CN1738695A - Dispensing system and method - Google Patents
Dispensing system and method Download PDFInfo
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- CN1738695A CN1738695A CN 200380108623 CN200380108623A CN1738695A CN 1738695 A CN1738695 A CN 1738695A CN 200380108623 CN200380108623 CN 200380108623 CN 200380108623 A CN200380108623 A CN 200380108623A CN 1738695 A CN1738695 A CN 1738695A
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Abstract
A system (10) and method for performing operations on a plurality of workpieces (114) comprises an operations portion (11) and a load/unload portion (101), a plurality of independently operable work heads (54) located in the operations portion, the work heads each being operable to perform work on the plurality of workpieces (114), a transfer system, the transfer system including a plurality of mounting devices (114), the transfer system being operable to deliver the mounting devices into and out of the operations portion (11) of the system.
Description
Priority request
The provisional application No.60/432 that the application requires under 35U.S.C. § 119 (e) clause associating on December 11st, 1 to submit to, 483, priority, its full content is here quoted from and is incorporated in this paper.
Technical field
Present invention generally relates to the system and method that a plurality of equipments of use in an operating point carry out multiple operation simultaneously.
Especially, the present invention relates to and be used to control equipment and the method that distribution system distributes low dose of liquid to wrap as electronic component to a plurality of substrates.
Background technology
The plurality of distribution system of current techniques is used to distribute quantitative liquid to live binding agent in various application.One of them application is the integrated circuit panel assembly.In this was used, distribution system was used in the compression integrated circuit that has compression material and uses sealant to carry out bed material and fill in the step of flip chip integrated circuit.Current technological system is used for distributing liquid epoxy or solder flux too on circuit board and integrated circuit.Liquid epoxy and solder flux are used for being connected to element on the circuit board or in the integrated circuit.
Above-described distribution system comprises those distribution systems by Speedline technology company produce and market.Under the pattern of current high density packing, inner link relevance constantly increases, and is reducing in the gap between these links simultaneously, therefore is difficult to improve the production capacity of distribution system.
In the typical distribution system, pump and distributor are installed in and are used for pump and distributor on the movable fixture (x, y z) move along three orthogonal axles under the indirect speed change gear of subsidy motor of computer system or controller control drives.Distribute drop on the assigned address of circuit board or other substrate, pump and distributor move to assigned address along the x axle and the y axle of level.Next pump and distributor drop to the mouth of pipe of pump and distributor on one above the substrate suitable distribution height along vertical z axle.Pump and distributor distribute drop, move to new position along the rising of z axle and along x axle and y axle then, and distribute next drop along the decline of z axle.The packing or the application of underfilling as described above, if pump and distributor along x axle and y axle according to the assignment of allocation path movement, pump and distributor are distributed linear material by typical control.
In some cases, the allocative efficiency of this distribution system, but through-rate restriction, specific dispensing pump device can be accurate and controlled under this speed dispensing materials drop or line.In other cases, the production efficiency of such system can be loaded into and out of machine by rate limit under such speed.Still in other cases, the production efficiency of these systems may be limited by the condition that this step requires, and for example, heated substrates arrives the specific needed time of temperature, or as is used for forming the needed time of flowing with being assigned with material in the bed material filling is used.Under all these situations and in using, for some restrictions of the production capacity of independent distribution system.
In the process of making integrated circuit, the production demand usually exceeds the production capacity of independent distribution system.For overcoming the problem of production capacity, multiple independently distribution system is used to the production capacity that realizes collective.So because used the work-yard that multiple machine cost is very high and need add, production site is conditional and very expensive to such solution usually.Because wish to reduce the size of each production system shared position in production site.
When distribution system with being assigned with device substrate or occurring at part, typically can use automatic visible system and locate and calibrate the physical location of identifying parameter in this part and this part.Variation with respect to the relative position of the coordinate system of dispensing head navigation system compensates with element to element self in permission system like this.
When using the plurality of distribution head simultaneously and reach high common production capacity, typical plurality of distribution head is arranged at the fully consistent identical task of execution on the element of abundant unanimity.But, because element itself or the slight change in the navigation system relevant, so to will independently proofreading to each of a plurality of dispensing heads with element.Because these check and correction all are independently for each dispensing head, each dispensing head all will have the independent position with respect to its substrate.
The current techniques system uses multiple independent allocation head to reach high production capacity and this technological system is U.S. Patent No. 6,007,631 exercise questions are specifically described in " bull distribution system and method ", by in this citation as a reference, and license to agent of the present invention.This distribution system uses multiple independent allocation head.Each dispensing head all is installed in independently on the navigation system and is independently working in the working region.
In addition, this system also has two conveyer lines and allows at dispensing head to being positioned at when a part on the circuit distributes, and other parts are along other circuit turnover working region.
Summary of the invention
Can further reduce the occupation of land of cost He each printing press of system for the production capacity advantage that realizes the bull distribution system and the double track conveyer that matches with it.Further be provided at circulation continuous in a collection of machine and avoid the systematically downtime, and can guarantee the quality of finished product substrate.Owing to used multiple independently dispensing head to distribute on the substrate that transmits on the ratchet by system a plurality of, embodiments of the invention further reduce occupation of land and cost with respect to prior art discussed above when having improved production capacity.Use two strip transmission lines, every line all has a track, distributes to occur in by on the first front track substrate conveying, and the ratchet on the second flank track also is equipped with substrate simultaneously, prepares for the next one distributes circulation.Owing to work is carried out continuously, ratchet all is fully continuous locating for distributing on first front rail and second flank track, has reduced downtime and the expense relevant with allocator.
Further, in some embodiments of the invention, less confined movable positioning system is used to regulate the position of substrate with respect to dispensing head.In other embodiments of the invention, less confined movable positioning system is installed between plurality of distribution head and the frame-generic navigation system.
In other embodiments of the invention, in the less confined movable positioning system one can remove from a bull and can not make its loss of generality.Because the position of each other dispensing head will be adjusted with respect to first position.Independently being adjusted at this still is used on each multiple head.
