Sealing mechanism for vacuum fresh-keeping package

Abstract

The utility model relates to the technical field of packaging bag sealing, in particular to a sealing mechanism for vacuum fresh-keeping packaging. The upper end of the conveying frame is provided with a vacuum pumping and sealing structure which is used for conducting vacuum pumping on the vacuum fresh-keeping packaging bags and is arranged in a sealed mode. The vacuumizing sealing structure comprises a sealing frame plate arranged above the conveying frame, a vertical frame is fixedly assembled between the sealing frame plate and the conveying frame, two sets of transmission rollers are arranged on the inner side of the vertical frame, and adjusting handles are horizontally and rotationally assembled at the top ends of the transmission rollers. According to the utility model, the vacuumizing and sealing structure is arranged on the conveying frame, so that vacuum extraction and sealing operations can be completed at the same time, two key tasks are realized in the same working process, the packaging procedures are reduced, possible pollution of products in the transfer process is avoided, the packaging efficiency and the fresh-keeping effect are improved, and the production cost is reduced. The packaging box is suitable for packaging food, medicine and other products with high sanitary requirements.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag sealing technology, specifically to a sealing mechanism for vacuum preservation packaging. Background Technology

[0002] In numerous sectors, including food, pharmaceuticals, and high-end electronic products, the requirements for product preservation and storage are becoming increasingly stringent. Traditional packaging methods are insufficient to meet the demands for long-term preservation, prevention of oxidation and spoilage, and protection against external contamination. Vacuum sealing technology has emerged and gained widespread application. However, existing vacuum sealing mechanisms present several problems in practical applications. Different sizes and materials of vacuum bags require different sealing and vacuuming parameters. Most existing sealing mechanisms lack flexibility and struggle to quickly adapt to diverse packaging needs. For example, changing packaging materials or bag sizes requires complex equipment adjustments and even component replacements, resulting in cumbersome and costly operations that limit production flexibility and product diversity for businesses.

[0003] Therefore, those skilled in the art have provided a sealing mechanism for vacuum preservation packaging to solve the problems mentioned in the background art. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides:

[0005] A sealing mechanism for vacuum preservation packaging includes: a conveyor frame;

[0006] The upper end of the conveyor frame is equipped with a vacuum sealing structure for vacuum extraction and sealing of vacuum preservation packaging bags.

[0007] The vacuum sealing structure includes a sealing frame plate set above the conveyor frame, and a vertical frame is fixedly assembled between the sealing frame plate and the conveyor frame. Two sets of transmission rollers are arranged inside the vertical frame, and the top of the transmission rollers is equipped with an adjustment handle that rotates horizontally.

[0008] Furthermore, the adjustment handle is located on the outside of the sealing frame plate, and a vertical shifting belt for limiting the position of the vacuum preservation packaging bag is wound between the two sets of transmission rollers.

[0009] Preferably, an assembly frame is fixedly mounted on the front center of the sealing frame, and adjustment slots are provided at both ends of the assembly frame, with bidirectional screw blocks movably arranged inside the adjustment slots.

[0010] Preferably, the inner side of the bidirectional screw block is provided with a bidirectional screw rod rotatably mounted inside the assembly frame, and the bottom end of the bidirectional screw rod rotatably passes through the outer side of the assembly frame, and a worm gear is fixedly mounted on the outer wall.

[0011] Preferably, the worm gear meshes with a worm, and a transmission rod is fixedly installed at the center of the worm, with one end of the transmission rod connected to a servo motor.

[0012] The servo motor is fixedly installed on the outer wall of the assembly frame, and the servo motor is used to drive the transmission rod to rotate the worm gear.

[0013] Preferably, a recessed groove is provided in the middle of both the sealing frame plate and the conveying frame, and a sealing clamp plate is fixedly installed on the outer wall of the bidirectional screw block on the inner side of the recessed groove of both the sealing frame plate and the conveying frame.

