Bag clamping mechanism for packing scale

Abstract

The invention relates to a bag clamping mechanism for packing a scale. The bag clamping mechanism comprises a first bag clamping arm and a second bag clamping arm which are symmetrically installed on the left side and the right side of a discharging hopper. The upper end of the first bag clamping arm and the upper end of the second bag clamping arm are rotationally connected with the discharging hopper through pin shafts respectively, and the lower end of the first bag clamping arm and the lower end of the second bag clamping arm are clamping parts used for clamping a packing bag. The bag clamping mechanism is characterized in that a first air cylinder and a second air cylinder are installed between the first bag clamping arm and the second bag clamping arm; the first air cylinder and the second air cylinder are located on the front side and the rear side of the discharging hopper respectively; a cylinder body of the first air cylinder and a cylinder body of the second air cylinder are rotationally connected with the middle of the second bag clamping arm through pin shafts; a piston rod of the first air cylinder and a piston rod of the second air cylinder are rotationally connected with the middle of the first bag clamping arm through pin shafts; and polyurethane blocks are arranged on the inner sides of the clamping parts. According to the bag clamping mechanism, the bag clamping arms on the two sides are controlled at the same time through the same air cylinder, it is ensured that the working takt of the bag clamping arms on the left side and the right side of a discharging port is consistent, and it is ensured that the weighing process and the packing process of the packing bag are stably conducted.

Description

technical field [0001] The invention relates to a bag clamping mechanism, in particular to a bag clamping mechanism for a packing scale, belonging to the technical field of mechanical equipment. Background technique [0002] Quantitative packaging scale is used for automatic quantitative packaging in industrial and agricultural automation production. The whole weighing process is controlled by computer and completed automatically. It has the characteristics of fast weighing speed, high weighing accuracy, labor saving, labor saving, simple operation and convenient maintenance. [0003] The packaging scales in the prior art mainly have the following defects: in the prior art, the discharge port of the packaging scale is generally straight, and the bag clamping device of the packaging machine is generally installed with a cylinder on both sides of the discharge port. The air cylinder controls the bag clamping device on one side respectively. After the bag clamping device clamp...

AI Technical Summary

Problems solved by technology

After the bag clamping device clamps the packaging bag, the discharge door of the scale body is opened, and the material enters the packaging bag during the loading process; since the material of the packaging bag is relatively soft, and the bag clamping devices on both sides of the discharge port are respectively controlled by The cylinders on both sides are controlled, and there is an inconsistency in the working rhythm of the left and right cylinders, which causes the shaking of the packaging bag during the filling process and affects the stability of the packaging process. In severe cases, the packaging bag may fall off from the bag clamping device. The phenomenon of polluting the operating space and wasting materials

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