A narrow margin closure mechanism

Abstract

This utility model discloses a narrow-margin sealing mechanism, comprising: a bag-pressing assembly, including an upper bag-pressing element and a lower bag-pressing element, and a bag-pressing drive element for driving the upper and lower bag-pressing elements to move relative to each other; a sealing assembly, including an upper sealing element and a lower sealing element, and a sealing drive element for driving the upper and lower sealing elements to move relative to each other; and a cutting assembly, disposed between the bag-pressing assembly and the sealing assembly, including a cutting element and a cutting drive element for driving the cutting element to move, the cutting element abutting against the outer side of the upper bag-pressing element. This utility model heat-seals the bag after the sealing assembly presses the bag opening, and during the operation of the bag-pressing assembly, the cutting assembly cuts the bag opening. Compared with existing bag-cutting methods, this effectively reduces the margin of the sealing area and saves packaging materials.

Description

Technical Field

[0001] This utility model relates to the field of packaging sealing machines, and in particular to a narrow-margin sealing mechanism. Background Technology

[0002] Existing sealing mechanisms require leaving a relatively long sealing distance on the packaging bag. For example, patent announcement number CN223046074U discloses a packaging bag heat sealing device, which includes: a conveying assembly and a heat sealing assembly; the conveying assembly is adapted to convey the packaging bag to be heat sealed; the heat sealing assembly has a pair of openable and closable suction members and a pair of heat sealing members that can open and close synchronously with the suction members. The clamping centers of the suction members and the heat sealing members are on the same horizontal line. The suction members are elastically telescopic, and the ends of the suction members protrude from the ends of the heat sealing members. When the suction members move from the open state to the closed state, the suction members first suction and then clamp the opening of the packaging bag to shape and position the opening of the packaging bag. As the suction members further clamp, the suction members undergo elastic deformation, and the heat sealing members clamp the positioned packaging bag to perform a heat sealing operation on the packaging bag. Utility Model Content

[0003] The present invention aims to at least partially solve one of the technical problems in the aforementioned technologies. Therefore, the purpose of this invention is to provide a sealing mechanism that shortens the sealing length.

[0004] To achieve the above objectives, embodiments of this utility model provide a narrow-margin sealing mechanism, comprising:

[0005] The bag-pressing assembly includes an upper bag-pressing element and a lower bag-pressing element, as well as a bag-pressing drive element that drives the upper bag-pressing element and the lower bag-pressing element to move relative to each other;

[0006] A sealing assembly, including an upper sealing element and a lower sealing element, and a sealing drive element for driving the upper sealing element and the lower sealing element to move relative to each other;

[0007] A cutting assembly is located between the bag pressing assembly and the sealing assembly, and includes a cutting element and a cutting drive for driving the cutting element to move. The cutting element abuts against the outer side of the upper bag pressing element.

[0008] According to the narrow-margin sealing mechanism of this utility model embodiment, the sealing component presses the bag opening and then heat seals it. During the process, the bag pressing component moves and the cutting component moves to cut the bag opening. Compared with the existing bag cutting method, it can effectively reduce the margin of the sealing area and save packaging materials.

[0009] In addition, the narrow-margin sealing mechanism proposed in the above embodiments of this utility model may also have the following additional technical features:

[0010] Optionally, the bag pressing assembly further includes a lower bag pressing drive element, the upper bag pressing element is fixed to an external structure, and the lower bag pressing element is driven by the lower bag pressing drive element to move closer to or further away from the upper bag pressing element.

[0011] Optionally, the upper sealing element is fixed, and the lower sealing element moves, moving closer to or away from the upper sealing element.

[0012] Optionally, the end face of the pressure bag element is provided with a serrated structure, which cooperates with the cutting element to cut the packaging bag.

[0013] Optionally, the cutting element is a single blade, and the side closest to the sealing element is a plane.

[0014] Optionally, the cutting element is inclined along the blade length direction, with one end of the blade contacting the packaging bag before the other end. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure according to an embodiment of the present utility model;

[0016] Figure 2 This is a front view of a structure according to an embodiment of the present invention;

[0017] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0018] Figure 4 This is a side view of the structure according to an embodiment of the present utility model;

[0019] Figure 5 for Figure 4 A magnified view of a portion of the image.

