JP2008254884A - Alignment carrier device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an alignment carrier device capable of changing its direction by 180 degrees. <P>SOLUTION: This alignment carrier device includes: a carrier drum 11 having a function to substantially horizontally rotate around a rotation axis 13 as its center; a selection guide 25 positioned on an upper part by facing the carrier drum 11 and having a function to guide an object to be carried on the carrier drum 11 in a constant direction; a reversing selection guide 26 positioned on the upper part by facing the carrier drum 11, to guide the object to be carried on the carrier drum 11 in the constant direction, to erect a part of the object to be carried in a direction to gradually separate it from a surface of the carrier drum 11 in accordance with rotation of the carrier drum 11 by making it contact with a part of the object to be carried and having a means to reverse the erected object to be carried by 180 degrees from a posture of the object to be carried immediately before contact; and a peripheral guide 23 positioned on the upper part by facing the carrier drum 11 on a peripheral part of the carrier drum 11 and having a surface and back selection mechanism having a means to determine whether the object to be carried comes to be different from the desired surface and back direction or not and to move the object to be carried in a direction to approach the rotation axis 13 when it is different. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an aligning and conveying apparatus that aligns and conveys an object to be conveyed such as a semiconductor product.

  2. Description of the Related Art Conventionally, a method using vibration has been frequently used in a component supply device or an alignment conveyance device related to semiconductors and electronics. For example, the semiconductor device is caused to self-run by vibration and the direction alignment and transport are performed using a guide for determining the direction. Self-running due to vibration causes collision between semiconductor devices, contact and collision between the semiconductor device and the transfer surface, guides, etc., and damages such as scratches, dirt, and bending of the outer leads that are external electrodes of the semiconductor device. There are many.

  Therefore, a component supply device that does not use vibration has been considered. For example, it is equipped with a medium-high plate-shaped component container that is attached to a vertical rotation shaft provided on the base and rotated in one direction, and a transfer path is formed on the flange surface provided on the outer peripheral wall of the component container. A component that is attached to the support portion of the base along the inner surface of the outer peripheral wall of the component container, and that is provided with a guide trough that is inclined from the bottom surface of the outer periphery of the component container to the upper surface of the transfer path. The parts are pushed up sequentially from the induction trough to the transfer path by the pressing force of the parts container, and the parts pushed up on the transfer path are moved along the transfer path by the rotation of the transfer path and the mutual pressing force of the parts. There is disclosed a component-vibrating device that is arranged so as to be moved to an unloading trough that unloads components from a transfer path and unloads a trough (see, for example, Patent Document 1).

However, in the proposed component supply apparatus, since vibration is not used, damage to the object to be conveyed can be reduced, but in the object to be conveyed having a specific shape, by pushing up and dropping, Although the direction change of about 90 degrees can be performed effectively, a semiconductor device or the like that needs to change the direction of 180 degrees has a problem that it is difficult to change to a desired posture.
JP 2000-238912 A (2nd and 3rd pages, FIG. 1)

  The present invention provides an aligning and conveying apparatus capable of changing the direction of an object to be conveyed by 180 degrees.

  An alignment conveyance device according to one aspect of the present invention has a substantially horizontal upper surface, a conveyance drum that rotates about a substantially vertical rotation axis, and a rotation drum that faces the upper surface of the conveyance drum and rotates. The first starting end that first overlaps the radius is at a certain distance from the rotation axis, and the first end that overlaps the radius of the transport drum at the end is at a certain distance from the rotation axis, and the first starting end Between the first end portion and the plate-shaped first guide having a vertical or nearly vertical first side surface having a smoothly changing curvature and the upper surface of the transport drum A second starting end that first overlaps the radius of the transport drum is at a constant distance from the rotation axis, and a second end that overlaps the radius of the transport drum at the end is at a constant distance from the rotation shaft; The second starting end and the second end The second start end portion has a vertical or nearly vertical second side surface with a smoothly changing curvature and the second side surface close to the bottom surface on the transport drum side. Alternatively, a protrusion whose distance from the upper surface of the transport drum changes with a constant inclination between the side near the second start end and the second end or the side close to the second end, and A plate-like second guide having a first gas outlet on the bottom surface in the vicinity of the projecting portion, and a third portion that is vertical or nearly vertical, facing the top surface of the transport drum at the periphery of the transport drum. An optical sensor system that focuses on a certain position on the upper part of the transport drum adjacent to the third side surface, and a gas sensor that is close to the bottom surface on the transport drum side and that is instructed by the optical sensor system. The second gas provided on the third side surface Characterized in that it comprises a third guide having an outlet.

