JP5861914B2 - Vibrating feeder - Google Patents

Description

  The present invention relates to a vibration feeder that conveys an object to be conveyed by applying vibration to a conveyance surface.

  In general, in the manufacturing process of a substantially rectangular parallelepiped workpiece (for example, a chip-type electronic component), when plating is performed to form an electrode on the workpiece, dummy balls made of a single sphere are mixed in the workpiece as an electrical binder. Since the dummy balls are necessary for forming the electrodes on the workpiece, the dummy balls become unnecessary after the formation of the electrodes is completed. Therefore, conventionally, a vibration feeder type sorting device has been proposed that can sort the workpiece and the dummy ball in order to remove the dummy ball mixed in the workpiece for which the electrode has been formed (see, for example, Patent Document 1).

  The conventional sorting apparatus has a transport plate, and the transport plate has a transport surface for transporting a supplied object to be transported (a work having a substantially rectangular parallelepiped shape mixed with dummy balls). The conveying surface is inclined downward from one side in the width direction toward the other side, and is inclined downward from one side in the longitudinal direction toward the other side. Further, in the middle of the transport surface in the longitudinal direction, a separation wire is provided over the entire width direction of the transport surface.

  In the sorting apparatus having the above configuration, among the objects to be conveyed supplied to the conveyance surface, the workpiece comes into surface contact with the conveyance surface and has a large frictional force, so that the workpiece is slid down and removed (dropped off) on the inclined conveyance surface. Instead, it is transported downstream by the vibration of the transport surface and reaches the separation wire. And the workpiece | work which reached the separation wire gets over the separation wire by the vibration of a conveyance surface, and is conveyed further downstream.

  On the other hand, the dummy ball of the object to be transported is in point contact with the transport surface and has a small frictional force, so even if the transport surface vibrates, it is not easily transported to the downstream side as much as the workpiece. It is removed from the transport surface by rolling in the downward tilt direction of the transport surface under its own weight. In some cases, the dummy ball also reaches the separation wire, but even if it reaches the separation wire, it rolls in the downward inclined direction of the conveyance surface and is excluded from the conveyance surface.

JP 2005-224762 A

  By the way, not only a dummy ball consisting of a single sphere (hereinafter referred to as a “single dummy ball”) but also a plurality of, for example, two dummy balls formed by connecting two spheres in a straight line. (Hereinafter referred to as “bonded dummy balls”) may be mixed. The combined dummy balls make point contact with the conveyance surface at a plurality of locations. Further, even the single dummy ball reaches the separation wire in some cases, so that the combined dummy ball that comes into contact with the transfer surface at a plurality of positions is more easily transferred than the single dummy ball. In particular, when the line passing through the center of the sphere (alignment direction) is in a posture along the tilt direction, the conveying surface is not rolled, but is easily conveyed and reaches the separation wire.

  When the combined dummy ball is conveyed to the separation wire, it is once dammed up by the separation wire. Then, workpieces are sequentially conveyed from the upstream side of the damped coupled dummy balls. In this case, the bonded dummy ball may get over the separation wire and be transported to the downstream side so that the workpiece is brought in when the workpiece passes over the separation wire. As a result, when supplying the workpiece to the next process, there arises a disadvantage that the combined dummy balls are mixed.

  Therefore, an object of the present invention is to provide a vibration feeder that can be surely excluded even if the dummy balls mixed in the workpiece are combined dummy balls in which spheres are connected side by side.

The present invention includes a transport unit having a transport surface for transporting a transported object to which vibration is applied, and the transported object in which dummy balls are mixed in a substantially rectangular parallelepiped work, the work and the dummy A vibration feeder for sorting into balls, wherein the feeder is formed on at least a part of the conveying surface and has an inclined surface inclined sideways with respect to the conveying direction, and provided on the inclined surface and downstream of the conveying width. The baffle wall part which narrows the side and the lower side and forms a passage of a work, and the discharge part which is below the inclination of the inclined surface and excludes the dummy ball from the conveyance surface is provided. Yes.

  In the above configuration, the inclined surface is inclined laterally with respect to the conveying direction, but among the objects to be conveyed, the substantially rectangular parallelepiped workpiece is in surface contact with the inclined surface without being excluded from the inclined surface. It is conveyed to the baffle wall by the vibration of the conveyance surface, moves downstream along the baffle wall, and moves further downstream from the passage. In addition, a single dummy ball consisting of a single sphere in point contact with the inclined surface among the objects to be transferred rolls in the downward inclination direction of the inclined surface by its own weight and is excluded from the conveying surface.

  And, in the transported object, the bonding dummy balls that are point-contacted with the inclined surface at a plurality of locations and in which the plurality of spheres are connected side by side are in a posture in which the line connecting the axes of the spheres is along the inclination direction of the inclined surface It is conveyed to the downstream side without rolling the inclined surface, but when it is conveyed to the baffle wall and hits the baffle wall, the posture is changed along the direction of the baffle wall due to vibration of the conveyance surface, The baffle wall is arranged in such a direction that the conveyance width is narrowed toward the downstream side and the lower side, so the combined dummy ball whose posture is changed rolls the inclined surface in the downward inclined direction by its own weight and is excluded from the inclined surface. Is done.

  In the vibration feeder of the present invention, it is possible to adopt a configuration in which a delivery unit that sends an object to be conveyed to a side having a height higher than the center of the conveyance width on the inclined surface is arranged at the most upstream side of the conveyance unit. .

