JP4006684B2 - Abnormal ball sorting device - Google Patents

Description

【００２７】
【発明の効果】
以上説明したように本発明の異常球分別装置によれば、その特徴的な構造の保持手段により単球と異常球を精度よく分別することができ、加えてその供給手段により連続的に分別することができ、もって異常球の混入の少ない球体を極めて効率的に得ることが可能となる。
【図面の簡単な説明】
【図１】本発明の異常球分別装置の一実施態様を示す概略図である。
【図２】異常球分別装置の備える穿孔部材の平面図である。
【図３】半田ボールを保持する状態を説明する図である。
【図４】異常球を分別する状態を説明する図である。
【図５】異常球分別装置が備える掃出手段と加振手段を説明するための図である。
【図６】本発明の異常球分別装置の別の実施態様を示す概略図である。
【図７】本発明の異常球分別装置の更に別の実施態様を示す概略図である。
【符号の説明】
１：異常球分別装置
１１：保持手段、１１１：穿孔部材、１１２：基体、１１３：受容部
１２：供給手段、１２１：供給部材、１２２：駆動部材
１３：異常球回収容器、１４：単球回収容器
１５：掃出手段、１６：加振手段
９：半田ボール、９０：単球、９１：異常球、９２：小球[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an abnormal sphere sorting device that sorts abnormal spheres from a large number of small spheres mainly composed of monocytes.
[0002]
[Prior art]
Microspheres made of a material such as metal, resin, or glass and requiring high sphericity are manufactured by various methods. For example, a solder ball is manufactured by discharging a molten material into a gas or a solvent and cooling it. In this manufacturing method, in addition to a single sphere (hereinafter referred to as a monocyte) having a predetermined sphericity, an abnormal sphere such as a sphere (hereinafter referred to as a sphere) in which a plurality of monocytes are connected or an elliptic sphere is also formed. Sorting abnormal spheres from many spheres has been performed. Conventionally, a method called slope rolling as described in Patent Document 1 below, for example, has been used to separate continuous spheres from a large number of spheres. This method utilizes the fact that when a sphere rolls down an inclined surface, the behavior of monocytes and continuous spheres is different when dropped, and has the advantage that the apparatus can be simplified. However, with this method, it is possible to detect a continuous ball in which monocytes having the same diameter are connected to each other, but it is not always possible to accurately classify a continuous ball in which balls having different diameters are connected (hereinafter referred to as different diameter continuous balls). There is a problem that you can not.
[0003]
In order to be able to accurately classify monocytes and different spheres, an apparatus described in Patent Document 2 below has been proposed. The apparatus includes a member having an inclined surface on which a large number of small spheres roll, a supply unit that supplies the sphere to the inclined surface, and a recovery unit that collects monocytes that roll off the inclined surface. A groove parallel to the falling direction of the sphere is provided between the surfaces and / or in the middle of the inclined surface. That is, when the different diameter continuous ball enters the groove, the central axis of the different diameter continuous ball coincides with the dropping direction, the small diameter ball acts as a wedge between the groove and the large diameter ball, and the rotation drop stops. It is what you use to do.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-319728 [Patent Document 2]
Japanese Patent Laid-Open No. 11-319722
[Problems to be solved by the invention]
However, in the device with the above-mentioned inclined grooves, the specific configuration such as the inclination angle, shape, and dimensions of the grooves that influence the separation accuracy is determined by preliminary tests according to the individual case of the monocytes to be separated, so it is not always efficient. is not. Moreover, in actual manufacturing, various types of joint balls are generated, from those in which small spheres can be regarded as almost the same size and large diameter spheres to those in which small spheres are extremely small and can be regarded as monocytes. However, the form of rotational drop is different. For this reason, it rotates and drops with the central axis not coincident with the falling direction, or it has almost the same diameter and does not work even if it coincides with the falling direction. Some continuous balls, such as those close to, will fall without stopping on the way, and it is difficult to sort abnormal spheres with high accuracy.
The present invention has been made in view of the above problems, and an object of the present invention is to provide an apparatus capable of accurately and efficiently separating abnormal spheres from a large number of spheres.
