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Loveshaw Little David LD24 Operator's Manual

Uniform side belt drive fully automatic case sealer
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Little David™ Case Sealer
LD24 Uniform Side Belt Drive
Fully Automatic Case Sealer
Version: 10/10/11 Rev A
Operator' s Manual

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Summary of Contents for Loveshaw Little David LD24

  • Page 1 Little David™ Case Sealer LD24 Uniform Side Belt Drive Fully Automatic Case Sealer Version: 10/10/11 Rev A Operator’ s Manual...
  • Page 2 L I T T L E D A V I D ™ C A S E S E A L E R LD24 Operation Copyright  Loveshaw Loveshaw, Inc. 2206 Easton Turnpike, PO. Box 83 South Canaan, PA 18459 Tel: 1-800-962-2633 • 570-937-4921 Fax: 570-937-4016 www.loveshaw.com...

  • Page 4: Table Of Contents

    T able of Contents Chapter 1: Introduction Chapter 2: Operating Safety Chapter 3: Overview & Setup Chapter 4: Installation Chapter 5: Theory of Operation Chapter 6: Machine Components Chapter 7: Maintenance...
  • Page 5 Chapter 8: Troubleshooting Chapter 9: Warranty Chapter 10: Assembly Drawings and Schematic...

  • Page 6: Chapter 1: Introduction

    Chapter Introduction hank you for purchasing the Little David™ case sealer, the LD24. The LD24 is a fully-automatic side belt drive case sealer. The LD24 is a robust built 24/7 case sealer constructed of quality materials, robust drive motors, pneumatic and electrical components..

  • Page 7: Chapter 2: Operating Safety

    Chapter Operating Safety Observe the warnings and cautions below when using the Little David LD24 case sealer. Within this manual on pages 4 -6, all safety labels are depicted with location and part number. If a safety, label is missing or not legible it must be replaced immediately.
  • Page 8 This manual contains operator information for Little David Case Sealer Equipment. It is directed toward the person who operates and maintains the machine. Read through the manual completely before operating the machine. Thereafter, refer to it as necessary. Take special note of all warnings, cautions, and maintenance instructions. Like any other piece of equipment, the Little David Case Sealer functions best when maintained and used correctly.
  • Page 9 2 3 5...
  • Page 10 SL-0021 SL-0001 SL-0002...
  • Page 11 SL-0004 SL-0006 SL-0003...

  • Page 12: Chapter 3: Overview & Setup

    Chap pter Case S Seale r Sect tions Overview This manua al covers sev veral parts of the mac chine. The following diagram iden ntifies the k key sections s of the mac chine. MINOR FLAPS AJOR FLAPS SUPPRE ESSOR OLDERS HEAD ASSEMBLY...
  • Page 13 Machine Specifications Machine dimensions:  Height: 62” @ 22 ¼” conveyor height  Length:  64 ¾” overall including box guides.  58” overall frame length (Conveyor opening dimension)  Width: 49” main electrical enclosure to opposite side crank handle. ...
  • Page 14 Operating speed:  Standard belt speed: 100 ft/min Air Requirement  5 scfm @ 80 psi Machine box capacity:  Length: - 8” to 24”  Width: - 6” to 18”  Height: 4” to 18” Machine Setup: The following steps describe how to set up and change the machine over from one size to another.
  • Page 15 these measurements are usually the inside dimensions of the box. 3. Adjust the height assembly of the head to the measured heighted of the box to be processed. There is a crank handle on the top of the machine to raise or lower the head assembly. There are scales on the main upright structure of the machine with an integral pointer and a scale.
  • Page 16 HEAD HEIGHT POINTER AND HEAD HEIGHT SCALE ADJUSTING CRANK HANDLE FLAP FOLDER WIDTH POINTER AND SCALE FLAP FOLDER WIDTH ADJUSTING CRANK HANDLE SIDE BELTS DRIVE WIDTH ADJUSTING CRANK HANDLE SIDE BELTS DRIVE WIDTH ADJUSTING POINTER AND SCALE...
  • Page 17 MINOR FLAPS SUPPRESSOR POINER AND SCALE MINOR FLAP SUPPRESSOR SLIDE ADJUSTOR LOCKING HANDLE...

  • Page 18: Chapter 4: Installation

    If the machine arrives damaged contact Loveshaw immediately to help in filing a claim with the shipping company. Section 1: Placing the Machine The case sealer is fully assembled and ready for operation.
  • Page 19 THREADED RODS JAM NUTS LEVELLING PAD...

