Splicer assembly for splicing material webs, a. having a first dispensing device for dispensing a finite first material web , b. having a second dispensing device for dispensing a finite second material web , c. having a connecting device for connecting the finite first material web and the finite second material web so as to form an endless material web , and d. having a material web threading assistance assembly for assisted threading of the finite first material web or of the finite second material web into the splicer assembly in a threading procedure, wherein the material web threading assistance assembly comprises i. at least one conveying installation for conveying the finite material web to be threaded in a threading direction in the threading procedure, and ii. a conveying installation drive installation for driving the at least one conveying installation in the threading procedure, characterized in that e. when traction is applied to the threaded finite material web in the threading direction downstream of the material web threading assistance assembly in terms of the threaded finite material web , the at least one conveying installation conveys the threaded finite material web (5, 13, 31, 8, 16. 34) in the threading direction , and f. when insufficient traction is applied to the threaded finite material web in the threading direction downstream of the material web threading assistance assembly in terms of the threaded finite material web , a conveyance of the threaded finite material web by the at least one conveying installation in the threading direction is omitted. a. having a first dispensing device for dispensing a finite first material web , b. having a second dispensing device for dispensing a finite second material web , c. having a connecting device for connecting the finite first material web and the finite second material web so as to form an endless material web , and d. having a material web threading assistance assembly for assisted threading of the finite first material web or of the finite second material web into the splicer assembly in a threading procedure, wherein the material web threading assistance assembly comprises i. at least one conveying installation for conveying the finite material web to be threaded in a threading direction in the threading procedure, and ii. a conveying installation drive installation for driving the at least one conveying installation in the threading procedure, i. at least one conveying installation for conveying the finite material web to be threaded in a threading direction in the threading procedure, and ii. a conveying installation drive installation for driving the at least one conveying installation in the threading procedure, e. when traction is applied to the threaded finite material web in the threading direction downstream of the material web threading assistance assembly in terms of the threaded finite material web , the at least one conveying installation conveys the threaded finite material web (5, 13, 31, 8, 16. 34) in the threading direction , and f. when insufficient traction is applied to the threaded finite material web in the threading direction downstream of the material web threading assistance assembly in terms of the threaded finite material web , a conveyance of the threaded finite material web by the at least one conveying installation in the threading direction is omitted. <EOS>