[0014] Preferably, an arc-shaped groove is provided between the two sealing clamps, and an air extraction pipe is provided inside the arc-shaped groove, which is movably inserted through the inside of the assembly frame. One end of the air extraction pipe is sealed and connected to a metal hose, and one end of the metal hose is connected to a vacuum pump fixedly installed on the outer wall of the conveyor frame.

[0015] Preferably, a shaft plate is fixed to the outer wall of the air extraction pipe, and an electric telescopic rod is installed between the shaft plate and the assembly frame.

[0016] Both sealing clamps are equipped with heat-melt sealing plates for heat-melt sealing of vacuum preservation packaging on their inner sides;

[0017] The electric telescopic rod is used in conjunction with the shaft plate to extend the vacuum tube or move it away from the inside of the vacuum preservation packaging bag to facilitate vacuuming operations.

[0018] The inner side of the conveyor frame is equipped with a conveyor belt with a drive assembly, and a load-bearing frame is fixedly installed at the bottom of both ends of the conveyor frame. A controller is installed on the outer wall of the load-bearing frame.

[0019] The technical effects and advantages of this utility model are as follows:

[0020] This utility model features a vacuum sealing structure on the conveyor frame that can simultaneously perform vacuum extraction and sealing operations, achieving two key tasks in the same workflow. This reduces packaging steps, avoids potential contamination of the product during transfer, and improves packaging efficiency and preservation. It is suitable for packaging products with high hygiene requirements, such as food and pharmaceuticals.

[0021] This utility model features an adjustment handle mounted on the top of the transmission roller. By rotating the adjustment handle, the limiting state of the vertical conveyor belt on the vacuum preservation packaging bag can be adjusted, thereby fine-tuning the position between the vacuum preservation packaging bag and the vacuum sealing structure. For packaging bags of different thicknesses and materials, the sealing position can be precisely adjusted to ensure the tightness of the seal and avoid problems such as poor sealing or damage to the packaging bag caused by improper pressure. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a sealing mechanism for a vacuum preservation packaging provided in this application;

[0023] Figure 2 This is a schematic diagram of the front structure of a sealing mechanism for a vacuum preservation packaging provided in this application;

[0024] Figure 3 This is a schematic diagram of the disassembled structure of the sealing mechanism of a vacuum preservation packaging provided in this application;

[0025] Figure 4 This is a schematic diagram of the vacuum sealing structure in a vacuum preservation packaging sealing mechanism provided in this application;

[0026] Figure 5 This is a schematic diagram of point A in the sealing mechanism of a vacuum preservation packaging provided in this application.

[0027] In the picture:

[0028] 1. Conveyor frame; 2. Conveyor belt; 3. Support frame; 4. Controller;

[0029] 5. Vacuum sealing structure; 501. Sealing frame plate; 502. Vertical frame; 503. Drive roller; 504. Adjusting handle; 505. Vertical moving belt; 506. Assembly frame; 507. Adjusting groove; 508. Bidirectional screw; 509. Bidirectional screw block; 510. Worm gear; 511. Worm; 512. Drive rod; 513. Servo motor; 514. Sealing clamp plate; 515. Hot melt sealing plate; 516. Arc-shaped groove; 517. Vacuum pipe; 518. Metal flexible hose; 519. Vacuum pump; 520. Shaft plate; 521. Electric telescopic rod;

[0030] 6. Sinking trough. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The examples of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0032] For examples, please refer to Figures 1-5This embodiment provides a sealing mechanism for vacuum preservation packaging, including: a conveyor frame 1; a vacuum sealing structure 5 for vacuum extraction and sealing of vacuum preservation packaging bags is mounted on the upper end of the conveyor frame 1; the vacuum sealing structure 5 includes a sealing frame plate 501 disposed above the conveyor frame 1, and a vertical frame 502 is fixedly mounted between the sealing frame plate 501 and the conveyor frame 1, and two sets of transmission rollers 503 are disposed on the inner side of the vertical frame 502, and an adjustment handle 504 is mounted on the top of the transmission rollers 503 in a horizontally rotatable manner;

