Packaging bag hot melting sealing device

Abstract

The utility model relates to the technical field of packaging bag processing, in particular to a packaging bag hot melting sealing device. Comprising a first upper sealing cutter, a second upper sealing cutter, a first lower sealing cutter and a second lower sealing cutter, wherein the first upper sealing cutter and the second upper sealing cutter are arranged on a hot melting rack and located above a packaging bag to be machined; the first lower sealing cutter is arranged under the first upper sealing cutter and corresponds to a cutter edge; the second lower sealing cutter is arranged under the second upper sealing cutter and corresponds to a cutter edge; the first upper sealing cutter and the second upper sealing cutter are arranged in parallel, and lifting of the first upper sealing cutter and the second upper sealing cutter is adjusted through a lifting adjusting mechanism. The lifting adjusting mechanism adjusts the first upper sealing knife and the second upper sealing knife to ascend and descend in a reciprocating mode, and the first upper sealing knife and the second upper sealing knife are matched with the first lower sealing knife and the second lower sealing knife below the first upper sealing knife and the second upper sealing knife to achieve hot melting sealing of a packaging bag to be machined. A plurality of discontinuous fusion closed sections and a continuous fusion sealing structure are formed on the to-be-processed packaging bag, so that the sealing performance of the packaging bag in vacuum packaging is ensured, and meanwhile, the connecting flatness of the tail end of the packaging bag is ensured.

Description

Technical Field

[0001] This utility model relates to the field of bag processing technology, and in particular to a hot melt sealing device for packaging bags. Background Technology

[0002] In existing technologies, when packaging bags are heat-sealed, only a heat-sealing knife is used to heat-seal a continuous sealing strip on the packaging bag (e.g., Figure 6 (As shown); When subsequently cutting into individual bags, the ends of the packaging bags are not heat-fused, making the handle area prone to unstable stress and tearing. Currently, two continuous sealing strips can be formed by parallel heat-fusion on the packaging bag; however, the packaging bag production line uses front and rear winding rollers for transport, and the packaging bag is under tension during transport. If two continuous sealing strips are directly heat-fused onto the packaging bag, the tension during transport can easily cause the packaging bag to tear at the heat-fusion point. Utility Model Content

[0003] The purpose of this invention is to provide a hot-melt sealing device for packaging bags, which solves the problem that conventional packaging bags are easily torn by the conveying tension when two melting strips are hot-melted simultaneously.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model provides a hot-melt sealing device for packaging bags, including a first upper sealing knife and a second upper sealing knife arranged on a hot-melt machine frame and located above the packaging bag to be processed, a first lower sealing knife arranged directly below the first upper sealing knife and corresponding to the knife edge, and a second lower sealing knife arranged directly below the second upper sealing knife and corresponding to the knife edge.

[0006] Both the first lower sealing knife and the second lower sealing knife are located below the packaging bag to be processed; the first upper sealing knife and the second upper sealing knife are arranged in parallel, and both are adjusted in height by a lifting adjustment mechanism.

[0007] Furthermore, both the first lower sealing knife and the first upper sealing knife are provided with spaced hot melt teeth, which are used to heat melt the packaging bag to be processed to form a hot melt connection section. The hot melt connection section includes multiple discontinuous molten closed sections.

[0008] Furthermore, the blades of the second lower sealing knife and the second upper sealing knife are both planar continuous structures, and they are heat-melted on the packaging bag to be processed to form a heat-melted sealing section, which is a continuous melt-sealed structure spanning the width of the packaging bag to be processed.

[0009] Furthermore, both the first upper sealing knife and the second upper sealing knife are mounted on a lifting adjustment seat, and a lifting adjustment mechanism for adjusting the lifting of the lifting adjustment seat is provided on the frame. The lifting adjustment mechanism is an electric telescopic cylinder.

[0010] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0011] In this invention, the first upper sealing knife and the second upper sealing knife are reciprocated and raised by a lifting adjustment mechanism, which cooperates with the first lower sealing knife and the second lower sealing knife below to achieve heat-melt sealing of the packaging bag to be processed; multiple discontinuous molten closing sections and a continuous molten sealing structure are formed on the packaging bag to be processed, ensuring the sealing performance of the packaging bag in vacuum packaging, while also ensuring the flatness of the end connection of the packaging bag. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the packaging bag heat-sealing device in use according to the present invention;

[0014] Figure 2 This is a schematic diagram of the packaging bag to be processed on the hot melt sealing device for packaging bags of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of the heat-sealing device for packaging bags of this utility model;

[0016] Figure 4 This is a schematic diagram of the first sealing knife structure on the hot melt sealing device for packaging bags of this utility model;

[0017] Figure 5 This is a schematic diagram of the second sealing knife structure on the hot melt sealing device for packaging bags of this utility model;

[0018] Figure 6 This is a structural diagram of a packaging bag after heat-sealing in the prior art.

