Soft packaging bag sealing device

Abstract

The invention discloses a soft packaging bag sealing device. The soft packaging bag sealing device comprises a heat seal bottom plate and a hot pressing mold set part, one end of the heat seal bottomplate is fixedly provided with a servo motor in a supporting manner, an output shaft of the servo motor is fixedly connected with a rotating shaft through a coupler, the upper side of the heat seal bottom plate is fixedly provided with a front bearing pedestal and a rear bearing pedestal, the rotating shaft is provided with two screw parts with opposite rotation directions, a first sliding base and a second sliding base sleeve the two screw parts correspondingly, the hot pressing mold set part comprises a first hot pressing mold and a second hot pressing mold, the inner end of the first sliding base is supported with the first hot pressing mold through a first inner vertical plate, the outer end of the second sliding base is fixedly provided with a buffer unit in a supporting manner through a second mounting plate, the buffer unit is connected with the second hot pressing mold, the servo motor drives the rotating shaft to rotate, the first hot pressing mold can be get close to the second hot pressing mold, soft packaging bag sealing is achieved, and the buffer unit protects the servo motor against locking.

Description

technical field [0001] The invention relates to the technical field of packaging equipment, in particular to a mouth sealing device for soft packaging bags. Background technique [0002] The structure of the traditional soft packaging bag mouth sealing machine press mold is to use the upper hot pressing die and the lower hot pressing die to form a guiding sliding connection with the sliding seat of the upper die and the sliding seat of the lower die and the frame respectively, and the sliding seat of the upper die and the sliding seat of the lower die respectively The air cylinder or oil cylinder is driven to move up and down, and complete mold clamping, hot pressing or mold splitting. The disadvantages of the existing technology are that the noise of the cylinder or oil cylinder starting, stopping, reversing, etc. is large, and the response of the system components is lagging behind, especially the pressure change of the air source system. (For example, in the process of ai...

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Problems solved by technology

[0004] However, there are still shortcomings in the die structure of the soft packaging bag mouth sealing machine mentioned above. First, it is noisy and energy-consuming, and cannot be used for flexible packaging bags of different specifications; The impact is large, resulting in the destruction of the structure of the soft bag, the pass rate is low, and the production cost is indirectly increased

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