Vacuumizing fresh-keeping packaging equipment

Abstract

The utility model relates to the field of packaging equipment, in particular to vacuumizing fresh-keeping packaging equipment. The device comprises a base, a vacuum pump, a leveling assembly and a limiting assembly. One end of the base is rotationally connected with a box cover; a sealed chamber is formed when the box cover and the base are closed. The vacuum pump is arranged in the sealing chamber, so that a negative-pressure vacuum state is formed in the sealing chamber. The leveling assembly is arranged in the sealing chamber and used for flattening the opening of the packaging bag. The limiting assembly is arranged at the upper end of the base and used for limiting and pressing the packaging bag. The driving mechanism is started to drive the two-way lead screw to rotate, so that the two sliding blocks move reversely, a bag opening is opened through the telescopic mechanism, meanwhile, the first spring pushes the first pressing plate to be pressed on a packaging bag all the time, and the packaging bag opening is flattened and tightly pressed. The packaging bag opening is ensured to be in a flat state, and the possible subsequent air leakage risk caused by untight sealing due to wrinkles of the packaging bag opening during vacuumizing is avoided.

Description

Technical Field

[0001] The utility model relates to the field of packaging equipment, in particular to a vacuum fresh-keeping packaging equipment. Background Art

[0002] The vacuum fresh-keeping packaging equipment is a common food packaging mechanical equipment, which is widely used in many fields such as food, medicine, electronics, etc. It creates a vacuum environment by pumping out the air in the packaging bag to extend the fresh-keeping time of the product. It is widely used in the fresh-keeping packaging field of freeze-dried fruits and vegetables.

[0003] The Chinese patent document with the authorization announcement number of CN219970103U proposes a vacuum fresh-keeping packaging and sealing equipment for deep-sea cod, including: an operating table, a first bracket and a second bracket are respectively fixed on the left and middle parts of the upper side; an air extraction pump, the air inlet of which is connected with an air extraction pipe, a pressing plate is liftably arranged at the inner top of the first bracket, and an arc-shaped groove for accommodating the air extraction pipe is left under the pressing plate; an opening flattening mechanism is arranged at the inner top of the second bracket, including a pair of flattening plates, a pair of elastic structures and a moving driving mechanism, the two flattening plates are respectively connected with the moving driving mechanism through the elastic structures, and are driven to move relatively and oppositely through the moving driving mechanism.

[0004] In the above application, although the wrinkles at the sealing part of the packaging bag are flattened by moving two flattening plates from the middle to both sides of the sealing part of the packaging bag, the flattening effect is poor, and it is possible that the wrinkles at the bag mouth are squeezed and stacked together, and they still cannot be completely flattened. In addition, the existing vacuum fresh-keeping packaging equipment lacks a limiting device for the packaging bag, resulting in the possible position deviation of the packaging bag during vacuum pumping, thus affecting its sealing performance. Content of the Utility Model

[0005] Aiming at the problems in the background art, a vacuum fresh-keeping packaging equipment is proposed.

[0006] The utility model proposes a vacuum fresh-keeping packaging equipment, including a base, a vacuum pump, a flattening component and a limiting component. One end of the base is rotatably connected with a box cover; when the box cover and the base are closed, a sealed chamber is formed. The vacuum pump is arranged in the sealed chamber to make the sealed chamber in a negative pressure vacuum state. The flattening component is arranged in the sealed chamber to flatten the packaging bag mouth. The limiting component is arranged at the upper end of the base to limit and press the packaging bag.

[0007] Preferably, the flattening component includes a mouth-opening part for opening the packaging bag mouth; and a flattening part for flattening the packaging bag mouth.

[0008] Preferably, the mouth-opening part includes a bidirectional lead screw rotatably connected to the inner wall of the sealed chamber; one end of the bidirectional lead screw is connected with a driving mechanism, and sliding blocks are symmetrically threadedly connected thereto; one end of the sliding block facing the opening and closing side of the box cover is provided with a telescopic mechanism.

[0009] Preferably, the flattening member includes a connecting plate disposed at one end of the sliding block facing the opening and closing side of the box cover; a first sleeve is connected to the lower end of the connecting plate; a first sliding column is slidably connected inside the first sleeve; a first pressing plate is connected to the lower end of the first sliding column; a first spring is wound around the outer sides of the first sleeve and the first sliding column together.

[0010] Preferably, the two telescopic mechanisms are respectively located on both sides of the flattening member.

[0011] Preferably, the limiting assembly includes a first limiting member that presses the packaging bag from both sides; and a second limiting member disposed on the first limiting member to press the packaging bag on the base to further limit it.