  In another aspect of the present invention, an alignment transport apparatus includes a transport drum having a function of rotating substantially horizontally around a rotation axis, and an upper portion facing the transport drum, the transport target on the transport drum. A first guide having a function of guiding an object in a certain direction; and an upper part facing the conveying drum; guiding the object to be conveyed on the conveying drum in a certain direction and contacting a part of the object to be conveyed; Then, according to the rotation of the transport drum, a part of the transported object is raised in a direction gradually separating from the surface of the transport drum, and the raised transported object is moved to a posture of the transported object immediately before contact. A second guide having means for reversing 180 degrees from the second guide, and the upper part facing the transport drum at the periphery of the transport drum and determining whether or not the object to be transported is different from the desired front and back direction. In case Characterized in that a and a third guide having a front and back selecting mechanism having a means for moving in a direction approaching the rotating shaft Okubutsu.

  ADVANTAGE OF THE INVENTION According to this invention, the alignment conveyance apparatus which can change the direction of a to-be-conveyed object 180 degree | times can be provided.

  Embodiments of the present invention will be described below with reference to the drawings. In the figure shown below, the same code | symbol is attached | subjected to the same component.

  An alignment transport apparatus according to an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a diagram schematically showing the configuration of the alignment transport device, FIG. 1 (a) is a plan view with a part cut away, and FIG. 1 (b) is along the line AA in FIG. 1 (a). FIG. FIG. 2 is a diagram schematically showing components of the aligning and conveying apparatus. FIGS. 2A and 2B are diagrams viewed from the right front (B direction in FIG. 1A). c) and FIG. 2 (d) are cross-sectional views of FIG. 2 (a) and FIG. 2 (b). FIG. 3 is a cross-sectional view taken along the line CC of FIG. 1A schematically showing components of the aligning and conveying apparatus. FIG. 4 is a diagram schematically illustrating a transport locus of an object to be transported in the alignment transport device. FIG. 5 is a diagram schematically showing the components for changing the direction of the conveyed object and the direction change. FIG. 6 is a diagram schematically showing the components for changing the direction of the conveyed object and the direction change. FIG. 7 is a diagram schematically showing components for detecting the front and back direction of the object to be conveyed and means for moving the object to be conveyed.

  As shown in FIG. 1, the aligning and conveying apparatus 1 has a substantially horizontal upper surface, and faces the upper surface of the conveying drum 11 and a conveying drum 11 that rotates substantially horizontally around a substantially vertical rotation shaft 13. A sorting guide 25 that is a plate-like first guide having a substantially flat bottom surface and a curved surface that is the first side surface on the side far from the rotation shaft 13, and a curved surface that is the second side surface is the rotational axis. The reversing and sorting guide 26 is a plate-like second guide having a plate-like shape on the side far from 13, and the outer peripheral portion of the transport drum 11 having a curved surface and a plane that are third side surfaces on the side close to the rotary shaft 13. And an outer peripheral guide 23 which is a third guide. The sorting guide 25, the reverse sorting guide 26, and the outer circumferential guide 23 maintain a fixed positional relationship via the top plate 21 on the side opposite to the transport drum 11.

  As shown in FIG. 1B, the aligning and conveying apparatus 1 includes a casing 15 and a driving mechanism 17 below the conveying drum 11. The casing 15 has a bottomed square shape having a cylindrical gap in which the transport drum 11 can be stored, is below the top plate 21, and is fixed to the bottom surface of the outer peripheral guide 23. The transport drum 11 is rotatably accommodated at a position slightly lower than the upper surface of the casing 15 or the bottom surface of the outer peripheral guide 23, that is, with a gap that does not sandwich the objects to be transported in an aligned manner.

  The drive mechanism 17 is disposed at the center outside the bottom of the casing 15 and is coupled so that the drive mechanism 17 and the rotation shaft 13 of the transport drum 11 coincide. The drive mechanism 17 is not necessarily disposed below the rotation shaft 13 of the transport drum 11 as long as the rotational drive can be transmitted to the transport drum 11.

  The transport drum 11 has a disk shape. The outer peripheral portion of the transport drum 11 is outside the side surface on the inner side of the outer peripheral guide 23 except for the vicinity of the unloading port 45 for unloading the transported object in plan view. The transport drum 11 is made of, for example, stainless steel, resin, or the like.

  The sorting guide 25 has an upper surface fixed to the top plate 21 and a bottom surface facing the upper surface of the transport drum 11. Note that the sorting guide 25 may be formed integrally with the top plate 21. The side surface of the sorting guide 25 is configured by a substantially vertical curved surface or plane. The part where the bottom and the side meet is chamfered.

