Smoking substrate additive roll-on application apparatus

Abstract

The utility model discloses a kind of smoking base material additive roll coating application equipment, the main design concept of the utility model is in, by roll coating component and additive application pipeline constitute, wherein roll coating component includes: three compression rollers are installed on swing arm, two compression rollers are close to export, and another compression roller is close to import;Additive application pipeline is connected with the trough below two compression rollers at export;And between trough and two compression rollers are equipped with feeding metering roller;Control material metering roller is adjacently set with feeding metering roller, and the spacing of two metering rollers is adjusted by auxiliary cylinder;Swing arm is driven by main cylinder, to drive three compression rollers to move to compress base material. The roll coating process equipment provided by the utility model can promote the absorption of additive efficiently at the same time, and produce tensioning, shaping effect to base material surface, so that its surface is more flat, which is more conducive to subsequent processing procedure.

Description

Technical Field

[0001] This utility model relates to the field of cigarette manufacturing, and in particular to a roller coating device for applying additives to a smoke-generating substrate. Background Technology

[0002] When it comes to flavoring and adding ingredients to the base material of heated cigarettes, it is necessary to consider factors such as the solubility, volatility, heat sensitivity, and chemical reaction of the additive liquid, as well as the sheet processing technology and the delivery law of flavoring substances. How to ensure the application effect and reduce waste is an important research topic in the tobacco industry.

[0003] To elaborate, for heated cigarettes, additives are generally applied in two ways. Previously, they were applied during the sheet processing, but this method suffers from significant loss of aroma substances during the heating and drying process, varying loss rates of different components, high energy consumption, and a poor environment. It also impacts production environment and efficiency. Furthermore, some additives are prone to flocculation and crystallization in the slurry, severely affecting product quality. To address this issue, some companies have implemented atomized spray additive application processes and devices between the cutting and winding stages of heated cigarette rolling, spraying the additive onto the sheet surface. However, the additive is difficult to absorb effectively in a short time, causing it to come into direct contact with the cigarette paper. This leakage forms yellow spots, resulting in defects in the appearance of the rolled cigarette. Since cigarette rolling and packaging production lines are generally continuous, the formation of yellow spots takes time, sometimes several hours or more, making it difficult to detect and remove them manually or through on-line visual inspection and rejection devices. Utility Model Content

[0004] In view of the above, the present invention aims to provide a roller coating application device for smoke-generating substrate additives to solve the aforementioned technical problems.

[0005] The technical solution adopted in this utility model is as follows:

[0006] This utility model provides a roller coating application device for a smoking substrate additive, including:

[0007] Roller coating assembly and additive application piping;

[0008] The roller coating assembly specifically includes: a first pressure roller, a second pressure roller, and a third pressure roller mounted on a rocker arm. The first pressure roller and the second pressure roller are close to the substrate outlet end and have the same diameter. The third pressure roller is close to the substrate inlet end and has a support roller that cooperates with it on one side.

[0009] The additive application pipeline is connected to a material trough located below the first pressure roller and the second pressure roller, and the material trough is used to hold the additive liquid.

[0010] A feeding metering roller is installed between the material trough and the first and second pressure rollers;

[0011] Furthermore, the control metering roller is arranged adjacent to the feeding metering roller, and the control metering roller is used to lift the additive liquid in the material tank and form a film; the control metering roller is driven by an auxiliary cylinder to adjust the distance between it and the feeding metering roller.

[0012] The main cylinder is connected to the rocker arm, and the first pressure roller, the second pressure roller, and the third pressure roller move up and down while the main cylinder drives the rocker arm to move.

[0013] In at least one of the possible implementations, the first pressure roller and the second pressure roller are driven by independent servo geared motors, or by a servo geared motor and a toothed belt;

[0014] The third pressure roller is driven by an independent servo geared motor.

[0015] In at least one possible implementation, the first pressure roller, the second pressure roller, the third pressure roller, and the feeding metering roller are all made of chrome-plated steel.

[0016] In at least one possible implementation, the surface of the control metering roller is coated with a microporous ceramic layer.

[0017] In at least one possible implementation, rubber scrapers are mounted on both sides of the feeding metering roller, the scrapers being used to adjust the film width.

