Lasting Pincers/Grippers

Lasting pincers/grippers are precision components of the Multi-axis Lasting Station designed to securely grip shoe uppers and hold them in position while the lasting machine forms the upper around the last. They provide controlled tension and positioning during the critical lasting phase where the upper material is stretched and attached to the insole. These components are engineered for the demanding environment of leather and related product manufacturing, where consistent grip and precise manipulation are essential for achieving uniform results. The pincers/grippers are available in configurations that accommodate various upper thicknesses and widths, with jaw openings ranging from 20 to 60 mm and jaw widths from 30 to 80 mm. The overall length of 200 to 350 mm affects reach and ergonomics, while the weight of 0.5 to 1.5 kg is designed to reduce operator fatigue. Operating pressure should be maintained between 1.0 and 1.6 MPa. Gripping force ranges from 500 to 1500 N, suitable for lasting operations on leather uppers. The components are made from tool steel or hardened alloy steel, with durable polymer grips, and the specified material is C45 carbon steel for durability. Surface hardness is 45 to 55 HRC to ensure wear resistance, and the surface treatment is zinc-plated for corrosion protection. Operating temperature range is -10 to 60 °C; outside this range may affect grip material. These pincers/grippers are designed for use in multi-axis lasting stations, where their multi-axis movement capability allows for complex manipulation of the material. They operate through pneumatic or mechanical actuation, opening and closing with precise force to grip the upper at specific points. During the lasting process, they apply controlled tension while the machine performs pulling, folding, and tacking operations. For procurement, it is essential to verify model-specific values and standards with the legal manufacturer or supplier, as the listed parameters are reference ranges. The standards mentioned (DIN EN 10083, DIN EN ISO 6508, DIN 50979) serve as verification references, not proof of certification. Regular inspection of grip surfaces and actuation mechanisms is recommended to maintain performance. Failure to maintain proper operating pressure or temperature can lead to insufficient grip or material damage. Always confirm compatibility with your specific lasting machine and upper materials.

The pincers/grippers operate through pneumatic or mechanical actuation to open and close with precise force. They grip the shoe upper material at specific points, applying controlled tension while the lasting machine performs pulling, folding, and tacking operations. Their multi-axis movement capability allows for complex manipulation of the material during the lasting process.