[0033] The adjusting handle 504 is located on the outside of the sealing frame plate 501, and a vertical moving belt 505 for limiting the position of the vacuum preservation packaging bag is wound between the two sets of transmission rollers 503. An assembly frame 506 is fixedly mounted on the middle of the front side of the sealing frame plate 501, and both ends of the assembly frame 506 are provided with adjusting grooves 507. A bidirectional screw block 509 is movably arranged inside the adjusting groove 507. A bidirectional screw 508 is rotatably mounted inside the assembly frame 506 and driven by a screw on the inner side of the bidirectional screw block 509. The bottom end of the bidirectional screw 508 rotatably passes through the outside of the assembly frame 506, and a worm gear 510 is fixedly mounted on its outer wall.

[0034] The worm gear 510 meshes with a worm 511, and a transmission rod 512 is fixedly installed at the center of the worm 511. One end of the transmission rod 512 is connected to a servo motor 513. The servo motor 513 is fixedly installed on the outer wall of the assembly frame 506, and the servo motor 513 is used to drive the transmission rod 512 to rotate the worm 511. Both the sealing frame plate 501 and the conveying frame 1 have a recessed groove 6 in the middle, and a sealing clamp plate 514 fixedly installed on the outer wall of the bidirectional screw block 509 is provided on the inner side of the recessed groove 6 of both the sealing frame plate 501 and the conveying frame 1.

[0035] An arc-shaped groove 516 is provided between the two sealing clamps 514, and an exhaust pipe 517 is provided inside the arc-shaped groove 516, which is movably inserted through the inside of the assembly frame 506. One end of the exhaust pipe 517 is sealed and connected to a metal hose 518, and the other end of the metal hose 518 is connected to a vacuum pump 519 fixedly installed on the outer wall of the conveyor frame 1. A shaft plate 520 is fixed to the outer wall of the exhaust pipe 517, and an electric telescopic rod 521 is installed between the shaft plate 520 and the assembly frame 506. A heat-melt sealing plate 515 for heat-melt sealing of vacuum preservation packaging is installed inside the two sealing clamps 514.

[0036] The electric telescopic rod 521 is used to cooperate with the shaft plate 520 to extend the suction pipe 517 or move it away from the vacuum preservation packaging bag to facilitate vacuuming operation; the inner side of the conveyor frame 1 is equipped with a conveyor belt 2 with a drive component assembly, and the bottom of both ends of the conveyor frame 1 are fixedly provided with a load-bearing frame 3, and the outer wall of the load-bearing frame 3 is equipped with a controller 4.

[0037] According to the above embodiments, the working principle of this invention is as follows:

[0038] Conveying process: The inner side of the conveyor frame 1 is equipped with a conveyor belt 2 with a drive unit. When the drive unit (which is a motor) is started, the conveyor belt 2 will rotate and convey the vacuum preservation packaging bag placed on it forward, so that it enters the working area of ​​the vacuum sealing structure 5.

[0039] Vacuuming and sealing preparation stage: When the vacuum preservation packaging bag reaches the designated position, the servo motor 513 is started. The servo motor 513 drives the transmission rod 512 to rotate, which drives the worm gear 511 to rotate. Since the worm gear 511 meshes with the worm wheel 510, the worm wheel 510 rotates accordingly, which in turn drives the bidirectional screw 508 to rotate. When the bidirectional screw 508 rotates, the bidirectional screw block 509, which is in cooperation with its helical transmission, will move towards or away from each other in the adjustment groove 507. When the bidirectional screw block 509 moves, it drives the sealing clamp 514 fixed on its outer wall to move. The two sealing clamps 514 gradually approach and clamp the vacuum preservation packaging bag.

