SU452940A1 - Glue dispenser - Google Patents

Description

one

The invention relates to a technique for applying liquid compositions to the surface of an article.

A device for applying adhesives includes an adhesive reservoir, an adhesive application mechanism, in the casing of which there are inlet and outlet channels for plastic knitting glue and a locking organ, which is a spool mounted rotatably in the inlet

channel. Such a device is unreliable in operation, since it is possible to block the outlets with thickened glue, blocking the outlets.

The proposed device is devoid of this drawback, it differs from the known one in that the glue application mechanism is designed as a diamond-shaped attachment with a vertically positioned number of holes for glue release, and the spool is mounted for movement along the supply channel and is made with a slot for communication channel with holes for the release of adhesive or with outlet channels.

FIG. 1 shows the proposed device, a general view; in fig. 2 - the same top view; in fig. 3 is a view along arrow A in FIG. 2; in fig. 4 is a section along BB in FIG. 2; in fig. 5 is a section along BB in FIG. four; in fig. 6 shows the node T in FIG. 3 (on an enlarged scale) and a section along YY; in fig. 7 and 8 as an example are shown tanks for glue.

The device contains a tank for glue 1, divided by a partition 2 and flap 3 into two spare chambers 4 and 5 and a glue application mechanism made in the form of a diamond-shaped nozzle 6 with openings 7 dy of glue installed on the slab 8. In the mechanism case glue there are inlet 9 and outlet 10 channels, the locking body 11 (spool) is installed with the possibility of rotation and axial movement in the inlet chamber 9 and is made with a groove 12 for communication of the inlet channel 9 with outlet holes 7 or with outlet channels 10 connecting with chamber 4 through channel 13. Channel 9 communicates with cavity 14 formed in the bottom 15 of chamber 4. A screw conveyor 16 is installed in cavity 14, the drive shaft 17 of which projects beyond the end wall 18. Glue to the screw conveyor 16 flows through an opening nineteen . In the chamber 5, parallel to the conveyor belt 16. A shaft 20 is mounted to create a constant circulation of glue (as shown by the arrows in Fig. 5) in the chamber 5.

The tank 1, having a flat bottom 15, inclined towards the end wall 18 is mounted on the heating plate 21. The plate 2 can be rotated around a vertical axis.

The power of the heating plate is controlled by a thermostat 22, which enters the cavity 14 with its end. Under the heating plate 21, an electric motor 23 is placed, driving the screw conveyor 16 and the shaft 20.

The device works as follows.

The glue heated in the chambers is supplied by the screw conveyor 16 to the feed channel 9 and then through the outlets 7 to the workpiece. In this case, zopotnik 11 is installed in this way,. that the discharge channels 10 overlap, glue through the groove 12 is fed into the holes 7. By moving the spool 11 along the feeding channel 9, you can adjust the flow of glue to a greater or lesser number of outlets 7. The spool is fixed at a certain level using a locking device (not shown ). To circulate, the glue spool 11 is rotated through channel 9 by 90 ° and the inlet channel 9 is connected to the outlet channels 10. In this case, the glue is directed to chamber 4. The constant circulation of glue prevents local overheating and clogging of the outlets.

Chamber 5 is designed to pre-melt the glue. From it, the glue is supplied to the screw conveyor 16 in the event that the glue is partially consumed in chamber 4. To this end, the flap 3 is turned into the position shown by the pvuktira (see Fig. 1 and 2).

If there is no adhesive flow, then chamber 4 is increasingly filled. However, the transfer of glue over the edge of the chamber is prevented by the overflow of excess glue through the recess 24. To clean, the tank 1 can be removed from the heating plate. The rotation of the heating plate 21 is carried out for the convenience of servicing the nozzle.

FIG. Figure 7 shows a device in which the chamber 5 for pre-melting the glue is located above the upper edges of the chamber 4. The glue is supplied to the chamber 4 through the connecting channel 25 under the action of gravity. The chamber 4 is closed by a lid 26, therefore the glue in it is under some excessive pressure.

FIG. Figure 8 shows an example of the device when the chambers 4 and 5 are installed in series (at the same height), while the screw conveyor passes through both chambers and, as the glue is consumed, delivers new portions of it to the chamber 4. The devices shown in FIG. 7 and 8, work as described above.

Subject invention

An adhesive application device, including an adhesive reservoir, an adhesive application mechanism, in the housing of which adhesive and zuiff circulation channels of adhesives are made and discharge and a locking member made in the form of a spool that can be rotated in an inlet channel, characterized in that In order to increase the reliability of the device, the glue application mechanism is made in the form of a diamond-shaped nozzle with a vertically arranged row of glue outlets, and the spool is mounted for movement along the channel and is made with a groove that connects the supply channel with holes for the release of glue or tapping channels.

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