Abstract: Apparatuses, systems, and methods are described for providing a multiple process workflow. The system includes a first process device configured to convey at least a portion of a printed element and an apparatus. The apparatus includes a storage section, an input section configured to receive the at least a portion of the printed element, a gripper configured to selectively transport the at least a portion of the printed element from the input section to the storage section and to selectively transport the at least a portion of the printed element from the storage section, and an output section configured to selectively transfer the at least a portion of the printed element from the storage section. The system further includes a second process device configured to perform at least one operation on the at least a portion of the printed element.

Abstract: A gripping system includes a gripping device and a pitch adjustment device. The gripping device has a row of grippers arranged in a first direction and adapted to grip a row of contacts and a support frame on which at least two adjacent grippers of the row of grippers are slidably attached. The pitch adjustment device is adapted to drive the at least two adjacent grippers to slide in the first direction to adjust a pitch between the two adjacent grippers.

Abstract: The present invention relates to a pick-and-place device constructed for picking and placing multiple objects simultaneously, the pick-and-place device comprising: a base frame, a coupling device, a support unit which is connected to the base frame via the coupling device, wherein the support unit supports a plurality of arms, wherein the support unit is movable relative to the base frame, wherein the support unit comprises: support unit base, at least one cam track body which is connected to the support unit base, wherein multiple cam tracks are defined in the at least one cam track body, wherein the at least one cam track body is rotatable relative to the support unit base, wherein the coupling device couples the rotation of the at least one cam track body relative to the support unit base to the movement of the support unit relative to the base frame.

Abstract: Apparatuses, systems, and methods are provided for print media buffering and sorting. An apparatus for performing at least one of buffering and sorting during an operation includes an enclosure, a storage section within the enclosure, an input section configured to receive at the enclosure at least a portion of a printed element, a gripper associated with the input section, the gripper configured to selectively transport the at least a portion of the printed element from the input section to the storage section and to selectively transport the at least a portion of the printed element from the storage section within the enclosure, and an output section configured to selectively transfer the at least a portion of the printed element from the enclosure.

Abstract: Apparatuses, systems, and methods are provided for print media buffering and sorting. An apparatus for performing at least one of buffering and sorting during an operation includes an enclosure, a storage section within the enclosure, an input section configured to receive at the enclosure at least a portion of a printed element, a gripper associated with the input section, the gripper configured to selectively transport the at least a portion of the printed element from the input section to the storage section and to selectively transport the at least a portion of the printed element from the storage section within the enclosure, and an output section configured to selectively transfer the at least a portion of the printed element from the enclosure.

Abstract: A positioning device (1) for grasping and modifying the position, within a support structure (2) that includes, a set of products (3) for an industrial line that chain-handles these products (3), a device including, for at least one product (3) to move in the support structure (2), a maneuvering unit (4) including a movable block (5) interacting with the at least one product (3), and an actuator (6) defining the position of the block (5). This at least one maneuvering unit (4) also includes a pair of adjustment stops (7) between which the block (5) shuttles, under the action of the actuator (6), in such a way as to move the at least one product (3). A gripping device, a positioning process, and a transfer process are also described.

Abstract: Apparatuses, systems, and methods are provided for print media buffering and sorting. An apparatus for performing at least one of buffering and sorting during an operation includes an enclosure, a storage section within the enclosure, an input section configured to receive at the enclosure at least a portion of a printed element, a gripper associated with the input section, the gripper configured to selectively transport the at least a portion of the printed element from the input section to the storage section and to selectively transport the at least a portion of the printed element from the storage section within the enclosure, and an output section configured to selectively transfer the at least a portion of the printed element from the enclosure.

Abstract: An automatic pitch adjustment machine has a base board, a first slide rail set, a transfer set, a second slide rail set, a cylinder adapter plate, and a material carrier set. The the first slide rail set is mounted on the top surface of the base board. The transfer set has multiple transfer blocks, and each one of the transfer blocks is fixed to a respective lower sliding block of the second slide rail set. The second slide rail set has multiple short rails and multiple upper sliding blocks. The cylinder adapter plate has a driving plate and multiple driving pillars. The material carrier set has multiple material fixing boards, and the multiple material fixing boards are spaced at intervals.

