FIG. 3 is a plan view showing a rotating rod in the supply device of FIG. 1;

FIG. 4 is a view used to explain the operation of the supply device of FIG. 1;

FIG. 5 is a perspective view showing a modification of the tip of the rotating rod in the supply device of FIG. 1;

FIG. 6 is a front view showing a support of the sorting device of FIG. 1;

FIG. 7 is a partial sectional view showing the sorting device of FIG. 1;

8 is a plan view schematically showing a moving mechanism of a moving bearing in the sorting device of FIG.

9 is a side view schematically showing a moving mechanism of a moving bearing in the sorting device of FIG.

FIG. 10 is a diagram schematically showing a rotating mechanism of a pair of cylindrical bodies in the sorting device of FIG. 1;

FIG. 11 is a diagram used to explain an outline of a ball sorting device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 ball supply device 2 ball selection device 3 support 5 housing 6 introduction section 7,8 cylindrical body 9 receiving tray 11 upper beam 13 motor 16 rotating rod 22 sleeve 24 lower beam 25 hole 31 main shaft portion 32,34 tip portion 33 Communication hole 35 groove

Claims (3)

(57) [Claims] 1. A hole is formed in a bottom, and the bottom is
Comprising a housing which is in the downstream inclined, and a rotating rod tip towards the bottom penetrates the hole in the bottom of the housing, wherein the rotating rod, leading to the tip of the rotary rod from the inside of the housing path is formed by a pre-Symbol rotating rod continuously rotated
Lower collar aforementioned exit guide the housing in the housing spheres through a path of the rotating rod, one from housing further for inserting the rotating rod slidably
And an upper collar fixed to the outer circumference of the rotating rod
Support the upper collar from below with the lower collar held in,
The fixed position of this upper collar with respect to the rotating rod is the length of the rotating rod.
Ball feeding device that can be changed in the hand direction . 2. The ball feeding device according to claim 1, wherein a vertical screw is inserted through the upper collar and a downward projecting end of the vertical screw is fitted into a hole in an end face of the lower collar. 3. The ball supply apparatus according to claim 1, wherein the rotary rod is constituted by a main shaft portion and a tip portion detachably added to an end of the main shaft portion, and the path is formed at the tip portion. .