  According to this configuration, when the object to be conveyed is sent from the sending part to a side having a height higher than the center of the conveying width on the conveying surface, the portion to which the object to be conveyed is sent from the position where the object is sent reaches the passage. Since the distance becomes longer than the distance along the transport direction, the distance at which the dummy balls (the single dummy ball and the combined dummy ball) roll to be removed becomes longer.

  In the vibration feeder of the present invention, a plurality of the inclined portions are provided side by side in the transport direction, and the inclined surface of the upstream inclined portion and the inclined surface of the downstream inclined portion arranged in the upstream inclined portion are opposite to each other. It is possible to adopt a configuration that is inclined in a direction, and the upstream inclined portion and the inclined portion downstream of the upstream inclined portion are connected via a passage.

  In the above configuration, dummy balls (mainly coupled dummy balls) that could not be removed from the conveying surface at the upstream inclined portion reach the downstream side through the passage, but the lower inclined portion of the inclined surface at the downstream inclined portion. Rolls in the direction and is removed from the transport surface.

  In the vibration feeder according to the present invention, the height of the continuous portion of the downstream inclined portion that is continuous with the passage of the upstream inclined portion substantially matches the height of the passage of the upstream inclined portion. A configuration can be employed. According to this configuration, since the height of the inclined portion gradually decreases for each inclined portion on the downstream side, the object to be conveyed is easily conveyed smoothly from the upstream side to the downstream side.

  The vibration feeder according to the present invention has an inclined surface inclined to the side with respect to the conveyance direction of the object to be conveyed, and includes a baffle wall portion that narrows the conveyance width toward the downstream side and the lower side. If a combined dummy ball in which a plurality of spheres are coupled side by side is conveyed downstream and reaches the baffle wall, the posture of the combined dummy ball is changed to follow the direction of the baffle wall. Since the combined dummy ball whose posture is changed in the direction rolls in the downward inclined direction by its own weight, it can be reliably removed from the transport surface.

It is a perspective view showing the whole structure of the vibration feeder which is one Embodiment of this invention. It is a top view showing the whole structure. It is a side view showing the whole structure. It is a rear view showing the whole structure. It is a top view showing the whole structure of the trough. It is a side view of the trough. It is a cross-sectional arrow view of the trough at a predetermined position, (a) is an XX cross section in FIG. 5, (b) is a YY cross section in FIG. 5, (c) is a ZZ cross section in FIG. (D) is the AA-AA cross section in FIG. 5, (e) is the AB-AB cross section in FIG. 5, (f) is AC-AC in FIG. It is the figure showing the relationship between the same baffle wall part, a baffle wall part, and a trough, (a) is a perspective view showing the shape of a 1st baffle wall part, (b) is the AD-AD cross-sectional view in FIG. It is.

  Hereinafter, a vibration feeder according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, the vibration feeder 1 according to the embodiment includes a bowl feeder 2 and a linear feeder 3.

  Since the bowl feeder 2 is generally used, only the outline will be described. The bowl feeder 2 has a general configuration and includes a bowl portion 4 and a vibration device 5. The bowl portion 4 has a spiral first conveyance path 40 formed on the inner peripheral wall thereof. The first conveying path 40 is an inclined path that is inclined upward toward the downstream side in accordance with a spiral. Above the bowl part 4, a hopper 6 for dropping the object to be conveyed onto the bowl part 4 is arranged. In the present embodiment, the object to be conveyed is an electronic component (for example, an IC chip having a substantially rectangular parallelepiped shape), and is hereinafter referred to as a work W.

  The linear feeder 3 includes a trough 7 and a drive unit 8 that horizontally vibrates the trough 7. The trough 7 is for receiving the workpiece W from the first conveying path 40 of the bowl feeder 2 and conveying it downstream. The drive unit 8 has a general configuration, and a fixed unit (base unit) 81 and a movable unit 82 are connected to each other via a vibration isolation spring mechanism 80. The trough 7 is connected to the upper end of the movable part 82 substantially horizontally. Then, the trough 7 is vibrated horizontally by the resonance of the anti-vibration spring mechanism 80, so that the workpiece W is sequentially conveyed to the downstream side.

  As shown in FIGS. 2, 5 to 7, the trough 7 has a transport surface (first to fourth transport surfaces to be described later) on the upper surface, and a supply unit 9 disposed on the upstream side and the supply unit 9 And a transport unit 10 disposed on the downstream side. The supply unit 9 includes a supply path 90 on its upper surface. The supply section 9 is integrally connected to the bowl section 4 so that the supply path 90 is flush with the most downstream end of the first transport path 40 of the bowl section 4. As shown in FIG. 7A, the supply path 90 is formed in a V-shaped cross section.

  The entire top surface of the transport unit 10 is a transport surface. The transport unit 10 is disposed on the downstream side of the supply unit 9 via the sending unit 11. The delivery unit 11 includes a delivery surface 11 a set at substantially the same height as the supply path 90 on the upper surface thereof. On both sides in the width direction of the delivery surface 11a, vertical walls 110 are erected so that the workpiece W does not come off (is not excluded) from the delivery surface 11a (see, for example, FIGS. 1, 2 and 5).

  Returning to FIG. 2, FIG. 5 to FIG. 7, the transport section 10 is integrally formed from a plurality of transport area sections with the direction along the transport direction as the longitudinal direction. In this case, the transport area section is configured so that the first transport area section 101, the second transport area section 102, the third transport area section 103, and the fourth transport area section 104 are sequentially from the upstream side (the sending section 11 side) to the downstream side. The first transport area 101, the second transport area 102, the third transport area 103, and the fourth transport area 104 have separate structures. And the conveyance area | region part adjacent to an upstream and downstream is mutually comprised integrally by means, such as set screw S1.