  • Page 20: Chapter 5: Theory Of Operation

    Chapter Theory of Operation LD24 The LD24 will automatically fold all four top flaps and apply tape to the top and bottom of corrugated cardboard boxes. The LD24 provides indexing which maintains proper spacing between boxes that are being processed by the machine. With the machine started, a box either fed by powered conveyor or hand enters the machine.
  • Page 21 and solenoid valve “SV3” and “SV4” de-energize resetting the in feed indexing gate and the major flap folders. The box will continue to the exit of the machine as the next box is allowed to enter the machine re-starting the cycle. Key design features: Standard features: The LD24 incorporates numerous features to insure quality...
  • Page 22 Optional features: Energy Saving Mode The LD24 is factory set to operate in energy saving mode which will shut the machine down after 10 minutes of in activity. (Boxes not entering the machine) The mode can be disabled if not desired by removing a yellow jumper wire from terminal 100 to terminal 10 on the terminal strip in the main electrical enclosure.
  • Page 23 supervisor and the maintenance department. Never operate a machine that is not working properly. With the machine started introduce a box to the infeed of the machine. Photoeye PE1 will become blocked raising the indexing gate. As the box moves through the machine PE1 will become unblocked and the rear flap folders will extend outward and fold the rear minor flap of the box down.
  • Page 24 into the machines and manually folding the top flaps. Re-start the machine with the box in it. The major flap folders will extend to hold the major flaps downward as the machine is re-started and the box will exit the machine. 2 ½”...

  • Page 25: Chapter 6: Machine Components

    Chapter Machine Components Control Station There are two controls stations on the machine. One is integral to the main electrical enclosure and the other one is located on the opposite side of the machine directly across from the main enclosure. The pushbuttons are high quality, touch safe UL and CE approved.
  • Page 26 E-STOP START Pneumatic regulators The regulators optimize the machine for the customers’ specific needs. Regulator “R1” controls the main incoming air pressure. The machine is designed to operate optimally at 80 PSI. Regulator “R2” controls the rear minor and major flap folder mechanism.
  • Page 27 tensioned. When SV1 is de-energized the side belt drives tension force is decreased to the force being exerted by the spring loaded cylinders. The spring loaded cylinders are being utilized to insure that the center guided side belt cannot fall out of the guides or drive rollers.
  • Page 28 MAIN PRESSURE REGULATOR DUMP VALVE “R1” LOCK OUT FLAP FOLDERS INDEXING GATE REGULATOR REGULATOR “R2” “R4” INDEXING GATE VALVE “SV4” REAR FLAP SIDE BELT FOLDERS VALVE TENSIONER “SV2” REGULATOR “R3” MAJOR FLAP FOLDERS VALVE “SV3”...
  • Page 29 Side Belt Drive Assembly The side belt drive assembly consist of a center guided belt, a 1/5 hp gear motor, drive and idler roller, belt backing plate, and spring loaded air cylinder. There are two side belt drive assembly per machine, one on each side. They are used to drive the box from the entrance to the exit of the machine.
  • Page 30 also pushes the side belt out wards towards the front of the machine. This force is utilized to merely hold the side belt in the belt guide, drive and idler roller when air pressure is not present. It simply stops the belt from sagging. SIDE BELT ASSEMBLY SIDE BELT...
  • Page 31 There are sc cales on bot th the heigh ht and widt th adjustme ents of the head assemb bly. Simpl ly measure the height of the bo x with all flaps folded and then t the width o of the box. Turn the le ead screw on top of th...
  • Page 32 Electrical enclosure assembly The electrical enclosure assembly is located on the left hand side of the machine in reference from the in feed of the machine. The enclosure consists of a red mushroom head twist to release emergency stop switch and a flush head green machine start push button.
  • Page 33 Remote operator station The remote operator assembly is located on the right hand side of the machine in reference from the in feed of the machine. The assembly consists of a red mushroom head twist to release emergency stop switch and a flush head green machine start push button.

