Accurate determination method for bonding force of paper cigarette material

Abstract

The invention provides a method for accurately determining the bonding force of a material for paper cigarettes, and relates to the technical field of bonding force determination, and the method comprises the following steps: moving a glue placing plate right below a glue injection cylinder; adhesive with the preset adhesive dispensing amount is dispensed to the adhesive placing plate through the adhesive injection barrel; the glue placing plate is moved to the position under the measuring head; driving the measuring head to contact and extrude the glue placing plate at a preset pressure for a second preset time; the measuring head is driven to move upwards, the instant tensile force reading when the measuring head is separated from the adhesive placing plate is obtained, and the initial bonding force of the adhesive is obtained; and measuring pulling force readings at the moment when the measuring head is separated from the adhesive placing plate for many times to obtain the continuous adhesive force of the adhesive. According to the invention, the adhesive is accurately dispensed, the adhesive with a stable dispensing amount is obtained, the adhesive force of the adhesive is accurately measured through up-and-down displacement of the measuring head, contact with and separation from the adhesive on the adhesive placing plate, and the initial adhesive force and the continuous adhesive force of the adhesive can be effectively measured.

Description

Technical Field

[0001] The present invention relates to the technical field of adhesive force measurement, and in particular, to a method for accurately measuring the adhesive force of a paper cigarette material. Background Art

[0002] Cigarette adhesives have achieved remarkable results in the cigarette packaging industry due to their environmental friendliness and fast curing speed. At the same time, the application areas of cigarette packaging materials are constantly expanding, especially paper cigarette packaging materials (tipping paper, cigarette box sheets, seals, etc.) that have been processed by coating, etc., and their surfaces are mostly post-processed with UV varnish, UV ink, double-sided lamination and coatings with extremely low surface energy, which poses new challenges to the bonding performance of adhesives.

[0003] The widespread application of new materials, new technologies and new equipment in tobacco materials has led to changes in their surface properties to meet the needs of new products. At the same time, it has also caused problems with the adaptability of tobacco packaging materials and adhesives to the machine, resulting in the instability of the quality of finished cigarette products. At present, Hubei China Tobacco is focusing on expanding the application field and scope of transfer-type tipping paper. However, compared with ordinary tipping paper, since transfer-type tipping paper is further processed on its finished paper surface, a new interface is formed by coating and printing chemicals, and its interface has certain hydrophobicity and impermeability, resulting in certain defects in the adaptability of the machine during the cigarette making process, which has a certain impact on the production efficiency of the tobacco factory. Previous studies have shown that the adaptability of tipping paper to the machine is highly correlated with the type of paper. Ordinary paper performs better than transfer tipping paper in quality issues such as glue absorption, adhesion, and curling; paper water absorption and contact angle are highly correlated with the efficiency and quality of tipping paper on the machine. Due to the rapid curing nature of adhesives, the contact angle θ measurement is inaccurate. The above tests all have certain limitations and cannot truly reflect the situation of tipping paper on the machine. In addition, the adhesive force of the overlapping position of the tipping paper has a direct impact on the production process and the winding quality of the final product.

[0004] As a result, different people use the same experimental method to test the adhesion of tobacco materials and obtain very different values. The major influencing factors are the insufficient accuracy of adhesive dispensing and the non-repeatability of the measurement process. When dispensing, it is difficult to locate the dispensing position and the amount of dispensing is difficult to control. The difference in the amount of dispensing will directly affect the accuracy of the adhesion test. When measuring, when the bottom surface of the measuring head descends to contact the upper surface of the glue table, a collision is inevitable. At the least, it will cause the position of the measuring head or the glue table to change, resulting in deviations in the measurement position and measurement force; at worst, it will cause damage to the measuring head or the glue table. The measurement period cannot be determined. The adhesion includes initial adhesion (initial adhesion) and continuous adhesion (maintaining adhesion). The current adhesion measurement still relies on the operator to twist the adhesive multiple times by hand, and the accurate measurement time of the adhesive cannot be obtained, and the measurement accuracy is insufficient.

