Folding roller of folding machine used for folding continuous sheets

Abstract

A folding roller of a folding machine used for folding continuous sheets comprises a fixed mandrel and roller body sleeved on the mandrel and rotating around the mandrel, wherein the roller body is a tube body with a hollow cavity. By adopting the structure of the folding roller formed by combination of the hollow roller body and the mandrel, a stable and constant-pressure vacuum cavity smartly formed in the roller body and defined by the upper surface of the mandrel, two separating ribs and the inner cavity surface of the roller body is communicated with external extraction equipment, so that multiple airflow channels do not need to be processed, the problem of communicating with the air due to periodic communication of the airflow channel and an air ring inlet is solved when rotating with the vacuum roller, and the power of the external extraction equipment is effectively reduced. The production cost is effectively lowered, the purpose of energy conservation and emission reduction is achieved, the air ring structure with high processing difficulty is saved on the basis of ensuring the tidiness and conformity of the processed finished products, the production efficiency of the paper processing is effectively improved, and the operation difficulty and strength of the worker are reduced.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a folding mechanism for producing folded continuous sheets such as facial tissues, paper towels, and non-woven fabrics. Background technique [0002] Existing folding rollers for folding machines used to fold continuous sheets all use a plurality of airflow channels in the roller body, and there are two sets of vacuum suction ports for paper feeding and folding on the surface of the roller body, each group of vacuum suction ports Arranged in one or more rows along the length direction of the roller body, and each group of suction ports communicates with the corresponding paper feeding airflow channel and folding airflow channel in the roller body, and an airflow channel conversion device is coaxially installed on at least one end of the roller body And an air ring with an air outlet and an air inlet connected to an external ventilation device. With the rotation of...

AI Technical Summary

Problems solved by technology

[0002] Existing folding rollers for folding machines used to fold continuous sheets all use a plurality of airflow channels in the roller body, and there are two sets of vacuum suction ports for paper feeding and folding on the surface of the roller body, each group of vacuum suction ports Arranged in one or more rows along the length direction of the roller body, and each group of suction ports communicates with the corresponding paper feeding airflow channel and folding airflow channel in the roller body, and an airflow channel conversion device is coaxially installed on at least one end of the roller body And an air ring with an air outlet and an air inlet connected to an external ventilation device. With the rotation of the folding roller body, each air flow channel in the roller body is periodically connected or disconnected with the air inlet of the air ring. However, since this kind of folding roller needs to be provided with an air flow channel consistent with the length of the roller body in the roller body with a length of 2 to 3 m, it needs to use deep hole drilling and other processing methods, which makes the folding roller difficult to process and expensive. Complicated structures such as airflow channel conversion devices and air rings are added at both ends of the roller, which increases its manufacturing cost and difficulty in operation and commissioning. The channel will communicate with the air when it leaves the vacuum working area, that is, the air inlet of the air ring, so each time it enters the vacuum working area, it needs to have enough time for pumping to re-form the vacuum channel. When the vacuum roller is running at a high speed , it needs a high-power air pump to work continuously, which not only increases the production cost, wastes energy, but also seriously restricts the folding speed of the folding rollers, affecting the production and processing efficiency

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