  During operation, the transport drum 11 rotates along the rotational direction 14, and the position of the sorting guide 25 where the radius of the transport drum 11 first encounters (overlap in plan view) is the start end, and the last of the sorting guide 25 that meets last. The position is called the end portion. Of the side surfaces of the sorting guide 25, the curved surface is a surface having a curvature centered on a position slightly shifted from the rotation shaft 13, the curved surface on the start end side is close to the rotation shaft 13, and the curved surface on the end portion side is It is in a position far from the rotation axis 13. The length from the start end portion to the end end portion of the sorting guide 25 is, for example, about 90 degrees or less when expressed as an angle around the rotation axis 13. Note that the length from the start end portion to the end end portion of the sorting guide 25 can be appropriately changed depending on the distance from the rotation shaft 13, the rotation speed of the transfer drum 11, the size and shape of the transfer object, and the like.

  The side surfaces forming the curved surface of the sorting guide 25 are arranged in parallel on the side close to the rotation shaft 13 (hereinafter referred to as “inside”) and the side far from the side (hereinafter referred to as “outside”), forming a plate shape having a substantially constant width. ing. The starting end of the inner side surface of the sorting guide 25 forms a plane, and this plane is connected to the inner curved surface at a large angle close to 180 degrees, and the outer curved surface has a wedge shape, that is, for example, It is connected at an angle of about 15 to 40 degrees. The terminal portion of the sorting guide 25 is connected to the inner and outer curved surfaces at an angle close to 90 degrees.

  The sorting guide 25a, which forms part of the sorting guide 25, has a curved end surface on the inner side, and is connected to the outer curved surface in a wedge shape or a beak shape. The inner side surface is close to the rotating shaft 13 and forms a curved surface along an arc centered on the rotating shaft 13, and the outer side surface forms a curved surface that rapidly moves away from the rotating shaft 13. The sorting guide 25a is disposed, for example, to arrange the loaded objects to be conveyed on the upper surface of the conveying drum 11 in a line.

  In addition, the sorting guide 25 b that forms a part of the sorting guide 25 has a shape and an arrangement in which the start end is far from the rotation shaft 13 and the end is near the rotation shaft 13. The sorting guide 25b has a curved end surface on the inner side surface, and is connected to the outer curved surface when the starting end portion is connected in a wedge shape or a beak shape and in a hemispherical shape. There may be. The sorting guide 25b is arranged, for example, to bring the object to be conveyed inward.

  As described above, six sorting guides 25a and 25b and sorting guides 25 to which special roles are added are arranged. The number and position can be changed according to the size, shape, rotational speed, and the like of the objects to be transported, and a sorting guide having a derivative shape other than the sorting guides 25a and 25b is used. Is possible.

  The reverse sorting guide 26 has a shape similar to the sorting guide 25 in plan view. That is, the start end portion of the reversing sorting guide 26 is close to the rotating shaft 13, and the end portion of the reversing sorting guide 26 is located far from the rotating shaft 13. Further, the length from the start end portion to the end end portion of the reversing sorting guide 26 has an angle of about 90 degrees around the rotation shaft 13. Similar to the sorting guide 25, the length of the reverse sorting guide 26 can be changed as appropriate depending on the distance from the rotary shaft 13, the rotational speed of the transport drum 11, the size and shape of the transported object, and the like.

  The starting end portion of the reverse selection guide 26 has a wedge shape. The top surface of the reverse selection guide 26 is fixed to the top plate 21, and the bottom surface faces the top surface of the transport drum 11. For example, one reverse selection guide 26 is arranged, but can be increased as appropriate.

  Similar to the sorting guide 25, the side surface of the reversing sorting guide 26 is configured by a substantially vertical curved surface or plane, and the two curved surfaces are arranged in parallel and have a plate shape with a substantially constant width. As shown in FIG. 2, a lead guide 27 serving as a protrusion is formed on the outer curved surface in the vicinity of the bottom surface. As shown in FIG. 2B, the bottom of the reversing sorting guide 26 is close to the upper surface of the transport drum 11 at the start end, and as shown in FIG. 2A, the upper surface of the transport drum 11 at the end portion. And the distance is set far. The angle that the lead guide 27 makes with the horizontal plane can be selected from 1 to 3 degrees, for example. However, it is preferable to select more appropriately based on the shape, size, rotational speed, and the like of the conveyed object. The distance between the bottom surface and the top surface of the transport drum 11 has a constant slope between the starting end portion and the terminal end portion of the reverse selection guide 26. A portion where the bottom surface and the side surface or the lead guide 27 intersect is chamfered.

  As shown in FIG. 2 (a), an air supply hole 43 is opened in a substantially vertical direction near the terminal portion of the reversing sorting guide 26, and the air supply hole 43 a is connected to the bottom surface side of the air supply hole 43. Yes. 2C, the air supply hole 43a is the bottom of the air supply hole 43 in the cross section along the plane defined by the center line of the air supply hole 43 and the rotary shaft 13 in FIG. The lead guide 27 is formed on the bottom side so as to extend obliquely, and an opening serving as a first gas outlet is provided on the bottom surface. Although not shown, the air supply hole 43 passes through the top plate 21 and is connected to an external air supply system. Note that nitrogen, other inert gases, or the like can be used as the gas to be blown out.

