Enhancement Improves Sheeter Pile Quality

To improve pile quality on light weight and/or static prone materials, MAXSON offers a stacker enhancement that incorporates tapes over the pile, a unique air delivery system and a connecting frame.

To improve pile quality on light weight and/or static prone materials, MAXSON offers a stacker enhancement that incorporates tapes over the pile, a unique air delivery system and a connecting frame.

To improve pile quality on light weight and/or static prone materials, MAXSON AUTOMATIC MACHINERY COMPANY now offers a stacker enhancement that incorporates tapes over the pile, a unique air delivery system and a connecting frame that mechanically adjusts the stacker when setting up the size in the delivery system. In addition to assuring press ready piles, the new design increases line speeds by as much as 200 fpm (65 mpm) while reducing set up time.

The delivery system’s overlap carriage is joined to the stacker’s front stop assembly. The connecting arms serve as the framework for the tapes over the pile design. When the Operator repositions the overlap carriage for a new cut off, the sheet length setting for the stacker is automatically set.

Compressed air is introduced at the end of the delivery system creating a cushion between each cut packet that overcomes static build up and helps to float long, limp sheets up against driven top tapes that carry the sheet out into the stacker.

Unlike less Operator friendly designs where belting extends the entire length of the stacker frame, MAXSON’s design mounts rolls within the unifying framework and stacker front stop assembly in which tapes extend out over the pile for the set sheet length. This construction allows Operator easy access to the piling area without having to avoid belting beyond the sheet size being run.  Additionally, the Operator can laterally position the tapes over the pile more easily.

HIPS Manufacturers Can Increase Extruder Speeds on Sheet Lines

The SDFK Sheeter's dual knife rotary cutting section (guards retracted for clarity) can run at speeds of up to 300 fpm (90 mpm) increasing the productivity of HIPS extruding lines.

The SDFK Sheeter’s dual knife rotary cutting section (guards retracted for clarity) can run at speeds of up to 300 fpm (90 mpm) increasing the productivity of HIPS extruding lines.

High impact polystyrene (HIPS) manufacturers can increase production and reduce the waste of their sheet lines by replacing conventional drop shear equipment with the dual knife rotary technology of the MAXSON SDFK Sheeter.

The dual knife rotary cutting action eliminates the skive along the leading and trailing edge on thicknesses up to 0.125″ (3.2 mm) thick, without producing slivers. Using an exclusive clash adjustment, the Operator can safely adjust the cross cutting blades while the cutter is running, by transversely shifting the upper cylinder across the width of the cutter to increase the knife clash, cleaning any fuzziness of the cross cut.

The SDFK Sheeter can follow the extruder’s line speed and with its servo drive system maintains +/- 0.015” (+/- 0.38 mm) cut off accuracy. Equipped with an in line slitter section that permits multiple pile work across the SDFK Sheeter’s width, finished sizes that require no secondary trimming are delivered to the stacker.  An extending grid, initiated by the Operator, allows continuous running of the sheeter while skids of material are removed from the stacker.

Rapid Pallet Discharge Ups by 15% Sheeter Productivity

This feature, which requires no Operator involvement, permits uninterrupted production while changing skids of material safely without rejecting any acceptable sheets.

This feature, which requires no Operator involvement, permits uninterrupted production while changing skids of material safely without rejecting any acceptable sheets.

MAXSON AUTOMATIC MACHINERY COMPANY (Westerly RI) offers a rapid pallet discharge system that requires no Operator involvement and delivers uninterrupted production while changing skids of material safely without rejecting any acceptable sheets. By eliminating down time associated with stopping the sheeter to remove skids and reloading with empty pallets, sheeter productivity is increased by as much as 15%. The feature works as follows:

When the specified batch count is reached, the cutter ramps down to a reduced speed. At the same time, the high and low speed tape sections accelerate clearing sheets from the delivery system.

When the last sheet assigned to the pile enters the stacker, the load table automatically lowers to the off load position. Simultaneously, the slow speed tape section adjusts to a creep rate, resulting in heavily overlapped sheets. These sheets move slowly toward the stacker, providing time for the full skid(s) to be lowered and removed.

The rapid pallet discharge system includes a motorized link belt conveyor on the load table, a motorized infeed link belt conveyor and a motorized out feed link belt conveyor as well as safety light curtains and Operator controls for manual override. All three conveyors are positioned in a pit to make the top of the discharge system flush with the floor.

When the stacker table reaches the lower limit switch, the stacker and out feed link belt conveyors shuttle the full pallets off line, perpendicular to the web travel of the sheeter. At the same time, the infeed link belt conveyor transfers empty skids onto the stacker link belt conveyor.

