Cropping device

Abstract

The invention belongs to the field of cropping equipment, and discloses a cropping device. At least two components of a cutter, a bag pressing piece, a bag twisting piece and a heat isolation piece are included. A rotary main shaft is arranged. A transmission structure for converting the rotation movement of the main shaft into the linear movement or for transmitting the rotation movement of the main shaft is arranged between the main shaft and at least two components. A rotary power source is adopted in the cropping device, a traditional air cylinder linear driving manner is replaced, the structure design can be optimized, the equipment size is reduced, and assembling and maintaining are convenient; and under the coaxial situation, the two ends of the cutter can act more easily, stress iskept consistent, and the cropping equipment has better action stability and can adapt to the occasion where the action speed is high.

Description

technical field [0001] The invention relates to the field of cutting equipment, in particular to a cutting device. Background technique [0002] Cutting equipment is a commonly used device for cutting plastic bags, cloth and other materials. Usually, a cold knife or a hot knife is used, and the opening of the cutting part of the hot knife is easy to stick. Its internal mechanism generally includes a mechanism for separating the upper and lower layers of the cut that is glued after cutting with a hot knife. , Cloth and other items to keep the flattening mechanism and heat insulation mechanism for heat insulation. [0003] In the prior art, one of the major categories is to link the flattening mechanism with the cutting mechanism installed by the hot knife: the flattening mechanism and the hot knife share more than one (including the original number) cylinders or hydraulic cylinders as driving elements, and the flattening mechanism Or the thermal insulation mechanism and the...

AI Technical Summary

Problems solved by technology

[0004] In this type of structure, there are the following disadvantages: 1. The equipment is bulky: due to the large volume of the cylinder or hydraulic cylinder (used in cutting equipment), and the movement stroke of the cylinder itself, it needs to occupy a large working space , which also makes it difficult to reduce the size of the device

2. The number of driving cylinders is large: the cylinder is a single-point acting device, and it needs at least two to maintain balance when it is applied. Further accumulating and counting the cylinders used in the rubbing mechanism together, the number of cylinders will be no less than 4, resulting in production High cost and use cost

3. The structure is complex, there are many parts, and it is difficult to maintain: since the cutting mechanism and the flattening mechanism / heat insulation mechanism are on two different vertical planes, a transmission connection structure is required to make the two linked; moreover, the rubbing mechanism adopts an independent design , also has corresponding installation, transmission and other structures

In this category, there are the following disadvantages: 1. There are a large number of cylinders; 2. It is necessary to lay cylinder pipelines, which is inconvenient for installation and maintenance; 3. The response speed of the cylinder is slow. At 50 times / min), the cylinder obviously cannot keep up

[0006] It can be seen that the cutting equipment in the prior art has problems such as many parts, relatively scattered structure, poor integrity, low work efficiency, excessive equipment volume, and high cost.

Moreover, there is also the problem of slow response

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