JP3452208B2 - Automatic sheet thickness measuring device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic sheet thickness measuring device, and more particularly to an automatic sheet thickness measuring device capable of automatically measuring the thickness of a sheet wound around a kneading roll heated to a high temperature. Regarding the device.

[0002]

2. Description of the Related Art Generally, when a synthetic resin or the like is manufactured, it is necessary for a manufacturer to check whether or not a fisheye or the like is generated in the synthetic resin for quality control. is there.

Further, a processing maker who processes the synthetic resin obtained from the manufacturer to process various products also needs to check the obtained synthetic resin in advance to check the presence or absence of fisheyes and the like. It is necessary to examine the extent to which fish eyes and the like occur when processed under the above processing conditions. If such a fish eye is present, a convex portion will be formed on the surface of the synthetic resin molded product, and if the molded product is a transparent sheet or film, the appearance will be abnormal and even if printing is performed on the surface. Ink jetting occurs, which eventually leads to defective printing, and in many cases, from a practical point of view, the product must be rejected.

There is a test roll device as a device for producing an inspection sheet or an inspection film for inspecting the synthetic resin for the presence of fish eyes and the like.

This test roll device has a pair of heating and kneading rolls arranged in parallel. The pair of heating and kneading rolls can freely adjust the gap between them, and can also freely adjust the rotating direction and the rotating speed, and the temperature of the heating and kneading rolls can be freely set. You can do it. In this case, the gap between the pair of heating and kneading rolls is set so that the gap between the pair of heating and kneading rolls has a predetermined size by visual inspection, for example, the axis of one heating and kneading roll is directed toward the axis of the other heating and kneading roll. It is adjusted by operating or stopping a drive source such as a motor for moving the vehicle forward and backward. Further, according to the primitive method, a screw for moving the shaft center of one heating kneading roll back and forth toward the shaft center of the other heating kneading roll so that the gap between the pair of heating kneading rolls has a predetermined size. The gap between the pair of heating and kneading rolls is adjusted by manually rotating the shaft.

Using this heating and kneading roll, a resin sheet for testing is prepared as follows. The "sheet" used in this specification is a concept including a film.

When a test resin sheet is manufactured by this test roll apparatus, a predetermined gap is initially provided between the pair of heating and kneading rolls. Then, the heating and kneading roll is heated to a predetermined temperature. A predetermined amount of a predetermined resin powder is supplied between the heating and kneading rolls. Since there is a gap between the pair of heating and kneading rolls, even if some of the resin powder may fall from the gap,
Most of the resin powder is stored upward in the gap between the pair of heating and kneading rolls.

Therefore, by rotating the pair of heating and kneading rolls at different rotation speeds or at the same rotation speed, shear and heat energy are applied to the resin powder on the heating and kneading rolls. The resin powder itself generates heat by applying a shearing force by the heating and kneading roll.

The resin that has become a semi-molten state due to the heat generated by the resin powder itself and the heating by the heating and kneading rolls is dripped into a sheet form from the gap that is slightly further widened between the pair of heating and kneading rolls, and the tip that is dripped into the sheet The part is further hung by the rotation of the heating and kneading roll, and the tip end of which is hung in a sheet shape is wound around the heating and kneading roll. As a result, in the pair of heating and kneading rolls, the resin in the semi-molten state or the molten state was wound around one heating and kneading roll in a sheet shape, and moreover, was melted in the gap between the pair of heating and kneading rolls. The resin is present as a pool.

In this state, the gap between the heating and kneading rolls is adjusted so that the sheet has a predetermined thickness, and the kneading by the heating and kneading rolls is performed for a predetermined time. Further, after the kneading time of a predetermined time has elapsed, the gap of the heating and kneading roll is adjusted so that the sheet that has been fed to the heating and kneading roll has a predetermined thickness, and then while the heating and kneading roll is being rotated or The rotation by the heating and kneading roll is stopped, and the resin sheet is separated from the heating and kneading roll.

In order to separate the resin sheet, the resin sheet wound around the rotating heating kneading roll or the resin sheet wound around the stationary heating kneading roll is cut along the axis of the heating kneading roll and rotated. while pulling the cut end of the resin sheet, or, while rotating the heating and kneading roll, pulling the cut end portion of the resin sheet that has already been cut into the stop, to separate the resin sheet from the heating kneading roll.

Using the resin sheet thus manufactured by the test roll apparatus, the presence of fish eyes in the resin sheet adjusted to have a predetermined thickness is inspected as follows.

