Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Means joining flexible indefinite length or endless bodies...
Patent
1987-01-15
1989-09-19
Wityshyn, Michael
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Means joining flexible indefinite length or endless bodies...
1563042, 1563046, 156499, B29C 6520, B30B 1504
Patent
active
048678350
ABSTRACT:
A waterstop splicing method and apparatus including a table having first and second coplanar aligned table top surfaces that simultaneously and equally, open and close by mechanical means driven by adjustable compression springs which provide equal forces to both tops. The table is equipped with two identical clamping arm assemblies in proximate relation to the facing edges of the two table surfaces, with one clamping arm assembly for each side, each of the clamping arm assemblies being provided with a bar having slidably and lockably assembled thereon a plurality of clamp devices, which are individually adjustable for pressure, width and cross-section of the waterstop strips for enabling securing of a waterstop to the table at any desired angle without puncturing. A removable recessed channel is provided in the middle of the table for supporting a thermoplastic welding iron having opposing heated parallel surfaces for simultaneously contacting the ends of a pair of aligned strips. The iron is moved along the channel to a point which centrally intersects the adjacent ends of the waterstop, whereupon the ends are brought into contact with the iron which remains stationary until the melting process is complete. Then, the table tops are separated and the iron is moved along the channel out of the way during the welding process. The recessed channel keeps dirt and debris from entering the weld area and allows the excess melted thermoplastic material, when compressed, to uniformly squeeze out of the weld area around the joint forming a void free monolithic weld throughout the web of the waterstop.
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