Small box transparent paper end face heat sealing iron and transparent paper packaging machine

CN224929358UActive Publication Date: 2026-11-03HUBEI CHINA TOBACCO INDUSTRY CO LTD
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Patent Information

Application Number
CN202522677141.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-17
Publication Date
2026-11-03
Estimated Expiration
2035-12-17

AI Technical Summary

Technical Problem

现有技术中,矩形电烙铁在热封透明塑料纸时,由于卷烟小盒的外侧面存在弯曲变形,导致热封不牢,气密防护性差,容易出现卷烟烟支变质的问题。

Method used

A heat-sealing soldering iron is used on the end face of the small transparent paper box. A conical structure is designed, including a first sealing frame, a second sealing frame, and a sealing face frame. The sealing face frame, the first sealing frame, and the sealing face frame of the conical structure form a seamless labyrinth heat seal with the heat-sealing end face of the cigarette box, ensuring a tight fit and reducing heat loss.

Benefits of technology

This technology enables efficient heat sealing of the transparent paper, ensuring the airtight protection of the cigarette pack, preventing cigarette deterioration, and improving heat sealing efficiency and quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to cigarette packaging technical field discloses a kind of small box transparent paper end face heat-sealing branding iron and transparent paper packaging machine.The small box transparent paper end face heat-sealing branding iron includes branding iron main body and protruding body;Protruding body includes first sealed square frame, second sealed square frame and sealing face frame, second sealed square frame is connected between first sealed square frame and sealing face frame with interval, the frame length of first sealed square frame is greater than the frame length of second sealed square frame, the frame length of second sealed square frame is greater than the outer edge frame length of sealing face frame, to form conical structure, sealing face frame is located at the top of conical structure, first sealed square frame is located at the bottom of conical structure and is connected to the outside of branding iron main body, and first sealed square frame, second sealed square frame and sealing face frame abut transparent paper and heat-sealing end face, can carry out seamless labyrinth heat-sealing to transparent paper, guarantee the airtight protection of cigarette small box, can guarantee the heat-sealing heat of transparent paper sufficient simultaneously, improve the heat-sealing efficiency and heat-sealing quality of transparent paper.
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Description

Technical Field

[0001] This utility model relates to the field of cigarette packaging technology, and in particular to a heat-sealing iron for the end face of a small box of transparent paper and a transparent paper packaging machine. Background Technology

[0002] In the process of packaging small cigarette packs, the cigarette sticks are first placed into the cigarette box, then a layer of transparent plastic film is wrapped around the outside of the cigarette box, and the transparent plastic film is heat-sealed on the outside of the cigarette box to form the required small cigarette pack.

[0003] Currently, rectangular soldering irons are commonly used to heat-seal the seams of transparent plastic sheets. However, because the heat-sealing working surface of the rectangular soldering iron is flat—meaning the contact surface between the heat-sealing working surface and the transparent plastic sheet and cigarette pack is also flat—and because cigarette packs are usually made of cardboard, the outer surface of the cigarette pack (which contacts the heat-sealing working surface) is somewhat curved and not a straight plane. Therefore, when the heat-sealing working surface heats and seals the seams of the transparent plastic sheet on the outside of the cigarette pack, the seams are prone to not being sealed firmly. This results in poor airtight protection of the transparent plastic sheet for the cigarette pack inside, leading to the problem of cigarette deterioration during long-term storage. Utility Model Content

[0004] The purpose of this utility model is to provide a heat-sealing iron for the end face of a small box of transparent paper and a transparent paper packaging machine, which can perform seamless labyrinth heat sealing on the transparent paper, ensuring the airtight protection of the transparent paper to the cigarette box inside, while ensuring sufficient heat for the protrusions to heat-seal the transparent paper, thereby improving the heat sealing efficiency and quality of the transparent paper.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A heat-sealing iron is used to heat-seal the end face of a small transparent paper box. The outer side of the cigarette box is covered with transparent paper, and the seam of the transparent paper is located at the heat-sealing end face of the cigarette box, including:

[0007] Soldering iron body;

[0008] The protrusion includes a first sealing frame, a second sealing frame, and a sealing face frame. The second sealing frame is spaced between the first sealing frame and the sealing face frame. The frame length of the first sealing frame is greater than the frame length of the second sealing frame, and the frame length of the second sealing frame is greater than the outer edge frame length of the sealing face frame, forming a cone structure. The sealing face frame is located at the apex of the cone structure, and the first sealing frame is located at the base of the cone structure and connected to the outer side of the soldering iron body. The first sealing frame, the second sealing frame, and the sealing face frame abut against the transparent paper and the heat-sealing end face to heat-seal the seam of the transparent paper.

