SU1445979A1 - Arrangement for coupling thermoplastic materials by rivets - Google Patents

Abstract

The invention relates to the welding of plastics and is intended to rivet thermoplastic materials. The purpose of the invention is to improve the performance of the device and reduce power consumption. For this, the device is equipped with a slider mounted on the rod, on which the heater holders are hinged, spring-loaded relative to the slider and extended with a curvilinear section, heater turn-on pusher and cam protrusions arranged to interact with the curvilinear sections of the holders. The slider is connected to the stem by means of a yoke, filled with protrusions for interacting with the pushers. Heaters are low inertia, 4 SP with

Description

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This invention relates to the welding of plastics and is intended to rivet thermoplastic materials.

The aim of the invention is to improve the performance of the device, and reduce power consumption.

Figure 1 shows the proposed device, a General view; figure 2 - section aa in figure 1;. on fig.Z - section bb in figure 1; in fig. 4 - the sequence of operations during operation of the device. .

A device for connecting thermoplastic materials with rivets comprises a housing 1 (FIG. O, in which a rod 2 is movably mounted with a slider 3 mounted on it and a heater 4 turning pusher 5). The rod 2 is kinematically connected with the slider 3 by the rocker 6 which interacts with its projections 7 with the pusher 4. The yoke 6 is fixed on the rod 2 by the clamp 8 (Fig. 2) installed in the semi-axes x 9 of the rocker arms 6. The guides of the semi-axes of the 9 rocker arms are the grooves 10 (Fig. 2) made in the housing 1. In the rod 2 having cam claws 11, fixed Vanes 12 for forming the closing head of the rivet, made of a material with high thermal conductivity. On the slider 3 are spring-mounted holders 13, made with curvilinear sections 14 adjacent to the cam lugs 11. In the holders 13 there are heaters 5 installed, which through connector 15 connected to the power supply unit 16. The heaters are turned on by the pusher 4 (FIG. 3), when interacting with the bar 17, the microswitch 18 contacts are closed. The heaters 5 are of low-inerdion type, for example er, in the form of a short spiral.

The device works as follows.

When the rod 2 moves down (drive not shown), the pusher 4 (FIG. 3), pressing the bar 17, closes the contacts of the microswitch 18, including the heaters 5, which, when heated together with the holders 13 fixed on the slide 3, move together with the rod 2 and the shaping punches to the rivets installed in it (FIG. 4.1). The device should be positioned relative to the rivets so that at the time of the heating of the heaters 5 to the rivets of the axle 9 of the rocker arms 6 (FIG. 2) move to the base of the grooves 10 of the housing 1. After the shutter speed required to heat the rivets (FIG. 4, II), the rod 2, with the punches 12 secured therein, moves again to the rivets to form the closing heads of the rivets, while the pusher 4 (FIG. 3 comes out of the joint with the bar 17 and the heaters are turned off. Thus, the heaters are turned on while they are riveted and riveted after heating them to the required temperature, i.e., the supply of the shaping punches to the rivets is carried out simultaneously with the heaters being retracted from the joint zone, which reduces to a minimum the time between heating and shaping of the rivets.

At the end of the rotation of the rocker arm 6, the protrusion 7 moves the pusher 4 to a position that prevents the heaters from turning on when they return to their original position. After the closing heads of the rivets are molded with a cold punch, the rod returns to its original position (Fig. 4: U). In this case, the yoke 6, whose semi-axes move in the slots 10 (Fig. 3) to the upper position, rotates around an axis, returning the heaters 5 and the heaters 4 pushers 4 to the initial position (Fig. 1).

Claims (1)

Invention Formula A device for connecting thermoplastic materials by rivets, comprising a housing with a movable rod on which the forming punches are mounted, and heaters mounted in holders, characterized in that, in order to increase the productivity of the device and reduce power consumption, the device is equipped with a slide mounted on the rod, on which it is hinged the holders of the heaters are fixed, protruded relative to the slider and extended with a curvilinear section, the heaters and the cam actuator pusher protrusions located on the stock with the ability to interact with the cryolyno is connected with the rod by means of a yoke, filled with protrusions for Heaters are made with low inertia. Fae: 2 Fi & .З //