  As shown in FIG. 1 (a), the carry-out guide 28 has a substantially flat side surface on the outside, and has a side surface that forms a curved surface along the arc in a vertical or nearly vertical state. Yes. The carry-out guide 28 constitutes a part of the carry-out port 45 for conveying the object to be conveyed to the outside of the conveyance drum 11 on the outer plane, and constitutes a guide for rotating it circularly on the inner curved surface. . The carry-out guide 28 is formed across the outer periphery of the transport drum 11. The carry-out guide 28 is chamfered at a portion where the bottom surface and the inner side surface or the outer side surface intersect.

  The outer peripheral guide 23 has a peripheral bottom surface fixed to the casing 15 and an upper surface fixed to the top plate 21. The inner bottom surface faces the top surface of the transport drum 11. The inner side surface of the outer peripheral guide 23 is vertical or close to the vertical, and generally faces the rotary shaft 13 or the vicinity of the rotary shaft 13, but in cooperation with the sorting guide 25 and the reverse sorting guide 26, In order to promote the alignment and reversal of the objects, a portion protruding in the direction of the rotating shaft 13 is provided. The inner side surface of the outer periphery guide 23 is located on the inner side of the outer periphery of the transport drum 11 except for the side surface that constitutes the carry-out port 45 for transporting the object to be transported outside. A side surface composed of a plane constituting the carry-out port 45 of the outer periphery guide 23 faces a plane outside the carry-out guide 28 to form a passage for carrying the object to be carried. The portion where the bottom surface of the outer peripheral guide 23 and the inner side surface intersect is chamfered.

  The outer peripheral guide 23 penetrates the top plate 21 on the inner side from the inner side surface, and the optical sensor system 31 is provided in a direction substantially along the rotation axis 13. Air supply holes 43 having an opening which is a second gas outlet serving as a means are provided in pairs. The optical sensor system 31 is not necessarily in contact with the outer periphery guide 23.

  As shown in FIG. 3, the air supply hole 43 is formed perpendicular to the upper surface of the outer peripheral guide 23 and is connected to the air supply system 44. The air supply hole 43 has an air supply hole 43a that faces the direction of the rotary shaft 13 substantially horizontally on the bottom surface side of the outer peripheral guide 23, and an air outlet is opened on the inner side surface. Although not shown in the drawings, the optical sensor system 31 detects the posture of the conveyed object in contact with or close to the inner side surface, processes the detection data, and does not match the desired posture Then, an operation signal is sent to the air supply system 44, air is supplied from the air supply system 44, and air is blown out from the outlet of the air supply hole 43a. Note that nitrogen, other inert gases, or the like can be used as the gas to be blown out.

  The outer peripheral guide 23 is provided with three pairs of optical sensor systems 31 and air supply holes 43 and 43a. Two of these are installed before and after the rotation direction of the carry-out port 45 serving as an inlet on the transport drum 11. The other one is at a position that is approximately 180 degrees away from the carry-out port 45. The optical sensor system 31 and the air supply holes 43 and 43a are not limited to three locations, and can be increased or decreased depending on the degree of reliability of the alignment of the objects to be conveyed. Further, the positions of the paired optical sensor system 31 and the air supply holes 43 and 43a can be determined as appropriate depending on the positional relationship between the sorting guide 25 and the reverse sorting guide 26. Further, the positional relationship between the optical sensor system 31 and the air supply holes 43 and 43a can be changed as appropriate according to the size and shape of the objects to be conveyed that are aligned and conveyed, the rotational speed, and the like.

  The optical sensor system 31 can be used for detecting the remaining amount of the object to be conveyed on the conveying drum 11. When the remaining amount is detected, the setting is different from that when the form of the conveyed object is detected, for example, the detection range of the optical sensor system 31 is widened, the focal position is placed near the center of the conveyed object, and the air supply unit 44 The remaining amount detection result is sent to a control system (not shown) of the hopper that supplies the conveyed object.

  As shown in FIG. 1A, the outer periphery guide 23 forms a conveyance path by notching one corner of a rectangle connected to the outlet of the carry-out port 45.

  As shown in FIG. 1 (b), the top plate 21 has a loading port 41 (shown by a broken line) for supplying a transported object in the vicinity of the rotating shaft 13. The input port 41 introduces an object to be transferred, which is input via an external hopper (not shown), onto the transfer drum 11.

  Next, the operation of the aligning and conveying apparatus 1, that is, the operation of aligning the objects to be conveyed will be described.