[0009] Optionally, the first sealing frame includes four first frame strips that are sequentially connected. The four first frame strips are used to abut against the transparent paper and the heat-sealing end face. The sum of the lengths of the four first frame strips is the frame length of the first sealing frame.

[0010] Optionally, the outer side of the soldering iron body is connected to a square cone frame, the square cone frame having four chamfered bevels connected in sequence, the four first frame strips being respectively connected to the four chamfered bevels, and the size of the chamfered bevels gradually decreasing towards the first frame strips.

[0011] Optionally, the second sealing frame includes four sequentially connected second frame strips, which abut against the transparent paper and the heat-sealed end face, and the sum of the lengths of the four second frame strips is the frame length of the second sealing frame.

[0012] Optionally, the sealing frame includes a rectangular plate for abutting against the transparent paper and the heat-sealing end face, and the sum of the lengths of the four outer sides of the rectangular plate is the outer edge length of the sealing frame.

[0013] Optionally, the protrusion further includes:

[0014] The first connecting rib is connected to the middle of the second frame strip at its middle part. The opposite ends of the first connecting rib are respectively connected to the middle of the first outer side of the rectangular plate and the middle of the first frame strip. The first connecting rib abuts against the transparent paper and the heat-sealed end face, and multiple first connecting ribs are provided.

[0015] Optionally, the protrusion further includes:

[0016] The second connecting rib has its two ends connected to the middle of the second outer side of the rectangular plate and the middle of the second frame strip, respectively. The second connecting rib abuts against the transparent paper and the heat-sealed end face, and multiple second connecting ribs are provided.

[0017] Optionally, the protrusion further includes:

[0018] The third connecting rib is connected in the middle to the transition between two adjacent second frame strips. One end of the third connecting rib is connected to the corner of the rectangular plate, and the other end of the third connecting rib is connected to the transition between two adjacent first frame strips. The third connecting rib abuts against the transparent paper and the heat-sealed end face.

[0019] Optionally, the rectangular plate is connected to the third connecting rib at each of its four corners.

[0020] A transparent paper packaging machine, including the heat-sealing iron for the end face of the transparent paper of the small box as described above.

[0021] The beneficial effects of this utility model are:

[0022] The heat-sealing soldering iron for the transparent paper end face of the cigarette box in this utility model features a cooperating soldering iron body and a protrusion. The protrusion includes a first sealing frame, a second sealing frame, and a sealing face frame, which are connected at intervals to form a cone structure. The sealing face frame is located at the apex of the cone structure, and the first sealing frame is located at the base of the cone structure and connected to the outer side of the soldering iron body. When it is necessary to heat-seal the seam of the transparent paper, the first sealing frame, the second sealing frame, and the sealing face frame abut against the heat-sealing end face and the transparent paper to heat-seal the seam. On the one hand, by having the first sealing frame, the second sealing frame, and the sealing face frame, which form a cone structure, abut against the concave heat-sealing end face of the cigarette box in a layered and gradient manner (no longer using a single plane), it is possible to ensure that the first sealing frame, the second sealing frame, and the sealing face frame are all tightly fitted against the concave heat-sealing end face (transparent paper), avoiding the situation where the entire heat-sealing working surface cannot completely fit the concave end face of the transparent paper in existing methods. The concave heat-sealing end face eliminates the false heat-sealing phenomenon, achieving a seamless labyrinthine heat seal of the first sealing frame, second sealing frame, and sealing face frame of the transparent paper. This ensures the heat-sealing effect and the airtight protection of the transparent paper for the cigarette box inside, thus preventing cigarette deterioration during long-term storage. Furthermore, by improving the existing full-surface contact of the heat-sealing working surface to line contact of the first sealing frame, second sealing frame, and sealing face frame, during high-speed continuous operation, it avoids the heat-sealing end face from carrying away a large amount of heat due to excessive contact area. This ensures that the heat-sealing end face does not carry away a large amount of heat from the raised parts, reducing heat loss and ensuring sufficient heat for the raised parts. This guarantees the heat-sealing efficiency and quality of the transparent paper, effectively improving the overall heat-sealing performance of the heat-sealing iron on the transparent paper end face of the cigarette box.

