摘要:
A method and apparatus for performing an order change in a corrugator uses a minimum slit head configuration with all slit heads carried on two sides of a single tool support structure. A single robot is operable on the support structure to independently reset the positions of slit heads during a running order to prepare for subsequent order change in a most efficient manner, utilizing order scheduling that eliminates order changes that cannot be formed with the minimum slit head configuration.
摘要:
A method for automatically setting the rider roll/glue applicator roll gap for the single face web on a glue machine senses a forward drag that the single face web, operating at corrugator speed, exerts on the glue applicator roll, driven at an underspeed, after bringing the flute tips of the single face web into contact with the glue applicator roll by adjusting the position of the rider roll. Changes in forward drag exerted on the glue applicator roll are monitored and related directly to glue applicator roll drive current to provide a slight compression of the single face web between the rider roll and the glue applicator roll. Preferably, the glue applicator roll uses a regenerative drive and the target drive current command in a feedback control system to cause the gap to be adjusted to achieve the desired slight compression of the web flutes and to maintain the glue applicator roll under speed.
摘要:
A method for automatically setting the rider roll/glue applicator roll gap for the single face web on a glue machine senses a forward drag that the single face web, operating at corrugator speed, exerts on the glue applicator roll, driven at an underspeed, after bringing the flute tips of the single face web into contact with the glue applicator roll by adjusting the position of the rider roll. Changes in forward drag exerted on the glue applicator roll are monitored and related directly to glue applicator roll drive current to provide a slight compression of the single face web between the rider roll and the glue applicator roll. Preferably, the glue applicator roll uses a regenerative drive and the target drive current command in a feedback control system to cause the gap to be adjusted to achieve the desired slight compression of the web flutes and to maintain the glue applicator roll under speed.
摘要:
An order transition in a corrugated is accomplished by creating an overlap of the slits made by the slitting tools associated with the expiring (running) and new orders. However, the slit tool associated with the innermost slit between the upper and lower level outs is maintained in slitting contact with the board to extend the slit line into further overlap with the slits made by the new order tools to create an order change region. A lateral cut is made to connect the innermost slit between the upper and lower level outs on the new order and the slit created by the tool delayed from withdrawal in the running order. Trim cut transitions are handled in the same manner.
摘要:
An order transition in a corrugated is accomplished by creating an overlap of the slits made by the slitting tools associated with the expiring (running) and new orders. However, the slit tool associated with the innermost slit between the upper and lower level outs is maintained in slitting contact with the board to extend the slit line into further overlap with the slits made by the new order tools to create an order change region. A lateral cut is made to connect the innermost slit between the upper and lower level outs on the new order and the slit created by the tool delayed from withdrawal in the running order.
摘要:
A gapless order change in a continuous running corrugated paperboard web, created by using a partial transverse web sever upstream of the web selector device, utilizes selector fork orientation and operation that allows a redirected web portion to be diverted from one slider table to the other with no gap at the transverse slit. The improved apparatus is particularly effective in providing web transition at order change from the lower slider table to the upper slider table where the total width of the output web portions going to the upper level is increased and requires an upward diversion of a redirected web portion.
摘要:
Corrugated paperboard box blanks are formed with corner fold lines defined by a colinear slit and score. The score deflects one slit edge of the liner out of the plane of the blank such that, when a subsequent lateral fold is made on the line, one slit edge tucks consistently under the other along the full length of the fold line. The resultant box blanks fold more squarely than prior art folded boxes with no significant loss in the compressive strength of the box.
摘要:
Knocked down boxes made of corrugated paperboard are slit longitudinally in an on-line process directly downstream from the folder/gluer in which the boxes are formed. The boxes are first reoriented 90.degree. in a horizontal plane from the positions in which they are formed in the folder/gluer to a reoriented position for movement in a direction transverse to the box fold lines, the boxes are formed into a shingle in the direction of movement, and the shingle is conveyed in that direction into an alignment station. In the alignment station, the lateral edges of the boxes in the shingle are aligned vertically, while the shingle moves through the alignment station, by shifting the boxes transversely to the direction of movement. The aligned shingle is moved into a rotary slitting blade positioned above the shingle and having a cutting edge which extends downwardly below the underside of the shingle where it is received in a slot in a shingle support positioned below and on opposite sides of the blade immediately adjacent the slit edges of the shingle.
摘要:
A block of a solid lubricant material, such as PTFE, is biased continuously or intermittently against the cutting edge of a rotary slitting blade for corrugated paperboard. The solid lubricant block prevents the build up of starch adhesive and biasing movement compensates for wear of the block and wear of the cutting blade edge.
摘要:
A method and apparatus for performing an order change in a corrugator uses a minimum slit head configuration with all slit heads carried on two sides of a single tool support structure. A single robot is operable on the support structure to independently reset the positions of slit heads during a running order to prepare for subsequent order change in a most efficient manner, utilizing order scheduling that eliminates order changes that cannot be formed with the minimum slit head configuration.