[0019] Explanation of reference numerals in the attached drawings: 1. Packaging bag to be processed; 11. Hot melt sealing section; 12. Handle opening; 13. Hot melt connection section; 21. First lower sealing knife; 22. First upper sealing knife; 23. Interval hot melt teeth; 31. Second lower sealing knife; 32. Second upper sealing knife; 4. Lifting and adjusting mechanism; 5. Lifting and adjusting seat. Detailed Implementation

[0020] refer to Figure 1 and Figure 3This embodiment discloses a hot-melt sealing device for packaging bags, including a first upper sealing knife 22 and a second upper sealing knife 32 installed on a hot-melt machine frame and located above the packaging bag 1 to be processed, a first lower sealing knife 21 installed directly below the first upper sealing knife 22 and corresponding to its blade, and a second lower sealing knife 31 installed directly below the second upper sealing knife 32 and corresponding to its blade; the first lower sealing knife 21 and the second lower sealing knife 31 are both installed below the packaging bag 1 to be processed; the first upper sealing knife 22 and the second upper sealing knife 32 are designed in parallel, and both are adjusted in height by a lifting adjustment mechanism 4.

[0021] In use, the first lower sealing knife 21 and the second lower sealing knife 31 are both fixedly installed on the frame and located below the packaging bag 1 to be processed; then the first upper sealing knife 22 and the second upper sealing knife 32 are adjusted to reciprocate and lift by the lifting adjustment mechanism 4, and cooperate with the first lower sealing knife 21 and the second lower sealing knife 31 below to realize the heat-sealing of the packaging bag 1 to be processed.

[0022] In this embodiment, reference Figure 4 Both the first lower sealing knife 21 and the first upper sealing knife 22 are designed with spaced heat-melting teeth 23. These spaced heat-melting teeth 23 are used to heat-melt the packaging bag 1 to be processed, forming a heat-melting connection section 13. The heat-melting connection section 13 includes multiple discontinuous molten closed sections (see reference). Figure 2 ).

[0023] In this embodiment, reference Figure 5 The cutting edges of the second lower sealing knife 31 and the second upper sealing knife 32 are both planar continuous structures, and they are heat-melted to form a heat-melt sealing section 11 on the packaging bag 1 to be processed. The heat-melt sealing section 11 is a continuous melt-sealed structure spanning the width of the packaging bag 1 to be processed (see reference). Figure 2 A handle opening 12 is provided on the packaging bag 1 to be processed, located between the hot melt connection section 13 and the hot melt sealing section 11.

[0024] refer to Figure 4 and Figure 5 The first upper sealing knife 22 and the second upper sealing knife 32 are both mounted on the lifting adjustment seat 5. A lifting adjustment mechanism 4 for adjusting the lifting of the lifting adjustment seat 5 is mounted on the frame. The lifting adjustment mechanism 4 is an electric telescopic cylinder, which is controlled by a servo motor and can reciprocate 30-100 times per minute.

[0025] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A heat-sealing device for packaging bags, characterized in that: The first upper sealing knife (22) and the second upper sealing knife (32) are arranged on the hot melting rack and above the packaging bag (1) to be processed, the first lower sealing knife (21) is arranged directly below the first upper sealing knife (22) and corresponds to the knife edge, and the second lower sealing knife (31) is arranged directly below the second upper sealing knife (32) and corresponds to the knife edge. The first lower sealing knife (21) and the second lower sealing knife (31) are arranged below the packaging bag (1) to be processed, the first upper sealing knife (22) and the second upper sealing knife (32) are arranged in parallel, and both are adjusted in height by the lifting adjusting mechanism (4).

2. The apparatus of claim 1 wherein: The first lower sealing knife (21) and the first upper sealing knife (22) are both provided with interval hot melting teeth (23), the interval hot melting teeth (23) melt on the packaging bag (1) to be processed to form a hot melting connection section (13), and the hot melting connection section (13) includes multiple discontinuous melting closed sections.

3. The apparatus of claim 1 wherein: The knife edges of the second lower sealing knife (31) and the second upper sealing knife (32) are both flat and continuous structures, and melt on the packaging bag (1) to be processed to form a hot melting sealing section (11), and the hot melting sealing section (11) is a continuous melting sealing structure across the width of the packaging bag (1) to be processed.

4. The apparatus of claim 1 wherein: The first upper sealing knife (22) and the second upper sealing knife (32) are arranged on the lifting adjusting seat (5), the lifting adjusting mechanism (4) is arranged on the rack to adjust the lifting of the lifting adjusting seat (5), and the lifting adjusting mechanism (4) is an electric telescopic cylinder.

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