  As shown in FIG. 4, after an object to be transported such as a semiconductor device is inserted into the insertion port 41, the rotation shaft 13 is schematically moved on the transport drum 11 by, for example, rotating clockwise. Advancing along the traveling directions C1 to C9 forming an arc of a concentric circle at the center and mainly along the outer side surfaces of the sorting guide 25, the reverse sorting guide 26, and the outer circumferential guide 23, and a desired alignment is made. It is carried out from the carry-out port 45. As initially set, the transport drum 11 rotates at a constant speed in a certain direction, for example, clockwise.

  One of several objects to be transported that has been input to the input port 41 proceeds in the traveling direction C1. The conveyed object contacts the sorting guide 25a, proceeds away from the rotating shaft 13 along the outer side surface, and proceeds in the traveling direction C2 from the terminal portion. The conveyed object comes into contact with the inner side surface at a position close to the terminal end of the sorting guide 25a, approaches the rotating shaft 13, and advances in the traveling direction C3 from the terminal end. The transported object hits the start end of the sorting guide 25, for example, changes its direction by contacting the outer side surface, is moved away from the rotating shaft 13, and advances in the traveling direction C <b> 4 from the terminal end.

  Further, the conveyed object passes through a position approaching the sorting guide 25b, hits the start end portion of the sorting guide 25, contacts the outer side surface, is moved away from the rotating shaft 13, and advances in the traveling direction C5 from the end portion. . The conveyed object hits the end portion of the outer peripheral guide 23, contacts the inner side surface, and advances in the traveling direction C <b> 6 from the end portion with almost no change in the distance from the rotating shaft 13. The transported object hits the start end of the reversing sorting guide 26, contacts the outer side surface, and is turned away from the rotating shaft 13. For example, the transported object is reversed so that the upper surface of the transported object is up, From the part, proceed in the traveling direction C7.

  In addition, the conveyed object hits the end of the outer peripheral guide 23, contacts the inner side surface, proceeds with almost no change in the distance from the rotation shaft 13, passes the front / back determination of the optical sensor system 31, Then, proceed in the traveling direction C8. Thereafter, the conveyed object hits the start end of the sorting guide 25, contacts the outer side surface, is moved away from the rotary shaft 13, proceeds from the terminal end in the traveling direction C9, hits the end of the outer peripheral guide 23, It touches the inner side surface, proceeds with almost no change in the distance to the rotating shaft 13, passes the front / back determination of the optical sensor system 31 twice, and is carried out from the carry-out port 45.

  For example, when the position of the center of gravity is on the inner side or when two objects are positioned on the inner side in parallel, the object to be conveyed is moved toward the inner side at the start end of the sorting guide 25 and travel direction C10. In this case, another round is performed, and the sorting by the center of gravity position or the like is performed again at the starting end portion of the sorting guide 25. The transported object is subjected to the same sorting by the sorting guide 25, the reverse sorting guide 26, and the like at other positions.

  Next, an operation of changing the direction of moving forward and backward by contacting the outer side surface will be described.

  As shown in FIG. 5, the object to be conveyed shown in a plan view is, for example, a semiconductor device 51 in which three gull-wing type outer leads 55 are taken out from the mold resin. The sorting guide 25 can align the direction of the semiconductor device 51. The sorting guide 25 gradually moves away from the rotating shaft 13 as the rotation proceeds with respect to the arc centered on the rotating shaft 13 indicated by the dotted line. The semiconductor device 51 along the outer side surface of the sorting guide 25 increases the peripheral speed while increasing the rotation radius, and the semiconductor device 51 changes its direction so as to secure a more stable position. The stable position of the semiconductor device 51 is determined by acceleration, the position of the center of gravity 53, the contact resistance between the transport drum 11 and the semiconductor device 51, the contact resistance between the sorting guide 25 and the semiconductor device 51, and the like. As a result, in the semiconductor device 51, for example, the long side direction is aligned in a direction along the outer side surface.

  As shown in FIG. 6, the reverse selection guide 26 can reverse the semiconductor device 51 whose front and back (up and down) are reversed. According to the rotation of the transport drum 11, the time changes in the order of FIG. 6C → (b) → (a). A side view-like semiconductor device 51 is shown in the cross-sectional reversal selection guide 26 described above. As shown in FIG. 6C, at the starting end portion of the reversing selection guide 26, the bent portion 56 on the side close to the back surface of the outer lead 55 of the semiconductor device 51 that is reversed upside down is above the lead guide 27. As the semiconductor device 51 is transported on the transport drum 11, the bent portion 56 approaches the lead guide 27, and eventually the bent portion 56 is partially parted by the lead guide 27 as shown in FIG. Is lifted. Then, the semiconductor device 51 gradually takes an attitude, and as shown in FIG. 6 (a), reaches an almost upright attitude at the end of the reversing sorting guide 26, via the air supply holes 43 and 43a. The posture is further raised by the constantly blown air, and the front and back are reversed. That is, for example, the semiconductor device 51 in a desired state with the front side up is obtained. The reversing sorting guide 26 is determined in terms of the size of the lead guide 27, the angle with the horizontal plane, and the like based on the size and shape of the semiconductor device 51, the rotational speed of the transport drum 11, and the like.

