Edge sealing device for cylindrical filling bags

Abstract

The utility model discloses a kind of edge sealing devices of cylindrical filling bag, comprising: bearing frame, for supporting effect;Supporting ring, fixed on bearing frame, for lower support when heat sealing, space for placing cylindrical filling bag when heat sealing is opened on bearing frame;Heat sealing ring, above supporting ring and opposite with supporting ring are used to heat sealing, electric heating tube is arranged in heat sealing ring, heat sealing ring is connected on bearing frame by lifting mechanism, by the utility model, when heat sealing ring is lowered to heat sealing, it will drive isolation paper synchronous descent, isolation paper is always below heat sealing ring, so that isolation paper is clamped between bag bottom membrane material and heat sealing ring when heat sealing, it is not necessary to manually lay isolation paper every time heat sealing, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat sealing technology, specifically to a sealing device for a cylindrical filling bag. Background Technology

[0002] A type of cylindrical liquid filling bag in the prior art, such as Figure 1 As shown, it is made of composite aluminum film. During production, the film material is first rolled into a cylindrical aluminum film bag body, and then a circular aluminum film bag bottom is heat-sealed at the bottom of the bag body.

[0003] During heat sealing, the aluminum foil bag is typically inverted with the bottom facing up. Then, a layer of aluminum foil is placed on top as the bag bottom. The heating element of the heat sealer presses against the surface of the aluminum foil, melting it and sealing it to the bag. To prevent the molten aluminum foil from sticking to the heating element, a release liner (such as Teflon film) is placed on the surface of the aluminum foil during heat sealing, with the heating element pressing against the release liner.

[0004] In practice, the release paper needs to be laid on the aluminum film manually for each heat sealing process, which is inefficient. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model proposes a sealing device for cylindrical filling bags.

[0006] To achieve the above-mentioned technical effects, the present invention adopts the following solution:

[0007] A sealing device for a cylindrical filling bag includes:

[0008] A support frame, used to provide support;

[0009] A support ring is fixed to the support frame and is used for lower support during heat sealing. The support frame has a space for placing cylindrical filling bags during heat sealing.

[0010] A heat-sealing ring, located above and opposite to the supporting ring, is used for heat sealing. The heat-sealing ring is equipped with an electric heating tube and is connected to the support frame via a lifting mechanism.

[0011] The release paper holder is fixedly mounted on the lifting mechanism and moves up and down synchronously with the heat-sealing ring. It is used to install the release paper and position it below the heat-sealing ring.

[0012] In a preferred embodiment, the release paper support includes an unwinding roller and a rewinding roller mounted on a lifting mechanism. The unwinding roller and the rewinding roller are respectively located on both sides of the heat-sealing ring. The unwinding roller is used to unwind the release paper, and the rewinding roller is used to roll up the release paper after use.

[0013] In a preferred embodiment, the heat-sealing ring includes a ring-shaped heat-sealing element located at the lower end and a cover plate matched and disposed at the upper end of the heat-sealing element. The lower end surface of the heat-sealing element is set as a plane, and the upper end of the heat-sealing element is provided with an installation groove arranged along the circumference of the heat-sealing element. The heating element is installed in the installation groove, and the cover plate is fixed to the upper end of the heat-sealing element with bolts to seal the installation groove.

[0014] In a preferred embodiment, a heat-insulating coating layer is provided on the inner walls of both sides of the mounting groove and the inner wall of the cover plate.

[0015] In a preferred embodiment, the lifting mechanism includes at least one cylinder vertically mounted on a support frame, and the heat-sealed ring is connected to the telescopic rod of the cylinder.

[0016] In a preferred embodiment, a shelf is provided on one side of the support frame.

