A heat sealing mechanism for a sealing machine

Abstract

The utility model relates to packing machinery technical field discloses a kind of heat sealing mechanism for sealing machine, at least including a group of heat sealing assembly, the heat sealing assembly includes pedestal, heating sheet, heat conduction seat, installation surface is equipped on the pedestal, the heat conduction seat includes heat conduction plate, the connecting portion being equipped at the edge of heat conduction plate, the heating sheet is arranged between installation surface and heat conduction plate, the connecting portion is connected with the side of pedestal by connecting piece, the outer surface of heat conduction plate is configured as heat conduction plane. The utility model has the beneficial effects of simple structure, stable, heating uniform and convenient maintenance.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and in particular to a heat sealing mechanism for a sealing machine. Background Technology

[0002] In the packaging machinery field, the heat-sealing mechanism is the core component of a sealing machine, used to heat-seal packaging materials such as plastic bags and composite films to ensure the product's airtightness and shelf life. Traditional heat-sealing mechanisms typically employ a design where an electric heating element is directly embedded within a metal base, transferring heat to the bag opening surface through the base's heat conduction. However, this structure has significant drawbacks: First, the base is usually made of cast iron or copper alloy, resulting in a complex structure requiring precision machining to ensure the heating element's installation accuracy, which increases manufacturing costs and processing difficulty. Second, the heating surface of the base is planar, while the heating element is tubular, leading to uneven temperature distribution between the center and edges of the heating surface, affecting sealing quality. Furthermore, the potential gap between the heating element and the base results in low heat conduction efficiency and a long thermal response time, impacting sealing speed and production efficiency. Utility Model Content

[0003] In order to solve at least some of the problems existing in the prior art, this utility model provides a heat sealing mechanism for a sealing machine that is simple in structure, stable, heats evenly, and is easy to maintain.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A heat-sealing mechanism for a sealing machine includes at least one set of heat-sealing components. Each heat-sealing component includes a base, a heating element, and a heat-conducting seat. The base has a mounting surface, and the heat-conducting seat includes a heat-conducting plate and a connecting portion located at the edge of the heat-conducting plate. The heating element is disposed between the mounting surface and the heat-conducting plate. The connecting portion is connected to the side of the base via a connector. The outer surface of the heat-conducting plate is configured as a heat-conducting plane. By adopting the above technical solution: the heating element adopts a sheet-like structure and is directly installed between the base and the heat-conducting seat. The heat from the heating element can be evenly and stably transferred to the heat-conducting plate, which heats the bag opening through the heat-conducting plane. This structure eliminates the need for opening holes in the base to install heating tubes, resulting in a simpler overall structure and more uniform heating. The heat-conducting seat is mechanically connected to the base via the connecting portion, making the overall connection more stable and facilitating disassembly and maintenance.

[0005] Preferably, the heat-sealing assembly is configured in two sets, with the heat-conducting planes on the heat-conducting plates of the two sets distributed parallel to each other, forming a heat-sealing gap between the heat-conducting planes for the bag to pass through. The dual heat-sealing assembly provides symmetrical heating, ensuring uniform heating of the bag within the heat-sealing gap and consistent sealing quality; the parallel distribution ensures smooth passage of the bag opening and avoids uneven pressure.

[0006] Preferably, the connecting part is formed by bending the long side of the heat-conducting plate towards one side of the base, and the connecting part is detachably connected to the base. The connecting part, formed directly by bending, eliminates the need for installation between the connecting part and the heat-conducting plate, and increases the overall structural rigidity of the heat-conducting base; the detachable connection facilitates quick disassembly of the heat-conducting base and replacement of the heating element, improving the maintainability of the equipment.

[0007] Preferably, the connecting part is provided with a slot, and the slot is detachably connected to the base by fasteners. The slot allows for adjustment of the installation position, accommodating heating elements of different thicknesses, thus offering high versatility; the fasteners provide a reliable connection, ensuring connection stability.

[0008] Preferably, the connecting part is perpendicular to the heat-conducting plate, and a rounded corner is provided between the connecting part and the outer side of the heat-conducting plate. The vertical distribution optimizes the spatial layout; the rounded corner reduces stress concentration, and at the same time, the rounded corner can prevent scratching the heat-conducting belt or the bag body.

[0009] Preferably, the heating element is a ceramic heating element. Ceramic heating elements have high thermal efficiency and good insulation, providing a stable heat source and ensuring uniform heating, and are also safer to use.

