Nitrogen freshness locking and filling mechanism

Abstract

The utility model discloses a nitrogen freshness locking and filling mechanism, which belongs to the technical field of packaging machines and comprises a rotary bag clamping part for clamping and conveying packaging bags, and a bag opening part capable of opening bag openings of the packaging bags is mounted on one side of the rotary bag clamping part. And a nitrogen filling and bag opening part for filling the bag opening of the packaging bag with high-pressure nitrogen is arranged above the bag opening part. According to the nitrogen freshness-locking filling mechanism, the packaging bag is blown by filling the high-pressure nitrogen into the bag opening of the packaging bag, when the packaging bag is sealed in a vacuum mode subsequently, residual gas in the bag is nitrogen, and due to the fact that the nitrogen is more stable than air, the freshness of food in the bag can be effectively locked, and therefore the shelf life of the food is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, specifically to a nitrogen-based freshness-locking filling mechanism. Background Technology

[0002] Most packaging machines on the market currently use air to open the packaging bags. After opening, food is filled into the bag, and then the bag is vacuum-sealed. This method of opening packaging bags with air has certain problems: although most of the air can be removed from the bag during vacuuming, some air will still remain, resulting in a shorter shelf life for the food inside and failing to achieve the desired freshness-locking effect. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a nitrogen-filling mechanism that fills the packaging bag with nitrogen when it is opened, thereby improving the food preservation effect.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A nitrogen-filled freshness-locking mechanism includes a rotary bag clamping part that clamps and conveys a packaging bag, an opening part that opens the bag opening is installed on one side of the rotary bag clamping part, and a nitrogen-filling opening part that fills the bag opening with nitrogen is installed above the opening part.

[0006] Using the above scheme, the nitrogen-locking filling mechanism inflates the packaging bag by filling the bag opening with high-pressure nitrogen. When the packaging bag is vacuum sealed subsequently, the gas remaining inside the bag is nitrogen. Since nitrogen is more stable than air, it can effectively lock in the freshness of the food inside the bag, thereby extending the shelf life of the food.

[0007] In a preferred embodiment of a nitrogen-filled freshness-locking mechanism, the nitrogen-filling and opening section includes a nitrogen-filling pipe connected to a nitrogen tank. The nitrogen-filling pipe is controlled by a cylinder to deliver nitrogen, and the nitrogen tank is filled with high-pressure nitrogen.

[0008] Using the above scheme, in order to achieve nitrogen filling, when the opening part of the packaging bag is opened, high-pressure nitrogen is filled into the opening of the bag through the nitrogen filling tube under the control of the cylinder. The pressure of the nitrogen is used to completely inflate the packaging bag, and the gas inside the packaging bag is nitrogen.

[0009] In a preferred embodiment of a nitrogen-filled gas freshness-locking mechanism, the nitrogen filling pipe is fixed inside the clamp, and both the clamp and the cylinder are fixed on a vertically arranged column.

[0010] To improve stability during nitrogen filling, the nitrogen filling tube is fixed inside the clamp, and then the clamp is fixed to the column. At this time, the nitrogen filling tube is located above the packaging bag, and nitrogen is filled from top to bottom.

[0011] As a preferred embodiment of a nitrogen-filling mechanism for preserving freshness, a nitrogen filling head is detachably installed at the end of the nitrogen filling tube. The nitrogen filling head includes a vertically downward nitrogen filling head one and two inclined downward nitrogen filling heads two, wherein the chambers of nitrogen filling head one and nitrogen filling head two are interconnected.

[0012] Using the above method, in order to fill the bag with nitrogen from multiple directions, a nitrogen filling tube with multiple filling heads in different directions is used to fill the bag opening with nitrogen. At this time, the packaging bag will be inflated at a relatively faster speed.

[0013] As a preferred embodiment of a nitrogen-sealed freshness filling mechanism, the rotary bag clamping part includes a rotary platform, and multiple sets of clamping arm components are fixedly installed on the side of the rotary platform. Each set of clamping arm components includes two clamping arms arranged opposite each other, and a clamping block is rotatably installed at the end of each clamping arm.

