A rotary cigarette box sealing test standard part

Abstract

The present invention discloses a rotary cigarette box sealing test standard part, comprising: a base (1), comprising a support part (11) and an extension part (12), the base (1) having a first airflow channel (13) inside, and a first through hole (14) on the side wall of the base (1) connected to the first airflow channel (13); a cap (2), having a cavity (21) inside, and a second through hole (22) on the side wall of the cap (2) penetrating the side wall of the cap (2) and connected to the cavity (21); the extension part (12) is located in the cavity (21), the cap (2) can rotate relative to the base (1), and the first through hole (14) and the second through hole (22) completely overlap, partially overlap or completely do not overlap. The present invention designs a rotary cigarette box sealing test standard part, which is used for the rapid calibration and association of detection data of two different principle equipment, avoiding the problem that the sealing degree of cigarette boxes is difficult to compare under different test methods.

Description

Technical Field

[0001] The invention belongs to the field of cigarette packaging boxes, and in particular relates to a rotary cigarette box sealing test standard part. Background Art

[0002] The sealing degree of cigarette boxes is closely related to the moisture content of cigarettes, mildew prevention, original flavor preservation, storage life, etc. Therefore, controlling the sealing degree of cigarette boxes is of great significance to maintaining the quality of cigarettes. The main reason for the loose sealing of cigarette boxes is that the packaging machine is caused by film wrinkles, looseness, bubbles in hot stamping, loose and flat cutting surfaces, improper use of BOPP film specifications, etc. in the production process. Cigarette production workers have proposed corresponding adjustment methods and improvement measures for different packaging machine models based on the above reasons, which can effectively improve the sealing degree of small boxes. At the same time, they also proposed the quality control limit of the sealing degree of cigarette boxes.

[0003] Effectively measuring the sealing degree of cigarette boxes is the basis for carrying out related work. Commonly used test methods for measuring the sealing degree of cigarette boxes include inflation method and negative pressure extraction method: the inflation method is to fill a pre-punched cigarette box with a stable air pressure airflow, and the airflow when the inflation flow of the small box is balanced is the sealing degree of the cigarette box; the negative pressure extraction method places the pre-punched cigarette package in a sealed container with constant airflow and vacuum, and the pre-punched holes are connected to the atmosphere. During the vacuuming process of the container where the cigarette package is placed, the small box expands due to the pressure difference. When the internal and external pressure difference of the small box is balanced with the measuring chamber, it is the sealing degree of the cigarette box.

[0004] At present, the standard for the method of measuring the sealing degree of cigarette boxes by the inflation method issued by the State Tobacco Monopoly Administration has been abolished, and a new determination method, the negative pressure extraction-water immersion method, has been introduced. However, most cigarette industrial enterprises still use the inflation method to measure the sealing degree of cigarette boxes. Repurchasing the negative pressure extraction method to measure the sealing degree of cigarette boxes will inevitably cause a waste of equipment resources. On the other hand, with the alternation of the old and new standards, cigarette industrial enterprises have two types of equipment, the inflation method and the negative pressure extraction method, to simultaneously inspect and control the sealing degree of cigarette boxes. It is difficult to compare the sealing degree of cigarette boxes under different test methods. In addition, even if the same equipment under the same test method is used for the same type of cigarette box test, the measurement data has a large error, and the comparability between the data is poor. At the same time, when re-inspecting the sealing degree samples of cigarette small boxes, the test data cannot correspond well due to the damage to the seal of the small box.

[0005] In order to solve the above problems, the present invention is proposed. Summary of the invention

[0006] The present invention provides a rotary cigarette box sealing test standard component, which comprises:

[0007] A base 1, comprising a supporting portion 11 and an extending portion 12, wherein the base 1 has a first airflow channel 13 inside, and a side wall of the base 1 has a first through hole 14 connected to the first airflow channel 13;

[0008] The cap 2 has a cavity 21 inside, and the side wall of the cap 2 has a second through hole 22 that penetrates through the side wall of the cap 2 and connects to the cavity 21;

[0009] The extension 12 is located in the cavity 21, and the cap 2 can rotate relative to the base 1, so that the first through hole 14 and the second through hole 22 completely overlap, partially overlap, or do not overlap at all. By rotating the cap 2 so that it rotates relative to the base 1, the first through hole 14 and the second through hole 22 completely overlap, partially overlap, or do not overlap at all, and the cross-sectional sizes of the first through hole 14 and the second through hole 22 are further adjusted, thereby adjusting the air flow through the first through hole 14 and the second through hole 22.