  • Page 34: Chapter 7: Maintenance

    Chapter Maintenance Safety: NEVER perform any maintenance on the LDXRTB without first following your company’ s LOCK OUT / TAG OUT procedures. Side Belt replacement To change a worn belt first follow your companies lock out / tag out procedures. With the machine in a de-energized state loosen the 6mm socket head screw that holds the top covers in place.
  • Page 35 GUARD MOUNTING HARDWARE SIDE BELT FRONT GUARD GUARD MOUNTING HARDWARE SIDE BELT REAR GUARD...
  • Page 36 DRIVE ROLLER SHAFT KEY SIDE BELT DRIVE ROLLER DRIVE ROLLER SET SCREWS...
  • Page 37 Replacing Side Belt Gear motor First remove the side drive belt, refer to side belt replacement procedure earlier in this chapter. Remove the conduit cover from the side belt motor and disconnect the motor cable from the motor leads. Take note on how the motor is connected to the motor cable when re-connection takes place.
  • Page 38 Rear Flap Folders Cylinder Replacement To change a rear flap folder cylinder the cover much first be removed. With the cover removed it will possible to unattached the folding arm from the rod end attached to the cylinder. Now loosen the jam nut that is securing the rod end to the cylinder shaft.
  • Page 39 MAJOR FLAP MAJOR FLAP FOLDER FOLDER CYLINDER ROD END CYLINDER REAR MINOR FLAP FOLDER GUARD MAJORFLAP FOLDER REAR MINOR FLAP FOLDER...
  • Page 40 AP FOLDER RALLEL TO REAR R MINOR FLAP FOLDER...
  • Page 41 MAJOR FL CYLINDE MINOR FLAP FOLDER ROD END FOLDER CYLINDE MAJOR FL FOLDER CYLINDE Major F Flap Fol der Cyl linder R Replace ement To replace a major fla ap folder cy ylinder rem move the air rlines and fittings from m the air cy ylinder.
  • Page 42 Indexing Gate Cylinder Replacement To replace the indexing gate cylinder remove the airlines and fittings from the air cylinder. Remove the clevis from the cylinder rod, it will be necessary to remove the clevis pin from the indexing gate an cylinder rod end. Remove the mounting hardware from the bottom of the cylinder.
  • Page 43 Chapter Troubleshooting: PROBLEM CAUSE CORRECTIVE ACTION Machine will not start. Emergency stop switch(s) activated either Check that both E-stop switches are not main enclosure or remote op. station. engaged. No incoming power. Check machine fuses and source power. Defective start pushbutton Re-place pushbutton.
  • Page 44 Drive belts are slipping. Belts are not tensioned. Check air pressure at regulator “R3”. Belts are worn. Replace drive belts. Rear flap does not fold down Suppressor not set properly. Rear flap collides with suppressor while flap is being folded downward. Check suppressor is set to width of box.
  • Page 45 1 YEAR ALL OTHER PARTS Except for wear and moving parts. *LIMITED WARRANTY – LOVESHAW, an ITW COMPANY (HEREIN AFTER “LOVESHAW”) WARRANTS ONLY THAT THE GOODS SOLD BY IT SHALL BE FREE FROM DEFECTS IN MATERIAL AND WORKMANSHIP, UNDER PROPER AND NORMAL USE AND MAINTENANCE,...
  • Page 46 INVOLVED IN AN ACCIDENT. NO PERSON IS AUTHORIZED TO MAKE ANY WARRANTY OR TO CREATE ANY LIABILITY BINDING UPON LOVESHAW, WHICH IS NOT STATED IN THIS WARRANTY. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES OF ANY KIND, EXPRESSED OR IMPLIED, WHICH ARE HEREBY EXCLUDED.
  • Page 47 Chapter ASSEMBLY DRAWINGS AND SCHEMATICS...
  • Page 48 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO SCALE METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL CHECKED...
  • Page 49 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO SCALE METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL CHECKED...
  • Page 50 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO SCALE METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL CHECKED...
  • Page 51 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO SCALE METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL CHECKED...
  • Page 52 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO SCALE METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL CHECKED...
  • Page 53 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO SCALE METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL CHECKED...
  • Page 54 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO SCALE METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL CHECKED...
  • Page 55 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL...
