Spot-welding connection structure of side plate of original tobacco leaf box

Abstract

The utility model discloses a kind of original tobacco leaf box side plate spot welding connection structure, including positive enclosure and side enclosure, and the inner connecting plate is provided in the connecting position of positive enclosure and side enclosure, the inner side of positive enclosure is provided with the welding area matched with inner connecting plate, and rotating area is provided between inner connecting plate and side enclosure, rotating area extends along the height direction of side enclosure, and the outer side of positive enclosure is heat-pressed to form spot welding groove to inner connecting plate position. With the following effects, compared with traditional positive heat-pressing, the depth of spot welding groove is deeper, so that the multiple spot welding grooves uniformly distributed in height direction make the connection between positive enclosure and inner connecting plate more firm. However, the surface formed by spot welding groove can cause scratching, and the flatness of the surface of the box is improved by the arc-shaped transition area and the plunger piece.

Description

Technical Field

[0001] This utility model relates to the field of hollow board side plate welding, and in particular to a spot welding connection structure for the side plate of a former tobacco box. Background Technology

[0002] Raw tobacco leaf boxes are crucial packaging devices for ensuring the storage and transportation of tobacco, and have a significant impact on the tobacco industry. Currently, the tobacco industry is an important part of my country's economy, and tobacco transportation has high environmental requirements. The final quality of tobacco is easily affected by factors such as humidity and temperature. Therefore, boxes made of hollow boards are used to address these issues during the tobacco handling process.

[0003] In the prior art, the inventor disclosed a hollow board box in patent application number "202420313253.3", which disclosed the connection position of the side panel of the original tobacco box. Figure 4 The splicing and welding method shown in Figure 7 achieves a seamless connection, but the connection is not very strong. The following provides a spot welding structure for plastic hollow boards that is more robust, while avoiding the problem of the original tobacco boxes scraping against each other at the spot welding points during turnover. Utility Model Content

[0004] The purpose of this utility model is to provide a spot-welded connection structure for the side plate of the original tobacco box, which has the advantages of a solid structure and reduced scratches at the welding position.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a spot-welded connection structure for the side panels of a tobacco box, comprising a front panel and a side panel, wherein an inner connecting plate is provided at the connection position of the front panel and the side panel, a welding area that mates with the inner connecting plate is provided on the inner side of the front panel, a rotating area is provided between the inner connecting plate and the side panel, the rotating area extends along the height direction of the side panel, a spot weld groove is formed by hot pressing on the outer side of the front panel toward the inner connecting plate, the spot weld groove penetrates the thickness direction of the front panel into the inner connecting plate, the spot weld groove forms a hot-pressing deformation area on the surface of the inner connecting plate, the surface of the hot-pressing deformation area is lower than the outer surface of the inner connecting plate, the center of the hot-pressing deformation area protrudes outward to form a deformation protrusion, the outer contour of the spot weld groove forms an arc-shaped transition area on the outer surface of the front panel, and the spot weld groove is evenly distributed along the height direction of the front panel.

[0006] Preferably, a plunger is provided in the spot welding groove. The plunger includes an end and a connecting part. One side of the end protrudes from the surface of the front enclosure plate. The inner side of the end is connected to the connecting part. An arc-shaped rounded corner is provided at the position where the end and the connecting part are connected. The outer side of the connecting part abuts against the inner wall of the spot welding groove.

[0007] By adopting the above technical solution, the spot welding groove is sealed, and it also serves as an identification mark during tobacco transportation. The rounded corners and the arc transition area are compatible.

[0008] Preferably, the bottom of the connecting part is provided with a hollow groove that cooperates with the deformation protrusion. The hollow groove is recessed inward along the axial direction of the connecting part, and a guide angle is provided at the connection position between the bottom and the side of the connecting part.

[0009] By adopting the above technical solution, the hollow groove avoids interference from deformation protrusions, and the guide angle facilitates the installation of the plunger component.

[0010] Preferably, the side of the connecting part is provided with an annular groove, the annular groove is provided around the side of the connecting part, and the annular groove is evenly distributed along the axial direction of the connecting part.

[0011] By adopting the above technical solution, the fixing effect of the plunger component's connecting part between the inner wall of the spot weld groove is improved, enabling it to adapt to the irregular inner surface of the spot weld groove, improving the connection effect and preventing loosening.

[0012] Preferably, the outer side of the end is provided with a cross groove, an arc-shaped protrusion, or a friction pad, and the cross groove extends into the hollow groove.