  In FIG. 7, the XX position is a cross section of the supply unit 9, and YY and ZZ both represent midway cross sections of the first conveyance region unit 101, and among these, ZZ is a discharge unit described later. Represents the starting proximal end position. AA-AA represents a mid-section of the second transport area 102, and AB-AB and AC-AC represent mid-sections of the third transport area 103, respectively.

  The upper surface of the first transport area 101 is a first transport surface 1011. The upper surface of the second transport area 102 is a second transport surface 1021. The upper surface of the third transport area 103 is a third transport surface 1031. The upper surface of the fourth transport area 104 is a fourth transport surface 1041. In other words, the transport surface includes a first transport surface 1011, a second transport surface 1021, a third transport surface 1031, and a fourth transport surface 1041.

  The first conveyance surface 1011, the second conveyance surface 1021, and the third conveyance surface 1031 are set to have substantially the same length in the longitudinal direction. The delivery surface 11a is set to a length shorter in the longitudinal direction than the first transport surface 1011, the second transport surface 1021, and the third transport surface 1031. Further, the sending surface 11a, the first transport surface 1011, the second transport surface 1021, the third transport surface 1031 and the fourth transport surface 1041 are set to have the same width with the center in the width direction matched.

  The 1st conveyance area part 101, the 2nd conveyance area part 102, and the 3rd conveyance area part 103 are equivalent to an inclined part, respectively, and the 1st conveyance surface 1011, the 2nd conveyance surface 1021, and the 3rd conveyance surface 1031 are respectively The inclined surface is inclined to the side with respect to the transport direction.

  Specifically, the second transport surface 1021 is an inclined surface that inclines to the right, which is one side in the width direction, when viewed from the downstream side. The first conveyance surface 1011 and the third conveyance surface 1031 are inclined surfaces that are inclined to the left side, which is the other side in the width direction, when viewed from the downstream side. In short, the inclined surfaces of the first conveyance area 101, the second conveyance area 102, and the third conveyance area 103 are set to alternately incline toward the opposite side on the downstream side. The delivery surface 11a is also an inclined surface inclined laterally with respect to the transport direction. Specifically, the delivery surface 11a is an inclined surface that inclines to the right, which is one side in the width direction, when viewed from the downstream side. In short, the delivery surface 11a is inclined to the opposite side to the first transport surface 1011. In addition, the inclination directions of the first conveyance surface 1011, the second conveyance surface 1021, the third conveyance surface 1031, and the delivery surface 11 a are respectively indicated by arrow lines 10 a.

  As shown in FIGS. 1, 2, and 5, the delivery surface 11 a, the first transport surface 1011, the second transport surface 1021, and the third transport surface 1031 have a delivery baffle wall portion 12 and a first baffle wall portion, respectively. 13, a second baffle wall 14 and a third baffle wall 15 are provided. Each baffle wall portion is formed in a substantially triangular shape (right-angled triangle) in plan view, and has a height (thickness) that the workpiece W transported from the upstream side cannot get over.

  Each of the baffle wall portions 12, 13, 14, 15 has a certain height, and the height of each of the baffle wall portions 12, 13, 14, 15 is set to be the same. The delivery baffle wall 12 is on the delivery surface 11a, the first baffle wall 13 is on the first transport surface 1011, the second baffle wall 14 is on the second transport surface 1021, and the third baffle wall 15 is on the third. It is fixed to the conveyance surface 1031 respectively. The baffle wall portions 12, 13, 14, and 15 are disposed apart from each other in the transport direction.

  FIG. 8A shows the shape of the first baffle wall portion 13, but is used as a diagram for explaining the shapes of the other baffle wall portions 12, 14, and 15. As shown in the figure, each baffle wall portion 12, 13, 14, 15 has a bottom surface (reference numeral omitted) placed on the delivery surface 11a and each transport surface 1011, 1021, 1031, 1041, and the bottom surface thereof. Upper surface 12a, 13a, 14a, 15a which opposes on the upper side, baffle wall surface 12b, 13b, 14b, 15b, longitudinal direction wall surface 12c, 13c, 14c, 15c, and width direction wall surface 12d, 13d, 14d, 15d are provided. Yes.

  Each baffle wall surface 12b, 13b, 14b, 15b is a wall surface that can come into contact with (contact with) a workpiece W (and a solder ball described later) conveyed from the upstream side and rises from each conveyance surface. The longitudinal wall surfaces 12c, 13c, 14c, and 15c and the width wall surfaces 12d, 13d, 14d, and 15d are surfaces that continue to the baffle wall surfaces 12b, 13b, 14b, and 15b. Each baffle wall surface 12b, 13b, 14b, 15b is a wall surface at a position corresponding to a hypotenuse in a right triangle when each baffle wall portion 12, 13, 14, 15 is projected in plan view.

  In each of the baffle wall portions 12, 13, 14, and 15, the longitudinal wall surfaces 12c, 13c, 14c, and 15c are aligned with the end surfaces of the delivery surface 11a or the transport surfaces 1011, 1021, and 1031. In addition, the width-direction wall surfaces 12d, 13d, 14d, and 15d in the baffle wall portions 12, 13, 14, and 15 are set to be smaller than the conveyance width that is the width of the delivery surface 11a or the respective conveyance surfaces 1011, 1021, and 1031. Yes.

