Coating weight-measuring stamping die cutter mechanism

Abstract

The utility model provides a coating weight measuring stamping die cutter mechanism, relates to the technical field of diaphragm detection, and solves the problem that the measurement error is too large when a coating on-line weight measuring device is calibrated and verified. The cutting die comprises an outer cutting die body and an inner cutting die body, the outer cutting die body and the outer cutting die body are both in a square shape, the bottom face of the outer cutting die body is upwards provided with a containing cavity matched with the inner cutting die body, the depth of the containing cavity is larger than the height of the inner cutting die body, and the size of the inner cutting die body is the same as the size of a beta-ray penetrating diaphragm of a beta-ray surface density measuring instrument. The four outer edges of the inner cutting die are arranged to be inner cutting die fillets, and the four outer edges of the outer cutting die are arranged outside the outer cutting die. The surface density measuring instrument has the beneficial effects that the fitting degree of a weight fitting curve of the surface density measuring instrument is improved, and the measurement error of on-line weight measurement is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm measurement, in particular to a coating weight measuring die knife mechanism. Background Art

[0002] At present, the calibration and verification of coating online weighing instruments rely on the following methods:

[0003] 1. Sampling for actual measurement: Take the film at the marked position, punch out 3 discs from each film area by the equal division method, and weigh them on an electronic balance;

[0004] 2. Machine measurement sampling: static scanning of the diaphragm at the mark to obtain the measured weight;

[0005] 3. Subtract the actual weight from the machine-measured weight. If the difference is less than 2 mg, the calibration is qualified. If it is unqualified, change the K and B values ​​in the fitting function to make the function of the surface density meter more suitable for the actual weight.

[0006] 4. The process of obtaining samples for calibration is the same as above;

[0007] Disadvantages of the existing model:

[0008] Whether it is calibration or verification, the actual film taken during sampling is different in sample size and sample position. The coating weight of the coated film is uneven in the horizontal and vertical directions, which leads to a large error in the generation of the fitting function. Ultimately, there is always a certain error between the measured weight and the actual weight obtained during the normal production online weighing process.

[0009] When calibrating and verifying the β-Ray areal density meter, the machine-measured weight is actually the weight of the part of the membrane that the β-Ray rays pass through, a rectangular area of ​​approximately 40mm*20mm in size and 800mm² in area, which is converted into an area of ​​1540.25mm² to obtain the machine-measured weight; the actual weight is a small disc with an area of ​​1540.25mm² punched out by a manual punch table, and the actual weight is weighed using an electronic balance; not only are the sampling positions different, but the measured sampling areas are also different, so it is inevitable that there will be errors when comparing the two for verification. Utility Model Content

[0010] The utility model aims to solve the problem of excessive measurement error during calibration and verification of an online coating weight measuring device.

[0011] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0012] A coating weight measurement die knife mechanism, characterized in that it comprises an outer knife die and an inner knife die, both of which are square, an accommodating cavity adapted to the inner knife die is opened upward on the bottom surface of the outer knife die, the depth of the accommodating cavity is greater than the height of the inner knife die, the size of the inner knife die is the same as the size of the β-ray radiation penetrating film of a β-Ray surface density measuring instrument, the four outer edges of the inner knife die are set as inner knife die chamfers, the four outer edges of the outer knife die are set as outer knife die outer chamfers, and the four inner edges of the outer knife die are set as outer knife die inner chamfers adapted to the inner knife die chamfers.

[0013] A further improvement is that a circular fixing seat is connected to the upper end of the outer cutting die, an annular positioning groove is arranged on the upper surface of the fixing seat, and a plurality of fixing holes penetrating to the accommodating cavity are arranged on the upper surface of the fixing seat located in the positioning groove.

[0014] A further improvement is that the fixing seat is integrally formed with the outer cutting die.

[0015] A further improvement is that both the outer cutting die and the inner cutting die are tungsten steel cutting heads.

[0016] A further improvement is that the inner knife mold is a square with a length of 40 mm, a width of 20 mm and a height of 22 mm.

[0017] A further improvement is that the length and width of the accommodating cavity are adapted to the depth of the inner knife mold to be 32 mm.

[0018] A further improvement is that the radius of the inner chamfer of the inner die and the inner chamfer of the outer die of the outer die is 3 mm.

[0019] A further improvement is that the radius of the outer chamfer of the outer cutting die is 6 mm.

[0020] A further improvement is that a first threaded hole is provided in the middle of the top of the accommodating cavity, a second threaded hole is provided in the center of the inner die, and the inner die and the outer die are connected by screws that cooperate with the second threaded hole and the first threaded hole.

[0021] Compared with the existing technology, the above technical solution has the following beneficial effects:

[0022] By changing the size of the punch knife on the manual punch table, the punched film is made to be more consistent with the film area actually passed by the ray of the surface density meter, thereby improving the fitting degree of the weight fitting curve of the surface density meter and reducing the measurement error of the online weight measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the outer knife mold of the utility model;

[0025] Figure 2 It is a schematic diagram of the top view of the external cutting die of the utility model;

[0026] Figure 3 It is a schematic diagram of the structure of the outer cutting die of the utility model when viewed from above;

[0027] Figure 4 This is a schematic diagram of the main structure of the outer knife die of the utility model;

[0028] Figure 5 This utility model Figure 4 Schematic diagram of the cross-sectional structure of AA in FIG.

[0029] Figure 6 It is a three-dimensional structural schematic diagram of the inner knife mold of the utility model;

[0030] Figure 7 It is a side view structural schematic diagram of the inner knife die of the utility model;

[0031] Figure 8 It is a schematic diagram of the top view of the inner knife die of the utility model;

[0032] Fig. 9 This utility model Figure 8 Schematic diagram of the cross-sectional structure of BB.