[0010] Preferably, thermally conductive adhesive is used to fill the gap between the ceramic heating element and the heat-conducting plate. This adhesive fills the gap, enhancing heat conduction efficiency, reducing heat loss, and improving heating response speed.

[0011] Preferably, the heat-conducting base is made of copper, and the pedestal is made of aluminum. Copper has good thermal conductivity, ensuring rapid and uniform heating; aluminum is lightweight and low-cost, resulting in an economical and practical overall structure.

[0012] Therefore, this utility model has the following beneficial effects: (1) The heating element is installed and positioned by mechanical connection between the heat-conducting seat and the base, so as to achieve uniform heat conduction and improve the sealing quality; (2) The heating element is installed on the outside of the base, thereby reducing the restrictions on the base structure and material and reducing the cost; (3) The connecting part adopts slots and fasteners to achieve detachable connection with the base, and the spacing can be adjusted to meet the installation of heating elements of different thicknesses. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of one structure of the present utility model.

[0014] Figure 2 for Figure 1 Exploded view.

[0015] Figure 3 This is a schematic diagram of the structure of two sets of heating components.

[0016] Figure 4 for Figure 3 The right view.

[0017] Figure 5 for Figure 4 Sectional view at point AA.

[0018] Figure 6 This is a schematic diagram of the installation of this utility model on a sealing machine.

[0019] In the figure: heat sealing assembly 1, base 11, mounting surface 111, heating element 12, heat-conducting seat 13, heat-conducting plate 131, connecting part 133, connector 14, heat-conducting plane 132, heat sealing gap 2, slot 134, fastener 136, rounded corner 135, ceramic heating element 121. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial technical effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the scope of protection of the present utility model. It should be understood that the terms "first," "second," etc., used herein are for descriptive purposes only and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly specifying the number of technical features indicated. Features specified as "first" or "second" may expressly or implicitly indicate that at least one of those features is included. like Figure 1 and Figure 2 The heat sealing mechanism for a sealing machine shown includes at least one heat sealing assembly 1. The heat sealing assembly 1 includes a base 11, a heating element 12, and a heat-conducting seat 13. The base 11 has a mounting surface 111. The heat-conducting seat 13 includes a heat-conducting plate 131 and a connecting portion 133 located at the edge of the heat-conducting plate 131. The heating element 12 is disposed between the mounting surface 111 and the heat-conducting plate 131. The connecting portion 133 is connected to the side of the base 11 via a connector 14. The outer surface of the heat-conducting plate 131 is configured as a heat-conducting plane 132. In this structure, the heat generated by the heating element 12 is efficiently and evenly conducted to the heat-conducting plane 132 through the heat-conducting plate 131. The heat-conducting plane 132 evenly heats the bag opening, avoiding the uneven temperature caused by traditional electric heating tubes. Simultaneously, the heat-conducting seat 13 is securely mounted on the base 11 via the connector 14, ensuring a stable heat conduction path, reducing heat loss, improving sealing uniformity and equipment reliability. Furthermore, the structure is simple and facilitates daily maintenance and component replacement. In some embodiments, such as Figures 2-5As shown, the heat-sealing assembly 1 is configured as two sets, with the two sets of heat-sealing assemblies 1 distributed vertically. The heat-conducting planes 132 on the heat-conducting plates 131 of the two sets of heat-sealing assemblies 1 are distributed parallel to each other, and a heat-sealing gap 2 for the bag body to pass through is formed between the heat-conducting planes 132. Figure 6 As shown, after the two sets of heat sealing components 1 are installed on the sealing machine, two heat-conducting belts pass through the heat sealing gap. The bag opening enters from right to left between the two heat-conducting belts and passes through the heat sealing gap 2 as the heat-conducting belts move. The bag body is heated evenly on both sides in the heat sealing gap 2 to ensure that the temperature at the sealing point is consistent and to avoid poor sealing or local damage caused by heating on one side. In some embodiments, the connecting portion 133 is formed by bending the long side of the heat-conducting plate 131 toward one side of the base 11, and the connecting portion 133 is detachably connected to the base 11. The connecting portion 133 is provided with a slot 134, and a fastener 136 is used to form a detachable connection between the slot 133 and the base 11.