Once the new pallets are in position the load table raises to the stacker’s top limit switch. The sheeter automatically returns to its previous operating speed and overlap setting. No sheets are lost during the skid change.

High Pressure Laminate Sheet Lines Can Improve Productivity

Using an Operator activated interposing system at the stacker, the inline configuration of the SDFK Sheeter allows for non stop operation while a full pallet of sheeted material is offloaded and an empty skid is raised into position

Using an Operator activated interposing system at the stacker, the inline configuration of the SDFK Sheeter allows for non stop operation while a full pallet of sheeted material is offloaded and an empty skid is raised into position

High pressure laminate (HPL) manufacturers can increase the productivity and reduce the waste of their sheet lines by replacing conventional drop shear equipment with the dual knife rotary technology of the MAXSON SDFK Sheeter.

High pressure laminate is composed of layers of kraft paper, a single layer of decorative paper with a solid color or design, and finished with a protective layer that can have printed design accents or other decorative features. Because of the multi-layer construction, cut quality to avoid “crumbing’ of the multi-layer edges is critical.

The dual knife rotary cutting action eliminates the skive along the leading and trailing edge on thicknesses up to 0.125” (3.2 mm) thick, without producing slivers. Using an exclusive clash adjustment, the Operator can safely adjust the cross cutting blades while the cutter is running, by transversely shifting the upper cylinder across the width of the cutter to increase the knife clash, cleaning any fuzziness of the cross cut.

Able to run up to 300 fpm (90 mpm), the SDFK Sheeter can follow the treater’s line speed and with its servo drive system maintains +/- 0.015” (+/- 0.38 mm) cut off accuracy. Equipped with an in line slitter section that permits multiple pile work across the sheeter’s width, the SDFK delivers finished sizes that require no secondary trimming.

A reject gate diverts sample sheets or non conforming material from the stacking station.  The dual knife rotary cutting action eliminates the skive along the leading and trailing edge on thicknesses up to Using an Operator activated interposing system at the stacker, the inline configuration of the SDFK Sheeter allows for non stop operation while a full pallet of sheeted material is offloaded and an empty skid is raised into position.

MAXSON Offers Quick Turnaround Knife Sharpening Service

CNC Knife Grinder

CNC Knife Grinder

Maxson Automatic Machinery Company (Westerly RI) offers a quick response grinding service for sharpening sheeter cross cutting knives of all manufacturers.

Upon receipt from the Customer, all knives undergo an immediate six point inspection process to identify knife thickness, material composition, parallelism (ability to maintain back edge and knife edge to within 0.004″, flatness (ability to flatten to within 0.002″), the condition of cutting edge (examine for excessively deep nicks) and the condition of non cutting surfaces (examine for excessive marring of knife seating surfaces).

Using a CNC knife grinder, cross cutting blades are precision ground to insure parallelism and edge retention, manually de-burred and then honed to a mirror smoothness. The result of this quality program is a pair of knives that are sharp and smooth, create less friction cutting through material (cleaner cut) and easier for Operators to seat, set and adjust in the cutter.

Once cleaned, the knives undergo a final evaluation (with a signed inspection form for Customer review), the blade edges are covered and knives packaged for shipment. Turnaround time is 5 business days with expedited service also available.

Contact Skip Hoffman, MAXSON’s Customer Service Manager at 401-596-0162 or shoffman@maxsonautomatic.com for more information about this service.

MAXSON Expands Engineering Product Development Team

MAXSON AUTOMATIC MACHINERY COMPANY has added experienced personnel to its Engineering Department to lead development efforts in advancing sheeter designs for the digital, folio and large format sizes.

The next generation of MAXSON’ sheeter models will continue to insure Operator safety, enhance ease of set up, ability to convert a versatile range of materials productively, minimize power demands, incorporate intuitive control interfaces that provide readily exportable production information, and construction that uses readily accessible components available from third party vendors.

Curtis-Martin

 

 

 

Curtis Martin earned his B.S. Chemistry from Kansas State University. His career experiences include designing cutting equipment, lithium ion battery systems for aerospace, military and non-military applications, heads up displays for first person control and robotics.

 

 

 

 

Tadeusz-Kuzniar
Tadeusz Kuzniar graduated with a M.S. in Electronics in the Wroclaw Technical University (Poland). He joined INDRAMAT, which later become part of BOSCH REXROTH, focusing on CNC controls and automation. As a Principal Applications Engineer, Ted developed solutions for various applications and led workshops for advanced controllers, drive and interface systems.

