US20040098951A1 - Device for introducing electric components into continuous tapes - Google Patents
Device for introducing electric components into continuous tapes Download PDFInfo
- Publication number
- US20040098951A1 US20040098951A1 US10/471,754 US47175403A US2004098951A1 US 20040098951 A1 US20040098951 A1 US 20040098951A1 US 47175403 A US47175403 A US 47175403A US 2004098951 A1 US2004098951 A1 US 2004098951A1
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- Prior art keywords
- lead frame
- foregoing
- holders
- components
- holder
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67132—Apparatus for placing on an insulating substrate, e.g. tape
Definitions
- the invention pertains to a device according to preamble, patent claim 1 .
- Devices or machines are known in the art that are also designated as so-called back-end machines and serve to stamp out electric components from a lead frame and, after various additional steps, for example measuring, laser labeling, etc., to insert them at a belt station in holders or cups of belts waiting there.
- the holders designed as vacuum holders are located on a transport element forming a closed loop, which is pulse driven in one direction of rotation, so that these holders with the components held there move over a relatively long distance from a pick up position, at which the components are stamped out of the lead frame, to a delivery or insertion position, at which the components are each then inserted in a holder of a belt.
- the object of the invention is to present a device having a simple and reliable design while enabling high performance in the insertion of components in belts.
- a device as claimed in claim 1 is embodied.
- the insertion of components in belts directly from the lead frame for which purpose the at least one holder, which for example is a vacuum holder, performs only a relatively short, back-and-forth stroke movement in the “first” axis direction, between a position above a component in the lead frame (pick up position) and a position (delivery or insertion position) above a waiting receptacle (cup) of the at least one belt.
- the at least one holder which for example is a vacuum holder, performs only a relatively short, back-and-forth stroke movement in the “first” axis direction, between a position above a component in the lead frame (pick up position) and a position (delivery or insertion position) above a waiting receptacle (cup) of the at least one belt.
- the at least one holder performs only a relatively short, back-and-forth stroke movement in the “first” axis direction, between a position above a component in the lead frame (pick up position) and a position
- the components are already stamped out and are held in the lead frame only by suspension elements, which are formed for example from the suspension noses or from break-off positions, for example from the material of the component housing.
- suspension elements which are formed for example from the suspension noses or from break-off positions, for example from the material of the component housing.
- a preferred embodiment of the invention provides for several components, with which during one cycle several components, preferably several components of different rows of the lead frame, can be removed from the latter and inserted into receptacles of one or more belts.
- FIG. 1 shows a simplified schematic representation of a device for insertion of electric components from a lead frame directly into a belt
- FIG. 2 shows the device of FIG. 1 in side view
- FIG. 3 shows a schematic cross section view corresponding to line I-I of FIG. 1;
- FIG. 4 and 5 show an enlarged representation of details of FIGS. 1 and 2;
- FIG. 6 shows a simplified representation of a stamped component in the lead frame.
- 1 designates a lead frame and 2 designates electric components in the form of SMDs, for example transistors, which are located in several longitudinal and transverse rows in the lead frame 1 .
- the electric components 2 are removed by means of the device or belt station generally designated 3 in the drawings from the lead frame 1 and inserted at a delivery or insertion position 5 in cups 6 of a belt 7 waiting to the side of the lead frame 1 .
- the components therefore form longitudinal rows extending lengthwise to the belt, in the depicted embodiment a total of four longitudinal rows, and transverse rows extending crosswise to the belt, whereby in the depicted embodiment each transverse row has four components 2 .
- the components 2 are already stamped from the lead frame 1 so far that connections 2 ′ of the components 2 no longer connected with the remaining lead frame are formed from original elements of the lead frame and which (connections) extend away from the body 2 ′′ of the components.
- the components 2 are still held only by so-called suspension noses 8 of the lead frame 1 that engage with recesses of the housing 2 ′′, as represented schematically in FIG. 6.
- the components 2 the connections 2 ′ of which were already bent in the required manner at a preceding bending station not depicted or upon stamping, and the electric values of which were checked or measured in a preceding measuring station likewise not depicted, can be removed from the lead frame very easily by pressing them out.
- a special feature of the belt station 3 consists in the fact that in each cycle one component 2 is removed from each longitudinal row of the lead frame 1 and each component is inserted into a respective cup 6 of a belt 7 .
- the belts 7 waiting at the insertion position 5 in the depicted embodiment corresponding to the number of the longitudinal rows of the components 2 in the lead frame 1 , which (belts) are arranged there with their longitudinal extension horizontally and perpendicularly to the longitudinal extension of the lead frame 1 , in a common center or axis distance, which corresponds to an even-numbered multiple of the distance between the transverse rows of components in the lead frame 1 .
- the axis distance of the belts 7 is equal to two times the distance of the transverse rows in the lead frame 1 .
- the components 2 are removed diagonally from the lead frame 1 in each cycle, while the components 2 are inserted into the waiting cups 6 corresponding to the line B-B of FIG. 1 parallel to the longitudinal extension of the lead frame 1 .