In other embodiments of the invention, the moving range of less confined movable positioning system can be prescribed enough can allow greatly dispensing pump implement the given element that is useful on or need be away from the necessary motion of part of big framework navigation system.Under these circumstances, the allocation model of each plurality of distribution head may be different from other.For the example in the application, can obtain can stopping or the request of filling that a stature is controlled to the border of distributing barrier material therein by such ability, other dispensing head is controlled in barrier material and fills out sealant with the distribution of mold filling formula simultaneously.
In some embodiments of the invention, double-strand drag conveyer and multiple ratchet loading equipemtn are combined.In such system, when these parts are removed and next to other ratchet the time, dispensing head continues to distribute being fixed on the part on the ratchet.
Embodiments of the invention are not limited to distribution system and also comprise miscellaneous equipment, and wherein multiple workbench is carried out abundant identical operations simultaneously on multiple fully identical workpiece.
The directed system that is used for implementation and operation on a plurality of workpiece of embodiments of the invention.This system comprises operation part and load/unload part, but be installed in a plurality of independence operation element platforms in the operation part, but operation element platform execution work on a plurality of workpiece, and transmission system, transmission system comprises a plurality of erecting devices, and transmission system can be used to transmit the operation part that erecting device entered and left system.In wherein a plurality of installation systems one is positioned in the operation part of system, and when a plurality of erecting devices of another one are positioned in the load/unload part of system and workpiece is controlled structure when being pulled down on by erecting device, at least one a plurality of independently workbench execution work on a plurality of elements.
Embodiments of the invention can comprise one or more in the following characteristics.
A plurality of elements can be placed on workpiece and control in the structure, and workpiece is controlled structure and is installed on a plurality of erecting devices.The load/unload part can be controlled workpiece structure and is installed in the erecting device, uses transmission system preferentially the erecting device transmission to be entered in the operation part, uses the execution work on a plurality of workpiece of independently exercisable workbench.The further operation of load/unload part is controlled structure with workpiece and is upward unloaded by one in a plurality of erecting devices.
The further embodiment of the present invention can comprise one and a plurality of following characteristics.Workpiece can be that electric substrate and workbench can be dispensing heads.Workpiece control structure can be the dish and be the dish that can keep electric substrate.Dish can be an AUER technology carrier.Erecting device can be to be used for controlling the ratchet that workpiece is controlled structure.Can carry out on the workpiece that minute qualified bedding material is filled into work on the electric substrate.Visual alignment apparatus can comprise that the independently exercisable workbench of arrangement is to a plurality of workpiece.
Embodiments of the invention further comprise the method that is used to use the equipment executable operations on a plurality of workpiece that has operation part and load/unload part; The exercisable table positions of a plurality of independences is in operation part, and workbench carries out work respectively on a plurality of workpiece; And transmission system, transmission system comprises first and second erecting devices, transmission system is used for transmitting first and second erecting devices and divides other to enter or leave the operation part of system and leave or enter the load/unload part.Transmit erecting device and enter operation part and use independently the operation element platform to be installed on first erecting device before the implementation on a plurality of workpiece workpiece being controlled structure but this method is included in.But use transmission system to move first erecting device and enter operation part, but use at least one execution work on a plurality of workpiece in a plurality of operation element platforms, use transmission system to move second erecting device simultaneously to unloading part and working as first and second erecting devices and located respectively, in operation part and load/unload part, when workpiece control structure by second erecting device on the unloading after execution work on the workpiece of first erecting device.
Embodiments of the invention further comprise the step of repetition front, for example finished workpiece control work on a plurality of workpiece of placing in the structure after, workpiece is controlled structure by unloading on the erecting device, in the approximately uniform time period, those workpiece that are not performed work are transmitted and enter the working region.
Can by describe in detail and claim in to the review of following feature, the present invention is had more fully understanding.
Description of drawings
With reference to the accompanying drawings, so that better understand the present invention, below be simple description to accompanying drawing:
Fig. 1 is the perspective view of distribution system in the one embodiment of the invention;
Fig. 2 is the distributor side perspective view of describing among Fig. 1, has shown the substrate operating system of an embodiment of the invention;
Fig. 3 is the perspective view of the frame system that uses in the one embodiment of the invention.
Fig. 3 B is the perspective view of the replaceable frame system that uses in the one embodiment of the invention;
Fig. 4 is the perspective view of distribution member in the one embodiment of the invention;
Fig. 5 is the perspective view of one embodiment of the invention technology carrier loading section
Fig. 6 is the perspective view of the technology carrier loading section that is drawn out of one embodiment of the invention technology carrier.
Fig. 7 is the top view of the distribution system of the one embodiment of the invention that shows among Fig. 1.
Fig. 8 is the alternative embodiment that the present invention has the distribution system of multiple hopper.
Detailed description of the present invention
The embodiment of the invention is can be at the bull distribution system of for example carrying out batch operation on the substrate on circuit board and the other electron component.As understood by those skilled in the art, embodiments of the invention not only are confined to distribution system, also comprise the wherein multiple workbench of other system parallel abundant uniform operation of execution on the substrate of a plurality of abundant unanimities and workpiece.The embodiment of the invention can be oriented the element place system, BGA place system, laser welding system, automatic visual inspection system and mechanical system.The embodiment of the invention is not limited to material is distributed on circuit board or the bed material filling electronic component, and embodiment is not limited to and uses multiple distribution system, and can use in single head applications.Other embodiment and step are possible and are foreseeable.
With reference to multiple allocation units in the embodiment of the invention of describing among the figure 1-3.What Fig. 1 showed is the perspective view of a plurality of distribution systems 10.Distribution system 10 comprises operating system part 11 and base plate processing system part 101, two parts are finished the transmission work by the electronic component of base plate processing system part together, partly be assigned on the electronic component in operating system, and electronic component is moved the processing substrate part.
