SU791665A1 - Mandrel-holder for hermetizing gas-filled instruments - Google Patents

Description

The invention relates to the building materials industry, in particular to the field of heat treatment of glass and can be used at enterprises of the electro-vacuum industry in the production of electro-vacuum devices (EEC), headlamps.

Of the known mandrels closest to the claimed technical solution is a mandrel-holder for sealing gas-filled devices, comprising a housing with holes for conclusions and a central hole for the ram [17.

The disadvantage is the lack of a working belt machined to the dimensions of the finished product and being a copier for the press roller, which makes it difficult to obtain products with a given size.

In addition, the mandrel is rigidly connected to the spindle and has a rotation 'at all positions of the brewing machine.

The purpose of the invention is to obtain products with a given size and improve their quality.

This is achieved by the fact that the mandrel holder for sealing gas-filled devices, comprising a housing with holes for leads and a central 30 hole for the ram, is made with a groove and a working belt in the upper part of the housing and with holes for orientation and landing of the mandrel in the lower part of the housing, while the working belt is processed to the size of the finished product.

In FIG. 1 depicts a proposed holder holder; in FIG. 2 - weld 10 ka lamp-headlights.

The mandrel holder is a cast structure made in the shape of the workpiece and having a groove 1 for fixing the product, 15 a seating surface 2 for placing the mandrel holder on the bracket 3, holes 4 for the alignment pins 5, a mounting hole 6 for the head 7 of the spindle, holes 8 for 20 drive pins 9 of the head 7 of the spindle.

In the mandrel holder there are openings 10 for conclusions 11 of the product, a central opening 12 'for the ram 25 13 and the belt 14, on which the rolling roller 15 is rolled.

The proposed mandrel holder works as follows.

A reflector 17 of the headlamp lamp with a diffuser 18 is inserted into the cast-iron mandrel holder 16 and guided by the protrusions 3 in the grooves 1 of the headlamp with a diffuser 18. The brace holder 16 is mounted on the alignment pins 5 of the bracket 3 and is fed into the heating furnace 19. After heating, the mandrel holder with the workpieces enters the welding position, where, using the movable rod 20 of the spindle 21, it is removed from the alignment pins 5 of the bracket 3 and rises to the plane of the burners 22, the rotation of the spindle 21 with the mandrel holder 16 s mounted on its upper end is turned on blanks. The workpieces are welded and rolled by the roller 15 of the weld. At the end of the welding, the spindle rotation is stopped in an oriented position relative to the alignment pins 5 of the bracket 3 using the rocker mechanism. The movable rod 20 of the spindle 21 is lowered to its lowest position, the mandrel holder 16 with welded blanks is mounted on the orientation pins 5 of the bracket 3 and translation carousels. The welded headlamp at the preliminary annealing position is annealed with a soft flame of gas-air burners. The pre-annealed lamp-headlight ’is transferred to the conveyor belt of the annealing furnace, where the final stress relief in the glass is performed. Temperature control in the heating furnace is carried out using a thermocouple.

Thus, the proposed mandrel holder is fixedly fixed on the bracket and can be easily removed. The mandrel holder is kinematically connected to the spindle only at the infusion position. The presence on the mandrel-holder of a working belt, machined to the dimensions of the finished product and being a copier for the press roller, allows. receive products with a given size.

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Claims (1)

In the slots 1, the reflector 17 of the headlamp with a diffuser 18, the Zaprika-holder 16, is mounted on the orienting pins 5 of the bracket 3 and is fed to the preheating furnace 19. After heating, the mandrel holder with workpieces comes to the position of welding, where with the help of a movable rod 20, spindle 2 is removed from the orienting pins 5 of the bracket 3 and rises to the plane of location of the burners 22, the rotation of the spindle 21 with the frame installed at its upper end holder 16 with blanks. Welding of the workpieces and stitching with the roller 15 of the weld is carried out. At the end of welding, a stop is made. rotation of the spindle in an oriented position relative to the orienting pins 5 of the bracket 3 by means of a rocker mechanism. The movable rod 20 of the spindle 21 is lowered to its lowest position, the mandrel holder 16 with the welded workpieces is mounted on the orienting pins 5 of the bracket 3 and the carousel is translated. The welded headlight lamp at the position of preliminary annealing is annealed by a soft flame of air-gas burners. The pre-annealed headlamp is rearranged to the conveyor belt of the annealing furnace where the final stress relief in the glass is performed. Temperature control in the preheating furnace is carried out using a thermocouple. Thus, the proposed mandrel holder is fixed on the bracket and easily removed. The mandrel holder is kinematically connected with the spindle only at the welding position. The presence on the mandrel-holder of a work roll, machined to the dimensions of the finished product and being a copier for a stitching roller, allows to obtain products with a given size. Formula of the invention Mandrel-holder for sealing gas-filled devices, comprising a housing with holes for leads and a central hole for shtagel, characterized in that, in order to obtain products of a given size and increase their quality, the upper part of the body and with holes for orientation and on the set of the mandrel in the lower part of the body, while the worker is processed to the size of the finished product. Sources of information taken into account in the examination 1. USSR author's certificate in application No. 2328865 / 29-33, cl. From 03 To 23/20, 1976.