A meat product vacuum packaging bag edge sealing device

Abstract

This utility model discloses a sealing device for vacuum packaging bags of meat products, relating to the field of packaging bag sealing technology. It includes a limiting part, a transmission part, and a sealing part. The limiting part is symmetrically arranged at both ends of the transmission part, including a rotatable limiting support plate and a slidably arranged limiting sliding plate. The sliding plate is connected to the support plate via a return spring. The transmission linkage of the transmission part drives the limiting support plate to rotate, thus fixing the packaging bag. The sealing shell of the sealing part is pushed and pressed together by a cylinder to form a vacuum chamber. A sealing vacuum pump draws a vacuum, and the sealing knife is mounted on a bracket via adjusting bolts, cooperating with the hot-pressing limiting plate for sealing. The device uses a silicone sliding plate for flexible clamping, and the symmetrical linkage mechanism ensures uniform force distribution. The sliding plate is equipped with an exhaust groove to assist in exhaust. This improves the sealing performance and stability, reduces air residue, delays meat product spoilage, and enhances the versatility of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag sealing technology, specifically a sealing device for vacuum packaging bags of meat products. Background Technology

[0002] In the meat processing industry, vacuum packaging technology has become the primary packaging method due to its significant advantages in effectively extending the shelf life of meat products and preventing oxidative spoilage and microbial contamination. The sealing quality of vacuum packaging bags directly determines their airtightness and reliability. If the sealing is not tight, air and microorganisms can enter the packaging bag, significantly reducing the freshness of the meat products and potentially causing food safety issues, resulting in economic losses and reputational risks for businesses.

[0003] Traditional sealing devices use simple, rigid clamping structures to limit and fix packaging bags. During the fixing process, uneven clamping force or positional deviations can easily cause bag displacement and wrinkling, affecting the accuracy and sealing of subsequent sealing. This is especially problematic for bags of different sizes and thicknesses, making it difficult to achieve stable, adaptive fixing and reducing the equipment's versatility. In the vacuum treatment stage before sealing, some devices cannot efficiently remove all air from the packaging bag. Residual air affects the vacuum level, accelerates the oxidation of meat products, and can cause bubbles and cracks at the sealing edge due to thermal expansion during sealing, severely impacting sealing quality. Furthermore, the sealing blade's position adjustment is not flexible or precise enough to adapt to different bag materials and thicknesses, leading to uneven sealing pressure and temperature distribution, resulting in sealing that is either too loose or too tight. Too loose a seal results in a weak seal, while too tight a seal can easily damage the bag, affecting the product's appearance and performance. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides the following technical solution: a sealing device for vacuum packaging bags of meat products, comprising:

[0005] The limiting part is symmetrically arranged at both ends of the transmission part. The limiting part includes a rotatable limiting support plate one and a limiting support plate two. A limiting sliding plate one and a limiting sliding plate two are slidably arranged on the limiting support plate one and the limiting support plate two. The other end of the limiting sliding plate one and the limiting sliding plate two are arranged on the limiting support plate one and the limiting support plate two through a limiting return spring one and a limiting return spring two.

[0006] The transmission part includes a rotatably configured transmission link three. The transmission link three drives the limiting support plate one and the limiting support plate two symmetrically arranged at both ends of the transmission part to rotate through the driving link mechanism, so that the limiting sliding plate one and the limiting sliding plate two move closer to each other to fix the packaging bag.

[0007] The sealing section includes a sealing bracket, on which a sealing shell 2 and a sealing shell 1 are slidably mounted. The sealing shell 2 and the sealing shell 1 are mutually fitted together by the pushing of the sealing cylinder 1 and the sealing cylinder 2 to form a sealed vacuum chamber. The sealing shell 2 is equipped with a sealing bracket that can be adjusted by a sealing knife adjusting bolt. The sealing bracket is equipped with a sealing knife for sealing the edge. The sealing knife cooperates with the sealing heat-pressing limiting plate to seal the edge of the packaging bag.

[0008] Furthermore, the linkage mechanism includes a fourth transmission link and a second transmission link, which are rotatably disposed at both ends of the third transmission link;

[0009] The other end of the second transmission link is rotatably mounted on the first transmission plate, the first transmission plate is rotatably mounted on the first edge sealing bracket, the first transmission link is rotatably mounted on the first transmission plate, and the other end of the first transmission link is rotatably mounted on the first limiting support plate.