[0023] The transparent paper packaging machine of this utility model includes the aforementioned heat-sealing iron for the end face of the small transparent paper box. This iron performs a labyrinthine heat seal on the seams of the transparent paper on the outside of the cigarette box, ensuring the heat-sealing effect and efficiency of the transparent paper. This, in turn, ensures the airtight protection of the cigarette box and, consequently, the quality of the cigarettes packaged inside the cigarette box during long-term storage. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the heat-sealing soldering iron for the end face of the transparent paper of the small box provided in this embodiment of the utility model (the shaded parts in the figure are all raised parts that abut against the transparent paper and the heat-sealing end face);

[0025] Figure 2 This is a schematic diagram of the structure of a cigarette box (covered with transparent paper on the outside, and the transparent paper is not heat-sealed) provided in an embodiment of this utility model.

[0026] In the picture:

[0027] 1- Cigarette pack; 11- Heat-sealed end face;

[0028] 2- Soldering iron body; 21- Outer surface;

[0029] 3-Protrusion; 31-First sealing frame; 311-First frame strip; 32-Second sealing frame; 321-Second frame strip; 33-Sealing face frame; 331-First outer edge; 332-Second outer edge; 34-First connecting rib; 35-Second connecting rib; 36-Third connecting rib;

[0030] 4-Square cone frame; 41-Chamfered bevel;

[0031] 5 - Transparent paper; 51 - Seam. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts 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.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In the description of this utility model, unless otherwise expressly 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] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] This embodiment provides a heat-sealing soldering iron for the end face of a small box of transparent paper and a transparent paper packaging machine including the heat-sealing soldering iron for the end face of the small box of transparent paper; such as Figure 1 and Figure 2 As shown, a transparent paper 5 covers the outside of the cigarette box 1. The seam 51 of the transparent paper 5 corresponds to the heat-sealing end face 11 of the cigarette box 1. The seam 51 of the transparent paper 5 is heat-sealed using a heat-sealing iron on the end face of the transparent paper, ensuring the heat-sealing effect of the seam 51. This ensures the airtight protection of the cigarette box 1 by the transparent paper 5, thus preventing the cigarettes inside the cigarette box 1 from deteriorating during long-term storage. At the same time, it ensures that the heat-sealing of the transparent paper 5 can be completed in a short time (with sufficient heat), improving the heat-sealing efficiency of the transparent paper 5. The transparent paper 5 is a transparent plastic paper commonly used in cigarette box packaging in the prior art.

[0037] Specifically, such as Figure 1 and Figure 2As shown, the heat-sealing soldering iron for the transparent paper end face of the small box includes a soldering iron body 2 and a protrusion 3; wherein, the protrusion 3 includes a first sealing frame 31, a second sealing frame 32 and a sealing face frame 33, the second sealing frame 32 is spaced between the first sealing frame 31 and the sealing face frame 33, the frame length of the first sealing frame 31 is greater than the frame length of the second sealing frame 32, the frame length of the second sealing frame 32 is greater than the outer edge frame length of the sealing face frame 33, so as to form a cone structure (similar to a pyramid structure), the sealing face frame 33 is located at the cone top of the cone structure, the first sealing frame 31 is located at the cone bottom of the cone structure and is connected to the outer side 21 of the soldering iron body 2, and the first sealing frame 31, the second sealing frame 32 and the sealing face frame 33 abut against the transparent paper 5 and the heat-sealing end face 11 to heat seal the seam 51 of the transparent paper 5.