[0010] Preferably, the first airflow channel 13 passes through the support portion 11 and extends toward the protruding portion 12, and the first airflow channel 13 does not pass through the protruding portion 12. In other words, the first airflow channel 13 extends axially from the bottom of the base 1 toward the middle of the base 1, and the first airflow channel 13 does not pass through the base 1.

[0011] Preferably, it further comprises a bottom pad 3 , wherein the center of the bottom pad 3 has a second air flow channel 31 axially penetrating the bottom pad 3 .

[0012] Preferably, the second air flow channel 31, the first air flow channel 13, the first through hole 14 and the second through hole 22 are gas-connected in sequence to form a gas flow path.

[0013] Preferably, an annular groove 15 is formed on the outer wall of the extending portion 12 , and a sealing ring 16 is accommodated in the annular groove 15 .

[0014] Preferably, there are multiple first through holes 14 and multiple second through holes 22, and the number of the first through holes 14 is the same as the number of the second through holes 22; the multiple first through holes 14 are evenly distributed on the side wall of the base 1 along the circumferential direction, and the multiple second through holes 22 are evenly distributed on the side wall of the cap 2 along the circumferential direction.

[0015] Preferably, the base 1 and the cap 2 have fixing bolts 4 at the top. The fixing bolts 4 are used to fix the base 1 and the cap 2 when the base 1 and the cap 2 are not rotated. During use, the fixing bolts 4 are first loosened to allow the base 1 and the cap 2 to rotate relative to each other. When they are rotated to a suitable position, the fixing bolts 4 are tightened to fix the base 1 and the cap 2 to each other, which is convenient for measurement.

[0016] Preferably, the side wall where the base 1 and the cap 2 are in contact has a scale mark, and when the base 1 and the cap 2 are rotated, the rotation amount can be recorded according to the scale mark, so as to quantify the overlapping area of ​​the first through hole 14 and the second through hole 22. The side wall where the base 1 and the cap 2 are in contact has a scale mark 0-10, and when the rotation scale mark is 10, the first through hole 14 and the second through hole 22 completely overlap, and the gas flux is maximum; when the rotation scale mark is 0, the first through hole 14 and the second through hole 22 do not overlap at all, and no gas passes.

[0017] Preferably, the top of the first airflow channel 13 is trumpet-shaped, with the trumpet mouth facing the top of the base 1. The shape of the trumpet mouth facilitates the air from the first airflow channel 13 to pass into the plurality of first through holes 14.

[0018] Preferably, the axial length of the protruding portion 12 is less than or equal to the axial length of the cavity 21 .

[0019] The rotary cigarette box sealing test standard part of the present invention is suitable for cigarette box sealing measuring instruments using negative pressure suction method and inflation method.

[0020] The rotary cigarette box sealing test standard part of the present invention is rigid and will not be deformed after being tested by multiple inflation methods and negative pressure suction methods.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention designs a rotary cigarette box sealing test standard part, which is used for the rapid calibration and association of test data of two different principle equipments. Specifically, the standard part of the present invention associates the standard method for measuring the sealing degree of cigarette boxes by the inflation method with the standard method for measuring the sealing degree of cigarette boxes by the negative pressure extraction method, thus avoiding the waste of equipment resources caused by the purchase of a new negative pressure extraction method cigarette box sealing measurement instrument. It avoids the problem that it is difficult to compare the sealing degree of cigarette boxes under different test methods. And even if the same equipment under the same test method is used for testing the same cigarette box, the measurement data will have large errors and poor comparability between data.

[0023] 2. The standard part of the present invention rotates the cap 2 relative to the base 1, so that the first through hole 14 and the second through hole 22 are completely overlapped, partially overlapped, or not overlapped at all, and further adjusts the cross-sectional size of the first through hole 14 and the second through hole 22, thereby adjusting the air flow passing through the first through hole 14 and the second through hole 22 to indicate different sealing conditions.

[0024] 3. In a preferred embodiment of the present invention, the side wall of the contact portion between the base 1 and the cap 2 has a scale mark, and when the base 1 and the cap 2 are rotated, the rotation amount can be recorded according to the scale mark, so as to quantify the overlapping area of ​​the first through hole 14 and the second through hole 22. The side wall of the contact portion between the base 1 and the cap 2 has a scale mark of 0-10, and when the rotation scale mark is 10, the first through hole 14 and the second through hole 22 completely overlap; when the rotation scale mark is 0, the first through hole 14 and the second through hole 22 do not overlap at all.

