A splicing device for thin sheet materials of different widths

Through the coordination of arc-shaped protrusions and plane rollers and the power machine control, the problems of increased thickness, insufficient tensile strength and poor adaptability during the splicing process of tobacco sheet material are solved, and the continuous supply and tensile strength of tobacco base rods are achieved. Simplified process steps and adapted to different widths of materials.

CN111332845BActive Publication Date: 2024-12-20KUNMING DINGCHENGQIXIN TECH CO LTD
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Patent Information

Application Number
CN202010275951.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-04-09
Publication Date
2024-12-20
Estimated Expiration
2040-04-09

AI Technical Summary

Technical Problem

The prior art has problems such as increasing thickness, insufficient tensile strength, adhesive affecting taste, and difficulty in adapting to materials of different widths in the splicing process of tobacco sheet materials, resulting in blockage of unqualified products and equipment.

Method used

A splicing device including arc-shaped protrusions and plane rollers is designed. Through the cooperation of arc-shaped protrusions and plane rollers, an oblique segment splicing is formed. The roller surface is adjusted using studs and bolts to adapt to materials of different widths, and through a power machine and The controller realizes rapid tear and adjustment to ensure the tensile strength and adaptability of the splicing section.

Benefits of technology

The continuous supply of thin sheet materials is achieved, the equipment is blocked and the product is not qualified, the tensile strength and adaptability are ensured, the process steps are simplified, and the production requirements of tobacco-based rods are met without the need to replace the rollers to adapt to materials of different widths. .

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Abstract

The present invention provides a thin sheet material splicing device adapted to different widths, comprising a first roller and a second roller matched with each other, characterized in that: an arc-shaped protrusion is provided on the roller surface of the first roller, and the second roller is set as a flat roller; the roller surfaces of the first and second rollers are both suspended on a mounting seat, and a strip-shaped through hole is provided on the roller shaft of the first roller, and a connecting piece connected to the roller surface of the first roller is placed in the strip-shaped through hole. The new and old thin sheet materials entering between the two rollers should be spliced ​​into a splicing section with a certain width in the width direction at one time, which gradually transitions from one side to the other side and has a certain width. When passing through the relevant equipment of the subsequent process, only 3-35% of the thickened part passes, and the rest passes as a single layer, which completely solves the problem of blocking and the diameter of the tobacco base rod exceeding the specified value, ensures the tensile strength of the splicing section, and simplifies the splicing structure.
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Description

Technical Field

[0001] The invention relates to a strip material splicing mechanism, in particular to a splicing device capable of adapting to heat-not-burn tobacco sheets of different widths, belonging to the technical field of extrusion splicing device design and manufacturing. Background Art

[0002] In the automated tobacco processing industry, raw and auxiliary materials are supplied in the form of rolled sheet materials to produce tobacco base rods, which are then wrapped in cigarette paper to form cigarettes. In actual production, sheet materials are required to be supplied continuously, so the tail of the old sheet material that is about to be used up needs to be spliced ​​with the head of the new sheet material.

[0003] However, the existing technology of splicing with auxiliary materials or splicing without auxiliary materials has the following shortcomings to a greater or lesser extent:

[0004] 1) The thickness of the new and old sheet materials will inevitably increase, and the thickness is at least twice the thickness of the single-layer sheet material. Such a thickness will cause the diameter of the tobacco base rod produced by the downstream equipment to exceed the allowed range, resulting in the appearance of unqualified products. It will also cause the downstream equipment to be blocked and even shut down for maintenance, thus failing to meet the requirements of the production process;

[0005] 2) The addition of adhesives to splice together products with auxiliary materials may change the taste of the final product and even cause food safety accidents;

[0006] 3) The tensile strength of the joint section between the new and old sheet materials is much lower than that of normal sheet materials, and cannot meet the tensile strength requirements of tobacco sheet materials in the production process of heat-not-burn cigarettes;

[0007] 4) The width during splicing is fixed, which makes it difficult to adapt to the splicing requirements of thin sheet materials of different widths, and one machine cannot be used for multiple purposes. At least the squeezing roller for splicing needs to be replaced, which increases investment and cost.

[0008] Therefore need to develop a kind of sheet material splicing mechanism that can solve all of above-mentioned problems simultaneously. Summary of the invention

[0009] The object of the present invention is to provide a splicing device which can form a slanted section of a new sheet material and an old sheet material splicing section at one time and can adapt to different widths.

