Experimental device for measuring initial viscous force of water-based adhesive for cigarettes

Abstract

The utility model provides an experimental device for measuring the initial viscous force of a water-based adhesive for cigarettes, which is characterized in that an adhesive dispensing mechanism is arranged above the movement path of a movable carrying table and is used for forming an adhesive dispensing station by being matched with the movable carrying table, and adhesive dispensing is carried out on a lower to-be-tested sample fixed on the movable carrying table; the pressure head mechanism is arranged above the movement path of the movable carrying table and is used for being matched with the movable carrying table to form an experiment station, the lower end face of the pressure head mechanism is used for fixing an upper to-be-tested sample, and the pressure head mechanism drives the upper to-be-tested sample to move downwards to be pressed, pasted and separated from a lower to-be-tested sample; the movable carrying platform comprises a carrying platform capable of moving horizontally, and the movable carrying platform is at least switched between a dispensing station and an experiment station; the dispensing calibration mechanism is used for being matched with the dispensing mechanism to calibrate the single-time dispensing amount; the upper computer is connected with the dispensing mechanism, and the movable carrying table, the pressure head mechanism and the dispensing amount calibration mechanism are used for outputting control instructions and collecting detection data. The scheme has the advantages of being convenient to operate, stable in process and clear in parameter.

Description

Technical Field

[0001] This utility model relates to the field of testing technology in the tobacco industry, specifically to an experimental device for measuring the initial tack of water-based adhesives for tobacco. Background Technology

[0002] The adhesion ability of water-based adhesives for tobacco to packaging materials is divided into initial tack and holding power. Initial tack is an important indicator for measuring the adhesion between two surfaces and has a significant impact on the machine adaptability of water-based adhesives for tobacco.

[0003] Currently, the initial tack test of water-based adhesives for tobacco products is mainly conducted manually. The main process involves bonding the packaging materials together with water-based adhesive, and after a set time, pulling the packaging materials apart and measuring the tensile force experienced during the process. The maximum tensile force is the initial tack force.

[0004] The process lacks strict parameter guidance, and due to the many uncertainties inherent in manual operation, it is also prone to inaccurate detection.

[0005] In the research and development of compatibility between water-based adhesives and packaging materials, it is necessary to clarify the specific performance parameters of the initial tack of the water-based adhesive and the packaging material. If a large number of experiments are conducted, manual operation cannot meet the requirements.

[0006] For the reasons mentioned above, it is necessary to develop a semi-automatic device that facilitates the determination of the initial tack of water-based adhesives for tobacco products. This device would reduce the intensity of manual labor and ensure that process parameters can be accurately obtained during the testing process.

[0007] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0008] The purpose of this invention is to address the shortcomings of existing technologies by providing a convenient, stable, and parameter-defined experimental device for measuring the initial tack of water-based adhesives for tobacco products.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is: an experimental device for measuring the initial tack of water-based adhesive for tobacco, comprising a host computer, a base, and a dispensing mechanism, a moving platform, a pressure head mechanism, and a dispensing quantity calibration mechanism based on the base.

[0010] The dispensing mechanism is located above the movement path of the moving platform and is used to cooperate with the moving platform to form a dispensing station to dispense glue onto the lower test sample fixed on the moving platform.

[0011] The pressure head mechanism is located above the movement path of the moving platform and is used to cooperate with the moving platform to form an experimental station. The lower end face of the pressure head mechanism is used to fix the upper test sample. The pressure head mechanism drives the upper test sample to move down and press, stick and separate from the lower test sample.

[0012] The mobile platform includes a horizontally movable platform, which can switch between at least a dispensing station and a testing station.

[0013] The dispensing calibration mechanism is used in conjunction with the dispensing mechanism to calibrate the amount of adhesive dispensed in a single operation;

[0014] The host computer is connected to the dispensing mechanism, the moving platform, the pressure head mechanism, and the dispensing volume calibration mechanism to output control commands and collect detection data.

[0015] Based on the above, the movable platform moves in a straight line, and the dispensing mechanism and the pressure head mechanism are arranged side by side along the moving path of the movable platform.

[0016] Based on the above, the dispensing structure includes a dispensing machine, a hose, a dispensing syringe, a syringe clamping mechanism, and a dispensing lifting mechanism fixed on the base;

[0017] The dispensing lifting mechanism is mounted on the base, the syringe clamping mechanism is located on the slider of the dispensing lifting mechanism, the dispensing syringe is installed in the syringe clamping mechanism, the dispensing machine is connected to the dispensing syringe through a hose, and the dispensing syringe outlet is set downwards.

