A tightening packaging mechanism, a packaging bag tightening packaging method and a capping machine

Abstract

The present invention discloses a tensioning and packaging mechanism comprising a first folding component, a second folding component, a clamping component, and a third folding component. The first folding component is movable horizontally and vertically, and has a folding pressure piece arranged in a vertical direction and having a width matching the width of the packaging bag to compress the connection between the sealing portion and the packaging portion of the packaging bag. The second folding component is movable horizontally and has a telescopic pusher to push against the sealing portion of the folded packaging bag. The clamping component is movable horizontally and vertically to clamp the sealing portion of the packaging bag. The third folding component is arranged on the clamping component so that while the clamping component tightens the sealing portion of the folded packaging bag, the third folding component compresses the sealing portion of the packaging bag to adhere it to the glued portion of the packaging portion. The present invention also discloses a capping machine and a method for tensioning and packaging packaging bags. The present invention makes packaging more compact, and the packaged packaging bag will not bend.

Description

Technical Field

[0001] The present invention relates to the technical field of capping machines, and in particular to a tensioning and packaging mechanism, a packaging bag tensioning and packaging method, and a capping machine. Background Art

[0002] In the prior art, the easy-open lid and the can body are usually produced separately and then assembled together to form the easy-open can. Therefore, when the easy-open lid is produced, it is usually round and needs to be packaged and transported, that is, multiple easy-open lids are put into a round cylindrical paper bag and then folded and sealed.

[0003] When folding and sealing, glue is usually applied on the outer surface of the paper bag near the sealing part. After the easy-open cover is put into the paper bag, the easy-open cover is pushed into the paper bag and the push head of the easy-open cover is withdrawn. Then the clamping mechanism clamps the sealing part of the paper bag without the easy-open cover and folds it to the glued part of the packaging part to stick it to the packaging part. The packaging part is packed with the easy-open cover, and the paper bag after packaging is cylindrical. Its defects are: the packaging is not compact and the paper bag after packaging is easy to bend; at the same time, the folded part is relatively messy, which affects the appearance. Summary of the Invention

[0004] The present invention aims to at least partially address one of the technical problems of the aforementioned technologies. To this end, one object of the present invention is to provide a tightening packaging mechanism that, through the cooperation of a first folding member, a second folding member, a third folding member, and a clamping member, achieves a more compact packaging structure, preventing the packaged bag from bending after packaging; and, at the same time, the folded and turned portions are more neat and aesthetically pleasing.

[0005] The second object of the present invention is to provide a capping machine.

[0006] The third object of the present invention is to provide a method for tightening and packaging a packaging bag.

[0007] To achieve the above objectives, a first embodiment of the present invention provides a tensioning and packaging mechanism, comprising:

[0008] a first folding member, which is movable horizontally and vertically and has a folding pressing piece arranged in the vertical direction and having a width matching the width of the packaging bag, so as to press the connection between the sealing portion and the packaging portion of the packaging bag;

[0009] a second folding member, the second folding member being horizontally movable and having a telescopic pushing member for pushing the sealing portion of the foldable packaging bag;

[0010] A clamping member, wherein the clamping member is movable horizontally and vertically to clamp the sealing portion of the packaging bag;

[0011] The third folding component is arranged on the clamping component so that when the clamping component tightens the sealing part of the folded packaging bag, the third folding component squeezes the sealing part of the packaging bag to make it adhere to the glued part of the packaging part.

[0012] According to a tensioning and packaging mechanism according to an embodiment of the present invention, when a packaging bag is folded and sealed, the folding pressing piece of the first folding component presses downward in the vertical direction, squeezing the connection between the sealing portion and the packaging portion of the packaging bag to form a preliminary crease; the telescopic pushing member of the second folding component pushes the sealing portion of the folded packaging bag, causing the sealing portion to fold relative to the packaging portion; the clamping component clamps the sealing portion of the packaging bag, moves and tightens the sealing portion, and folds it above the packaging portion; the third folding component moves downward in the vertical direction along with the clamping component, squeezing the sealing portion of the packaging bag so that it adheres to the glued portion of the packaging portion, completing the sealing and folding. Because the third folding component squeezes the sealing portion of the packaging bag so that it adheres to the glued portion of the packaging portion while the clamping component tightens the sealing portion of the folded packaging bag, the packaging is more compact and the packaged bag will not bend after packaging.

[0013] Therefore, the present invention makes the packaging more compact by cooperating with the first folding component, the second folding component, the third folding component and the clamping component, and the packaging bag will not bend after packaging.