Abstract: A work machine provided with slider that moves in a specified direction, and two mounting heads and attached to the slider is provided. The slider has holding, and first and second attachment sections to which a mounting head is attached. The first attachment section is provided on the holding plate, and the second attachment section is provided on the holding plate so as to be changeable between any distance which is a distance between the first and second attachment sections. Accordingly, it is possible to change the distance between attachment sections and two wide work heads may be mounted on the slider. In a case in which the types of the two work heads are not to be changed, it is possible to change the spacing between the two work heads. By changing the spacing between the two work heads, interference between the work heads may be prevented.

Abstract: A container raising/lowering conveyance apparatus has a supporting structure (a secondary traveling body) which supports four gripping raising/lowering bodies capable of being raised and lowered, and has an X-direction drive means by which the four gripping raising/lowering bodies are moved closer to and away from each other synchronously and symmetrically with respect to a Y-direction center line and a Y-direction drive means by which the four gripping raising/lowering bodies are moved closer to and away from each other synchronously and symmetrically with respect to an X-direction center line. Both the X-direction drive means and the Y-direction drive means are used to enlarge and shrink a right-angled parallelogram surrounded by the four gripping raising/lowering bodies, without changing the center position and the orientation of the right-angled parallelogram.

Abstract: A container raising/lowering conveyance apparatus including four gripping raising/lowering bodies capable of being respectively horizontally fitted to and detached from four corners of an article-conveyance container is configured such that, in a planar view, central raising/lowering link members capable of being raised and lowered are disposed at central positions of respective edges of a right-angled parallelogram surrounded by the four gripping raising/lowering bodies, and each of the central raising/lowering link members and the gripping raising/lowering bodies at both sides thereof are coupled to each other by at least one pair of upper and lower rocking parallel links capable of rocking in the vertical direction.

Abstract: A container raising/lowering conveyance apparatus has a pair of main movable bases relatively movable in the X direction, and on each main movable base, a pair of secondary movable bases relatively movable in the Y direction. Four gripping raising/lowering bodies are supported by the four secondary movable bases so as to be capable of being raised and lowered. Vertical rod-shaped main bodies supported by the main movable bases are raised and lowered by a raising/lowering drive and are disposed at intermediate positions between the Y-direction pairs of the gripping raising/lowering bodies. Upper end portions of the vertical rod-shaped main bodies and gripping raising/lowering bodies at both sides of the vertical rod-shaped main bodies in the Y direction are coupled, allowing the gripping raising/lowering bodies to be relatively movable in the Y direction.

Abstract: A handling device includes a base plate defining an X-Y plane, a plurality of X rails movably supported on the base plate and extending in an X-direction, a plurality of Y rails movably supported on the base plate and extending in a Y-direction perpendicular to the X-direction and a drive system supported on the base plate for moving the X rails in the Y-direction and for moving the Y rails in the X-direction, wherein a spacing between the X rails varies as the X rails move, and wherein a spacing between the Y rails varies as the Y rails move, and wherein the spacing between the X-rails is continuously variable with respect to the spacing between the Y rails.

Abstract: Ovens for preforms in plastic material, applicable in particular but not exclusively to blowing machines and stretch blowing machines, are provided.

Abstract: A positioning jig has a circular part with a diameter that is identical with a diameter of a semiconductor wafer and knock-pins for connecting a periphery of base plate around an opening in a base plate of a conveying tool for a semiconductor wafer. These knock-pins are respectively provided in four blades protruded from predetermined positions of the circular portion at least three directions. When adjusting the projection positions of supporting plates, the knock-pins are fitted into the opening of the base plate of the conveying tool for the semiconductor wafer. The supporting plates moves so that the knock-pins come into contact with an outer edge of the circular part of the prepared positioning jig. The adjusted supporting plates are then fixed on the base plate. The semiconductor wafer is mounted on the adjusted and fixed supporting plates so that the semiconductor wafer is positioned.

Abstract: An end effector for use with a moving device has a frame and a plurality of operational members mounted for movement on the frame. The effector also has an actuation mechanism directly connected to a first operational member and is operable to move the first operational member from a first position to a second position, and from the second position to the first position. A linking apparatus is provided for linking the first operational member to a second operational member. The actuation mechanism moves the first operational member from the first position to the second position, and results in the second operational member being moved by the linking apparatus from a third position to a fourth position. The operational members can be pick up members for picking up items at one pitch and releasing them at a second pitch.