[0025] 4. In a preferred embodiment of the present invention, the base 1 and the cap 2 have fixing bolts 4 at the top. The fixing bolts 4 are used to fix the base 1 and the cap 2 when the base 1 and the cap 2 are not rotated. During use, the fixing bolts 4 are first loosened to allow the base 1 and the cap 2 to rotate relative to each other. When they are rotated to a suitable position, the fixing bolts 4 are tightened to fix the base 1 and the cap 2 to each other, which is convenient for measurement.

[0026] 5. The rotary cigarette box sealing test standard of the present invention is rigid and will not deform after multiple inflation and negative pressure extraction tests. The calibration component avoids the situation in which the test data cannot correspond well due to damage to the cigarette box sealing when re-inspecting the cigarette box sealing samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the three-dimensional structure of a rotary cigarette box sealing test standard component of the present invention;

[0028] Figure 2 A schematic longitudinal section diagram of the rotary cigarette box sealing test standard component of the present invention before rotation;

[0029] Figure 3 A schematic cross-sectional view of the rotary cigarette box sealing test standard component of the present invention before rotation;

[0030] Figure 4 A schematic longitudinal section diagram of the rotary cigarette box sealing test standard component of the present invention after rotation;

[0031] Figure 5A schematic cross-sectional view of the rotary cigarette box sealing test standard component of the present invention after rotation;

[0032] Figure 6 A schematic longitudinal section diagram of the base 1 in the rotary cigarette box sealing test standard component of the present invention;

[0033] Figure 7 A schematic longitudinal section diagram of a cap 2 in a rotary cigarette box sealing test standard component of the present invention;

[0034] Figure 8 A schematic longitudinal section diagram of the bottom pad 3 in the rotary cigarette box sealing test standard of the present invention;

[0035] Fig. 9 Schematic diagram of the measurement process of negative pressure extraction method;

[0036] Fig.10 Schematic diagram of the measurement process of the inflation method;

[0037] Among them, the names of the figure marks in the figure description are: 1-base, 2-cover cap, 3-bottom pad, 4-fixing bolt, 11-support part, 12-extending part, 13-first air flow channel, 14-first through hole, 15-annular groove, 16-sealing ring, 21-cavity, 22-second through hole, 31-second air flow channel, 111-measuring chamber, 222-ventilation pipe, 333-through hole, 444-ring-mounted suction cup, 555-cigarette box. DETAILED DESCRIPTION

[0038] The rotary cigarette box sealing test standard parts used in the following examples include:

[0039] A base 1 includes a supporting portion 11 and an extending portion 12, wherein the base 1 has a first airflow channel 13 inside, and a first through hole 14 is provided on a side wall of the base 1, which is connected to the first airflow channel 13; a cap 2 includes a cavity 21 inside, and a second through hole 22 is provided on the side wall of the cap 2, which penetrates through the side wall of the cap 2 and is connected to the cavity 21; the extending portion 12 is located in the cavity 21, and the cap 2 can rotate relative to the base 1, and the first through hole 14 and the second through hole 22 completely overlap, partially overlap, or do not overlap at all.

[0040] The first airflow channel 13 penetrates the support portion 11 and extends toward the extension portion 12, and the first airflow channel 13 does not penetrate the extension portion 12. The standard part also includes a bottom pad 3, and the center of the bottom pad 3 has a second airflow channel 31 that axially penetrates the bottom pad 3. The outer wall of the extension portion 12 has two annular grooves 15, and the two annular grooves 15 contain sealing rings 16 respectively. The two annular grooves 15 are respectively located at the top of the extension portion 12 and the bottom of the extension portion 12. There are 8 first through holes 14 and 8 second through holes 22. The base 1 and the cap 2 have fixing bolts 4 at the top. The side wall of the contact between the base 1 and the cap 2 has scale marks 0-10. When the rotation scale mark is 10, the first through hole 14 and the second through hole 22 completely overlap; when the rotation scale mark is 0, the first through hole 14 and the second through hole 22 do not overlap at all. The top of the first airflow channel 13 is trumpet-shaped, and the trumpet mouth faces the top of the base 1.