[0014] In addition, the tensioning and packaging mechanism proposed in the above embodiment of the present invention may also have the following additional technical features:

[0015] Optionally, an insert angle component is further included, which can be horizontally moved and includes a first insert plate and a second insert plate that are relatively arranged, and the first insert plate and the second insert plate are arranged to move toward each other.

[0016] The first plug plate is inserted into one side of the connection between the sealing part and the packaging part of the packaging bag, and the second plug plate is inserted into the other side of the connection between the sealing part and the packaging part of the packaging bag. The first plug plate and the second plug plate position the connection between the sealing part and the packaging part of the packaging bag from both sides, so that the folded part is more neat and beautiful.

[0017] Specifically, the insertion ends of the first plug-in board and the second plug-in board are chamfered so that the insertion ends are formed into pointed portions.

[0018] Specifically, the gusseted component is arranged adjacent to the second folding component, so that when the gusseted component is positioned at the connection between the sealing portion and the packaging portion of the packaging bag, the telescopic pushing member of the second folding component pushes the sealing portion of the folded packaging bag.

[0019] Optionally, it also includes an air suction pusher head, which can be horizontally moved to push the packaged product to the packaging part of the packaging bag. The air suction pusher head is provided with a negative pressure suction hole. When it is pulled out to the sealing part of the packaging bag, the air suction pusher head absorbs the folds on both sides of the sealing part of the packaging bag and maintains the inward folds.

[0020] Optionally, a pressure rod is provided at the lower end of the folding pressing plate of the first folding component; the upper end of the folding pressing plate is connected to a mounting plate connected to a lifting component, and the lifting component is mounted on the horizontal moving component.

[0021] Optionally, the telescopic pushing member of the second folding component is arranged obliquely along the pushing direction.

[0022] Specifically, the telescopic ejecting member includes a telescopic cylinder and an ejecting rod, and the ejecting rod is arranged at the telescopic movable end of the telescopic cylinder.

[0023] Optionally, the clamping component is a clamping cylinder, and the third folding component is a pressing plate whose shape matches the outer surface of the packaging portion of the packaging bag.

[0024] Specifically, the pressing plate is an arc-shaped pressing plate.

[0025] To achieve the above-mentioned object, a second embodiment of the present invention provides a capping machine, comprising the above-mentioned tensioning and packaging mechanism.

[0026] According to a capping machine according to an embodiment of the present invention, when a packaging bag is folded and sealed, the folding pressing piece of the first folding component presses downward in the vertical direction, squeezing the connection between the sealing portion and the packaging portion of the packaging bag to form a preliminary crease; the telescopic pushing member of the second folding component pushes the sealing portion of the folded packaging bag, causing the sealing portion to fold relative to the packaging portion; the clamping component clamps the sealing portion of the packaging bag, moves and tightens the sealing portion, and folds it above the packaging portion; the third folding component moves downward in the vertical direction along with the clamping component, squeezing the sealing portion of the packaging bag so that it adheres to the glued portion of the packaging portion, completing the sealing and folding. Because the third folding component squeezes the sealing portion of the packaging bag so that it adheres to the glued portion of the packaging portion while the clamping component tightens the sealing portion of the folded packaging bag, the packaging is more compact and the packaged packaging bag will not bend.

[0027] To achieve the above-mentioned object, a third embodiment of the present invention provides a method for tightening and packaging a packaging bag, comprising the following steps:

[0028] First, the folding pressing piece of the first folding member presses downward in the vertical direction to squeeze the connection between the sealing portion and the packaging portion of the packaging bag to form a preliminary fold;

[0029] Second, the telescopic pushing member of the second folding component pushes the sealing portion of the foldable packaging bag so that the sealing portion is folded relative to the packaging portion;

[0030] Third, the clamping component clamps the sealing part of the packaging bag, moves and tightens the sealing part and folds it above the packaging part; the third folding component moves downward in the vertical direction along with the clamping component, and the third folding component squeezes the sealing part of the packaging bag so that it adheres to the glued part of the packaging part, completing the sealing folding.