At first specifically described is operating system part 11.Further with reference to figure 1 and relate to Fig. 2, operation part 11 comprises lower compartment 12, main system controller 14, basic framework 16, surface 18 is installed, monitor and other graphic user interface 19 and be used for the framework navigation system 28 of allocation units 54a and 54b.Allocation units 54a and 54b comprise dispense head housings 46a and 46b.Lower compartment 12 is used to deposit electronics and aerodynamic controller and main system controller 14.Basic framework 16 provides the basis for framework navigation system 28 and installation surface 18.
Framework navigation system 28 (Fig. 2) is used to move each allocation units on substrate surface independently.Frame system 28 among Fig. 2 is fully identical, but is independently, for each distributor provides self-movement.Well-known two such frame systems describing in Fig. 2 can use any amount of such frame system.What show in Fig. 3 is the expanded view and the low side perspective view of a frame system 28 among Fig. 2.Each framework navigation system comprises Y-axis localization part and X-axis localization part.The Y-axis localization part comprises linear bearings 20a and banded scale 22 of 20b line decoder and linear electrical generator magnet track 24.Framework navigation system 28 comprises framework right-angled intersection beam 48, and right-angled intersection beam 48 is by linear bearing slide block 26a, and 26b and 26c just linear bearing track 20a and 20b movably are installed in the Y-axis of basic framework 16.Linear bearing slide block 26a is installed in movably that linear bearing track 20b goes up and linear bearing slide block 26b and 26c movably are installed on the linear bearing track 20a.The Y-axis part of framework navigation system 28 further comprises encoder read head 34 and linear motor coil 36.Encoder read head is installed in and the very approaching place of the banded scale 22 of linear encoder, can read positional information therefrom.Encoder is realized its function by banded scale 22 of linear encoder and encoder read head 34, and encoder can use the different encoder system of some to implement its function, comprises those by Renishaw PLC, ofGloustershire, and 1JK makes.
The X-axis of framework navigation system 28 partly comprises dispensing head framework or vehicle frame 30a, linear bearing 32a and 32b, and linear bearing slide block 50a, 50b and 50c.Dispense head housings 30a uses linear bearing slide block 50a and 50b movably to be installed on gantry cross beam 48 and the linear bearing 32a, and uses linear bearing slide block 50c (not showing) to be installed on the linear bearing 32b.Dispense head housings 30a is driven by linear motor coil 42a.The position of dispense head housings 30a is by encoder read head (not showing) perception, and the encoder read head is structurally similar with the encoder read head 34 that is installed to Y-axis.X-axis encoder head is mounted and approaches encoder and read positional information by encoder tape scale 38.
Machine vision cameras (not showing) dispensing head 46a and 46b and allocation units 54a and 54b divide other to be installed among dispensing head framework 30a and the 30b.Dispensing head 46a and 46b are installed among dispense head housings 30a and the 30b.Dispensing head 46a and 46b provide 54a and the motion of 54b on the Z axle for dispense units/pumps.For example, dispensing head 46a and 46b can finish by many modes.Same, allocation units 54a can use a plurality of different dispensing heads or pump to finish with 54b.Allocation units and dispensing head or pump can be in U.S. Patent No. 6,395, and 334 exercise questions are to disclose in " bull distribution system and method ".Authorized the agent of the present invention can be as a reference here.
In an alternative embodiment, the plurality of distribution head is installed in the frame system, as showing among Fig. 3 B.In Fig. 3 B, be better than the independent allocation head, the dependent head of two parts is installed on the framework.Gantry cross beam device 28 comprises gantry cross beam 48, X vehicle frame 30a and 30b, allocation units 54a and 54b and dispensing head framework 46a and 46b.Vehicle frame 30a uses linear bearing slide block 50a and 50b movably to be installed on gantry cross beam 48 and the linear bearing 32a, and X vehicle frame 30b uses linear bearing slide block 52a and 52b movably to be installed on gantry cross beam 48 and the linear bearing 32a.X vehicle frame 30a uses the linear bearing slide block movably to be installed on framework 30 cross couplings 48 and the linear bearing 32b.X vehicle frame 30b uses the linear bearing slide block movably to be installed on the gantry cross beam 48 and linear bearing 32b.Share a common cover bearing rail road 32a and a 32b, common encoder tape scale 38 and common linear motor magnet track 40 with 30b.X vehicle frame 30a is driven by linear motor coil 42a.The X vehicle frame also is to be driven by the linear motor coil (not shown).The position of X vehicle frame 30a is by structurally similar and be installed to the encoder read head (not shown) perception of the encoder read head 34 of Y-axis.The position of X vehicle frame 30b is by structurally similar and be installed to the encoder read head (not shown) perception of the encoder read head 34 of Y-axis.
These X-axis encoder read heads are installed in and approach the banded scale 38 of decoder and by the banded scale 38 reading position information of decoder.Linear bearing 31a and 31b locate between distribution shell 46a and 46b and common frame system 28 provides a restricted movable positioning system between two dispensing head 54a and 54b and frame-generic system 28.Like this, comprise independent frame system in system, dispensing head 54a and 54b can regulate its position separately in Y direction and come to adapt with the position of substrate.
Be still and select among the embodiment at another, second allocation units that increase in dispense head housings can be distributed in two kinds of different materials or the allocation units by the difference configuration by given dispensing head and distribute identical materials, for example in Fig. 3 B, show, distribute from the syringe needle of two kinds of different sizes, two dispensing heads can be by being installed in the independent wide dispense head housings on each framework side by side.Can be fixed on X and the Y-axis with respect to the other side at the dispensing head on each framework.Maybe do not need to use second allocation units if preestablish, dispense head housings 46a and/or 46b can be built structure and the feature of eliminating the appearance that need offer the second selectable allocation units.
Distribute in order to reach accurately, the position of the known substrate that will be assigned with and height are of great use for allocation units before an independent allocator begins.For example, visual arranging system can be used in the allocator, can determine accurate height and position.Accurate distribution can require the epoxy of multiple approach and other material flows in the capillary under the chip and each all interconnects on chip.
