Improved vacuumizing sealing machine capable of automatically locking cover

Abstract

The invention discloses an improved vacuumizing sealing machine capable of automatically locking a cover. The improved vacuumizing sealing machine comprises an automatic cover locking mechanism, the automatic cover locking mechanism comprises a cover locking driving mechanism, at least two cover locking grooves and cover locking sliding blocks corresponding to the cover locking grooves, the cover locking grooves are matched with the cover locking sliding blocks in a buckled mode, the cover locking driving mechanism is matched with the cover locking sliding blocks in a transmission mode, and when the cover locking sliding blocks move relative to the cover locking grooves, an upper cover moves downwards; a vacuumizing device comprises a vacuumizing chamber and an air exhaust assembly, the vacuumizing chamber is arranged on the front side of the vacuumizing sealing machine, the air exhaust assembly is installed on the top of the front side of a lower base, the air exhaust assembly is movably provided with an air exhaust pipe, the air exhaust pipe is arranged in the vertical direction, and a vacuumizing pump is connected with the vacuumizing chamber and / or the air exhaust assembly; and the vacuumizing chamber is provided with a pressure relief opening, the upper cover and / or the lower base are / is provided with a pressure relief mechanism, and the pressure relief mechanism is matched with the pressure relief opening in a sealed mode. The cover locking does not need pre-pressing, the cover loosening does not need manual unlocking of a lock catch, the pressure relief force is large, two air exhaust devices are combined, the adaptability is high, the structure is simple, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of vacuum sealing machines, in particular to an improved vacuum sealing machine with automatic lid locking. Background technique [0002] Vacuum-packed products use vacuum pumping equipment to take away the air in the vacuum packaging bag, and then cooperate with the hot-melt device to heat-melt seal the opening of the vacuum packaging bag to achieve the purpose of vacuum sealing in the vacuum packaging bag, thereby keeping the food fresh and hygienic. [0003] The existing vacuum sealing machine with automatic lid lock includes an upper cover and a lower seat. Lock the upper cover and the lower seat; the existing automatic cover locking mechanism uses the lock buckle to lightly press and lock in advance, and then pulls the upper cover downward through the cover driving mechanism to achieve the purpose of locking, and when the cover is loosened , it is still necessary to manually release the lock to open t...

AI Technical Summary

Problems solved by technology

[0003] The existing vacuum sealing machine with automatic lid lock includes an upper cover and a lower seat. Lock the upper cover and the lower seat; the existing automatic cover locking mechanism uses the lock buckle to lightly press and lock in advance, and then pulls the upper cover downward through the cover driving mechanism to achieve the purpose of locking, and when the cover is loosened , it is still necessary to manually release the lock to open the upper cover, the operation is cumbersome, and the locking force is weak;

[0004] There are two kinds of existing vacuuming devices. The first type: the air extraction tube is inserted in the vacuum packaging bag for vacuuming. The mouth of the bag is placed in the vacuum chamber, and the vacuum chamber is vacuumed, so that the air in the vacuum packaging bag is pumped into the vacuum chamber, and the heat seal is directly carried out after the vacuum is completed; when the first structure of the vacuum When the vacuum sealing machine vacuumizes the textured bag, since the textured bag is still fully closed due to the textured support on the inner wall, it is not easy to seal, and it is prone to air leakage, so the vacuuming effect is not good or fails; when the second structure vacuumizes When the sealing machine vacuumizes the smooth bag, because the inner wall of the smooth bag is smooth and there is no support of the suction pipe, the bag opening is easy to be glued and closed, so that the air inside the smooth bag is not easy to be drawn out, resulting in poor vacuuming effect

[0005] After the vacuum sealing machine with the second structure is vacuumed, since the vacuum chamber is under negative pressure, the upper cover cannot be opened after the automatic cover locking mechanism is opened, and the vacuum chamber needs to be depressurized in order to Open the upper cover, generally set up an exhaust pipe in the vacuum chamber, and add a solenoid valve on the exhaust pipe, open or close the solenoid valve through the control circuit, so that the vacuum chamber is connected to or isolated from the atmosphere, so as to realize pressure relief and Vacuuming, this kind of pressure relief structure is complicated, the cost is high, and the opening and closing force of the solenoid valve is limited. When the negative pressure of the vacuum chamber is too large, the general small solenoid valve cannot be opened, and a larger solenoid valve needs to be replaced. More space, resulting in bulky vacuum sealer, so improvement is necessary

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