Automatic weighing and packaging device and method for fine powder materials

Abstract

The invention relates to the field of automation, particularly relates to an automatic weighing and packing device for a fine powdery material and a method thereof, and solves the technical problems of providing the automatic weighing and packing device for the fine powdery material and the method thereof which are precise to pack and convenient to stack. The device comprises a coarse feeding device, a shaping and vibration transportation device, a measuring and weighing device and an edge-fold sewing device, wherein the coarse feeding device is arranged above the shaping and vibration transportation device; the coarse feeding device comprises a feeding control system, a support, a spiral feeder, a quantitative hopper and a bag holder, wherein the spiral feeder, wherein the quantitative hopper and the bag holder are sequentially arranged on the support, and the spiral feeder is connected with the upper end of the quantitative hopper; the shaping and vibration transportation device comprises a belt conveyor and a vibrator; the measuring and weighing device comprises a belt weigher, a feeder, a spiral feeder and a lifting sleeve, wherein the spiral feeder and the lifting sleeve are installed on the feeder. The automatic weighing and packing device provided by the invention has the effects of being quick and accurate in material packing efficiency and convenient to stack.

Description

technical field [0001] The invention relates to the field of automation, in particular to an automatic weighing and packaging device for fine powder materials and a method thereof. Background technique [0002] At present, the automatic packaging system used in the automatic packaging industry is mainly the automatic packaging method of the net weighing method and the automatic packaging method of the gross weighing method. These two packaging methods are only suitable for granular materials, powdery materials with better crystallization, and powdery materials with small changes in specific gravity without air inclusions in the materials. In China, in addition to the relatively high-value chemical products that are automatically packaged with valve bags with high import costs, other industrial products of powdery materials with low value and little change in specific gravity are automatically packaged using the above two methods. The powder materials (4 million tons of feed...

AI Technical Summary

Problems solved by technology

The disadvantages are: (1), due to the addition of an intermediate transition hopper between the weighing hopper and the packaging bag, there is uncertainty in the amount of powdery materials that pass the measurement and weighing in the intermediate transition hopper, which affects the packaging accuracy ; (2) The volume of the weighing hopper is fixed and cannot adapt to the change of the specific gravity of the material. It may appear that the hopper is full before reaching the weight that needs to be weighed.

The advantage of this method is that a set of feeding device can guarantee a set of packaging weighing system, and the packaging accuracy is guaranteed compared with the net weight method; the disadvantage is that the packaging efficiency cannot be improved.

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