[0021] The bent connecting portion 133 enhances the structural strength of the heat-conducting base 13, resisting thermal deformation and mechanical stress, and extending its service life. Simultaneously, the detachable connection allows for quick disassembly of the heat-conducting base 13 for cleaning or replacement of the heating element 12, reducing downtime, improving production efficiency, and working in conjunction with the mounting surface 111 of the base 11 to ensure a consistently tight thermal contact surface, maintaining heat conduction performance. The connecting portion 133 is perpendicular to the heat-conducting plate 131, and a rounded corner 135 is provided between the outer sides of the connecting portion 133 and the heat-conducting plate 131. The slot 134 provides installation adjustment leeway, accommodating heating elements of different thicknesses, and ensuring a close fit between the heating element and the heating plate through adjustment, thereby improving heat conduction efficiency.

[0022] In some embodiments, the heating element 12 is configured as a ceramic heating element 121. The ceramic heating element 121 has high thermal efficiency, fast response and long life, provides a stable and reliable heat source and reduces temperature fluctuations; and has good insulation performance, making it safer to use.

[0023] The heat-conducting base 13 is made of copper, and the base 11 is made of aluminum. Because copper has better thermal conductivity, the heat-conducting base is made of copper to ensure that the heat from the heating element can be quickly transferred to the bag opening for heat sealing. Meanwhile, since the heating element is installed outside the base, the requirements for the base's material and structure are reduced; therefore, aluminum is chosen for the base. Aluminum's lightweight and good machinability reduce the overall weight and cost, while providing sufficient structural support and heat dissipation capacity. Referring to the accompanying drawings, the working principle of this utility model is as follows: The bag body is introduced through the heat-sealing gap 2, and the heat-conducting plane 132 uniformly heat-seales the bag opening under the heating of the heating element 12. Through structural improvements and material optimization of the heating component, the overall structure is made simpler and more stable, and the heating uniformity is further improved, while also reducing costs.

[0024] In the description of this utility model, it should be understood that the directions or positional relationships indicated by up, down, left, right, inner end, outer end, one end, and the other end are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the purpose of more clearly describing the technical solution of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as a limitation of this utility model. Although specific embodiments of the present invention are described in detail herein, they are given for illustrative purposes only and should not be construed as limiting the scope of the present invention. Various substitutions, alterations, and modifications may be conceived without departing from the spirit and scope of the present invention.

Claims

1. A heat sealing mechanism for a sealing machine, characterized in that, It includes at least one heat-sealing assembly (1), the heat-sealing assembly (1) includes a base (11), a heating element (12), and a heat-conducting seat (13). The base (11) is provided with a mounting surface (111). The heat-conducting seat (13) includes a heat-conducting plate (131) and a connecting part (133) provided on the edge of the heat-conducting plate (131). The heating element (12) is disposed between the mounting surface (111) and the heat-conducting plate (131). The connecting part (133) is connected to the side of the base (11) by a connector (14). The outer surface of the heat-conducting plate (131) is configured as a heat-conducting plane (132).

2. The heat sealing mechanism for a sealing machine according to claim 1, characterized in that, The heat sealing assembly (1) is configured as two sets, and the heat-conducting planes (132) on the heat-conducting plates (131) in the two sets of heat sealing assemblies (1) are distributed in parallel to each other, and a heat-sealing gap (2) is formed between the heat-conducting planes (132) for the bag body to pass through.

3. A heat sealing mechanism for a sealing machine according to claim 1 or 2, characterized in that, The connecting part (133) is formed by bending the long side of the heat-conducting plate (131) toward one side of the base (11), and the connecting part (133) and the base (11) are detachably connected.

4. The heat sealing mechanism for a sealing machine according to claim 3, characterized in that, The connecting part (133) is provided with a slot (134), and the slot (134) is connected to the base (11) by a fastener (136) to form a detachable connection.

5. A heat sealing mechanism for a sealing machine according to claim 3, characterized in that, The connecting part (133) is perpendicular to the heat-conducting plate (131), and a rounded corner (135) is provided between the connecting part (133) and the outer side of the heat-conducting plate (131).

6. The heat sealing mechanism for a sealing machine according to claim 1, characterized in that, The heating element (12) is configured as a ceramic heating element (121).

7. A heat sealing mechanism for a sealing machine according to claim 6, characterized in that, Thermally conductive adhesive is filled between the ceramic heating element (121) and the heat-conducting plate (131).

8. The heat sealing mechanism for a sealing machine according to claim 1, characterized in that, The heat-conducting base (13) is made of copper; the base (11) is made of aluminum.

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