Heat sealing mechanism for bag mouth of flexible packaging bag

Abstract

The utility model provides a heat-sealing mechanism for a bag mouth of a flexible packaging bag. The heat-sealing mechanism comprises a first heat-sealing piece, a second heat-sealing piece and a cooling piece, the first heat sealing piece is provided with a movable first heating claw and a movable second heating claw, and the first heating claw and the second heating claw are suitable for jointly clamping and heating the two outer side faces of the sealing position of the packaging bag, so that the two inner side faces of the sealing position of the packaging bag are bonded to the peripheral face of a bag mouth, and a primary heat sealing state is formed; the second heat-sealing piece is provided with a third movable heating claw and a fourth movable heating claw, and the third heating claw and the fourth heating claw are suitable for jointly clamping the initial heat-sealing position and the non-heat-sealing position of the sealing opening of the packaging bag and conducting heating, so that a complete heat-sealing state is formed; the cooling piece is provided with a movable first cooling claw and a movable second cooling claw so as to clamp the sealing position of the packaging bag in the complete heat-sealing state at the same time and cool the sealing position of the packaging bag. The heat-sealing mechanism for the bag mouth of the flexible packaging bag is simple in structure, the sealing position can be cooled in time, and the sealing performance of the sealing position can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, and particularly relates to a heat-sealing mechanism for the mouth of a flexible packaging bag. Background Art

[0002] Some liquid products on the market, such as laundry detergent, soy sauce and vinegar, beverages, etc., are generally sold in flexible packaging bags. In order to facilitate pouring out the liquid and sealing it after pouring, a mouth is generally provided on the packaging bag.

[0003] In the related art, a heat-sealing mechanism is usually adopted between the mouth and the packaging bag to form a seal by hot pressing between the mouth and the packaging bag. However, heat remains after heat-sealing between the mouth and the packaging bag and cannot be cooled and fixed in time. If there is vibration or touch to the mouth during the transportation of the packaging bag, poor sealing is likely to occur. Therefore, it is necessary to improve the heat-sealing mechanism. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems in the above-mentioned technologies to some extent. For this reason, the purpose of the utility model is to provide a heat-sealing mechanism for the mouth of a flexible packaging bag, which has a simple structure and can cool the sealing part in time to ensure the sealing performance of the sealing part.

[0005] To achieve the above purpose, the utility model provides a heat-sealing mechanism for the mouth of a flexible packaging bag, which includes: a first heat-sealing member, a second heat-sealing member and a cooling member;

[0006] The first heat-sealing member has a movable first heating claw and a second heating claw, and the first heating claw and the second heating claw are adapted to jointly clamp the two outer sides of the sealing part of the packaging bag and heat, so as to bond the two inner sides of the sealing part of the packaging bag to the outer peripheral surface of the mouth, so that the packaging bag forms a preliminary heat-sealed state;

[0007] The second heat-sealing member has a movable third heating claw and a fourth heating claw, and the third heating claw and the fourth heating claw are adapted to jointly clamp the preliminary heat-sealed position and the non-heat-sealed position of the sealing part of the packaging bag and heat, so that the sealing part of the packaging bag forms a completely heat-sealed state;

[0008] The cooling member has a movable first cooling claw and a second cooling claw, and the first cooling claw and the second cooling claw are adapted to jointly clamp the sealing part of the packaging bag in the completely heat-sealed state to cool the sealing part of the packaging bag.

[0009] A heat-sealing mechanism for the nozzle of a soft packaging bag according to an embodiment of the present utility model clamps and heats the two outer sides of the sealing portion of the packaging bag together with the inner nozzle at the sealing portion through a first heat-sealing member, so that the local portion of the sealing portion adheres to the nozzle. The sealing portion of the packaging bag is clamped and heated together with the nozzle through a second heat-sealing member, so that the sealing portion of the packaging bag completely heat-seals the nozzle. The sealing portion of the completely heat-sealed packaging bag is clamped by a cooling member to cool the sealing portion. The heat-sealing mechanism for the nozzle of the soft packaging bag has a simple structure, can cool the sealing portion in time, and can ensure the sealing performance of the sealing portion.

[0010] In addition, a heat-sealing mechanism for the nozzle of a soft packaging bag according to the above embodiment of the present utility model may further have the following additional technical features:

[0011] Optionally, it further includes a driving assembly. The driving assembly has a first mounting plate, a first moving driving member, a second mounting plate, and a second moving driving member. The first moving driving member is connected to the first mounting plate. The first heating claw, the third heating claw, and the first cooling claw are provided on the first mounting plate. The second moving driving member is connected to the second mounting plate. The second heating claw, the fourth heating claw, and the second cooling claw are provided on the second mounting plate.

