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The relationship between cutting method and butt joint abrasive sanding belt
Feb 08, 2018

1, butt joint abrasive sanding belt angle classification

Butt joint adhesive tape (also known as the docking film, the end of support, tape, etc.) is divided into positive 55 °, 67 °, 75 ° and anti-angle 55 °, 67 ° five.

2, Belt incision classification

At present, the belt conversion production in China, the belt incision is divided into straight-line incision and curve interface (ie, S-type incision).

3, the difference between the positive and negative angle of the belt cutting

The positive and negative angles of the adhesive tape are relative to the cutting angle of the belt. For example, the front surface of the belt (abrasive part) is upward, and the different angle incisions to the right are positive angles; on the contrary, the different angle incisions that the cloth / paper base part is upwardly and rightwardly drawn are the opposite angles.

4, the type of belt cutting angle

Belt cutting is carried out according to the specifications of the process according to the specifications of the process. The cutting angle of the belt is divided into: the positive angles 55 °, 67 °, 75 ° and the reverse angles 55 °, 67 °, which corresponds to the fiber alignment angle of the adhesive tape.

5, the advantages and disadvantages of linear incision and curve interface

Currently in the domestic belt conversion production, belt incision using two ways, one is the normal positive and negative angle straight incision, one is S-type incision. The former applies to narrowband and medium-bandwidth, the latter for medium and ultra-wideband.

Positive and negative diagonal incision and flat adhesive tape with a compact, good flatness. According to the width of the belt to choose different angles of the incision, can enhance the belt interface tension, while minimizing the use of the belt in the production of different heart phenomenon, which reduces the belt jitter amplitude. The adhesive tape and the interface are equidistantly bonded at the same time. The contact surface is larger than the S-shaped incision. Especially, the distance between the incision and the edge of the adhesive tape is large, which makes the bonding effect more ideal.

However, the edge of the interface is closer to the edge of the tape and is less than ideal for the overall bond effect. Even if the S-notch is carefully produced in accordance with the process requirements, the adhesive The flatness of the junction area is also not positive, and the flatness of the diagonal cut is ideal. Therefore, the chattering phenomenon caused by the S-shaped cut belt during running is greater than that of the diagonal cut with positive and negative angles.

Of course, the positive and negative diagonal incision and S-type incision production process, must be required to cut the incision angle is accurate, to accurately control the grinding depth and the amount of grinding the average, there is a complete match incision docking. It is suggested that the manufacturer pay attention to staff training, strengthen equipment maintenance, pay attention to the precision of process parameters of each process and each equipment in production management, and ensure the stability and promotion of product quality.

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