Abstract: Techniques for construction and operation of a programmable product picking apparatus are described herein. Such an apparatus picks up product according to a first spacing (e.g., from a conveyor) and releases the product according to a second spacing (e.g., into a carton). In one possible configuration, a fixed matrix plate defines at least first and second rows of slots. Two movable matrix plates, one that moves right-then-left and one that moves left-then-right, move in opposite directions parallel to the fixed matrix plate according to strokes of pneumatic cylinders. Each of a plurality of product pickers is driven by one of the two movable matrix plates. As that plate moves, the product picker is also moved according to a slot defined in the movable matrix plate. Each product picker comes to a stop when it reaches an end of a slot defined in the fixed matrix plate.

Abstract: A suction gripper arrangement includes several suction gripper arms arranged in a row, which, at their lower ends, each have a suction gripper head with an abutment surface for abutting an article to be sucked onto the suction gripper head. The abutment surfaces of the suction gripper heads of the suction gripper arms neighboring each other are arranged in different planes. Moreover, the invention relates to a suction gripper arrangement in which at least one of the suction gripper arms is connected to an actuator via a lever, wherein both between the lever and the suction gripper arm, and also between the lever and the actuator, respectively, a pivot joint is formed, and wherein the lever is composed of at least to lever parts.

Abstract: An apparatus is disclosed for engaging and releasing a plurality of items. The apparatus comprises a frame having a longitudinally extending support member and at least one group of engagement unit. Each engagement unit has at least one engagement member, and each engagement unit is adapted for engaging, and disengaging from at least one item. Each of the engagement units in the one group is mounted in series for longitudinal movement on the longitudinal support member, and each one of the plurality of engagement units is interconnected to at least one other of the plurality of engagement units. A movement apparatus is provided for engaging at least one but not all of the plurality of engagement units in the one group to displace the group longitudinally on the longitudinal support member.

Abstract: A substrate conveyor track is provided with first to fourth conveyors. Two conveyors situated on both sides of the substrate conveyor track, and the other two conveyors situated at the center of the same. There is enabled selection of any one from a small substrate mounting mode for giving a single substrate conveyance width to the four conveyors and mounting electronic components on four small substrates having the single width; a large substrate mounting mode for actuating all movable conveyors to the center of the substrate conveyor track and mounting electronic components on two large substrates by the two conveyors; and a large-small-substrates mounting mode for bringing the two conveyors on one side of the substrate conveyor track, among the four conveyors, into the small substrate mounting mode and bringing one of the conveyors on the other side of the track into the large substrate mounting mode.

Abstract: An inter-travel-paths transport device transports articles between a first article transfer location and a second article transfer location. It extends in a space upwardly of the article processing devices and connects the first and second article transfer locations. A first transport device transfers an article to or from an article transferring point by vertically moving its holding portion and of transferring an article to or from the first article transfer location by slidingly moving the holding portion at a position which overlaps with the first travel path portion. A second movement slide transport device vertically transfers an article to or from an article transferring point in the same manner with respect to the second travel path portion.

Abstract: A gripper head assembly for a product processing machine includes a gripper support and a plurality of grippers secured to the gripper support to grip a plurality of product routed through the product processing machine. The gripper head assembly is configured such that a spacing of the plurality of grippers is changeable relative to the gripper support. A product processing machine includes a grid assembly for guiding product to a destination and a gripper head assembly for gripping product and guiding the product into the grid assembly. The gripper head assembly includes a gripper support and a plurality of grippers secured to the gripper support to grip a plurality of product routed through the product processing machine. The gripper head assembly is configured such that a spacing of the plurality of grippers is changeable relative to the gripper support.

Abstract: In a delivery of a sheet-processing machine, in particular a printing press, provision is made for chain gripper systems for holding the sheets to be transported at the leading and trailing edges thereof. The holding devices are configured such that they can be displaced relative to one another for the purpose of format adjustment. The chain gripper system has a sprocket drive shaft and a sprocket deflection shaft for the chains of the chain gripper system. Here, provision is made for both the sprocket drive shaft and the sprocket deflection shaft to have a clutch.

Abstract: An end effector for use with a moving device has a frame and a plurality of operational members mounted for movement on the frame. The effector also has an actuation mechanism directly connected to a first operational member and is operable to move the first operational member from a first position to a second position, and from the second position to the first position. A linking apparatus is provided for linking the first operational member to a second operational member. The actuation mechanism moves the first operational member from the first position to the second position, and results in the second operational member being moved by the linking apparatus from a third position to a fourth position. The operational members can be pick up members for picking up items at one pitch and releasing them at a second pitch.