[0012] Preferably, there are two groups of the first limiting members symmetrically arranged with respect to the base; the first limiting member includes a fixing plate disposed on the upper end of the base; a second sleeve is connected to the opposite ends of the two fixing plates on both sides; a second sliding column is slidably connected inside the second sleeve; a second pressing plate is connected to the opposite ends of the two second sliding columns on both sides; a second spring is wound around the outer sides of the second sleeve and the second sliding column together.

[0013] Preferably, the lower end of the second pressing plate is open; the second limiting member includes a sliding plate slidably connected to the opening of the second pressing plate; magnets are provided on both sides of the second pressing plate; magnetic attraction blocks are provided on both sides of the sliding plate; the magnetic attraction blocks are slidably connected to a sliding groove opened on the base; a second magnet is provided at the bottom of the sliding groove; the upper end of the magnetic attraction block is magnetically connected to the first magnet, and the lower end is magnetically connected to the second magnet.

[0014] Preferably, two heating strips are provided between the opening and closing side of the box cover and the leveling assembly; one heating strip is provided at the top of the box cover, and the other heating strip is provided at the bottom of the sealing chamber; when the box cover is in a closed state, the two heating strips are horizontally symmetric and fit together.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] (1) For this vacuum fresh-keeping packaging device, by starting the driving mechanism to drive the bidirectional lead screw to rotate, the two sliding blocks move in opposite directions, so that the telescopic mechanism expands the bag mouth. At the same time, the first spring will push the first pressing plate to always press on the packaging bag, flattening and pressing the packaging bag mouth. Ensure that the packaging bag mouth is in a flat state, avoiding wrinkles in the packaging bag mouth during vacuuming, resulting in poor sealing and potential air leakage risks in the future.

[0017] (2) For this vacuum fresh-keeping packaging device, by making the two second springs push the two second pressing plates to squeeze the packaging bag from both sides to limit the packaging bag. Then press the magnetic attraction block downward, so that the magnetic attraction block is adsorbed on the second magnet, and the sliding plate presses the packaging bag on the upper end of the base to further limit the packaging bag. It can maintain the stability of the packaging bag during vacuuming, avoiding the displacement of the packaging bag position, thereby affecting the sealing performance. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 It is a schematic diagram of the leveling assembly structure of the present utility model;

[0020] Figure 3 It is a schematic diagram of the limiting assembly structure of the present utility model.

[0021] Reference numerals: 1, base; 2, box cover; 3, sealed chamber; 4, vacuum pump; 5, heating strip; 6, leveling assembly; 61, mouth-opening member; 611, bidirectional lead screw; 612, driving mechanism; 613, sliding block; 614, telescopic mechanism; 62, flattening member; 621, connecting plate; 622, sleeve one; 623, sliding column one; 624, pressing plate one; 625, spring one; 7, limiting assembly; 71, limiting member one; 711, fixing plate; 712, sleeve two; 713, sliding column two; 714, pressing plate two; 715, spring two; 72, limiting member two; 721, sliding plate; 722, magnet one; 723, magnetic attraction block; 724, sliding groove; 725, magnet two. Detailed Description of the Invention

[0022] Embodiment 1

[0023] As Figure 1-2 shown, a vacuum fresh-keeping packaging device proposed by the present utility model includes a base 1, a vacuum pump 4, a leveling assembly 6 and a limiting assembly 7. One end of the base 1 is rotatably connected with a box cover 2; when the box cover 2 is closed with the base 1, a sealed chamber 3 is formed. The vacuum pump 4 is arranged in the sealed chamber 3 to make the sealed chamber 3 in a negative pressure vacuum state. The leveling assembly 6 is arranged in the sealed chamber 3 to flatten the bag mouth. The limiting assembly 7 is arranged at the upper end of the base 1 to limit and press the packaging bag.

[0024] Further explanation, the leveling assembly 6 includes a mouth-opening member 61 for opening the bag mouth; and a flattening member 62 for flattening the bag mouth. The mouth-opening member 61 includes a bidirectional lead screw 611 rotatably connected to the inner wall of the sealed chamber 3; one end of the bidirectional lead screw 611 is connected with a driving mechanism 612, and sliding blocks 613 are symmetrically threadedly connected thereto, and the sliding blocks 613 move linearly on the bidirectional lead screw 611; the driving mechanism 612 is a motor; one end of the sliding block 613 facing the opening and closing side of the box cover 2 is provided with a telescopic mechanism 614; the telescopic mechanism 614 is a cylinder. By extending the telescopic end of the telescopic mechanism 614 into the interior of the packaging bag and then sliding the telescopic mechanism 614 to both sides, the bag mouth can be opened, so as to ensure that the bag mouth is in a flat state, avoid wrinkles at the bag mouth during vacuum pumping, resulting in poor sealing, and there may be a risk of air leakage subsequently.