- the lead frame is advanced in preparation for the next cycle by one stroke equal to the distance of two transverse rows corresponding to the arrow C, whereby this advance can already be initiated when the components 2 are removed from the lead frame 1 .
- the belts 7 are further moved by means of a suitable drive not depicted, by one stroke that is equal to the distance between two cups 6 on the belts 7 . If no component 2 was inserted into a waiting cup 7 in a cycle because this component was lost during the transfer from the pick up position 4 to the delivery position 5 or was intentionally removed from the lead frame 1 as a faulty component for example in a preceding measuring station, a repair program is activated, i.e. no advance of the affected belt takes place after the cycle, so that cups 6 of this belt not filled during this cycle are available for insertion of a component 2 in the following cycle, thus preventing component gaps in the belt 7 .
- the belt station 3 consists of several pushers 9 , which can be moved (double arrow E) separately on a common guide and stroke element 10 in a first axis direction perpendicular to the longitudinal extension of the lead frame 1 and parallel to the surface of this lead frame, i.e. in horizontal direction perpendicular to the longitudinal extension of the lead frame 1 .
- a pick-up element or holder for receiving and holding the component 2 , in the depicted embodiment in the form of a vacuum pipette 11 .
- Each pusher 9 is guided in the guide elements 10 in such a way that its vacuum pipette 11 can be moved between a first position at the pick up position 4 and over a longitudinal row of the components 2 in the lead frame 1 and a second position at the insertion position 5 and over a cup 6 of a belt 7 , whereby the vacuum pipettes 11 in the first position on the line A-A are located over another longitudinal row of the components 2 diagonally to the longitudinal extension of the lead frame 1 and in the second position on the line B-B parallel to the longitudinal extension of the lead frame 1 .
- the vacuum pipettes and the pushers 9 execute strokes of different sizes in this horizontal movement, the upper vacuum pipette 1 and its pusher 9 in FIG.
- Each pusher 9 and its vacuum pipette 11 is pre-tensioned by means of a separate spring 13 in the second position of the horizontal stroke.
- the vacuum pipettes 11 and their pushers 9 can be moved separately into the first position of their horizontal stroke by means of a drive 14 .
- the drive 14 consists, e.g., of a drum 15 , which can rotate back and forth by means of a rotor, for example a servo motor, on an axis perpendicular to the movement of direction E of the pushers 9 , by a pre-defined angle, as indicated in FIG. 2 by the double arrow F.
- a rotor for example a servo motor
- the axis of the drum 15 is a horizontal axis that is parallel to the longitudinal extension of the lead frame 1 .
- the drum 15 has regular cylindrical drum sections 15 a - 15 d each with a different diameter, each of which is allocated to a pusher 9 and the drum section 15 a having the largest diameter for the upper pusher 9 in FIG. 1 with the largest horizontal stroke and the drum section 15 d having the smallest diameter for the lower pusher 9 in FIG. 1 with the smallest horizontal stroke.
- One end of a pulling element 16 is guided across each drum section 15 a - 15 d, for example a pull cable, which engages with its other end the allocated pusher 9 on the end opposite the vacuum pipette 11 in the respective drum section 15 a - 15 d.
- the pulling elements 16 are each guided across a deflection pulley 17 , so that the drum 15 can be located below the plane of the movement of the pushers 9 and in particular the sections 16 ′ of the pulling elements 16 extending between the end of the respective pusher 9 and the deflection pulley 17 are in a common horizontal plane, in which the axes of the pushers 9 are also located.
- the diameters of the drum sections 15 a - 15 d are coordinated so that in a specified swing angle F of the drum 15 the pushers 9 execute the required different movements or strokes. It is basically also possible to limit these different strokes of the pushers 9 by means of suitable stops.
- the drive for the drum 15 is preferably designed so that a soft start takes place at the beginning of each stroke from the pick up position 4 into the delivery position 5 and a soft stop takes place at the end of this stroke, so as to prevent accelerations and decelerations, which can cause the components 2 suspended on the vacuum pipettes 11 to be lost.
- Each vacuum pipette 11 consists in the manner known in the art of one pipette body 11 ′ tapered at its lower end, with an open hole 11 ′′ on the bottom of the pipette body, which (hole) can be connected in an individually controlled manner by means of a vacuum connection, e.g. by means of a connection 9 ′ extending partially also in the respective pushers 9 and by means of a control valve of a control valve device 27 with a vacuum or negative pressure source 28 .
- the distance of the vacuum pipettes 11 in the longitudinal direction of the lead frame 1 is equal to the axis distance of the belts 7 .
- the axis of the hole 11 ′′ of each vacuum pipette 11 is in a common vertical plane with the middle axis of a belt 7 .
- the distance of the belts 7 which is a multiple, i.e. two times the distance of the transverse rows of the components 2 in the lead frame 1 , provides sufficient space for the vacuum pipettes 11 despite the very close arrangement of the components 2 in the lead frame 1 .
- the individual vacuum pipettes 11 can swivel or rotate on bearings in the corresponding pusher 9 on their vertical axis.