[0005] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable method for accurately measuring the adhesion of paper cigarette materials. Summary of the invention

[0006] The purpose of the present invention is to provide a method for accurately measuring the adhesion of paper cigarette materials, accurately dispense glue and obtain a stable dispensed amount of adhesive, and accurately complete the measurement of the adhesive adhesion by moving a measuring head up and down, contacting and separating from the adhesive on a glue plate, and effectively measuring the initial adhesion and continuous adhesion of the adhesive.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A method for accurately measuring the adhesion of paper cigarette materials, comprising the following steps: S1: Move the glue placement plate to the lower side of the glue injection part so that the glue placement plate is located directly below the glue injection cylinder of the glue injection part; S2: The glue dispensing machine behind the glue injection cylinder works for a first predetermined time, and a predetermined amount of adhesive is dispensed onto the glue placement plate through the glue injection cylinder; S3: moving the glue plate to the lower side of the measuring part so that the glue plate is located directly below the measuring head of the measuring part; S4: driving the measuring head to move downward until it contacts the glue plate, and driving the measuring head to press the glue plate with a predetermined pressure for a second predetermined time; S5: driving the measuring head to move upward until it is separated from the adhesive plate, obtaining a tensile force reading at the moment when the measuring head is separated from the adhesive plate, and obtaining an initial bonding force of the adhesive; S6: Repeat steps S4 to S5 to measure the tensile force readings at the moment when the measuring head is separated from the adhesive plate for multiple times to obtain the continuous bonding force of the adhesive.

[0008] As one of the preferred embodiments of the present invention, a horizontal slide rail is provided at the lower side of the glue placement plate, one end of the horizontal slide rail is located at the lower side of the glue injection part, and the other end of the horizontal slide rail is located at the lower side of the measurement part; When executing step S1, the glue placement plate moves along the horizontal slide rail to one end close to the glue injection part; When executing step S3, the glue plate moves along the horizontal slide rail to an end close to the measuring part.

[0009] As one of the preferred embodiments of the present invention, the glue injection part is arranged on the second horizontal slide rail, and the glue injection part is provided with a functional probe; When executing step S1, after the glue plate is displaced to the lower side of the glue injection part, the position of the glue plate is obtained through the functional probe, and the glue plate is displaced on the horizontal slide rail and the glue injection part slides on the second horizontal slide rail, so that the glue plate is located directly below the glue injection cylinder of the glue injection part.

[0010] As one of the preferred embodiments of the present invention, a vertical slide rail is provided on the second horizontal slide rail for facilitating the glue injection part to slide up and down; When executing step S2, it specifically includes: S21: Obtaining adhesive density and a predetermined dispensing amount, generating a predetermined dispensing pressure and a first predetermined dispensing time of the dispensing machine; S22: driving the glue injection part to slide on the vertical slide rail until the lower end of the glue injection cylinder contacts the glue placement plate; S23: The glue dispensing machine works at a predetermined glue injection pressure for a first predetermined time, and dispenses a predetermined amount of adhesive onto the glue placement plate through the glue injection cylinder.

[0011] As one of the preferred embodiments of the present invention, when executing step S3, after the glue plate is displaced to the lower side of the glue injection part, the glue plate is driven to displace on the horizontal slide rail so that the glue plate is located directly below the glue injection cylinder of the glue injection part.

[0012] As one of the preferred embodiments of the present invention, the lower side of the glue plate is arranged on the horizontal slide rail through a glue seat, and an adjusting foot is arranged between the glue plate and the glue seat; Before executing step S4, the glue plate is adjusted to be parallel to the measuring head by a plurality of adjusting feet.

[0013] As one of the preferred embodiments of the present invention, a sensor for obtaining the tension at the lower end of the measuring head is provided on the measuring table on the upper side of the measuring head; When executing step S4, the measuring head is driven to move downward until it contacts the adhesive plate, and the measuring head is driven to press the adhesive plate until the reading on the sensor reaches a predetermined pressure value, which lasts for a second predetermined time.

[0014] As one of the preferred embodiments of the present invention, before executing step S4, the reading on the sensor before the measuring head moves downward is reset to zero; When executing step S4, the reading on the sensor is a negative value, and the absolute value of the reading is equal to the predetermined pressure value, then the measuring head presses the rubber plate with the predetermined pressure.

[0015] As one of the preferred embodiments of the present invention, when executing step S5, the measuring head is driven to move upward until it is separated from the adhesive plate, and the sensor reading is obtained at the moment when the measuring head is separated from the adhesive plate to obtain the initial bonding force of the adhesive.

[0016] As one of the preferred embodiments of the present invention, when executing step S6, steps S4 to S5 are repeatedly executed until the tensile force reading at the moment when the measuring head is separated from the adhesive plate is less than a predetermined measurement value, thereby obtaining the continuous bonding force of the adhesive and the duration of the continuous bonding force.

[0017] The beneficial effects of the method for accurately measuring the adhesive force of paper cigarette materials of the present invention are: accurate dispensing and obtaining a stable amount of adhesive dispensed, and accurately completing the measurement of the adhesive force by moving the measuring head up and down, contacting and separating from the adhesive on the adhesive plate, and effectively measuring the initial adhesive force and continuous adhesive force of the adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic flow chart of a method for accurately measuring the adhesion of paper cigarette materials. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention, which further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of modules and structures set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0021] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0022] Technologies, methods, and systems known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and systems should be considered part of the authorization specification.