[0025] Further explanation, the flattening member 62 includes a connecting plate 621 disposed at one end of the sliding block 613 facing the opening and closing side of the box cover 2; a first sleeve 622 is connected to the lower end of the connecting plate 621; a first sliding column 623 is slidably connected within the first sleeve 622; a first pressing plate 624 is connected to the lower end of the first sliding column 623; a first spring 625 is wound around the outer sides of the first sleeve 622 and the first sliding column 623. The flattening member 62 can move to both sides following the sliding block 613 to flatten the bag opening. After flattening, the telescopic mechanism 614 retracts to prevent the telescopic mechanism 614 from affecting the sealing of the packaging bag inside the bag opening. At the same time, the flattening member 62 can press the bag opening tightly to further prevent gaps from appearing after sealing.

[0026] Further explanation, the two telescopic mechanisms 614 are respectively located on both sides of the flattening member 62. First, the telescopic mechanism 614 expands the bag opening, and then the flattening member 62 flattens the bag opening.

[0027] Embodiment 2

[0028] As Figure 3 shown, a vacuum fresh-keeping packaging device proposed by the present utility model, compared with Embodiment 1, this embodiment further includes: a limiting assembly 7 includes a first limiting member 71 that presses the packaging bag from both sides; and a second limiting member 72 disposed on the first limiting member 71 to press the packaging bag on the base 1 for further limiting. There are two groups of the first limiting members 71 symmetrically arranged with respect to the base 1; the first limiting member 71 includes a fixing plate 711 disposed at the upper end of the base 1; a second sleeve 712 is connected to one end of the two fixing plates 711 facing each other; a second sliding column 713 is slidably connected within the second sleeve 712; a second pressing plate 714 is connected to one end of the two second sliding columns 713 facing each other; a second spring 715 is wound around the outer sides of the second sleeve 712 and the second sliding column 713. It can squeeze the packaging bag from both sides to limit the packaging bag and prevent the position of the packaging bag from shifting during vacuum pumping, thereby affecting the sealing performance.

[0029] Further explanation, the lower end of the second pressing plate 714 is open; the second limiting member 72 includes a sliding plate 721 slidably connected to the opening of the second pressing plate 714; magnets 722 are provided on both sides of the second pressing plate 714; magnetic attraction blocks 723 are provided on both sides of the sliding plate 721; the magnetic attraction blocks 723 are slidably connected to a sliding groove 724 formed on the base 1; a magnet 725 is provided at the bottom of the sliding groove 724; the upper end of the magnetic attraction block 723 is magnetically connected to the magnet 722, and the lower end is magnetically connected to the magnet 725.

[0030] Further explanation: There are two heating strips 5 arranged between the opening and closing side of the box cover 2 and the leveling assembly 6; a resistance wire is provided inside the heating strip 5; one of the heating strips 5 is arranged at the top of the box cover 2, and the other heating strip 5 is arranged at the bottom of the sealing chamber 3; when the box cover 2 is in a closed state, the two heating strips 5 are horizontally symmetrical and in contact with each other. After the first limiting member 71 limits the packaging bag, the magnetic attraction block 723 can be pressed into the sliding groove 724, so that the magnetic attraction block 723 adsorbs the second magnet 725. On the one hand, the sliding plate 721 can press the packaging bag against the base 1 to further limit the packaging bag. On the other hand, the position of the second sliding column 713 can be fixed to prevent the second sliding column 713 from sliding in the second sleeve 712 again, affecting the stability of limiting the packaging bag.

[0031] The working principle of the present utility model is as follows: During operation, first place the packaging bag on the base 1, and make the telescopic mechanism 614 pass through the bag mouth so that the first pressing plate 624 presses on the bag mouth. Then start the driving mechanism 612 to drive the bidirectional lead screw 611 to rotate, so that the two sliding blocks 613 move in opposite directions, thereby making the telescopic mechanism 614 expand the bag mouth. At the same time, the first spring 625 will push the first pressing plate 624 to always press on the packaging bag, flatten and clamp the packaging bag mouth. After clamping, make the telescopic mechanism 614 retract. Then make the magnetic attraction block 723 adsorb on the first magnet 722, so that the two second springs 715 push the two second pressing plates 714 to squeeze the packaging bag from both sides to limit the packaging bag. Finally, press down the magnetic attraction block 723 so that the magnetic attraction block 723 adsorbs on the second magnet 725, and make the sliding plate 721 press the packaging bag on the upper end of the base 1 to further limit the packaging bag. Finally, cover the box cover 2, start the vacuum pump 4 to perform vacuum pumping on the packaging bag. Then start the resistance wire in the heating strip 5 to heat-seal the packaging bag mouth.

