Common Problems and Solutions in the Use of knife plate spring pads

During the actual use of the knife plate spring pad, due to the influence of various factors such as selection, installation, maintenance, and process parameters, problems such as elastic attenuation, local wear, and installation offset are prone to occur. These issues not only affect the die-cutting quality but may also shorten the service life of the spring pad and the knife plate, increasing production costs. The following objectively sorts out common problems, their causes and targeted solutions to provide reference for enterprise production.

Common Problem 1: The elasticity of the elastic pad decays too quickly, and the die-cutting pressure is insufficient. The main causes include: improper selection, using elastic pads with too high or too low hardness, which leads to the inability to restore elasticity after long-term deformation; Excessively high ambient temperature accelerates the aging of the elastic pad material. Excessive die-cutting pressure, exceeding the elastic bearing range of the elastic pad, causes permanent deformation. Solution: Precise selection. Based on the processing material and process parameters, choose the elastic pad that is suitable for hardness and material. In high-temperature scenarios, silicone elastic pads should be given priority. Optimize the die-cutting process parameters, adjust the pressure and speed, and ensure that the elastic pad operates within the elastic tolerance range. Improve the usage environment, avoid the elastic pads being exposed to high temperatures and direct sunlight for a long time, regularly check the elastic condition of the elastic pads, and replace them in time if attenuation is found.

Common Problem 2: The local wear of the elastic pad is severe, affecting the uniform pressure transmission. The main cause is: the edge of the knife plate is sharp, and it has been rubbing against the local area of the elastic pad for a long time. During installation, the position of the spring pad and the knife plate was offset, resulting in excessive local force. Hard debris mixed in the processing material causes local scratches on the spring pad. Solution: At the position corresponding to the sharp edge of the knife plate, select a more wear-resistant elastic pad material or increase the thickness of the elastic pad to reduce friction loss. Standardize the installation process and use positioning tools to ensure that the spring pad is precisely aligned with the knife plate to avoid offset. Strengthen the pretreatment of processing materials, remove debris and prevent the elastic pads from being scratched. Regularly inspect the wear condition of the spring pads. Replace the spring pads with severe local wear locally to prevent overall failure.

Common Problem 3: The elastic pad is installed offset or falls off, resulting in die-cutting deviation. The causes include: the size of the spring pad does not match the installation slot of the knife plate, being either too large or too small; It was not firmly fixed during installation and shifted due to vibration during die-cutting. The surface of the elastic pad is contaminated with oil stains and paper scraps, resulting in a decrease in adhesion. Solution: Customize elastic pads of the appropriate size to ensure precise fit with the installation slot; Use special fasteners (such as clips, adhesives) to fix the spring pads to enhance stability. Regularly clean the spring pad and the installation groove of the knife plate, remove oil stains and paper scraps, and enhance adhesion. Before starting up, check the installation status of the spring pad. If any offset or detachment is found, adjust and fix it in time.

Common Problem 4: The elastic pad adheres to the material, affecting the waste discharge efficiency. The main causes are: the surface of the elastic pad is too smooth or contaminated with sticky impurities; The processing materials are films with strong adhesiveness, leather, etc. The hardness of the elastic pad is too low, and the contact area with the material is too large. Solution: Select elastic pads with anti-slip treatment on the surface, or apply a small amount of mold release agent on the surface of the elastic pad (which must comply with product hygiene standards); Clean the sticky impurities on the surface of the elastic pad to keep it clean. Replace the elastic pad with one of moderate hardness to reduce the contact area with the material. Optimize the waste removal process and pair it with auxiliary waste removal devices to enhance the efficiency of waste removal. In addition, if the spring pad shows problems such as cracking or damage, it is mostly due to material aging or improper use. The spring pad should be replaced immediately, and the usage environment and process parameters should be checked to avoid the recurrence of similar problems.