[0038] Compared with the prior art, the heat-sealing soldering iron for the transparent paper end face of the cigarette box 1 in this embodiment changes the specific contact structure and contact method with the heat-sealing end face 11 and the transparent paper 5 of the cigarette box 1. It sets up a cooperating soldering iron body 2 and a protrusion 3, and the protrusion 3 includes a first sealing frame 31, a second sealing frame 32, and a sealing face frame 33 connected at intervals to form a cone structure. The sealing face frame 33 is located at the apex of the cone structure, and the first sealing frame 31 is located at the bottom of the cone structure and connected to the outer side 21 of the soldering iron body 2. When heat sealing of the transparent paper is required... When the seam 51 of the transparent paper 5 is sealed, the first sealing frame 31, the second sealing frame 32, and the sealing face frame 33 abut against the heat-sealing end face 11 and the transparent paper 5 to heat seal the seam 51 of the transparent paper 5. On the one hand, by making the first sealing frame 31, the second sealing frame 32, and the sealing face frame 33, which have a conical structure, abut against the concave heat-sealing end face 11 of the cigarette box 1 in a layered and gradient manner (no longer using a whole plane), it can be ensured that the first sealing frame 31, the second sealing frame 32, and the sealing face frame 33 are all in contact with the concave heat-sealing end face 11 (transparent paper). The paper 5) is tightly bonded together, avoiding the false heat sealing phenomenon caused by the inability of the entire heat-sealing working surface to fully adhere to the concave heat-sealing end face 11 in the middle. This achieves a seamless labyrinthine heat seal of the first sealing frame 31, the second sealing frame 32, and the sealing face frame 33 of the transparent paper 5, ensuring the heat sealing effect and the airtight protection of the transparent paper 5 to the cigarette box 1 inside. This ensures that the cigarettes will not deteriorate during long-term storage. On the other hand, by improving the existing full-surface contact of the heat-sealing working surface to the first sealing frame 31, The line contact between the second sealing frame 32 and the sealing face frame 33 during high-speed continuous operation can prevent the existing heat-sealing working surface and the heat-sealing end face 11 from carrying away a large amount of heat-sealing heat due to excessive contact area. This ensures that the heat-sealing end face 11 does not carry away a large amount of heat-sealing heat from the protrusion 3, reducing heat loss and ensuring sufficient heat-sealing heat for the protrusion 3. This, in turn, ensures the heat-sealing efficiency and quality of the transparent paper 5, effectively improving the heat-sealing performance of the entire small box transparent paper end face heat-sealing soldering iron.

[0039] Specifically, such as Figure 1 As shown, the soldering iron body 2 has a square base structure. The soldering iron body 2 can provide the required heat for heat sealing to the protrusion 3, so as to ensure that the first sealing frame 31, the second sealing frame 32 and the sealing face frame 33 in the protrusion 3 abut against and heat seal the seam 51 of the transparent paper 5. The soldering iron body 2 can adopt a common soldering iron structure in the prior art.

[0040] Furthermore, such as Figure 1As shown, the first sealing frame 31 includes four first frame strips 311 that are connected in sequence. The four first frame strips 311 are used to abut against the transparent paper 5 and the heat-sealing end face 11. The sum of the lengths of the four first frame strips 311 is the frame length of the first sealing frame 31. That is, the four first frame strips 311 can abut against the heat-sealing end face 11 of the cigarette box 1 respectively, so as to reduce the contact heat conduction area between the first sealing frame 31 and the heat-sealing end face 11 while ensuring a completely tight fit.

[0041] Specifically, such as Figure 1 As shown, a square cone frame 4 is connected to the outer side 21 of the soldering iron body 2. The square cone frame 4 has four chamfered bevels 41 connected in sequence. The four first frame strips 311 are respectively connected to the four chamfered bevels 41, and the size of the chamfered bevels 41 gradually decreases in the direction closer to the first frame strips 311. On the one hand, the square cone frame 4 can achieve a smooth transition connection between the first frame strips 311 and the soldering iron body 2. On the other hand, it can avoid interference from the soldering iron body 2 affecting the contact and adhesion between the first frame strips 311 and the heat-sealed end face 11.

[0042] Furthermore, such as Figure 1 As shown, the second sealing frame 32 includes four second frame strips 321 that are sequentially connected. The four second frame strips 321 are used to abut against the transparent paper 5 and the heat-sealing end face 11. The sum of the lengths of the four second frame strips 321 is the frame length of the second sealing frame 32. That is, the four second frame strips 321 can abut against the heat-sealing end face 11 of the cigarette box 1 respectively, so as to reduce the contact heat conduction area between the second sealing frame 32 and the heat-sealing end face 11 while ensuring a completely tight fit.

[0043] Specifically, such as Figure 1 As shown, the sealing frame 33 includes a rectangular plate, which is used to abut against the transparent paper 5 and the heat-sealing end face 11. The sum of the lengths of the four outer sides of the rectangular plate is the outer edge length of the sealing frame 33. This ensures the stability and reliability of the abutment between the protrusion 3 and the cigarette box 1 through the abutment between the rectangular plate and the heat-sealing end face 11 of the cigarette box 1, thereby improving the subsequent heat-sealing effect.