If the step dish 105 of standard is installed in the dispense head housings 30a, be used for calibrating contact Z sensor.This Z sensor comprises that those belong to U.S. Patent No. 6,093,251, middle description, here do with reference.
In Fig. 4,, can see the circular cone foundation cylinder of weight scale 102 when dish is associated weight scale when being moved.Weight scale generally includes dish, or cylindrical compartment and removable lid, and these allow to distribute and enter compartment, but further can be as protector and electrostatic protection apparatus.
The weight scale system and method utilizes identical, comprise those at U.S. Patent application No.09/705,080, the present patent No. is No.6,541,063 U. S. application and U.S. Patent application, No.09/928,112, in description, here as a reference.
Pre-dispense plates 104 replaces substrate, allocates in advance like this and can implement prior to the distribution on real substrate.
Preliminary dispense step allows the situation of pin and approaches to imitate situation distributing on the real workpiece after finishing more in the special circumstances of the material of dispense needles end.Minimize variations between the product that product that preliminary dispense step will be produced earlier and back produce.Preliminary dispense step is typically to plan to be used to realize that ensuing those can change the action of the state of pin, for example distributes to enter weight scale dish or cleaning needle.Pre-dispense plates 104 can comprise being moved and is used to clean and change the ceramic insert that is used for other use.The pre-dispense plates 104 of use above one allows to increase tentatively to be distributed in prior to the operator interference and is required quantity before.
In bent needle detector can be included in as the part of stylus alignment position.Bent needle detector can have one and be attached thereto the switch that is similar to switch 101 that connects.Can on the top end surface of this switch, have a slit, when pin just can enter when being straight.If pin is if it were not for straight, just can activator switch, activator switch can carry out correcting measuring when pin is carried out suitable rectification.
Be included in the system 10 and with the system of being included in 10 in each further feature that is associated of plurality of distribution device, be mechanical visual arrangement and mechanical visual verification.
The signal of being sent by the camera that is installed on the frame system can be controlled and handle to vision processor, and the optical signal of processing can be provided for system controller.Camera can be used for: locating reference mark in order to arrange on the workpiece that order is loaded into distribution system; Be used for being assigned with the Work inspection device after perhaps other operation is performed at material; Be used for discerning the type that is loaded into the workpiece in the distribution system.
Just as mentioned, prepare to distribute to certain position for suitable transferring substrates, multiple allocation units 10 comprise base plate processing system part 101, as shown in figs. 1 and 2.Base plate processing system part 101 is prepared and transferring substrates before the operation of substrate in the operation part of allocation units 10 carried out and after work finishes.As shown in Fig. 1 and Fig. 2, base plate processing system partly comprises hopper 110, lift 112, ratchet 114a, 114b, 114c, and 114d, technology carrier 116 track 118a and 118b, pusher 120, boat shuttle 122 and overhead gripper 126.Boat shuttle comprises clamping device 124.Hopper 110 provides loading by a plurality of technology carriers 116, one of each technology carrier supported and a plurality of substrates or, a row or multi-row substrate.These technology carriers 116 may be known models, AUER technology carrier for example, or any other is appropriate to the chip that is used to distribute or the transfer device of other substrate.The hopper 110 of heap shape is installed in the position near base plate processing system part 101 front portions.The a pile hopper can comprise four hoppers 110, although a pile also can be placed more hopper 110.Selectable, can comprise in each heap being less than 4 hopper.Overlapping a lot of technology carriers 116 in each hopper the inside.For example, each hopper can comprise 5,10,12 or multiplex's carrier of planting more.Hopper 110 can move along the z direction of principal axis along the height of lift 112.The motion of hopper 110 on the z direction of principal axis allows hopper to move to certain position, and the arrangement of technology carrier level is gone by moving out or turn back in hopper 110 slits in hopper 110 slits.Lift 112 points out that technology carrier 116 can be by hopper 110 slit of shifting out and the height of following technology carrier thereafter.Lift 112 is further carried out appearance/absent variable inspection of the scanning of hopper being carried out the technology carrier.Lift 112 can move to the so all technology carriers 116 of lower position by higher position continuously can pass through sensor, shows effectively that therefore which technology carrier occurred.
With reference to figure 7, ratchet 114a, 114b, 114c and 114d lie in a horizontal plane on the track 118.Ratchet 114a and 114b are placed on the common rear track 118a, when ratchet 114c and 114d are placed on the common front rail 118b.Ratchet 118 is extended out by processing substrate part 101 and passes operation part 11.Ratchet 114a and 114b are positioned adjacent to another one in the back on the track 118a.Ratchet 114c and 114d are positioned adjacent to another one in front on the track 118b.Ratchet 114 comprises that common can being used to receives the top disc 117 of any structure substrate that will be manufactured.Top disc 117 can be by being moved on the ratchet, and the top disc of such replacement can be used to receive different substrates with the top disc 117 that has different structure.Further, in some applications, top disc can be heated.Ratchet 114 is further designed cause hopper 110 and accepts one and a plurality of technology carriers 116.In a preferred embodiment, each ratchet 114a, 114b, 114c and 114d receive two substrate process carriers 116.Show that in example each technology carrier 116 comprises three row electronic components.In these examples, on each ratchet 6 row electronic components can be arranged simultaneously.
Handle and crimping and transfer processes carrier 116 between hopper 110 and ratchet 114 with reference to figure 2,5 and 6 overhead gripper 126.Overhead gripper 126 comprises parallel limit portion dish 128, and each all has the framework that extends along the inner edge of limit portion dish 128 separately.The longitudinal edge that framework provides narrow dividing plate to be used for supporting process carrier 116 is when the technology carrier shifts out from hopper 110.Overhead gripper 114 is driven and can be moved on the receiving position of technology carrier 116 by the position of ratchet 114 tops by air force.Overhead gripper 126 does not need aerodynamic driving, but may be by servo or other driving.In addition, the parallel edges dish 128 of overhead gripper as showing among Fig. 2, has out and closes two kinds of positions, can be moved further mutually away from or near center line, increase or reduce two distances between the parallel edges dish like this.When overhead gripper 126 has been closed, the technology carrier can be pushed in two spaces between the parallel discs and be supported on the ledges, and moves along the base of parallel edges dish and transmits.