[0006]
[Means for Solving the Problems]
The abnormal sphere sorting device according to the present invention is a device for sorting abnormal spheres from spheres mainly composed of monocytes, and a holding means having a receiving portion arranged on the front portion for holding monocytes, and an open one A supply means for supplying a sphere from the opening of the one end face to the surface of the holding means, and a surface of the holding means, and a reservoir for the opening the first end of the supply means is formed on the surface of the retaining means for retaining the spheres supplied from said supply means, said holding means, horizontal surface which is disposed the receptacle With respect to the supply means while maintaining a state in which one end surface of the supply means and the surface of the holding means are in contact with each other. Surface from bottom to top Is configured to be movable Te, further, the one end surface of the supply means is characterized that you have contact with the surface of the holding means in the lower than the top portion of said holding means, such retaining means is supplied to the surface, a sphere which is held in the receiving portion is the be separated into monocytes and abnormal ball by the action of gravity, abnormal spheres accuracy monocytes and abnormal sphere because it is easy to remain in the reservoir Can be separated well .
[0007]
In the abnormal sphere sorting device, if the holding means is provided with a vibration means for applying vibration, even when the abnormal sphere is held by the receiving portion, it can be dropped by the vibration.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the abnormal sphere sorting device of the present invention will be described with reference to FIGS. 1 to 5 showing one embodiment of the present invention for sorting abnormal spheres from solder balls mainly composed of monocytes. FIG. 1 is a schematic configuration diagram showing an abnormal sphere sorting device of the present embodiment. FIG. 2 is an enlarged plan view of a main part of FIG. 1, and is a plan view of a punching member provided in the abnormal sphere sorting device. FIG. 3 is an enlarged view of a main part of FIG. 2, and is a diagram for explaining a state in which a solder ball is held. FIG. 4 is an enlarged view of a main part of FIG. 1 and is a diagram for explaining a state of sorting abnormal spheres. FIG. 5 is a diagram for explaining the sweeping means and the vibration means provided in the abnormal sphere sorting apparatus.
[0009]
In the abnormal ball sorting device of the present embodiment described below, the solder balls are targeted. However, according to the abnormal ball sorting device of the present invention, a ball made of metal such as a bearing ball, a copper ball, a resin, For example, abnormal spheres generated on a spacer ball used in a liquid crystal display device which is a sphere made of glass or the like can be separated. In addition, in the following description, a solid ball is used as an example of an abnormal sphere, but an elliptical sphere whose major axis dimension is larger than a predetermined diameter dimension, and roundness such as an ellipse is within a predetermined range. The present invention can also be applied to a sphere having no diameter or a diameter larger than a predetermined range.
[0010]
(Embodiment 1)
As shown in FIG. 1, the abnormal ball sorting apparatus 1 of the present embodiment includes a substantially cylindrical holding means 11 that rotates counterclockwise around an axis, and a supply member 121 that supplies solder balls 9 to the holding means 11. A supply member 12 provided with a drive member 122 coupled to the supply member 121 and disposed in the supply region A on the outer peripheral portion of the holding means 11, and a monocyte collection container 14 disposed on the outer peripheral monocyte collection region B. , And an abnormal sphere collection container 13 disposed below the supply means 3.
[0011]
The abnormal ball sorting apparatus 1 having the above configuration supplies the solder balls 9 to the holding means 11 in the supply area A on the upstream side in the rotation direction of the holding means 11, and as described in detail below, from the solder balls 9 alone. The sphere 90 and the abnormal sphere 91 are separated, the holding means 11 transfers the monocyte 90 to the monocyte collection area B and collects it in the monocyte collection container 14, and the abnormal sphere remaining in the supply area A by the supply means 12. 91 is dropped and collected in the abnormal sphere collection container 13.
Hereinafter, the structure of the holding means 11 and the supply means 12 will be described in detail.
[0012]
[Holding means]
As shown in FIG. 1, the holding means 11 has a substantially cylindrical base 112 rotatably supported by a bearing (not shown) so that the shaft core is horizontal, and a perforation mounted so as to be in close contact with the outer peripheral surface of the base 112. Member 111. A rotation driving means (not shown) capable of adjusting the rotation speed is connected to the base body 112, so that the holding means 11 can rotate around its axis and the rotation speed can be adjusted.
As shown in FIG. 2, the perforated member 111 is formed by forming a through hole 114 in a sheet-like member formed of a material such as metal, resin, or rubber by a technique such as etching, laser processing, or machining. . The through holes 114 are preferably arranged according to a regular pattern such as a staggered pattern or a lattice pattern so that the positions of the through holes 114 can be digitized. The planar shape of the receiving portion 113 may be an elliptical shape, a long hole shape, a triangular shape, or a rectangular shape.
[0013]
As shown in FIG. 3, the perforating member 111 is mounted so as to be in close contact with the outer peripheral surface of the base body 112, so that the bottomed hole-shaped receiving portion 113 whose bottom surface is the outer peripheral surface of the base body 112 is the holding means 11. It will be arranged on the outer peripheral surface.