  As shown in FIG. 5, specifically, the longitudinal wall surface 12c of the delivery baffle wall portion 12 is along the other side edge at a position substantially coincident with the other side edge of the delivery surface 11a, and the width direction wall surface 12d is delivered. It arrange | positions along the width direction of the surface 11a. The longitudinal wall surface 13c of the first baffle wall portion 13 is along the one side edge at a position substantially coincident with the one side edge of the first conveyance surface 1011 and the width direction wall surface 13d is in the width direction of the first conveyance surface 1011. Are arranged along. The longitudinal wall surface 14c of the second baffle wall portion 14 is along the other side edge at a position substantially coinciding with the other side edge of the second conveyance surface 1021, and the width direction wall surface 14d is along the width direction of the second conveyance surface 1021. Are arranged. The longitudinal wall surface 15c of the third baffle wall portion 15 is along the one side edge at a position substantially coinciding with the one side edge of the third conveyance surface 1031 and the width direction wall surface 15d is along the width direction of the third conveyance surface 1031. Are arranged.

  By arranging the baffle walls 12, 13, 14, and 15 in this manner, the baffle walls 12b, 13b, 14b, and 15b are inclined linearly with respect to the transport direction when the trough 7 is viewed in plan. Arranged to do. Then, the baffle wall surfaces 12b, 13b, 14b, and 15b of the baffle wall portions 12, 13, 14, and 15 that are arranged adjacent to each other in the transport direction with an interval are inclined in directions opposite to each other with respect to the transport direction. Arranged to do.

  Specifically, the baffle wall surface 12b of the delivery baffle wall portion 12 is closer to one side in the width direction toward the downstream side thereof, and the baffle wall surface 13b of the first baffle wall portion 13 is closer to the other side in the width direction toward the downstream side thereof. The baffle wall surface 14b of the second baffle wall portion 14 is closer to the one side in the width direction toward the downstream side, and the baffle wall surface 15b of the third baffle wall portion 15 is inclined to approach the other side in the width direction toward the downstream side. .

  FIG. 8B illustrates an AD-AD cross-sectional view including the trough 7 of the portion where the first baffle wall portion 13 in FIG. 5 is disposed, and is a cross-section of the middle portion of the first transport region portion 101. . As shown in this figure, the baffle wall surface 13b of the first baffle wall portion 13 is arranged along the vertical direction even if the first transport surface 1011 is inclined. Similarly, the baffle wall surface 12b of the delivery baffle wall portion 12 is arranged along the vertical direction on the delivery surface 11a. Further, the baffle wall surface 14b of the second baffle wall portion 14 and the baffle wall surface 15b of the third baffle wall portion 15 are arranged on the second conveyance surface 1021 and the third conveyance surface 1031 along the vertical direction, respectively. In addition, the 4th conveyance surface 1041 of the 4th conveyance area | region part 104 is not equipped with the baffle wall part.

  That is, in each of the baffle wall portions 12, 13, 14, and 15, the longitudinal wall surfaces 12c, 13c, 14c, and 15c are substantially aligned with the edges of the delivery surface 11a and the transport surfaces 1011, 1021, and 1031. In each of the baffle wall portions 12, 13, 14, and 15, the width-direction wall surfaces 12d, 13d, 14d, and 15d are smaller than the width of the delivery surface 11a and the transport surfaces 1011, 1021, and 1031.

  With this configuration, as shown in FIG. 5, a first passage formed between a part of the sending surface 11 a and a part of the first conveying surface 1011 between the sending part 11 and the first conveying area part 101 ( (Continuous part) 16 is communicated. The first transport area 101 and the second transport area 102 communicate with each other through a second passage (continuous portion) 17 formed using a part of the first transport surface 1011 and the second transport surface 1021. The second transport area 102 and the third transport area 103 are communicated with each other by a third passage (continuous portion) 18 formed using a part of the second transport surface 1021 and the third transport surface 1031. The third transfer area 103 and the fourth transfer area 104 are communicated with each other by a fourth passage (continuous portion) 19 formed by using a part of the third transfer surface 1031 and the fourth transfer surface 1041. .

  In the present embodiment, the height of the continuous portion in the downstream inclined portion that is continuous with the upstream inclined portion passage substantially matches the height of the upstream inclined portion passage. Specifically, in the second passage 17, the height of the first transport surface 1011 of the first transport region portion 101 substantially matches the height of the second transport surface 1021 of the second transport region portion 102, and the third passage In FIG. 18, the height of the second transport surface 1021 of the second transport region portion 102 substantially matches the height of the third transport surface 1031 of the third transport region portion 103. In the first passage 16, the height of the delivery surface 11 a of the delivery unit 11 substantially matches the height of the first transport surface 1011 of the first transport region 101.

  That is, the first transport surface 1011 is at a position lower than the feed surface 11a by the amount of inclination of the sending surface 11a in the width direction, and the second transport surface 1021 is the first amount of tilt of the first transport surface 1011 in the width direction. The third transport surface 1031 is at a position lower than the second transport surface 1021 by the amount of the inclination of the second transport surface 1021 in the width direction, and the fourth transport surface 1041 is the third transport surface. The surface 1031 is positioned lower than the third transport surface 1031 by the amount of inclination in the width direction (see (d), (e), and (f) of FIG. 7).

  Depending on the configuration of each of the baffle walls 12, 13, 14, and 15 described above and their arrangement positions on the delivery surface 11 a, the first transport surface 1011, the second transport surface 1021, and the third transport surface 1031, The transport width of the delivery surface 11a, the first transport surface 1011 in the first transport region 101, the second transport surface 1021 in the second transport region 102, and the third transport surface 1031 in the third transport region 103 is downstream. The narrower the conveyance surface is, the narrower the side and the lower the side, and the narrower transfer surface is used as the first passage 16, the second passage 17, the third passage 18 and the fourth passage 19.