The mobile technology carrier 116 that has substrate finishes on substrate sharing out the work like this by the fixed position on the arrival of the position in hopper 110 ratchet 114 when ratchet passes distribution system.Technology carrier 116 is positioned at and controls the electronic component that preparation will be assigned with in the hopper 110.To such an extent as to being activated, propeller 120 promotes technology carrier 116 extending out by hopper 110 outer boundary technology carrier parts by hopper 110.Overhead gripper 126 is positioned on the release position of internal edge of hopper 110.Boat shuttle 122 also is positioned on the internal edge of hopper 116, uses the clamping device 124 that is installed on the boat shuttle to reach overhead gripper 126.As showing among Fig. 5, clamping device 124 is caught technology carrier 116 and withdrawal, by pulling out the technology carrier in the hopper 110 and technology carrier 116 being drawn in the overhead gripper 126 on the position.Parallel edge dish 128 portion's end within it has and stops element 129.When clamping device 124 is finished once moving of technology carrier 116 on X-axis, clamping device withstands on the position that stops on the element 129 the technology carrier remained on the overhead gripper 126, and what this sampling technology carrier 116 was pressed close to fully remains on this position.
Clamp cylinders 131 is installed on the inner surface of long parallel edges portion dish 128 of overhead gripper 126 and guarantees that technology carrier 116 is in overhead gripper 126 inside.When technology carrier 116 is safe and reliable, clamping device 124 unclamps and clamps and boat shuttle 122 returns to off-position.Home position at the technology carrier 116 of hopper 110 inside is not a factor like this, because technology carrier 116 is that be repeated and be to be positioned at the overhead gripper the inside reliably.
Use in overhead gripper by the safety technology carrier of locating, overhead gripper 126 moves to ratchet 114a from the position near hopper 110,114b, one of them top position of 114c and 114d.Overhead gripper can at first be transported the independent technology carrier 116 that is used to be placed on the ratchet 114a.For example technology carrier 116 is positioned on the ratchet and fixing controls firm being fixed on the position of the vacuum system of technology carrier in the position by one.Can select to activate or do not activate vacuum system to fix whole ratchet.Selectable, vacuum also can be applied to the special technology carrier location in other ratchet.Vacuum transducer can be positioned at ratchet 114a, on the 114b, 114c and 114d one or more.When if the part in one or several technology carrier 116 does not have to provide feedback under appearance or the inappropriate situation in position.For example, if one or several part is not placed on the appropriate location in top disc vacuum slit, the there will be air leakage in the vacuum hole.Because air-flow can lose some vacuum, sensor will detect the low vacuum level, and ratchet 114a remains on original position when removing to pull out next technology carrier 116 in the hopper 110 when overhead gripper 126 turns back to.Use above-described identical method, the second technology carrier 116 is by shifting out and use overhead gripper 126 to be transported on the second place on the ratchet 114a in the hopper 110.For the firm technology carrier is fixed on the ratchet 114a, fill ratchet 114a fully.In selectable structure, if for example technology carrier 116 each all comprise row's substrate, ratchet 114 has the space of the technology carrier 116 of arranging to surpass two.Therefore clip 126 is used to load the technology carrier 116 of the quantity of supplying with special construction as many on ratchet 114.
The shared track of ratchet 114b and ratchet 114a is as shown in Fig. 2 and Fig. 7.For example ratchet 114b and ratchet 114a are positioned adjacent one another on the rear track 118a of distribution system 10.Overhead gripper 126, the resetting step is followed the identical step that the technology carrier is placed on the ratchet 114a and is loaded the first and second technology carriers 116 to ratchet 114b.Ratchet 114a that fills and 114b carry out assigning process along the working portion that back rail 118a enters into distribution system 10.Use pneumatic actuator in the working region it to be separated as ratchet 114a and the 114b that shows among Fig. 7, the distance of separating can be adjusted.In loading station, there is not fixing space between ratchet 114a and the 114b, system more closely is provided.Ratchet is worked as the operation part that is positioned in distributor can be separated desired distance.Dispensing head can be divided to come and adjusts the distribution capability of distributor on ratchet separately by the suitable location of the distance certain with respect to the other side and ratchet 114a and 114b like this.Adjustable distance makes the loading zone domain structure compactness of distribution system 10.
When ratchet 114a and 114b enter operation part along arrow 72 indicated directions, allocation step begins.Two dispensing heads that show in Fig. 2 and Fig. 7 can move separately.Work as ratchet 114a and 114b like this and enter into distribution locations, dispensing head moves to the distribution portion edge and locates in the ratchet location.For example, dispensing head moves to the aft section of system when distributing on ratchet 114a and 114b, and when ratchet 114c and 114d were moved after dispensing head 28 distributes, distribution can generation fully simultaneously on ratchet 114a and 114b like this.Like this in the approximate time that on a collection of ratchet, has assigned, can reach the Maximum Service Limit of production capacity and distributor completely, the ratchet of other loading is moved into distributor.Allocation step is carried out in circulation.
Typically, assigning process comprises each step of using contact or noncontact height sensor to measure the height of upper surface of base plate on Z-direction, the method of use machine vision systems is determined the exact position on X and Y-axis of substrate, according to the X/Y offset correction value of any needs of accurate position calculation, and be implemented in the allocation step of the needs of describing in the pattern menu.The pattern menu provides the method for program to make by this method indication distribution system and how what material is assigned to above the substrate.