The size of the receiving portion 113 is basically formed so that the monocyte 90 can be accommodated. For example, as shown in FIG. 3, when differentiating spherical abnormal spheres 91 having small spheres 92 having a diameter of 0.5 times or more with respect to the diameter d of the monocyte 90 are separated, the receiving portion 113 Is approximately the same as the diameter d of the monocyte 90, and the diameter of the receiving portion 113 may be 1.5 times or less the diameter d of the monocyte 90.
[0014]
[Supply means]
The supply means 12 is connected to the supply member 121 having a substantially U-shaped cross-sectional shape in which at least one end face in the longitudinal direction is open and one thickness direction is open, and the holding means 11. Drive means 122 that linearly moves with a predetermined dimension in the radial direction.
The supply member 121 is arranged in a range of up to 90 degrees to the right of the top of the holding means 11 in the drawing so that the opening end surface abuts on the outer peripheral surface of the holding means 11 and the opening in the thickness direction faces upward. Note that the cross-sectional shape of the supply member 121 in the thickness direction may be U-shaped, V-shaped, or the like, as long as at least one of them is open. Moreover, it is preferable to form the opening edge part with soft members, such as rubber | gum and a brush, so that the outer peripheral surface of the holding means 11 may not be damaged.
The driving unit 122 is disposed so that the opening end surface of the supply member 121 that is in contact with the outer peripheral surface of the holding unit 11 is separated from the outer peripheral surface. As the drive member 122, a linear motion member combining a linear motion guide member and a motor, a known linear motion mechanism such as an air cylinder, or the like can be used.
[0015]
The operation of the abnormal sphere sorting device 1 configured as described above will be described below.
First, the solder ball 9 is supplied to the outer peripheral surface by the supply member 121 while rotating the holding means 11 counterclockwise. At this time, as shown in FIG. 4, the supplied solder ball 9 is a space formed by the outer peripheral surface of the holding means 11 and the opening end portion of the supply member 121 in contact with the outer peripheral surface (hereinafter referred to as a retention portion). The supply amount of the solder balls 9 and the number of rotations of the holding means 11 are set as appropriate so as to stay in the nozzle.
[0016]
The monocytes 90 in the supplied solder balls 9 are conveyed toward the monocyte collection area B while being held by the receiving portion 113, but the abnormal sphere 91 remains in the staying portion.
The reason why the abnormal sphere 91 remains in the staying portion is not theoretically clear, but is estimated as follows. That is, as shown in FIG. 3, when the abnormal sphere 91 is stored in the receiving portion 113, the abnormal sphere 91 is stored in a state where a part of the abnormal sphere 91 protrudes from the receiving portion 113. The abnormal sphere 91 has a higher center of gravity than the monocyte 90, and falls off the receiving portion 113 due to the action of gravity and thus remains in the staying portion. In addition, as shown in FIG. 4, the abnormal sphere 91 in the staying portion is restricted in movement by the surrounding solder balls 9 and is difficult to move in the staying portion, which is a cause of remaining in the contact portion. Conceivable.
[0017]
As described above, the abnormal sphere 91 held in the receiving portion 113 falls off toward the staying portion due to the action of gravity. Therefore, it is necessary to supply the solder ball 9 to an appropriate place of the holding means 11 so that the abnormal sphere 91 is easily dropped and the monocyte 90 is not easily dropped. Therefore, as shown in FIG. 1, the supply member 121 is disposed at a location where the tangent line s of the point where the supply member 121 contacts the outer peripheral surface of the holding unit 11 intersects with the horizontal plane at an angle of 30 degrees to 60 degrees. It is preferable to do. Furthermore, it is preferable that the angle is 45 degrees.
[0018]
The sorted monocytes 90 are conveyed from the region A to the region B while being held by the receiving portion 113 and are collected in the monocyte collection container 14.
The abnormal sphere 91 remaining in the staying portion moves the supply member 121 by the driving unit 122 at an appropriate timing, and a gap is formed between one end surface of the supply member 121 that contacts the outer peripheral surface of the holding unit 11 and the outer peripheral surface. By forming and dropping the abnormal sphere 91 downward, the abnormal sphere 91 is recovered into the abnormal sphere collection container 13. The timing is determined by, for example, confirming the number of monocytes 90 held by the receiving unit 113 by an imaging unit arranged so that the outer peripheral surface of the holding unit 11 can be observed on the downstream side in the vicinity of the supply unit 12. It may be. That is, if a large number of abnormal spheres 91 remain in the staying portion, the number of monocytes 90 held by the receiving portion 113 decreases. Therefore, if the number is less than the threshold value, the abnormal spheres may be stored in the abnormal sphere collection container 13 described above.
