Original tobacco leaf turnover box arc-shaped edge sealing structure and edge sealing mold

Abstract

The utility model discloses an original tobacco leaf turnover box arc-shaped edge sealing structure and an edge sealing mould, the edge sealing structure comprises a cover plate, the cover plate comprises a top contact surface, a side contact surface and a bottom connecting surface, the bottom of the side contact surface extends to the bottom connecting surface, a hollow groove is arranged in the cover plate, the hollow groove is arranged along the height direction of the cover plate in a penetrating mode, and the bottom of the hollow groove is connected with the top contact surface. The hollow grooves are evenly distributed in the width direction of the cover plate, first arc-shaped faces are arranged at the connecting positions of the hollow grooves and the top contact face, the longitudinal section of each first arc-shaped face is in an arc shape, and second arc-shaped faces and third arc-shaped faces are formed at the connecting positions of the hollow grooves and the side contact faces. And the second arc-shaped surface and the third arc-shaped surface are bent inwards and are symmetrically arranged. The residual edge on the top contact surface of the cover plate is subjected to ultrasonic welding or hot melting to form the first arc-shaped surface, the thickness of the first arc-shaped surface is the same as that of the cover plate, and meanwhile, the first arc-shaped surface is arc-shaped, so that hands can be effectively prevented from being cut by the maximum contact surface.

Description

Technical Field

[0001] The utility model relates to the field of turnover boxes, in particular to an arc-shaped edge sealing structure and an edge sealing mould of an original tobacco turnover box. Background Art

[0002] The raw tobacco turnover box refers to a box used for storing and circulating raw tobacco leaves. PP hollow board has the advantages of being waterproof, moisture-proof, acid- and alkali-resistant, and having a high number of conversion times. Therefore, the raw tobacco distribution boxes made of PP hollow board have been widely adopted by domestic tobacco companies.

[0003] In the domestic prior art, the utility model patent with the authorization announcement number "CN205345582U" discloses a foldable tobacco delivery packaging box, the side panels and cover of the box body are made of PV plastic, and the side panels and cover are formed by die-cutting from the same PP, such as Figure 1 As shown in the figure, the interior of the PP hollow board has hollow grooves evenly distributed in the horizontal direction, and is die-cut in the height direction. Generally, the side walls of the turnover box are made of hollow sheets with a thickness of 2mm to 5mm. The die-cutting position cannot be accurately located as shown in the left wall of the figure, so it will produce Figure 1 The residual edge (burr) with a thickness of 0.1mm to 0.5mm shown on the front or right side wall causes the problem of cutting hands. The prior art, as shown in the background document, adopts integral materials to avoid the residual edge. When hollow panels are used for production, residual edges are inevitable. Therefore, the residual edges are generally not processed, or an outer frame is used to surround the hollow panel, but the cost is high and the overall weight of the box is heavy. Utility Model Content

[0004] The first purpose of the utility model is to provide an arc-shaped edge sealing structure for an original tobacco leaf turnover box, which has the effect of processing residual edges and avoiding cutting hands by the residual edges.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: an arc-shaped edge sealing structure of an original tobacco turnover box, including a cover plate, the cover plate including a top contact surface, a side contact surface and a bottom connecting surface, the side contact surfaces are arranged on both sides of the top contact surface, the bottom connecting surface is connected to the side plate of the box body, the bottom connecting surface is arranged opposite to the top contact surface, the top of the side contact surface extends to the top contact surface, and the bottom of the side contact surface extends to the bottom connecting surface, a hollow groove is arranged in the cover plate, the hollow groove is penetrated along the height direction of the cover plate, and the hollow grooves are evenly distributed along the width direction of the cover plate, a first arc-shaped surface is arranged at the connection position of the hollow groove and the top contact surface, the longitudinal cross-section of the first arc-shaped surface is arc-shaped, and a second arc-shaped surface and a third arc-shaped surface are formed at the connection position of the hollow groove and the side contact surface, and the second arc-shaped surface and the third arc-shaped surface are both bent inwardly and symmetrically arranged.

[0006] Preferably, an arc angle is provided between the top contact surface and the side contact surface, and the first arc surface extends below the arc angle.