[0044] Furthermore, such as Figure 1As shown, the protrusion 3 also includes a first connecting rib 34. The middle part of the first connecting rib 34 is connected to the middle part of the second frame strip 321. The two opposite ends of the first connecting rib 34 are respectively connected to the middle part of the first outer edge 331 of the rectangular plate and the middle part of the first frame strip 311. The first connecting rib 34 abuts against the transparent paper 5 and the heat-sealing end face 11. On the one hand, it can ensure the connection stability between the first sealing frame 31, the second sealing frame 32 and the sealing face frame 33. On the other hand, it enables the first connecting rib 34 to connect with the first sealing frame 31, the second sealing frame 32 and the sealing face frame 33 to form a more maze-like abutment heat-sealing structure, so as to better ensure the heat-sealing effect on the transparent paper 5 and prevent the heat loss of heat sealing through the heat-sealing end face 11.

[0045] Specifically, such as Figure 1 As shown, multiple first connecting ribs 34 are provided to further ensure the heat-sealing effect (tighter adhesion) of the transparent paper 5. In this embodiment, two first connecting ribs 34 are provided, and the two first connecting ribs 34 are respectively connected to the middle of the two opposite first outer edges 331 of the rectangular plate.

[0046] Furthermore, such as Figure 1 As shown, the protrusion 3 also includes a second connecting rib 35. The two ends of the second connecting rib 35 are respectively connected to the middle of the second outer edge 332 of the rectangular plate and the middle of the second frame strip 321. The second outer edge 332 is adjacent to the first outer edge 331, and the second connecting rib 35 abuts against the transparent paper 5 and the heat-sealing end face 11. On the one hand, it can better ensure the connection stability between the first sealing frame 31, the second sealing frame 32 and the sealing face frame 33. On the other hand, it enables the second connecting rib 35 to connect with the first sealing frame 31, the second sealing frame 32 and the sealing face frame 33 to form a more maze-like abutment heat-sealing structure, further ensuring the heat-sealing effect on the transparent paper 5, while preventing the heat from being lost through the heat-sealing end face 11.

[0047] Specifically, such as Figure 1 As shown, multiple second connecting ribs 35 are provided to better ensure the heat sealing effect (closer adhesion) of the transparent paper 5. In this embodiment, two second connecting ribs 35 are provided, and the two second connecting ribs 35 are respectively connected to the middle of the two opposite second outer edges 332 of the rectangular plate.

[0048] Furthermore, such as Figure 1As shown, the protrusion 3 also includes a third connecting rib 36. The middle part of the third connecting rib 36 is connected to the transition between two adjacent second frame strips 321. One end of the third connecting rib 36 is connected to the corner of the rectangular plate (the connection position between the first outer edge 331 and the first outer edge 331). The other end of the third connecting rib 36 is connected to the transition between two adjacent first frame strips 311. The third connecting rib 36 abuts against the transparent paper 5 and the heat-sealing end face 11. On the one hand, it can further ensure the connection stability between the first sealing frame 31, the second sealing frame 32 and the sealing face frame 33. On the other hand, it enables the third connecting rib 36 to connect with the first sealing frame 31, the second sealing frame 32 and the sealing face frame 33 to form a more maze-like abutment heat-sealing structure, so as to better ensure the heat-sealing effect on the transparent paper 5 without losing heat-sealing heat through the heat-sealing end face 11.

[0049] Specifically, such as Figure 1 As shown, the four corners of the rectangular plate (the connection positions between the first outer edge 331 and the first outer edge 331) are all connected with third connecting ribs 36, so as to further ensure the heat sealing effect of the transparent paper 5 (the fit is tighter); and the third connecting ribs 36 located at the four corners of the rectangular plate can more evenly ensure the connection stability between the first sealing frame 31, the second sealing frame 32 and the sealing face frame 33, and can ensure the uniform heat sealing effect of the transparent paper 5.