[0033] Explanation of the reference numerals: fixing seat 1, fixing hole 11, positioning groove 12, outer cutting die 2, accommodating cavity 21, inner chamfer of outer cutting die 22, first threaded hole 23, outer chamfer of outer cutting die 24, inner cutting die 3, inner chamfer 31, second threaded hole 32. DETAILED DESCRIPTION

[0034] See also Figure 1-Figure 9As shown, the technical solution adopted in this specific embodiment is: a coating weight measuring die knife mechanism, used for a manual die table, including an outer knife die 2 and an inner knife die 3, the outer knife die 2 and the outer knife die 2 are both square, the bottom surface of the outer knife die 2 is upwardly provided with a accommodating cavity 21 adapted to the inner knife die 3, the depth of the accommodating cavity 21 is greater than the height of the inner knife die 3, the size of the inner knife die 3 is the same as the size of the β-ray radiation transmission membrane of the β-Ray surface density meter, the four outer edges of the inner knife die 3 are set as inner knife die chamfers 31, the four outer edges of the outer knife die 2 are set as outer knife die outer chamfers 24, and the four inner edges of the outer knife die 2 are set as outer knife die inner chamfers 22 adapted to the inner knife die chamfers 31.

[0035] The upper end of the outer cutting die 2 is connected to a circular fixing seat 1 , the upper surface of the fixing seat 1 is provided with an annular positioning groove 12 , and the upper surface of the fixing seat 1 located in the positioning groove 12 is provided with a plurality of fixing holes 11 penetrating into the accommodating cavity 21 .

[0036] Wherein, the fixing seat 1 and the outer cutting die 2 are integrally formed.

[0037] Wherein, the outer cutting die 2 and the inner cutting die 3 are both tungsten steel cutting heads.

[0038] The inner knife mold 3 is a square with a length of 40 mm, a width of 20 mm and a height of 22 mm.

[0039] The length and width of the accommodating cavity 21 and the depth of the inner die 3 are adapted to be 32 mm.

[0040] Wherein, the radius of the inner cutter die chamfer 31 of the inner cutter die 3 and the outer cutter die inner chamfer 22 of the outer cutter die 2 is 3 mm.

[0041] Wherein, the radius of the outer chamfer 24 of the outer cutting die 2 is 6 mm.

[0042] A first threaded hole 23 is provided in the middle of the top of the accommodating cavity 21, a second threaded hole 32 is provided in the center of the inner die 3, and the inner die 3 and the outer die 2 are connected by screws, the second threaded hole 32 and the first threaded hole 23.

[0043] Working principle of the utility model: the punching size is 40mm*20mm, which is the same as the size of the β-ray radiation transmission film of the β-Ray surface density measuring instrument. The edge is rounded R3 to prevent the punching edge from being too sharp and causing the edge of the film to fall off. The material used is tungsten steel, which has better punching effect and longer service life. The assembly of the inner and outer die cutters can be easily repaired and replaced.

[0044] The operation mode of the diaphragm calibration is as follows: ① First mark the diaphragm position, move the radiation source to the determined position for static scanning, and obtain the original weight without area conversion; ② Take a sample and mark the diaphragm position, place it on the manual punching table, move the punching knife to the determined position for punching, and obtain a square sample diaphragm with the same scanning position; ③ Then measure the weight on the electronic balance, compare it with the machine-measured weight, and adjust the K / B value.

[0045] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A coating weight measuring die knife mechanism, characterized in that: It comprises an outer cutting die and an inner cutting die, both of which are square, an accommodating cavity adapted to the inner cutting die is opened upward on the bottom surface of the outer cutting die, the depth of the accommodating cavity is greater than the height of the inner cutting die, the size of the inner cutting die is the same as the size of the β-ray radiation-transmitting membrane of the β-Ray surface density measuring instrument, the four outer edges of the inner cutting die are set as inner cutting die chamfers, the four outer edges of the outer cutting die are set as outer cutting die outer chamfers, and the four inner edges of the outer cutting die are set as outer cutting die inner chamfers adapted to the inner cutting die chamfers.

2. A coating weight measuring die knife mechanism according to claim 1, characterized in that: The upper end of the outer cutting die is connected with a circular fixing seat, the upper surface of the fixing seat is provided with an annular positioning groove, and the upper surface of the fixing seat located in the positioning groove is provided with a plurality of fixing holes penetrating to the accommodating cavity.

3. A coating weight measuring die knife mechanism according to claim 2, characterized in that: The fixing seat is integrally formed with the outer cutting die.

4. A coating weight measuring die knife mechanism according to claim 3, characterized in that: The outer cutting die and the inner cutting die are both tungsten steel cutting heads.

5. A coating weight measuring die knife mechanism according to claim 1, characterized in that: The inner knife mold is a square with a length of 40 mm, a width of 20 mm and a height of 22 mm.

6. A coating weight measuring die knife mechanism according to claim 5, characterized in that: The length and width of the accommodating cavity are adapted to the depth of the inner die plate, which is 32 mm.

7. A coating weight measuring die knife mechanism according to claim 6, characterized in that: The radius of the inner chamfer of the inner die and the inner chamfer of the outer die of the outer die is 3 mm.

8. A coating weight measuring die knife mechanism according to claim 7, characterized in that: The radius of the outer chamfer of the outer cutting die is 6 mm.

9. A coating weight measuring die knife mechanism according to claim 1, characterized in that: A first threaded hole is provided in the middle of the top of the accommodating cavity, a second threaded hole is provided through the center of the inner cutting die, and the inner cutting die and the outer cutting die are connected by screws, the second threaded hole and the first threaded hole.

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