[0007] By adopting the above technical solution, the arc angle reduces the sharp angle between the top contact surface and the side contact surface.

[0008] Preferably, the inclination angle of the side contact surface is 2° to 5°.

[0009] By adopting the above technical solution, the scratches between the side surfaces of the cover plate and the adjacent side panels during bending are effectively reduced.

[0010] Preferably, the number of the hollow grooves in the width direction of the side contact surface is 2-5.

[0011] By adopting the above technical solution, it is related to the angle of the side contact surface and the density of the hollow grooves in the hollow plate.

[0012] Preferably, the angle between the second arcuate surface and the third arcuate surface is 60° to 80°.

[0013] By adopting the above technical solution, the second arc surface and the third arc surface are folded inwards to avoid cutting hands.

[0014] Preferably, the thickness of the cover plate is 3 mm to 5 mm, the wall thickness of the adjacent hollow groove is 0.5 mm, and the width of the hollow groove is 1 mm to 2 mm.

[0015] By adopting the above technical solution, that is, a thinner cover plate, the wall thickness of the hollow groove is also uniform and the weight is lighter.

[0016] Preferably, a welding band is formed on the first arc surface in the thickness direction of the cover plate, the welding band protrudes from two sides of the cover plate, and the welding band is arc-shaped.

[0017] By adopting the above technical solution, the welding belt is an extrusion formed on both sides of the cover plate by excessively hot-melting and extruding the top contact surface.

[0018] Preferably, the thickness of the cover plate is 4 mm to 8 mm, the wall thickness of the adjacent hollow groove is 1 mm to 2 mm, and the width of the hollow groove is 2 mm to 4 mm.

[0019] By adopting the above technical solution, the cover plate has a thicker size and a higher structural strength, and the wall thickness of the hollow groove is thicker, which can accommodate a larger load, but the groove width of the hollow groove is larger.

[0020] Preferably, a window is formed on the top of the hollow groove on the first arc-shaped surface, and the aperture of the window is 1 mm to 3 mm.

[0021] By adopting the above technical solution, since the width of the hollow groove is large, even if the welding zone is formed by hot melting, it is inevitable that a position that cannot be covered after hot melting will be formed on the top of the hollow groove, so a window will be formed on the top of the hollow groove.

[0022] The second purpose of the utility model is to provide an edge sealing mold for processing the arc-shaped edge sealing structure of the original tobacco turnover box.

[0023] The above-mentioned technical purpose of the utility model is achieved through the following technical scheme: a side sealing mold for processing the arc-shaped side sealing structure of the original tobacco turnover box, comprising a frame, a bottom plate, a top plate, side sealing rollers, a heating column, a lubricating column and an elastic telescopic shaft, the cover plate is located between the bottom plate and the top plate, the side sealing roller is provided with an arc groove in contact with the top contact surface and the side contact surface, the arc groove is concentrically arranged with the side sealing roller, the side sealing roller, the heating column and the lubricating column are rotatably connected between the bottom plate and the top plate, the heating column and the lubricating column are respectively located on both sides of the side sealing roller, one end of the elastic telescopic shaft is connected to the frame, and the other end of the elastic telescopic shaft is connected to the bottom plate.

[0024] During use, the elastic telescopic shaft is adjusted to move the heated edge banding roller toward the top contact surface to achieve hot melting of the top contact surface to form a first arc surface, while continuing to move downward on the side contact surface to form a second arc surface and a third arc surface on the side contact surface.

[0025] To summarize, the residual edge on the top contact surface of the cover plate is melted by ultrasonic welding or hot melting to form a first arc-shaped surface. The thickness of the first arc-shaped surface is the same as the thickness of the cover plate and is arc-shaped, which can effectively avoid the problem of cutting hands on the largest contact surface and reduce the collision with adjacent or opposite cover plates. At the same time, the residual edge exposed on the side contact surface is hot-melted to form a second arc-shaped surface and a third arc-shaped surface, which increases the thickness of the residual edge and removes burrs, effectively avoiding cutting hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the background technology;

[0027] Figure 2 It is a structural schematic diagram of an embodiment;