[0019]
As shown in FIG. 3, the depth of the receiving portion 113 of the holding means 11 described above may be 0.5 to 1 times the diameter d of the monocyte 90. Further, the side wall of the receiving portion 113 may be substantially tapered so that the size of the opening end surface of the receiving portion 113 is larger than the diameter of the bottom surface. If the receiving part 113 is formed as described above, even when the abnormal sphere 91 is held by the receiving part 113, the abnormal sphere 91 can be easily dropped.
[0020]
Further, as shown in FIG. 5, if the sweeping means 15 provided with, for example, a brush that contacts the outer peripheral surface of the holding means 11 is disposed between the top of the holding means 11 and the supply area A, the abnormal sphere 91 is formed. Even when it is held and transported by the receiving portion 113, it can be swept out by the sweeping means 15.
Further, if the vibration means 16 provided with an air cylinder or the like is disposed in the vicinity of the holding means 11 and vibration is given to the holding means 11, even when the abnormal sphere 91 is held by the receiving portion 113, it drops off due to the vibration. Can be made.
[0021]
(Embodiment 2)
Next, another embodiment of the present invention will be described with reference to FIG.
The abnormal sphere sorting device 3 according to this embodiment includes an endless belt-shaped piercing member 311 having a receiving portion capable of holding a monocyte 90 on the front surface, and a piercing member 311 that drives the upper side of the piercing member 311 substantially upward. A holding means 31 having a pair of substantially cylindrical base bodies 312 attached to both parts, a supply means 32 similar to the supply means 12, and a monocyte collection container disposed in a monocyte collection area D on the downstream side 34 and an abnormal sphere collection container 33 disposed below the supply means 32. The holding means 31 has an angle of 30 to 60 degrees, preferably 45 degrees, with respect to the horizontal surface of the piercing member 311. The supply means 32 is disposed in the upstream supply region C in the traveling direction of the upper piercing member 311, and the opening end surface in the longitudinal direction is in contact with the surface of the piercing member 311 and the opening in the thickness direction is provided. Seems to face upwards A gutter-shaped supply member 321 is disposed, and a similar drive means 322 and the driving means 122.
The abnormal sphere sorting apparatus 3 according to this embodiment is configured to sort the monocytes 90 and the abnormal spheres 91 basically by driving the perforating member 311 like a belt conveyor in the same manner as the abnormal sphere sorting apparatus 1 described above. is there.
[0022]
(Embodiment 3)
Still another embodiment of the present invention will be described with reference to FIG.
The abnormal sphere sorting device 4 according to this embodiment includes a flat plate-shaped perforated member 411 that is disposed so as to be inclined at an angle of 30 ° to 60 °, preferably 45 ° with respect to a horizontal plane, and has a receiving portion on a front portion. Holding means 41, supply means 42 similar to the supply means 12, monocyte collection container 44 and abnormal sphere collection container 43 disposed below the piercing member 41, and the supply means 42 has a longitudinal direction. And a bowl-shaped supply member 421 arranged so that the opening in the thickness direction faces the surface of the piercing member 411 and the opening in the thickness direction faces upward, and is movable in the vertical direction along the surface of the piercing member 411. ing.
In the abnormal sphere sorting device 4 of the present embodiment, the supply means 42 is disposed at the upper end of the piercing member 411, the solder balls 9 are supplied to the surface of the piercing member 41, and the supply means 42 is supplied to the lower end of the piercing member 41. The abnormal sphere 91 that has been separated and remains in the supply means 42 is recovered in the abnormal sphere recovery container 44 and the piercing member 41 is tilted. Is collected in the monocyte collection container 43.
[0023]
As described above (Embodiment 1) to (Embodiment 3), the abnormal sphere sorting device of the present invention includes a receiving portion that can hold a monocyte in a front portion and is inclined at an appropriate angle with respect to a horizontal plane. Since the holding means is provided, the abnormal sphere in the solder ball supplied to the surface of the holding means and held in the receiving part falls off due to the action of gravity, and the monocyte remains in the receiving part. Monocytes and abnormal spheres can be separated. In addition, a bowl-shaped supply means is arranged so that the opening end surface in the longitudinal direction contacts the surface of the holding means and the opening in the thickness direction faces substantially upward, and the holding means is relatively upward with respect to the supply means. By moving to, it is possible to continuously separate monocytes and abnormal spheres, so that it is possible to efficiently obtain the solder balls 9 with less contamination of the abnormal spheres 91.
