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The causes of carrier tape jam and material jumping in the process of tape loading and braiding are analyzed

 

During the use of the carrier tape, there are often tape jams and material jumping, which annoys us. In view of this problem, we can analyze it in two aspects.

First, let’s talk about cassette tape. There are two forms of cassette tape. First, when loading electronic components, the full-automatic tape braiding machine can not be used normally. The load belt falls off at the guide gear and the gear idles without load. Second, although the gear has load during the normal operation of the braiding machine. However, the load belt cannot be moved or the drive is not in place. The load belt is broken. Or when the braiding machine is loading components, the components and pockets cannot be aligned. The spine between the carrier pockets was damaged and then fractured.

In the first case, it is mainly that the E and F of the carrier tape have shifted, or have exceeded their allowable range. Due to the braiding movement of the carrier belt, the guide gear is wrapped by the carrier belt, and the carrier belt guide hole drives the upper gear teeth to move and operate. If not, or it has been put on, but it is not close enough. It is easy to fall off and cannot carry the load belt, which is what we call the cassette. This kind of situation usually occurs in the belt carrier, B0 relatively limited products, such as LED belt carrier products.

In the second case, the positioning sealing block of the braiding machine is smaller than the outer width of the B0 direction of the belt. When the carrier tape passes through the positioning groove of the sealing block, the load is too large and the result is too tight. The belt carrying material is too thick and the forming is irregular, so it is not easy to pass through the tension mechanism of each braiding machine. The guide gear belt does not move the load belt, or the position to be moved is not enough. As a result, the belt carrying pocket cannot be aligned to the loading position of the element. The spine is damaged and then broken. To solve this problem, it is very simple to use paper objects. Slightly grind the two sides of the positioning groove of the sealing block to allow the carrier belt to pass without load. Or within the allowable range, changing the die to reduce the B0 direction can also be solved.

When it comes to tape skipping, there are also two cases. The first is material skipping before loading components. The other is the jumping of components after braiding. The material jumping before braiding is mainly due to the mismatch between the size of the carrier belt and the components. The sizes of A0 and K0 are too large, which generally has little to do with B0. Or the material hardness is not enough, which is easy to deform and affects the size. It is difficult to control when braiding. Material skipping will also occur. In this case, only the size and specification of the carrier tape can be changed, or the hardness of the material can be changed. In the second case, K0 is too deep. Just change the die K0 to shallow. But at the same time, we can’t ignore the more critical factors and the reasons caused by the improper use of upper belt. When sealing elements, especially very micro elements. It is required that the upper tape must be close to the surface of the carrier belt after sealing. If the load belt cannot be attached tightly, there is space between the load belt and the upper belt, which is bound to affect K0. Of course, it is easy to cause overturning, that is, material jumping. To improve this situation  in addition to the appropriate K0 of the die, the appropriate upper tape should also be selected.

Junan has more experience in the manufacture of carrier tapes in some cases that often occur. The ability to solve problems is also quite strong. As long as the sample passes properly, the product is relatively stable. You will also feel more comfortable and satisfied with it.