[0013] By adopting the above technical solution, the installation and removal of the plunger component are facilitated, while the front of the housing is marked.

[0014] Preferably, the cross-sectional shape of the spot welding groove is rectangular or circular, and the cross-sectional shape of the end and the connection part is rectangular or circular.

[0015] By adopting the above technical solution, hot pressing molding is facilitated.

[0016] Preferably, the front panel, side panels, and inner panel are integrally formed by die-cutting of a hollow plastic sheet. The inner side of the front panel and the outer side of the inner panel are welded together to form a welding surface. The spot weld groove is provided through the welding surface. The hot-pressing deformation zone is located at 1 / 3 of the thickness of the inner panel.

[0017] By adopting the above technical solutions, the connection strength is improved.

[0018] Preferably, the thickness of the inner plate or the main enclosure plate at the welding surface is one-third to one-half of the thickness of the main enclosure plate.

[0019] By adopting the above technical solution, the thickness in this area can be avoided, which would affect normal use.

[0020] Preferably, the cross-sectional shape of the deformation protrusion is cross-shaped, rectangular, or circular, and the deformation protrusion is formed by hot pressing the hollow plate towards the hot-pressing deformation zone.

[0021] By adopting the above technical solution, situations such as glue overflow or incomplete hot pressing on the periphery can be avoided.

[0022] Preferably, the hollow plastic plate is provided with partitions, which are evenly distributed along the height direction, and cavities are formed between adjacent partitions. A through area is formed between the side of the spot welding groove and the cavity.

[0023] By adopting the above technical solution, the penetration zone is formed due to the uncontrollable deformation of the material under thermal pressure, and the plunger plays a role in sealing the penetration zone to a certain extent.

[0024] In summary, compared to traditional front hot pressing, the spot weld structure has a deeper spot weld groove. Therefore, the multi-segment spot weld groove, which is evenly distributed in the height direction, makes the connection between the front panel and the inner panel more secure. However, the surface formed by the spot weld groove can cause scratches. The arc transition area and plunger component improve the flatness of the box surface. The deformation protrusion allows the spot weld groove to connect further downwards, and the excess material is gathered in the middle position to avoid overflowing around the perimeter, thus reducing the deformation and burning of the spot weld groove. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of Example 1;

[0026] Figure 2 yes Figure 1 An enlarged schematic diagram of part A is shown below;

[0027] Figure 3 This is a cross-sectional schematic diagram of Example 1;

[0028] Figure 4 This is a schematic diagram of the plunger component in Example 1. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of the plunger component in Example 1. Figure 2 ;

[0030] Figure 6 This is a structural schematic diagram of Example 2;

[0031] In the diagram, 11. Front panel; 12. Side panel; 13. Inner panel; 14. Welding area; 15. Rotation area; 16. Partition; 17. Cavity; 18. Through area; 2. Spot weld groove; 21. Hot-pressing deformation area; 22. Deformation protrusion; 23. Arc transition area; 3. Plunger component; 31. End; 32. Friction pad; 33. Cross groove; 34. Connecting part; 35. Arc rounded corner; 36. Hollow groove; 37. Guide angle; 38. Annular groove. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0034] Example 1:

[0035] like Figures 1 to 5 As shown, a spot-welded connection structure for the side panels of a tobacco box includes a front panel 11 and a side panel 12. In Embodiments 1 and 2, the front panel 11, side panel 12, and inner connecting plate 13 are integrally die-cut from PP hollow plastic sheets. Partitions 16 are provided inside the hollow plastic sheets, and the partitions 16 are evenly distributed along the height direction, forming cavities 17 between adjacent partitions 16. Both the front panel 11 and the side panel 12 consist of two pieces. The front panel 11 is located on the long side of the box, and the side panel 12 is located on the short side of the box. An inner connecting plate 13 is provided at the connection point between the front panel 11 and the side panel 12, serving to connect the front panel 11 and the side panel. The function of 12 is that the inner side of the main enclosure 11 is provided with a welding area 14 that cooperates with the inner connecting plate 13. A rotation area 15 is provided between the inner connecting plate 13 and the side enclosure 12. The thickness of the rotation area 15 is less than the thickness of the side enclosure 12. The rotation area 15 extends along the height direction of the side enclosure 12, so that the side enclosure 12 and the main enclosure 11 are at a right angle at this position. The outer side of the main enclosure 11 is hot-pressed to form a spot weld groove 2 at the position of the inner connecting plate 13. The spot weld groove 2 penetrates the thickness direction of the main enclosure 11 into the inner connecting plate 13. In order to improve the welding and fixing effect between the main enclosure 11 and the side enclosure 12, the spot weld groove 2 is evenly distributed along the height direction of the main enclosure 11.

