Heat sealing mechanism of vacuum packaging machine

Abstract

The utility model discloses a heat sealing mechanism of a vacuum packaging machine, which comprises a mounting seat and a heating strip, the heating strip is arranged at the upper end of the mounting seat, two joints are symmetrically arranged at the lower end of the mounting seat, and the two joints are respectively and electrically connected with two ends of the heating strip through leads. The mounting seat is also provided with an insulating tape for covering the surface of the heating strip; the heating device further comprises a heating wire, the heating wire is arranged at the position, corresponding to the side portion of the heating strip, of the installation base, and the two ends of the heating wire are electrically connected with the corresponding connectors through wires respectively. According to the utility model, a user can conveniently remove the redundant unsealed part of the bag opening of the heat-sealed packaging bag, so that the packaging bag is more sanitary.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum packaging equipment, in particular to a heat sealing mechanism of a vacuum packaging machine. Background Art

[0002] Vacuum packaging machine is a machine that has the functions of vacuuming, heat sealing and cooling in one go. It is suitable for vacuum sealing packaging of food, aquatic products, chemical raw materials, electronic components, precision parts and other products. It can prevent products from oxidation, mildew, corrosion and moisture, and can maintain quality and freshness and extend the storage period of products.

[0003] The core structure of the vacuum packaging machine includes a heat-sealing mechanism and a vacuum mechanism. When performing the vacuum packaging operation, it is usually necessary to open the outer cover of the vacuum packaging machine, and then place the bag opening on the vacuum assembly to complete the vacuuming and heat-sealing work. However, after the existing vacuum packaging machine heat-seals the bag, an excess unsealed portion will still be left at the bag opening, which is directly exposed to the air. When food is put into the bag, this portion is easily contaminated with food residues or soup, causing a large number of bacteria to grow at the bag opening, which is not hygienic. Utility Model Content

[0004] The utility model aims to provide a heat sealing mechanism of a vacuum packaging machine. The utility model is convenient for users to remove the redundant unsealed part of the bag opening of the heat-sealed packaging bag, so as to make the packaging bag more hygienic.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat sealing mechanism of a vacuum packaging machine, comprising a mounting seat and a heating strip, wherein the heating strip is arranged at the upper end of the mounting seat, and two joints are symmetrically arranged at the lower end of the mounting seat, and the two joints are electrically connected to the two ends of the heating strip through wires, and the mounting seat is also provided with an insulating tape for covering the surface of the heating strip; and also comprising a heating wire, wherein the heating wire is arranged at a position on the mounting seat corresponding to the side of the heating strip, and the two ends of the heating wire are electrically connected to the corresponding joints through wires.

[0006] By adopting the above technical scheme, a heating wire is additionally provided on the basis of the existing heat sealing mechanism that heats the opening of the packaging bag by heating with a heating strip. During heat sealing, the heating wire and the heating strip are energized to generate heat, and together heat the bag opening of the packaging bag, so that the portion is softened and hot-melt connected. After heat sealing, it has a sealing area formed by heating with the heating strip and a linear tearing area formed by heating with the heating wire on the side of the sealing area. The redundant portion at the bag opening of the packaging bag can be removed by tearing the linear tearing area, thereby preventing the bag opening of the packaging bag from breeding a large number of bacteria due to food residues or soup attached to it, and making the packaging bag more hygienic after heat sealing.

[0007] The utility model is further configured such that the heating wire is arranged in parallel with the heating strip.

[0008] By adopting the above technical solution, after the heat sealing process is completed, the user can accurately tear the packaging bag along the sealed edge, making the tearing position more flat and beautiful.

[0009] The utility model is further configured to include a crimping structure arranged on both sides of the mounting seat, the crimping structure includes a conductive base plate and a pressing block, the conductive base plate and the pressing block are stacked from the inside to the outside, and the conductive base plate and the pressing block are connected to the side of the mounting seat by screws, the heating strip and the heating wire end are clamped between the conductive base plate and the pressing block, and the conductive base plate is electrically connected to the corresponding wire.

[0010] By adopting the above technical solution, the ends of the heating strip and the heating wire are connected together and electrically connected to the corresponding connectors through the same wire, so that the structure is simpler and the disassembly and assembly is more convenient.

[0011] The utility model is further configured that a first positioning recess for positioning the heating strip and a second positioning recess for positioning the heating wire are provided on one side of the pressing block close to the conductive bottom plate.

[0012] By adopting the above technical solution, the ends of the heating strip and the heating wire can be effectively positioned, thereby improving the stability of the connection between the two and preventing them from shifting during use.

[0013] The utility model is further configured such that a connecting protrusion is provided on the conductive bottom plate, and the connecting protrusion is electrically connected to the corresponding wire through a conductive wire clamp, and the conductive wire clamp includes a connecting substrate, and a wire sleeve is provided at one end of the connecting substrate, and the wire is inserted into the wire sleeve, and inwardly bent compression bends are symmetrically provided on both sides of the other end of the connecting substrate, and the two compression bends press the connecting protrusion onto the connecting substrate.