- Each pusher 9 is provided for this purpose with a swivel drive 19 for each vacuum pipette 11 , with which this pipette 11 can rotate in a controlled manner on a specified angle, for example 180° on its vertical pipette axis, in order to turn components 2 , for example.
- a rotation or swivel angle of less than 180°, for example 90°, is also conceivable for the vacuum pipettes 11 , in order to insert the components 2 in the cups 6 of the belts 7 in an orientation with respect to the longitudinal axis of the belt corresponding to the orientation of the component 2 in the lead frame 1 with respect to the longitudinal axis of the lead frame.
- the actuating device 19 for the controlled turning of the respective vacuum pipette 11 consists in the depicted embodiment of a servo component 20 in the form of a pneumatic cylinder, which works between a bearing on the pusher 9 and one end of a belt or strap 21 , which is guided by a belt pulley 22 and the other end of which is connected with one end of a spring 23 , the other end of which is held on the pusher 9 .
- the belt pulley 22 is connected to drive the respective vacuum pipette 10 and is provided with radially extending pins 24 that engage in perforations of the belt 21 , so as to enable defined control of the angular rotation of the respective vacuum pipette 11 on its vertical axis.
- the guide and stroke element 10 is located together with the drum 15 , the rotation or swivel drive for this drum and the deflection pulleys 17 on a machine element or slide 25 , which can move vertically up and down by a specified stroke (double arrow G), for example by means of a common drive of the overall device, whereby the drive for the drums 15 is coordinated with this vertical stroke of the slide 25 and therefore of the guide element 10 and the pushers 9 in such a way that the horizontal stroke of the pushers 9 takes place only when the guide element 10 is raised.
- tappets 26 Below the horizontal plane of the lead frame 1 there are tappets 26 , the parallel tappet axes of which are oriented vertically and which execute a tappet or stroke movement corresponding to arrow H, synchronously with the stroke of the guide element 10 .
- the tappets 26 are distributed diagonally to the longitudinal extension of the lead frame 1 in such a way that each tappet 26 is arranged in the same axis with a vacuum pipette 11 located in the pick up position 4 or in the first position.
- the principle of the belt station 3 can therefore be described in detail as follows:
- the vacuum pipettes 11 are in the pick up position 4 with the guide element 10 raised vertically. Below each vacuum pipette 11 there is a component 2 in the lead frame 1 .
- the pushers 9 and therefore the vacuum pipettes 11 are lowered so that each vacuum pipette 11 comes to bear with the end there of the hole 11 ′′ against a component 2 .
- the respective component 2 is fixed with the top of its housing 2 ′′ on the vacuum pipette 11 .
- the tappets 26 bear against the bottom of the housing 2 ′′ so that each component is held between a vacuum pipette 11 and a tappet 26 .
- all vacuum pipettes 11 are moved vertically upward by lifting the slide 25 .
- the tappets 26 follow the movement of the vacuum pipettes 11 upward as long as the components 2 are being separated from the lead frame 1 .
- the clamping of the components 2 between the vacuum pipettes 11 and the corresponding tappets 26 prevents twisting of the components 2 when they are pressed out of the lead frame or upon release of the suspension noses 8 from the components 2 .
- the further lifting of the guide elements 10 causes the vacuum pipettes 11 to be raised vertically until the components 2 suspended on these pipettes 11 by means of the vacuum are at a sufficient distance from the top of the lead frame 1 and are also at a distance from the top end of the tappets 26 .
- the drive of the drum 15 is actuated for the horizontal stroke, so that the vacuum pipettes 11 are moved into the insertion position 5 , above a cup 6 waiting at this insertion position.
- This movement takes place by means of releasing the springs 13 and by unwinding the pulling elements 16 from their respective drum section 15 a - 15 d.
- the slide 25 causes all pushers 9 and the vacuum pipettes 11 to be lowered, so that each component 2 suspended on a vacuum pipette is inserted into a cup 6 .
- the vacuum at the vacuum pipettes 11 is cut off, so that they release the components 2 and are then removed from the respective cup 6 through renewed lifting of the slide 25 .
- Driving the drum 15 in the opposite direction causes the vacuum pipettes 11 to be returned to the pick up position 4 in a subsequent return stroke.
- the drive 14 has a common drum 15 for all pulling elements 16 and holders 11 .
- separate drives 14 or drums 15 can also be provided for the individual holders 11 or for several groups of at least two holders each, in which case they would be able to be controlled separately.
Abstract
The invention relates to a novel device for introducing (packaging) electric components that are punched out of a lead-frame into/in recesses or pockets of at least one tape that are made available at an insertion position. The insertion process is carried out using at least one component holder that can be displaced between a removal position and the insertion position.
Description
- The invention pertains to a device according to preamble,
patent claim 1. - Devices or machines are known in the art that are also designated as so-called back-end machines and serve to stamp out electric components from a lead frame and, after various additional steps, for example measuring, laser labeling, etc., to insert them at a belt station in holders or cups of belts waiting there.
