Clamping device used for large plastic pipe cutting machine

Abstract

The invention relates to a clamping device used for a large plastic pipe cutting machine. The clamping device comprises upper clamping units and lower supporting wheel units, each upper clamping unit comprises an upper fixing plate, a pushing cylinder, upper guide columns, an upper sliding seat and a Haff, each pushing cylinder and the corresponding upper guide columns are fixed on the corresponding upper fixing plate, the upper guide columns are arranged on two sides of the pushing cylinders, the bottom end of each upper sliding seat is slidably connected with the corresponding upper guide columns while the upper end of the same is connected with the corresponding pushing cylinder, each Haff is connected at the upper end of the corresponding upper sliding seat, each lower supporting wheel unit comprises a lower fixing plate, a screw lifter, lower guide columns, a lower sliding seat and a roller, each screw lifter and the corresponding lower guide columns are fixed on the corresponding lower fixing plate, the lower guide columns are arranged on two sides of the lower sliding seats, the bottom end of each lower sliding seat is slidably connected with the corresponding lower guide columns while the upper end of the same is connected with the corresponding screw lifter, and each roller is connected at the upper end of the corresponding lower sliding seat. Compared with the prior art, the clamping device has the advantages of being simple to operate, convenient to maintain and capable of guaranteeing a plastic pipe not to deform obviously.

Description

technical field [0001] The invention relates to a clamping device for a cutting machine, in particular to a clamping device for a large plastic pipe material cutting machine. Background technique [0002] At present, there are two types of clamping devices for plastic pipes on the market: [0003] (1) Aluminum Hafur clamping device: This is a kind of clamping device driven by a cylinder, so that two pieces of aluminum semicircular Hafur move towards each other through the guiding effect of the guide post, and at the same time, it is adjusted by the limit block fixed on the guide post. The clamping depth of Hafur, so as to complete the clamping device of the entire clamping action. At present, the existing clamping devices of this structure on the market can be divided into two types: one is the clamping of the upper and lower aluminum harfurs, and this type of clamping device moves two pieces of aluminum harfurs towards each other up and down under the action of the cylinde...

AI Technical Summary

Problems solved by technology

The above two clamping devices have the following common disadvantages: 1. This kind of clamping device is generally only suitable for cutting machines with a specification below 800, and the specifications above 800 are too large, so processing is difficult and the cost is too high; 2. Each time the plastic After changing the pipe specifications, the pipe cutting machine is required to replace the aluminum harfur with the corresponding specification, which will seriously affect the work efficiency; 3. The aluminum harfur is easy to crush the surface of the plastic pipe when clamping the plastic pipe. Leave marks on the surface of the pipe, affecting the surface finish of the plastic pipe

This type of clamping device has the characteristics of simple structure and convenient maintenance, but this type of clamping device has the following disadvantages: 1. Because this type of clamping device has too few contact points with the surface of the plastic pipe during clamping, When it is thinner, it is easy to cause deformation of the plastic pipe surface, thereby affecting the cutting effect; 2. This type of clamping device lacks a precise limit function, and it is easy to cause insufficient force on the plastic pipe due to clamping speed errors and air pressure distribution errors during work. Even, the plastic pipe is not concentric with the cutting machine, thus affecting the cutting effect

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