[0023] Embodiment 1: Figure 1 The above is only one embodiment of the present invention, a method for accurately measuring the adhesion of paper cigarette materials, comprising the following steps: S1: Move the glue placement plate to the lower side of the glue injection part so that the glue placement plate is located directly below the glue injection cylinder of the glue injection part; Here, the glue plate is displaced to the lower side of the glue injection part, and after the position correction and alignment, the glue plate is just located under the glue injection cylinder of the glue injection part. At this time, after the glue injection cylinder descends, the adhesive in the glue injection cylinder can be stably dispensed to the center of the glue plate; This step is equivalent to determining the dispensing position.

[0024] S2: The glue dispensing machine behind the glue injection cylinder works for a first predetermined time, and a predetermined amount of adhesive is dispensed onto the glue placement plate through the glue injection cylinder; Here, the upper end of the glue injection cylinder is connected to a glue dispenser through a glue injection tube, and the glue dispenser is an MS-1 ECO glue dispenser; here, the MS-1 ECO glue dispenser squeezes the adhesive into the glue injection cylinder through the glue injection tube by pressure injection, and glues the adhesive from the lower end of the glue injection cylinder to the glue placement plate; In order to quickly and accurately dispense the glue, in this application, the MS-1 ECO glue dispenser is used, and the predetermined amount of adhesive is dispensed onto the glue plate by controlling the pressure time. For example, each time the glue is dispensed, the glue dispenser works at a predetermined pressure of 0.2MPa for 0.26 seconds to dispense the predetermined amount of adhesive onto the glue plate. In this way, the glue dispensing amount is controllable and the same each time; This step is equivalent to determining the dispensing amount.

[0025] S3: moving the glue plate to the lower side of the measuring part so that the glue plate is located directly below the measuring head of the measuring part; After the dispensing is completed, the glue plate is moved to the lower side of the measuring part. After the position correction and alignment, the glue plate is just under the measuring head of the measuring part. At this time, after the measuring part is lowered, the adhesive in the middle of the glue plate can be measured for adhesion. This step is equivalent to determining the measurement position.

[0026] S4: driving the measuring head to move downward until it contacts the glue plate, and driving the measuring head to press the glue plate with a predetermined pressure for a second predetermined time; After determining the measuring position, the measuring head needs to be driven to move downward until it contacts the adhesive plate. At this time, the adhesive is adhered between the measuring head and the adhesive plate. The measuring head is driven to press the adhesive plate with a predetermined pressure for a second predetermined time, so that the adhesive between the measuring head and the adhesive plate is fully adhered. This step is equivalent to: performing adhesive bonding; S5: driving the measuring head to move upward until it is separated from the adhesive plate, obtaining a tensile force reading at the moment when the measuring head is separated from the adhesive plate, and obtaining an initial bonding force of the adhesive; After the adhesive between the measuring head and the adhesive plate is fully bonded, the adhesive bonding strength can be measured. The measuring head is driven upward. The moment the measuring head is separated from the adhesive plate, the tensile force applied to the measuring head is the initial bonding strength of the adhesive.

[0027] This step is quite far: obtaining initial adhesion (initial adhesion).

[0028] S6: Repeat steps S4 to S5 to measure the tensile force readings at the moment when the measuring head is separated from the adhesive plate for multiple times to obtain the continuous bonding force of the adhesive.

[0029] After measuring the initial bonding strength, the measuring head has been separated from the adhesive plate and suspended at a certain height. At this time, the measuring head is pressed down again for a certain period of time and then lifted and peeled off. The operations of steps S4 to S5 are repeated multiple times to obtain the continuous bonding strength (maintaining adhesion) of the adhesive.

[0030] It should be noted that when executing step S6, steps S4 to S5 are repeated until the tensile force reading at the moment the measuring head is separated from the adhesive plate is less than the predetermined measurement value, and the continuous adhesion force of the adhesive and the maintenance time of the continuous adhesion force are obtained, that is, a curve showing that the adhesion force of the adhesive decreases with the number of peeling times, and the number of peeling times for the adhesive to maintain the standard adhesion force are obtained.

[0031] This step goes quite far: obtaining sustained adhesion (staying adhesion).

[0032] The invention discloses a method for accurately measuring the adhesive force of paper cigarette materials, which can accurately dispense glue and obtain a stable dispensed amount of adhesive, and accurately complete the measurement of the adhesive force by moving a measuring head up and down, contacting and separating from the adhesive on a glue plate, and can effectively measure the initial adhesive force and continuous adhesive force of the adhesive, with high experimental repeatability and accurate measurement data.