  The sending section 11, the first transport area section 101, the second transport area section 102, and the third transport area section 103 are provided in the width direction wall surfaces 12d, 13d, 14d, and the baffle wall sections 12, 13, 14, and 15, respectively. The area is divided with the position of 15d as a boundary, and as described above, the sending section 11 and the first transport area section 101, the first transport area section 101 and the second transport area section 102, the second transport area section 102 and the third transport The region portion 103, the third transport region portion 103, and the fourth region portion are integrally configured by means such as a set screw S2. The set screw S2 is arranged at a position where there is no hindrance to the transfer of the workpiece W on each transfer surface.

  In this embodiment, the width direction position of the delivery baffle wall portion 12 on the delivery surface 11a, the width direction position of the first baffle wall portion 13 on the first transport surface 1011, and the second baffle wall portion on the second transport surface 1021. 14 is provided with adjusting means 20 for adjusting the position in the width direction of the third baffle wall portion 15 on the third conveying surface 1031.

  As shown in FIG. 5, the adjusting means 20 includes a long hole 21 penetrating each of the delivery baffle wall portion 12, the first baffle wall portion 13, the second baffle wall portion 14, and the third baffle wall portion 15, and a long hole. And a set screw 22 penetrating through 21. The long hole 21 is formed in the upper surface 12a, 13a, 14a, 15a of each baffle part long in the width direction. In this case, the long holes 21 are arranged at the same position in the width direction in each baffle wall.

  As shown in FIGS. 2, 5, and 7, the trough 7 further includes the aforementioned discharge unit. The discharge unit includes a first discharge unit 31 and a second discharge unit 32. The one-side discharge unit 31 is disposed on one side of the conveyance surface along the first conveyance surface 1011, the second conveyance surface 1021, and the third conveyance surface 1031. The other-side discharge unit 32 is disposed on the other side of the transport surface along the first transport surface 1011, the second transport surface 1021, and the third transport surface 1031.

  The one-side discharge unit 31 and the other-side discharge unit 32 are integrally formed on the side portions of the first transfer region unit 101, the second transfer region unit 102, and the third transfer region unit 103, respectively. The one-side discharge unit 31 is located below the first transfer surface 1011, the second transfer surface 1021, and the third transfer surface 1031, and includes a one-side discharge groove 31 a. The other-side discharge unit 32 is located below the first transfer surface 1011, the second transfer surface 1021, and the third transfer surface 1031 and includes the other-side discharge groove 32a.

  The one-side discharge groove 31a and the other-side discharge groove 32a are respectively along the transfer direction of the first transfer area 101, the second transfer area 102, and the third transfer area 103, and the first transfer area 101, It is provided over the range of the second conveyance area portion 102 and the third conveyance area portion 103. The one-side discharge groove 31a and the other-side discharge groove 32a are inclined downward toward the downstream side.

  One side fall prevention wall 310 is arranged along the longitudinal direction of one side discharge part 31 on one side of one side discharge part 31, and the other side fall prevention wall 320 is arranged on the other side of other side discharge part 32. However, it is arranged along the longitudinal direction of the other side discharge part 32.

  The fourth transport surface 1041 that is the upper surface of the fourth transport region 104 is provided with guide walls 1042 and 1043 that are inclined downward only on the downstream side and are perpendicular to the fourth transport surface 1041 on both sides in the width direction. ing. The downstream end of the fourth transfer area 104 is a falling part of the workpiece W.

  1 to 4, symbol B1 represents a ball receiving box for a solder ball, and this ball receiving box B1 has a solder ball falling from the downstream end of one side discharge groove 31a and the other side discharge groove 32a. It is something to house. Reference sign B <b> 2 is a work receiving box for the work W, and this work receiving box B <b> 2 accommodates the work W that falls from the downstream side end of the fourth transfer region portion 104.

  In the vibration feeder 1 having the above-described configuration, an appropriate amount of workpiece W is put into the hopper 6 and dropped onto the bowl portion 4 of the bowl feeder 2. In the case of this embodiment, the workpiece W is, for example, an IC chip, and is formed in a substantially rectangular parallelepiped shape. In this case, when the workpiece W is plated to form an electrode, a dummy ball made of a single sphere is mixed as an electrical binder, and the dummy ball is necessary for forming the electrode on the workpiece W. Therefore, it is not necessary once the electrode is formed. The dummy ball is not limited to a single dummy ball composed of a single sphere, but a plurality of, for example, two, for example, combined dummy balls formed by connecting two spheres in a straight line. Accordingly, the conveyed objects (work W, solder balls: single dummy ball W11 and combined dummy ball W12) thrown into the hopper 6 both fall into the bowl portion 4 of the bowl feeder 2.

  In any case, the object to be transported that has dropped onto the bowl portion 4 moves to the first transport path 40 due to the vibration of the vibration device 5 of the bowl feeder 2 and is sequentially transported to the downstream side. Then, it is supplied from the supply path 90 of the supply unit 9 to the delivery surface 11 a of the delivery unit 11. The conveyed object supplied to the sending surface 11a is not detached from the sending surface 11a by the vertical wall 110, and movement in the width direction is restricted by the vertical wall 110. On the other hand, in the linear feeder 3, the to-be-conveyed object receives the force conveyed downstream by the trough 7 vibrating horizontally by the drive of the drive part 8. FIG.