[0014] Using the above scheme, in order to clamp the packaging bag, the left and right sides of the bag opening are clamped on the clamping blocks of each set of clamping arm components, and the opening and nitrogen filling of the packaging bag are completed one by one by rotating.

[0015] As a preferred embodiment of a nitrogen-filled freshness-locking mechanism, the bag opening portion includes an external opening component and an internal opening component;

[0016] The bag opening component includes two oppositely arranged bag opening arms. One end of the two bag opening arms is movably connected through a bag connecting arm. The end of each bag opening arm away from the bag connecting arm is connected to a bag suction head through a suction tube.

[0017] The bag opening component includes two opposing bag opening arms. The two bag opening arms are movably connected on one side by a bag inside pull arm. Each bag opening arm has a bag opening piece fixed at the end away from the bag inside pull arm.

[0018] Using the above scheme, in order to open the bag opening, two external suction heads respectively suck up the outside of the bag opening, and two internal opening tabs are located inside the bag opening. An internal pull arm actively drives the two internal opening arms to expand outward, while the two external opening arms passively expand outward following the internal opening arms, thereby gradually opening the bag opening.

[0019] As a preferred embodiment of the nitrogen-locking filling mechanism, the outer opening component of the bag also includes a protective shell 1 that covers the outer opening arm of the bag; the inner opening component also includes a protective shell 2 that covers both the inner opening arm and the inner side pull arm of the bag.

[0020] By adopting the above solution, in order to protect both the external and internal opening components of the bag, all movable parts are hidden inside the protective shell, thereby improving the safety of the equipment during operation.

[0021] After adopting the above technical solution, the beneficial effects of this utility model are:

[0022] 1. This nitrogen-locking filling mechanism inflates the packaging bag by filling the bag opening with high-pressure nitrogen. When the packaging bag is vacuum sealed, the gas remaining inside the bag is nitrogen. Since nitrogen is more stable than air, it can effectively lock in the freshness of the food inside the bag, thereby extending the shelf life of the food.

[0023] 2. In order to achieve nitrogen filling, when the opening part opens the bag, high-pressure nitrogen is filled into the opening of the bag under the control of the cylinder through the nitrogen filling tube. The pressure of the nitrogen is used to completely inflate the bag. At this time, the gas in the bag is nitrogen.

[0024] 3. To improve the stability during nitrogen filling, fix the nitrogen filling tube inside the clamp, and then fix the clamp to the column. At this time, the nitrogen filling tube is located above the packaging bag, and nitrogen is filled from top to bottom.

[0025] 4. In order to fill the bag with nitrogen from multiple directions, a nitrogen filling tube with multiple filling heads in different directions is used to fill the bag opening with nitrogen. At this time, the packaging bag will be inflated at a relatively faster speed.

[0026] 5. In order to clamp the packaging bag, the left and right sides of the bag opening are clamped onto the clamping blocks of each set of clamping arm components, and the opening and nitrogen filling of the packaging bag are completed one by one by rotating.

[0027] 6. In order to open the bag opening, two external suction heads hold the outside of the bag opening, and two internal opening tabs are located inside the bag opening. One internal pull arm actively drives the two internal opening arms to expand outward. At this time, the two external opening arms passively expand outward along with the internal opening arms, thereby gradually opening the bag opening.

[0028] 7. In order to protect both the external and internal opening components of the bag, all movable parts are hidden inside the protective shell, thereby improving the safety of the equipment during operation. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A three-dimensional structural diagram of a nitrogen-based freshness-locking filling mechanism;

[0031] Figure 2 A top view of the nitrogen-filled gas filling mechanism;

[0032] Figure 3 for Figure 1 3D structural diagram of the nitrogen-filled opening section;

[0033] Figure 4 for Figure 1 3D structural diagram of the rotating clamping bag section;

[0034] Figure 5 for Figure 1 3D structural diagram of the center-opening pocket section;

[0035] Figure 6 A 3D structural diagram showing the protective shell 1 and protective shell 2 hidden behind the opening of the bag;