[0033] Embodiment 2: Still as Figure 1 The figure is only one of the embodiments of the present invention. Based on the first embodiment, in a method for accurately measuring the adhesion of a paper cigarette material of the present invention, a sensor for obtaining the tension at the lower end of the measuring head is provided on the measuring table on the upper side of the measuring head; When executing step S4, the measuring head is driven to move downward until it contacts the adhesive plate, and the measuring head is driven to press the adhesive plate until the reading on the sensor reaches a predetermined pressure value, which lasts for a second predetermined time.

[0034] Then, before executing step S4, the reading on the sensor before the measuring head moves downward is reset to zero; When executing step S4, the reading on the sensor is a negative value, and the absolute value of the reading is equal to the predetermined pressure value, then the measuring head presses the rubber plate with the predetermined pressure.

[0035] In addition, when executing step S5, the measuring head is driven to move upward until it is separated from the adhesive plate, and the sensor reading at the moment when the measuring head is separated from the adhesive plate is obtained to obtain the initial bonding force of the adhesive.

[0036] Embodiment 3: Still as Figure 1 The figure is only one of the embodiments of the present invention. Based on any of the above embodiments, in a method for accurately measuring the adhesion of paper cigarette materials of the present invention, a horizontal slide rail is arranged at the lower side of the glue plate, one end of the horizontal slide rail is located at the lower side of the glue injection part, and the other end of the horizontal slide rail is located at the lower side of the measuring part; When executing step S1, the glue placement plate moves along the horizontal slide rail to one end close to the glue injection part; When executing step S3, the glue plate moves along the horizontal slide rail to an end close to the measuring part.

[0037] That is to say, the glue plate slides to the glue dispensing position, the specified adhesive is dispensed onto the glue plate, and then the glue plate slides along the horizontal slide rail to the lower side of the measuring part. At this time, it is convenient for the measuring part to measure the adhesion of the adhesive on the glue plate, and the process of glue dispensing, transportation and measurement can be completed quickly to ensure that the adhesive is less affected by the outside world.

[0038] In the present invention, the glue injection part is arranged on the second horizontal slide rail, and the glue injection part is provided with a functional probe; the second horizontal slide rail is arranged vertically with the horizontal slide rail; When executing step S1, after the glue plate is displaced to the lower side of the glue injection part, the position of the glue plate is obtained through the functional probe, and the glue plate is displaced on the horizontal slide rail and the glue injection part slides on the second horizontal slide rail, so that the glue plate is located directly below the glue injection cylinder of the glue injection part.

[0039] In the present invention, a vertical slide rail is provided on the second horizontal slide rail for facilitating the glue injection part to slide up and down; When executing step S2, it specifically includes: S21: Obtaining adhesive density and a predetermined dispensing amount, generating a predetermined dispensing pressure and a first predetermined dispensing time of the dispensing machine; S22: driving the glue injection part to slide on the vertical slide rail until the lower end of the glue injection cylinder contacts the glue placement plate; S23: The glue dispensing machine works at a predetermined glue injection pressure for a first predetermined time, and dispenses a predetermined amount of adhesive onto the glue placement plate through the glue injection cylinder.

[0040] In the present invention, when executing step S3, after the glue placement plate is displaced to the lower side of the glue injection part, the glue placement plate is driven to displace on the horizontal slide rail so that the glue placement plate is located directly below the glue injection cylinder of the glue injection part.

[0041] In the present invention, the lower side of the glue plate is arranged on the horizontal slide rail through the glue seat, and an adjusting foot is arranged between the glue plate and the glue seat; Before executing step S4, the glue plate is adjusted to be parallel to the measuring head by a plurality of adjusting feet.

[0042] The invention discloses a method for accurately measuring the adhesive force of paper cigarette materials, which can accurately dispense glue and obtain a stable dispensed amount of adhesive, and accurately complete the measurement of the adhesive force by moving a measuring head up and down, contacting and separating from the adhesive on a glue plate, and can effectively measure the initial adhesive force and continuous adhesive force of the adhesive, with high experimental repeatability and accurate measurement data.