- In these known back-end machines, the holders designed as vacuum holders are located on a transport element forming a closed loop, which is pulse driven in one direction of rotation, so that these holders with the components held there move over a relatively long distance from a pick up position, at which the components are stamped out of the lead frame, to a delivery or insertion position, at which the components are each then inserted in a holder of a belt.
- Also known in the art are special lead frame designs in which the components in the lead frame are held not only by lead frame elements that form the connections after stamping of the components, but also by means of so-called “suspension noses”, which only engage with recesses of the housings of the components so that the components are still held in the lead frame after being stamped out, but can be removed easily, e.g. by pressing them out.
- The object of the invention is to present a device having a simple and reliable design while enabling high performance in the insertion of components in belts. In order to achieve this object, a device as claimed in
claim 1 is embodied. - In the device according to the invention, the insertion of components in belts directly from the lead frame, for which purpose the at least one holder, which for example is a vacuum holder, performs only a relatively short, back-and-forth stroke movement in the “first” axis direction, between a position above a component in the lead frame (pick up position) and a position (delivery or insertion position) above a waiting receptacle (cup) of the at least one belt. For removal or pick up of the respective component from the lead frame and for insertion of this component into the receptacle of the belt, another relative movement between the lead frame or belt and the at least one holder takes place in the “second” axis direction, i.e. preferably a movement of the at least one holder in this second axis direction.
- Upon pick up, the components are already stamped out and are held in the lead frame only by suspension elements, which are formed for example from the suspension noses or from break-off positions, for example from the material of the component housing. A preferred embodiment of the invention provides for several components, with which during one cycle several components, preferably several components of different rows of the lead frame, can be removed from the latter and inserted into receptacles of one or more belts.
- Further embodiments of the invention are the subject of the dependant claims.
- The invention is described below in more detail based on a sample embodiment depicted in the following drawings:
- FIG. 1 shows a simplified schematic representation of a device for insertion of electric components from a lead frame directly into a belt;
- FIG. 2 shows the device of FIG. 1 in side view;
- FIG. 3 shows a schematic cross section view corresponding to line I-I of FIG. 1;
- FIG. 4 and5 show an enlarged representation of details of FIGS. 1 and 2;
- FIG. 6 shows a simplified representation of a stamped component in the lead frame.
- In the drawings,1 designates a lead frame and 2 designates electric components in the form of SMDs, for example transistors, which are located in several longitudinal and transverse rows in the
lead frame 1. Theelectric components 2 are removed by means of the device or belt station generally designated 3 in the drawings from thelead frame 1 and inserted at a delivery orinsertion position 5 incups 6 of abelt 7 waiting to the side of thelead frame 1. The components therefore form longitudinal rows extending lengthwise to the belt, in the depicted embodiment a total of four longitudinal rows, and transverse rows extending crosswise to the belt, whereby in the depicted embodiment each transverse row has fourcomponents 2. - Preceding the belt station, in a work station of a total backend line machine not further depicted, the
components 2 are already stamped from thelead frame 1 so far thatconnections 2′ of thecomponents 2 no longer connected with the remaining lead frame are formed from original elements of the lead frame and which (connections) extend away from thebody 2″ of the components. Thecomponents 2 are still held only by so-called suspension noses 8 of thelead frame 1 that engage with recesses of thehousing 2″, as represented schematically in FIG. 6. Thecomponents 2, theconnections 2′ of which were already bent in the required manner at a preceding bending station not depicted or upon stamping, and the electric values of which were checked or measured in a preceding measuring station likewise not depicted, can be removed from the lead frame very easily by pressing them out. - A special feature of the
belt station 3 consists in the fact that in each cycle onecomponent 2 is removed from each longitudinal row of thelead frame 1 and each component is inserted into arespective cup 6 of abelt 7. - For this purpose, there are four
belts 7 waiting at theinsertion position 5 in the depicted embodiment corresponding to the number of the longitudinal rows of thecomponents 2 in thelead frame 1, which (belts) are arranged there with their longitudinal extension horizontally and perpendicularly to the longitudinal extension of thelead frame 1, in a common center or axis distance, which corresponds to an even-numbered multiple of the distance between the transverse rows of components in thelead frame 1. In the depicted embodiment, the axis distance of thebelts 7 is equal to two times the distance of the transverse rows in thelead frame 1. - As indicated in FIG. 1 by the line A-A, the
components 2 are removed diagonally from thelead frame 1 in each cycle, while thecomponents 2 are inserted into thewaiting cups 6 corresponding to the line B-B of FIG. 1 parallel to the longitudinal extension of thelead frame 1. In each cycle, the lead frame is advanced in preparation for the next cycle by one stroke equal to the distance of two transverse rows corresponding to the arrow C, whereby this advance can already be initiated when thecomponents 2 are removed from thelead frame 1. - After insertion of the