[0036] The diagram shows the following markings: 1-Rotary bag clamping section; 101-Rotating platform; 102-Clamping arm; 103-Clamping block; 2-Bag opening section; 201-Outer bag opening arm; 202-Outer bag connecting arm; 203-Outer bag suction head; 204-Inner bag opening arm; 205-Inner bag pull arm; 206-Inner bag opening piece; 207-Protective shell one; 208-Protective shell two; 3-Nitrogen filling and opening section; 301-Nitrogen tank; 302-Nitrogen filling pipe; 303-Cylinder; 304-Clamping seat; 305-Column; 306-Nitrogen filling head. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] like Figures 1 to 2 As shown, a nitrogen-filled freshness-locking mechanism includes a rotary bag-clamping section 1 that clamps and conveys a packaging bag. An opening section 2, capable of opening the bag's opening, is installed beside the rotary bag-clamping section 1. Above the opening section 2, a nitrogen-filling opening section 3 is installed for filling the bag's opening with nitrogen gas. This nitrogen-filled freshness-locking mechanism inflates the packaging bag by filling it with high-pressure nitrogen gas. When the bag is subsequently vacuum-sealed, the remaining gas inside is nitrogen. Because nitrogen is more stable than air, it effectively locks in the freshness of the food inside, thereby extending the food's shelf life.

[0039] like Figure 3As shown, the nitrogen-filling and opening section 3 includes a nitrogen-filling pipe 302 connected to a nitrogen tank 301. The nitrogen-filling pipe 302 is controlled by a cylinder 303 to deliver nitrogen gas. The nitrogen tank 301 is filled with high-pressure nitrogen gas. To achieve nitrogen filling, when the opening section 2 opens the bag opening, high-pressure nitrogen gas is filled into the open bag opening through the nitrogen-filling pipe 302 under the control of the cylinder 303. The pressure of the nitrogen gas is used to completely inflate the bag, and the gas inside the bag is nitrogen gas.

[0040] like Figure 3 As shown, the nitrogen filling tube 302 is fixed inside the clamp 304, and both the clamp 304 and the cylinder 303 are fixed on the vertically arranged column 305. To improve the stability during nitrogen filling, the nitrogen filling tube 302 is fixed inside the clamp 304, and then the clamp 304 is fixed on the column 305. At this time, the nitrogen filling tube 302 is located above the packaging bag, and nitrogen is filled from top to bottom.

[0041] like Figure 3 As shown, a nitrogen filling head 306 is detachably installed at the end of the nitrogen filling tube 302. The nitrogen filling head 306 includes one vertically downward-facing nitrogen filling head 306-1 and two inclined downward-facing nitrogen filling heads 306-2, wherein the chambers of nitrogen filling head 306-1 and nitrogen filling head 306-2 are interconnected. To allow nitrogen to be filled into the bag from multiple directions, a nitrogen filling tube 302 with multiple filling heads in different directions is used to fill the bag opening with nitrogen, resulting in a relatively faster inflating speed of the packaging bag.

[0042] like Figure 4 As shown, the rotary bag clamping part 1 includes a rotary platform 101. Multiple sets of clamping arms 102 are fixedly mounted on the side of the rotary platform 101. Each set of clamping arms 102 includes two opposing clamping arms 102, and a clamping block 103 is rotatably mounted at the end of each clamping arm 102. To clamp the packaging bag, the left and right sides of the bag opening are clamped onto the clamping blocks 103 of each set of clamping arms 102, and the opening and nitrogen filling of the packaging bag are completed one by one by rotation.

[0043] like Figures 5 to 6As shown, the bag opening portion 2 includes an external bag opening component and an internal bag opening component. The external bag opening component includes two opposing external bag opening arms 201, one end of which is movably connected by an external bag connecting arm 202. The end of each external bag opening arm 201 away from the external bag connecting arm 202 is connected to an external bag suction head 203 via a suction tube. The internal bag opening component includes two opposing internal bag opening arms 204, one side of which is movably connected by an internal bag pull arm 205. The end of each internal bag opening arm 204 away from the internal bag pull arm 205 is fixed with an internal bag opening piece 206, the thickness of which is 0.5-0.8mm. In order to open the bag opening, two external suction heads 203 respectively suck the outside of the bag opening, and two internal opening tabs 206 are located inside the bag opening. An internal pull arm 205 actively drives the two internal opening arms 204 to expand outward. At this time, the two external opening arms 201 passively expand outward along with the internal opening arms 204, thereby gradually opening the bag opening.