In addition, before distribution, visible system can allow multiple substrate is checked simultaneously by the arrangement inspection on the substrate in ratchet being implemented a large amount of the arrangement.Camera and other hardware can be combined into the material handling system part in the distribution system.When allocation step is carried out, use in visible system array substrate on ratchet of materials processing and prepare to distribute circulation next time.The arrangement that so just can learn each substrate with respect to it in ratchet on one's body the position of reference position originally.Arrange by before being inserted into distribution, checking, its advantage is further to improve output efficiency, visible system in the distributor, have the path of acquisition by the arrangement information in advance of materials processing acquisition, only need to check reference position on ratchet, be better than checking the arrangement benchmark of the substrate on ratchet, because the arrangement benchmark of the substrate on ratchet has a lot.In addition, can implement to distribute the back to check at the off-line camera of materials processing.
In assigning process, electric substrate receives material on ratchet 114a and 114b, and the substrate that is loaded with by additional technology carrier loads ratchet 114c and 114d.
Implementation process on by the substrate that transmits along back track 118a like this, track 118b goes up the operation loading procedure in front simultaneously, as showing among Fig. 7.In the repetition of the loading procedure on ratchet 114c and the 114d to the loading procedure on ratchet 114a and 114b.When loading has been finished, ratchet 114c and 114d cross front rail 118b and enter operation part 11 arrive distribution locations on the indicated direction of arrow 74.Finish assigning process, dispensing head moves to be repositioned at along separately frame system 28 prepares assigning process next time on the front rail.The track that ratchet 114a and 114b cross the back turns back to the resting guard in the load/unload zone in the base plate processing system along X-axis.
Ratchet 114a and 114b are prepared for unloading.Technology carrier 116 is turned back in the hopper 110 by its shift position on the 114b on ratchet 114a, and overhead gripper 126 is delivered to hopper 110 internal edges by ratchet 114a moving process carrier 116 and with it.Positioning process carrier shuttle unit 122 back into the technology carrier in the hopper 110.As showing among Fig. 6, clamping device 124 is stayed in the propelling hopper of position with the technology carrier part of sealing.Boat shuttle 122 withdrawals.Second pusher 125 is installed on the boat shuttle, extends on the position of technology carrier 116 back.Boat shuttle 122 promotes the action that technology carrier 116 enters hopper 110 near finishing for the second time.If allowing to use to have, second propeller 125 use clamping device 124 to advance the time required in the hopper 110 to compare the boat shuttle 122 of the motion process of abundant weak point fully in the technology carrier.Selectable, can use clamping device 124 that the technology carrier is advanced in the hopper 110 and do not use second propeller 125 that is installed on the boat shuttle.Technology carrier 116 is all got back in the identical hopper slit by previous processing position.Electronic component in each technology carrier is tracked by placing electronic component in identical technology carrier positions, in the identical position that is arranged in its identical hopper that moves out.
In an embodiment of the present invention, hopper has and a plurality ofly is prepared the technology carrier that is used for distributing, and lift is located hopper receiving process carrier at various height.Can select among the embodiment at one, the loading and unloading machine of continuous-flow is used to the technology carrier is inserted in the distribution system and the technology carrier is shifted out distribution system after finishing distributing.Hopper appears on the position and finishes the back in processing and restored by the separation point position.Allow blanking time between the hopper that hopper that one row are not processed and other row process.
In an embodiment of the present invention, overhead gripper be used for being transported to ratchet on by hopper the technology carrier and by ratchet to hopper.In other embodiments of the invention, if desired, overhead gripper can be suitable for changing automatically the top disc of ratchet, the operation of evolution in the improvement system like this.Further, heating is taken over a business, and if take over a business to have amount of residual heat will, taking over a business will cooling before manual the processing.Replace automatically to take over a business to save a lot of cool times by overhead gripper.
In an embodiment of the present invention, separately lift is used to mobile hopper and provides substrate to differing heights and for two dispensing heads.The selectable embodiment of the invention can comprise that second lift of the another side that is positioned at base plate processing system further provides hopper in system.Use two lifts to make the hopper quantity that can use in the system increase by one times, therefore increased the time interval between operation fully, this is the time cost of producing.
In addition, a plurality of stacks of magazines are introduced in the system, can be one, and two, three, four and more hoppers are positioned in the zone separately of this base plate processing system.In the embodiments of the invention described in Fig. 8, have double stacks of magazines, make hopper quantitatively increase the needs that also can reduce operative interventions.
In an embodiment of the present invention, lift is used for heating in advance and/or the back heating part increases output by reducing the gating process time outside mechanical process.Continuous loading equipemtn/the unloading equipment that flows of same heating can reduce circulation timei and increase output, simultaneously also by the identical heat distribution of all part experience is minimized change of program.Further, add hot elevator and continuous-flow charger permission system and monitor heating in advance and back heat time heating time.
In the diagrammatic sketch of the distribution system of describing present invention, demonstration be right hand system.System relate to pattern permission system be built as the right hand or left-hand to.The standard design permission system of system be built as the right hand or left-hand to.Any one assembly system in the both direction all should allow the user of system to reach productivity and workflow reaches optimization, so that can reach the most efficiently on the enforcing location by the material processed position being positioned at loading and unloading operations at given instrument.
In an embodiment of the present invention, the driver of some processing substrate parts in distribution system is pneumatic.Obvious servo-drive for those skilled in the art or step drive system also can be used for starting the device in the distribution system, such as high price shelf boat shuttle, hopper, and ratchet.
Described at least one embodiments of the invention at this, multiple accommodation is revised and is improved and realized by professional in this area easily, and such accommodation is revised and improvement all comprises within the scope of the invention.Therefore, aforesaid description only is an example, and does not mean that restriction.Scope of the present invention only is subjected to the qualification of following claims and equivalent thereof.