[0024]
(Embodiment 4)
Still another embodiment of the abnormal sphere sorting device of the present invention will be described with reference to FIG. The abnormal sphere sorting device 1 'of this embodiment is basically a unit in which the abnormal sphere sorting device 1 described in [Embodiment 1] is connected as a single unit.
That is, the abnormal sphere sorting device 2 includes a unit a including a holding unit 21a and a supply unit 22a similar to the holding unit 11 and the supply unit 12 described above, a unit b including a holding unit 21b and a supply unit 22b, and an abnormal sphere. Solder balls 9 having a recovery container 23 and a monocyte recovery container 24, the unit a being upstream, the unit b being downstream from the unit a, and a region Ba downstream of the holding means 21a of the unit a Is provided so that the supply means 22b of the unit b receives, the abnormal ball collection container 23 is provided below the supply means 22a and 22b, and the monocyte collection container 24 is provided below the region Bb on the downstream side of the unit b. Is.
According to the abnormal sphere sorting device 2 having the above-described configuration, even when the abnormal sphere 91 is held by the holding means 21a and is transported to the area Ba, the abnormal sphere 91 can be sorted by the unit b. It is possible to efficiently obtain solder balls 9 with a small amount of abnormal spheres 91 mixed therein.
[0025]
(Example)
Using the abnormal sphere sorting devices 1 and 2 of (Embodiment 1) and (Embodiment 4) described above and a conventional slope rolling type sorting device, as shown in FIG. Table 1 shows the results obtained by separating the abnormal spheres 91 having different diameters from the large number of solder balls 9 and having a diameter of the small sphere 92 larger than that of the monocyte 90 by 0.5 times or more. Show. The sorting accuracy in Table 1 is the ratio of abnormal spheres 91 mixed in the solder balls 9 collected in the monocyte collection container.
[0026]
[Table 1]

[0027]
【The invention's effect】
As described above, according to the abnormal sphere sorting apparatus of the present invention, monocytes and abnormal spheres can be accurately sorted by the holding means having the characteristic structure, and in addition, they are continuously sorted by the supply means. Therefore, it is possible to obtain a sphere with few abnormal spheres mixed very efficiently.
[Brief description of the drawings]
FIG. 1 is a schematic view showing one embodiment of the abnormal sphere sorting device of the present invention.
FIG. 2 is a plan view of a piercing member provided in the abnormal sphere sorting device.
FIG. 3 is a diagram illustrating a state in which a solder ball is held.
FIG. 4 is a diagram illustrating a state of sorting abnormal spheres.
FIG. 5 is a diagram for explaining sweeping means and vibration means provided in the abnormal sphere sorting device;
FIG. 6 is a schematic view showing another embodiment of the abnormal sphere sorting device of the present invention.
FIG. 7 is a schematic view showing still another embodiment of the abnormal sphere sorting device of the present invention.
[Explanation of symbols]
1: Abnormal sphere sorting device 11: Holding means, 111: Perforating member, 112: Substrate, 113: Receiving part 12: Supply means, 121: Supply member, 122: Drive member 13: Abnormal sphere collection container, 14: Monocyte collection Container 15: Sweeping means, 16: Excitation means 9: Solder ball, 90: Monocyte, 91: Abnormal sphere, 92: Small sphere

Claims (2)

An apparatus for separating abnormal spheres from spheres mainly composed of monocytes, comprising a holding means having a receiving portion capable of holding monocytes on a front portion, and one open end face, and the one end face is A supply means which is arranged in contact with the surface of the holding means and supplies a sphere from the opening of the one end surface to the surface of the holding means; and a surface of the holding means and an open end of the supply means formed on a surface of the holding means and a reservoir for storing the spheres supplied from said supply means, said holding means, so that the surface which is disposed the receiving portion is inclined at a predetermined angle with respect to the horizontal plane And the surface of the holding means moves from the lower side toward the upper side relative to the supply means while maintaining the state where the one end surface of the supply means is in contact with the surface of the holding means. Configured to be possible Further, the one end surface of the supply means, the abnormality ball sorting apparatus characterized that you in below the top is in contact with the surface of the holding means of the holding means. The abnormal sphere sorting device according to claim 1, further comprising a vibrating unit that applies vibration to the holding unit.

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