Abstract: The method and device are for blow-molding containers. A blank is molded in a blowing mold by means of a blowing pressure after a thermal treatment. The blanks are positioned along a part of the transport path thereof by means of a support element (42) held by a rotating transfer wheel (41). The support element is movably mounted relative to the transfer wheel. The support element is positioned by means of a cam controller (50). The cam controller comprises a positionable cam segment (56) which preselectably places the support element in a working or a resting position. In the working position the support elements are brought into a transfer region and in the resting position are held away from said transfer region.

Abstract: A component mounting apparatus includes: a load area to load a substrate; an unload area to unload the substrate; a main area interposed between the load and unload areas, including a first area including a first mounting area, a second area including a second mounting area, and a third area interposed therebetween; two mounting units to mount, on the substrate, first and second components in the first and second mounting areas, respectively; a conveyor group to convey the substrate, including first to fourth conveyors, the second and fourth conveyors being capable of receiving the substrate from the first and third conveyors in the first and second areas, respectively; and a driving mechanism capable of moving at least one of the first and second conveyors between the first and third areas and moving at least one of the third and fourth conveyors between the second and third areas.

Abstract: An apparatus for transferring a plurality of electronic components includes a row of pick heads operative to pick up the electronic components simultaneously from a first location and to place them at a second location. Additionally, there is a driving mechanism operative to drive the pick heads to move relative to one another in directions which are parallel to a length of the row of pick heads whereby to adjust a pitch width of the pick heads.

Abstract: A pitch adjustment device for blow molding machine is disclosed, which comprises: a platform, a driving unit, a screw rod unit, and a plurality of clipping units. The screw rod unit is composed of a transmission mechanism and a screw rod, in which the screw rod is pivotally mounted on the platform in a manner that when the platform is driven to move, the moving platform will activate the transmission mechanism for bringing along the screw rod to rotate.

Abstract: A pick and place apparatus includes a 1st to an nth device holding element arranged in a lengthwise direction, every one of the 1st to the nth device holding element being connected to its neighboring one(s) of the 1st to the nth device holding element by means of at least one pitch setting ring; a belt having a first coupling part at an upper part thereof for being coupled to the 1st device holding element and a second coupling part at a lower part thereof for being coupled to the nth device holding element; and a driven pulley and a differential pulley. The driven and the differential pulley are rotated by being engaged with the belt to move the 1st and the nth device holding element such that the 1st device holding element moves in a direction opposite to the nth device holding element.

Abstract: A conveyance apparatus includes: a stage section having: a feeding stage on which a work to be fed is placed; a first working stage on which the work is subjected to a working process; a second working stage on which the work is subjected to the same working process as that of the first working stage; and a discharging stage on which the work to be discharged is placed; and a conveyance section having: a feeding arm feeding the work from the feeding stage to the working stages; a discharging arm which is provided on a discharging stage side of the feeding arm and discharges the work from the working stages to the discharging stage; a first drive unit moving the two arms in an alignment direction of the four stages; and a second drive unit changing distance between the two arms in the alignment direction.

Abstract: The invention proposes a device (10) for transferring items (3) from an items (3) loading station (13) to an items (3) unloading station (14), which comprises: a group (18) of modules (19a-d) mounted such that they can move in a longitudinally direction, able to adopt a contracted configuration in which the modules (19a-d) are separated by a first spacing (pl), and a deployed configuration in which the modules (19a-d) are separated by a second spacing (F), means (34) of linking one module (19a) to another (19b), comprising a lever (38) mounted such that it is articulated on a first module (19b) and connected to a second module (19a), this lever (3) furthermore cooperating with a groove (46) having an intermediate section (46c) forming an angle with the direction of movement of the group (18) of modules (19a-d), and means (35, 36) of controlling the movement of the group (18). Application to the transfer of blanks from a heating station to a station for molding receptacles from blanks.

Abstract: An apparatus for transporting objects may include a plurality of grippers having a first spacing at a first position and second spacing at a second position. A drive mechanism may be provided is for selectively displacing the grippers from the first position to the second position to adjust the spacing between the grippers.