That is, the resin sheet obtained as described above is stretched by an appropriate means, irradiated with light from the back side of the resin sheet, and visually observed from the front side of the resin sheet. If fish eyes etc. are present on the resin sheet, those parts will appear to glow white, so do not count the points that glow white, or measure the size of the fish eyes etc. with a loupe with a space etc. Detects or measures fish eyes. In addition,
As mentioned above, the fish eye shines white from the back side of the sheet with the fish eye and observes the sheet surface from the front side of the sheet, the fish eye glows white and gives an impression like a fish eye, so this kind of technology In the field, it is called "fish eye". It seems that this fish eye may be referred to as "gel", "gel" or "butsu" at the factory site.

When the conventional test roll device described above is used, the thickness of the resin sheet wound around the peripheral surface of the heating and kneading roll is determined by cutting a part of the wound resin sheet with an appropriate tool such as a spatula. It has been obtained by measuring the obtained resin sheet fragment with, for example, a dial gauge.

However, cutting out a part of the resin sheet from the rotating heating and kneading roll by hand involves a great risk of causing burns to the operator and pinching fingers between the heating and kneading rolls. It was In addition, since the dial gauge is used by hand, there is a problem in that the sheet thickness measurement value varies from person to person.

The object of the present invention has been completed based on the above circumstances. An object of the present invention is to eliminate the problems of the conventional heating and kneading apparatus including the above-mentioned conventional test roll apparatus. An object of the present invention is to provide an automatic sheet thickness measuring device capable of automatically, safely and accurately measuring a sheet formed by a heating and kneading roll without manual work. An object of the present invention is to provide an automatic sheet thickness measuring device capable of correcting an error caused by thermal distortion of a heated roll and accurately measuring the thickness of a sheet wound around a heated kneading roll. It is in. An object of the present invention is to measure a thickness of a sheet wound around a heated kneading roll, and to automatically adjust a gap between a pair of heating rolls according to the thickness of the sheet, an automatic sheet thickness measuring device. To provide.

[0017]

Means for solving the problems In order to solve the above-mentioned object, forward and backward toward the sheet forming region is a region formed of a sheet in the kneading roll independently of or the base with the base A first probe that is provided on the base as much as possible and is urged by a predetermined urging force toward the kneading roll, and is arranged in parallel to the first probe.
Along with the base or independently of the base is provided on the base so as to be able to move forward and backward toward the sheet non-forming region, which is a region where the sheet is not formed in the kneading roll, and with a predetermined biasing force toward the kneading roll. a second measuring element which is energized, a second displacement of the output and the first Displacement amount detection unit for outputting a movement amount of the first measuring element as an electrical signal, the amount of movement of the second measuring element as an electric signal wherein the amount detecting unit, the sheet non-forming region of the data and kneading roll, which is output from the first Displacement amount detection unit when the first feeler on the sheet wound around the sheet forming region of the kneading roll is in contact first an arithmetic control unit for calculating the thickness of the sheet when the 2 measuring element is in contact on the basis of the data output from the second Displacement amount detection unit, kneading low
Roll interval adjusting drive unit for adjusting the interval of
The data indicating the thickness of the sheet output from the control unit is
Output to the roll interval adjustment drive section and adjust according to the sheet thickness
The kneading rolls to a specified value
An automatic sheet thickness measuring device, comprising: a roll interval adjustment control unit that controls an adjustment drive unit .

[0018]

The basic principle of the automatic measuring device of the present invention is to measure the thickness of the sheet wound around the heated kneading roll, directly in the area where the sheet is not formed in the kneading roll, that is, in the area where the sheet is not formed. When the second measuring element is brought into contact with the second measuring element, the moving amount of the second measuring element, which is output from the second displacement amount detecting section, and the first measuring element is directly attached to the sheet which is rotated by the heated kneading roll. The first displacement amount output from the first displacement amount detection unit by contacting
Based on the moving amount of the measuring element, the thickness of the sheet wound around the heating roll is calculated by the calculation control unit.

If the initial positions of the first probe and the second probe are known, the data indicating the respective positions and the amount of movement of the first probe and the second probe are taken into the heating roll. The calculation control unit calculates the thickness of the formed sheet.