Claims (57)
1. system that is used for implementation and operation on a plurality of workpiece, this system comprises: operation part and load/unload part;
But be arranged in the more than one independence operation element platform of operation part, workbench is implementation on a plurality of workpiece respectively;
Transmission system, transmission system comprise more than one erecting device, and transmission system can be used to transmit installation system and enters and leave system's operation part,
More than one workpiece is placed on workpiece and controls in the structure, and workpiece is controlled structure and is installed on the more than one erecting device;
The load/unload device is controlled structure with workpiece and is loaded on one of them erecting device, and erecting device enters operation part by transmission system then, but uses the implementation on a plurality of workpiece of independent operation element platform;
The load/unload part is used for that further workpiece is controlled structure and upward unloads by one in a plurality of erecting devices,
But in wherein a plurality of erecting devices one is positioned at the operation part of system and by at least one implementation on workpiece in a plurality of independence operation element platforms, and workpiece is controlled structure and unloaded on by erecting device when in a plurality of erecting devices another is positioned at the load/unload part of system.
2. according to the system described in the claim 1, wherein workpiece is that electric substrate and workbench are the dispensing heads that is used for dispensable materials on electric substrate.
3. according to the system described in the claim 1, wherein to control structure be that dish and this dish are used for controlling electric substrate to workpiece.
4. according to the system described in the claim 3, its mid-game is an AUER technology carrier.
5. according to the system described in the claim 1, wherein erecting device is to be used to control the ratchet that workpiece is controlled structure.
6. according to the system described in the claim 5, wherein ratchet comprises movably, and takes over a business and is built and arrange the workpiece that is used to accept different size.
7. according to the system described in the claim 6, further comprise being used for clamping and move the top clip from ratchet.
8. according to the system described in the claim 5, wherein ratchet comprises vacuum plant, and vacuum plant is built and arranged firm being fixed on the ratchet of workpiece grasping device.
9. the system described in according to Claim 8 further comprises being used to survey the detector that on ratchet level of vacuum is measured the existence of workpiece.
10. according to the system described in the claim 2, be on electric substrate, to distribute the bottom filler wherein in the work of implementing on the workpiece.
11. according to the system described in the claim 1, the work of wherein implementing on workpiece comprises picks up and puts down operation.
12. according to the system described in the claim 1, the work of wherein implementing on workpiece comprises the inspection step.
13. according to the system described in the claim 1, the work of wherein implementing on workpiece comprises the laser weld of workpiece.
14. according to the system described in the claim 1, wherein each workbench of operating separately comprises that further visual collating unit is used for arranging the workbench of independent operation to a plurality of workpiece.
15. according to the system described in the claim 1, wherein erecting device comprises that visual alignment apparatus is used to arrange workpiece to erecting device.
16. according to the system described in the claim 1, wherein transmission system comprises the jacking system that is used to control a plurality of erecting devices.
17. according to the system described in the claim 16, further comprise a plurality of hoppers that are installed in the jacking system, wherein each hopper before erecting device is loaded into the working region and erecting device by the working region in unloading back receive erecting device.
18. according to the system described in the claim 17, wherein hopper is heated.
19., further comprise at least two jacking systems that are used to control a plurality of erecting devices and are used for the fully continuous a plurality of erecting devices of transmission according to system described in the claim 16.
20. according to the system described in the claim 16, wherein jacking system comprises the sensor of the erecting device position that is used for indicating jacking system.
21. according to the system described in the claim 1, wherein the load/unload part further comprises the conveyer system that is used for fully being loaded into the workpiece of operating area continuously and unloads the workpiece that leaves operating area.
22. according to the system described in the claim 21, wherein conveyer system is heated.
23. according to the system described in the claim 2, wherein dispensing head comprises and is used for solder flux is distributed in pin on the workpiece.
24., further comprise being used to measure the pin measuring appliance of the pin of each plurality of distribution head with respect to the workpiece height according to the system described in the claim 23.
25. according to the system described in the claim 24, wherein the pin measuring appliance comprises bent needle detector.
26., further comprise the weight meter that is used to measure the weight that is assigned to the material on the workpiece according to the system described in the claim 2.
27., further comprise being used on workpiece, receiving the predistribution dish that some is distributed in the material on the workpiece before the operation in beginning according to the system described in the claim 26.
28. according to system described in the claim 1, implementation on the exercisable workbench of wherein a plurality of independences in a plurality of workpiece.
29. method of on a plurality of workpiece, using the equipment implementation and operation that has operation part and load/unload part;
But a plurality of independence operation element platforms are positioned at operation part, implementation on each comfortable a plurality of workpiece of workbench;
Transmission system, transmission system comprise first and second erecting devices, and transmission system is discriminable to be used for transmitting first and second erecting devices and to enter and leave the operation part of system and leave and enter the load/unload part;
A plurality of workpiece are placed on workpiece and control in the structure, and workpiece is controlled structure and is installed on first and second erecting devices;
Load/unload can be used to that partly workpiece is controlled structure and is loaded on the erecting device and with workpiece and controls structure by unloading on the erecting device, and this method comprises:
(a) make independent exercisable workbench before implementation on a plurality of workpiece the erecting device transmission being entered operation part, workpiece is controlled structure be installed on first erecting device;
(b) but use transmission system to move first erecting device to enter operation part by at least one implementation on a plurality of workpiece in a plurality of operation element platforms;
(c) use transmission system to move second erecting device and enter the unloading part;
(d) when first and second erecting devices are located respectively, in operation part and load/unload part, when workpiece is controlled structure by second erecting device in implementation on the workpiece of first erecting device during unloading.
30. according to the method described in the claim 29, wherein step (a) further comprises: workpiece is controlled structure shift the part extended position onto;
The workpiece that grip portion stretches out control structure and
Workpiece is controlled structure to be moved being used on the erecting device to and transmits the position that enters operation part.
31., further be included in and move first erecting device and heat first erecting device before entering operation part according to the method described in the claim 29.
32. according to the method described in the claim 29, further comprise repeating step (a), (b) and (c) like this finished be included in workpiece and controlling work on a plurality of workpiece in the structure after, workpiece is controlled structure by unloading on the erecting device, in the similar time period, there is not processed workpiece to be passed to operation part.