components 2 into thecups 6 waiting at thedelivery position 5, thebelts 7 are further moved by means of a suitable drive not depicted, by one stroke that is equal to the distance between twocups 6 on thebelts 7. If nocomponent 2 was inserted into awaiting cup 7 in a cycle because this component was lost during the transfer from the pick upposition 4 to thedelivery position 5 or was intentionally removed from thelead frame 1 as a faulty component for example in a preceding measuring station, a repair program is activated, i.e. no advance of the affected belt takes place after the cycle, so thatcups 6 of this belt not filled during this cycle are available for insertion of acomponent 2 in the following cycle, thus preventing component gaps in thebelt 7. - In particular, the
belt station 3 consists ofseveral pushers 9, which can be moved (double arrow E) separately on a common guide andstroke element 10 in a first axis direction perpendicular to the longitudinal extension of thelead frame 1 and parallel to the surface of this lead frame, i.e. in horizontal direction perpendicular to the longitudinal extension of thelead frame 1. On the free end of eachpusher 9 there is a pick-up element or holder for receiving and holding thecomponent 2, in the depicted embodiment in the form of avacuum pipette 11. Eachpusher 9 is guided in theguide elements 10 in such a way that itsvacuum pipette 11 can be moved between a first position at the pick upposition 4 and over a longitudinal row of thecomponents 2 in thelead frame 1 and a second position at theinsertion position 5 and over acup 6 of abelt 7, whereby thevacuum pipettes 11 in the first position on the line A-A are located over another longitudinal row of thecomponents 2 diagonally to the longitudinal extension of thelead frame 1 and in the second position on the line B-B parallel to the longitudinal extension of thelead frame 1. For this purpose, the vacuum pipettes and thepushers 9 execute strokes of different sizes in this horizontal movement, theupper vacuum pipette 1 and itspusher 9 in FIG. 1 executing the largest horizontal stroke and thelower vacuum pipette 11 and itspusher 9 executing the smallest stroke. Eachpusher 9 and itsvacuum pipette 11 is pre-tensioned by means of aseparate spring 13 in the second position of the horizontal stroke. Thevacuum pipettes 11 and theirpushers 9 can be moved separately into the first position of their horizontal stroke by means of adrive 14. - The
drive 14 consists, e.g., of adrum 15, which can rotate back and forth by means of a rotor, for example a servo motor, on an axis perpendicular to the movement of direction E of thepushers 9, by a pre-defined angle, as indicated in FIG. 2 by the double arrow F. In the depicted embodiment the axis of thedrum 15 is a horizontal axis that is parallel to the longitudinal extension of thelead frame 1. - The
drum 15 has regularcylindrical drum sections 15 a-15 d each with a different diameter, each of which is allocated to apusher 9 and the drum section 15 a having the largest diameter for theupper pusher 9 in FIG. 1 with the largest horizontal stroke and the drum section 15 d having the smallest diameter for thelower pusher 9 in FIG. 1 with the smallest horizontal stroke. One end of apulling element 16 is guided across eachdrum section 15 a-15 d, for example a pull cable, which engages with its other end the allocatedpusher 9 on the end opposite thevacuum pipette 11 in therespective drum section 15 a-15 d. Thepulling elements 16 are each guided across adeflection pulley 17, so that thedrum 15 can be located below the plane of the movement of thepushers 9 and in particular thesections 16′ of thepulling elements 16 extending between the end of therespective pusher 9 and thedeflection pulley 17 are in a common horizontal plane, in which the axes of thepushers 9 are also located. - The diameters of the
drum sections 15 a-15 d are coordinated so that in a specified swing angle F of thedrum 15 thepushers 9 execute the required different movements or strokes. It is basically also possible to limit these different strokes of thepushers 9 by means of suitable stops. - The drive for the
drum 15 is preferably designed so that a soft start takes place at the beginning of each stroke from the pick upposition 4 into thedelivery position 5 and a soft stop takes place at the end of this stroke, so as to prevent accelerations and decelerations, which can cause thecomponents 2 suspended on thevacuum pipettes 11 to be lost. - Each
vacuum pipette 11 consists in the manner known in the art of onepipette body 11′ tapered at its lower end, with anopen hole 11″ on the bottom of the pipette body, which (hole) can be connected in an individually controlled manner by means of a vacuum connection, e.g. by means of aconnection 9′ extending partially also in therespective pushers 9 and by means of a control valve of acontrol valve device 27 with a vacuum ornegative pressure source 28. The distance of thevacuum pipettes 11 in the longitudinal direction of thelead frame 1 is equal to the axis distance of thebelts 7. The axis of thehole 11″ of eachvacuum pipette 11 is in a common vertical plane with the middle axis of abelt 7. The distance of thebelts 7, which is a multiple, i.e. two times the distance of the transverse rows of thecomponents 2 in thelead frame 1, provides sufficient space for thevacuum pipettes 11 despite the very close arrangement of thecomponents 2 in thelead frame 1. - In the depicted embodiment, the
individual vacuum pipettes 11 can swivel or rotate on bearings in thecorresponding pusher 9 on their vertical axis. Eachpusher 9 is provided for this purpose with aswivel drive 19 for eachvacuum pipette 11, with which thispipette 11 can rotate in a controlled manner on a specified angle, for example 180° on its vertical pipette axis, in order to turncomponents 2, for example. - A rotation or swivel angle of less than 180°, for example 90°, is also conceivable for the
vacuum pipettes 11, in order to insert thecomponents 2 in thecups 6 of thebelts 7 in an orientation with respect to the longitudinal axis of the belt corresponding to the orientation of thecomponent 2 in thelead frame 1 with respect to the longitudinal axis of the lead frame. - The actuating