[0012] Further, the driving assembly includes a third mounting plate and a fourth mounting plate. The first moving driving member is arranged on the third mounting plate. The first mounting plate is provided with a first guide post, and the first guide post is slidably inserted into the third mounting plate. The second moving driving member is arranged on the fourth mounting plate. The second mounting plate is provided with a second guide post, and the second guide post is slidably inserted into the fourth mounting plate.

[0013] Further, the first heating claw and / or the second heating claw are telescopically arranged.

[0014] Further, the first cooling claw and / or the second cooling claw are telescopically arranged.

[0015] Optionally, after the first heating claw and the second heating claw, the third heating claw and the fourth heating claw, and the first cooling claw and the second cooling claw are clamped, they form a rhombus shape.

[0016] Further, the first heating claw and the second heating claw, the third heating claw and the fourth heating claw, and the first cooling claw and the second cooling claw are detachably connected to their corresponding first mounting plate and second mounting plate. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of a heat-sealing mechanism for the nozzle of a soft packaging bag according to an embodiment of the present utility model;

[0018] Figure 2 is Figure 1 a schematic structural diagram from another perspective;

[0019] Explanation of reference numerals:

[0020] The first heat-sealing member 1, the first heating claw 11, the second heating claw 12, the second heat-sealing member 2, the third heating claw 21, the fourth heating claw 22, the cooling member 3, the first cooling claw 31, the second cooling claw 32, the driving assembly 4, the first mounting plate 41, the first moving driving member 42, the second mounting plate 43, the second moving driving member 44, the third mounting plate 45, the fourth mounting plate 46, the first guide post 47, and the second guide post 48. Specific embodiments

[0021] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0022] In order to better understand the above technical solution, the exemplary embodiments of the present utility model will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present utility model and to be able to fully convey the scope of the present utility model to those skilled in the art.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings of the specification and specific embodiments.

[0024] Next, refer to Figure 1-2 to describe in detail the implementation of the heat-sealing mechanism for the mouth of a soft packaging bag according to an embodiment of the present utility model.

[0025] The heat-sealing mechanism for the mouth of a soft packaging bag according to an embodiment of the present utility model includes: a first heat-sealing member 1, a second heat-sealing member 2, and a cooling member 3.

[0026] Specifically, the first heat-sealing member 1 has a movable first heating jaw 11 and a second heating jaw 12. The first heating jaw 11 and the second heating jaw 12 are adapted to jointly clamp and heat the two outer sides of the sealing portion of the packaging bag, so as to bond the two inner sides of the sealing portion of the packaging bag to the outer peripheral surface of the bag mouth, thereby making the packaging bag in a preliminary heat-sealed state; the second heat-sealing member 2 has a movable third heating jaw 21 and a fourth heating jaw 22. The third heating jaw 21 and the fourth heating jaw 22 are adapted to jointly clamp and heat the preliminary heat-sealed position and the non-heat-sealed position of the sealing portion of the packaging bag, so as to make the sealing portion of the packaging bag in a completely heat-sealed state; the cooling member 3 has a movable first cooling jaw 31 and a second cooling jaw 32. The first cooling jaw 31 and the second cooling jaw 32 are adapted to jointly clamp the sealing portion of the packaging bag in the completely heat-sealed state to cool the sealing portion of the packaging bag.

[0027] That is to say, the first heating jaw 11 and the second heating jaw 12 jointly clamp and heat from the two outer sides of the sealing portion of the packaging bag towards the bag mouth inside the sealing portion, so that the two inner sides of the sealing portion are bonded to the outer peripheral surface of the bag mouth. At this time, the sealing portion of the packaging bag is in a preliminary heat-sealed state with some parts not bonded yet. The packaging bag in the preliminary heat-sealed state is transferred to the station where the second heat-sealing member 2 is located. The third heating jaw 21 and the fourth heating jaw 22 clamp the sealing portion of the packaging bag again from the two outer sides of the sealing portion of the packaging bag, so that the area between the sealing portion and the bag mouth is further heated, and at the same time, the unbonded parts are heated, making the bag mouth and the sealing portion of the packaging bag in a completely heat-sealed state. Since there is still heat after complete heat-sealing, the sealing portion is prone to damage when colliding or vibrating. When the packaging bag is transferred to the station of the cooling member 3, the first cooling jaw 31 and the second cooling jaw 32 jointly clamp the completely heat-sealed sealing portion to cool it down, so that the bonded part of the sealing portion quickly solidifies, thereby ensuring the sealing performance of the heat-sealing.