Further, before the sheet is wound around the heated kneading roll, the first probe is brought into contact with the sheet forming area of the kneading roll. At this time, an electric signal indicating the movement amount of the first tracing stylus is output from the first displacement amount detecting unit to the arithmetic control unit, and this data is set as data A ₀ indicating the initial position of the first tracing stylus. When the first probe is in contact with the sheet forming region of the kneading roll, the second probe is in contact with the sheet non-forming region of the kneading roll. At this time, an electric signal indicating the movement amount of the second tracing stylus is output from the second displacement amount detecting unit to the arithmetic control unit, and this data is set as data B ₀ indicating the initial position of the second tracing stylus. After the first probe and the second probe are retracted from the kneading roll, the kneading roll kneads the resin powder. When the resin sheet is wound around one of the pair of kneading rolls, the first probe is brought into contact with the sheet of the heating roll. At this time, an electric signal indicating the movement amount of the first tracing stylus is output from the first displacement amount detecting unit to the arithmetic control unit, and this data is set as data A ₁ indicating the position of the first tracing stylus. When the first probe is in contact with the sheet forming region of the kneading roll, the second probe is in contact with the sheet non-forming region of the kneading roll. At this time, an electric signal indicating the movement amount of the second tracing stylus is output from the second displacement amount detecting unit to the arithmetic control unit, and this data is set as data B ₁ indicating the initial position of the second tracing stylus.

The arithmetic control unit inputs the above data and outputs | A ₁
The thickness of the sheet wound around the kneading roll is calculated by calculating −A ₀ | − | B ₁ −B ₀ |.

As described above, the first probe is brought into contact with the sheet forming region of the heated kneading roll before the resin sheet is produced, and the second probe is brought into contact with the sheet non-forming region of the heated kneading roll. By bringing the data into contact with each other to obtain the initial positions of the first and second measuring elements, it is possible to remove an error due to thermal strain of the apparatus itself due to the heated kneading roll, and to measure the sheet thickness. Can be made even more accurate.

Here, the number of each of the first and second measuring elements is not limited to one. For example, a plurality of first gauge heads that contact the sheet forming area may be provided. Specifically, with respect to the first gauge head, the first gauge head that contacts the central portion of the sheet wound around the kneading roll and the vicinity of both ends of the sheet 2
Convenience of the three first measuring elements, or the first measuring elements that come into contact with the central portion of the sheet wound around the kneading roll.
Conveniently 5 pieces consisting of the measuring element and two first measuring elements that contact near both ends of the sheet, and two first measuring elements that contact the sheet portion between the center of the sheet and the edge of the sheet. First of
An example is a probe.

Regarding the second measuring element, one measuring element which is a sheet non-forming area in the heating roll and is in close contact with the sheet forming area, or a sheet non-forming area in the heating roll is There may be two probes in contact with both sides of the sheet forming area.

As described above, when the sheet thickness automatic measuring device is provided with a plurality of first measuring elements and at least one second measuring element, the arithmetic and control unit is rotated by the kneading roll. It is possible to calculate the average thickness value of the sheet.

When the portions of the first and second measuring elements that come into contact with the kneading roll or sheet are formed of rotatable rollers, the surface of the kneading roll or the sheet is not damaged, and the kneading roll or sheet can be accurately measured. The amount of movement can be measured.

Further, the arithmetic control unit in the automatic sheet thickness measuring device is configured to output data from the plurality of first displacement amount detecting units and data on the moving amounts of the plurality of first measuring elements and the second displacement amount detecting unit. It is possible to calculate the average thickness, the minimum thickness and / or the maximum thickness of the sheet that is rotated by the kneading roll, based on the data about the movement amount of the first probe that is output from

If the automatic sheet thickness measuring device is provided with a roll driving means and a roll interval adjusting control section for outputting a drive control signal to the roll driving means, data indicating the sheet thickness calculated by the arithmetic control section is provided. Is output to the roll gap adjustment control unit, and the roll gap adjustment control unit outputs a drive control signal to the roll driving unit so that the gap between the kneading rolls becomes a predetermined value according to the sheet thickness. Therefore, an appropriate gap between the heating rolls is automatically adjusted according to the thickness of the sheet wound around the kneading rolls.

[0029]

EXAMPLE A first example of the present invention will be described below.

As shown in FIG. 1, the automatic sheet thickness measuring apparatus 1 includes a guide frame 4 including a pair of vertical frames 2 and a pair of horizontal frames 3, and a pair of horizontal frames 3 in the guide frame 4.
And a drive source (not shown) for moving the support 6 forward and backward, and a rod-shaped support 6 that penetrates through the support 6 and has a stopper 5 at the rear end thereof. A base 7 arranged in parallel with the horizontal frame 3, and a first gauge 8a as a first displacement amount detection unit and a second displacement amount detection unit provided on the base 7 and arranged at a predetermined interval. Second gauge 8b, a first gauge head 9a connected to the first gauge 8a, and a second gauge head 9b connected to the second gauge 8b.

As described above, in this embodiment, the first measuring element 9a and the second measuring element 9b are provided on the base 7 via an appropriate supporting frame (may be referred to as a supporting member or a supporting frame). The first and second measuring heads 9a and 9b can be moved back and forth at the same time by moving the base 7 forward and backward.

