SU947932A1 - Device for sealingf articles - Google Patents

Description

The invention relates to microelectronics and can be used call-t but when protecting microelements of integrated circuits and microassemblies using a sealing coating with polymerizing materials.

A device for applying a liquid to the surface of a product along a closed contour is known, which contains a table for placing products, supply and application units for the liquid, as well as a lodgement for moving along the surface of the table with a copier that is in contact with the copier roller, which is provided with the application unit. a hollow body with a locking needle installed inside it and an annular attachment fixed in the lower part with an applied slot Cll.

The known device provides the application of liquid only on flat surfaces in a closed loop without the formation of a sealing cavity.

It is also known a device for applying a polymerizable material containing bound driven rotating head with outlet openings and connected to the head carriage mounted on the guide with possibility vozvpatno-poctsnatelnogo movement, podppyzhinenniym core mounted with clearance in the outlet head which is adapted in its bottom, and holder for fastening products.

The device makes it possible to apply a uniform layer of material of the required thickness to the outer and inner surfaces of the cylindrical articles.

The applied material in a known device is located in the cavity between the core and the head, and for applying it to the product, the relative displacement of the head and the ser.-is necessary. of the plate, in which the head must be in contact with the end face of article C2.

Claims (2)

A disadvantage of the known device is that it does not allow to apply polymerizable materials on a flat surface with the formation of a sealing cavity between the surface and the applied material, since it does not provide for the possibility of extruding the material through the gap between the head and the core without spreading the material on a flat surface. The purpose of the invention is to improve the quality of products by forming an airtight cavity with a national product. This goal is achieved by the fact that in a device for sealing products containing a head for supplying a sealing material with a cylindrical core mounted with a gap in the outlet of the head, a product holder and a drive mechanism, the product holder is mounted for rotation and permanent movement. along the axis of the outlet, and in the core there is an axial hole for the supply of protective gas. The core is rigidly fixed in the outlet of the head. At the end of the core there is a recess for accommodating the article to be sealed, which mates with the axial hole of the core. The groove is made in the middle part of the core. The product holder is provided with a fixed screw along the axis of rotation and movement of the product holder with a lead screw, kinematically connected by means of a gear-rack drive with a drive mechanism, and at the base there is a threaded hole in which the lead screw is installed. Figure 1 shows the device, a general view; figure 2 - section aa in figure 1. The device comprises a head 1 with a metering plunger 2 for supplying a polymerizable semiconductor sealant J10 material 3 and a core 4 with channels 5, rigidly fixed with the upper part in the head 1 and with a gap b in the lower part. In the core 4, a central axial opening 7 is made mating with a conical recess 8 and connected with an opening 9 in the head 1 for supplying protective hectares. The core 4 in its middle part has a groove 10 on the outer surface. A holder 11 for securing products comprises a clip 12. A gear box 13 attached to the rack 14 of the drive mechanism 15 for reciprocating movement (e.g., pneumatic cylinder) and the lead screw 16 are fixed to the holder 11. The holder 11 is mounted in the nut of the housing 17 the lead screw 16. The device operates in a slush mode. The microradio element mounted on the base 18 of division 19, for example, the microradio element mounted on the board, is fixed to the holder 11 by a clip 12 to the center of the annular gap 6. The drive mechanism 15 rotates the holder 11 through the rail 14, which rises to the head 1 with a lead screw 16. 19 is placed in the recess of the core 4. When a certain gap is reached between the base 18 and the head 1, the movement of the holder 11 stops. After that, the metering plunger 2 begins to squeeze the sealing material through the gap 6 and at the same time through the opening 7 and 9 a protective gas is supplied, the overpressure of which prevents the hollow cylinder obtained from the extruded material. In this case, the cavity formed by the head 1 and the groove 10 of the core 4 facilitates uniform pressing through the gap 6 through the material 3 passing through the channels 5. At the moment of contact of the said hollow cylinder with the base 18, the supply of protective gas is stopped and the drive mechanism 15 is turned on in the opposite direction. The holder 11 with the base 18, rotating and simultaneously lowering, pulls out and twists the hollow cylinder formed before the closing neck 20 is formed on it. In this case, a sealing cavity 21 filled with protective gas is formed above the product 19. Upon further movement of the holder 11, the closing neck 20 is broken, and the outflows of the sealing material are drawn into the gap b by the reverse movement of the plunger 2. Thereafter, the product mounted on the base with the sealing cavity obtained above it is transferred for curing. The use of the invention eliminates the direct contact of the sealing material with the product to be sealed, which increases the reliability of the product and reduces the chemical purity requirements of the sealing materials. In addition, in the manufacture of unpackaged hybrid micro-assemblies, for example, by the method of coating, the use of the invention makes it possible to eliminate the pouring of MHKptoelements by elastic sealants, which saves these materials. Claim 1. Device for sealing products, mainly radio-electronic microelements, containing a head placed on the base for supplying a sealing material with a cylindrical core installed with a gap in the outlet of the head, an article holder and a drive mechanism, characterized in that