摘要:
The invention relates to a mould part of a mould for encapsulating electronic components mounted on a carrier, comprising at least one mould cavity provided in said mould part and at least one runner for moulding material connecting to said mould cavity, wherein the gate from said runner to said mould cavity has an oblong shape. The invention also relates to a mould with at least one such mould part. The invention also provides a method for encapsulating electronic components mounted on a carrier, wherein the liquid moulding material is fed into the mould cavity through a wide supply opening. Finally, the invention also provides an encapsulated electronic component mounted on a carrier, which component is manufactured by this method.
摘要:
The invention relates to a method for removing from a carrier part with a housing arranged thereon, which carrier part contains openings on the side of the carrier remote from the housing which are filled with encapsulating material, wherein the carrier is engaged on two sides by cutting elements provided with at least one cutting edge, which cutting elements are subsequently moved toward each other such that the carrier part is separated from the remaining part of the carrier, characterized in that before the separation takes place the cutting edge projecting relative to a base of the cutting element is urged into the carrier such that the carrier deforms permanently. The invention also relates to a thus manufactured product and to an apparatus for mechanically performing the method.
摘要:
The invention relates to a device for separating and transporting moulding materials from a feed path to a discharge position comprising at least one holder for a moulding material part movable rotatably between a position close to the feed path and the discharge position, and an ejector for discharging a moulding material part arranged in the holder from the movable holder close to the discharge position. The invention also relates to a device for grouping, positioning and transporting singly supplied moulding materials from a loading position to an offloading position. The invention furthermore relates to a method for encapsulating electronic components by loading a mould half at a fixed position with singly supplied moulding materials.
摘要:
Apparatus for encapsulating products, for instance encapsulating lead frames with epoxy resin, wherein the apparatus comprises:
one or more pressing devices for encapsulating the products at increased pressure and/or temperature; a first carriage device for transferring the products from supply means to the pressing device; and a second carriage device for discharging the encapsulated products from the pressing device to discharge means, wherein the first and second carriage are guidable along collective guide means.
摘要:
The leads of a lead frame on which an encapsulated chip is placed are bent by placing them in a mould and subsequently bending them with a bending tool in the form of a cylinder-like roller rotatable round a rotating shaft. Because the roller rolls off over the leads, scraping off of solder onto the leads is prevented during bending. In view of its length the mounting of such a roller causes problems, such as sagging. This is resolved according to the invention by providing the roller on the periphery with slot-like recesses for passage of a bearing for the rotating shaft.
摘要:
Electronic components, chips, are moulded in a single-strip moulding apparatus. The products to be moulded are placed in a mould consisting of two halves, one of the halves whereof displays recesses for receiving a component, which half is connected via a channel with a cavity for receiving a quantity of moulding material. For exerting pressure on the moulding material in the recesses a plunger which is driven by means of an electromotor, a screwed rod and a nut arranged on the screwed rod is used.
摘要:
The invention relates to a system for dosed conveying and selecting of pellets for a moulding apparatus for lead frames, with which it is possible to prevent crumbled pellets or fragments and/or dust thereof being able to reach the moulding apparatus arranged in a so-called clean room. For this purpose the system has means for successively conveying pellets one by one, means for selecting to length and feeding pellets to a transporting path, means for reducing the transporting speed of conveyed pellets, means for separating the pellets one by one and tranferring the pellets to a transport carrier, and means for transferring pellets from the transport carrier to a conveying device to a mould of a moulding apparatus.
摘要:
The invention relates to a method and a device for placing electronic components ordered in a matrix structure onto a flat carrier, comprising of picking up components ordered in accordance with a matrix structure and placing the components on the flat carrier, wherein the components are picked up in a group of components comprising subgroups and the components are placed successively per subgroup onto the flat carrier. Means are hereby provided with which numbers, pitch or orientation of groups of electronic components, in particular though not exclusively semi-conductor products, can be modified. Placing the components per subgroup moreover creates the freedom to place the subgroups on different carriers.