CN2362780Y - Gas-exchanging mechanism for nitrogen-filling package machine - Google Patents

Abstract

The utility model provides a novel gas-exchanging and nitrogen-filling mechanism for a gas-exchanging and nitrogen-filling packing machine. The utility model is composed of a gas-exchanging mold composed of a gas-exchanging mold plate and an upper and a lower sealing plates which are stuck with the gas-exchanging mold plate together, and a box-shaped sealing chamber which is connected with the gas-exchanging mold together through screws. Packing containers are arranged in the gas-exchanging mold and a box-shaped sealing chamber body; a sealing plastic film which can move is arranged above the packing containers, and a hot pressing mechanism can be arranged above the film. After the gas is exchanged in a packing, the film is downwards pushed by the hot pressing mechanism to a packing box and is hot pressed and sealed.

Description

The ventilation mechanism of ventilation inflated with nitrogen wrapping machine

The utility model belongs to the package packing machine field, relates in particular to the ventilation mechanism of inflated with nitrogen wrapping machine.

In package packing machine, packaging facilities in particular for food fresh keeping, valuable fragile goods packing, should keep packed article not oxidized in a period, keep its face shaping not to be damaged again, the current packaging method is packed article to be placed be difficult for ventilative plastic tape, take out the air in the bag, and then inert gas injecting---nitrogen.Yet, adopt this method inflated with nitrogen, make during air to produce negative pressure in the bag in taking out bag, packaging bag has certain pressure to packed article, damages a bag interior rapid wear packing material easily, when especially packed article is fruit, vegetables, although filled into nitrogen subsequently, fresh fruits and vegetables is also caused to a certain degree dehydration to fruit and vegetables except appearance damage, thereby make the mouthfeel of fruit and vegetables bad, fresh keeping time shortens.

The purpose of this utility model is: a kind of ventilation mechanism that does not produce negative pressure in packaging process in the packing material is provided.

For achieving the above object, the ventilation mechanism of ventilation inflated with nitrogen wrapping machine is by the ventilation cavity, admission port, bleeding point, packing container is formed, the ventilation cavity is made up of ventilation mould and box-like seal chamber, the ventilation mould is by a template and placed on it, on the lower plane, the lower seal plate is bonding to form, the last plane of template is provided with an annular groove, template has two sides to have an admission port and a bleeding point, the lower plane of template is near admission port and the bleeding point place has the air inlet distributing groove respectively and the distributing groove of bleeding, admission port and bleeding point communicate with air inlet distributing groove and extraction gas distributing groove respectively, also respectively have one group in the air inlet distributing groove and the distributing groove of giving vent to anger and be no less than plural minute pore, these minutes, pore all communicated with the annular groove on plane on the template, template and last, the lower seal plate, the plane in the middle of have a through hole, wherein, the through hole of upper sealing panel is more than or equal to the outer edge of template annular groove, the through hole of lower seal plate equates with the central through hole size of template, the annular recess of template is opened outside central through hole and both are concentric, the lower seal plate place one have flat edge and the last flat edge box-like cavity of bottom leak free on, the cavity of box-like cavity is corresponding with the central through hole of ventilation mould, box-like cavity is fastening mutually with screw with the ventilation mould, in the through hole of template, be placed with a packing box that has flat edge suitable for reading, the flat edge upperlimit of packing box is interior along size smaller or equal to the template annular recess, the cavity that packing box places ventilation mould and box-like cavity to constitute, above upper sealing panel and packing box, be provided with can batch mobile and can with the plastic diaphragms of packing box hot sealing.

The utility model has the advantages that: in the process that vacuumizes with inflated with nitrogen, packed article is not easy to be extruded and to dewater, and the freshness date of food can prolong.