[0044] like Figure 5 As shown, the outer opening component of the bag also includes a protective shell 207 that covers the outer opening arm 201; the inner opening component of the bag also includes a protective shell 208 that covers the inner opening arm 204 and the inner side pull arm 205. In order to achieve protection for both the outer and inner opening components of the bag, all movable parts are hidden inside the protective shell, thereby improving the safety of the equipment during operation.

[0045] The working principle of this utility model:

[0046] like Figure 2 As shown, in application, the left and right sides of the bag opening are clamped onto the clamping blocks 103 of each set of clamping arms 102. Under the action of the rotating platform 101, the bag is rotated to the position of the outer suction head 203 and the inner opening piece 206. Then, the two outer suction heads 203 respectively suck up the outer side of the bag opening, and the two inner opening pieces 206 are located inside the bag opening. One inner pull arm 205 actively drives the two inner opening arms 204 to expand outward, while the two outer opening arms 201... The inner arm 204 passively expands outward, gradually opening the bag opening. When the opening part 2 opens the bag opening, high-pressure nitrogen is filled into the opening through the nitrogen filling tube 302 under the control of the cylinder 303. The pressure of the nitrogen is used to completely inflate the bag. At this time, the gas inside the bag is nitrogen. When the bag is vacuum sealed later, the gas remaining inside the bag is nitrogen. Since nitrogen is more stable than air, it can effectively lock in the freshness of the food inside the bag, thereby extending the shelf life of the food.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A nitrogen lock fresh fill mechanism characterized by: The device includes a rotary bag clamping section for clamping and conveying packaging bags, an opening section for opening the bag opening is installed on one side of the rotary bag clamping section, and a nitrogen filling opening section for filling the bag opening with nitrogen gas is installed above the opening section.

2. The nitrogen lock fresh fill mechanism of claim 1, wherein: The nitrogen filling and opening section includes a nitrogen filling pipe connected to a nitrogen tank. The nitrogen filling pipe is controlled by a cylinder to deliver nitrogen gas, and the nitrogen tank is filled with high-pressure nitrogen gas.

3. The nitrogen lock fresh fill mechanism of claim 2, wherein: The nitrogen filling tube is fixed in the clamp, and the clamp and cylinder are both fixed on a vertically set column.

4. The nitrogen lock fresh fill mechanism of claim 3, wherein: The nitrogen filling tube is detachably installed with a nitrogen filling head at its end. The nitrogen filling head includes a vertically downward nitrogen filling head one and two inclined downward nitrogen filling heads two, wherein the chambers of nitrogen filling head one and nitrogen filling head two are interconnected.

5. The nitrogen-purge fill mechanism of any of claims 1-4, wherein: The rotary bag clamping part includes a rotary platform, and multiple sets of clamping arm components are fixedly installed on the side of the rotary platform. Each set of clamping arm components includes two clamping arms arranged opposite each other, and a clamping block is rotatably installed at the end of each clamping arm.

6. The nitrogen lock fresh fill mechanism of claim 5, wherein: The bag opening portion includes an external bag opening component and an internal bag opening component; The bag opening component includes two oppositely arranged bag opening arms. One end of the two bag opening arms is movably connected through a bag connecting arm. The end of each bag opening arm away from the bag connecting arm is connected to a bag suction head through a suction tube. The bag opening component includes two opposing bag opening arms. The two bag opening arms are movably connected on one side by a bag inner side pull arm. Each bag opening arm has a bag opening piece fixed at the end away from the bag inner side pull arm.

7. The nitrogen-based freshness-locking filling mechanism according to claim 6, characterized in that: The outer opening component of the bag also includes a protective shell one that covers the outer opening arm of the bag; the inner opening component of the bag also includes a protective shell two that covers the inner opening arm and the inner side pull arm of the bag.

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