  However, the object to be conveyed is restricted in movement in the width direction by the vertical wall 110, the delivery surface 11a is located immediately after the object to be conveyed is supplied from the supply path 90, and the delivery surface 11a has a delivery baffle wall portion. 12 and the baffle wall surface 12b is arranged so as to incline linearly with respect to the conveyance direction, so that the conveyance width of the delivery surface 11a is narrowed on the downstream side. Therefore, the conveyed object supplied from the supply path 90 to the delivery surface 11a tends to stay on the delivery surface 11a temporarily, and the delivery surface 11a is inclined to one side in the width direction. Although the trough 7 is horizontally oscillating while temporarily staying on the delivery surface 11a, the conveyed object receives a force to move to one side in the width direction and a force to move to the downstream side.

  Therefore, the object to be conveyed is sequentially conveyed (moved) from the first passage 16 narrower than the entire conveyance width to the downstream side. Moreover, even if the transported object tends to stay on the delivery surface 11a temporarily, the transported object on the delivery surface 11a is agitated by vibration since the trough 7 vibrates horizontally. Even if the passage 16 is narrower than the entire conveyance width, it is conveyed downstream from the first passage 16 without stagnation.

  As described above, the object to be conveyed is conveyed from the first passage 16 to the downstream side, that is, the first conveying surface 1011, and the first conveying surface 1011 is inclined to the other side in the width direction. The first passage 16 is at the highest position on the first transport surface 1011. And since the 1st conveyance surface 1011 inclines to the width direction other side, the workpiece | work W among the to-be-conveyed objects is slanted to the downstream of the 1st conveyance surface 1011 and the width direction other side by the horizontal vibration of the trough 7. It moves toward the second passage 17 while moving (sliding). Here, the 1st baffle wall part 13 is installed in the downstream of the 1st conveyance surface 1011, and the baffle wall surface 13b inclines with respect to the conveyance direction. For this reason, the object to be conveyed is hardly conveyed directly from the first passage 16 to the second passage 17, and is guided to the baffle wall surface 13b while being in contact with the baffle wall surface 13b to reach the second passage 17 and further downstream. It is conveyed to.

  However, the transferred object includes a solder ball in addition to the workpiece W. As described above, the solder balls include the single dummy ball W11 and the combined dummy ball W12. Here, since the single dummy ball W11 is a simple sphere among the objects to be transported from the first passage 16 to the first transport surface 1011, when the single dummy ball W11 is transported to the first transport surface 1011, the first It easily rolls toward the other side in the width direction of the transport surface 1011, is removed from the first transport surface 1011, falls to the other side discharge portion 32, and falls to the other side discharge groove 32 a. Since the other-side discharge groove 32a is inclined downward toward the downstream side, the single dummy ball W11 moves to the downstream side of the other-side discharge groove 32a, falls into the ball receiving box B1, and is collected.

  By the way, in the case where the combined dummy balls W12 are mixed in the object to be conveyed, the combined dummy balls W12 have the first line when the line passing through the center of the sphere constituting the combined dummy balls W12 is in the posture along the inclination direction of the first transfer surface 1011. The conveyance surface 1011 is difficult to roll. However, the 1st baffle wall part 13 is installed in the downstream of the 1st conveyance surface 1011, and the baffle wall surface 13b inclines with respect to the conveyance direction. That is, the combined dummy ball W12 transported downstream without rolling the first transport surface 1011 in the inclined direction hits the baffle wall surface 13b. Since the baffle wall surface 13b is inclined with respect to the transport direction, when the combined dummy ball W12 hits the baffle wall surface 13b, a line passing through the center of the sphere constituting the combined dummy ball W12 is along the baffle wall surface 13b. Then, the posture of the combined dummy ball W12 is changed (see FIG. 5). Then, the connecting dummy ball W12 that has a posture that follows a line passing through the center of the sphere along the inclination direction of the first transport surface 1011 so that a line passing through the center of the sphere follows the transport direction of the first transport surface 1011. Changed to a proper posture.

  When the combined dummy ball W12 is changed to such a posture, the combined dummy ball W12 rolls on the first transport surface 1011 in the inclined direction and is excluded from the first transport surface 1011 in the same manner as the single dummy ball W11. Then, the other side discharge groove 32a is moved downstream to fall into the ball receiving box B1 and collected.

  Subsequently, the object to be transported (particularly the workpiece W) is transported from the second passage 17 to the highest position on the second transport surface 1021. And since the 2nd conveyance surface 1021 inclines below to the width direction one side, the to-be-conveyed object moves diagonally to the downstream of the 2nd conveyance surface 1021 and the width direction one side by the horizontal vibration of the trough 7 ( It moves toward the third passage 18 while sliding). Here, the 2nd baffle wall part 14 is installed in the downstream of the 2nd conveyance surface 1021, and the baffle wall surface 14b inclines with respect to a conveyance direction. For this reason, the object to be conveyed is not easily conveyed directly from the second passage 17 to the third passage 18, and is guided to the baffle wall surface 14b while being in contact with the baffle wall surface 14b to reach the third passage 18 and further downstream. It is conveyed to.

  Even if a single dummy ball W11 that has not been excluded from the first transfer surface 1011 is mixed in the object to be transferred, the single dummy ball W11 is a simple sphere, so that it is transferred to the second transfer surface 1021. Then, due to the inclination, it easily rolls toward one side in the width direction of the second transport surface 1021 and is excluded from the second transport surface 1021. And it falls to the one side discharge part 31, and falls to the one side discharge groove 31a. Since the one-side discharge groove 31a is inclined downward toward the downstream side, the single dummy ball W11 moves to the downstream side through the one-side discharge groove 31a, falls into the ball receiving box B1, and is collected.