[0040] Vacuuming process: After the sealing clamp 514 clamps the vacuum preservation packaging bag, the electric telescopic rod 521 is activated. The electric telescopic rod 521 extends and pushes the air extraction tube 517 through the shaft plate 520, so that one end of it passes through the arc groove 516 and goes deep into the vacuum preservation packaging bag. Then the vacuum pump 519 is activated. The vacuum pump 519 extracts the air from the vacuum preservation packaging bag through the metal hose 518 and the air extraction tube 517 to achieve the vacuuming operation.

[0041] Sealing process: After vacuuming is completed, the electric telescopic rod 521 retracts, driving the vacuum tube 517 to be pulled out from the vacuum preservation packaging bag. At this time, the heat-melting sealing plate 515 inside the sealing clamp 514 is activated. The heat-melting sealing plate 515 heats up and heat-melts the vacuum preservation packaging bag, completing the sealing operation of the vacuum preservation packaging. Throughout the process, the operator can control and coordinate various components (such as servo motor 513, electric telescopic rod 521, vacuum pump 519, heat-melting sealing plate 515, etc.) through the controller 4 to realize automated vacuum preservation packaging sealing operation.

[0042] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A sealing mechanism for vacuum preservation packaging, characterized in that, include: Conveyor frame (1); The upper end of the conveyor frame (1) is equipped with a vacuum sealing structure (5) for vacuum extraction and sealing of vacuum preservation packaging bags; The vacuum sealing structure (5) includes a sealing frame plate (501) set above the conveyor frame (1), and a vertical frame (502) is fixedly assembled between the sealing frame plate (501) and the conveyor frame (1). Two sets of transmission rollers (503) are arranged inside the vertical frame (502), and an adjustment handle (504) is mounted on the top of the transmission rollers (503) in a horizontal rotation. The adjusting handle (504) is located on the outside of the sealing frame plate (501), and a vertical moving belt (505) for limiting the position of the vacuum preservation packaging bag is wound between the two sets of transmission rollers (503).

2. The sealing mechanism for vacuum preservation packaging according to claim 1, characterized in that, The sealing frame plate (501) is fixedly assembled with an assembly frame (506) at the middle of its front side, and both ends of the assembly frame (506) are provided with adjustment grooves (507), and a bidirectional screw block (509) is movably arranged inside the adjustment groove (507).

3. The sealing mechanism for vacuum preservation packaging according to claim 2, characterized in that, The inner side of the bidirectional screw block (509) is provided with a bidirectional screw (508) that is rotatably installed inside the assembly frame (506), and the bottom end of the bidirectional screw (508) rotatably passes through the outer side of the assembly frame (506), and a worm gear (510) is fixedly installed on the outer wall.

4. The sealing mechanism for vacuum preservation packaging according to claim 3, characterized in that, The worm gear (510) meshes with a worm (511), and a transmission rod (512) is fixedly installed at the center of the worm (511). One end of the transmission rod (512) is connected to a servo motor (513).

5. The sealing mechanism for vacuum preservation packaging according to claim 1, characterized in that, Both the sealing frame plate (501) and the conveying frame (1) have a recessed groove (6) in the middle. Both the sealing frame plate (501) and the conveying frame (1) have a sealing clamp plate (514) fixedly installed on the outer wall of the bidirectional screw block (509) on the inner side of the recessed groove (6).

6. The sealing mechanism for vacuum preservation packaging according to claim 5, characterized in that, An arc-shaped groove (516) is provided between the two sealing clamps (514), and an air extraction pipe (517) is provided inside the arc-shaped groove (516) and is movably inserted through the inside of the assembly frame (506). One end of the air extraction pipe (517) is sealed and connected to a metal hose (518), and one end of the metal hose (518) is connected to a vacuum pump (519) fixedly installed on the outer wall of the conveyor frame (1).

7. The sealing mechanism for vacuum preservation packaging according to claim 6, characterized in that, The outer wall of the air extraction pipe (517) is fixed with a shaft plate (520), and an electric telescopic rod (521) is installed between the shaft plate (520) and the assembly frame (506).

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