In the past years, nylon cable tie industry was under heavy pressure and facing fierce competition. Labor cost keeps rising, young people do not want to work at factory and many cable tie manufacturers find it hard to employ sufficient workers. At the same time, the main raw material for zip tie, PA 66, price was at a high level….
In order to serve customers better, the R&D team developed full-automatic packing machine for nylon cable ties. This equipment can cut runner, count, inject water and seal automatically, which minimums labor force and is a great improvement for intelligent plant and automation production.
Tips:
① Sensors on the rotary table will proceed only when cable tie detected.
② Rotary table can be cancled if the robot arm is top type. And the sensors will be installed on the part of primary positioning.
Can Add I/O Signal to realize the communication between packing machine and robot arm.
Do the first time of positioning for runner
Accurate positioning the dimension of runner, cutting cable ties pc by pc.
Cutting tool: dull knife(long lifetime and stable cutting)
Counting: count pc by pc(detected by sensors)
Tips: Runner dropped from the cutting position. Please put a box under it to take the runner.
After cutting and counting, the tool of collection gathers the cable ties and put them inside of stock bins.
CAN SET THE PACKING QUANTITY ON THE CONTROLLER PANEL
Pick cable ties from stock bins, deliver and put them into packing bag, and then tidy up.
Packing Station:
Inject water after the quantity of cable ties reaches to the setting packing quantity.
Two options for injecting water:
① inject water first, then put cable ties inside the packing bag
② Put cable ties first, then inject water
Water injected: workable to set the weight of water, min is 1ml.
Time of water injection: can set on the panel of controller
Seal after water injected. Can pump out the air from bag, but not vacuum 100%.
New packing bag arrived at the packing area when sealing
After sealing, the next packing bag will be the position of packing. And the bag taking device will take new packing bag for ready.
Can inspect short shot, missing teeth, flash
Two options
① If defective cable tie detected, take out the whole shot
② Cut the defective cable ties if the amount of defective cable ties is not more than 3 pcs. The whole shot will be take out if defective cable ties are over 3 pcs. Cutting tool: rasp(file) Cutting and picking time: 2s per pc.
Add I/O signals. To realize the communication between packing machine, robot arm, and injection machine
Inform the brands and models, will check and adjust price based on purchasing cost
The counting is accurate. There may be the error of 1 or 2 pcs if there is the brushed plastic.
1. Industrial Camera, MINDVISION brand .
Can set the length as per customer’s standard.
1. At this period, we don’t have quiet accurate data. The reasons are below.
1) Most of the customers ordered standard packing machine, not include visual inspection.
2) Short shot is easy to be solved when manufacturing cable ties and they aim to reduce labor cost and don’t have high standard for the qualified rate.
3) Visual inspection is high price. Standard packing machine can meet their requirement.
2. Different raw materials, the shrinkage rates are different. And the shrinkage rate affected by the temperature, moisture of air.
3. The packing machine is going to alarm and stop running frequently if set strict standard like 1mm.
The key point that affects accuracy is the shrinkage of plastics. The cable ties will shrink after injection moulded, and the shrinkage rates are different.
In addition, the cable ties are pushed forward and shot by camera at the same time, which may affect the inspection precision.
Suggestion: Solve SHORT SHOT& FLASH from injection machine, mould and parameter setting.
No signales for standard packing machine. We can add I/O signals as per customer’s requirement.
Length of single side is not longer than 500mm, means cable tie length+ runner length. Workable for the cable ties with the length no more than 350mm.
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