[0028] Thus, through the first heat-sealing member 1 clamping and heating synchronously from the two outer sides of the sealing portion of the packaging bag together with the bag mouth inside the sealing portion, the sealing portion is partially adhered to the bag mouth. Through the second heat-sealing member 2 clamping and heating the sealing portion of the packaging bag together with the bag mouth, the sealing portion of the packaging bag completely heat-seals the bag mouth. Through the cooling member 3 clamping the sealing portion of the completely heat-sealed packaging bag, the sealing portion is cooled. The heat-sealing mechanism for the bag mouth of the flexible packaging bag has a simple structure, can cool the sealing portion in time, and can ensure the sealing performance of the sealing portion.

[0029] For driving the operations of the first heat-sealing member 1, the second heat-sealing member 2, and the cooling member 3, a driving assembly 4 is further included. The driving assembly 4 has a first mounting plate 41, a first moving driving member 42, a second mounting plate 43, and a second moving driving member 44. The first moving driving member 42 is connected to the first mounting plate 41. The first mounting plate 41 is provided with a first heating jaw 11, a third heating jaw 21, and a first cooling jaw 31. The second moving driving member 44 is connected to the second mounting plate 43. The second mounting plate 43 is provided with a second heating jaw 12, a fourth heating jaw 22, and a second cooling jaw 32. Understandably, the arrangement of the first mounting plate 41 facilitates the installation of the first heating jaw 11, the third heating jaw 21, and the first cooling jaw 31. The arrangement of the second mounting plate 43 facilitates the installation of the second heating jaw 12, the fourth heating jaw 22, and the second cooling jaw 32. Thus, it is convenient for the first moving driving member 42 and the second moving driving member 44 to drive the first mounting plate 41 and the second mounting plate 43 to approach or move away from the sealing position of the packaging bag synchronously. When approaching, it is convenient for the heat-sealing and cooling operations of the packaging bag. When moving away, it is convenient for the transfer of the packaging bag at each working station, and the structure is simple. Among them, the first moving driving member 42 and the second moving driving member 44 can be cylinders, and the first mounting plate 41 can be made of heat-insulating material.

[0030] For the driving assembly 4, the driving assembly 4 includes a third mounting plate 45 and a fourth mounting plate 46. The first moving driving member 42 is arranged on the third mounting plate 45. The first mounting plate 41 is provided with a first guide post 47. The first guide post 47 slidably penetrates into the third mounting plate 45. The second moving driving member 44 is arranged on the fourth mounting plate 46. The second mounting plate 43 is provided with a second guide post 48. The second guide post 48 slidably penetrates into the fourth mounting plate 46. Understandably, the arrangements of the third mounting plate 45 and the fourth mounting plate 46 facilitate the installation of the first moving driving member 42 and the second moving driving member 44. The arrangements of the first guide post 47 and the second guide post 48 facilitate enhancing the stability of the movement of the first mounting plate 41 and the second mounting plate 43. Thus, it is convenient for the first heat-sealing member 1, the second heat-sealing member 2, and the cooling member 3 to stably clamp the packaging bag, and further facilitate improving the stability of the heat-sealing and cooling operations. Among them, the number of the first guide posts 47 can be two, which are respectively arranged on both sides of the first moving driving member 42. The number of the second guide posts 48 can be two, which are respectively arranged on both sides of the second moving driving member 44.

[0031] For the first heating jaw 11 and the second heating jaw 12, the first heating jaw 11 and / or the second heating jaw 12 are telescopically arranged. Understandably, by the telescopic arrangement of the first heating jaw 11 and / or the second heating jaw 12, it is convenient for the first heating jaw 11 and the second heating jaw 12 to have elasticity when clamping the sealing part of the packaging bag, facilitating the clamping of bag mouths of different specifications. At the same time, it can avoid damaging the sealing part and the bag mouth of the packaging bag due to hard clamping. Among them, the telescopic function of the telescopic arrangement of the first heating jaw 11 and / or the second heating jaw 12 can be realized by the cooperation of a slide bar and a spring.

[0032] For the first cooling jaw 31 and the second cooling jaw 32, the first cooling jaw 31 and / or the second cooling jaw 32 are telescopically arranged. Understandably, by the telescopic arrangement of the first cooling jaw 31 and / or the second cooling jaw 32, it is convenient for the first cooling jaw 31 and the second cooling jaw to have elasticity when clamping the sealing part of the packaging bag, facilitating the clamping of bag mouths of different specifications. At the same time, it can avoid damaging the sealing part and the bag mouth of the packaging bag due to hard clamping. Among them, the telescopic function of the telescopic arrangement of the first cooling jaw 31 and / or the second cooling jaw 32 can be realized by the cooperation of a slide bar and a spring.