[0020] Label Explanation:

[0021] Bag pressing assembly 1 Upper bag pressing element 11 Lower bag pressing element 12 Bag pressing drive element 122 Sawtooth structure 123

[0022] Sealing assembly 2, upper sealing element 21, lower sealing element 22

[0023] Cutting assembly 3, cutting element 31, cutting drive 32. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0026] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0027] Figures 1 to 5 A narrow-margin sealing mechanism according to an embodiment of the present utility model includes:

[0028] The bag-pressing assembly 1 includes an upper bag-pressing element 11 and a lower bag-pressing element 12, and a bag-pressing drive element 122 for driving the upper bag-pressing element 11 and the lower bag-pressing element 12 to move relative to each other. The bag-pressing assembly 1 also includes the lower bag-pressing drive element 122. The upper bag-pressing element 11 is fixed to an external structure, and the lower bag-pressing element 12 is driven by the lower bag-pressing drive element 122 to move closer to or further away from the upper bag-pressing element 11. The end face of the lower bag-pressing element 12 is provided with a serrated structure 123, which cooperates with the cutting element 31 to cut the packaging bag.

[0029] The sealing assembly 2 includes an upper sealing element 21 and a lower sealing element 22, as well as a sealing drive element that drives the upper sealing element 21 and the lower sealing element 22 to move relative to each other; the upper sealing element 21 is fixed, and the lower sealing element 22 moves, moving closer to or away from the upper sealing element 21.

[0030] The cutting assembly 3, located between the bag-pressing assembly 1 and the sealing assembly 2, includes a cutting element 31 and a cutting drive 32 that drives the cutting element 31 to move. The cutting element 31 abuts against the outer side of the upper bag-pressing assembly 11. The cutting element 31 is inclined along its blade length, with one end of the blade contacting the packaging bag before the other end. The cutting element 31 is a single blade, and the side closest to the sealing assembly is flat.

[0031] This invention allows for a 3mm margin at the sealing edge of the packaging bag. Currently, most packaging products on the market have a cutting edge to sealing length of 8-10mm. This invention reduces the cutting edge to sealing length to 3mm, thereby shortening the packaging bag length, reducing material waste, and ultimately reducing costs.

[0032] Specifically, the cutting element 31 is installed 2mm away from the sealing assembly 2, and positioned between the sealing assembly 2 and the bag pressing assembly 1. During operation, the bag pressing assembly 1 closes first, and the sealing assembly 2 begins to heat up and close. When both the sealing block and the bag pressing block are pressed tightly, the cutting element 31 extends and cuts off the tail material, thus achieving the function of leaving only 3mm from the sealing edge to the cut edge.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A narrow-margin sealing mechanism, characterized in that: include The bag-pressing assembly includes an upper bag-pressing element and a lower bag-pressing element, as well as a bag-pressing drive element that drives the upper bag-pressing element and the lower bag-pressing element to move relative to each other; A sealing assembly, including an upper sealing element and a lower sealing element, and a sealing drive element for driving the upper sealing element and the lower sealing element to move relative to each other; A cutting assembly is located between the bag pressing assembly and the sealing assembly, and includes a cutting element and a cutting drive for driving the cutting element to move. The cutting element abuts against the outer side of the upper bag pressing element.

2. The narrow-margin sealing mechanism as described in claim 1, characterized in that: The bag pressing assembly also includes a lower bag pressing drive element. The upper bag pressing element is fixed to an external structure. The lower bag pressing element is driven by the lower bag pressing drive element to move closer to or further away from the upper bag pressing element.

3. The narrow-margin sealing mechanism as described in claim 1, characterized in that: The upper sealing element is fixed, while the lower sealing element moves, moving closer to or away from the upper sealing element.

4. A narrow-margin sealing mechanism as described in claim 1, characterized in that: The end face of the pressure bag element is provided with a serrated structure, which cooperates with the cutting element to cut the packaging bag.

5. A narrow-margin sealing mechanism as described in claim 1, characterized in that: The cutting element is a single blade, and the side closest to the sealing element is a flat surface.

6. A narrow-margin sealing mechanism as described in claim 1, characterized in that: The cutting element is inclined along the blade length direction, with one end of the blade contacting the packaging bag before the other end.

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