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Sealing and Cutting Machine clamp design

Source:   Date:2014-10-28 15:46:34   Views:

In order to improve the efficiency of sealing and cutting machine shearing been proposed sided sealing and cutting machine to cut and faceted sealer cut. When sealing and cutting machine shearing, cutting edge in every two end packaging, then the packaging is equivalent in the clamped state, improve quality and productivity section. Both sealing and cutting machine shearing process during large quantities, packaging sealing and cutting machine cut a small section, to better reflect its advantages, high production efficiency, and the quality is also very good shear section. But the drawback is that they can co-sealing and cutting machine to cut the length of the blank can not be adjusted, a sealing and cutting machine shearing mold sealer cut only one kind of length of the blank, there is no single sealer cut so convenient, especially for large cross-section more is not suitable for packaging.
In summary, we understand sided sealing and cutting machine to cut, double-sided sealing and cutting machine to cut, multi-blade cutting machine closures cut advantages and disadvantages, they can get quite a sealer cut quality, but cut-sided sealing and cutting machine limit cut from the length and diameter of the package, easy to implement clamping, with economical and practical, easy to operate, easy to implement in production. We will be analyzed for a single sealer cut, determine the appropriate side sealing cutting machine shearing methods.
Material under shear include crack sealing and cutting machine generation, propagation, fracture and other processes. First of all materials and dynamic and static contact at the cutting edge cracks under load further expansion crack, crack down direction when the two met after the completion of the fracture behavior of the package. Whether the crack extended along a predetermined linear path determines the quality of the blank section. In addition, the quality and sealer section shear gap, clamping width and packaging with dynamic and static shear radial clearance between the blade has a direct relationship. In single sealer cut method, in addition to completely clamped sealer cut, the packaging of rotational degrees of freedom have not been limited or completely restricted, bending moments in the role sealer shear forming the blank occurs bending, so sealing and cutting machine shearing fracture surface and a predetermined sealer on the existence of a shear plane angle, in this unfavorable situation sealer cut, there will be cross-section tilt head sag and section injustice is high and other defects.
Packing sealer packaging and some geometrical parameters of shear mold sealer between the shearing process. In the bar of the sealing and cutting machine shearing process, the packaging of the fracture surface with its axis is not perpendicular. Assuming the inclination angle a, the radial clearance between the sleeve and the packing of A, the mold width L, the dynamic and static shear blade axial gap between the accounts, sealing and cutting machine for cutting the package diameter D, the role of the dead load of . Without considering the case of plastic deformation, sealing and cutting machines for the entire process of packaging end cut geometric relationships are as follows:
From where we can see the corpse with increasing tilt angle is small value increases. Therefore, when using single-sided clamping sealer cut way packaging sealing and cutting machine to cut, inevitably there will be a cross-sectional inclination.
Only a fully clamped sealer shear mode, there is neither deflection due to the bending moment sealer generated by the formation of shear force, nor the radial clearance between the package and the sleeve. Second, a small power = To, then, as long as the axial clearance makes the sealing and cutting machine shearing time.
You can get the best sealer cut quality. However, the above discussion does not consider the sealer shear deformation of the plastic deformation, no gap sealer eliminates the presence of shear is only sealing and cutting machine shearing section blank inclination from the geometric relationship, due to sealing and cutting machine shearing process plastic deformation is inevitable, even if no gap sealer pure shear, the inclination of the blank section still can not be completely eliminated, combined with other factors limit the manufacture of precision molds, and absolutely no gap sealer cut in actual production is difficult to achieve. In addition, if the gapless pure sealer cut, because the plastic deformation packing sealer shear zone material and appear to bite edge, adhesions and other phenomena, reduce abrasive life. But the shear clamping force, completely restrict its rotational degrees of freedom, eliminating packaging suffered bending moment, fracture orientation and desire to ensure that the movement of cutting edge packaging in the same direction, we can improve the sealing and cutting machine cut quality. Thus, complete pinch-cutting machine cut is the best way to cut one side sealer. For the section of plastic deformation caused by the tilt problem. We can optimize the shape and edge geometry, the use of technology and other means to reduce cracking.