A device for stopping and variable-speed double-sided welding of packaging bags based on the principle of leverage

Abstract

The invention relates to the related technical field of logistics, and discloses a device for stopping and variable-speed double-side welding of packaging bags based on a lever principle. The device comprises a welding chamber, wherein a rotating wheel is movably connected inside the welding chamber; the rotating wheel and a ratchet wheel rotate eccentrically to cause an upper welding rod and a lower welding rod to carry out intermittent up-and-down synchronous welding on the packaging bags, so that the condition of incomplete welding is avoided, and parts, which do not need to be welded, of the packaging bags are prevented from shrinking and deforming due to the heat of the welding rods; the positions of a first main conical wheel and a second main conical wheel are moved, a first gear ora second gear drives a driven wheel to rotate, the movement speed of the driven wheel is changed, and the effect of changing the frequency of welding the packaging bags is achieved; and a movable block is not affected by the packaging bags and is lifted to drive an arc block to be engaged with the ratchet wheel, the ratchet wheel cannot rotate, the upper welding rod and the lower welding rod stopmoving and repeated direct contact is avoided, so that the conditions that the upper welding rod and the lower welding rod are abraded, the welding effect is reduced, and even welding is impossible are avoided.

Description

technical field [0001] The invention relates to the technical field related to logistics, in particular to a device for stopping and variable-speed double-sided welding of packaging bags based on the principle of leverage. Background technique [0002] Logistics refers to the circulation process of goods from the supply place to the receiving place. General logistics includes transportation, storage, loading and unloading, handling, packaging, circulation processing, distribution, information processing and other processes, so that people can get the corresponding price at the right time and place. The required products, for the production industry, realize the mobility of production, improve production efficiency, and bring great convenience to people's lives, such as moving, luggage consignment, and online shopping. Among them, express delivery is the most common logistics. To avoid damage to goods during transportation, packaging bags are often used to wrap goods or fill ...

AI Technical Summary

Problems solved by technology

[0003] General packaging bag production equipment uses single-sided welding when welding, and the packaging bag may not be welded successfully, which reduces the protection effect of the packaging bag on the article, and the size of the welding is simplistic, which cannot be used for articles of different sizes. Effective protection, the filling of the box is insufficient, the staff needs to pay attention to the welding volume of the packaging bag during the welding process, and the machine needs to be stopped in time when the welding of the packaging bag is completed, otherwise the welding rod will be damaged, which is not conducive to the welding of the packaging bag and affects later use

[0004] Aiming at the deficiencies of the prior art, the present invention provides a device based on the principle of leverage to stop and change the speed of double-sided welding of packaging bags. It has the advantages of double-sided and multi-size welding and automatic stop after welding, and solves the problem of welding problems. The problems of completeness, single welding size and damaged welding rod make the upper welding rod and the lower welding rod continuously weld the packaging bag up and down synchronously, avoiding the incomplete welding of the packaging bag caused by single-sided welding, and preventing the welding rod from always being in the Above the packaging bag, the heat of the welding rod itself will shrink and deform the packaging bag that does not need to be welded, affecting the later use effect, causing the first gear or the second gear to drive the driven wheel to rotate, causing the movement speed of the driven wheel to change, thereby To achieve the effect of changing the frequency of welding packaging bags, it is convenient to obtain packaging bags of different sizes, so that the ratchet cannot rotate, so that the upper welding rod and the lower welding rod stop moving. In the case of no packaging bag, the upper welding rod and the lower welding rod are avoided. Repeated direct contact will cause the upper and lower welding rods to wear, reduce the welding effect, or even make it impossible to weld

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