[0028] Figure 3 is a cross-sectional schematic diagram of the first curved surface of Example 1;

[0029] Figure 4 is a partial cross-sectional view of the top of the cover plate of Example 1;

[0030] Figure 5 is a cross-sectional schematic diagram of the first curved surface of Example 2;

[0031] Figure 6is a partial cross-sectional view of the top of the cover plate of Example 2;

[0032] Figure 7 is a cross-sectional schematic diagram of the second curved surface and the third curved surface of Example 1;

[0033] Figure 8 is a schematic structural diagram of an edge-sealing roller in Embodiment 3;

[0034] Fig. 9 is a top view of Example 3 after removing the top plate;

[0035] In the figure, 1, cover plate; 11, hollow groove; 12, arc angle; 13, side plate; 2, top contact surface; 21, first arc surface; 22, welding belt; 23, window; 3, side contact surface; 31, second arc surface; 32, third arc surface; 4, bottom connecting surface; 5, frame; 51, bottom plate; 52, top plate; 53, edge sealing roller; 54, heating column; 55, lubrication column; 56, elastic telescopic shaft; 57, arc groove. DETAILED DESCRIPTION

[0036] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0037] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0038] Embodiment 1:

[0039] like Figures 2 to 4 As shown, an arc-shaped edge sealing structure of an original tobacco turnover box includes a cover plate 1. The cover plate 1 is made of a hollow plate, so a hollow groove 11 is arranged in the cover plate 1. The cross-sectional shape of the hollow groove 11 is rectangular. The cover plate 1 includes a top contact surface 2, a side contact surface 3 and a bottom connecting surface 4. The cover plate 1 is trapezoidal as a whole. The side contact surfaces 3 are inclinedly arranged on both sides of the top contact surface 2, and the bottom connecting surface 4 is connected to the top of the side panel 13 of the box body. More specifically, the cover plate 1 and the side panel 13 are formed by integral bending, the bottom connecting surface 4 is arranged opposite to the top contact surface 2, the top of the side contact surface 3 extends to the top contact surface 2, and the bottom of the side contact surface 3 extends to the bottom connecting surface 4.

[0040] The hollow groove 11 has a variety of setting directions. In embodiment 1, a longitudinally arranged hollow groove 11 is adopted, that is, the hollow groove 11 is arranged through the height direction of the cover plate 1, and the hollow grooves 11 are evenly distributed along the width direction of the cover plate 1. A first arcuate surface 21 is arranged at the connection position between the hollow groove 11 and the top contact surface 2. The longitudinal cross-section of the first arcuate surface 21 is arc-shaped. A second arcuate surface 31 and a third arcuate surface 32 are formed at the connection position between the hollow groove 11 and the side contact surface 3. The second arcuate surface 31 and the third arcuate surface 32 are both bent inwardly and symmetrically arranged. At the same time, Figure 2 As shown, an arc angle 12 is provided between the top contact surface 2 and the side contact surface 3 , and the first arc surface 21 extends below the arc angle 12 .

[0041] like Figure 3 and Figure 4 As shown, in Example 1, the thickness of the hollow plate is relatively thick, the thickness of the cover plate 1 is 4 mm to 8 mm, the wall thickness of the adjacent hollow groove 11 is 1 mm to 2 mm, and the width of the hollow groove 11 is 2 mm to 4 mm. In Example 1, the thickness of the cover plate 1 is 8 mm, the wall thickness of the hollow groove 11 is 1.5 mm, and the width of the hollow groove 11 is 4 mm. When the first curved surface 21 is formed by hot melting, the first curved surface 21 is formed with a window 23 at the top of the hollow groove 11, and the aperture of the window 23 is 1 mm to 3 mm, which is formed according to the actual situation of hot melting; at the same time, during hot melting or ultrasonic welding, the first curved surface 21 is formed with a welding belt 22 in the thickness direction of the cover plate 1, and the welding belt 22 protrudes from both sides of the cover plate 1, and the welding belt 22 is arc-shaped.

[0042] like Figure 2 As shown, the inclination angle of the side contact surface 3 is 2° to 5°, and the number of hollow grooves 11 in the width direction of the side contact surface 3 is 2-5. In Example 1, the number of hollow grooves 11 in the figure within the range of the side contact surface 3 is 2, and the inclination angle is 5°.