[0014] By adopting the above technical solution, the conductive base plate and the wire can be quickly connected through the conductive wire clamp, and its connection structure is simple and reliable, which is conducive to early assembly and later maintenance operations.

[0015] The utility model is further configured that the outer peripheral sleeve of the conductive wire clamp is provided with an insulating sleeve.

[0016] By adopting the above technical solution, the insulating sleeve is arranged on the outer periphery of the wire clamp to play an insulating role, thereby improving the safety of the structure.

[0017] The utility model is further configured that the insulating sleeve is made of a transparent material.

[0018] By adopting the above technical solution, it is convenient for the user to visually observe whether the conductive wire clamp connects the connecting protrusion of the conductive bottom plate to the wire, which is not only beneficial for early assembly, but also convenient for later troubleshooting.

[0019] The utility model is further configured that an arc-shaped bending portion is provided at the upper end of the conductive bottom plate, and a terminal end of the arc-shaped bending portion is tangent to the upper end of the mounting seat.

[0020] By adopting the above technical solution, an arc-shaped bending portion is provided to form an arc-shaped support for the turning parts of the heating strip and the heating wire, which can avoid stress concentration from damaging the heating strip and the heating wire, thereby protecting the heating strip and the heating wire, thereby effectively improving the service life of the heat sealing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a partial cross-sectional view of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the utility model in the first viewing direction after the insulating tape is removed as a whole;

[0023] Figure 3 It is a second structural schematic diagram of the utility model after the insulating tape is removed as a whole;

[0024] Figure 4 It is a schematic diagram of the connection structure between the connecting protrusion and the wire of the utility model.

[0025] In the figure: 1. mounting base; 2. heating strip; 3. connector; 4. conducting wire; 5. insulating tape; 6. heating wire; 7. conductive base plate; 8. pressing block; 9. first positioning recess; 10. second positioning recess; 11. connecting protrusion; 12. conductive wire clamp; 13. connecting substrate; 14. wire sleeve; 15. pressing bend; 16. insulating sleeve; 17. arc-shaped bend. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example: As shown in the attached Figures 1 to 4The heat sealing mechanism of the vacuum packaging machine shown includes a mounting base 1 and a heating strip 2, wherein the heating strip 2 is arranged at the upper end of the mounting base 1, and two joints 3 are symmetrically arranged at the lower end of the mounting base 1, and the two joints 3 are electrically connected to the two ends of the heating strip 2 through wires 4 respectively, and the mounting base 1 is also provided with an insulating tape 5 for covering the surface of the heating strip 2; the heat sealing mechanism also includes a heating wire 6, which is arranged at a position on the mounting base 1 corresponding to the side of the heating strip 2, and the two ends of the heating wire 6 are electrically connected to the corresponding joints 3 through wires 4 respectively, and the insulating tape 5 also covers the heating wire 6. On the basis of the existing heat sealing mechanism that heats the opening of the packaging bag by heating the heating strip 2, a heating wire 6 is additionally provided. During heat sealing, the heating wire 6 and the heating strip 2 are energized to generate heat, and together heat the bag opening of the packaging bag, so that the portion is softened and hot-melt connected. After heat sealing, it has a sealing area formed by heating the heating strip 2 and a linear tearing area formed by heating the heating wire 6 on the side of the sealing area. The redundant portion at the bag opening of the packaging bag can be removed by tearing the linear tearing area, thereby preventing the bag opening of the packaging bag from breeding a large number of bacteria due to food residues or soup attached to it, and making the packaging bag more hygienic after heat sealing.

[0028] Preferably, the heating wire 6 is arranged in parallel with the heating strip 2. After the heat sealing process is completed, the user can tear the packaging bag precisely along the sealed edge position, making the tearing position more flat and beautiful.

[0029] As attached Figure 2 and attached Figure 3 As shown, the heat sealing mechanism also includes a crimping structure arranged on both sides of the mounting seat 1, and the crimping structure includes a conductive bottom plate 7 and a pressing block 8. The conductive bottom plate 7 and the pressing block 8 are stacked from the inside to the outside, and the conductive bottom plate 7 and the pressing block 8 are connected to the side of the mounting seat 1 by screws. The ends of the heating strip 2 and the heating wire 6 are sandwiched between the conductive bottom plate 7 and the pressing block 8. The conductive bottom plate 7 is electrically connected to the corresponding wire 4, and the conductive bottom plate 7 can be made of copper. The ends of the heating strip 2 and the heating wire 6 are connected together and electrically connected to the corresponding joint 3 through the same wire 4, which makes the structure simpler and more convenient to disassemble and assemble.

[0030] As attached Figure 2 As shown, the pressing block 8 is provided with a first positioning recess 9 for positioning the heating strip 2 and a second positioning recess 10 for positioning the heating wire 6 on one side close to the conductive bottom plate 7. The first positioning recess 9 and the second positioning recess 10 may be in the shape of an inverted cone with a large outside and a small inside. This design can effectively position the ends of the heating strip 2 and the heating wire 6, improve the stability of the connection between the two, and prevent them from shifting during use.