[0043] The present invention is not limited to the above specific implementations, and the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made to the above implementations based on the technical essence of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for accurately measuring the adhesion of paper cigarette materials, characterized in that: The following steps are involved: S1: Move the glue placement plate to the lower side of the glue injection part so that the glue placement plate is located directly below the glue injection cylinder of the glue injection part; S2: The glue dispensing machine behind the glue injection cylinder works for a first predetermined time, and a predetermined amount of adhesive is dispensed onto the glue placement plate through the glue injection cylinder; S3: moving the glue plate to the lower side of the measuring part so that the glue plate is located directly below the measuring head of the measuring part; S4: driving the measuring head to move downward until it contacts the glue plate, and driving the measuring head to press the glue plate with a predetermined pressure for a second predetermined time; S5: driving the measuring head to move upward until it is separated from the adhesive plate, obtaining a tensile force reading at the moment when the measuring head is separated from the adhesive plate, and obtaining an initial bonding force of the adhesive; S6: Repeat steps S4 to S5 to measure the tensile force readings at the moment when the measuring head is separated from the adhesive plate for multiple times to obtain the continuous bonding force of the adhesive.

2. A method for accurately measuring the adhesion of paper cigarette materials according to claim 1, characterized in that: A horizontal slide rail is arranged at the lower side of the glue placement plate, one end of the horizontal slide rail is located at the lower side of the glue injection part, and the other end of the horizontal slide rail is located at the lower side of the measuring part; When executing step S1, the glue placement plate moves along the horizontal slide rail to one end of the horizontal slide rail close to the glue injection part; When executing step S3, the glue plate is moved along the horizontal slide rail to an end of the horizontal slide rail close to the measuring part.

3. A method for accurately measuring the adhesion of paper cigarette materials according to claim 2, characterized in that: The glue injection part is arranged on the second horizontal slide rail, and the glue injection part is provided with a functional probe; When executing step S1, after the glue plate is displaced to the lower side of the glue injection part, the position of the glue plate is obtained through the functional probe, and the glue plate is displaced on the horizontal slide rail and the glue injection part slides on the second horizontal slide rail, so that the glue plate is located directly below the glue injection cylinder of the glue injection part.

4. A method for accurately measuring the adhesion of paper cigarette materials according to claim 3, characterized in that: The second horizontal slide rail is provided with a vertical slide rail for facilitating the glue injection part to slide up and down; When executing step S2, it specifically includes: S21: Obtaining adhesive density and a predetermined dispensing amount, generating a predetermined dispensing pressure and a first predetermined dispensing time of the dispensing machine; S22: driving the glue injection part to slide on the vertical slide rail until the lower end of the glue injection cylinder contacts the glue placement plate; S23: The glue dispensing machine works at a predetermined glue injection pressure for a first predetermined time, and dispenses a predetermined amount of adhesive onto the glue placement plate through the glue injection cylinder.

5. A method for accurately measuring the adhesion of paper cigarette materials according to claim 2, characterized in that: When executing step S3, after the glue placement plate is displaced to the lower side of the glue injection part, the glue placement plate is driven to displace on the horizontal slide rail so that the glue placement plate is located directly below the glue injection cylinder of the glue injection part.

6. A method for accurately measuring the adhesion of paper cigarette materials according to claim 1, characterized in that: The lower side of the glue plate is arranged on the horizontal slide rail through the glue seat, and an adjusting foot is arranged between the glue plate and the glue seat; Before executing step S4, the glue plate is adjusted to be parallel to the measuring head by a plurality of adjusting feet.

7. A method for accurately measuring the adhesion of paper cigarette materials according to claim 1, characterized in that: A sensor for obtaining the tension at the lower end of the measuring head is provided on the measuring table on the upper side of the measuring head; When executing step S4, the measuring head is driven to move downward until it contacts the adhesive plate, and the measuring head is driven to press the adhesive plate until the reading on the sensor reaches a predetermined pressure value, which lasts for a second predetermined time.

8. A method for accurately measuring the adhesion of paper cigarette materials according to claim 7, characterized in that: Before executing step S4, the reading on the sensor before the measuring head moves downward is reset to zero; When executing step S4, if the reading on the sensor is a negative value and the absolute value of the reading is equal to the predetermined pressure value, the measuring head presses the rubber plate with the predetermined pressure.

9. A method for accurately measuring the adhesion of paper cigarette materials according to claim 7, characterized in that: When executing step S5, the measuring head is driven to move upward until it is separated from the adhesive plate, and the sensor reading at the moment when the measuring head is separated from the adhesive plate is obtained to obtain the initial bonding force of the adhesive.

10. A method for accurately measuring the adhesion of paper cigarette materials according to claim 7, characterized in that: When executing step S6, steps S4 to S5 are repeatedly executed until the tensile force reading at the moment when the measuring head is separated from the adhesive plate is less than a predetermined measurement value, and the continuous bonding force of the adhesive and the duration of the continuous bonding force are obtained.

Images