As we know that the card slabs are very popular these years. For card slabs, there are different kinds of names like pokemon cards, trainer cards, sports cards, trading cards, PSA cards, SGC cards, BGS cards, SCG cards. Only last year, we, Dongguan mingyang has exported hundreds of welders out to more than 50 countries, and the welded products all card slabs. We helped customers from different countries to start their own business, if you want to know how to start your card slabs business, you can review our last two news. In this article, we mainly talk about the card slabs welding common problems and solutions.
All below solutions are based on the card slabs like the PSA cards, SGC cards, BGS cards, SCG cards are in good quality, the plastic cases ultrasonic welder and the ultrasonic horn are good and matched well.
Unsealed
During the card slabs welding process, you can hear the ultrasonic sound”beep”, but after welding, the card can be easily opened by hands, here are the common reasons and solutions.
1. Ultrasonic horn position is too high: If ultrasonic horn position is above the card slabs, the welder doesn’t work on the card slabs, or just slightly work on the slabs; To check it, please switch the working model from auto to manual, and then press start buttons(normally two green buttons) at the same time to make the ultrasonic horn down, and then please see if the horn is really above the slabs, if so, please adjust the limit screw slightly to make the horn down just on the slabs, it is ok. Then you can switch the working model back to auto, and try to weld until welding effect is strong.
2. Delay time: Delay time means the time from pressing two green buttons at the same time to the ultrasonic wave start works. If the delay time is too short, the ultrasonic horn haven’t contact the slabs, and the ultrasonic ends, so the slabs is unsealed. The best way to solve it is to hear the ultrasonic sound”beep”, when you hear the sound, the horn work the slabs, it is best.
3. Amplitude: amplitude is related to the output power, if the output power is not enough, the slabs are unsealed. Adding suitable amplitude can solve the unsealed problem.
4. Weld time to too short: weld time means the time from the ultrasonic start work to the ultrasonic ends work, if the weld time is too short, the two parts haven’t weld together, will also leads to poor sealing effect; we can add the weld time and then try until the weld effect is good.
White marks
1. If the white marks is slight, please use a plastic film to cover it; When you received the card slabs, each one is covered by the plastic film, you can use that one to cover the slabs and then tried, the slightly white mark is gone. Reason: Ultrasonic welding is high frequency vibration waves transferring to the surfaces of two objects to be welded. Under the condition of pressure, the surfaces of two objects rub against each other to form fusion between molecular layers. A plastic film prevents scratching the surface of the plastic shell as it rubs against each other.
2. If the white mark is heavier, and it can’t be solved by covering a plastic film; The easiest way is to increase the suitable amplitude, and see the welding effect. If still have white mark, reducing the weld time to find the balance.
Damaged mark
1. Reduce the weld time, if the weld time is too long, the card slabs might be damaged.
2. Adjust the limit screw, if the ultrasonic horn position is too low, the card slabs might be damaged, in this situation, we can adjust the limit screw.
3. Adjust the downspeed, if the downspeed is too fast, the card slabs might be damaged by the impact force of descent, in this situation, we can adjust the downspeed to make it slower.
NOTE: The limit screw and the downspeed are all screws, and it need the experience to solve the problem fast, if you don’t have experience, the easiest way is to adjust the weld time, when you can’t deal with the problem by adjusting weld time, you can adjust limit screw or downspeed, but need to adjust very slightly each time to find the balance to get a perfect welding effect.
not flat ultrasonic horn
How to judge if the horn is not flat, when you have weld many cases, and the white mark place is always at one side or one corner, or one side or one corner is always open, in this way, we can confirm that the ultrasonic horn is not flat. In this situation, the easiest way is to adjust four horizon screws to make it flat. If you tried many times, still can’t solved it, you’d better to remove the horn and reinstall it.
Above all, for us, before shipment, all parameters and screws of card slabs welding equipment have been adjusted well before shipment, please do not change them especially the screws during the using process. It is very important. Once you meet any problem during the welding process, please contact with your welder supplier at first to solve it. And all after-sales needs patience to solve problems.
Post time: Apr-13-2022