[0018] In at least one of the possible implementations, the additive application pipeline includes, in sequence, a tank, a filter, a gear pump, and a flow meter.

[0019] In at least one possible implementation, the roller coating application device further includes a return pipeline assembly installed at the bottom of the trough and connected to the material tank.

[0020] Compared with existing technologies, the main design concept of this utility model lies in its composition of a roller coating assembly and an additive application pipeline. The roller coating assembly includes three pressure rollers mounted on a rocker arm, with two rollers near the outlet and the other near the inlet. The additive application pipeline connects to a material trough below the two pressure rollers at the outlet. A feeding metering roller is installed between the material trough and the two pressure rollers. A control metering roller is arranged adjacent to the feeding metering roller, and the distance between the two metering rollers is adjusted by an auxiliary cylinder. The rocker arm is driven by a main cylinder to move the three pressure rollers up and down to press the substrate. The roller coating equipment provided by this utility model can efficiently promote additive absorption while simultaneously tensioning and shaping the substrate surface, resulting in a smoother surface that is more conducive to subsequent processing steps. Attached Figure Description

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the utility model will be further described below with reference to the accompanying drawings, wherein:

[0022] Figure 1 A schematic diagram of the roller coating assembly of the smoke-generating substrate additive roller coating application equipment provided in an embodiment of this utility model. Detailed Implementation

[0023] 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 elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] First, the production line process for applying additives to the heated cigarette smoke-generating substrate upon which this utility model is based is described as follows, including:

[0025] Sheet unwinding—conveying—sheet temperature control—additive application—limiting tension—slitting—rewinding—vacuum sealing—storage.

[0026] To elaborate, (1) the unwinding process is to unwind a certain width of sheet roll produced by the sheet production line through an unwinding machine; the moisture content of the sheet roll can be set to 4~6% and it is sealed in packaging; the width of the sheet roll is 0.1~5mm less than the length of the unwinding machine's roller.

[0027] (2) The conveying process is to transport the unwound sheet to the additive application system. In actual operation, the conveyor can mainly be a mesh belt machine, roller conveyor, double roller traction machine, etc.

[0028] (3) The sheet temperature adjustment process involves heating the sheet using a heating device. The heating device can heat the sheet to 40~80℃, which is beneficial for the sheet to absorb the liquid and can also regulate the moisture content of the sheet.

[0029] (4) The additive application process involves applying additives to the sheets conveyed in the conveying process. The additives may be a fogging agent such as propylene glycol or glycerol, or tobacco extracts, flavorings, or surface isolators used for moisture protection, such as polyvinyl alcohol or hydrophobic modified cellulose. The equipment involved in this step will be described in detail later.

[0030] (5) The limiting and tensioning process is to keep the sheet in the center of the sheet through the limiting device to prevent it from deviating, and to make the sheet in a tensioned state, which is beneficial to the subsequent slitting and winding processes.

[0031] (6) The slitting process is to slit the sheet with additives into several equidistant sheet rolls required for composite products, which are then used for subsequent processing into heated cigarettes.

[0032] (7) The winding process is to rewind the thin sheets cut into a preset width into a reel by a winding machine; the reel shaft is an empty cylinder, the length of which is less than the width of the thin sheet (1~5) mm, which is conducive to unwinding, cutting and forming in the vacuum packaging and cigarette forming process; the sides of the thin sheet reel must be neat, with a deviation of no more than 0.5 mm; the tail of the reel can be glued with tape to prevent the reel from falling apart.

[0033] (8) The vacuum sealing process is to vacuum seal the roll formed in the winding process by a vacuum sealing packaging machine. The sealing bag is made of BOPP material or other food-grade material. The negative pressure inside the bag is controlled at 200~1000Pa during sealing.

[0034] (9) The storage process involves storing the vacuum-sealed reel. The storage conditions can be set as follows: temperature ≤ 28℃, ambient humidity ≤ 32℃, and storage time of 5 to 180 days. It should be noted that if the storage time is less than five days, the material liquid may not be fully absorbed. If the storage time is too long, external moisture may easily penetrate into the sealed bag, leading to changes in the quality of the raw materials.

