Apparatus for applying welting to a shoe component |
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| 申请号 | US37450873 | 申请日 | 1973-06-28 | 公开(公告)号 | US3824643A | 公开(公告)日 | 1974-07-23 |
| 申请人 | BOSTON MACHINE WORKS CO; | 发明人 | DECOULOS J; | ||||
| 摘要 | Continuous welting, in sequence, is wetted with cement which is dried to provide a bonding stratum, is metered out to provide slack increments each equal in length to the perimeter of a shoe component, is advanced together with the perimeter of the shoe component through the nip between a pair of pressure applying wheels, is heated at the nip to reactivate the bonding stratum which causes the welting to adhere to the perimeter of the shoe component, and is severed at incremental demarcations. The wheels are designed specifically to advance the marginal edge of the shoe component and the welt through the nip and to apply pressure across any cross-sectional portion in the nip notwithstanding differences in the peripheral thicknesses of the shoe component. | ||||||
| 权利要求 | 1. An apparatus for applying welting to a shoe component, said apparatus comprising a base, a supply spool on said base for a length of said welting, a cement applicator on said base for applying cement to a surface of said welting, a dryer on said base for drying said cement on said surface to provide a coating, a slack regulator on said base for metering predetermined increments of said welting, a drive wheel and an adaptor wheel on said base defining a nip therebetween, a heater at said nip to activate portions of said coating as said welting advances in said nip, and a knife on said base for severing said welting at said nip. 2. The apparatus of claim 1, wherein said heater directs hot air to said coating. 3. The apparatus of claim 1 wherein said drive wheel has a knurled periphery. 4. The apparatus of claim 1 wherein said adaptor wheel is larger than said drive wheel in diameter. 5. The apparatus of claim 1 wherein the axis of said drive wheel is fixed with respect to said base and the axis of said adaptor wheel is movable with respect to said base in order to permit adjustment of the size of said nip. 6. The apparatus of claim 1 wherein the axis of said adaptor wheel is resiliently biased toward the axis of said drive wheel. 7. The apparatus of claim 1 wherein said adaptor wheel is driven. 8. An apparatus for applying welting to a shoe component, said apparatus comprising a base, a supply spool on said base for a length of said welting, a cement applicator on said base for applying cement to a surface of said welting, a cement applicator on said base for applying cement to a surface of said welting, a dryer on said base for drying said cement on said surface to provide a coating, a slack regulator on said base for metering predetermined increments of said welting, a drive wheel and an adaptor wheel on said base defining a nip therebetween, a heater at said nip to activate portions of said coating of cement as said welting advances in said nip, and a knife on said base for severing said welting at said nip, aaid knife being reciprocable between an operative position at which it severs said welting and an inoperative position at which it is remote from said welting, a link having a pivot at one end thereof, said link having a journal at the other end for said adaptor wheel, said pivot having a first shaft having an axis that is fixed with respect to said base and a second shaft having an axis about which said adaptor wheel rotates, a first gear keyed to said first shaft and a second gear keyed to said second shaft, a chain meshing with said first gear and said second gear, said drive wheel being journaled on a third shaft, having an axis fixed with respect to said base, and an electric motor, said electric motor driving said first shaft and said third shaft, whereby a shoe component between in the nip between said drive wheel and said adaptor wheel is gripped therebetween and advanced therealong in order that variable thicknesses of the shoe component cause separation of said adaptor wheel from said drive wheel while maintaining advancement of the perimeter of said shoe component through said nip. 9. The apparatus of claim 8 wherein the diameter of said drive wheel is less than one-tenth the diameter of said adaptor wheel. |
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