[0017] Compared with existing technologies, the beneficial effects are:

[0018] This invention features a simple structure and convenient use. A cylindrical bag is placed in the space of a support frame, bottom facing upwards, and passes through the center of a supporting ring. The edges of the bag are then folded outwards to the top of the supporting ring, and a bottom film is placed on top. The heat-sealing ring is lowered by a lifting mechanism, pressing down on the bottom film and pressing both the bottom film and the bag's edges firmly against the top of the supporting ring. The high temperature of the heat-sealing ring partially melts the bottom film, achieving a heat-sealed connection with the bottom edge of the bag. Finally, the lifting mechanism raises the heat-sealing ring back to its original position. Excess bottom film is then trimmed around the outside of the supporting ring using a knife. This invention provides a simple and convenient way to heat-seal the bag body and bottom. As the heat-sealing ring descends, it also lowers the release paper, which remains below the heat-sealing ring. This ensures the release paper is sandwiched between the bottom film and the heat-sealing ring during heat sealing, eliminating the need for manual placement of the release paper for each heat seal and improving work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a cylindrical filling bag in the prior art.

[0020] Figure 2 This is a schematic diagram of the structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of this utility model in use.

[0022] Figure 4 This is a partial structural schematic diagram of this utility model.

[0023] Figure 5 This is a schematic diagram of the cross-section of the heat-sealed ring in this utility model.

[0024] Reference numerals: 10, bag body; 20, bag bottom; 30, support frame; 40, support ring; 50, heat-sealing ring; 501, heat-sealing component; 502, cover plate; 503, mounting groove; 504, electric heating tube; 505, support frame; 60, release paper bracket; 601, unwinding roller; 602, winding roller; 70, lifting mechanism; 701, cylinder; 80, storage plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] A sealing device for a cylindrical filling bag includes: a support frame 30, a support ring 40, a heat-sealing ring 50, and a release paper support 60.

[0027] The support frame 30 is used to provide support and forms the framework of the entire device.

[0028] The support ring 40 is fixed on the support frame 30 and is used for lower support during heat sealing. The support frame 30 has a space for placing cylindrical filling bags during heat sealing.

[0029] The heat-sealing ring 50 is located above and opposite the supporting ring 40 for heat sealing. The heat-sealing ring 50 is equipped with an electric heating tube 504. The heat-sealing ring 50 is connected to the support frame 30 through a lifting mechanism 70. The lower end of the lifting mechanism 70 is fixedly connected to a mounting frame. The mounting frame is arranged in a "+" shape. The center of the mounting frame is located above the center of the heat-sealing ring 50. The four directions of the mounting frame are fixedly connected to the upper end of the heat-sealing ring 50 through a connecting rod, so that the heat-sealing ring 50 is suspended below the mounting frame.

[0030] The release paper bracket 60 is fixedly mounted on the lifting mechanism 70, specifically fixed on the mounting frame and raised and lowered synchronously with the heat sealing ring 50. It is used to install the release paper and position the release paper below the heat sealing ring 50.

[0031] The cylindrical bag body 10 is placed in the space of the support frame 30 with the bottom of the bag body 10 facing upwards and passing through the middle of the support ring 40. Then, the edges of the bag body 10 are folded outwards to the upper end of the support ring 40, and a bag bottom 20 film is placed on top. The release paper is installed on the release paper bracket 60. The heat sealing ring 50 is driven to descend by the lifting mechanism 70, pressing it onto the bag bottom 20 film and pressing the bag bottom 20 film and the edges of the bag body 10 together to the upper end of the support ring 40. The high temperature of the heat sealing ring 50 partially melts the bag bottom 20 film, thereby achieving a heat-sealed connection with the lower edge of the bag body 10. Finally, the heat sealing ring 50 is driven to rise and reset by the lifting mechanism 70. Then, the excess bag bottom 20 film is trimmed around the outside of the support ring 40 with a knife. The heat sealing of the bag body 10 and the bag bottom 20 by this utility model is simple and convenient. As the heat-sealing ring 50 descends, it will cause the release paper to descend synchronously. The release paper is always below the heat-sealing ring 50, so that during heat sealing, the release paper is sandwiched between the film material at the bottom of the bag 20 and the heat-sealing ring 50. This eliminates the need for manual placement of the release paper for each heat sealing, thus improving work efficiency.

[0032] In a preferred embodiment, the release paper support 60 includes an unwinding roller 601 and a rewinding roller 602 mounted on a lifting mechanism 70. The unwinding roller 601 and the rewinding roller 602 are respectively located on both sides of the heat-sealing ring 50. The unwinding roller 601 is used to unwind the release paper, and the rewinding roller 602 is used to roll up the release paper after use.