With reference to the accompanying drawings the utility model is described in further detail below:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a template lower plane scheme drawing of the present utility model;

Fig. 3 is a plan sketch on the template of the present utility model;

At Fig. 1,2, in 3, the ventilation cavity of the utility model vacuum nitrogen filling gas ventilation mechanism is made up of ventilation mould and box-like seal chamber 11, the ventilation mould is with placed on it by a template 6, on the lower plane, lower seal plate 2,13 bonding forming, the last plane of template 6 is provided with an annular groove 5, template 6 has two sides to have an admission port 15 and a bleeding point 8, the lower plane of template has the air inlet distributing groove 14 and the distributing groove 9 of bleeding respectively near admission port 15 and bleeding point 8 places, admission port 15 and bleeding point 8 communicate with the air inlet distributing groove 14 and the distributing groove 9 of bleeding respectively, also respectively have one group in the air inlet distributing groove 14 and the distributing groove 9 of bleeding and be no less than plural minute pore 16,7, these minutes pore 16,7 all communicate with the annular groove 5 on plane on the template 6, template 6 is with last, lower seal plate 2, have through hole 17 in the middle of 13 the plane, 3,12, wherein, the through hole 3 of upper sealing panel 2 is more than or equal to the outer edge of template 6 annular grooves 5, the through hole 12 of lower seal plate 13 equates with central through hole 17 sizes of template, the annular recess 5 of template 6 is opened outside central through hole 17 and both are concentric, lower seal plate 13 place one have flat edge and the last flat edge box-like cavity 11 of bottom leak free on, the cavity of box-like cavity 11 is corresponding with the central through hole of ventilation mould, box-like cavity 11 is fastening mutually with screw 10 with the ventilation mould, in the through hole 17 of template, be placed with a packing box 4 that has flat edge suitable for reading, the peripheral upperlimit of the flat edge of packing box 4 is interior along size smaller or equal to template groove 5, the cavity that packing box 4 places ventilation mould and box-like cavity to constitute, above upper sealing panel 2 and packing box 4, be provided with can batch mobile and can with the plastic diaphragms 1 of packing box 4 hot sealings.When admission port 15 and bleeding point 8 work, make the air overwhelming majority in the packing box 4 to be replaced by pure nitrogen simultaneously, the plastic sheeting 1 that is in packing box 4 tops can be depressed by the hot pressing mechanism of film 1 top, make its flat mouthful of being close to packing box 4 along last, and hot sealing.

Claims (1)

1, a kind of ventilation mechanism of the inflated with nitrogen wrapping machine of taking a breath, by the ventilation cavity, admission port, air extractor duct, packing container is formed, it is characterized in that: the ventilation cavity is made up of ventilation mould and box-like seal chamber (11), the ventilation mould is with placed on it by a template (6), on following, lower seal plate (2), (13) bonding forming, the last plane of template (6) is provided with an annular groove (5), template (6) has two sides to have an admission port (15) and a bleeding point (8), the lower plane of template locates to have respectively air inlet distributing groove (14) and the distributing groove of bleeding (9) near admission port (15) and bleeding point (8), admission port (15) and bleeding point (8) communicate with air inlet distributing groove (14) and extraction gas distributing groove (9) respectively, also respectively have one group in air inlet distributing groove (14) and the distributing groove of giving vent to anger (9) and be no less than plural minute pore (16), (7), these minutes pores (16), (7) all communicate with the annular groove (5) on the last plane of template (6), template (6) is with last, lower seal plate (2), (13) have through hole (17) in the middle of the plane, (3), (12), wherein, the through hole (3) of upper sealing panel (2) is more than or equal to the outer edge of template (6) annular groove (5), the through hole (12) of lower seal plate (13) equates with central through hole (17) size of template (6), the annular recess (5) of template (6) is opened outside central through hole (17) and both are concentric, lower seal plate (13) place one have flat edge and the last flat edge box-like cavity of bottom leak free (11) on, the cavity of box-like cavity (11) is corresponding with the central through hole of ventilation mould, box-like cavity (11) is fastening mutually with screw (10) with the ventilation mould, in the through hole (17) of template, be placed with a packing box (4) that has flat edge suitable for reading, the flat edge upperlimit of packing box (4) is interior along size smaller or equal to template groove (5), the cavity that packing box (4) places ventilation mould and box-like cavity (11) to constitute, be provided with in the top of upper sealing panel (2) and packing box (4) can batch mobile and can with the plastic diaphragms (1) of packing box (4) hot sealing.

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