[0031] According to a packaging bag tightening and packaging method according to an embodiment of the present invention, since the third folding component squeezes the sealing part of the packaging bag to make it adhere to the glue-coated part of the packaging part while the clamping component tightens the sealing part of the folded packaging bag, the packaging is more compact and the packaging bag will not bend after packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural schematic diagram of a tensioning and packaging mechanism according to an embodiment of the present invention;

[0033] Figure 2 A side view of a tensioning and packaging mechanism according to an embodiment of the present invention;

[0034] Figure 3 2. A schematic diagram of the back structure of a tensioning packaging mechanism according to an embodiment of the present invention;

[0035] Figure 3a is a partial enlarged view of the third folding component according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the side structure of a tensioning and packaging mechanism according to an embodiment of the present invention;

[0037] Figure 5 is a schematic structural diagram of a second folding component according to an embodiment of the present invention;

[0038] Figure 6 Schematic diagram of the structure of an air suction pusher head according to an embodiment of the present invention;

[0039] Figure 7 The figure is a schematic diagram of the steps of a packaging bag tightening and packaging method according to an embodiment of the present invention.

[0040] Label Description

[0041] Packaging bag 10

[0042] Sealing unit 101 Packaging unit 102

[0043] First folding component 1 folding pressing sheet 11

[0044] Pressure rod 111 Mounting piece 112

[0045] Second folding member 2 telescopic push member 21

[0046] Telescopic cylinder 211 Push rod 212

[0047] Clamping part 3 Third folding part 4

[0048] Angle component 5 first plug board 51

[0049] Second plugboard 52 lifting component 6

[0050] The suction pusher head 7 has a negative pressure suction hole 71. DETAILED DESCRIPTION

[0051] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0052] In the present invention, the third folding member squeezes the sealing portion of the folded packaging bag while the clamping member tightens the sealing portion, causing it to adhere to the adhesive coating of the packaging portion. This makes the packaging more compact and prevents the packaged bag from bending. Therefore, the present invention achieves a more compact packaging and prevents the packaged bag from bending by cooperating with the first folding member, the second folding member, the third folding member, and the clamping member.

[0053] 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 accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Instead, 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.

[0054] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0055] like Figures 1 to 7 As shown, a tensioning and packaging mechanism according to an embodiment of the present invention includes a first folding component 1 , a second folding component 2 , a clamping component 3 , a third folding component 4 and an inserting component 5 .

[0056] The first folding component 1 can be moved horizontally and vertically, and has a folding pressing piece 11 arranged in the vertical direction and having a width matching the width of the packaging bag 10 to squeeze the connection between the sealing part 101 and the packaging part 102 of the packaging bag 10.

[0057] Optionally, a pressure rod 111 is provided at the lower end of the folding pressing plate 11 of the first folding component 1; the upper end of the folding pressing plate 11 is connected to a mounting plate 112 connected to the lifting component 6, and the lifting component 6 is installed on a horizontal moving component (not shown in the figure).

[0058] The angle insert 5 can be horizontally moved and includes a first insert plate 51 and a second insert plate 52 arranged opposite to each other. The first insert plate 51 and the second insert plate 52 are respectively arranged on a telescopic moving mechanism.

[0059] The first plug plate 51 is inserted into one side of the connection between the sealing part 101 and the packaging part 102 of the packaging bag 10, and the second plug plate 52 is inserted into the other side of the connection between the sealing part 101 and the packaging part 102 of the packaging bag 10. The first plug plate 51 and the second plug plate 52 position the connection between the sealing part 101 and the packaging part 102 of the packaging bag 10 from both sides, so that the folded part is more neat and beautiful.

[0060] Specifically, the insertion ends of the first inserting plate 51 and the second inserting plate 52 are chamfered to form a pointed end. The gusseted member 5 is positioned adjacent to the second folding member 2 so that when the gusseted member 5 is positioned at the connection between the sealing portion 101 and the packaging portion 102 of the packaging bag 10, the retractable pusher 21 of the second folding member 2 pushes against the sealing portion 101 of the folded packaging bag 10.

[0061] The second folding member 2 is horizontally movable and includes a telescopic ejection member 21 for ejecting the sealing portion 101 of the foldable packaging bag 10. Optionally, the telescopic ejection member 21 of the second folding member 2 is tilted in the ejection direction. Specifically, the telescopic ejection member 21 includes a telescopic cylinder 211 and an ejection rod 212, which is disposed at the telescopic end of the telescopic cylinder 211.

[0062] The clamping member 3 can be moved horizontally and vertically to clamp the sealing portion 101 of the packaging bag 10. Optionally, the clamping member 3 is a clamping claw cylinder.

[0063] The third folding member 4 is disposed on the clamping member 3 so that while the clamping member 3 tightens the sealing portion 101 of the folded packaging bag 10, the third folding member 4 presses the sealing portion 101 of the packaging bag 10 to adhere it to the glued portion of the packaging portion 102. Optionally, the third folding member 4 is a pressing plate whose shape matches the outer surface of the packaging portion 102 of the packaging bag 10. Specifically, the pressing plate is an arc-shaped pressing plate.