[0010] The other end of the transmission link four is rotatably mounted on the transmission plate two, the transmission plate two is rotatably mounted on the edge sealing bracket one, the transmission link five is rotatably mounted on the transmission plate two, and the other end of the transmission link five is rotatably mounted on the limiting support plate one.

[0011] Furthermore, both the first limiting sliding plate and the second limiting sliding plate are made of silicone material, and both the first limiting sliding plate and the second limiting sliding plate are provided with an exhaust groove for venting the packaging bag.

[0012] Furthermore, a transmission gear is fixedly mounted on the transmission linkage three, and the transmission gear meshes with a drive gear mounted on the output shaft of the drive motor.

[0013] Furthermore, a guide rail is provided on the edge sealing bracket, and both the edge sealing shell one and the edge sealing shell two are set on the guide rail. The edge sealing shell two is set on the edge sealing vacuum pump through the edge sealing vacuum tube.

[0014] Furthermore, the bottom of the edge sealing bracket is detachably equipped with an edge sealing loading box via a sliding groove, and the edge sealing loading box is equipped with a handle for easy disassembly.

[0015] Furthermore, the edge sealing knife is equipped with a resistance heating wire, and the edge sealing knife is made of copper.

[0016] The advantages of this utility model compared with the prior art are:

[0017] 1. Flexible clamping to avoid displacement and wrinkles: The limiting part of this device uses two silicone limiting sliding plates, one and two, which, together with the elastic buffering effect of the limiting return springs one and two, can automatically adjust the clamping force according to the thickness and specifications of the packaging bag during the clamping process. This avoids the problem of packaging bag displacement and wrinkles caused by uneven force in traditional rigid clamping structures, and ensures accurate sealing of the subsequent edge.

[0018] 2. Symmetrical linkage and strong positioning consistency: The transmission part of this device drives the symmetrically arranged limit support plates to rotate synchronously through the linkage mechanism (transmission link, transmission plate, etc.), so that the limit sliding plates one and two are evenly stressed when they approach each other, and symmetrically clamp the area of ​​the packaging bag to be sealed, ensuring the stable positioning of packaging bags of different specifications and improving the adaptability of the equipment to diversified packaging.

[0019] 3. Exhaust Channel Design for Vacuum Processing: The rectangular exhaust channel in the middle of the limiting sliding plate of this device provides a channel for air to escape from the packaging bag, reducing residual air during the vacuum processing stage and avoiding exhaust obstruction caused by clamping and sealing, thus indirectly improving the vacuum level. The sealing section is driven by the sealing cylinder to seal the sealing shells one and two together, forming a sealed vacuum chamber with the rubber sealing gasket, reducing external air interference; the sealing vacuum pump quickly extracts air from the chamber through the vacuum tube, which can fully squeeze out the residual air in the packaging bag, improve the vacuum level, and delay the oxidation and spoilage of meat products.

[0020] 4. This device allows for precise adjustment of the sealing blade position using the sealing blade adjustment bolt, based on the material and thickness of the packaging bag, ensuring uniform sealing pressure. The copper sealing blade incorporates a built-in resistance heating wire, enabling rapid heating to the film melting temperature, ensuring stable hot pressing temperature and preventing issues such as excessively loose sealing (inadequate seal) or excessively tight sealing (bag breakage). The sealing hot pressing limiting plate provides support and positioning for the packaging bag, ensuring a tight and accurate fit between the sealing blade and the bag, guaranteeing a continuous and uniform fusion zone, and improving sealing performance and aesthetic integrity. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 3 This is a partial structural diagram of the limiting part of this utility model.

[0024] Figure 4 This is a partial structural cross-sectional view of the limiting part of this utility model.

[0025] Figure 5 This is a partial structural diagram of the transmission part of this utility model.

[0026] Figure 6 This is a schematic diagram of a partial structure of the edge sealing part of this utility model. Figure 1 .

[0027] Figure 7 This is a schematic diagram of a partial structure of the edge sealing part of this utility model. Figure 2 .