  • Page 56 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL...
  • Page 57 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO SCALE METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL CHECKED...
  • Page 58 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO SCALE METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL CHECKED...
  • Page 59 THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF DWG NO METRIC = .3mm FINISH LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY .XXX = .1mm INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE MATERIAL...
  • Page 66 LOVESHAW - LD24T - CASE SEALER LADDER LOGIC - LD24_11R1.RSS...
  • Page 67 LD24_11R1 LAD 2 - MAIN_PROG --- Total Rungs in File = 8 0000 Jump To Subroutine SBR File Number Jump To Subroutine 0001 SBR File Number Jump To Subroutine 0002 SBR File Number 0003 Jump To Subroutine SBR File Number 0004 Jump To Subroutine SBR File Number...
  • Page 68 LD24_11R1 LAD 3 - CONDITION --- Total Rungs in File = 10 MACHINE SET UP LOGIC. MACHINE INTERNAL ENTRANCE INTERNAL RELAY PHOTO RELAY PE1 ON ELECTRIC ONE SHOT TRANSITION SENSOR LOGIC ONE SHOT INSTRUCTION PE1_ON B3:0 B3:0 0000 1761-Micro MACHINE SET UP LOGIC. MACHINE INTERNAL ENTRANCE...
  • Page 69 LD24_11R1 LAD 3 - CONDITION --- Total Rungs in File = 10 MACHINE SET UP LOGIC. INTERNAL MACHINE INTERNAL RELAY RUNNING RELAY MS1 OFF ONE SHOT TRANSITION INPUT LOGIC ONE SHOT INSTRUCTION MS1_OFF B3:0 B3:1 0007 1761-Micro MACHINE SET UP LOGIC. INTERNAL INTERNAL INTERNAL...
  • Page 70 LD24_11R1 LAD 4 - MACH START --- Total Rungs in File = 5 THE OUTPUT IS ENERGIZED WHEN THE MACHINE IS RUN MODE. MACHINE MACHINE INTERNAL RUNNING RELAY CONTROL MACHINE INPUT RELAY STARTED LATCH B3:6 0000 1761-Micro 1761-Micro THE OUTPUT IS ENERGIZED WHEN THE MACHINE IS FIRST STARTED. INTERNAL MACHINE RELAY...
  • Page 71 LD24_11R1 LAD 5 - REAR FLAP --- Total Rungs in File = 7 INTERNAL RELAY MACHINE STARTED LATCH B3:6 0000 THE TIMER DE-BOUNCES THE PHOTOEYE AT THE ENTRANCE OF THE MACHINE. WHEN THE MACHINE IS BEING FED BY HAND IT ALLOWS THE OPERATOR TO PULL THE BOX OUT BEFORE A MACHINE CYCL WILL START. MACHINE ENTRANCE REAR...
  • Page 72 LD24_11R1 LAD 5 - REAR FLAP --- Total Rungs in File = 7 WHEN THE VALVE IS ENERGIZED THE REAR FLAP FOLDERS ACTIVATE OUTWARD. REAR REAR REAR FLAP FLAP FLAP FOLDER FOLDERS FOLDERS SOLENOID EXTEND RESET VALVE TIME DELAY TIME DELAY T4:1 T4:2 0004...
  • Page 73 LD24_11R1 LAD 6 - MAJOR FLAP --- Total Rungs in File = 6 INTERNAL RELAY MACHINE STARTED LATCH B3:6 0000 WHEN THE TIMER REACHES ITS PRESET VALUE THE MAJOR FLAP FOLDERS EXTEND OUTWARD. INTERNAL RELAY MAJOR MAJOR PE2 OFF FLAP FLAP TRANSITION FOLDER...
  • Page 74 LD24_11R1 LAD 7 - INDEXING --- Total Rungs in File = 6 INTERNAL RELAY MACHINE STARTED LATCH B3:6 0000 WHEN THE TIMER REACHES ITS PRESET VALUE THE INDEXING GATE RAISES UP. INTERNAL RELAY MAJOR INFEED PE1 ON FLAP INDEXING TRANSITION FOLDER GATE ONE SHOT...
  • Page 75 LD24_11R1 LAD 7 - INDEXING --- Total Rungs in File = 6 WHEN THE VALVE IS ENERGIZED THE GATE IS HELD DOWN. INFEED INTERNAL INDEXING RELAY GATE INDEXING SOLENOID GATE VALVE CONTROL B3:2 0004 1761-Micro 0005 Page 2 Monday, October 10, 2011 - 16:32:32...
  • Page 76 LD24_11R1 LAD 8 - BOX JAM --- Total Rungs in File = 5 INTERNAL RELAY MACHINE STARTED LATCH B3:6 0000 IF A BOX JAMS AT THE INFEED GATE THE TIMER WILL REACH ITS PRESET VALUE AND SHUT THE MACHINE DOWN. MINOR FLAP INTERNAL INTERNAL...
  • Page 77 LD24_11R1 LAD 8 - BOX JAM --- Total Rungs in File = 5 0004 Page 2 Monday, October 10, 2011 - 16:32:32...
  • Page 78 LD24_11R1 LAD 9 - LOW TAPE --- Total Rungs in File = 6 WHEN LOW TAPE IS DETECTED THE OUTPUT WILL STROBE ON AND / OFF TOP LOW TAPE TAPE DETECTION ROLL PHOTOELECTRIC STACK SENSOR LITE Time Base 0000 1761-Micro 1761-Micro BOTTOM LOW TAPE...
  • Page 79 LD24_11R1 RSLogix 500 Cross Reference Report - Sorted by Address O:0/0 - {CR1} MACHINE BOX JAM CONTROL RELAY OTE - File #8 BOX JAM - 3 XIC - File #8 BOX JAM - 3 XIO - File #4 MACH START - 0 O:0/2 - {SV2} REAR FLAP FOLDER SOLENOID VALVE OTE - File #5 REAR FLAP - 4...
  • Page 80 LD24_11R1 RSLogix 500 Cross Reference Report - Sorted by Address OTE - File #3 CONDITION - 8 B3:2/0 - INTERNAL RELAY MACHINE INITAL START LATCH OTE - File #4 MACH START - 1 XIC - File #4 MACH START - 1, 2 B3:2/1 - INTERNAL RELAY BOX IN MACHINE AT START UP FOLD MAJOR FLAP OTE - File #4 MACH START - 2...