device 19 for the controlled turning of therespective vacuum pipette 11 consists in the depicted embodiment of aservo component 20 in the form of a pneumatic cylinder, which works between a bearing on thepusher 9 and one end of a belt orstrap 21, which is guided by abelt pulley 22 and the other end of which is connected with one end of aspring 23, the other end of which is held on thepusher 9. Thebelt pulley 22 is connected to drive therespective vacuum pipette 10 and is provided with radially extendingpins 24 that engage in perforations of thebelt 21, so as to enable defined control of the angular rotation of therespective vacuum pipette 11 on its vertical axis. - The guide and
stroke element 10 is located together with thedrum 15, the rotation or swivel drive for this drum and thedeflection pulleys 17 on a machine element orslide 25, which can move vertically up and down by a specified stroke (double arrow G), for example by means of a common drive of the overall device, whereby the drive for thedrums 15 is coordinated with this vertical stroke of theslide 25 and therefore of theguide element 10 and thepushers 9 in such a way that the horizontal stroke of thepushers 9 takes place only when theguide element 10 is raised. Below the horizontal plane of thelead frame 1 there aretappets 26, the parallel tappet axes of which are oriented vertically and which execute a tappet or stroke movement corresponding to arrow H, synchronously with the stroke of theguide element 10. Thetappets 26 are distributed diagonally to the longitudinal extension of thelead frame 1 in such a way that eachtappet 26 is arranged in the same axis with avacuum pipette 11 located in the pick upposition 4 or in the first position. - The principle of the
belt station 3 can therefore be described in detail as follows: Thevacuum pipettes 11 are in the pick upposition 4 with theguide element 10 raised vertically. Below eachvacuum pipette 11 there is acomponent 2 in thelead frame 1. By means of theslide 25 and theguide element 10 thepushers 9 and therefore thevacuum pipettes 11 are lowered so that eachvacuum pipette 11 comes to bear with the end there of thehole 11″ against acomponent 2. By applying negative pressure to thevacuum pipettes 11 by means of control valves located in the vacuum connection, therespective component 2 is fixed with the top of itshousing 2″ on thevacuum pipette 11. Thetappets 26 bear against the bottom of thehousing 2″ so that each component is held between avacuum pipette 11 and atappet 26. Afterwards, allvacuum pipettes 11 are moved vertically upward by lifting theslide 25. - The
tappets 26 follow the movement of thevacuum pipettes 11 upward as long as thecomponents 2 are being separated from thelead frame 1. The clamping of thecomponents 2 between thevacuum pipettes 11 and thecorresponding tappets 26 prevents twisting of thecomponents 2 when they are pressed out of the lead frame or upon release of the suspension noses 8 from thecomponents 2. The further lifting of theguide elements 10 causes thevacuum pipettes 11 to be raised vertically until thecomponents 2 suspended on thesepipettes 11 by means of the vacuum are at a sufficient distance from the top of thelead frame 1 and are also at a distance from the top end of thetappets 26. Afterwards, the drive of thedrum 15 is actuated for the horizontal stroke, so that thevacuum pipettes 11 are moved into theinsertion position 5, above acup 6 waiting at this insertion position. This movement takes place by means of releasing thesprings 13 and by unwinding the pullingelements 16 from theirrespective drum section 15 a-15 d. - As soon as the vacuum pipettes11 have reached the
insertion position 5, theslide 25 causes allpushers 9 and the vacuum pipettes 11 to be lowered, so that eachcomponent 2 suspended on a vacuum pipette is inserted into acup 6. After insertion of the components, the vacuum at the vacuum pipettes 11 is cut off, so that they release thecomponents 2 and are then removed from therespective cup 6 through renewed lifting of theslide 25. Driving thedrum 15 in the opposite direction causes the vacuum pipettes 11 to be returned to the pick upposition 4 in a subsequent return stroke. - The invention was described above based on a sample embodiment. It goes without saying that numerous modifications and variations are possible without abandoning the underlying inventive idea of the invention. In addition to the repair program described above, for example, it is also possible to insert the
components 2 in only one of thebelts 7 at the end of a batch, for example with theupper vacuum pipette 11 in FIG. 1, with which thecomponents 2 are then removed from each transverse row of thelead frame 1 one after the other and inserted into thecups 6 of theupper belt 7 in FIG. 1. For this purpose, the drive for thedrum 15 is designed so that the corresponding differing strokes for thevacuum pipette 11 are possible. - It was assumed above that the
drive 14 has acommon drum 15 for all pullingelements 16 andholders 11. However,separate drives 14 ordrums 15 can also be provided for theindividual holders 11 or for several groups of at least two holders each, in which case they would be able to be controlled separately. -
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- A-A, B-B line
- C lead frame feed device
- D belt feeder
- E horizontal stroke of vacuum pipette
- F swing angle
- G vertical stroke
Claims (28)
1. Device for insertion (belting) of electric components (2) stamped in a lead frame (1) into inserts or holders of at least one belt (7) on an insertion position (5) by means of at least one holder (11) movable between a pick up position (4) and the insertion position (5), characterized in that for insertion of the components directly from the lead frame (1), which has the stamped components (2) that are still held in the lead frame (1) by means of suspension elements (8) in at least two longitudinal rows extending in the direction of the lead frame, the at least one holder (11) can be moved between the pick up position (4) over one longitudinal row of components and the insertion position (5) in a first axis direction crosswise to the longitudinal extension of the lead frame (1).