  By the way, when the combined dummy ball W12 that has not been excluded from the first transfer surface 1011 is transferred from the second passage 17 to the second transfer surface 1021, the combined dummy ball W12 has a line passing through the center of the sphere constituting it. If it becomes the attitude | position along the inclination direction of the 2nd conveyance surface 1021, the 2nd conveyance surface 1021 will be hard to roll. However, the second baffle wall portion 14 is installed on the downstream side of the second transport surface 1021, and the baffle wall surface 14b is inclined with respect to the transport direction. That is, the combined dummy ball W12 that has been transported downstream without rolling on the second transport surface 1021 in the inclined direction hits the baffle wall surface 14b, and the baffle wall surface 14b is inclined with respect to the transport direction. The posture of the combined dummy ball W12 is changed so that a line passing through the center of the sphere constituting the ball W12 is along the baffle wall surface 14b. Then, the connecting dummy ball W12 that has a posture in which the line passing through the center of the sphere is along the inclination direction of the second transport surface 1021 is arranged so that the line passing through the center of the sphere is along the transport direction of the second transport surface 1021. Changed to a proper posture.

  When the combined dummy ball W12 is changed to such a posture, the combined dummy ball W12 rolls on the second conveying surface 1021 in the inclined direction and is excluded from the second conveying surface 1021, similarly to the single dummy ball W11. Then, the one-side discharge groove 31a is moved to the downstream side, dropped into the ball receiving box B1, and collected.

  Subsequently, the object to be transported (particularly the workpiece W) is transported from the third passage 18 to the highest position on the third transport surface 1031. And since the 3rd conveyance surface 1031 inclines below to the width direction other side, the to-be-conveyed object is diagonally moving to the downstream of the 3rd conveyance surface 1031 and the other side of the width direction by the horizontal vibration of the trough 7. And move toward the fourth passage 19. Here, the third baffle wall portion 15 is installed on the downstream side of the third transport surface 1031, and the baffle wall surface 15 b is inclined with respect to the transport direction. For this reason, the object to be conveyed is not easily conveyed directly from the third passage 18 to the fourth passage 19, and is guided to the baffle wall surface 15 b while being in contact with the baffle wall surface 15 b to reach the fourth passage 19 and further downstream. To the workpiece receiving box B2.

  Even if a single dummy ball W11 that has not been excluded from the second transfer surface 1021 is mixed in the object to be transferred, the single dummy ball W11 is a simple sphere, so that it is transferred to the third transfer surface 1031. Then, due to the inclination, it easily rolls toward the other side in the width direction of the third transport surface 1031 and is excluded from the third transport surface 1031. And it falls to the other side discharge part 32, and falls to the other side discharge groove 32a. Since the other-side discharge groove 32a is inclined downward toward the downstream side, the single dummy ball W11 moves to the downstream side of the other-side discharge groove 32a, falls into the ball receiving box B1, and is collected.

  By the way, when the combined dummy ball W12 that has not been excluded from the second transfer surface 1021 is transferred from the third passage 18 to the third transfer surface 1031, the combined dummy ball W12 has a line passing through the center of the sphere constituting it. If it becomes the attitude | position in alignment with the inclination direction of the 3rd conveyance surface 1031, the 3rd conveyance surface 1031 will be hard to roll. However, the third baffle wall 15 is provided on the downstream side of the third transport surface 1031, and the baffle wall surface 15 b is inclined with respect to the transport direction. That is, the combined dummy ball W12 that has been transferred to the downstream side without rolling on the third transfer surface 1031 in the inclined direction hits the baffle wall surface 15b, and the baffle wall surface 15b is inclined with respect to the transfer direction. The posture of the combined dummy ball W12 is changed so that a line passing through the center of the sphere constituting the ball W12 extends along the baffle wall surface 15b. Then, the connecting dummy ball W12 that has a posture in which the line passing through the center of the sphere is along the inclination direction of the third transport surface 1031 is arranged so that the line passing through the center of the sphere is along the transport direction of the third transport surface 1031. Changed to a proper posture.

  When the combined dummy ball W12 is changed to such a posture, the combined dummy ball W12 rolls on the third transport surface 1031 in the inclined direction and is excluded from the third transport surface 1031 similarly to the single dummy ball W11. Then, the other side discharge groove 32a is moved downstream to fall into the ball receiving box B1 and collected.

  Further, the first transport surface 1011 is at a position lower than the send surface 11a by the amount of inclination of the send surface 11a in the width direction, and the second transport surface 1021 is the first amount by the amount of inclination of the first transport surface 1011 in the width direction. The third transport surface 1031 is at a position lower than the second transport surface 1021 by the amount of the inclination of the second transport surface 1021 in the width direction, and the fourth transport surface 1041 is the third transport surface. The surface 1031 is positioned lower than the third transport surface 1031 by the amount of inclination in the width direction. In this way, since each downstream conveyance surface is positioned below the upstream conveyance surface, the workpiece W is smoothly conveyed downstream.