[0036] like Figure 2 As shown, the spot welding groove 2 forms a hot-pressing deformation zone 21 on the surface of the inner plate 13. That is, the hot-pressing deformation zone 21 is formed on the surface of the inner plate 13 during the downward hot pressing process of the hot pressing die. At the same time, the outer surface of the hot-pressing deformation zone 21 is the outer surface of the front enclosure plate 11 formed by inward hot pressing. The hot-pressing deformation zone 21 forms an arc-shaped transition zone 23 on the outside of the spot welding groove 2 through the hot pressing die. The arc-shaped transition zone 23 facilitates the demolding of the hot pressing die and reduces wear caused by contact between the boxes, thereby reducing the scraping between the spot welding groove 2 and the adjacent enclosure plate. The surface of the hot-pressing deformation zone 21 is lower than the outer surface of the inner plate 13, ensuring the connection between the inner plate 13 and the front enclosure plate 11.

[0037] like Figure 2As shown, the cross-sectional shape of the spot weld groove 2 is circular, which is compatible with the shape of the hot press die head. At the same time, it is located on the side of the box body, which facilitates the identification of boxes from the same batch. In addition, in both Embodiment 1 and Embodiment 2, in order to further improve the sealing and connection effect, the inner side of the front enclosure plate 11 and the outer side of the inner connection plate 13 are welded together to form a welding surface. The spot weld groove 2 is set through the welding surface. The hot press deformation zone 21 is located at 1 / 3 of the thickness of the inner connection plate 13. At the same time, the thickness of the inner connection plate 13 or the front enclosure plate 11 at the welding surface position is one-third to one-half of the thickness of the front enclosure plate 11, reducing the overall thickness at the welding position.

[0038] like Figure 2 and Figure 3 As shown, in order to reduce the inability to penetrate the center of the hot-pressing deformation zone 21 during hot pressing, or to avoid glue overflow on the side, the center of the hot-pressing deformation zone 21 protrudes outward to form a deformation protrusion 22. The deformation protrusion 22 has various structures for identification. The deformation protrusion 22 is formed by hot pressing the hollow plate towards the hot-pressing deformation zone 21. The cross-sectional shape of the deformation protrusion 22 is cross-shaped, rectangular, or circular. In Example 1, the cross-sectional shape of the deformation protrusion 22 is cross-shaped.

[0039] like Figures 3 to 5 As shown, to prevent the spot welding groove 2 from being exposed and to prevent liquid leakage, a plunger 3 made of injection molding is provided inside the spot welding groove 2. The plunger 3 includes an end 31 and a connecting part 34. One side of the end 31 protrudes from the surface of the main enclosure 11, and the inner side of the end 31 is connected to the connecting part 34. An arc-shaped fillet 35 is provided at the position where the end 31 and the connecting part 34 are connected to mate with an arc-shaped transition area 23. The outer side of the connecting part 34 abuts against the inner wall of the spot welding groove 2. To prevent the bottom of the connecting part 34 from interfering with the deformation protrusion 22, The bottom of the connecting part 34 is provided with a hollow groove 36 that mates with the deformation protrusion 22. The hollow groove 36 is recessed inward along the axial direction of the connecting part 34. In order to facilitate the insertion of the plunger 3, a guide angle 37 is provided at the bottom and side connection position of the connecting part 34. At the same time, in order to increase the connection effect of the plunger 3, an annular groove 38 is provided on the side of the connecting part 34. The annular groove 38 is arranged around the side of the connecting part 34 and is evenly distributed along the axial direction of the connecting part 34, which serves to fix it to the inner wall of the non-smooth spot welding groove 2.

[0040] like Figure 3 As shown, a cross groove 33 or a friction pad 32 is provided on the outer side of the end 31 of the plunger 3, and the cross groove 33 extends into the hollow groove 36.

[0041] During use, the cross groove 33 facilitates the removal of the plunger 3, and the friction pad 32 reduces friction between the housings.