[0035] In this utility model, for the specific process equipment used in the aforementioned additive application process, a roller coating process and corresponding device are selected. Therefore, based on the aforementioned process route, this utility model proposes an embodiment of a roller coating application device for smoking substrate additives. Specifically, as follows... Figure 1 As shown, this includes: a roller coating assembly and an additive application pipeline (not shown in the figure).

[0036] The roller coating assembly specifically includes: a first pressure roller 1, a second pressure roller 2, and a third pressure roller 8 mounted on a rocker arm. The first pressure roller 1 and the second pressure roller are close to the substrate outlet end, and the third pressure roller 8 is close to the substrate inlet end. A support roller 4 that cooperates with the third pressure roller 8 is provided on one side of the third pressure roller 8.

[0037] The additive application pipeline is connected to the material trough 5 located below the first pressure roller 1 and the second pressure roller 2. The material trough 5 is used to hold the additive liquid.

[0038] A feeding metering roller 6 is installed between the material trough 5 and the first pressure roller 1 and the second pressure roller 2;

[0039] The control metering roller 3 is arranged adjacent to the feeding metering roller 6. The control metering roller 3 is used to carry up the additive liquid in the material tank 5 and attach it to the feeding metering roller 6 to form a film for coating. The control metering roller 3 is driven by an auxiliary cylinder to adjust the distance between it and the feeding metering roller 6.

[0040] In some preferred embodiments, the surface of the control metering roller 3 is coated with a microporous ceramic layer, and more preferably, its outer circumference can be ground flat during processing, which increases the surface tension and makes it easier to carry the additives and form a film. Additionally, rubber scrapers can be optionally installed on both sides of the feeding metering roller 6 to adjust the film width.

[0041] The main cylinder 7 is connected to the rocker arm. The first pressure roller 1, the second pressure roller 2, and the third pressure roller 8 move up and down while the main cylinder 7 drives the rocker arm to move, thereby achieving separation or pressing. Thus, the first pressure roller 1 and the second pressure roller 2 can cooperate with the feeding metering roller 6 to press the roller-coated substrate (sheet) near the outlet end. Similarly, the third pressure roller 8 and the support roller 4 can cooperate to press the sheet near the inlet end.

[0042] The first pressure roller 1 and the second pressure roller 2 have the same diameter, and they can be driven by independent servo geared motors, or they can be driven by a servo geared motor and a toothed belt.

[0043] During the roll coating process, the linear speeds of the first pressure roller 1, the second pressure roller 2, the third pressure roller 8, and the feeding metering roller 6 are consistent. Therefore, the third pressure roller 8 can be driven by an independent servo geared motor.

[0044] In order to improve the rigidity of the above-mentioned key roller coating components and prevent them from deforming, the first pressure roller 1, the second pressure roller 2, the third pressure roller 8 and the feeding metering roller 6 are preferably made of steel and have hard chrome plated on the surface.

[0045] Based on the above embodiments, in some preferred embodiments, the additive application pipeline specifically includes, in sequence, a material tank, a filter, a gear pump, and a flow meter; the material tank preferably has sensing components such as material level detection (or weight detection) and temperature detection, and is also equipped with a liquid heating component, a stirring component, and a cleaning function; wherein, the liquid heating component is used to heat the additive liquid at a heating rate of not less than 2.0℃ / min, and the target temperature range after heating is preferably controlled to be (30~40)±2℃; more preferably, the material tank is configured in a one-for-use, one-for-storage, and one-for-standby manner.

[0046] Furthermore, the roller coating application equipment preferably includes a return pipeline assembly (not shown), which is installed at the bottom of the material tank 5 and connected to the material container for recovering any remaining additive liquid. For example, the remaining liquid can be returned to the material container via a suction pump and a filter component.

