PM Sintered Parts For Printing Machine Cylinder Tooth Pad
When the printing press is working, the paper is conveyed by matching the teeth of the paper and the pads to hold the paper. When the paper is conveyed, it is not allowed to shift between the teeth and the pads due to insufficient grip force, otherwise, the printing quality will be seriously affected. At the same time, it is not allowed to damage the paper due to excessive holding force.
Product Introduction
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PM sintered parts for printing machine cylinder tooth pad |
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Item |
Material |
Production Process |
Sintering Temperature |
Mold |
Custom |
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Powder metallurgy for printing machine cylinder tooth pad |
Carbide |
Powder metallurgy pressing |
1680℃ |
To be customized |
Yes |
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Available Materials |
Low carbon stainless steel, titanium alloy (Ti, TC4), copper alloy, tungsten alloy, hard alloy, high temperature alloy (718, 713) |
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Smoothness |
Dimensional accuracy |
Product density |
Appearance treatment |
Appropriate weight |
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Roughness 1～5μm |
(±0.1%～±0.5%) |
7.3-7.6g/CM³ |
According to customer requirements |
0.03g～400g) |
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The utility model relates to a tooth pad structure of a printing machine, which is particularly suitable for the paper-biting tooth pad of a sheet paper offset printing machine.
When the printing press is working, the paper is conveyed by matching the teeth of the paper and the pads to hold the paper. When the paper is conveyed, it is not allowed to shift between the teeth and the pads due to insufficient grip force, otherwise, the printing quality will be seriously affected. At the same time, it is not allowed to damage the paper due to excessive holding force. In order to meet the above requirements, in some printing presses, such as tooth pads, a layer of elastic material is covered on the base of rigid material. This structure cannot guarantee the stability of its gripping force because the rigid paper teeth are engaged with the elastic tooth pad surface, and its coating material is easy to peel off. PM sintered parts for printing machine cylinder tooth pad also adopt tooth pad structure, which is to process grooves intersecting in two directions on the surface of a rigid substrate, and inject elastic material into the groove. Although this structure solves the problem of gripper However, because the elastic material in the groove is connected, once the elastic material on the edge has not adhered firmly, it will cause the entire injection molding material layer to peel off, affecting the quality of the product (printed matter).
The purpose of the utility model is to provide a gripper structure with stable gripping force, no displacement between the gripper teeth and the gripper, and no damage to the paper or influence on the quality of printed matter due to excessive gripping force.
The purpose of this utility model is a kind of tooth pad structure of printing machine realized in this way, which is especially suitable for sheet-sheet machine offset printing machine biting tooth pad. Into elasticity to form a plane made of rigid and elastic materials that occlude with the teeth of the bite paper.
The purpose of this utility model can also be further realized by the following technical measures.
In the aforementioned tooth pad structure, the elastic material filled in the groove is polyurethane.
The elastic material in the utility model is completely embedded in matrix 1 of the rigid material, which is equivalent to filling the elastic material in a rigid skeleton. The elastic material ensures the required friction force, while the rigid material protects the elastic material from the occurrence of permanent deformation while ensuring the stability of the gripper force. In addition, the elastic material can be well fixed in the rigid matrix without peeling off. Therefore, after adopting this scheme, the paper of the printing machine is not damaged and the quality of the printed matter is high.
This plane composed of rigid and elastic materials is the occlusal surface with the paper teeth, that is, the surface in contact with the paper. This surface is matched with the teeth of the rigid material. When biting the paper, the elastic surface will generate greater friction, so the paper can be firmly held, and because part of the rigid surface of the tooth pad is in contact with the teeth, It protects the elastic surface from permanent deformation due to frequent occlusion, and at the same time ensures the stability of the gripper force, so the quality of the printed product is high. In addition, since the elastic material is filled in the groove of the rigid base, the elastic material is firmly fixed without peeling off, which prolongs the service life of the equipment.
Rights request
1. A tooth pad structure of a printing machine, especially suitable for the paper tooth pad of a sheet-fed offset printing machine, which is characterized in that a groove is processed on the surface of a rigid material substrate, and an elastic material is filled in the groove to form a rigid The plane that is made of elastic material and bites the teeth of the paper.
2. The dental pad structure according to claim 1, is characterized in that the elastic material filled in the groove is polyurethane.
Abstracts of the patent The utility model relates to a tooth pad structure of a printing machine, which is especially suitable for the paper tooth pad of a sheet paper offset printing machine. It is characterized in that a groove is processed on the surface of a rigid material substrate, and elastic Material, forming a plane composed of rigid and elastic materials that occludes with the teeth of the bite paper. Its advantage is that the gripper force is stable, and there is no displacement between the teeth and the tooth pad, so the paper is not damaged, the quality of the printed product is good, and the elastic material does not peel off.
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