[0032] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Within the scope of knowledge possessed by those skilled in the art to which it pertains, various changes can be made without departing from the purpose of the present utility model.

Claims

1. A vacuum fresh-keeping packaging device, characterized in that: include A base (1); one end of the base (1) is rotatably connected to a box cover (2); when the box cover (2) and the base (1) are closed, a sealed chamber (3) is formed; A vacuum pump (4) is arranged in the sealed chamber (3) to form a negative pressure vacuum state in the sealed chamber (3); A flattening component (6) disposed in the sealing chamber (3) and used to flatten the mouth of the packaging bag; And a limiting component (7) is arranged on the upper end of the base (1) and performs limiting pressing on the packaging bag.

2. The vacuum fresh-keeping packaging equipment according to claim 1, characterized in that: The flattening component (6) comprises an opening-opening member (61) for opening the packaging bag opening, and a flattening member (62) for flattening the packaging bag opening.

3. The vacuum fresh-keeping packaging equipment according to claim 2, characterized in that: The opening support member (61) comprises a bidirectional screw rod (611) rotatably connected to the inner wall of the sealing chamber (3); one end of the bidirectional screw rod (611) is connected to a driving mechanism (612), on which a sliding block (613) is symmetrically threadedly connected; and one end of the sliding block (613) facing the opening and closing side of the box cover (2) is provided with a telescopic mechanism (614).

4. The vacuum fresh-keeping packaging equipment according to claim 3, characterized in that: The flattening member (62) comprises a connecting plate (621) arranged at one end of the sliding block (613) facing the opening and closing side of the box cover (2); the lower end of the connecting plate (621) is connected to a sleeve (622); a sliding column (623) is slidably connected inside the sleeve (622); the lower end of the sliding column (623) is connected to a pressing plate (624); and a spring (625) is wound around the outer sides of the sleeve (622) and the sliding column (623).

5. The vacuum fresh-keeping packaging equipment according to claim 4, characterized in that: The two telescopic mechanisms (614) are respectively located on two sides of the flattening member (62).

6. The vacuum fresh-keeping packaging equipment according to claim 1, characterized in that: The limiting assembly (7) comprises a limiting member 1 (71) for pressing the packaging bag from both sides; and a limiting member 2 (72) arranged on the limiting member 1 (71) for pressing the packaging bag onto the base (1) to further limit its position.

7. The vacuum fresh-keeping packaging equipment according to claim 6, characterized in that: The first limiting member (71) has two groups symmetrically arranged with respect to the base (1); the first limiting member (71) comprises a fixing plate (711) arranged at the upper end of the base (1); the opposite ends of the fixing plates (711) on both sides are connected to the second sleeve (712); the second sliding column (713) is slidably connected inside the second sleeve (712); the opposite ends of the second sliding column (713) on both sides are connected to the second pressing plate (714); and the outer sides of the second sleeve (712) and the second sliding column (713) are jointly wound with the second spring (715).

8. The vacuum fresh-keeping packaging equipment according to claim 7, characterized in that: The lower end of the second pressing plate (714) is open; the second limiting member (72) comprises a sliding plate (721) slidably connected to the opening of the second pressing plate (714); magnets (722) are provided on both sides of the second pressing plate (714); magnetic blocks (723) are provided on both sides of the sliding plate (721); the magnetic blocks (723) are slidably connected to a slide groove (724) provided on the base (1); a second magnet (725) is provided at the bottom of the slide groove (724); the upper end of the magnetic block (723) is magnetically connected to the first magnet (722), and the lower end is magnetically connected to the second magnet (725).

9. The vacuum fresh-keeping packaging equipment according to claim 1, characterized in that: Two heating strips (5) are arranged between the opening and closing side of the box cover (2) and the leveling assembly (6); one of the heating strips (5) is arranged at the top end of the box cover (2), and the other heating strip (5) is arranged at the bottom end of the sealing chamber (3); when the box cover (2) is in a closed state, the two heating strips (5) are horizontally symmetrical and fit each other.

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