Can body welder is the core machine for three piece welded cans, the can body blank is rolled then welded as cylindrical can body, the welding quality will affect the following process and determine the can quality. If the weld seam is not beautiful or leaking, then the can will be rejected on the end of production line by leak tester of metal cans.
Managing a can making factory, you need to understand the welder knowledge, this will help you to reduce business risk, improve production efficiency, increase investment income, and gain an foothold on the market. In the article, we will explain the know how of welder for your decision making, ensuring that you can choose the right machine for your future plan.
If you want to choose can weld machine, the following factor should be considered:
Aerosol Cans
The aerosol can in common is longer than the food can, paint can, so for the same production speed, the welding linear speed of welder for aerosol cans is a little faster than other products.
Metal Pails
The conical pail or cylinder pail is big in diameter, so the pail body blank is big in size, then the stack of tinplate of pail body blank is stacked on the roller of roll forming station, then the tinplate is sucked from the top of stack piece by piece continuously.
Metal Cans
For the metal cans, if the speed is lower, we can design the welder as top sucking, if the speed is higher, then the can body welding machine can be designed as bottom sucking, the stack of can body blank is put on the magazine of roll forming station, then the suction cups suck the tinplate from bottom of stack piece by piece continuously.
Low Speed
If your production quantity is not so huge, the speed requirement is not high, then you can select our low speed welder or back feeding manual can welder.
Medium Speed
If the speed is among in 150-300 cans per minute, you can select our medium speed can body welder, it can meet your requirement.
High speed
If you need to supply lots of metal cans to customer in limit time, the high speed can body welder is the reasonable choice, it can produce tin cans at 600cpm.
Practice is the criterion for testing truth, the weld seam quality is the criterion for testing welder. When the can blank is welded, you can make appearance inspection first, check whether the welding seam is continuous and uniform, then use tear test to check the welding quality as mentioned in our instruction.
When the can body welding machine is running, you can check the distance between each two cans while conveying, this will affect the copper wire utilization rate.
After the welding, the copper wire is chopped in common, you can check the tin coating on copper wire, this is caused by melt of tinplate, then you can know the welding quality.
When the can body is completed by welding, check whether there are long burs on both sides, this point can reflect the electric current and time delay design of welder, also check whether there burs on the surface of weld seam, this is the key factor of weld seam.
For the conical pails, necking pails or square cans, some machine suppliers design the pail welder as seam down, when the pail side seam is welded, the weld seam is downward, and call it by the sounding nice name of “comply with the principle of gravity downward”, this is stupid, because in this industry, the metal sheet is thinner and thinner, the weight is lighter and lighter, even the tinplate is heavy, the roll forming station can roll it fully, if the rolling machine can not roll the tinplate just due to its big size and need to utilize the gravity, then the welder is poor, and for the seam down welder, another problem you need to avoid, that is the splash during welding will fall down on the inside of weld seam, and then coated by the next station, so the splash dirty will be mixed with the wet lacquer on the inside of weld seam, the whole set of metal pail becomes non good products. This is why we design the pail welder as seam up identical with our common can welder.
In this can making industry, it emphasizes personalized design for detail project, if you need the can welding machine, please inform us your can detail, and we will offer right machine to you. Thanks for your reading, all the best!