[0018] Based on the above, the pressure head mechanism includes a pressure head lifting mechanism, a pressure head and tension / compression sensors, a displacement sensor and a speed sensor. The pressure head lifting mechanism is mounted on a base, and the pressure head is fixed on the slider of the pressure head lifting mechanism. The tension / compression sensors are set in the connection structure of the pressure head and are used to detect the tension and compression forces acting on the pressure head. The displacement sensor is used to detect the displacement of the pressure head, and the speed sensor is used to detect the downward pressing speed of the pressure head.

[0019] Based on the above, the lower end face of the pressure head is a plane, and the sample to be tested is fixed on the pressure head by means of adhesive or negative pressure adsorption.

[0020] Based on the above, the platform of the moving stage is driven by a translation mechanism to perform horizontal reciprocating motion. The platform surface is a plane, and the test sample is fixed on the platform surface by adhesive or negative pressure adsorption.

[0021] Based on the above, the dispensing volume calibration mechanism includes a weighing component and a windproof cover, and the sample to be calibrated is transferred between the dispensing volume calibration mechanism and the dispensing mechanism by a robotic arm or manually.

[0022] This utility model has substantial features and progress compared to the prior art. Specifically, this utility model has the following advantages:

[0023] 1. It fills the gap in the lack of dedicated experimental equipment for the initial tack test of water-based adhesives, making the entire process of initial tack test of water-based adhesives more stable, the data can be accurately recorded, and the amount of data obtained is broader, providing a data foundation for subsequent research and development.

[0024] 2. It replaces manual control of glue dispensing volume, and the high integration of glue dispensing action, pressure separation process, and detection functions greatly improves the convenience of the entire experiment. Experimenters only need to perform the loading and unloading operations, which can also be completed by a robotic arm, achieving full substitution.

[0025] 3. The amount of adhesive applied in each experiment is calibrated to ensure high accuracy, thereby making the evaluation of initial tack more convincing.

[0026] 4. By collecting and limiting the omnidirectional motion parameters of the pressure head mechanism, various influencing factors affecting the initial tack are digitized, providing a basis for the accuracy of initial tack measurement. Attached Figure Description

[0027] Figure 1 This is one of the structural schematic diagrams of the experimental device for measuring the initial tack of water-based adhesives in tobacco products according to this utility model.

[0028] Figure 2 This is the second schematic diagram of the experimental device for measuring the initial tack of water-based adhesive in tobacco products according to this utility model.

[0029] Figure 3 This is the third schematic diagram of the experimental device for measuring the initial tack of water-based adhesive in tobacco products according to this utility model.

[0030] In the diagram: 100. Host computer; 200. Base; 300. Dispensing mechanism; 301. Dispensing machine; 302. Tube; 303. Dispensing syringe; 304. Syringe clamping mechanism; 305. Dispensing lifting mechanism; 400. Moving platform; 401. Platform; 402. Translation mechanism; 500. Pressure head mechanism; 501. Pressure head lifting mechanism; 502. Pressure head; 600. Dispensing volume calibration mechanism; 601. Weighing component; 602. Windproof cover; 700. Lower test sample; 800. Upper test sample. Detailed Implementation

[0031] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0032] like Figures 1-3As shown, an experimental device for measuring the initial tack of water-based adhesive for tobacco includes a host computer 100, a base 200, and a dispensing mechanism 300, a movable stage 400, a pressure head mechanism 500, and a dispensing quantity calibration mechanism 600 set based on the base 200.

[0033] The dispensing mechanism 300 is positioned above the movement path of the movable platform 400 and is used to cooperate with the movable platform 400 to form a dispensing station to dispense adhesive onto the lower test sample 700 fixed on the movable platform 400.

[0034] Specifically, in this embodiment, the dispensing mechanism 300 includes a dispensing machine 301 fixed on the base, a hose 302, a dispensing syringe 303, a syringe clamping mechanism 304, and a dispensing lifting mechanism 305.

[0035] The dispensing lifting mechanism 305 is integrally mounted on the base 200. The syringe clamping mechanism 304 is disposed on the slider of the dispensing lifting mechanism 305. The dispensing syringe 303 is installed in the syringe clamping mechanism 304. The dispensing machine 301 is connected to the dispensing syringe 303 through a flexible tube 302. The dispensing nozzle of the dispensing syringe 303 is oriented downwards. In this embodiment, the dispensing machine is an existing device, and the entire set can be obtained through procurement. Its dispensing syringe 303 has a structure similar to a syringe syringe, and dispensing is driven by pneumatic force, resulting in high accuracy of single dispensing volume.

[0036] The dispensing lifting mechanism 305 can be a linear motor or an electric screw mechanism to drive the dispensing syringe 303 to move up and down with high precision, so as to get closer to the stage surface and dispense glue to the test sample 700 placed on the stage surface.