[0010] The present invention is completed by the following technical scheme: a device for splicing thin sheet materials of different widths, comprising a first roller and a second roller matched with each other, characterized in that:

[0011] The roller surface of the first roller is provided with an arc-shaped protrusion, and the second roller is a flat roller;

[0012] The roller surfaces of the first and second rollers are both suspended on the mounting seat, and a strip-shaped through hole is provided on the roller shaft of the first roller, and a connecting piece connected to the roller surface of the first roller is placed in the strip-shaped through hole;

[0013] So that through the cooperative extrusion of the roller surface with arc-shaped protrusions and the flat roller, the leading end of the new sheet material and the tail end of the old sheet material entering between the two roller surfaces can form an inclined splicing section that gradually transitions from one end to the other end in the width direction at one time, and through the strip through hole on the roller shaft of the first roller, the roller surface can move axially to adapt to the splicing of sheet materials of different widths.

[0014] The arc-shaped protrusion is a spiral line protrusion, or a bent wave line protrusion, or a curve protrusion with a continuous and smooth transition.

[0015] The surface of the arc-shaped protrusion is provided with a plurality of independent concave-convex teeth at intervals or continuously, and the plurality of independent concave-convex teeth are polygonal teeth, circular teeth or triangular teeth which are concave in the middle and convex on all sides, or polygonal teeth, circular teeth or triangular teeth which are convex in the middle and concave on all sides, and are single polygonal teeth, circular teeth or triangular teeth, or are at least two of crossed or alternating polygonal teeth, circular teeth and triangular teeth.

[0016] At least one end of the arc-shaped protrusion is provided with a straight section perpendicular to the running direction of the new and old sheet materials, which is used to remove the front and rear end waste materials during the splicing process to create favorable mechanical conditions.

[0017] The distance between the feed-side roller surface of the arc-shaped protrusion and the top surface of the arc-shaped protrusion is 0.3-2 times the thickness of the sheet material, so as to play a role of tension isolation during the splicing process, and at the same time prevent the tobacco sheet from producing plastic deformation, providing favorable conditions for quickly tearing off the waste at the head of the new sheet material and the tail of the old sheet material; the distance between the discharge-side roller surface of the arc-shaped protrusion and the top surface of the arc-shaped protrusion is at least 2 times the thickness of the sheet material, so as to eliminate obstacles for quickly tearing off the waste at the head of the new sheet material and the tail of the old sheet material during the splicing process.

[0018] The discharge side of the arc-shaped protrusion is not provided with a roller surface, so as to eliminate obstacles for quickly tearing off the waste at the head of the new sheet material and the tail of the old sheet material during the splicing process.

[0019] The width of the arc-shaped protrusion is 3-35% of the width of the sheet material, so as to reduce the splicing area of ​​the splicing section as much as possible while ensuring that the splicing section has sufficient splicing strength.

[0020] The roller shafts of the first and second rollers are respectively provided with roller surfaces with the same cross-section being fan-shaped, and an arc-shaped protrusion is arranged on the roller surface of the first roller, and the second roller is set as a flat roller.

[0021] The connecting piece connected to the roller surface of the first roller is at least two studs, the inner end of each stud is screwed to the corresponding screw hole on the roller surface, and the outer end extends outward through the corresponding strip through hole on the roller shaft and is connected to the nut, so that the roller surface can be adjusted to move along the roller shaft as needed, and thin sheet materials of different widths can be spliced ​​without replacing the first roller.

[0022] The connecting piece connected to the roller surface of the first roller is at least two bolts, and the inner end of each bolt extends through the corresponding strip through hole on the roller shaft and then is screwed into the corresponding screw hole on the roller surface, so that the roller surface can be adjusted to move along the roller shaft as needed, and thin sheet materials of different widths can be spliced ​​without replacing the first roller.

[0023] The first and second rollers are connected to corresponding power machines respectively, and the power machines are connected to corresponding conventional controllers so that the corresponding power machines can be controlled by the controllers.

[0024] The splicing mechanism provided by the present invention not only completes the rolling splicing of the new and old thin sheet materials entering between the two rollers, but also forms a splicing section with a certain width that gradually transitions from one side to the other side in the width direction of the new and old thin sheet materials. After the thin sheet materials are unfolded, the splicing section becomes an oblique straight section or an oblique arc splicing section. At least one end of the splicing section is a straight section parallel to the width direction of the new and old thin sheet materials, so that only 3-35% of the thickness of each cross section of the splicing section is double-layered (thick), and the rest is single-layered (thin). Therefore, in the subsequent process When the relevant equipment is used, only 3-35% of the thickened part passes through, and the rest are all single-layered, which completely solves the problem of blocking and the diameter of the tobacco base rod exceeding the regulations, while ensuring the tensile strength of the splicing section. The inclined splicing section is completed by rolling once, which greatly simplifies the process steps and equipment structure, meets the geometric dimensions of the tobacco base rod, the taste and other requirements of the subsequent tobacco base rod, and through the movement of the first roller surface, the sheet materials of different widths can be spliced ​​without replacing the first roller, thereby providing reliable technical support for the production of heat-not-burn cigarette products. The splicing mechanism provided by the present invention is also used for the splicing of other sheet materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 for Figure 1 A magnified view of part A in FIG.

