| 摘要 |
1,263,578. Spot-welding machine; seaming non-metallic sheet material. VIENNA BEKLEIDUNGS-UND WASCHEFABRIK G.m.b.H. 30 April, 1969 [7 Aug., 1968], No. 22088/69. Headings B5K and B5N. A spot-welding machine for thermoplastically bonding the components of interlining assemblies, the surfaces of which components are composed of thermoplastic material comprises a plurality of templates for receiving the components, means for interposing each template in turn between a pressure plate and electrically heated welding rams, means for relatively moving the pressure plate and the welding rams towards one another to apply pressure to the components received by the template whilst the template is interposed between the pressure plate and the rams, each template being adapted to the shape of the components to be received thereby and being recessed to receive said components on superposed relationship. The spot-welding machine shown in Fig. 1 comprises two endless conveyer chains 6 intermittently driven in direction A, template carriers 7 and exchangeable templates 8 mounted on the carriers and arms 10 and 11 fulcrumed on pivot pins 12 and carrying respectively a pressure plate 18 (which may be electrically heatable) and exchangeable electrically heated welding rams 19. A template 8 shown in Figs. 2 and 3 consists of two parts 8a and 8b relatively adjustable on guide rails 21, each part being in the form of a plate with recesses 22 and 23 of different depths providing several levels each of which is suitable for receiving one of the parts of a multi-layer shirt collar assembly. In operation of the machine, the templates 8 are adjusted to the desired shape by a hand wheel (not shown), the welding rams 19 and the ejectors (not shown) are set to the position of the openings 29 in the templates, the collar corner tabs 24 are inserted into the recess 23, the bonding strip 25 and possibly the collar band strip 26 into the recesses 23 and the interlining base deposited on the top of the template between the projections 28, foot pedal 32 is then operated to cause the loaded template to move to a location between the pressure plate 18 and the welding rams 19 where it is automatically stopped, the welding device then closing automatically for a time sufficient to effect bonding prior to advancing the template to the ejector device. An alternative form of template is described (Fig. 4, not shown). |