[0050] In this embodiment, the small box with transparent paper end face heat sealing soldering iron, such as Figure 1 and Figure 2 As shown, the first sealing frame 31 (four first frame strips 311), the second sealing frame 32 (four second frame strips 321), the sealing face frame 33 (rectangular plate), the two first connecting ribs 34, the two second connecting ribs 35, and the four third connecting ribs 36, which are raised, respectively abut against the concave heat-sealing end face 11 in the middle of the cigarette box 1. That is, the labyrinth heat-sealing method of line contact between the heat-sealing end face 11 of the cigarette box 1 and the transparent paper 5 can ensure a tight fit between the raised body 3 and the cigarette box 1, effectively solving the problem of poor airtight protection of the transparent paper 5 to the cigarette box 1 inside, which leads to the deterioration of the cigarettes during long-term storage; at the same time, it reduces the loss of heat during heat sealing and improves the heat-sealing efficiency of the transparent paper 5.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A heat-sealing iron for the end face of a small transparent paper box, wherein the outer side of a cigarette box (1) is covered with transparent paper (5), and the seam (51) of the transparent paper (5) is located at the heat-sealed end face (11) of the cigarette box (1), characterized in that, include: Soldering iron body (2); The protrusion (3) includes a first sealing frame (31), a second sealing frame (32), and a sealing face frame (33). The second sealing frame (32) is spaced between the first sealing frame (31) and the sealing face frame (33). The frame length of the first sealing frame (31) is greater than the frame length of the second sealing frame (32). The frame length of the second sealing frame (32) is greater than the outer edge frame length of the sealing face frame (33) to form a cone structure. The sealing face frame (33) is located at the cone apex of the cone structure. The first sealing frame (31) is located at the cone bottom of the cone structure and is connected to the outer side (21) of the soldering iron body (2). The first sealing frame (31), the second sealing frame (32), and the sealing face frame (33) abut against the transparent paper (5) and the heat-sealing end face (11) to heat-seal the seam (51) of the transparent paper (5).

2. The heat-sealing soldering iron for the end face of the transparent paper of the small box according to claim 1, characterized in that, The first sealing frame (31) includes four first frame strips (311) that are connected in sequence. The four first frame strips (311) are used to abut against the transparent paper (5) and the heat-sealed end face (11). The sum of the lengths of the four first frame strips (311) is the frame length of the first sealing frame (31).

3. The heat-sealing soldering iron for the end face of the transparent paper of the small box according to claim 2, characterized in that, The outer side (21) of the soldering iron body (2) is connected to a square cone frame (4). The square cone frame (4) has four chamfered bevels (41) that are connected in sequence. The four first frame strips (311) are respectively connected to the four chamfered bevels (41), and the size of the chamfered bevels (41) gradually decreases in the direction closer to the first frame strips (311).

4. The heat-sealing soldering iron for the end face of the transparent paper of the small box according to claim 2 or 3, characterized in that, The second sealing frame (32) includes four second frame strips (321) that are connected in sequence. The four second frame strips (321) are used to abut against the transparent paper (5) and the heat-sealed end face (11). The sum of the lengths of the four second frame strips (321) is the frame length of the second sealing frame (32).

5. The heat-sealing soldering iron for the end face of the transparent paper of the small box according to claim 4, characterized in that, The sealing frame (33) includes a rectangular plate, which is used to abut against the transparent paper (5) and the heat-sealing end face (11). The sum of the lengths of the four outer sides of the rectangular plate is the outer edge length of the sealing frame (33).

6. The heat-sealing soldering iron for the end face of the transparent paper of the small box according to claim 5, characterized in that, The protrusion (3) also includes: The first connecting rib (34) is connected to the middle of the second frame strip (321) at its middle part. The two opposite ends of the first connecting rib (34) are respectively connected to the middle of the first outer edge (331) of the rectangular plate and the middle of the first frame strip (311). The first connecting rib (34) abuts against the transparent paper (5) and the heat-sealed end face (11). The first connecting rib (34) is provided in multiple forms.

7. The heat-sealing soldering iron for the end face of the transparent paper of the small box according to claim 5, characterized in that, The protrusion (3) also includes: The second connecting rib (35) has two opposite ends connected to the middle of the second outer side (332) of the rectangular plate and the middle of the second frame strip (321), respectively. The second connecting rib (35) abuts against the transparent paper (5) and the heat-sealed end face (11), and there are multiple second connecting ribs (35).

8. The heat-sealing soldering iron for the end face of the transparent paper of the small box according to claim 5, characterized in that, The protrusion (3) also includes: The third connecting rib (36) is connected in the middle to the junction between two adjacent second frame strips (321), one end of the third connecting rib (36) is connected to the corner of the rectangular plate, and the other end of the third connecting rib (36) is connected to the junction between two adjacent first frame strips (311), and the third connecting rib (36) abuts against the transparent paper (5) and the heat-sealed end face (11).

9. The heat-sealing soldering iron for the end face of the transparent paper of the small box according to claim 8, characterized in that, The rectangular plate is connected to the third connecting rib (36) at each of its four corners.

10. A transparent paper packaging machine, characterized in that, The small box transparent paper end heat sealing soldering iron includes any one of claims 1-9.