  As shown in FIG. 7, the front / back sorting mechanism including the paired optical sensor system 31 and the air supply system 44 having the air supply holes 43 and 43a determines whether the semiconductor device 51 is in a desired shape. Determine and sort. A side view-like semiconductor device 51 is shown in the above-mentioned sectional view-like outer peripheral guide 23 and the like. At the tip of the optical sensor system 31 facing the upper surface of the transport drum 11, a lens and a diaphragm are disposed so as to have a shallow depth of focus, and the focus is on the focusing unit 33. The focusing unit 33 is set so as to be aligned with the highest surface of the outer lead 55 of the semiconductor device 51 with the back surface placed on top. The semiconductor device 51 is arranged so that the longitudinal direction is substantially parallel to the inner side surface of the outer circumferential guide 23 at the stage before reaching the front and back sorting mechanism. As shown in FIG. 7A, when the semiconductor device 51 has a desired posture with the surface facing up, for example, the optical sensor system 31 detects an image of the outer lead 55 that is out of focus and spreads out of focus. To do. On the other hand, as shown in FIG. 7B, when the semiconductor device 51 is not in a desired arrangement but in an arrangement with the back side up, the photosensor system 31 detects an image of the outer lead 55 with the apex aligned. The attitude of the semiconductor device 51 is determined by comparing the detected image width of the outer lead 55 with a determination criterion. When the semiconductor device 51 is not in a desired posture, a signal is sent to the air supply unit 44 to realign the semiconductor device 51, and air is blown out from the air supply holes 43 and 43a. The drum 11 is returned in the direction of the rotation shaft 13.

  As described above, the aligning and conveying apparatus 1 has a substantially horizontal upper surface, the conveying drum 11 that rotates substantially horizontally around the substantially vertical rotating shaft 13, and the side surface formed of a curved surface is far from the rotating shaft 13. A sorting guide 25 having a function of changing the direction of the object to be conveyed, a reversing sorting guide 26 having a side surface made of a curved surface on the side far from the rotary shaft 13 and having a function of reversing the front and back of the object to be conveyed, and a curved surface And an outer peripheral guide 23 provided on the outer peripheral portion of the transport drum 11 having a plane side surface close to the rotary shaft 13 and having a front / back sorting mechanism for the object to be transported. The aligning and conveying apparatus 1 further includes a sorting guide 25 having a substantially flat bottom surface facing the upper surface of the conveying drum 11, a reversing sorting guide 26, and an outer peripheral guide 23, and a top plate on the opposite side to the conveying drum 11. 21 is fixed.

  As a result, the aligning and conveying apparatus 1 converts the traveling direction into a desired posture while placing the semiconductor device 51 as the conveyed object on the conveying drum 11 and moving it in the outer peripheral direction, and converts the front and back into the desired posture. In addition, after confirming the traveling direction and the front and back postures, it can be carried out. In particular, the 180-degree reversal in the front-back direction can be more reliably realized.

  In addition, since the aligning and conveying apparatus 1 is conveyed by the rotation of the conveying drum 11, the sorting guide 25, the reverse sorting guide 26, and the like have shapes and arrangements that are reasonable for the rotation, that is, the rotation of the conveying drum 11. However, since the shape intersects with the rotation circumference at a relatively large angle close to 180 degrees in a plan view, noise generation during operation is small and the operation is quiet. That is, in the aligning and conveying apparatus 1, in addition to the rotation sound of the conveying drum 11, the contact sound between the objects to be conveyed, the contact sound of the object to be conveyed with the conveying drum 11, the object sorting guide 25, the reverse sorting guide 26, And, since the collision and contact sound at a relatively large angle with respect to the outer periphery guide 23 and the like, the air blowing sound, etc. are the main ones, it is quiet.

  Further, the alignment transport device 1 is less likely to damage or contaminate the outer leads 55 of the semiconductor device 51, and the reliability of the aligned semiconductor devices 51 is hardly reduced. For example, in an apparatus that conveys an object to be conveyed using vibration, collisions between objects to which energy is individually applied, collisions to the side of a guide of the object to be conveyed, etc. occur. May be damaged or soiled, resulting in a decrease in yield or a decrease in reliability in subsequent mounting or the like.