[0041] Example 1

[0042] The cigarette box sealing degree measuring instrument of the negative pressure suction method was used to test the cigarette box samples 1-4. The instrument model is: PSTNE100 negative pressure suction cigarette box sealing degree tester (Hefei Zhongwo Instrument Technology Co., Ltd.), the suction flow rate is 200mL / min, and the range is 0 to -5.00kPa. Among them, -5.00kPa is also the same as 5.00-kPa.

[0043] The specific test method is: pre-punch a hole in the center of the cigarette box, use the negative pressure suction method to punch holes with a diameter of 0.30 mm on the cigarette box, and then use the annular suction cup 444 to suck the cigarette box 555. The annular suction cup 444 has a through hole 333 in the middle (the through hole 333 is larger than the pre-punched hole diameter of the small box), and the negative pressure suction method (see Fig. 9 ) One end of the through hole 333 is connected to the cigarette box 555, and the other end is connected to the outside atmosphere through the vent pipe 222, and the measuring chamber 111 is isolated from the outside atmosphere. During measurement, the negative pressure exhaust method is used to exhaust the measuring chamber at a constant flow rate of 200mL / min. The air enters the small box from the air inlet through the small hole above the small box, and then flows out from the inside of the small box through the leakage point of the packaging film to the measuring chamber. When the measurement reaches equilibrium, a stable pressure difference is formed inside the measuring chamber with the outside atmosphere, which is the measurement value of the sealing degree.

[0044] The test results are shown in Table 1, and the sealing degree of the cigarette box samples was tested by the negative pressure suction method cigarette box sealing degree measuring instrument and the grade evaluation was performed according to Table 2.

[0045] Table 1 Negative pressure vacuum sealing degree and sealing performance of different cigarette box samples

[0046]

[0047]

[0048] Table 2 Evaluation of sealing level of different packaging specifications

[0049]

[0050] According to the test results and the above evaluation table, it can be seen that the sealing properties of samples 2# and 3# are excellent, and the sealing properties of samples 1# and 4# are good.

[0051] Furthermore, the standard part in this embodiment is used as a test sample, and the measuring chamber is evacuated at a constant flow rate of 200 mL / min. The air enters the interior of the standard part from the bottom of the second air flow channel 31, and then flows out to the measuring chamber through the second through hole 22. The cap 2 is rotated to adjust the overlapping area of ​​the first through hole 13 and the second through hole 22, and the scale marks on the standard part are recorded when the stable pressure difference is 4.5-kPa, 4-kPa, 2.5-kPa, 2-kPa, 1.5-kPa, and 1-kPa (evaluation level node value). The results are: when the stable pressure difference is 4.5-kPa, 4-kPa, 2.5-kPa, 2-kPa, 1.5-kPa, and 1-kPa, the scale marks on the standard part are 1.5, 2.5, 5.5, 6.5, 7.5, and 8.5, respectively.

[0052] Example 2

[0053] Cigarette box samples 1-4 were tested using an inflatable cigarette box sealing tester, the instrument model is: YM-OPT inflatable cigarette pack sealing tester (YM International Technology, South Korea), working pressure 0.5MPa, range 0-1500mL / min.

[0054] The specific test method is as follows: pre-punch a hole in the center of the cigarette box, use the inflation method equipment to punch a hole with a diameter of 0.40 mm on the cigarette box, and then use the annular suction cup 444 to suck the cigarette box 555, and the annular suction cup 444 has a through hole 333 in the middle (the through hole 333 is larger than the pre-punched diameter of the small box), and the inflation method (see Fig.10 ) One end of the through hole 333 is connected to the cigarette box 555, and the other end is inflated under a stable working pressure through the ventilation pipe 222. During measurement, the inflation method is to fill the cigarette box with a stable airflow through the through hole under a stable working pressure. When the airflow of the small box is balanced, the airflow is the sealing degree of the cigarette box.

[0055] The test results are shown in Table 3. The airtightness test of cigarette case samples by the airtightness measuring instrument using the inflation method is evaluated by grades according to Table 4.

[0056] Table 3 Inflation sealing degree and sealing performance of different cigarette box samples

[0057]

[0058] Table 4 Evaluation of sealing level of different packaging specifications

[0059]

[0060] According to the test results and the above evaluation table, it can be seen that the sealing properties of samples 2# and 3# are excellent, and the sealing properties of samples 1# and 4# are good. The test results are consistent with those of Example 1.

