RU2023328C1 - Magazine for microcircuits and cassette holder - Google Patents

Abstract

FIELD: machining attachments. SUBSTANCE: magazine is meant as interoperational container for storage and shipping process of manufacture of semiconductor devices. Magazine is manufactured with base provided with guiding protrusions for microcircuits and with limiting rest produced from several parts, each being located on one of guiding protrusions. Cassette holder has rectangular frame with base which opposite walls are fitted with shoulders with limiting rests made in the form of combs placed in grooves vertical with reference to frame. Frame is equipped with code plates attached in lower part of walls of frame with respect to its base. EFFECT: expanded application field. 2 cl, 6 dwg

Description

 The invention relates to tooling and may find application as interoperational containers during storage, as well as during transportation in the manufacture of semiconductor devices.

 A known design of a monolithic cartridge for microcircuits in DIP-cases, made in the form of a base with guiding protrusions, between which are located the limiters of the angle of the possible inclination of the microcircuits. The disadvantage of this cartridge is that it is made of plastic and does not have locking devices.

 Also known is the design of the holder for the stack of stores with integrated circuits, made in the form of columns mounted on the base. The columns facing each other in the indentations form the holder of several integrated circuit stores. The disadvantage of this design is that the holder can only be used to store integrated circuits.

 The closest technical solution selected as a prototype is a cassette for microcircuits with a two-row arrangement of leads, containing a base and locking U-shaped brackets covering the end faces of the base. The disadvantage of such a cartridge is that it is a combined one, and also a device is needed that removes the locking U-shaped bracket.

 The container for microchips, selected as a prototype, is made of rectangular shape from bent sheet steel with guide angles forming shelfs for cassettes, allowing them to be stacked and transported in this form.

 The disadvantages of the container for microcircuits include the implementation of it from bent steel using welding, this leads to low precision manufacturing of the container, which negatively affects its use in automatic loading and unloading devices.

 The presence of a one-sided hard stop when installed on an inclined plane does not provide fixation of the cartridges.

 The aim of the invention is the use of cassettes and cassette holders for microcircuits in automatic devices and increase reliability in operation.

 This goal is achieved in that the cassette is made of all-metal aluminum alloy having a limit stop on one side.

 And also due to the fact that in the cassette holder the limit stop is made in the form of a movable comb, locking the cassettes from two sides, which are automatically removed when it is mounted on a plane.

 Comparative analysis with the prototype shows that the proposed devices are distinguished by the presence of new elements: limiting emphasis on one side of the cassette and limiting emphasis in the form of a movable comb locking the cassettes on both sides in the cassette holder.

 Thus, the proposed device meets the criteria of the invention of "novelty."

 Comparison of the proposed solution with other technical solutions shows that the use of limit stops is known. However, their use in combination with the described embodiment of the cartridge and the cartridge holder, due to the fact that the limit stop of the cartridge holder is made in the form of a movable comb, locking the cartridge from both sides, the cartridge design allows them to be used in automatic loading and unloading devices both individually and in stacks , the design of the cassette holder allows you to automatically release the cassettes when they are installed on a plane.

 Thus, a new combination of features gives the devices new properties that can achieve a positive effect, this allows us to conclude that the proposed solution meets the criterion of "significant differences".

 In FIG. 1 shows a cassette front view; in FIG. 2 - the same, top view; in FIG. 3 is a view along arrow A in FIG. 1; in FIG. 4 - cassette holder, front view; in FIG. 5 is a view along arrow B in FIG. 4; in FIG. 6 - section bb.

 The cassette for microcircuits with a two-row arrangement of leads is made of all-metal aluminum alloy in the form of a frame 6 with guide projections 4 for placement of integrated circuits. On one side of the cassette there is a limit stop 1, which holds the microcircuit 3 when loading them into the cassette. On the guides 4 there are entrance chamfers 5, grooves 2, facilitating the loading and sliding of microcircuits along the guides.

 The cassette is mounted on the inclined plane of the loading and unloading device. At the same time, the microcircuits 6 slide under their own weight along the guides 4 to the limit stop 1. The entrance chamfers of the guides facilitate the loading of microcircuits.

 The design of the cartridges allows their use in automatic loading and unloading devices, both individually and in stacks.

 In this case, stacking is carried out by means of a cassette holder. The cassette holder consists of two walls interconnected by screeds 14. In the screeds 11 there are grooves in which the combs 10 are moved, the supports of which are centered in the bushings 8. The spring 9 springs the pin 13. The handle 7 is used to transfer the cassette holder and install it in the loading device - unloading. Code plates 15 are fixed on the cassette holder walls. Cassette 6 is mounted on ledges of the cassette holder walls. Chips in the cassette are located on the guides. The cassette is made open on one side, but the design of the cassette holder allows you to set it in the required position for loading and unloading.

 The cassette holder operates as follows. When installed on the plane, the pin 13 raises the comb 10, combining it with the ledges of the walls 11, thereby freeing the cassette for step-by-step movement. The wall 11 acts as a cutter for idle rows. When removing the cartridge holder from the loading / unloading device, the spring 9 pushes the comb down, locks the cartridge, and the pin 13 extends beyond the plane of the cartridge holder. When installing the cassette holder in the loading and unloading device, the code plate is interposed between the system of photosensors 16, which automatically register this batch of microcircuits for technological process operations.

 Stacking by means of a cassette holder locks the microcircuits from the free end of the cassette, as well as the cassettes themselves during its transfer.

 The advantage of this design is the automatic release of the cassettes when the loading / unloading device is installed on the plane, as well as the absence of a cutter for the idle rows of the cassette.

 Stacking cassettes makes it possible to conduct automated metering of microcircuits when moving them along the processing chain. The all-metal design of the aluminum alloy cassette protects the microcircuit from statistical charge, mechanical damage, and simple geometric shapes make it possible to manufacture it on CNC machines.

Claims (2)

 1. A cassette for microcircuits, comprising a base with guide protrusions for the housing of the microcircuit and a limit stop, characterized in that, in order to improve operational capabilities, the limit stop is made of several parts, each of which is placed on one of the guide ledges.  2. Cassette holder containing a rectangular case with a base and with ledges-ledges, which are equipped with limit stops, characterized in that, in order to improve operational capabilities, limit stops are made in the form of combs located in vertical grooves relative to the base, made in the walls of the case, moreover, the housing is equipped with code plates fixed in the lower part of its walls from the side of the base.

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