[0042] Example 2:

[0043] like Figure 6 As shown, the difference between Embodiment 2 and Embodiment 1 is that in Embodiment 2, the cross-sectional shape of the spot welding groove 2 is rectangular, and the cross-sectional shape of the end 31 and the connecting part 34 is adapted to the shape of the spot welding groove 2 in a rectangular shape. The deformation protrusion 22 at the bottom of the spot welding groove 2 is arc-shaped, and the hot-pressed through area 18 is formed between the side of the spot welding groove 2 and the cavity 17.

Claims

1. A spot-welded connection structure for the side panels of a tobacco box, comprising a front panel (11) and side panels (12), characterized in that: The front enclosure (11) and the side enclosure (12) are provided with an inner connecting plate (13) at the connection position. The inner side of the front enclosure (11) is provided with a welding area (14) that mates with the inner connecting plate (13). A rotating area (15) is provided between the inner connecting plate (13) and the side enclosure (12). The rotating area (15) extends along the height direction of the side enclosure (12). A spot weld groove (2) is formed by hot pressing on the outer side of the front enclosure (11) towards the inner connecting plate (13). The spot weld groove (2) penetrates the front enclosure. The thickness direction of the plate (11) extends into the inner plate (13). The spot welding groove (2) forms a hot-pressing deformation zone (21) on the surface of the inner plate (13). The surface of the hot-pressing deformation zone (21) is lower than the outer surface of the inner plate (13). The center of the hot-pressing deformation zone (21) protrudes outward to form a deformation protrusion (22). The outer contour of the spot welding groove (2) forms an arc-shaped transition zone (23) on the outer surface of the main enclosure plate (11). The spot welding groove (2) is evenly distributed along the height direction of the main enclosure plate (11).

2. The spot-welded connection structure of the original tobacco box side plate according to claim 1, characterized in that: A plunger (3) is provided in the spot welding groove (2). The plunger (3) includes an end (31) and a connecting part (34). One side of the end (31) protrudes from the surface of the front enclosure (11). The inner side of the end (31) is connected to the connecting part (34). An arc-shaped rounded corner (35) is provided at the position where the end (31) and the connecting part (34) are connected. The outer side of the connecting part (34) abuts against the inner wall of the spot welding groove (2).

3. The spot-welded connection structure of the original tobacco box side plate according to claim 2, characterized in that: The bottom of the connecting part (34) is provided with a hollow groove (36) that cooperates with the deformation protrusion (22). The hollow groove (36) is recessed inward along the axial direction of the connecting part (34). A guide angle (37) is provided at the bottom and side connection position of the connecting part (34).

4. The spot-welded connection structure of the original tobacco box side plate according to claim 3, characterized in that: The side of the connecting part (34) is provided with an annular groove (38), which surrounds the side of the connecting part (34) and is evenly distributed along the axial direction of the connecting part (34).

5. The spot-welded connection structure of the original tobacco box side plate according to claim 3, characterized in that: The outer side of the end (31) is provided with a cross groove (33) or an arc-shaped protrusion or a friction pad (32), and the cross groove (33) extends into the hollow groove (36).

6. The spot-welded connection structure of the original tobacco box side plate according to claim 2, characterized in that: The cross-sectional shape of the spot welding groove (2) is rectangular or circular, and the cross-sectional shape of the end (31) and the connecting part (34) is rectangular or circular.

7. The spot-welded connection structure of the original tobacco box side plate according to claim 1, characterized in that: The front panel (11), side panel (12) and inner panel (13) are integrally formed by die-cutting of plastic hollow board. The spot welding groove (2) is set through the welding area (14). The hot-pressing deformation area (21) is located at 1 / 3 of the thickness of the inner panel (13).

8. The spot-welded connection structure of the original tobacco box side plate according to claim 7, characterized in that: The thickness of the inner plate (13) or the main enclosure plate (11) at the welding surface is one-third to one-half the thickness of the main enclosure plate (11).

9. The spot-welded connection structure of the original tobacco box side plate according to claim 7, characterized in that: The cross-sectional shape of the deformation protrusion (22) is cross-shaped, rectangular or circular, and the deformation protrusion (22) is formed by hot pressing the hollow plate towards the hot-pressing deformation zone (21).

10. The spot-welded connection structure of the original tobacco box side plate according to claim 7, characterized in that: The hollow plastic plate is provided with partitions (16), which are evenly distributed along the height direction. A cavity (17) is formed between adjacent partitions (16), and a through area (18) is formed between the side of the spot welding groove (2) and the cavity (17).

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