[0043] like Figure 7 As shown, the angles of the second curved surface 31 and the third curved surface 32 are 60° to 80°. The second curved surface 31 and the third curved surface 32 are also formed on the side of the cover plate 1 by heat melting or ultrasonic welding, which has the advantages of removing burrs and preventing hand cuts.

[0044] Working principle:

[0045] During use, the top contact surface 2 of the cover plate 1 is arranged relative to the top contact surface 2 of the other side cover plate 1. The top contact surface 2 belongs to the long side of the cover plate 1 and usually contacts the operator's hand. Therefore, the first arc surface 21 has a better effect of preventing cuts.

[0046] Embodiment 2:

[0047] like Figure 5 and Figure 6As shown, an arc-shaped edge sealing structure of an original tobacco turnover box is generally the same as that of Example 1, because the thickness of the cover plate 1 is relatively thin, that is, the thickness of the cover plate 1 is 3 mm to 5 mm, the wall thickness of the adjacent hollow groove 11 is 0.5 mm, and the width of the hollow groove 11 is 1 mm to 2 mm. In Example 2, the thickness of the cover plate 1 is 4 mm, and the width of the hollow groove 11 is 2 mm. Therefore, after hot melting or ultrasonic welding, the window 23 is avoided and a smooth and continuous first arc-shaped surface 21 is formed. At the same time, it should be known that after adjusting the thickness, width and welding or melting amount ratio, a first arc-shaped surface 21 without a window 23 can also be achieved.

[0048] Embodiment 3:

[0049] like Figures 8 to 9 As shown, an edge sealing mold for processing an arc-shaped edge sealing structure of an original tobacco turnover box includes a frame 5, a bottom plate 51, a top plate 52, an edge sealing roller 53, a heating column 54, a lubricating column 55 and an elastic telescopic shaft 56. The cover plate 1 is located between the bottom plate 51 and the top plate 52. The edge sealing roller 53 is provided with an arc groove 57 that contacts the top contact surface 2 and the side contact surface 3. The cross-sectional shape of the arc groove 57 is circular. The arc groove 57 is concentrically arranged with the edge sealing roller 53. The edge sealing roller 53, the heating column 54 and the lubricating column 55 are rotatably connected between the bottom plate 51 and the top plate 52. The heating column 54 and the lubricating column 55 are rotatably connected. 55 are respectively located on both sides of the edge banding roller 53, the heating column 54 is connected to the base plate 51 through a bearing, and the lubricating column 55 is also connected to the base plate 51 through a bearing. At the same time, a heating wire is arranged in the heating column 54, and the heat is transferred to the edge banding roller 53 through the contact between the heating column 54 and the edge banding roller 53, and then the first arc surface 21 is formed by hot melting. At the same time, in order to prevent the edge banding roller 53 from sticking in the arc groove 57 of the edge banding roller 53 during the hot melting connection, the edge banding roller 53 is lubricated by the lubricating column 55 filled with a release agent to prevent adhesion and facilitate subsequent demolding.

[0050] One end of the elastic telescopic shaft 56 is connected to the frame 5, and the other end of the elastic telescopic shaft 56 is connected to the bottom plate 51. Through the spring inside the elastic telescopic shaft 56, the edge sealing roller 53 is always in contact with the side of the cover plate 1, and the side of the cover plate 1 is hot-melted to form a first arc surface 21.

[0051] Working principle:

[0052] After the sheet is die-cut, the top contact surface 2 of the cover plate 1 passes through the edge banding roller 53 in the horizontal direction, and the elastic telescopic shaft 56 presses the edge banding roller 53 against the top contact surface of the cover plate 1. The edge banding roller 53 rotates, and the heating column 54 transfers heat to the edge banding roller 53. At the same time, the lubricating column 55 in the front covers the release agent on the edge banding roller 53. When the top contact surface 2 of the cover plate 1 passes through, the first arc surface 21, the second arc surface 31 and the third arc surface 32 are formed.