  As described above, in the present embodiment, not only the single dummy balls W11 mixed in the transported object but also the combined dummy balls W12 can be excluded from the transport surface during the transport of the transported object. Accordingly, it is possible to eliminate dummy balls that are unnecessary for processing the workpiece W performed in the next process of the workpiece W.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention. The same applies to the specific configuration of each part. In the said embodiment, the conveyance part 10 is comprised from the 1st conveyance area part 101, the 2nd conveyance area part 102, the 3rd conveyance area part 103, and the 4th conveyance area part 104, and an inclination part is a 1st conveyance area part. A case is shown in which the area is composed of three areas 101, the second conveyance area 102, and the third conveyance area 103.

  However, in particular, the inclined portion does not need to be composed of three regions. For example, the inclined portion is composed of the first transport region 101 and the second transport region 102, and the fourth transport region 104 is connected to the second transport region 102. It is also possible to do. The reason why the inclined portion is composed of the three regions is to separate the workpiece W and the dummy ball more reliably, so if the workpiece W and the dummy ball can be reliably separated and selected. It is also possible to connect an area part (fourth conveyance area part 104) whose conveyance surface is not inclined in the width direction downstream of the first conveyance area part 101.

  In the above-described embodiment, each baffle wall portion is formed in a flat triangular prism shape, and is separately attached separately from the sending surface and the transport surface. However, it is an obstacle to change the posture of the dummy ball (joined dummy ball W12) so that the transport width of the delivery surface and the transport surface becomes narrower toward the downstream side, and to remove the inclined transport surface from the transport surface. As long as a wall surface is provided, each baffle wall part is not limited to the shape of the said embodiment. For example, a barrier corresponding to the baffle wall surface of each baffle wall portion may be disposed on the sending surface and the transport surface. Moreover, in the said embodiment, although the baffle wall surface of each baffle wall part is a plane, it is not limited to this, For example, the curved surface curved so that it may become convex in the inclination direction of a conveyance surface may be sufficient.

  In the above-described embodiment, the sending surface 11a, the first transport surface 1011, the second transport surface 1021, and the third transport surface 1031 are all inclined in the width direction. For this reason, the first passage 16, the second passage 17, the third passage 18, and the fourth passage 19 are adjacent to each other in the transport direction, and have a step due to the inclination in the width direction. However, it is not necessary to form each passage by such a step, and in each passage portion, it is possible to make the surfaces adjacent to each other in the transport direction flush with each other.

  Moreover, although the 1st conveyance surface 1011, the 2nd conveyance surface 1021, and the 3rd conveyance surface 1031 were set as the surface inclined in the width direction entirely, respectively, it is not limited to this, A part in width direction is each on each conveyance surface It can also be set as the structure which excludes the solder balls W11 and 12 from a conveyance surface by making it incline and making another part into a horizontal surface.

  Moreover, in the said embodiment, although the 4th conveyance surface 1041 is not inclined in the width direction, you may make the 4th conveyance surface 1041 incline in the width direction (for example, incline in the width direction one side).

  In each of the above embodiments, the inclination angle of the conveyance surface inclined in the width direction is determined by the relationship between the conveyance direction length of the conveyance unit and the number of resonances, etc., so that the workpiece W is not excluded from the conveyance surface during conveyance. Need to be set.

  DESCRIPTION OF SYMBOLS 1 ... Vibration feeder, 3 ... Linear feeder, 7 ... Trough, 9 ... Supply part, 10 ... Conveyance part, 11 ... Sending part, 12, 13, 14, 15 ... Baffle wall part, 12b, 13b, 14b, 15b ... Disturbance Wall surface, 13 ... first baffle wall portion, 14 ... second baffle wall portion, 15 ... third baffle wall portion, 16 ... first passage, 17 ... second passage, 18 ... third passage, 19 ... fourth passage, DESCRIPTION OF SYMBOLS 31 ... One side discharge part, 32 ... Other side discharge part, 90 ... Supply path, 101 ... First conveyance area part, 102 ... Second conveyance area part, 103 ... Third conveyance area part, 104 ... Fourth conveyance area part DESCRIPTION OF SYMBOLS 1011 ... 1st conveyance surface, 1021 ... 2nd conveyance surface, 1031 ... 3rd conveyance surface, 1041 ... 4th conveyance surface, W ... Workpiece, W11 ... Single-piece dummy ball, W12 ... Combined dummy ball

Claims (4)

A conveyance section having a conveyance surface for conveying the object to be conveyed is provided, and the object to be conveyed, in which dummy balls are mixed in a substantially rectangular parallelepiped workpiece, is sorted into the workpiece and the dummy ball. A vibration feeder,
An inclined portion having an inclined surface formed on at least a part of the conveying surface and inclined to the side with respect to the conveying direction;
A baffle wall portion that is provided on the inclined surface and narrows the conveyance width toward the downstream side and the lower side to form a work path; and
A discharge portion that is below the inclined surface and excludes the dummy ball from the conveying surface;
A vibration feeder characterized by comprising:   The vibration feeder according to claim 1, wherein a delivery unit that sends the object to be conveyed to a side having a height higher than the center of the conveyance width on the inclined surface is disposed on the most upstream side of the conveyance unit.   A plurality of the inclined portions are provided side by side in the transport direction, and an inclined surface of the upstream inclined portion and an inclined surface of the downstream inclined portion arranged in the upstream inclined portion are inclined in directions opposite to each other, and the upstream The vibration feeder according to claim 1 or 2, wherein the inclined portion on the side and the inclined portion on the downstream side of the inclined portion on the upstream side are continuous through a passage. The height of a continuous portion of the downstream inclined portion that is continuous with the passage of the upstream inclined portion substantially matches the height of the passage of the upstream inclined portion. 3. The vibration feeder according to 3.

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