[0031] As attached Figure 3 and attached Figure 4As shown, the conductive bottom plate 7 is provided with a connecting protrusion 11, and the connecting protrusion 11 and the conductive bottom plate 7 are an integrated structure. The connecting protrusion 11 is electrically connected to the corresponding wire 4 through a conductive wire clamp 12, and the conductive wire clamp 12 includes a connecting substrate 13, and one end of the connecting substrate 13 is provided with a wire sleeve 14, and the wire 4 is inserted into the wire sleeve 14. The two sides of the other end of the connecting substrate 13 are symmetrically provided with inwardly bent pressing bends 15, and the two pressing bends 15 press the connecting protrusion 11 on the connecting substrate 13. The conductive bottom plate 7 and the wire 4 can be quickly connected by the conductive wire clamp 12, and its connection structure is simple and reliable, which is conducive to early assembly and later maintenance operations.

[0032] As attached Figure 3 As shown, the outer periphery of the conductive wire clamp 12 is provided with an insulating sleeve 16, and the insulating sleeve 16 can be made of silicone material. The insulating sleeve 16 is provided on the outer periphery of the wire clamp of the conductor 4 to play an insulating role and improve the safety of the structure.

[0033] Preferably, the insulating sleeve 16 is made of a transparent material, so that the user can visually observe whether the conductive wire clamp 12 connects the connecting protrusion 11 of the conductive bottom plate 7 and the wire 4 together, which is not only beneficial for early assembly, but also convenient for later troubleshooting.

[0034] As attached Figure 2 As shown, an arc-shaped bending portion 17 is provided at the upper end of the conductive bottom plate 7, and the arc-shaped bending portion 17 and the conductive bottom plate 7 are an integrated structure, and the end of the arc-shaped bending portion 17 is tangent to the upper end of the mounting seat 1. The arc-shaped bending portion 17 is provided to form an arc-shaped support for the turning part of the heating strip 2 and the heating wire 6, which can avoid stress concentration from damaging the heating strip 2 and the heating wire 6, and play the effect of protecting the heating strip 2 and the heating wire 6, thereby effectively improving the service life of the heat sealing mechanism.

Claims

1. A heat sealing mechanism of a vacuum packaging machine, comprising a mounting seat (1) and a heating strip (2), wherein the heating strip (2) is arranged at the upper end of the mounting seat (1), and two joints (3) are symmetrically arranged at the lower end of the mounting seat (1), and the two joints (3) are respectively electrically connected to the two ends of the heating strip (2) through wires (4), and the mounting seat (1) is also provided with an insulating tape (5) for covering the surface of the heating strip (2); characterized in that: It also includes a heating wire (6), which is arranged on the mounting seat (1) at a position corresponding to the side of the heating strip (2), and the two ends of the heating wire (6) are electrically connected to the corresponding connector (3) via wires (4).

2. The heat sealing mechanism of the vacuum packaging machine according to claim 1, characterized in that: The heating wire (6) is arranged in parallel with the heating strip (2).

3. The heat sealing mechanism of the vacuum packaging machine according to claim 1, characterized in that: It also includes a crimping structure arranged on both sides of the mounting seat (1), the crimping structure includes a conductive base plate (7) and a pressing block (8), the conductive base plate (7) and the pressing block (8) are stacked from the inside to the outside, and the conductive base plate (7) and the pressing block (8) are connected to the side of the mounting seat (1) by screws, the ends of the heating strip (2) and the heating wire (6) are clamped between the conductive base plate (7) and the pressing block (8), and the conductive base plate (7) is electrically connected to the corresponding wire (4).

4. The heat sealing mechanism of the vacuum packaging machine according to claim 3, characterized in that: A first positioning recess (9) for positioning the heating strip (2) and a second positioning recess (10) for positioning the heating wire (6) are provided on one side of the pressing block (8) close to the conductive bottom plate (7).

5. The heat sealing mechanism of the vacuum packaging machine according to claim 3, characterized in that: The conductive bottom plate (7) is provided with a connecting protrusion (11), the connecting protrusion (11) is electrically connected to a corresponding wire (4) through a conductive wire clamp (12), the conductive wire clamp (12) comprises a connecting substrate (13), one end of the connecting substrate (13) is provided with a wire sleeve (14), the wire (4) is plugged into the wire sleeve (14), and both sides of the other end of the connecting substrate (13) are symmetrically provided with inwardly bent pressing bends (15), and the two pressing bends (15) press the connecting protrusion (11) onto the connecting substrate (13).

6. The heat sealing mechanism of the vacuum packaging machine according to claim 5, characterized in that: The outer periphery of the conductive wire clamp (12) is provided with an insulating sleeve (16).

7. The heat sealing mechanism of the vacuum packaging machine according to claim 6, characterized in that: The insulating sleeve (16) is made of a transparent material.

8. The heat sealing mechanism of the vacuum packaging machine according to claim 3, characterized in that: An arc-shaped bending portion (17) is provided at the upper end of the conductive bottom plate (7), and the end of the arc-shaped bending portion (17) is tangent to the upper end of the mounting seat (1).

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