Sealing device of film bags

Abstract

The invention relates to a sealing device of film bags, belonging to the technical field of packaging appliances. The sealing device comprises a base, a bottom cover plate, a heat sealing mechanism and a box cover and is characterized in that heat sealing mechanism comprises a thermal insulation matrix, an electric heating plate, a pair of electric conduction contact pins and a compression spring; the center at the bottom of the thermal insulation matrix is provided with a compression spring seat hole, and two ends of the thermal insulation matrix are respectively provided with an electric conduction contact pin jack; the lower end of the compression spring is placed in a compression spring hole, and the upper end is positioned in the compression seat hole; the electric heating plate is laid on the upper surface of the thermal insulation matrix; the pair of electric conduction contact pins are respectively inserted in the electric conduction contact jacks; and the upper end of each electric conduction contact pin is electrically connected with the electric heating plate, and the lower ends of the electric conduction contact pins correspond to a first electrode plate and a second electrode plate. The technical scheme is beneficial to processing and assembling and has the advantage of convenient application.

Description

technical field [0001] The invention belongs to the technical field of packaging equipment, and in particular relates to a film bag sealing device. Background technique [0002] Film bag sealing devices can be seen in a large number of Chinese patent documents, and the typical ones belong to the mini type (mini type) or pocket type category, such as document A). The sealing machine recommended by the authorization announcement number CN2216964Y and document B). Authorization The electric heating sealing machine introduced by the notification number CN2330497Y and the document C). The electric heating sealing machine with a safety gate disclosed by the authorized notification number CN1218860C. The aforementioned document A) adopts the main and driven gears or toothed heating plates facing each other and meshing with each other to seal the bag mouth of the film bag. This patent solution has the advantage of simple structure, but when the main and driven gears or When the too...

AI Technical Summary

Problems solved by technology

However, the loose and compact structure is its defect. For example, the box cover mechanism is composed of three parts: the upper cover, the battery box cover and the rear cover (lines 6-8 on page 3 of the instruction manual), so the mold used to process the box cover mechanism Increased quantity and increased assembly links

As another example, the heat-sealing mechanism is composed of a heat-insulating base, a heating wire, a pair of side fixing sheets, a heat-insulating covering sheet, and a compression spring (the 17th line on page 2 of the specification and the specification of the patent figure 1 ), so it has a tendency to become more complicated. For example, from the perspective of economy, practicality and safety, there is still a need to improve the overall structure and the assembly relationship between parts.

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