[0028] Reference numerals: 1-Limiting part; 2-Transmission part; 3-Sealing part; 101-Limiting sliding plate one; 102-Limiting return spring one; 103-Limiting support plate one; 1011-Limiting sliding plate two; 1021-Limiting return spring two; 1031-Limiting support plate two; 201-Transmission link one; 202-Transmission plate one; 203-Transmission link two; 204-Transmission link three; 205-Transmission gear; 206-Transmission... 4-Moving connecting rod; 207-Transmission plate 2; 208-Transmission connecting rod 5; 301-Edge sealing bracket 1; 302-Edge sealing shell 1; 303-Edge sealing shell 2; 304-Edge sealing cylinder 1; 305-Edge sealing cylinder 2; 306-Edge sealing vacuum pump; 307-Edge sealing vacuum tube; 308-Edge sealing loading box; 309-Edge sealing hot pressing limit plate; 310-Edge sealing bracket; 311-Edge sealing knife; 312-Edge sealing knife adjusting bolt. Detailed Implementation

[0029] 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.

[0030] like Figures 1 to 7 As shown, a sealing device for a vacuum packaging bag of meat products includes a limiting part 1, a transmission part 2, and a sealing part 3.

[0031] like Figures 1 to 7 As shown, the limiting part 1 is symmetrically arranged at both ends of the transmission part 2. The limiting part 1 includes a limiting sliding plate 101, a limiting return spring 102, a limiting support plate 103, a limiting sliding plate 1011, a limiting return spring 1021, and a limiting support plate 1031. The limiting support plate 103 is rotatably mounted on the edge sealing bracket 301. The limiting sliding plate 101 is slidably mounted on the limiting support plate 103. The other end of the limiting sliding plate 101 is mounted on the limiting support plate 103 via the limiting return spring 102. On plate 103; limit support plate 2 1031 is rotatably mounted on edge sealing bracket 1 301, limit sliding plate 2 1011 is slidably mounted on limit support plate 2 1031, and the other end of limit sliding plate 2 1011 is mounted on limit support plate 2 1031 through limit reset spring 2 1021; limit sliding plate 1 101 and limit sliding plate 2 1011 are made of silicone material, and the middle of limit sliding plate 1 101 and limit sliding plate 2 1011 is provided with an exhaust groove for the packaging bag to exhaust, and the exhaust groove is rectangular.

[0032] like Figures 1 to 7As shown, the transmission part 2 includes a transmission link 204, a transmission gear 205, and a linkage mechanism. The transmission link 204 is rotatably mounted on the sealing bracket 301. The transmission link 204 drives the limiting support plates 103 symmetrically arranged at both ends of the transmission part 2 to rotate through the driving linkage mechanism, so that the symmetrically arranged limiting sliding plates 101 move closer to each other to fix the packaging bag.

[0033] like Figures 1 to 7 As shown, the linkage mechanism includes a second transmission link 203, a first transmission plate 202, a first transmission link 201, a fourth transmission link 206, a second transmission plate 207, and a fifth transmission link 208. The fourth transmission link 206 and the second transmission link 203 are rotatably mounted at both ends of the third transmission link 204. The other end of the second transmission link 203 is rotatably mounted on the first transmission plate 202, which is rotatably mounted on the edge sealing bracket 301. The first transmission link 201 is rotatably mounted on the first transmission plate 202, and the other end of the first transmission link 201 is rotatably mounted on the limiting support plate 103. The other end of the fourth transmission link 206 is rotatably mounted on the second transmission plate 207, which is rotatably mounted on the edge sealing bracket 301. The fifth transmission link 208 is rotatably mounted on the second transmission plate 207, and the other end of the fifth transmission link 208 is rotatably mounted on the limiting support plate 103. A transmission gear 205 is fixedly installed on the transmission connecting rod 3 204, and the transmission gear 205 meshes with the drive gear installed on the output shaft of the drive motor.