Abstract: A transfer device of a handler for testing semiconductor devices is provided in which a pitch between each of a plurality of picker heads may be adjusted without replacing a cam plate. The transfer device may include a base part, a plurality of picker heads movably mounted on the base part, and a cam plate movably mounted on the base part and having a plurality of inclined cam grooves formed therein. Each picker head is connected to a corresponding cam groove by a connection part extending therebetween, with an end of each connection part movably coupled to its respective cam groove. A driving unit reciprocates the cam plate so that, as the ends of the connection parts move within the cam grooves, a position of the picker heads may be varied.

Abstract: An end effector for use with a moving device has a frame and a plurality of operational members mounted for movement on the frame. The effector also has an actuation mechanism directly connected to a first operational member and is operable to move the first operational member from a first position to a second position, and from the second position to the first position. A linking apparatus is provided for linking the first operational member to a second operational member. The actuation mechanism moves the first operational member from the first position to the second position, and results in the second operational member being moved by the linking apparatus from a third position to a fourth position. The operational members can be pick up members for picking up items at one pitch and releasing them at a second pitch.

Abstract: To equally space items along a first path, a predetermined number of items is moved towards each other to minimize distances between the items, and a gear mechanism is engaged with each item. The gear mechanism includes crossed bars, wherein pairs of the bars are coupled at middle joints so that each pair of bars forms an X-shaped structure and opposite ends of an X-shaped structure are coupled at end joints to respective ends of neighboring X-shaped structures. The gear mechanism is activated so that the gear mechanism acts upon each item and moves each item along the first path a predetermined distance to equally space the items.

Abstract: An apparatus for transferring semiconductor devices in a semiconductor device handler is provided which simplifies set up procedures when a species of device to be tested, and the associated change kit, is changed. A reference picker and three variable pickers are positioned within the framing structure of the handler, with the motion of the third variable picker synchronized relative to the motion of the first and second variable pickers. A plurality of sensors determine an initial position of the variable pickers, and then motion of the variable pickers is monitored by respective scanning heads and linear scales until a new setup position which corresponds to the new device species is attained. In this manner, the procedure and structure for varying position and pitch of the various pickers can be simplified, thus reducing processing time and cost.

Abstract: A servo adjustable gripper device for gripping and transporting at least two objects such as boxes includes a frame and at least two gripper assemblies connected with carriages slidably connected with the frame. The gripper device further includes a robotic arm which controls further movement and placement of the boxes on a pallet. The position of the gripper assemblies on the frame is adjustable to provide equal lifting force for a variety of differently sized boxes or for different numbers of boxes.

Abstract: A stacking conveyor conveys packets so that the conveyed packets become stacked together in a standing up configuration as an array of packets. First and second gripping members are automatically controlled so that the first and second gripping members mechanically move independently of each other to grip the array between the first and second gripping members and move the gripped array to a different location such as, for example, to a packaging station for packaging the array.

Abstract: In a device for transferring articles in a controlled configuration from a feeding line to a receiving line, an oscillating arm having suction grippers picks up the articles, arranged in a first configuration, at an inlet station and transfer the articles up to an outlet station. The oscillating arm and grippers release the articles at the outlet station in a second configuration. A plurality of collecting compartments receive the articles in the second configuration. During transferring, guiding cams cooperate with the grippers for changing uniformly the distance between the articles from the first configuration to the second configuration. Pushers convey then the articles in the collecting compartments into seats made in the receiving line.

Abstract: In an apparatus for feeding articles to a transferring line leading to a container filling machine, a conveyor moves a plurality of articles to an inlet section of the apparatus, where a plate moves vertically from the inlet section to an outlet section of the apparatus, where the articles are to be released. A plurality of collecting magazines are placed at the outlet section for receiving and piling the articles and then a pusher moves the articles situated in a pile in each collecting magazine to a related box of a box transferring line.

Abstract: Non-symmetrical molded articles, such as large preforms, are handled by a handling system into which an array of molded articles are transferred from a mold having a pitch separation The handling system has an arranging station configured to receive and align a first set of molded articles, which arranging station is further configured to receive and align a second set of molded articles in an opposingly orientated direction to the first set. To reduce the pitch separation, the arranging station includes a closure mechanism that brings together the first and second sets of molded articles in a substantially linear array. Once in the linear array, a handling device operates to pick up and crate the linear array of preforms. Transfer and pick-up of the preforms can be accomplished using a multi-function, multi-axis robot that supports take-out tubes and suction pads.