[0033] As the number of heat-sealing cycles increases, the effectiveness of the release liner gradually decreases, requiring replacement after multiple uses. In this invention, a certain length of release liner is rolled into a circle and installed on the unwinding roller 601. The free end of the release liner is pulled out and passed under the heat-sealing ring 50 before being connected to the take-up roller 602. After multiple uses, simply rotate the take-up roller 602 to rewind the used portion of the release liner onto the take-up roller 602, and pull the unused portion from the unwinding roller 601 under the heat-sealing ring 50. This method is simple and convenient, eliminating the need for frequent disassembly and reassembly of the release liner.

[0034] In a preferred embodiment, the heat-sealing ring 50 includes a ring-shaped heat-sealing element 501 located at the lower end and a cover plate 502 matched and disposed at the upper end of the heat-sealing element 501. The lower end surface of the heat-sealing element 501 is set as a plane for pressing onto the film material of the bag bottom 20 for heat sealing. The upper end of the heat-sealing element 501 is provided with an installation groove 503 arranged along the circumference of the heat-sealing element 501. The electric heating tube 504 is installed in the installation groove 503. The cover plate 502 is fixed to the upper end of the heat-sealing element 501 by bolts to seal the installation groove 503. The lower end of the connecting rod is fixedly connected to the cover plate 502.

[0035] In a preferred embodiment, a heat-insulating coating layer is provided on the inner walls of both sides of the mounting groove 503 and the inner wall of the cover plate 502.

[0036] In a preferred embodiment, the lifting mechanism 70 includes at least one cylinder 701 vertically mounted on the support frame 30, and the heat-sealing ring 50 is connected to the telescopic rod of the cylinder 701.

[0037] In a preferred embodiment, a shelf 80 is provided on one side of the support frame 30. The shelf 80 is used to place tools such as scissors and cutting shears needed during the work, making them easy to access.

[0038] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A sealing device for a cylindrical filling bag, characterized in that, include: The support frame (30) is used to provide support; A support ring (40) is fixed on a support frame (30) for lower support during heat sealing. The support frame (30) has a space for placing cylindrical filling bags during heat sealing. A heat-sealing ring (50) is located above and opposite to the support ring (40) for heat sealing. The heat-sealing ring (50) is provided with an electric heating tube (504). The heat-sealing ring (50) is connected to the support frame (30) through a lifting mechanism (70). The release paper bracket (60) is fixed on the lifting mechanism (70) and moves up and down synchronously with the heat sealing ring (50). It is used to install the release paper and position the release paper below the heat sealing ring (50).

2. The sealing device for the cylindrical filling bag as described in claim 1, characterized in that, The release paper holder (60) includes an unwinding roller (601) and a winding roller (602) mounted on a lifting mechanism (70). The unwinding roller (601) and the winding roller (602) are respectively located on both sides of the heat-sealing ring (50). The unwinding roller (601) is used to unwind the release paper, and the winding roller (602) is used to roll up the release paper after use.

3. The sealing device for the cylindrical filling bag as described in claim 1, characterized in that, The heat-sealing ring (50) includes a ring-shaped heat-sealing element (501) located at the lower end and a cover plate (502) matched and disposed at the upper end of the heat-sealing element (501). The lower end surface of the heat-sealing element (501) is set as a plane. The upper end of the heat-sealing element (501) is provided with an installation groove (503) arranged along the circumference of the heat-sealing element (501). The electric heating tube (504) is installed in the installation groove (503). The cover plate (502) is fixed to the upper end of the heat-sealing element (501) by bolts to seal the installation groove (503).

4. The sealing device for the cylindrical filling bag as described in claim 3, characterized in that, A heat-insulating coating layer is provided on the inner walls of both sides of the mounting groove (503) and the inner wall of the cover plate (502).

5. The sealing device for the cylindrical filling bag as described in claim 1, characterized in that, The lifting mechanism (70) includes at least one cylinder (701) vertically mounted on the support frame (30), and the heat-sealing ring (50) is connected to the telescopic rod of the cylinder (701).

6. The sealing device for the cylindrical filling bag as described in claim 1, characterized in that, The support frame (30) is provided with a shelf (80) on one side.

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