Parallelogram connecting-rod pressing-wheel film feeding mechanism of vertical quantitative filling packer

Abstract

Disclosed is a film conveying and rolling mechanism with parallelogram connecting rod pressing wheel, which is used in vertical quantified filling packaging machine, comprising a towing belt, a bearing seat 1, a swing arm and a cylinder. The film rolling mechanism is driven by a motor and is separated into two shafts through synchronizing wheels which are fixed on a frame; swing rods are driven to rotate by the cylinder driving the swing arm, and the swing arm drives the swing rods to swing left and right, making the left and right synchronizing wheels fixing plate be close to the center; two symmetric parallelogram mechanisms are formed by the swing arm, the bearing seat, a pivot 1, a pivot 2 and a bearing seat 2; the connecting rod is fixed on a front panel by the pivot 1; the pivot 2 is connected with the synchronizing wheel fixing pate. The driving mechanism of the invention is driven by a motor which make the film drawing much more stable; the swing arm is driven by the cylinder to make the left and right synchronizing wheels fixing plate be close to the center; the transmission system is independent from the working environment through the bearing seat; the film drawing mechanism can adjust the relative position between the towing belt and a shaper. After adjustment, the shaper of different specifications can be adopted.

Description

technical field [0001] The invention relates to a film rolling mechanism for traction and conveyance of a vertical quantitative filling and packaging machine, in particular to a film rolling mechanism for a vertical quantitative filling and packaging machine with a parallelogram connecting rod pressing wheel. Background technique [0002] At present, the traction and conveying film rolling mechanism of the traditional vertical filling and packaging machine is: first, the driving mechanism of the traction and conveying film rolling mechanism is generally driven by a motor, which is divided into two shafts through a universal coupling, or driven separately by two motors Two shafts; these two schemes, due to the constant change of speed during the transmission, will cause the pressing force of the pressure wheel to be unstable during the rotation process, resulting in instability of the stretched film; and the second scheme is costly and wastes production Cost; Second, in order...

AI Technical Summary

Problems solved by technology

[0002] At present, the traction and conveying film rolling mechanism of the traditional vertical filling and packaging machine is: first, the driving mechanism of the traction and conveying film rolling mechanism is generally driven by a motor, which is divided into two shafts through a universal coupling, or driven separately by two motors Two shafts; these two schemes, due to the constant change of speed during the transmission, will cause the pressing force of the pressure wheel to be unstable during the rotation process, resulting in instability of the stretched film; and the second scheme is costly and wastes production Cost; Second, in order to adapt to the packaging specifications of different bag widths, the traction and conveying roll film mechanism uses a cylinder to drive the left synchronous wheel and the right synchronous wheel to move along the linear guide rail, so that the distance between the left synchronous wheel and the right synchronous wheel can be adapted to different bags. The drive of this scheme makes the transmission system communicate with the outside world. The dust from the outside will pollute the transmission system and greatly reduce the service life of the transmission system. In order to separate the transmission system from the working environment, a set of sealing system is generally required. Sealing; Third, the film pulling mechanism of the traction and conveying roll film mechanism is usually composed of a passive synchronous wheel, an active synchronous wheel, and a synchronous belt. The passive synchronous wheel is fixed on the synchronous wheel fixed plate, and the synchronous wheel fixed plate is usually locked with bolts. If you adjust the relative positional relationship between the synchronous belt and the former, you need to loosen the bolts that fix the synchronous wheel fixed plate, and then adjust the synchronous wheel fixed plate. The adjustment process is cumbersome and difficult to grasp the adjustment range, and often cannot be adjusted in place at one time.

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