Abstract: A device for treating preforms to obtain containers made of plastics, for example bottles for food applications, comprising an ejector adapted to pick up and release one or more preforms, arranged so that their neck is directed upwardly, a heating conveyor, and a unit for transferring the preforms unloaded from the heating conveyor, which is adapted to modify their spacing and speed, adapting them to the spacing and speed of an adjacent and axially offset blow-molding conveyor to which the one or more preforms are transferred.

Abstract: A method for calibrating a first co-ordinate frame of a robot and effector in a second frame of reference of a sensor when the sensor is substantially rigidly attached to the robot and effector, including the steps of measuring first positions of a plurality of first light sources relative to the sensor, with the first positions corresponding to a first absolute position of the robot and effector, moving the robot and effector, measuring second positions of the plurality of first light sources, which second positions correspond to the desired second absolute position of the robot and effector and the sensor, repeating the measurement of and movement from the first to second positions so as to provide at least two sets of measurements of first and second positions corresponding to at least two movements, each of which at least two movements is a known, unique transform, combining the at least two sets of measurements of first and second positions so as to calibrate the first co-ordinate frame in the second fra

Abstract: An apparatus and method for packaging containers, of the type having an engagement lip, wherein the apparatus includes tacks to engage the engagement lip to move the containers from starting point to a delivery point. The containers are moved by the apparatus while being engaged by the track such that the containers are never free from the track until loaded on a pallet. A set of the containers is constricted into a bundle and the bundle is then resquared and set on a pallet. One a pallet includes a sufficient number of bundles the pallet is bound for shipment or storage.

Abstract: In order to monitor the adjustment state of the entrainers (1), which are arranged in each case in pairs transverse to the feed direction (4), of a feed chain (2), it is proposed to arrange an adjusting station along the guide of the feed chain (2) and to arrange a measuring station at a spaced interval therefrom. The adjusting station serves to adjust manually the entrainers (1) in a common adjusting plane extending perpendicular to the feed direction (4), whereas the measuring station is arranged to detect the adjustment position of the two entrainers (1) in a measuring plane likewise perpendicular to the feed direction (4) and, in accordance with a tolerance field which can be defined by the user, to generate an error signal which at the same time renders it possible to identify maladjusted entrainers (1).

Abstract: A pick and place quadruple head construction for transferring as many as four small workpieces such as computer chips and the like simultaneously from a first matrix to a second matrix. The four individual head units are arranged to form a rectangular area which may be contracted or enlarged upon moving three of the units relative to each other along two mutually perpendicular axes. Each unit includes a reciprocable spindle capable of movement along a third axis, and rotatable about the third axis in repeatable cyclic manner. The spindles include vacuum means for picking up and releasing transferred workpieces. Also disclosed is a wear compensating structure for the spindle. In several of the disclosed embodiments, the head units are arranged such that the reciprocating spindles are located in a common vertical plane so that the articles deposited on the place matrix permit an in-line separation.

Abstract: This invention relates to a device for engaging on a configuration of a number of products with a certain mutual distance. The present invention has a frame and a number of pushing members mounted on the frame for movement between a first and a second position. The present invention also has a drive for moving the pushing members and a number of engaging members mounted on the frame for movement with a variable mutual distance. These engaging members are configured to correspond with the configuration of the products. Each of the pushing members has a contact surface which lies against an engaging member for varying the distance between adjacent engaging members during movement of the pushing member between the first and the second position.

Abstract: A method and apparatus adapted to bunch together a predetermined number of inverted PTPs and uninverted PTPs into a bundle, and then transfer each PTP bundle to a bucket conveyor which moves intermittently in parallel with a conveying passage. A multitude of PTPs, a portion of which are inverted with respect to the conveying direction and the rest of which are not inverted, are conveyed along a first conveying passage while maintaining the blistered surfaces of the inverted and uninverted PTPs in parallel with each other. A selected portion of the PTPs being conveyed in the first conveying passage is pinched and separated from the same passage. The separated PTPs are bunched together while the spacing between the separated PTPs is narrowed in the conveying direction. The bunched PTPs are transferred onto a second conveying passage across the first conveying passage. The bunched PTPs are loaded into a bucket provided on a bucket conveyor which intermittently travels along the second conveying passage.