[0034] like Figures 1 to 7As shown, the edge sealing part 3 includes an edge sealing bracket 301, an edge sealing shell 302, an edge sealing shell 303, an edge sealing cylinder 304, an edge sealing cylinder 305, an edge sealing vacuum pump 306, an edge sealing vacuum tube 307, an edge sealing loading box 308, an edge sealing hot pressing limit plate 309, an edge sealing bracket 310, an edge sealing knife 311, and an edge sealing knife adjusting bolt 312. The edge sealing shell 303 and the edge sealing shell 302 are slidably mounted on the edge sealing bracket 301. The edge sealing shell 303 and the edge sealing shell 302 are mutually adhered to each other by the pushing action of the edge sealing cylinder 304 and the edge sealing cylinder 305 to form a seal. A closed vacuum chamber is formed. One end of sealing cylinder 2 305 is fixedly mounted on sealing bracket 1 301, and the output end of sealing cylinder 2 305 is fixedly mounted on sealing shell 1 302. One end of sealing cylinder 1 304 is fixedly mounted on sealing bracket 1 301, and the output end of sealing cylinder 1 304 is fixedly mounted on sealing shell 2 303. Sealing bracket 310 is adjustable on sealing shell 2 303 via sealing knife adjusting bolt 312. Sealing knife 311 for sealing is mounted on sealing bracket 310. Sealing knife 311 cooperates with sealing heat pressing limiting plate 309 to seal the packaging bag. Guide rail is provided on sealing bracket 1 301, and sealing shell 1 302 and sealing shell 2 303 are both mounted on the guide rail. Sealing shell 2 303 is mounted on sealing vacuum pump 306 via sealing vacuum tube 307. The edge sealing bracket 301 has a detachable edge sealing loading box 308 at its bottom via a sliding groove, and the edge sealing loading box 308 is equipped with a handle for easy disassembly. The edge sealing knife 311 contains a resistance heating wire and is made of copper. Both the edge sealing housing 303 and the edge sealing housing 302 have rubber sealing gaskets for sealing on their mating surfaces.

[0035] like Figures 1 to 7 As shown, the working principle of the sealing device for vacuum packaging bags of meat products disclosed in this utility model is as follows:

[0036] Place the packaging bag to be sealed on top of the sealing bracket 301, so that one side of the packaging bag to be sealed is between the limiting sliding plate 101 and the limiting sliding plate 2011, and the end containing the meat product is inside the sealing shell 302 and the sealing shell 203. Then turn on the drive motor. The drive motor rotates and drives the drive gear, which in turn drives the transmission gear 205 to rotate. The rotation of the transmission gear 205 drives the transmission link 3 204, which in turn drives the transmission link 203 and the transmission link 4 206 to move. When the second transmission link 203 moves, it pulls the first transmission plate 202, causing the first transmission plate 202 to rotate. The rotation of the first transmission plate 202 pushes the first limiting support plate 103 and the first limiting sliding plate 101 to rotate clockwise through the first transmission link 201. When the fourth transmission link 206 moves, it pushes the second transmission plate 207 to rotate, and pulls the second limiting support plate 1031 to rotate counterclockwise through the fifth transmission link 208, causing the first limiting sliding plate 101 and the second limiting sliding plate 1011 to move closer to each other, clamping and positioning the packaging bag between the first limiting sliding plate 101 and the second limiting sliding plate 1011.

[0037] Then, the sealing cylinders 305 and 304 are activated. The sealing cylinder 305 pushes the sealing shell 302 and the hot-pressing limit plate 309 towards the sealing shell 303. The sealing cylinder 304 pushes the sealing shell 303, the support 310, the knife 311, and the knife adjusting bolt 312 towards the sealing shell 302, causing them to approach and fit together. Under the action of the sealing pad, the sealing shells 302 and 303 form a sealed vacuum chamber. The sealing vacuum pump 306 is then activated, drawing air from the vacuum tube 307 into the vacuum chamber, creating a vacuum. The air inside the packaging bag in the vacuum chamber is squeezed out. With the continuous operation of sealing cylinder 304 and sealing cylinder 305, the sealing gasket is continuously compressed, causing the sealing knife 311 to adhere to the packaging bag. Under the limiting action of the sealing hot pressing limiting plate 309, the sealing knife 311 is tightly attached to the packaging bag. The power supply of the resistance heating wire inside the sealing knife 311 is turned on, heating the sealing knife 311 to the melting temperature of the packaging bag film, causing the plastic molecules in the contact area to melt and flow. With the continuous operation of sealing cylinder 304 and sealing cylinder 305, the sealing knife 311 presses the edge of the molten film together, causing the molecules of the two layers of film to penetrate, diffuse and fuse into one, forming a continuous fusion zone; thus completing the sealing operation.