[0064] Optionally, it also includes an air suction pusher head 7, which can be horizontally moved to push the packaged product to the packaging part 102 of the packaging bag 10. The air suction pusher head 7 is provided with a negative pressure suction hole 71. When it is pulled out to the sealing part 101 of the packaging bag 10, the air suction pusher head 7 absorbs the folds on both sides of the sealing part 101 of the packaging bag 10 and folds them inward and maintains the inward folds.

[0065] A tensioning and packaging mechanism according to an embodiment of the present invention is configured such that when a packaging bag 10 is folded and sealed, the folding pressing piece 11 of the first folding component 1 is pressed downward in the vertical direction, squeezing the connection between the sealing portion 101 and the packaging portion 102 of the packaging bag 10 to form a preliminary crease; the telescopic pushing member 21 of the second folding component 2 pushes the sealing portion 101 of the folded packaging bag 10, so that the sealing portion 101 is folded relative to the packaging portion 102; the clamping component 3 clamps the sealing portion 101 of the packaging bag 10, moves and tightens the sealing portion 101 and folds it above the packaging portion 102; the third folding component 4 moves downward in the vertical direction along with the clamping component 3, and the third folding component 4 squeezes the sealing portion 101 of the packaging bag 10 so that it adheres to the glue-coated portion of the packaging portion 102, completing the sealing and folding. Because the third folding component 4 squeezes the sealing portion 101 of the packaging bag 10 so that it adheres to the glued portion of the packaging portion 102 while the clamping component 3 tightens the sealing portion 101 of the folded packaging bag 10, the packaging is more compact and the packaging bag 10 will not bend after packaging.

[0066] like Figures 1 to 7 As shown, a capping machine according to an embodiment of the present invention includes a tensioning and packaging mechanism.

[0067] The tightening and packaging mechanism includes a first folding component 1, a second folding component 2, a clamping component 3 and a third folding component 4; the first folding component 1 can be moved horizontally and vertically, and has a folding pressing plate 11 arranged in the vertical direction and with a width matching the width of the packaging bag 10 to squeeze the connection between the sealing part 101 and the packaging part 102 of the packaging bag 10; the second folding component 2 can be moved horizontally, and has a telescopic pushing member 21 to push the sealing part 101 of the folded packaging bag 10; the clamping component 3 can be moved horizontally and vertically to clamp the sealing part 101 of the packaging bag 10; the third folding component 4 is arranged on the clamping component 3, so that when the clamping component 3 tightens the sealing part 101 of the folded packaging bag 10, the third folding component 4 squeezes the sealing part 101 of the packaging bag 10 so that it adheres to the glue-coated part of the packaging part 102.

[0068] In a capping machine according to an embodiment of the present invention, when a packaging bag 10 is folded and sealed, the folding pressing piece 11 of the first folding component 1 is pressed downward in the vertical direction, squeezing the connection between the sealing part 101 and the packaging part 102 of the packaging bag 10 to form a preliminary crease; the telescopic pushing member 21 of the second folding component 2 pushes the sealing part 101 of the folded packaging bag 10, so that the sealing part 101 is folded relative to the packaging part 102; the clamping component 3 clamps the sealing part 101 of the packaging bag 10, moves and tightens the sealing part 101 and folds it above the packaging part 102; the third folding component 4 moves downward in the vertical direction with the clamping component 3, and the third folding component 4 squeezes the sealing part 101 of the packaging bag 10 so that it adheres to the glue-coated part of the packaging part 102, completing the sealing and folding. Because the third folding component 4 squeezes the sealing portion 101 of the packaging bag 10 so that it adheres to the glued portion of the packaging portion 102 while the clamping component 3 tightens the sealing portion 101 of the folded packaging bag 10, the packaging is more compact and the packaging bag 10 will not bend after packaging.

[0069] like Figures 1 to 7 As shown, a method for tightening and packaging a packaging bag 10 according to an embodiment of the present invention includes the following steps:

[0070] First, the folding pressing piece 11 of the first folding component 1 is pressed downward in the vertical direction to squeeze the connection between the sealing portion 101 and the packaging portion 102 of the packaging bag 10 to form a preliminary fold.

[0071] Second, the first plug plate 51 is inserted into one side of the connection between the sealing part 101 and the packaging part 102 of the packaging bag 10, and the second plug plate 52 is inserted into the other side of the connection between the sealing part 101 and the packaging part 102 of the packaging bag 10. The first plug plate 51 and the second plug plate 52 position the connection between the sealing part 101 and the packaging part 102 of the packaging bag 10 from both sides.