2. Device as claimed in claim 1 , characterized in that the at least one holder (11) and be moved horizontally in the first axis direction (E), preferably over a plane that is formed by the lead frame (1) at the pick up position (4).
3. Device as claimed in claim 1 or 2, characterized in that the insertion position (5) is located on a longitudinal side of the lead frame (1).
4. Device as claimed in one of the foregoing claims, characterized in that the at least one belt (7) is located at the insertion position (5) with its longitudinal extension crosswise or perpendicular to the longitudinal extension of the lead frame (1).
5. Device as claimed in one of the foregoing claims, characterized in that the at least one belt (7) is located at the insertion position (5) with its longitudinal extension parallel to the longitudinal extension of the lead frame (1)
6. Device as claimed in one of the foregoing claims, characterized in that the at least one holder (11) can be moved in a second axis direction (G), which is crosswise or perpendicular to the first axis and to the plane that the lead frame (1) forms at the pick up position (4).
7. Device as claimed in one of the foregoing claims, characterized in that the at least one holder (11) is located on a slide (9), which can slide in the first axis direction guided in a second slide (10), and that the second slide (10) can be raised and lowered in the second axis direction by a drive.
8. Device as claimed in one of the foregoing claims, characterized in that several holders (11) are provided for that can be moved at least in the first axis direction (E), preferably for the simultaneous pick up of several components (2) from the lead frame (1) and for the simultaneous insertion of each of these components (2) into a respective receptacle (6) of the at least one belt (7).
9. Device as claimed in claim 8 , characterized in that the number of holders (11) is the same as the number of longitudinal rows of components (2) in the lead frame (1).
10. Device as claimed in claim 8 , characterized in that the number of holders (11) is an integral fraction of the number of the number of longitudinal rows of components in the lead frame (1).
11. Device as claimed in claim 8 , characterized in that the number of holders (11) is an integral multiple of the number of longitudinal rows of components in the lead frame (1).
12. Device as claimed in one of the foregoing claims, characterized in that the number of belts (7) is the same as the number of holders (11).
13. Device as claimed in one of the foregoing claims, characterized in that the at least one holder (11) can be moved in the first axis direction (E), controlled with a varying stroke.
14. Device as claimed in one of the foregoing claims, characterized in that the individual holders (11) can be moved at least in the first axis direction (E), each with a different stroke, from the pick up position (4) into the insertion position (5).
15. Device as claimed in one of the foregoing claims, characterized in that with several belts (7), the receptacles (6) of the belts (7) waiting at the insertion position (5) are arranged on a first common axis or line (B-B), which for example is parallel to the longitudinal extension of the lead frame (1) at the pick up position (4).
16. Device as claimed in one of the foregoing claims, characterized in that the holders (11) in the pick up position (4) are arranged on a second common axis or line (B-B), which encloses an angle smaller than 90° with the longitudinal extension of the lead frame (1) at the pick up position (4).
17. Device as claimed in one of the foregoing claims, characterized in that at least one tappet (26) provided for at the pick up position (4) can be moved perpendicularly to the plane of the lead frame (1) such that the respective component (2) to be removed from the lead frame (1) is suspended between the tappet (26) and the holder (11) during said pick up.
18. Device as claimed in one of the foregoing claims, characterized in that the holders (11) are each located on a separate first slide (9).
19. Device as claimed in one of the foregoing claims, characterized in that all first slides (9) are located on a common second slide (10).
20. Device as claimed in one of the foregoing claims, characterized in that the movement of the at least one holder (11) or the slide (9) containing this holder is effected by means of a cable, preferably against the effect of a pull-back spring (13).
21. Device as claimed in claim 20 , characterized in that the cable has at least one drum (15) driven by at least one drive motor, for example a servo motor.
22. Device as claimed in one of the foregoing claims, characterized in that with several holders (11), a separate drive is provided for each holder (11) or for each group of at least two holders (11) for the stroke in the first axis direction (E).
23. Device as claimed in one of the foregoing claims, characterized in that with several holders (11), a common drive is provided for all holders (11) at least for the stroke in the first axis direction (E).
24. Device as claimed in claim 23 , characterized in that the common drive (14) is designed for a varying stroke of the holders (11).