[0037] The pressure head mechanism 500 is disposed above the movement path of the movable platform 400 and is used to cooperate with the movable platform 400 to form an experimental station. The lower end face of the pressure head mechanism 500 is used to fix the upper test sample 800. The pressure head mechanism 500 drives the upper test sample 800 to move down and press, adhere and separate from the lower test sample 700.

[0038] Specifically, in this embodiment, the pressure head mechanism 500 includes a pressure head lifting mechanism 501, a pressure head 502, a tension / compression sensor, a displacement sensor, and a speed sensor. The pressure head lifting mechanism 501 is mounted on the base 200. The pressure head 502 is fixed to the slider of the pressure head lifting mechanism 501. The tension / compression sensor is located in the connection structure of the pressure head, such as in the connecting rod area shown in the figure, and is used to detect the tension and compression force on the pressure head. The displacement sensor is used to detect the displacement of the pressure head, and its installation position is relatively flexible; it can be installed on the pressure head lifting mechanism 501 or on the base, without limitation. The speed sensor is used to detect the downward pressing speed of the pressure head. This sensor is mainly installed on the output shaft of the drive motor of the pressure head lifting mechanism 501, converting the rotational speed into linear speed.

[0039] The pressure head lifting mechanism 501 uses a high-precision linear motor or electric lead screw mechanism, which has higher motion accuracy requirements than other motion mechanisms in order to obtain motion parameters more accurately.

[0040] The lower end face of the pressure head 502 is flat, and the pressure head 502 fixes the test sample 800 on it by means of adhesive or negative pressure adsorption.

[0041] The movable stage 400 includes a horizontally movable stage 401, which can switch between at least a dispensing station and a testing station. In this embodiment, the movable stage 400 moves in a straight line, and the dispensing mechanism and the pressure head mechanism are arranged side by side along the movement path of the movable stage. The stage 401 of the movable stage is driven by a translation mechanism 402 to perform horizontal reciprocating motion. The surface of the stage 401 is flat, and the test sample 700 is fixed on the surface of the stage 401 by adhesive or negative pressure adsorption.

[0042] The translation mechanism 402 of the movable platform 400 can be a linear motor or an electric lead screw mechanism to complete linear reciprocating motion.

[0043] The dispensing calibration mechanism 600 is used in conjunction with the dispensing mechanism 300 to calibrate the amount of dispensing in a single operation. Specifically, in this embodiment, the dispensing calibration mechanism 600 includes a weighing component 601 and a windproof cover 602. The dispensing calibration mechanism 600 and the dispensing mechanism 300 transfer the sample to be calibrated via a robotic arm or manual means.

[0044] The dispensing volume calibration mechanism 600 can exist independently of the dispensing mechanism 300, the base plate 200 and the pressure head mechanism 500. It can be placed on one side as an independent component. The whole machine can be purchased, but the accuracy is required to be at least 0.1mg.

[0045] The host computer 100 is connected to the dispensing mechanism 300, the moving platform 400, the pressure head mechanism 500, and the dispensing volume calibration mechanism 600 for outputting control commands and collecting detection data.

[0046] The host computer acts as a main control unit, with an internal processing system. The output commands can control the dispensing mechanism 300, the moving platform 400, and the pressure head mechanism 500 to complete the dispensing, pressing, and pulling separation actions. The collected signals include calibration data, various motion data of the pressure head mechanism 500, and data reflecting the initial adhesion such as tension and pressure.

[0047] The initial tack strength was measured using the following method:

[0048] Step 1) Turn on the power, inject the water-based adhesive into the dispensing machine, and calibrate the dispensing amount per batch through the dispensing amount calibration mechanism to control the dispensing amount per batch within the set weight range.

[0049] The specific calibration process is as follows: An un-dispensed sample is placed in the dispensing volume calibration mechanism for weighing, then removed and placed under the dispensing machine for dispensing. After dispensing, the sample with glue is placed in the dispensing volume calibration mechanism for weighing again. The difference between the two weighings is the weight of a single dispensing operation. In this embodiment, the weight of the dispensing volume is controlled at 9.5. 0.5mg.

[0050] Step 2) Use double-sided tape to fix the front side of the paper cigarette material to be tested to the table surface of the platform in a centered position, forming the lower test sample 700; use double-sided tape to fix the back side of the paper cigarette material to be tested to the lower end of the pressure head mechanism in a centered position, forming the upper test sample 800.

[0051] In other embodiments, instead of using double-sided tape for fixation, single-sided tape can be used to adhere the paper cigarette material, and then it can be fixed by negative pressure adsorption.

