초록 ▼

End-to-end joining of sleeves. A first glue strand is applied to the end joint surface of one of the sleeves, the first glue strand having properties that cause an immediate fixing of the end joint surfaces of the sleeves. A second glue strand is applied to the end joint surface of one of the sleeve

End-to-end joining of sleeves. A first glue strand is applied to the end joint surface of one of the sleeves, the first glue strand having properties that cause an immediate fixing of the end joint surfaces of the sleeves. A second glue strand is applied to the end joint surface of one of the sleeves, the second glue strand having properties that causing wetting of the sleeve material in the joint surface and its immediate vicinity. The end joint surface of a first one of the sleeves is positioned against the end joint surface of a second one of the sleeves so that the first glue strand causes an immediate fixing of the end joint surfaces, and the second glue strand is allowed to set. The apparatus includes alignment devices for positioning the sleeves adjacent glue nozzles and for positioning the sleeves in end-to-end contact.

대표청구항 ▼

The invention claimed is: 1. A method of end-to-end joining of two cylindrical sleeves, each cylindrical sleeve having an outer cylindrical surface and an inner cylindrical surface and including an end joint surface on the end of such cylindrical sleeve, said method comprising: applying a strand of

The invention claimed is: 1. A method of end-to-end joining of two cylindrical sleeves, each cylindrical sleeve having an outer cylindrical surface and an inner cylindrical surface and including an end joint surface on the end of such cylindrical sleeve, said method comprising: applying a strand of a first glue to at least a part of the width of the end joint surface of one of the cylindrical sleeves, the first glue having properties that cause fixing of the end joint surfaces of the sleeves within a first time period; and applying a strand of a second glue to at least a part of the width of the end joint surface of one of the cylindrical sleeves, the second glue having properties that causing wetting of the sleeve material in the joint surface and its immediate vicinity; positioning the width of the end joint surface of a first one of the cylindrical sleeves against the width of the end joint surface of a second one of the cylindrical sleeves so that the first glue strand by itself causes fixing of the end joint surfaces within the first time period; and allowing the second glue strand to set by itself within a second time period, longer than the first time period. 2. A method according to claim 1, wherein the first glue comprises a melt glue. 3. A method according to claim 1, wherein the second glue comprises a dispersion glue. 4. A method according to claim 1 wherein one of the first glue strand and the second glue strand is applied discontinuously. 5. A method according to claim 4, wherein the first glue strand is placed discontinuously, with spaces between sections of the first glue strand, and the second glue strand is applied discontinuously, with sections of the second glue strand displaced in relation to the sections of the first glue strand. 6. A method according to claim 5, wherein the two glue strands are applied offset in relation to each other so that the sections of the first glue strand are within spaces between the sections of the second glue strand. 7. A method according to claim 1, wherein the first glue strand and the second glue strand are applied to the end joint surface of the same cylindrical sleeve. 8. A method according to claim 7, wherein the first glue strand is applied adjacent the outer cylindrical surface of the cylindrical sleeve, and the second glue strand is applied adjacent the inner cylindrical surface of the cylindrical sleeve. 9. A method according to claim 8, wherein one of the first glue strand and the second glue strand is applied discontinuously. 10. A method according to claim 7, wherein the first glue strand and the second glue strand are applied discontinuously. 11. A method according to claim 10, wherein the second glue strand is applied in the discontinuities of the first glue strand. 12. A method according to claim 1, wherein the first glue strand is applied to the end joint surface of a first one of the cylindrical sleeves, and the second glue strand is applied to the end joint surface of a second one of the cylindrical sleeves. 13. A method according to claim 12, wherein the first glue strand and the second glue strand are applied discontinuously. 14. A method according to claim 1, further comprising: processing the end joint surface of a first one of the cylindrical sleeves to a first desired configuration; and processing the end joint surface of a second one of the cylindrical sleeves to a second desired configuration, wherein the first desired configuration and the second desired configuration permit the end joint surface of the first cylindrical sleeve and the end joint surface of the second cylindrical sleeve to be joined to provide a secure joining of the first and second cylindrical sleeves. 15. An apparatus for end-to-end joining of two cylindrical sleeves, each cylindrical sleeve including an end joint surface on the end of such cylindrical sleeve, said apparatus comprising: a first glue nozzle for providing a strand of a first glue; a second glue nozzle for providing a strand of a second glue; a first alignment device for positioning a first one of the cylindrical sleeves; and a second alignment device for positioning a second one of the cylindrical sleeves, wherein: the alignment devices position one of the cylindrical sleeves adjacent said first glue nozzle, permitting said first glue nozzle to apply the first glue strand on at least a part of the width of the end joint surface of that cylindrical sleeve, and position one of the cylindrical sleeves adjacent said second glue nozzle, permitting said second glue nozzle to apply the second glue strand on at least a part of the width of the end joint surface of that cylindrical sleeve, the alignment devices position the cylindrical sleeves with the width of the end joint surface of a first one of the cylindrical sleeves against the width of the end joint surface of a second one of the cylindrical sleeves, the first glue has properties that cause the first glue strand by itself to fix the end joint surfaces of the cylindrical sleeves within a first time period, the second glue has properties that cause wetting of the sleeve material in the end joint surface and its immediate vicinity and setting of the second glue strand by itself within a second time period, longer than the first time period. 16. An apparatus according to claim 15, wherein said alignment devices position the first one of the cylindrical sleeves adjacent both said first glue nozzle and said second glue nozzle. 17. An apparatus according to claim 15, wherein said alignment devices position the first one of the cylindrical sleeves adjacent said first glue nozzle and position the second one of the cylindrical sleeves adjacent said second glue nozzle. 18. An apparatus according to claim 15, further comprising: a processing unit for processing the end joint surfaces of the cylindrical sleeves to configurations permitting the end joint surfaces of the cylindrical sleeves to be securely joined. 19. Apparatus according to claim 18, wherein said processing unit comprises a plurality of rails and a milling device for configuring the end joint surfaces of the cylindrical sleeves. 20. Apparatus according to claim 19, wherein, when one of the cylindrical sleeves in positioned on said milling device, said rails extend in the longitudinal direction of such cylindrical sleeve and are spaced around the circumference of such cylindrical sleeve.