An In Line, Accurate Counting and Marking System Available

Tag-Inserter with pedestal

 

 

MAXSON AUTOMATIC MACHINERY COMPANY offers an pneumatically triggered tag inserter that provides a dependable actuation of the tag feed out and tag cut off. Compressed air passes through an adjustable flow control valve and activates an air cylinder, feeds out 6” (150 mm) of tag stock. When the solenoid is de-energized, (after a dwell time that allows a few sheets to gather on top of the tag), the cylinder which fed the stock out, retracts, cutting the tag off.

 

 

 

 

Pile with marked reams

 

Using a counter/multiplier, at a preset count a solenoid is activated that initiates the tag insertion, insuring an accurate count within the pile. The tag inserters can be easily mounted on rotary sheeters, printing presses and the like. Because of the compact design, the units can be placed in tight quarters in various positions. The narrow snout of the tag inserter permits access in difficult to reach applications. Thousands are in operation, installed because of the tag inserter’s outstanding reliability and jam free operation.

Sheeter Can Be Configured to Cut Wide Range of Materials

View of the infeed section of the MSS Sheeter

View of the infeed section of the MSS Sheeter

The MAXSON MSS Sheeter cuts a wide range of materials such as newsprint, glassine, kraft, embossed, laminated papers, and box boards. It also profitably converts aluminum, and copper foils, foam, non wovens, gasket material and many other specialties. The sheeter lends itself to customizing designs for numerous applications.

The MSS Sheeter is a stationary bed knife/rotary cutter especially designed for moderate production of short to medium length runs on different size set ups. The flow of the material through the cutting section, the knife mountings and blade angles have all been designed for maximum cutting efficiency and capability rather than for speed.

Equipped with state of the art electronic cut off control the MSS Sheeter eliminates the need for guillotine trimming. Sheet squareness can be automatically set on the dead knife cutter. The cutter’ servo-motor can be programmed to provide cut-to-register capability (to within +/- 0.006″, +/-0.13 mm) when converting pre-printed or holographic material. The flow of material through the cutting section, the knife mounting arrangement and the cross cutting blade angles are designed for maximum cutting efficiency on a wide range of substrates offering versatile performance.

The sheeter’s compact size requires minimal floor space and only one Operator. The MSS Sheeter‘s durable design and rugged construction insures years of trouble free performance. The machinery’s maintenance requirements can be easily addressed by in house staff although the electrical system is equipped with remote diagnosis should trouble shooting be required by MAXSON technicians.

 

Sheeter Feature Avoids Secondary Repositioning of Piles on Skid

Pile Offset

Pile Offset

MAXSON AUTOMATIC MACHINERY COMPANY (Westerly RI USA) offers a feature on its precision sheeters that avoids the secondary restacking of piles prior to feeding the skids into a printing press. The design allows the Operator to offset the tail end of the sheeted stock from the back edge of standard sized skids. As a result, there is no need for the intermediate step of aerating and re-jogging the piles prior to loading into the printing press feeder.

The vibrating back jogger system mounts at the end of the delivery system and protrudes out over the stacker’s load table. By positioning the standardized pallet against the stacker’s backstop, up to 6” (152 mm) offset of the pile, relative to the skid, can be achieved.

In this design, compressed air is introduced at the end of the delivery system to help float the initial sheets so the leading edge does not get caught in the slots of standard sized pallets. Pivoting pucks within the back jogger turn down to the skids, insuring the bottom sheets of the pile do not drift out of position because of variation in pallet height.

Board Sheeter Outfitted for High Production Now Available

04.06.15A dual knife rotary sheeter equipped with productivity enhancement features is available to converters and printers of board grades from Maxson Automatic Machinery (Westerly RI USA). The sheeter’s low inertia knife cylinders allow high speed on short cut offs, yet permits knife loading up to 1000 pounds/3300 ft2 (800 grams/meter2). Speeds of up to 1300 fpm (396 mpm) can be achieved on machines up to 90” (2286 mm) wide.
Two shaftless self loading roll stands cradle rolls weighing up to 10,000 lbs. (4545 kg) in position while the sheeter is running. The overhead automatic splicing system, joins the end of one roll to the beginning of the other while the sheeter speed exceeds 800 fpm (240 mpm), eliminating down time associated with roll changes.
Using the sheeter’s “continuous run” feature and rapid pallet discharge system maximizes production by removing a full skid and inserting an empty pallet while the operation continues, without the loss of any acceptable sheets.


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