[0052] Step 3) Drive the moving stage 400 to the dispensing station below the dispensing mechanism 300, and the dispensing mechanism 300 dispenses adhesive onto the surface of the sample to be tested 700.

[0053] Step 4) Drive the moving platform 400 to the experimental position below the pressure head mechanism 500, set the motion parameters of the pressure head mechanism 500, as well as the parameter information of the holding pressure, holding time and separation time after the movement is in place. The set parameters include the displacement distance and walking speed in the initial state, and the starting pressure, holding pressure and holding time in the pressing process. In this embodiment, the initial distance is controlled to be 50mm, the speed before the test is 400mm / min, the starting force is 0.1N, the holding pressure required for the test is 30N, the holding time is 30s, the speed during the test is 400mm / min, and then the pressure head mechanism 500 is started to move downward, so that the front sides of the upper test sample 800 and the lower test sample 700 are pasted together, and the pressure head mechanism is raised at the separation time to separate the upper test sample and the lower test sample from each other.

[0054] Step 5) Record the stress conditions during the separation process of the upper and lower test samples, and take the maximum stress value as the initial adhesion force.

[0055] For each water-based adhesive sample for tobacco, at least three sets of tests should be performed, and the arithmetic mean of multiple tests should be taken as the test result of a water-based adhesive sample for tobacco. The test accuracy should be at least 0.001N.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A device for measuring the initial tack of a water-based adhesive for cigarettes, characterized by: It includes a host computer, a base, and a dispensing mechanism, a moving stage, a pressure head mechanism, and a dispensing volume calibration mechanism based on the base; The dispensing mechanism is located above the movement path of the moving platform and is used to cooperate with the moving platform to form a dispensing station to dispense glue onto the lower test sample fixed on the moving platform. The pressure head mechanism is located above the movement path of the moving platform and is used to cooperate with the moving platform to form an experimental station. The lower end face of the pressure head mechanism is used to fix the upper test sample. The pressure head mechanism drives the upper test sample to move down and press, stick and separate from the lower test sample. The mobile platform includes a horizontally movable platform, which can switch between at least a dispensing station and a testing station. The dispensing calibration mechanism is used in conjunction with the dispensing mechanism to calibrate the amount of adhesive dispensed in a single operation; The host computer is connected to the dispensing mechanism, the moving platform, the pressure head mechanism, and the dispensing volume calibration mechanism to output control commands and collect detection data.

2. The water-based adhesive initial tack test device for cigarettes according to claim 1, characterized in that: The movable platform moves in a straight line, and the dispensing mechanism and the pressure head mechanism are arranged side by side along the moving path of the movable platform.

3. A water-based adhesive initial tack test device for cigarettes according to claim 1 or 2, characterized in that: The dispensing structure includes a dispensing machine, a hose, a dispensing syringe, a syringe clamping mechanism, and a dispensing lifting mechanism fixed on a base. The dispensing lifting mechanism is mounted on the base, the syringe clamping mechanism is located on the slider of the dispensing lifting mechanism, the dispensing syringe is installed in the syringe clamping mechanism, the dispensing machine is connected to the dispensing syringe through a hose, and the dispensing syringe outlet is set downwards.

4. The experimental apparatus for determining the initial tack of water-based adhesives for tobacco products according to claim 3, characterized in that: The pressure head mechanism includes a pressure head lifting mechanism, a pressure head, a tension / compression sensor, a displacement sensor, and a speed sensor. The pressure head lifting mechanism is mounted on a base. The pressure head is fixed on the slider of the pressure head lifting mechanism. The tension / compression sensor is located in the connection structure of the pressure head and is used to detect the tension and compression force on the pressure head. The displacement sensor is used to detect the displacement of the pressure head, and the speed sensor is used to detect the downward pressing speed of the pressure head.

5. The experimental apparatus for determining the initial tack of water-based adhesives for tobacco products according to claim 4, characterized in that: The lower end face of the pressure head is flat, and the sample to be tested is fixed on the pressure head by adhesive or negative pressure adsorption.

6. A water-based adhesive initial tack test device for cigarettes according to claim 4 or 5, characterized in that: The mobile platform is driven by a translation mechanism to perform horizontal reciprocating motion. The platform surface is flat, and the test sample is fixed on the platform surface by adhesive or negative pressure adsorption.

7. A water-based adhesive initial tack test device for cigarettes according to claim 1 or 2 or 4 or 5, characterized in that: The dispensing volume calibration mechanism includes a weighing component and a windproof cover. The sample to be calibrated is transferred between the dispensing volume calibration mechanism and the dispensing mechanism by a robotic arm or manually.

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