  In the aligning and conveying apparatus 1, the sorting guide 25, the reverse sorting guide 26, and the outer peripheral guide 23 are fixed to the top plate 21. By preparing the top plate 21 to which the sorting guide 25, the reversing sorting guide 26, the outer periphery guide 23, and the like that match the size and shape of the object to be conveyed are prepared in advance, the aligning and conveying apparatus 1 can quickly , And can be modified to suit various transported objects. In addition, since the transport drum 11 is in charge of transport, the sorting guide 25 fixed to the top plate 21, the reverse sorting guide 26, and the outer periphery guide 23 are in charge of alignment. Since the function can be demonstrated only by adjusting the interval, the adjustment is easy. Therefore, the aligning and conveying apparatus 1 can reduce the switching time and adjustment time of the sorting guide 25, the reversing sorting guide 26, the outer periphery guide 23, and the like when switching the object to be conveyed, and the cost can be suppressed. It is.

  Further, the aligning and conveying apparatus 1 has a structure in which the sorting guide 25 and the reverse sorting guide 26 are fixed to the top plate 21. That is, when it is not necessary to replace the outer periphery guide 23, the top plate 21 to which the selection guide 25 and the reverse selection guide 26 that match the size and shape of the object to be conveyed are fixed in advance is produced. Thus, it is possible to quickly obtain the alignment transport device 1 suitable for the object to be transported. In addition, the above-described effects are similarly obtained.

  As mentioned above, this invention is not limited to the said Example, In the range which does not deviate from the summary of this invention, it can change and implement variously.

  For example, in the present embodiment, an example in which the start end portion of the reversing sorting guide is close to the rotation axis and the end portion of the reversing sorting guide is located at a position far from the rotating shaft, the start end portion of the reversing sorting guide is rotated. The terminal portion of the reversing sorting guide that is far from the axis may be at a position close to the rotation axis. In this case, since the inner side surface of the reverse selection guide serves as a guide, the lead guide that is the protruding portion needs to be disposed on the inner side surface.

The present invention can be configured as described in the following supplementary notes.
(Supplementary Note 1) A transport drum that has a substantially horizontal upper surface and rotates about a substantially vertical rotation axis, and a first surface that faces the upper surface of the transport drum and first overlaps the radius of the rotating transport drum. The first end portion of the first end portion is at a constant distance from the rotation shaft, the first end portion that overlaps with the radius of the transport drum last is at a constant distance from the rotation shaft, and the first start end portion and the first end portion are A plate-shaped first guide having a vertical or nearly vertical first side surface having a smoothly changing curvature, and a radius of the transport drum rotating to face the upper surface of the transport drum. The second starting end portion that overlaps first is at a certain distance from the rotation shaft, and the second terminal end portion that overlaps with the radius of the transport drum at the end is at a certain distance from the rotation shaft, and the second starting end portion Smoothly between the second end It has a vertical or near-vertical second side surface having a changing curvature, and the second side surface close to the bottom surface on the transport drum side has the second start end portion or the second start end portion. Between the near end and the second end portion or the side close to the second end portion, the distance from the upper surface of the transport drum changes in a constant inclination, and close to the protrusion and the protrusion A plate-like second guide having a first gas outlet on the bottom surface, and a third side surface that is vertical or nearly vertical, facing the top surface of the conveyance drum at the periphery of the conveyance drum; An optical sensor system that focuses on a certain position on the upper part of the transport drum adjacent to the side surface of the third side, and the third side surface that is close to the bottom surface on the transport drum side and blows out gas in accordance with an instruction of the optical sensor system The third gas having the second gas outlet provided in the Aligning feeder and a de.

(Additional remark 2) The alignment conveyance apparatus of Additional remark 1 with which the said 1st start end part of the said 1st guide is formed in the wedge shape.

(Additional remark 3) The alignment conveyance apparatus of Additional remark 1 with which the said 2nd start end part of the said 2nd guide is formed in the wedge shape.

(Additional remark 4) The said 3rd guide is an alignment conveyance apparatus of Additional remark 1 which has a said 3rd side surface in the side near the said rotating shaft.

(Additional remark 5) The alignment conveyance apparatus of Additional remark 1 with which the said 1st and 2nd guide is provided in the same board | substrate among the said 1st thru | or 3rd guides.

(Additional remark 6) The said board | substrate has an opening in the position facing the said conveyance drum, The alignment conveyance apparatus of Additional remark 5 characterized by the above-mentioned.

(Additional remark 7) The said board | substrate is an alignment conveying apparatus of Additional remark 5 which has the 4th guide 28 which has a side surface crossing the outer periphery of the said conveyance drum.

(Additional remark 8) The said optical sensor system is the alignment conveyance apparatus of Additional remark 1 which has an image taking-in means, the collation means with the said captured image and a reference | standard image, and the transmission means of the signal based on the said collation result.