[0033] Regarding the shape of the clamping opening, after the first heating jaw 11 and the second heating jaw 12, the third heating jaw 21 and the fourth heating jaw 22, and the first cooling jaw 31 and the second cooling jaw 32 are clamped, it is in a rhombus shape. Understandably, by the rhombus shape setting, it is convenient for multiple faces to contact and heat the sealing part of the packaging bag, and at the same time, it can improve the compatibility of clamping different bag mouths. Among them, the shape of the clamping opening at each station can be set according to the specific shape of the bag mouth.

[0034] For the switching between different products, the first heating claw 11 and the second heating claw 12, the third heating claw 21 and the fourth heating claw 22, and the first cooling claw 31 and the second cooling claw 32 are detachably connected to their corresponding first mounting plate 41 and second mounting plate 43. It can be understood that when heat-sealing packaging bags and bag mouths with large size differences, the first heating claw 11, the second heating claw 12, the third heating claw 21, the fourth heating claw 22, the first cooling claw 31 and the second cooling claw 32 can be detached, and then the first heating claw 11, the second heating claw 12, the third heating claw 21, the fourth heating claw 22, the first cooling claw 31 and the second cooling claw 32 that match the new packaging bag can be replaced, so as to meet the processing requirements of different specifications of products. Among them, partitions can also be provided between the first heating claw 11, the second heating claw 12, the third heating claw 21, the fourth heating claw 22, the first cooling claw 31 and the second cooling claw 32 and their corresponding first mounting plate 41 and second mounting plate 43 to avoid heat transfer between the first heating claw 11, the second heating claw 12, the third heating claw 21, the fourth heating claw 22, the first cooling claw 31 and the second cooling claw 32 and the first mounting plate 41 and the second mounting plate 43. In addition, the first heating claw 11, the second heating claw 12, the third heating claw 21 and the fourth heating claw 22 can be heated by heating rods, and the first cooling claw 31 and the second cooling claw 32 can be cooled by semiconductor cooling heads.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0037] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0040] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A heat sealing mechanism for a flexible packaging bag spout, characterized in that: include: a first heat sealing member, a second heat sealing member, and a cooling member; The first heat-sealing member comprises a first movable heating claw and a second movable heating claw, wherein the first heating claw and the second heating claw are adapted to clamp and heat two outer side surfaces of the sealing portion of the packaging bag, so as to bond two inner side surfaces of the sealing portion of the packaging bag to the outer peripheral surface of the bag mouth, thereby forming a preliminary heat-sealed state of the packaging bag; The second heat-sealing member has a movable third heating claw and a fourth heating claw, and the third heating claw and the fourth heating claw are suitable for clamping the preliminary heat-sealed position and the unheat-sealed position of the sealing portion of the packaging bag together and heating them, so that the sealing portion of the packaging bag forms a complete heat-sealed state; The cooling member comprises a first movable cooling claw and a second movable cooling claw, wherein the first cooling claw and the second cooling claw are suitable for clamping together the sealed portion of the packaging bag in a completely heat-sealed state to cool the sealed portion of the packaging bag.

2. The flexible packaging bag spout heat sealing mechanism according to claim 1, characterized in that: It also includes a driving assembly, which has a first mounting plate, a first movable driving member, a second mounting plate and a second movable driving member, the first movable driving member is connected to the first mounting plate, the first mounting plate is provided with the first heating claw, the third heating claw and the first cooling claw, the second movable driving member is connected to the second mounting plate, the second mounting plate is provided with the second heating claw, the fourth heating claw and the second cooling claw.

3. The flexible packaging bag spout heat sealing mechanism according to claim 2, characterized in that: The driving assembly includes a third mounting plate and a fourth mounting plate, the first movable driving member is arranged on the third mounting plate, the first mounting plate is provided with a first guide column, and the first guide column can be slidably inserted into the third mounting plate, the second movable driving member is arranged on the fourth mounting plate, the second mounting plate is provided with a second guide column, and the second guide column can be slidably inserted into the fourth mounting plate.

4. The flexible packaging bag spout heat sealing mechanism according to claim 2, characterized in that: The first heating claw and / or the second heating claw may be retractable.

5. The flexible packaging bag spout heat sealing mechanism according to claim 2, characterized in that: The first cooling claw and / or the second cooling claw may be telescopically arranged.

6. The flexible packaging bag spout heat sealing mechanism according to claim 1, characterized in that: The first heating claw and the second heating claw, the third heating claw and the fourth heating claw, and the first cooling claw and the second cooling claw are clamped together to form a diamond shape.

7. The flexible packaging bag spout heat sealing mechanism according to claim 2, characterized in that: The first heating claw and the second heating claw, the third heating claw and the fourth heating claw, and the first cooling claw and the second cooling claw are detachably connected to the first mounting plate and the second mounting plate corresponding thereto.

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