[0027] Figure 3 It is a schematic diagram of the application of the present invention;

[0028] Figure 4 for Figure 1 Partial view of new and old sheet materials with oblique joints processed in the structure shown

[0029] Figure 5 It is another schematic diagram of the roller surface structure of the present invention;

[0030] Figure 6 for Figure 5 Partial view of new and old sheet materials with oblique joint sections processed in the structure shown;

[0031] Figure 7 Another structural schematic diagram of the present invention;

[0032] Figure 8 The structure diagram of the first and second rollers with adjustable width;

[0033] Fig. 9 This is the structural diagram of the first roller. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings.

[0035] The pressure-adjustable sheet material splicing mechanism provided by the present invention comprises a first roller and a second roller matched with each other, and is characterized in that: an arc-shaped protrusion 512 is provided on the roller surface 511 of the first roller, and the second roller is a flat roller 521; the roller surfaces 511 and 521 of the first roller and the second roller are both suspended on the mounting seat 5; the second roller is connected to the lifting mechanism;

[0036] The arc-shaped protrusion 512 is a spiral protrusion, and can obviously also be a curved wave-line protrusion, or a continuous and smoothly transitioned curved protrusion;

[0037] The surface of the arc-shaped protrusion 512 is provided with a plurality of independent concave and convex teeth at intervals, and the plurality of independent concave and convex teeth are all single quadrilateral teeth with a concave middle portion 5121 and convex surrounding portions 5122, and can obviously also be single circular teeth or triangular teeth with a concave middle portion and convex surrounding portions, or single polygonal teeth or circular teeth or triangular teeth with a convex middle portion and concave surrounding portions, or at least two of crossed or alternating polygonal teeth, circular teeth, and triangular teeth;

[0038] One end of the arc-shaped protrusion 512 is provided with a straight section 513 perpendicular to the running direction of the new and old thin sheet materials, which is used to remove the waste at the head of the new thin sheet material and the tail of the old thin sheet material during the splicing process to create favorable mechanical conditions;

[0039] The width of the arc-shaped protrusion 512 is 9% of the width C of the thin sheet material, so as to reduce the splicing area of ​​the splicing section B as much as possible while ensuring that the splicing section B has sufficient splicing strength;

[0040] The distance between the feed side roller surface 514 of the arc-shaped protrusion 512 and the top surface of the arc-shaped protrusion 512 is 0.5 times the thickness of the sheet material, so as to play a role in isolating tension during the splicing process, and prevent plastic deformation of the tobacco sheet, and eliminate obstacles for quickly tearing off the waste at the head of the new sheet material and the tail of the old sheet material;

[0041] A roller surface 515 is provided on the discharge side of the arc-shaped protrusion 512, and the distance between the roller surface 515 and the top surface of the arc-shaped protrusion 512 is at least twice the thickness of the thin sheet material, so as to eliminate obstacles for quickly tearing off the waste at the head of the new thin sheet material and the tail of the old thin sheet material during the splicing process;

[0042] In addition, the discharge side of the arc-shaped protrusion 512 is not provided with a roller surface. Figure 7 , so as to eliminate obstacles for quickly tearing off the waste at the head of the new sheet material and the tail of the old sheet material during the splicing process.

[0043] The roller shafts 51 and 52 of the first and second rollers are respectively provided with roller surfaces 511 and 521 with the same cross-section being fan-shaped, and an arc-shaped protrusion 512 is provided on the roller surface 511 of the first roller, and the roller surface 521 of the second roller is set as a plane;

[0044] The roller shaft 51 of the first roller is provided with a strip-shaped through hole 516, and the roller surface 511 of the first roller is connected to two studs 517. The inner ends of the two studs 517 pass through the corresponding strip-shaped through holes 516 on the roller shaft and are screwed to the roller surface 511 of the first roller, and the outer ends are screwed to nuts 518, so that after loosening the nuts 518 as needed, the roller surface 511 can be moved along the roller shaft 51, and thin sheet materials of different widths can be spliced ​​without replacing the first roller;

[0045] The first and second rollers are connected to corresponding power machines respectively, and the power machines are connected to corresponding conventional controllers so that the corresponding power machines can be controlled by the controllers.

