1.Frequent paper jams
Paper feeding problems: Folding machines with poor stability may have problems during the paper feeding process. For example, the feed roller's pressure may not be adjusted properly or its surface may be worn, preventing it from accurately gripping the paper. If the pressure of the paper feed roller is too high, the paper will be over-squeezed when entering, causing paper deformation and easy jamming; if the pressure is too small, the paper may not be fed into the machine smoothly. In addition, after the rubber or silicone coating on the surface of the paper feed roller wears, the friction force is uneven, and the paper is prone to skewing when feeding, leading to paper jams.
Paper jams during paper transport
In the paper transport channel, if the synchronization between the transport rollers of the folding machine is poor, the paper may accumulate or stretch during the transport process, leading to paper jams. For example, if the rotational speeds of different transfer rollers are inconsistent, and the front and rear ends of the paper have different speeds, the paper will wrinkle and get stuck inside the machine. At the same time, if the guide device in the transmission channel is not accurate enough, it cannot effectively guide the paper, and the paper will easily deviate from the normal path and get stuck at the edge or corner of the channel.
2.Poor folding accuracy
Inaccurate crease position: Folding machines with poor stability may have deviations in the crease position due to loose mechanical components or insufficient accuracy of the control system. For example, during the continuous folding process, the position of the folding knife may shift due to machine vibration or wear of transmission components. The crease that should be in the middle of the paper may be biased to one side, which will seriously affect the appearance and readability of products that require high folding accuracy, such as product manuals and brochures.
Non-standard crease angle
The crease angle of the folding machine needs to be precisely controlled to ensure that the folded pages are neat and beautiful. If the folding machine is not stable and reliable, the fold angles may be inconsistent. For example, when folding a three-fold page, the angle of the first fold and the second fold may not reach the standard 90 degrees or the preset angle, resulting in an irregular shape of the folded paper, which is inconvenient for subsequent binding. or use.
Poor folding flatness
When the mechanical structure of the folding machine is unstable, the paper may be subject to uneven pressure during the folding process, making the folded pages uneven. For example, the uneven surface of the folding plate or the uneven pressure distribution of the folding knife will leave wrinkles or bulges on the paper, affecting the quality of the printed matter, especially when folding thick paper or multi-layer paper, this situation may be more serious. obvious.
3.Reduced production efficiency
Frequent shutdowns for maintenance: Due to poor stability and reliability, folding machines are prone to various failures and require frequent shutdowns for maintenance. Each downtime not only interrupts current production tasks, but also takes time to find the cause of the fault and perform repairs. For example, after a paper jam, you need to clean the jammed part and adjust the machine parameters; if the mechanical parts are damaged, you need to replace the parts, which will lead to a lot of waste of production time and seriously reduce production efficiency.
Speed limitation
In order to reduce the occurrence of malfunctions, operators may reduce the operating speed of the folding machine. Because at lower speeds, the pressure, vibration and other factors of the machine are relatively small, the probability of problems will also be reduced. However, in this way, the production capacity of the folding machine cannot be fully utilized and cannot meet the demand for efficient production, especially when facing a large number of orders and urgent tasks, which will lead to delays in delivery time.
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