[0072] Third, the telescopic pushing member 21 of the second folding component 2 pushes the sealing portion 101 of the foldable packaging bag 10 , so that the sealing portion 101 is folded relative to the packaging portion 102 .

[0073] Fourth, the clamping component 3 clamps the sealing part 101 of the packaging bag 10, moves and tightens the sealing part 101 and folds it above the packaging part 102; the third folding component 4 moves downward in the vertical direction along with the clamping component 3, and the third folding component 4 squeezes the sealing part 101 of the packaging bag 10 so that it adheres to the glued part of the packaging part 102, completing the sealing folding.

[0074] In an embodiment of the present invention, a method for tightening and packaging a packaging bag 10 is provided. Since the third folding component 4 squeezes the sealing portion 101 of the packaging bag 10 while the clamping component 3 tightens the sealing portion 101 of the folded packaging bag 10, it adheres the sealing portion 101 to the glue-coated portion of the packaging portion 102, making the packaging more compact and preventing the packaging bag 10 from bending after packaging.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 understood as limiting the present invention.

[0076] 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 the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0077] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0078] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0079] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions 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 any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0080] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A tensioning packaging mechanism, characterized in that: include: a first folding member, which is movable horizontally and vertically and has a folding pressing piece arranged in the vertical direction and having a width matching the width of the packaging bag, so as to press the connection between the sealing portion and the packaging portion of the packaging bag; a second folding member, the second folding member being horizontally movable and having a telescopic pushing member for pushing the sealing portion of the foldable packaging bag; A clamping member, wherein the clamping member is movable horizontally and vertically to clamp the sealing portion of the packaging bag; a third folding member, the third folding member being arranged on the clamping member so that when the clamping member tightens the sealing portion of the folded packaging bag, the third folding member squeezes the sealing portion of the packaging bag to make it adhere to the glued portion of the packaging portion; It also includes an air suction pusher head, which can be horizontally moved to push the packaged product to the packaging part of the packaging bag. The air suction pusher head is provided with a negative pressure suction hole. When it is pulled out to the sealing part of the packaging bag, the air suction pusher head absorbs the folds on both sides of the sealing part of the packaging bag and keeps the folds inward.

2. A tensioning packaging mechanism according to claim 1, characterized in that: The invention also includes an insert angle component, which can be horizontally moved and includes a first insert plate and a second insert plate that are oppositely arranged, and the first insert plate and the second insert plate are arranged to move toward each other.

3. A tensioning packaging mechanism according to claim 2, characterized in that: Insertion ends of the first inserting plate and the second inserting plate are chamfered so that the insertion ends are formed into pointed portions.

4. A tensioning packaging mechanism according to claim 3, characterized in that: The gusseted component is arranged adjacent to the second folding component, so that when the gusseted component is positioned at the connection between the sealing portion and the packaging portion of the packaging bag, the telescopic pushing member of the second folding component pushes the sealing portion of the folded packaging bag.

5. The tension packaging mechanism according to claim 1, characterized in that: A pressure rod is provided at the lower end of the folding pressing piece of the first folding component; the upper end of the folding pressing piece is connected to a mounting piece connected to a lifting component, and the lifting component is mounted on the horizontal moving component.

6. The tension packaging mechanism according to claim 1, characterized in that: The telescopic pushing member of the second folding component is arranged obliquely along the pushing direction.

7. The tension packaging mechanism according to claim 1, characterized in that: The clamping component is a clamping claw cylinder, and the third folding component is a pressing plate whose shape matches the outer surface of the packaging part of the packaging bag.

8. A capping machine, characterized in that: It comprises the tensioning packaging mechanism according to any one of claims 1 to 7.

9. A packaging bag tightening packaging method, characterized in that: The following steps are involved: First, the folding pressing piece of the first folding member presses downward in the vertical direction to squeeze the connection between the sealing portion and the packaging portion of the packaging bag to form a preliminary fold; Second, the telescopic pushing member of the second folding component pushes the sealing portion of the foldable packaging bag so that the sealing portion is folded relative to the packaging portion; Third, the clamping component clamps the sealing portion of the packaging bag, moves and tightens the sealing portion and folds it above the packaging portion; The third folding component moves downward along the vertical direction along with the clamping component, and the third folding component squeezes the sealing portion of the packaging bag to make it adhere to the glue-coated portion of the packaging portion, thereby completing the sealing and folding.

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