摘要:
A hybrid die bonder has the ability to change tool holders to accommodate different die sizes. The single pick up head is selectively, magnetically, connectable to any of a plurality of tool holders. An electromagnet in the head holds a magnetic tool holder and a sealed air line is established therebetween. Prior to pick up, the head and tool holder have the same orientation so that precision locating structure therebetween will cooperate to establish a precise axis for the tool holder.
摘要:
A printing machine with several groups of rotary-screen printing units, designed to print different color components of complementary portions of a recurrent pattern on an elongate web moving continuously beneath their screens, includes a programmer such as a perforated-type reader controlling the operation of the several printing units of each group in timed relationship dependent upon the web speed. A speed changer enables the peripheral velocity of the screens to be set at values different from the web speed, the timing of the printing operations being determined by two speed sensors upstream and downstream of the speed changer. These operations include a lowering of the rotating screen onto the web at the beginning of a printing cycle, a lifting of the screen off the web at the end of a working phase of that cycle, and a stoppage of screen rotation during part of the ensuing idling phase. The stoppage is caused by the release of a normally arrested output element of a differential gearing inserted between the speed changer and the drive shaft of each screen.
摘要:
A die eject system for a hybrid die bonder, in particular an automatic hybrid die bonder, comprises a support, on which a plurality of die eject heads are mounted. The die eject heads can be sequentially indexed into an operative position. The system has the advantage that it is possible to change rapidly from one head to another, either to eject different sizes of dice or in the case of damage to a die eject needle within a die eject head.
摘要:
A nozzle of a dyestuff applicator has a cylindrical valve housing formed with an orifice obstructable by the tip of an electromagnetically displaceable needle which controls the outflow of dyestuff from a chamber in that housing. The chamber is sealed by a rubber diaphragm which is penetrated by the needle whose shaft is engaged by a pair of parallel membranes of spring steel peripherally clamped in an extension of the housing. Each membrane comprises a narrow outer ring with an inwardly projecting tongue split into two diverging branches which are interconnected at their free ends, near the diametrically opposite side of the outer ring, by a re-entrant web extending radially between these branches and terminating in an inner, needle-supporting ring concentric with the outer ring.
摘要:
The invention relates to a device for positioning electronic circuits arranged on a foil (2), such as chips (1), on a circuit card (11), ceramic substrate or the like, using the flip-chip method. The chips (1) are lifted from the foil (2) by needles (4) located under said foil and are further picked up by a needle with a suction cup (3) or by a suction cup that rotates said chips (1) by 180°. The chips are then received by another needle with a suction cup (10) and positioned on the circuit card (11) for direct connection of the contact lines. The needles (4) used for lifting the chips (1) as well as the needle with the suction cup (3) for receiving said chips (1) are capable of synchronous and mainly rectilinear or vertical displacement. The needle with the suction cup (3) is placed in a us holder (5) which is mounted in an arm (6) so as to be capable of movement, wherein said arm is driven by a drive organ (9) in order to carry out the 180° rotation movement. The additional needle with the suction cup (10) is also arranged in a holder (12) that provides it with four degrees of freedom, i.e. along the axes x, y, z and rotation.
摘要:
A die presentation package exchange system for use in a hybrid die bonder, in particular an automatic hybrid die bonder, which system comprises a magazine (10) for storing a plurality of die presentation packages (12). The system further comprises a clamp assembly (40), adapted to collect a selected die presentation package (12) from the magazine (10) and feed it to a die eject station (204) of the die bonding machine. The clamp assembly (40) is further adapted to retrieve the die presentation package (12) from the die eject station (204) after a predetermined number of dice have been ejected, and return it to the magazine (10). The magazine (10) further comprises indexing structure for indexing movement of the packages (12) within the magazine (10) so that the selected package is located at a collection point for collection from the magazine (10). The system further comprises indexing structure for indexing rotation of the clamp assembly (40) about its axis (62). The die presentation package exchange system makes it possible to change from one die presentation package to another with minimum delay, and consequently minimum loss in production time.
摘要:
A lubricating-oil pump is disclosed for a motor-driven apparatus such as a chain saw. The lubricating-oil pump delivers lubricating oil to a tool. The supply of lubricating oil from the oil pump to the tool can be interrupted. For example, in this way the flow of oil can be stopped when an accessory tool or the like is mounted on the motor-driven apparatus which requires no lubricating oil during operating.
摘要:
A call-ordering system and method enables convenient ordering in a call center transaction from a mobile phone. User profiles with identification data and a mobile phone number are matched to advertiser offers. Text messages are sent to the mobile phone numbers for matched users with a direct inward dialed (DID) number for response. Upon receiving an incoming call to the DID number from a responding user, an OfferRouter uses the caller and DID numbers to retrieve identification data for the user and offer data for the advertiser offer. The incoming call is then routed to a call center associated with the advertiser offer and the retrieved data are pushed to the call center's terminal system for pre-filling a transaction record for the offered item. The system may also be operated in tandem with a hotel guest registration system to register traveler profiles, the hotel's purchase management system to bill call center transactions to a guest's hotel bill, and the hotel's networked TV system to give guests an option to respond to an offer by using signals sent from the TV remote control unit to complete a transaction.
摘要:
A call-ordering system and method enables convenient ordering in a call center transaction from a mobile phone. User profiles with identification data and a mobile phone number are matched to advertiser offers. Text messages are sent to the mobile phone numbers for matched users with a direct inward dialed (DID) number for response. Upon receiving an incoming call to the DID number from a responding user, an OfferRouter uses the caller and DID numbers to retrieve identification data for the user and offer data for the advertiser offer. The incoming call is then routed to a call center associated with the advertiser offer and the retrieved data are pushed to the call center's terminal system for pre-filling a transaction record for the offered item. The system may also be operated in tandem with a hotel guest registration system to register traveler profiles, the hotel's purchase management system to bill call center transactions to a guest's hotel bill, and the hotel's networked TV system to give guests an option to respond to an offer by using signals sent from the TV remote control unit to complete a transaction.
摘要:
To produce a perforated metal foil, especially for use in a screen printer, a decomposable, dissoluble or vaporizable dielectric substance is deposited on a cylindrical conductive substrate in a dot pattern under the control of a photoelectrically scanned master. The spaces between the dots are then filled with an electrolytically deposited metal forming a coherent layer which is subsequently stripped off the substrate. The deposition of the dot pattern is carried out through a spray nozzle, sweeping the rotating substrate, which has an outlet in a bottom wall of a narrow space filled with the liquid dielectric to be dispensed, that space being separated by an apertured partition from an overlying plenum chamber in which the air is intermittently pressurized by an electromagnetic armature to expel a limited quantity of dielectric through the outlet; the membrane may be vibrated at supersonic frequencies to generate the necessary discharge pressure.