33. an equipment that is used for implementation and operation on a plurality of workpiece comprises:
Operation part and load/unload part;
Be arranged in a plurality of independently exercisable workbench of operation part, each workbench can implementation on a plurality of workpiece; With
Transmission system, transmission system comprise a plurality of erecting devices, and transmission system is used for transmitting the operation part that erecting device entered and left system,
Wherein a plurality of workpiece are placed on workpiece and control in the structure, and workpiece is controlled structure and is installed on a plurality of erecting devices, and
But in a plurality of erecting devices one is positioned in the operation part of system and by at least one implementation on a plurality of workpiece in a plurality of independence operation element platforms, and another in a plurality of erecting devices is positioned at the load/unload part of system and workpiece and controls structure and got off by unloaded on the erecting device simultaneously.
34. according to the equipment described in the claim 33, wherein a plurality of workpiece are that electric substrate and workbench are dispensing heads.
35. according to the equipment described in the claim 33, wherein workpiece control structure be the dish and this dish be used for controlling electric substrate.
36. according to the equipment described in the claim 33, wherein erecting device is to be used to control the ratchet that workpiece is controlled structure.
37. according to the equipment described in the claim 36, wherein ratchet comprises interchangeablely taking over a business, each is interchangeable takes over a business to be built and arrange a plurality of workpiece that are used for receiving different size.
38. according to the equipment described in the claim 36, wherein ratchet comprises vacuum plant, vacuum plant is built and is arranged as controls structure with workpiece and is fixed on the ratchet.
39., further comprise being used to survey the detector that level of vacuum on the ratchet is determined at the appearance of one of a plurality of workpiece on the ratchet according to the equipment described in the claim 38.
40. according to the equipment described in the claim 35, wherein multiple independent allocation head is installed on the common framework.
41. according to the equipment described in the claim 40, one of wherein multiple independent allocation head distributes first pattern to distribute second pattern to electric substrate with another a plurality of independent allocation heads to electric substrate.
42., further comprise the visual arranging system that is used in the working region, arranging workbench and a plurality of workpiece according to the equipment described in the claim 33.
43., further comprise the pin measuring appliance with respect to the height of a plurality of workpiece of the pin that is used to measure on each plurality of distribution head according to the equipment described in the claim 33.
44. according to the equipment described in the claim 43, wherein the pin measuring appliance comprises bent needle detector.
45., further comprise the weight meter that is used to measure the weight that is assigned to the material on the workpiece according to the equipment described in the claim 33.
46., further comprise being used on workpiece, receiving the predistribution dish that some is distributed in the material on the workpiece before the operation in beginning according to the equipment described in the claim 33.
47. according to the equipment described in the claim 33, wherein transmission system comprises that at least one has erecting device to be positioned at wherein hopper, hopper comprises that erecting device can be from wherein shifting out and can turn back to a plurality of shelfs wherein.
48. according to the equipment described in the claim 47, wherein at least one hopper comprises and is used for responding to the sensor that the position appears in hopper erecting device.
49. according to the equipment described in the claim 33, the work that wherein is implemented on a plurality of workpiece is included in distribution bottom filler on the electric substrate.
50. according to the equipment described in the claim 33, wherein the work of implementing on a plurality of workpiece comprises and picks up and put down operation.
51. according to the equipment described in the claim 33, wherein the work of implementing on a plurality of workpiece comprises the inspection step that is used to check a plurality of workpiece.
52., wherein be included in laser weld step on a plurality of workpiece in the work of implementing on a plurality of workpiece according to the equipment described in the claim 33.
53. an equipment that is used on a plurality of workpiece implementation and operation comprises operation part and load/unload part, operation part comprises frame system.
But a plurality of operation element platforms are connected with frame system, and workbench is implementation on a plurality of workpiece respectively; With
Transmission system, transmission system comprise a plurality of erecting devices, and transmission system is used for transmitting the operation part that erecting device entered or left system,
Wherein a plurality of workpiece are placed on workpiece and control in the structure, workpiece control that structure is installed on a plurality of erecting devices and
But in a plurality of erecting devices one is positioned in the operation part of system and by at least one implementation on a plurality of workpiece in a plurality of operation element platforms, and a plurality of erecting devices are positioned at load/unload part in the system and work and control structure and got off by unloaded on the erecting device simultaneously.
54. according to the equipment described in the claim 53, but wherein each a plurality of operation element platform can be implemented independent operation on one in a plurality of workpiece.
55. according to the equipment described in the claim 53, wherein a plurality of workpiece are that electric substrate and workbench are dispensing head.
56. according to the equipment described in the claim 53, wherein workpiece control structure be the dish and this dish be used to control electric substrate.
57. according to the equipment described in the claim 53, but wherein each a plurality of operation element platform is moving implementation and operation on the next part at a plurality of workpiece separately on the Y direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43248302P | 2002-12-11 | 2002-12-11 | |
| US60/432,483 | 2002-12-11 | ||
| US10/661,830 | 2003-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1738695A true CN1738695A (en) | 2006-02-22 |
Family
ID=36081166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200380108623 Pending CN1738695A (en) | 2002-12-11 | 2003-12-11 | Dispensing system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1738695A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529424A (en) * | 2010-12-25 | 2012-07-04 | 富葵精密组件(深圳)有限公司 | Automatic spray printing machine |
| CN105793973A (en) * | 2013-11-14 | 2016-07-20 | 伊利诺斯工具制品有限公司 | Dispensing apparatus having transport system and method for transporting a substrate within the dispensing apparatus |
-
2003
- 2003-12-11 CN CN 200380108623 patent/CN1738695A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529424A (en) * | 2010-12-25 | 2012-07-04 | 富葵精密组件(深圳)有限公司 | Automatic spray printing machine |
| CN105793973A (en) * | 2013-11-14 | 2016-07-20 | 伊利诺斯工具制品有限公司 | Dispensing apparatus having transport system and method for transporting a substrate within the dispensing apparatus |
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