[0038] After the edge sealing is completed, the edge sealing shell 2 303 and the edge sealing shell 1 302 are reset to their original positions and move away from each other. The drive motor is turned on, and the drive motor rotates, which drives the drive gear to rotate, which in turn drives the transmission gear 205 to rotate. The rotation of the transmission gear 205 drives the transmission link 3 204 to move, which in turn drives the transmission link 2 203 and the transmission link 4 206 to move. When the second transmission link 203 moves, it pushes the first transmission plate 202 to rotate. The rotation of the first transmission plate 202 pulls the first limiting support plate 103 and the first limiting sliding plate 101 to rotate counterclockwise through the first transmission link 201. When the fourth transmission link 206 moves, it pushes the second transmission plate 207 to rotate. Through the fifth transmission link 208, it pushes the second limiting support plate 1031 to rotate clockwise, causing the first limiting sliding plate 101 and the second limiting sliding plate 1011 to move away from each other. This releases the sealed packaging bag that is located between the first limiting sliding plate 101 and the second limiting sliding plate 1011. Under the action of gravity, the bag falls into the sealing loading box 308 for collection, completing the entire sealing operation.

Claims

1. A sealing device for vacuum packaging bags of meat products, characterized in that, include: The limiting part (1) is symmetrically arranged at both ends of the transmission part (2). The limiting part (1) includes a rotatable limiting support plate one (103) and a limiting support plate two (1031). A limiting sliding plate one (101) and a limiting sliding plate two (1011) are slidably arranged on the limiting support plate one (103) and the limiting support plate two (1031). The other end of the limiting sliding plate one (101) and the limiting sliding plate two (1011) is arranged on the limiting support plate one (103) and the limiting support plate two (1031) through a limiting reset spring one (102) and a limiting reset spring two (1021). The transmission part (2) includes a rotatably arranged transmission link three (204). The transmission link three (204) drives the limiting support plate one (103) and the limiting support plate two (1031) symmetrically arranged at both ends of the transmission part (2) to rotate through the driving link mechanism, so that the limiting sliding plate one (101) and the limiting sliding plate two (1011) move closer to each other to fix the packaging bag. The sealing part (3) includes a sealing bracket (301), on which a sealing shell (303) and a sealing shell (302) are slidably disposed. The sealing shell (303) and the sealing shell (302) are mutually fitted together by the pushing of the sealing cylinder (304) and the sealing cylinder (305) to form a sealed vacuum chamber. The sealing shell (303) is adjustablely provided with a sealing bracket (310) by a sealing knife adjusting bolt (312). The sealing bracket (310) is provided with a sealing knife (311) for sealing. The sealing knife (311) cooperates with the sealing hot press limiting plate (309) to seal the packaging bag.

2. The sealing device for a vacuum packaging bag of meat products according to claim 1, characterized in that: The linkage mechanism includes a fourth (206) and a second (203) of transmission linkage rotatably disposed at both ends of the third (204); The other end of the transmission link 2 (203) is rotatably mounted on the transmission plate 1 (202), the transmission plate 1 (202) is rotatably mounted on the edge sealing bracket 1 (301), the transmission link 1 (201) is rotatably mounted on the transmission plate 1 (202), and the other end of the transmission link 1 (201) is rotatably mounted on the limiting support plate 1 (103). The other end of the transmission link four (206) is rotatably mounted on the transmission plate two (207), the transmission plate two (207) is rotatably mounted on the edge sealing bracket one (301), the transmission plate two (207) is rotatably mounted on the transmission link five (208), and the other end of the transmission link five (208) is rotatably mounted on the limiting support plate one (103).

3. The sealing device for a vacuum packaging bag of meat products according to claim 2, characterized in that: Both the first limiting sliding plate (101) and the second limiting sliding plate (1011) are made of silicone material, and both the first limiting sliding plate (101) and the second limiting sliding plate (1011) are provided with an exhaust groove for the packaging bag to exhaust.

4. The sealing device for a vacuum packaging bag of meat products according to claim 3, characterized in that: A transmission gear (205) is fixedly installed on the transmission connecting rod three (204), and the transmission gear (205) meshes with the drive gear installed on the output shaft of the drive motor.

5. The sealing device for a vacuum packaging bag of meat products according to claim 4, characterized in that: The edge sealing bracket (301) is provided with a guide rail, and the edge sealing shell (302) and the edge sealing shell (303) are both provided on the guide rail. The edge sealing shell (303) is provided on the edge sealing vacuum pump (306) through the edge sealing vacuum tube (307).

6. The sealing device for a vacuum packaging bag of meat products according to claim 5, characterized in that: The bottom of the edge sealing bracket (301) is detachably equipped with an edge sealing loading box (308) via a sliding groove, and the edge sealing loading box (308) is equipped with a handle for easy disassembly.

7. The sealing device for a vacuum packaging bag of meat products according to claim 6, characterized in that: The edge sealing knife (311) is equipped with a resistance heating wire and is made of copper.

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