Claims

1. A curved edge sealing structure for a raw tobacco turnover box, comprising a cover plate (1), characterized in that: The cover plate (1) comprises a top contact surface (2), a side contact surface (3) and a bottom connecting surface (4); the side contact surfaces (3) are arranged on both sides of the top contact surface (2); the bottom connecting surface (4) is connected to a box body side plate (13); the bottom connecting surface (4) is arranged opposite to the top contact surface (2); the top of the side contact surface (3) extends to the top contact surface (2); the bottom of the side contact surface (3) extends to the bottom connecting surface (4); a hollow groove (11) is arranged in the cover plate (1); the hollow groove (11) ) is arranged to penetrate along the height direction of the cover plate (1), the hollow groove (11) is evenly distributed along the width direction of the cover plate (1), a first arcuate surface (21) is arranged at the connection position between the hollow groove (11) and the top contact surface (2), the longitudinal cross-section of the first arcuate surface (21) is arc-shaped, and a second arcuate surface (31) and a third arcuate surface (32) are formed at the connection position between the hollow groove (11) and the side contact surface (3), the second arcuate surface (31) and the third arcuate surface (32) are both bent inwardly and symmetrically arranged.

2. The arc-shaped edge sealing structure of the raw tobacco turnover box according to claim 1 is characterized in that: An arc angle (12) is provided between the top contact surface (2) and the side contact surface (3), and the first arc surface (21) extends below the arc angle (12).

3. The arc-shaped edge sealing structure of the raw tobacco turnover box according to claim 2 is characterized in that: The inclination angle of the side contact surface (3) is 2° to 5°.

4. The arc-shaped edge sealing structure of the raw tobacco turnover box according to claim 3 is characterized in that: The number of the hollow grooves (11) in the width direction of the side contact surface (3) is 2 to 5.

5. The arc-shaped edge sealing structure of the raw tobacco turnover box according to claim 1 is characterized in that: The angle between the second arcuate surface (31) and the third arcuate surface (32) is 60° to 80°.

6. The arc-shaped edge sealing structure of the raw tobacco turnover box according to claim 1 is characterized in that: The thickness of the cover plate (1) is 3 mm to 5 mm, the wall thickness of the adjacent hollow groove (11) is 0.5 mm, and the width of the hollow groove (11) is 1 mm to 2 mm.

7. The arc-shaped edge sealing structure of the raw tobacco turnover box according to claim 6 is characterized in that: The first arc-shaped surface (21) is formed with a welding band (22) in the thickness direction of the cover plate (1), the welding band (22) protrudes from both sides of the cover plate (1), and the welding band (22) is arc-shaped.

8. The arc-shaped edge sealing structure of the raw tobacco turnover box according to claim 1 is characterized in that: The thickness of the cover plate (1) is 4 mm to 8 mm, the wall thickness of the adjacent hollow groove (11) is 1 mm to 2 mm, and the width of the hollow groove (11) is 2 mm to 4 mm.

9. The arc-shaped edge sealing structure of the raw tobacco turnover box according to claim 8 is characterized in that: The first arc-shaped surface (21) forms a window (23) at the top of the hollow groove (11), and the aperture of the window (23) is 1 mm to 3 mm.

10. An edge sealing mold for processing the arc-shaped edge sealing structure of the original tobacco turnover box according to any one of claims 1 to 9, characterized in that: The invention comprises a frame (5), a bottom plate (51), a top plate (52), an edge-sealing roller (53), a heating column (54), a lubricating column (55) and an elastic telescopic shaft (56); the cover plate (1) is located between the bottom plate (51) and the top plate (52); an arc groove (57) in contact with a top contact surface (2) and a side contact surface (3) is provided on the edge-sealing roller (53); the arc groove (57) is arranged concentrically with the edge-sealing roller (53); the edge-sealing roller (53), the heating column (54) and the lubricating column (55) are rotatably connected between the bottom plate (51) and the top plate (52); the heating column (54) and the lubricating column (55) are respectively located on both sides of the edge-sealing roller (53); one end of the elastic telescopic shaft (56) is connected to the frame (5); and the other end of the elastic telescopic shaft (56) is connected to the bottom plate (51).

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