[0061] Furthermore, the standard part in the present embodiment is used as a test sample, a stable airflow is filled into the standard part through the second airflow channel 31 under a stable working air pressure of 0.5 MPa, and the cap 2 is rotated to adjust the overlapping area of ​​the first through hole 13 and the second through hole, and the inflation flow rate of the instrument is recorded when the scale marks on the standard part are 1.5, 2.5, 5.5, 6.5, 7.5, and 8.5 respectively. The results are: when the scale markings on the standard parts are 1.5, 2.5, 5.5, 6.5, 7.5, and 8.5, respectively, the inflation flow rates of the instrument are 30mL / min, 50mL / min, 110mL / min, 130mL / min, 150mL / min, and 170mL / min, respectively, which correspond exactly to the node values ​​of the evaluation levels in Table 4, proving that this standard part does indeed associate the sealing indicators of cigarette boxes under the two different test methods, and after verification, it is concluded that the sealing measurement value of the inflation method determined according to the scale markings of the standard parts corresponding to the sealing measurement value of the negative pressure extraction method corresponds to the sealing measurement value measured by the direct inflation method measuring instrument.

[0062] Example 3

[0063] Take two samples, namely soft pack cigarette box sample 5 and cigarette box sample 6.

[0064] The cigarette box sealing degree measuring instrument using the negative pressure vacuum method was used to test the cigarette box sample 5. The detection method was the same as that in Example 1. The test result showed that the sealing degree of the cigarette box sample 5 using the negative pressure vacuum method was 4.25–kPa. Furthermore, the standard part was tested using the method of Example 1. The result showed that when the sealing degree using the negative pressure vacuum method was 4.25–kPa, the scale mark of the standard part was 2, and the sealing performance of the sample was excellent.

[0065] The cigarette box sealing degree measuring instrument using the inflation method was used to test the cigarette box sample 6. The detection method was the same as that in Example 2. The test result showed that the sealing degree of the cigarette box sample 6 using the inflation method was 120 mL / min. Furthermore, the standard part was tested using the method in Example 2. The result showed that when the sealing degree using the inflation method was 120 mL / min, the scale mark of the standard part was 6, and the sealing performance of the sample was medium.

[0066] Since scale mark 2 is smaller than scale mark 6 , it is known that the sealing performance of cigarette box sample 5 is better than that of cigarette box sample 6 .

Claims

1. A rotary cigarette box sealing test standard part, It is characterized in that It includes: A base (1), comprising a supporting portion (11) and an extending portion (12), wherein the base (1) has a first airflow channel (13) inside, and a first through hole (14) is provided on a side wall of the base (1) and is connected to the first airflow channel (13); A cap (2) having a cavity (21) inside, and a second through hole (22) penetrating the side wall of the cap (2) and connected to the cavity (21); The protruding portion (12) is located in the cavity (21), the cap (2) is rotatable relative to the base (1), and the first through hole (14) and the second through hole (22) completely overlap, partially overlap, or completely do not overlap; The first airflow channel (13) passes through the supporting portion (11) and extends toward the extending portion (12), and the first airflow channel (13) does not pass through the extending portion (12); The rotary cigarette box sealing test standard component also includes a base pad (3), and the center of the base pad (3) has a second airflow channel (31) axially penetrating the base pad (3).

2. The standard component according to claim 1, It is characterized in that The second air flow channel (31), the first air flow channel (13), the first through hole (14) and the second through hole (22) are connected in sequence to form a gas flow path.

3. The standard component according to claim 1, It is characterized in that An annular groove (15) is provided on the outer wall of the protruding portion (12), and a sealing ring (16) is accommodated in the annular groove (15).

4. The standard component according to claim 1, It is characterized in that There are a plurality of the first through holes (14) and a plurality of the second through holes (22), and the number of the first through holes (14) and the number of the second through holes (22) are the same; the plurality of the first through holes (14) are evenly distributed along the circumferential direction on the side wall of the base (1), and the plurality of the second through holes (22) are evenly distributed along the circumferential direction on the side wall of the cap (2).

5. The standard component according to claim 1, It is characterized in that The base (1) and the top of the cover cap (2) are provided with fixing bolts (4).

6. The standard component according to claim 1, It is characterized in that The side wall at the contact point between the base (1) and the cover cap (2) is provided with scale markings.

7. The standard component according to claim 1, It is characterized in that The top of the first airflow channel (13) is trumpet-shaped, with the mouth of the trumpet facing the top of the base (1).

8. The standard component according to claim 1, It is characterized in that The axial length of the protruding portion (12) is less than or equal to the axial length of the cavity (21).

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