FILM UNWIND Flashcards
Reel Holding shaft
Holds the film to be fed through the unwinding system . The inner adjustment knobs hold the fin in place and are used to center the film on the reels:film sizes may vary from 276 mm to 461 mm. The film adjustment knobs move the film toward the front or rear of the shaft
Braking Assembly
The braking system uses two brake pads to control he unwind of the film. The Drag pad constantly applies pressure to the spindle by means of a lever or a spring creating resistance on the reel holding shaft. This control the tension of the film. The stop pad is activated when an E-stop and or cycle is pressed or the machine is waiting for producto.The stop pad is operated with an air cylinder. When the stop pad is activated it stops the sprinkle form turning, preventing the film from unwinding
Dancer Bar
The dancer bar is attached to the drag pad on the braking system. When the pressure of the film pull the dancer bar up, the dancer bar releases pressure on the drag pad which releases pressure to the drag pad which slows the unwind of the film creating tension
AIR CYLINDER
Once the signal is reached that the film is ready to splice, the electronic system then activates the air cylinder located on the bottom side of the splice table. The air cylinder pushes one of the lack rollers against the other while the film is being pulled. This in turn pulls both rolls at the same time. The splice tape adheres to the new roll of film as both rolls of film are being pulled through the splice table creating the splice
FILM END PHOTOCELL
The photocell located on the bottom side of the splice table tells the electrical system when film is not present and and sends a signal that will fault the machine out to prevent the film from traveling any father through the machine
19- Wings
20- The “V”
21- Fin wheels
19-A= The wings are stationary and help stabilize the film and create the “U” as it travel through the folding box .
20- A= the V is used to direct the film evenly into the fin wheels.if the gaps on either side of the V are offset the film will pull unevenly causing a twister in the film The V should be level with the guards covering the fin wheels.
21- A= High speed models
*the first set are called pulling rollers.
*the second set are pre-seal rollers
*the third and fourth te are sealing rollers.
Low speed models (8)
*the first and fourth set are called pulling rollers
* the second set are the pre-seal rolls and the third set are sealing rollers
22- Heatinhg system
23-Air cylinders
24- Product safety eyes
25- Pluger
22-A= The heating system is on the bottom side of the fin wheels. The hearing system system consistía of hearing elements and thermocouples.
23- A= The air cylinders open and close the fin wheels when the operation button is pressed and when he machine stars and stop.
24-A= The product safety eyes are for reading misplace product. These eyes must be lined up so that they can see each other.
25- A= The plunger is used to keep the next stack to be sealed in place as the tamper pushes air out of the current package being sealed. An air cylinder extends and retracts the plunger when the signal received.
26- Jaw assembly
27- Upper and lower jaws
28- Knife
26- A= The ja components are:
* Pneumatic cylinder for the knife
* cutting knife
* upper and lower jaws
* jaw springs
**SEALING PROCESS****
1* jaws begin to close
2* Tamper comes down and gussets come in
3* jaws close and seal
4* Tamper goes up ,Knife cuts gussets como out
5* jaws open and repeat.
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27- A= The upper and lower jaws are heated by heating elements and the controlled by thermocouples. The jaws are attached to a gear in an offset position instead of the center of the gear to make the up/down motion and ride along a cam to make the belts to move left to right along with the jaw cycle. The gear is turned by a motor and shaft system.
28- A= The knife is extended and retracted by an air cylinder and is activated the same as the plunger.
29- Jaws Pressure
30- Jaw security
31- Pneumatic tamper
29- A= The red springs located on the of the jaw assembly apply the pressure to the jaws to assist in the sealing process. Too much jaw pressure can cause cuts in the end seals and damage to the jaws. Too little pressure can cause inadequate end seals.
30- A= There are two proximity switches located on top of the jaw assembly. There switches tell the electrical system they the jaws have used on product or are unlevel during closure. The two taches must see the spacers located on top of the spring assembly at the same time or the machine will shut down with a jaw security fault.
31- A= The pneumatic tamper consists of
* a foam cushion
*locking pin for replacement
* guide
* clamp lever
* hand wheel for height setting and scale.
32- Knife/tamper screen
33- Plunger/gusseting/vacuum screen.
32- A= The knife/tamper screen is used to adjust when the knife and/or tamper are to their cycle and their cycle. The value under the camera indicates at what degree the tamper and/or knife are actually at.The value under the start column indicates the degree in which the tamper and/or knife is set to start its cycle ( extend). The value under the stop column indicates the degree in which the tamper and and/or knife is set to end its cycle (retract)
33- A= This screen is used to adjust when the plunger starts it cycle and ends its cycle. The value under the start column indicates the degree in which the plunger is set to star its cycle (extend). The value under the stop column indicate the degree in which the plunger is set to end its cycle (retract)
34- Delivery system
35- Gear system
34- A= The delivery system transports, while controlling spacing from the indeed conveyor belt to the discharge conveyor belt.The delivery system consists of conveyor motors,chain pulling adjustable product guides a lug chain fitted on the pulling chain and photocells.
35-A= The gear system for the longitudinal sealing section and the indeed section work together to move the product in a manner consistent with the ilapak setting to allow for a smooth flow of the product.
* Infeed belt tensioner
* charge conveyor belt tensioner
* discharge belt tensioner
36- Infeed belts
37- removing infeed belt line 8
36- A= The indeed belts are driven by a chain pulling pinion operated by an electric motor. the belt assembly can be removed for cleaning replacement and repair.the belt ride on a series of rollers and a tension roller. Inside these rollers are bearings.The bearings should be checked regularly on preventative maintenance.
37-A= 1-Remove the product guides.
2- Remove the four Allen bolts that attach the belt assembly to the frame
3- grab both ends of the belt assembly and slide the whole assembly towards you to remove the assembly from the frame . Set the assembly on a solid surface so that the assembly cannot fall
4- Make a mark on the shaft and housing of the tension roller before removing. This will make assembling the roller faster.Remove the Allen screws that hold the tension roller in place.Clean roller in place.Clean roller are in good condition if not replace the bearings.
5- Remove the stationary roller by removing the two hex head bolts that hold it in place. This roller can be difficult to remove. If the older does not pull out easily loosen a few of the hex head bolts that hold the frame of the assembly together. Donor remove just loosen
6.- Once the tension roller and stationary roller are removed the belt easily slides off of the assembly