[0047] Finally, the working method of this utility model can be referred to the following brief introduction. After production starts, preparatory work is carried out: the three pressure rollers are lifted by the rocker arm, the feeding metering roller 6 and the control metering roller 3 are in a separated state, the sheet enters from the inlet end, passes through the gap between the rollers, and is led out from the outlet end to the next process. After completing the above preparatory work, the roller coating working state is entered. The control metering roller 3 approaches the feeding metering roller 6 and starts to operate. The three operating pressure rollers move down to press the sheet being conveyed (the purpose of pressing is to keep the sheet in a flat and taut state, which is convenient for subsequent processing). At the same time, the above-mentioned roller coating components apply the additive in the material groove 5 to the sheet. In order to improve the roller coating effect, the gap between the feeding metering roller 6 and the control metering roller 3, and between the feeding metering roller 6 and the first pressure roller 1 and the second pressure roller 2, can all be pre-adjusted in the working state by using a precision thread device. This utility model does not limit or elaborate on this.

[0048] In summary, the main design concept of this utility model is that it consists of a roller coating assembly and an additive application pipeline. The roller coating assembly includes three pressure rollers mounted on a rocker arm, with two pressure rollers near the outlet and the other pressure roller near the inlet. The additive application pipeline is connected to a material trough below the two pressure rollers at the outlet. A feeding metering roller is installed between the material trough and the two pressure rollers. A control metering roller is arranged adjacent to the feeding metering roller, and the distance between the two metering rollers is adjusted by an auxiliary cylinder. The rocker arm is driven by a main cylinder to move the three pressure rollers up and down to press the substrate. The roller coating equipment provided by this utility model can efficiently promote the absorption of additives while producing a tensioning and shaping effect on the surface of the substrate, making its surface smoother and more conducive to subsequent processing steps.

[0049] In this embodiment of the invention, any use of terms expressing location is based on a relative concept of the embodiment. Furthermore, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent the existence of A alone, A and B simultaneously, or B alone. A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0050] The above description of the structure, features, and effects of this utility model is based on the embodiments shown in the drawings. However, the above are only preferred embodiments of this utility model. It should be noted that the technical features involved in the above embodiments and their preferred methods can be reasonably combined and matched by those skilled in the art to form a variety of equivalent solutions without departing from or changing the design concept and technical effects of this utility model. Therefore, this utility model is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, should be within the protection scope of this utility model.

Claims

1. A roller coating application device for a smoking substrate additive, characterized in that, include: Roller coating assembly and additive application piping; The roller coating assembly specifically includes: a first pressure roller, a second pressure roller, and a third pressure roller mounted on a rocker arm. The first pressure roller and the second pressure roller are close to the substrate outlet end and have the same diameter. The third pressure roller is close to the substrate inlet end and has a support roller that cooperates with it on one side. The additive application pipeline is connected to a material trough located below the first pressure roller and the second pressure roller, and the material trough is used to hold the additive liquid. A feeding metering roller is installed between the material trough and the first and second pressure rollers; Furthermore, the control metering roller is arranged adjacent to the feeding metering roller, and the control metering roller is used to lift the additive liquid in the material tank and form a film; the control metering roller is driven by an auxiliary cylinder to adjust the distance between it and the feeding metering roller. The main cylinder is connected to the rocker arm, and the first pressure roller, the second pressure roller, and the third pressure roller move up and down while the main cylinder drives the rocker arm to move.

2. The roller coating equipment for smoke-generating substrate additives according to claim 1, characterized in that, The first pressure roller and the second pressure roller are driven by independent servo geared motors, or by a servo geared motor and a toothed belt. The third pressure roller is driven by an independent servo geared motor.

3. The roller coating equipment for smoke-generating substrate additives according to claim 1, characterized in that, The first pressure roller, the second pressure roller, the third pressure roller, and the feeding metering roller are all made of chrome-plated steel.

4. The roller coating equipment for smoke-generating substrate additives according to claim 1, characterized in that, The surface of the material control and metering roller is coated with a microporous ceramic layer.

5. The roller coating equipment for smoke-generating substrate additives according to claim 1, characterized in that, Rubber scrapers are installed on both sides of the feeding metering roller, and the scrapers are used to adjust the film width.

6. The roller coating equipment for smoke-generating substrate additives according to any one of claims 1 to 5, characterized in that, The additive application pipeline includes, in sequence, a material tank, a filter, a gear pump, and a flow meter.

7. The roller coating equipment for smoke-generating substrate additives according to claim 6, characterized in that, The roller coating application equipment further includes a return pipeline assembly, which is installed at the bottom of the material trough and connected to the material tank.

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