(Additional remark 9) The said 1st gas blower outlet is the alignment conveyance apparatus of Additional remark 1 which is blowing fixed gas for a fixed period.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows typically the structure of the alignment conveyance apparatus which concerns on the Example of this invention, FIG.1 (a) is a top view shown notched in part, FIG.1 (b) is A- of FIG.1 (a). Sectional drawing along A line. FIGS. 2A and 2B are diagrams schematically showing components of the alignment transport device according to the embodiment of the present invention, as viewed from diagonally right front (B direction in FIG. 1A). 2 (c) and 2 (d) are cross-sectional views of FIGS. 2 (a) and 2 (b). Sectional drawing along CC line of Fig.1 (a) which shows typically the component of the alignment conveyance apparatus which concerns on the Example of this invention. The figure which shows typically the conveyance locus | trajectory of a to-be-conveyed object in the alignment conveyance apparatus which concerns on the Example of this invention. The figure which shows typically the component and direction change which perform the direction change of a to-be-conveyed object in the alignment conveyance apparatus which concerns on the Example of this invention. The figure which shows typically the component and direction change which perform the direction change of a to-be-conveyed object in the alignment conveyance apparatus which concerns on the Example of this invention. The figure which shows typically the component to detect the front and back direction of a to-be-conveyed object, and the means to move a to-be-conveyed object in the alignment conveying apparatus which concerns on the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Alignment conveyance apparatus 11 Conveyance drum 13 Rotating shaft 14 Rotation direction 15 Casing 17 Drive mechanism 21 Top plate 23 Peripheral guide 25, 25a, 25b Sorting guide 26 Reverse sorting guide 27 Lead guide 28 Unloading guide 31 Optical sensor system 33 Focusing part 41 Input port 43, 43a Air supply hole 44 Air supply system 45 Unloading port 51 Semiconductor device 53 Center of gravity position 55 Outer lead 56 Bent part C1 to C10 Traveling direction

Claims (5)

A transport drum having a substantially horizontal top surface and rotating about a substantially vertical rotation axis;
A first start end facing the top surface of the transport drum and first overlapping with the radius of the rotating transport drum is at a fixed distance from the rotation axis, and a first end portion overlapping with the radius of the transport drum last Is a fixed distance from the rotation axis, and a plate-like first side having a first side face that is vertical or nearly vertical and has a smoothly changing curvature between the first start end and the first end. 1 guide and
A second start end facing the upper surface of the transport drum and first overlapping with the radius of the rotating transport drum is at a constant distance from the rotation axis, and a second end portion overlapping with the radius of the transport drum last Is at a constant distance from the rotation axis, and has a second side surface that has a smoothly changing curvature or a vertical side surface between the second start end portion and the second end portion, and On the second side surface close to the bottom surface on the transport drum side, there are a side close to the second start end or the second start end and a side close to the second end or the second end. In the meantime, a projecting portion whose distance from the upper surface of the transport drum changes with a constant inclination, and a plate-shaped second guide having a first gas outlet on the bottom surface close to the projecting portion,
Light that has a third side surface that is vertical or nearly vertical and faces the upper surface of the transport drum at the periphery of the transport drum, and is focused on a certain position on the upper portion of the transport drum that is close to the third side surface A third guide having a second gas outlet provided on the third side surface close to the sensor system and the bottom surface on the transport drum side and which blows out gas according to an instruction of the optical sensor system;
An aligning and conveying apparatus comprising:   The first guide has the first start end portion close to the rotation shaft, the first end portion far from the rotation shaft, and the first side surface on the side far from the rotation shaft. The aligning and conveying apparatus according to claim 1.   The second guide has the second start end portion close to the rotation axis, the second terminal end portion far from the rotation axis, and the second side surface on the side far from the rotation axis. The alignment conveying apparatus according to claim 1 or 2. A transport drum having a function of rotating substantially horizontally around a rotation axis;
A first guide which is at the upper part facing the transport drum and has a function of guiding a material to be transported on the transport drum in a certain direction;
It faces the transport drum and is in the upper part, guides the transported object on the transport drum in a certain direction, contacts a part of the transported object, and rotates the transport drum to rotate the transported object. A second guide having a means for causing a part of the object to be gradually separated from the surface of the conveying drum, and reversing the raised object to be conveyed by 180 degrees from the posture of the object to be conveyed immediately before contact;
In the peripheral part of the transport drum, facing the transport drum and at the top, it is determined whether or not the transported object is different from the desired front and back direction, and if so, the transported object is in a direction approaching the rotating shaft. A third guide having a front and back sorting mechanism having means for moving;
An aligning and conveying apparatus comprising:   The alignment according to any one of claims 1 to 4, wherein at least the first and second guides of the first to third guides are provided on the same substrate. Conveying device.

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