[0046] When working:

[0047] When the old sheet material roll 1 is about to be used up, its tail needs to be spliced ​​with the head of the new sheet material roll 2 to form a continuous sheet material;

[0048] When splicing:

[0049] 1) The tail of the old sheet material 4 and the head of the new sheet material 3 enter between the two roller surfaces 511 and 521 together. After rolling and pressing by the two rollers, a splicing section B with a certain width that gradually transitions from one side to the other side is formed in the width direction C of the new and old sheet materials 3 and 4. The splicing section B becomes an oblique straight splicing section or an oblique arc splicing section after the sheet materials are unfolded;

[0050] 2) When the new and old thin sheet materials 3 and 4 are spliced ​​together in step 1), once the two roller surfaces 511 and 521 are in contact until they separate, the output torque of the reel 11 and the shaft 6 is gradually changed to simultaneously and quickly tear off the waste at the head of the new thin sheet material 3 and the tail of the old thin sheet material 4;

[0051] 3) Loosen the nut 518 on the bolt 517 of the first roller surface 511 to move the first roller surface 511 along the roller shaft 51 to meet the splicing requirements of sheet materials with different widths.

[0052] The above description is only a specific example of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be within the protection scope of the present invention.

Claims

1. A device for splicing thin sheet materials of different widths, comprising a first roller and a second roller matched with each other, Features: The roller surface of the first roller is provided with an arc-shaped protrusion, and the second roller is a flat roller; The roller surfaces of the first and second rollers are both suspended on the mounting seat, and a strip-shaped through hole is provided on the roller shaft of the first roller, and a connecting piece connected to the roller surface of the first roller is placed in the strip-shaped through hole; The distance between the feed side roller surface of the arc-shaped protrusion and the top surface of the arc-shaped protrusion is 0.3-2 times the thickness of the thin sheet material, so that the new and old thin sheet materials entering between the two rollers are spliced ​​into a splicing section that gradually tilts from one side to the other side in the width direction, and only 3-35% of the thickness on each cross section of the splicing section is double-layered, and the rest is single-layered.

2. The device for splicing thin sheet materials of different widths according to claim 1, Features The arc-shaped protrusion is a spiral line protrusion, or a bent wave line protrusion, or a curve protrusion with a continuous and smooth transition.

3. The device for splicing thin sheet materials of different widths according to claim 1, Features The surface of the arc-shaped protrusion is provided with a plurality of independent concave-convex teeth at intervals or continuously, and the plurality of independent concave-convex teeth are a single polygonal tooth or circular tooth or triangular tooth with a concave center and convex surroundings, or a single polygonal tooth or circular tooth or triangular tooth with a convex center and concave surroundings, or at least two of crossed or alternating polygonal teeth, circular teeth and triangular teeth.

4. The device for splicing thin sheet materials of different widths according to claim 1, Features At least one end of the arc-shaped protrusion is provided with a straight section perpendicular to the running direction of the new and old sheet materials.

5. The device for splicing thin sheet materials of different widths according to claim 1, Features The distance between the discharge side roller surface of the arc-shaped protrusion and the top surface of the arc-shaped protrusion is at least twice the thickness of the sheet material.

6. The device for splicing thin sheet materials of different widths according to claim 1, Features The discharge side of the arc-shaped protrusion is not provided with a roller surface.

7. The device for splicing thin sheet materials of different widths according to claim 1, Features The width of the arc-shaped protrusion is 3-35% of the width of the sheet material.

8. The device for splicing thin sheet materials of different widths according to claim 1, Features The roller shafts of the first and second rollers are respectively provided with roller surfaces with the same cross-section being fan-shaped, and an arc-shaped protrusion is arranged on the roller surface of the first roller, and the second roller is set as a flat roller.

9. The device for splicing thin sheet materials of different widths according to claim 1, Features The connecting member connected to the roller surface of the first roller is at least two studs, the inner end of each stud is screwed into the corresponding screw hole on the roller surface, and the outer end extends outward through the corresponding strip through hole on the roller shaft and then is connected to the nut, or the connecting member connected to the roller surface of the first roller is at least two bolts, the inner end of each bolt extends inward through the corresponding strip through hole on the roller shaft and then is screwed into the corresponding screw hole on the roller surface.