25. Device as claimed in one of the foregoing claims, characterized in that for the simultaneous movement of several holders (11) or the corresponding first slides (9) in the first axis direction, a separate cable (16) is provided for each holder (11) or for each slide.
26. Device as claimed in one of the foregoing claims, characterized in that for all cables (16) there is a common drum (15) with drum sections (15 a-15 d) for each respective cable, and that the drum sections (15 a-15 d) preferably have a different drum diameter for different strokes in the first axis direction.
27. Device as claimed in one of the foregoing claims, characterized in that the holders are vacuum holders or vacuum pipettes (11).
28. Device as claimed in one of the foregoing claims, characterized by an actuating device (19) for rotating or swiveling the at least one holder (11) on an axis extending parallel to the second axis.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10114717A DE10114717A1 (en) | 2001-03-26 | 2001-03-26 | Device for introducing electrical components into a belt |
DE10114717.1 | 2001-03-26 | ||
PCT/DE2002/000841 WO2002078163A2 (en) | 2001-03-26 | 2002-03-08 | Device for introducing electric components into continuous tapes |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040098951A1 true US20040098951A1 (en) | 2004-05-27 |
Family
ID=7679023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/471,754 Abandoned US20040098951A1 (en) | 2001-03-26 | 2002-03-08 | Device for introducing electric components into continuous tapes |
Country Status (5)
Country | Link |
---|---|
US (1) | US20040098951A1 (en) |
EP (1) | EP1374284A2 (en) |
AU (1) | AU2002257523A1 (en) |
DE (1) | DE10114717A1 (en) |
WO (1) | WO2002078163A2 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4119211A (en) * | 1976-10-22 | 1978-10-10 | Western Electric Company, Inc. | Method and apparatus for transferring articles while re-establishing their orientation |
US4480780A (en) * | 1981-07-29 | 1984-11-06 | U.S. Philips Corporation | Method of and device for positioning electrical and/or electronic components on a substrate |
US4561219A (en) * | 1982-12-23 | 1985-12-31 | Fuji Seiki Machine Works Ltd. | Process and apparatus for finishing electronic device |
US4610280A (en) * | 1982-11-24 | 1986-09-09 | Tdk Corporation | Method of and apparatus for supplying and transferring electronic components |
US4750263A (en) * | 1984-06-14 | 1988-06-14 | Tdk Corporation | Method of and apparatus for supplying and transferring electronic components |
US5117964A (en) * | 1989-06-10 | 1992-06-02 | Georg Sillner | Device for the insertion of elements, electric elements in particular into recesses of a belt |
US5271139A (en) * | 1989-04-04 | 1993-12-21 | Walter Sticht | Production installation |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0964067A (en) * | 1995-08-29 | 1997-03-07 | Rohm Co Ltd | Supplying apparatus for semiconductor chip to work |
DE19709022A1 (en) * | 1997-01-29 | 1998-07-30 | Georg Sillner | Device for conveying small electrical esp. surface mounted components |
NL1008018C2 (en) * | 1998-01-13 | 1999-07-14 | Fico Bv | Method and device for separating and transferring electronic components. |
-
2001
- 2001-03-26 DE DE10114717A patent/DE10114717A1/en not_active Withdrawn
-
2002
- 2002-03-08 EP EP02727200A patent/EP1374284A2/en not_active Withdrawn
- 2002-03-08 US US10/471,754 patent/US20040098951A1/en not_active Abandoned
- 2002-03-08 WO PCT/DE2002/000841 patent/WO2002078163A2/en not_active Application Discontinuation
- 2002-03-08 AU AU2002257523A patent/AU2002257523A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4119211A (en) * | 1976-10-22 | 1978-10-10 | Western Electric Company, Inc. | Method and apparatus for transferring articles while re-establishing their orientation |
US4480780A (en) * | 1981-07-29 | 1984-11-06 | U.S. Philips Corporation | Method of and device for positioning electrical and/or electronic components on a substrate |
US4610280A (en) * | 1982-11-24 | 1986-09-09 | Tdk Corporation | Method of and apparatus for supplying and transferring electronic components |
US4561219A (en) * | 1982-12-23 | 1985-12-31 | Fuji Seiki Machine Works Ltd. | Process and apparatus for finishing electronic device |
US4750263A (en) * | 1984-06-14 | 1988-06-14 | Tdk Corporation | Method of and apparatus for supplying and transferring electronic components |
US5271139A (en) * | 1989-04-04 | 1993-12-21 | Walter Sticht | Production installation |
US5117964A (en) * | 1989-06-10 | 1992-06-02 | Georg Sillner | Device for the insertion of elements, electric elements in particular into recesses of a belt |
Also Published As
Publication number | Publication date |
---|---|
AU2002257523A1 (en) | 2002-10-08 |
EP1374284A2 (en) | 2004-01-02 |
WO2002078163A2 (en) | 2002-10-03 |
WO2002078163A3 (en) | 2002-11-21 |
DE10114717A1 (en) | 2002-10-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |