Packaging bag heat sealing device

Abstract

The utility model provides a packaging bag heat sealing device. The packaging bag heat sealing device comprises a conveying assembly and a heat sealing assembly. The conveying assembly is suitable for conveying packaging bags to be subjected to heat sealing. The heat sealing assembly is provided with a pair of adsorption pieces capable of being opened and closed and a pair of heat sealing pieces capable of being synchronously opened and closed along with the adsorption pieces, the clamping centers of the adsorption pieces and the heat sealing pieces are located on the same horizontal line, the adsorption pieces are elastically arranged in a telescopic mode, and the ends of the adsorption pieces protrude out of the ends of the heat sealing pieces. When the adsorption part is changed from the open state to the closed state, the adsorption part adsorbs firstly and then clamps the bag opening of the packaging bag so as to shape and position the bag opening of the packaging bag, along with further clamping of the adsorption part, the adsorption part elastically deforms, the heat sealing part clamps the positioned packaging bag, and the bag opening of the packaging bag is sealed. And the packaging bag is subjected to heat sealing operation. The heat sealing device for the packaging bag is simple in structure, capable of preventing the packaging bag from being scalded and good in heat sealing effect.

Description

Technical Field

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

[0002] With the progress of technology, more and more packaging is completed by automated equipment. During the packaging process of automated packaging equipment, the bag mouth of the packaging bag needs to be heat-sealed.

[0003] In related technologies, the upper sealing member and the lower sealing member of the heat-sealing machine device are used to clamp and heat-seal the bag mouth of the packaging bag. However, due to the relatively soft texture of the film, it is difficult for the packaging bag to be in the central position during the heat-sealing operation, resulting in the upper sealing member and the lower sealing member being unable to contact the packaging bag simultaneously to heat the packaging bag, thus leading to poor heat-sealing effect or scalding of the packaging bag. Therefore, it is necessary to improve the heat-sealing device for packaging bags. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the above technologies to some extent. For this purpose, the purpose of the utility model is to provide a heat-sealing device for packaging bags, which has a simple structure, can prevent the packaging bag from being scalded, and has a good heat-sealing effect.

[0005] To achieve the above purpose, the utility model provides a heat-sealing device for packaging bags, which includes: a conveying component and a heat-sealing component;

[0006] The conveying component is adapted to convey the packaging bag to be heat-sealed;

[0007] The heat-sealing component has a pair of openable and closable suction members and a pair of heat-sealing members that can synchronously open and close 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 can be elastically telescoped, 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 adsorb and then clamp the bag mouth of the packaging bag to shape and position the bag mouth of the packaging bag. As the suction members are further clamped, the suction members undergo elastic deformation, and the heat-sealing members clamp the positioned packaging bag to perform heat-sealing operation on the packaging bag.

[0008] A heat-sealing device for packaging bags according to an embodiment of the present utility model, through the synchronous clamping actions of the adsorbing member and the heat-sealing member of the heat-sealing assembly, and the adsorbing member can adsorb and elastically clamp the bag mouth of the packaging bag prior to the heat-sealing member, so that the bag mouth of the packaging bag is shaped and positioned at the clamping center of the heat-sealing member, facilitating the heat-sealing member to keep the adsorbing member in a clamped state and undergo elastic deformation during the process of clamping the packaging bag, thereby facilitating the heat-sealing member to synchronously contact the two outer surfaces of the packaging bag and clamp, enabling the packaging bag to be uniformly heated for heat-sealing operation. This heat-sealing device for packaging bags has a simple structure, can prevent the packaging bag from being scalded, and has a good heat-sealing effect.

[0009] In addition, a heat-sealing device for packaging bags proposed according to the above embodiment of the present utility model may further have the following additional technical features:

[0010] Optionally, the heat-sealing assembly includes a driving member and two movable mounting plates, and one adsorbing member and one heat-sealing member are provided on each of the two mounting plates, and the driving member is connected to the two mounting plates to drive the two mounting plates to open and close synchronously, so that the adsorbing member and the heat-sealing member open and close synchronously.

[0011] Further, the driving member includes a rotating shaft, a connecting plate, a first connecting rod, a second connecting rod and a slide rail, the two mounting plates are movably arranged on the slide rail, two ends of the first connecting rod are respectively hinged to the connecting plate and one mounting plate, two ends of the second connecting rod are respectively hinged to the connecting plate and the other mounting plate, and the rotating shaft is connected to the connecting plate to drive the connecting plate to rotate.

[0012] Optionally, the conveying assembly includes a conveyor belt and a first adjusting member, the conveyor belt is adapted to convey the packaging bags to be heat-sealed, and the first adjusting member is connected to the conveyor belt to adjust the height of the conveyor belt.

[0013] Further, the conveying assembly includes an abutting member, the abutting member is telescopically arranged above the conveyor belt to abut against the packaging bag on the conveyor belt, so that the packaging bag is fixed at the position to be heat-sealed.

[0014] Further, the conveying assembly further includes a second adjusting member, and the second adjusting member is connected to the abutting member to adjust the horizontal position of the abutting member relative to the conveyor belt.

[0015] Optionally, the ends of the two adsorbing members are provided with guiding structures that are engaged with each other in a concave-convex manner.

[0016] Further, the guiding structure is a V-shaped convex strip and a V-shaped groove that are engaged with each other.

[0017] Further, the heat-sealing assembly further includes a cutting knife movably disposed on the mounting plate to cut off the redundant part of the bag mouth of the heat-sealed packaging bag. Description of the Drawings

[0018] Figure 1 FIG. 1 is a schematic view of a packaging bag heat-sealing device according to an embodiment of the present invention;

[0019] Figure 2 FIG. Figure 1 is an enlarged view of part A in FIG.

[0020] Figure 3 FIG. Figure 1 is a schematic structural view from another perspective;

[0021] Description of the Reference Numerals:

[0022] Conveyor assembly 1, conveyor belt 11, first adjusting member 12, abutting member 13, second adjusting member 14, heat-sealing assembly 2, adsorbing member 21, V-shaped rib 211, V-shaped groove 212, heat-sealing member 22, driving member 23, rotating shaft 231, connecting plate 232, first connecting rod 233, second connecting rod 234, slide rail 235, mounting plate 24, cutting knife 25. Detailed Embodiment

[0023] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the 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 drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0024] In order to better understand the above technical solution, the exemplary embodiments of the present invention will be described in more detail below with reference to the drawings. Although the 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 by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be completely conveyed to those skilled in the art.

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below in combination with the accompanying drawings of the specification and the specific embodiments.

[0026] The following refers to Figures 1-3 to describe in detail the implementation of the packaging bag heat-sealing device according to the embodiments of the present invention.

[0027] The packaging bag heat-sealing device according to the embodiments of the present invention includes: a conveyor assembly 1 and a heat-sealing assembly 2.

[0028] Specifically, the conveying component 1 is adapted to convey the packaging bag to be heat-sealed; the heat-sealing component 2 has a pair of openable and closable suction members 21 and a pair of heat-sealing members 22 that can synchronously open and close following the suction members 21. The clamping centers of the suction members 21 and the heat-sealing members 22 are on the same horizontal line. The suction members 21 are elastically telescopic, and the ends of the suction members 21 protrude from the ends of the heat-sealing members 22. When the suction members 21 move from the open state to the closed state, the suction members 21 first adsorb and then clamp the mouth of the packaging bag to shape and position the mouth of the packaging bag. As the suction members 21 are further clamped, the suction members 21 undergo elastic deformation, and the heat-sealing members 22 clamp the positioned packaging bag to perform the heat-sealing operation on the packaging bag.

[0029] That is to say, in the previous process, the product is loaded into the packaging bag and conveyed by the conveying component 1 to the position to be heat-sealed. Since the ends of the suction members 21 protrude more than the ends of the heat-sealing members 22, during the synchronous clamping process, the suction members 21 can first approach the packaging bag and adsorb the mouth of the bag on the suction members 21 through the adsorption force, so that the mouth of the packaging bag can fit flatly on the suction members 21. As the adsorbent further approaches the mouth of the packaging bag, the mouth of the packaging bag is clamped and fixed by the suction members 21. Since the suction members 21 are elastically telescopic, the suction members 21 can be further clamped and elastically contracted, facilitating the heat-sealing members 22 to clamp the heat-sealing position of the packaging bag. Since the clamping centers of the suction members 21 and the heat-sealing members 22 are on the same horizontal line, the two heat-sealing members 22 can synchronously contact the two outer surfaces of the packaging bag, so that the packaging bag is uniformly heated and the heat-sealing effect is ensured.

[0030] Thus, through the synchronous clamping action of the suction members 21 and the heat-sealing members 22 of the heat-sealing component 2, and the suction members 21 can first adsorb and elastically clamp the mouth of the packaging bag prior to the heat-sealing members 22, the mouth of the packaging bag is shaped and positioned at the clamping center of the heat-sealing members 22, facilitating the heat-sealing members 22 to keep the suction members 21 in the clamped state and undergo elastic deformation during the process of clamping the packaging bag, so that the heat-sealing members 22 can synchronously contact the two outer surfaces of the packaging bag and clamp, enabling the packaging bag to be uniformly heated for the heat-sealing operation. The packaging bag heat-sealing device has a simple structure, can prevent the packaging bag from being scalded, and has a good heat-sealing effect.

[0031] For the installation and driving of the adsorbing member 21 and the heat-sealing member 22, the heat-sealing assembly 2 includes a driving member 23 and two movable mounting plates 24. An adsorbing member 21 and a heat-sealing member 22 are provided on each of the two mounting plates 24. The driving member 23 is connected to the two mounting plates 24 to drive the two mounting plates 24 to open and close synchronously, so that the adsorbing member 21 and the heat-sealing member 22 open and close synchronously. It can be understood that through the arrangement of the mounting plate 24, the installation of the adsorbing member 21 and the heat-sealing member 22 can be facilitated, so that the adsorbing member 21 and the heat-sealing member 22 on the same side form an integrally movable unit. By driving the two mounting plates 24 to approach or separate from each other by the driving member 23, the adsorbing member 21 and the heat-sealing member 22 can perform the opening and closing actions, thereby facilitating the shaping, positioning and heat-sealing operations of the packaging bag. Among them, the heat-sealing member 22 can be composed of a heating rod and a heat-conducting metal member, and the heating rod is arranged inside the heat-conducting metal member; the elastic telescopic function of the adsorbing member 21 can be realized by a spring in cooperation with a sliding rod and a sliding sleeve.

[0032] For the driving member 23, the driving member 23 includes a rotating shaft 231, a connecting plate 232, a first connecting rod 233, a second connecting rod 234 and a slide rail 235. The two mounting plates 24 are movably arranged on the slide rail 235. The two ends of the first connecting rod 233 are respectively hinged to the connecting plate 232 and one mounting plate 24, and the two ends of the second connecting rod 234 are respectively hinged to the connecting plate 232 and the other mounting plate 24. The rotating shaft 231 is connected to the connecting plate 232 to drive the connecting plate 232 to rotate. It can be understood that by driving the rotation of the rotating shaft 231 to drive the rotation of the connecting plate 232, the connecting plate 232 drives the first connecting rod 233 and the second connecting rod 234 to push and pull the two mounting plates 24 synchronously, so that the mounting plates 24 approach or separate from each other relatively, thereby realizing the synchronous opening and closing actions of the adsorbing member 21 and the heat-sealing member 22. Among them, the rotation of the rotating shaft 231 can be driven by a motor, and the mounting plate 24 can be arranged on the slide rail 235 through a slider.

[0033] For the conveying assembly 1, the conveying assembly 1 includes a conveyor belt 11 and a first adjusting member 12. The conveyor belt 11 is suitable for conveying the packaging bag to be heat-sealed, and the first adjusting member 12 is connected to the conveyor belt 11 to adjust the height of the conveyor belt 11. It can be understood that through the conveyor belt 11, the conveying of the packaging bag can be facilitated, and through the arrangement of the first adjusting member 12, the height of the conveyor belt 11 can be adjusted, so as to facilitate the conveying of packaging bags of different specifications to convey the packaging bag to the position where the adsorbing member 21 and the heat-sealing member 22 can be clamped. Among them, the first adjusting member 12 can be an adjusting screw rod with a handle.

[0034] For the fixation of the packaging bag on the conveyor belt 11, the conveying assembly 1 includes an abutting member 13, which is telescopically arranged above the conveyor belt 11 to abut against the packaging bag on the conveyor belt 11, so that the packaging bag is fixed at the position to be heat-sealed. It can be understood that by abutting the abutting member 13 against the packaging bag on the conveyor belt 11, it is convenient to fix the packaging bag on the conveyor belt 11, so that the bag mouth of the packaging bag is in a position where it can be clamped by the adsorbing member 21, avoiding displacement when the adsorbing member 21 and the heat-sealing member 22 clamp the packaging bag, and ensuring the reliability of the heat-sealing operation. Among them, the abutting member 13 can be a U-shaped abutting plate, and the telescopic movement of the abutting member 13 can be realized by connecting with a cylinder.

[0035] For the position adjustment of the abutting member 13, the conveying assembly 1 further includes a second adjusting member 14, and the second adjusting member 14 is connected to the abutting member 13 to adjust the horizontal position of the abutting member 13 relative to the conveyor belt 11. It can be understood that by setting the second adjusting member 14, it is convenient to adjust the horizontal position of the abutting member 13 relative to the conveyor belt 11, so as to facilitate the abutting of packaging bags of different specifications, and make the packaging bag be accurately fixed on the conveyor belt 11. Among them, the second adjusting member 14 can be a structure combining an adjusting screw and a moving pair, and the abutting member 13 is arranged on the slider of the moving pair.

[0036] For the clamping of the adsorbing member 21, the ends of the two adsorbing members 21 are provided with guiding structures that are mutually concave-convexly matched. It can be understood that since the packaging bag is usually thin, by setting the concave-convexly matched guiding structure, it is convenient for the two adsorbing members 21 to be more fitted when clamping, so as to facilitate the stable clamping of the packaging bag, and ensure the reliability of the positioning of the bag mouth of the packaging bag. Among them, the overall ends of the two adsorbing members 21 can be planes, and a plurality of adsorption holes are provided on the planes, and the concave-convexly matched guiding structure is integrally formed on the planes. When the adsorbing members 21 clamp, the bag mouth of the packaging bag can be clamped together at the concave-convexly matched position, which is convenient for the bag mouth of the packaging bag to be more firmly positioned.

[0037] For the guiding structure, the guiding structure is a mutually matched V-shaped rib 211 and V-shaped groove 212. It can be understood that through the cooperation of the V-shaped rib 211 and the V-shaped groove 212, it is convenient for the two adsorbing members 21 to have a self-aligning function when clamping the packaging bag, which can eliminate the fitting gap at the elastic telescopic part of the adsorbing member 21, so that the upper and lower edges of the bag mouth of the packaging bag are aligned, and the upper and lower edges of the bag mouth of the packaging bag can be aligned and fitted when the adsorbing member 21 clamps. For the subsequent heat-sealing operation, the appearance of the formed packaging product is more neat and beautiful.

[0038] For cutting the redundant part of the packaging bag after heat sealing, it further includes a cutting knife 25, which is movably arranged on the mounting plate 24 to cut off the redundant part of the bag mouth of the heat-sealed packaging bag. It can be understood that since the suction attachment 21 needs to occupy a certain area of the packaging bag at the clamped bag mouth, there is a redundant part after heat sealing. By arranging the cutting knife 25, it is convenient to cut off the redundant part after heat sealing, thereby making the appearance of the formed packaging product neater and more beautiful. Among them, the cutting knife 25 can cut while the suction attachment 21 is in the clamped state, which is convenient to ensure the flatness of the cut. The movement of the cutting knife 25 can be through a cylinder cooperating with a moving pair structure.

[0039] In addition, this packaging bag heat-sealing device can also be connected and used with a packaging production line, or it can be used alone.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and 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 should not be construed as a limitation to the present invention.

[0041] 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, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0042] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] 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 additional 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 less than that of the second feature.

[0044] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", 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 representations 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0045] 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 packaging bag heat sealing device, characterized in that: include: Conveying components and heat sealing components; The conveying assembly is suitable for conveying packaging bags to be heat-sealed; The heat sealing assembly comprises a pair of adsorbents that can be opened and closed and a pair of heat sealing members that can be opened and closed synchronously with the adsorbents, the clamping centers of the adsorbents and the heat sealing members are on the same horizontal line, the adsorbents can be elastically extended and retracted, the ends of the adsorbents protrude from the ends of the heat sealing members, when the adsorbents change from an open state to a closed state, the adsorbents first adsorb and then clamp the bag opening of the packaging bag to shape and position the bag opening of the packaging bag, and as the adsorbents are further clamped, the adsorbents undergo elastic deformation, and the heat sealing members clamp the positioned packaging bag to perform a heat-seal operation on the packaging bag.

2. The packaging bag heat sealing device according to claim 1, characterized in that: The heat sealing assembly includes a driving member and two movable mounting plates, each of which is provided with an adsorption member and a heat sealing member. The driving member connects the two mounting plates to drive the two mounting plates to open and close synchronously, thereby causing the adsorption member and the heat sealing member to open and close synchronously.

3. The packaging bag heat sealing device according to claim 2, characterized in that: The driving member includes a rotating shaft, a connecting plate, a first connecting rod, a second connecting rod and a slide rail. The two mounting plates are movably arranged on the slide rail. The two ends of the first connecting rod are hinged to the connecting plate and one mounting plate respectively, and the two ends of the second connecting rod are hinged to the connecting plate and the other mounting plate respectively. The rotating shaft connects the connecting plates to drive the connecting plates to rotate.

4. The packaging bag heat sealing device according to claim 1, characterized in that: The conveying assembly comprises a conveying belt and a first adjusting member, wherein the conveying belt is suitable for conveying packaging bags to be heat-sealed, and the first adjusting member is connected to the conveying belt to adjust the height of the conveying belt.

5. The packaging bag heat sealing device according to claim 4, characterized in that: The conveying assembly comprises a contact piece, and the contact piece is telescopically arranged above the conveying belt to contact the packaging bag on the conveying belt, so that the packaging bag is fixed at a position to be heat-sealed.

6. The packaging bag heat sealing device according to claim 5, characterized in that: The conveying assembly further includes a second adjusting member connected to the abutting member to adjust a horizontal position of the abutting member relative to the conveying belt.

7. The packaging bag heat sealing device according to claim 1, characterized in that: The ends of the two adsorption members are provided with guide structures which are concave-convex matched with each other.

8. The packaging bag heat sealing device according to claim 7, characterized in that: The guide structure is a V-shaped convex strip and a V-shaped groove that match each other.

9. The packaging bag heat sealing device according to claim 2, characterized in that: The heat sealing assembly also includes a cutter, which is movably arranged on the mounting plate to cut off the redundant part of the bag opening of the heat-sealed packaging bag.

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