The second measuring element 9b is separated from the end of the sheet wound on the sheet winding roll 10 so that the first measuring element 9a abuts on the central portion of the sheet wound on the sheet winding roll 10. The surface of the sheet winding roll is positioned so as to come into contact with the vicinity of the sheet. If the first probe 9a and the second probe 9b are provided in such a positional relationship, the thickness of the sheet end portion and the thickness of the central portion can be measured at the same time as described later, and the sheet thickness can be made uniform. You can check the sex.

Here, the region around the peripheral surface of the sheet winding roll 10 around which the sheet is wound is the sheet forming region 10a, and the peripheral face other than the sheet forming region 10a is the sheet non-forming region 10b. Further, the sheet winding roll 10 and the counter roll 11 may be collectively referred to as a kneading roll.

These two measuring elements, that is, the first measuring element 9a
A rotating roller is provided, for example, at a portion of the second probe 9b that comes into contact with the roll 10. The rotating roller is made of a material such as silicon rubber having heat resistance and hardness that does not damage the surface of the roll 10. When the rotating roller made of such a material is provided on the tracing stylus 9, the contact between the roll 10 and the tracing stylus 9 becomes smooth, and even if the tracing stylus 9 contacts the roll 10, scratches on the surface of the roll 10 are caused. Sticking is prevented.

The first gauge 8a is a displacement amount of the first measuring element 9a when the first measuring element 9a is brought into contact with an object, that is, a peripheral surface of the sheet winding roll 10 or a sheet wound around the sheet winding roll 10. Are various known devices, such as a micrometer, a linear gauge, or a rotary encoder, as long as they can detect and output the detected displacement amount as an electric signal. The second gauge 8b is the second
As long as the measuring element 9b comes into contact with the sheet non-forming area of the sheet winding roll 10 and the displacement amount of the second measuring element 9b is detected, and the detected displacement amount can be output as an electric signal, various known methods can be used. The device is for example a micrometer or a linear gauge or a rotary encoder.

The automatic sheet thickness measuring device 1 of the present invention is
The support 6 is capable of moving forward and backward toward the sheet winding roll 10 of the heating and kneading roll which has at least the sheet winding roll 10 and the opposing rolls 11 whose axes are parallel to and parallel to the sheet winding roll 10. Is located in.

As shown in FIG. 2, the automatic sheet thickness measuring apparatus 1 further includes an arithmetic control unit 12 and a memory 13. The arithmetic control unit 12 has the pair of gauges, that is, the first gauge 8a. And the thickness of the sheet is calculated based on the data output from the second gauge 8b. The memory 13 is not required when the arithmetic control unit 12 is provided with an internal memory and the storage capacity of the internal memory is sufficiently large.

That is, in the state where the sheet is not wound around the sheet winding roll 10, first the first tracing stylus 9a
And the second measuring element 9b is brought into contact with the surface of the sheet winding roll 10, the moving amount of the first measuring element 9a at this time is detected by the first gauge 8a, and the moving amount of the second measuring element 9b is measured by the second gauge. 8b detects this first gauge 8a
Then, the data output from the second gauge 8b is output to the arithmetic control unit 12 as initial data, and the initial data is temporarily stored in the memory 13. In this case, the sheet winding roll 10 and the counter roll 11 have a predetermined gap and are arranged with their axes parallel to each other.
Further, it is heated to a predetermined temperature, for example, a temperature high enough to melt the resin powder.

Next, the first measuring element 9a and the second measuring element 9b are attached to the sheet wound around the sheet winding roll 10.
And the data output from the first gauge 8a and the second gauge 8b are output as measurement data to the arithmetic control unit 12. In the arithmetic control unit 12, the thickness of the sheet measured by the first gauge 8a and the thickness of the sheet measured by the second gauge 8b are calculated by subtracting the initial data in the memory from the input measurement data, The calculated value is output to the output display unit 14.

The operation of the automatic sheet thickness measuring device 1 will be described.

As an initial state, in this automatic sheet thickness measuring apparatus 1, the base 7 is retracted to the vicinity of the lateral frame 3 in the guide frame 4. When the sheet winding roll 10 is sufficiently heated, the sheet winding roll 10
Also, before supplying the resin powder to the gap between the opposing rolls 11, the base 7 is advanced toward the sheet winding roll 10 by a drive source (not shown), and the first probe 9a is brought into contact with the sheet forming region of the sheet winding roll 10. Then, the second tracing stylus 9b is brought into contact with the sheet non-forming area on the surface of the sheet winding roll 10. First probe 9
When a and the second gauge head 9b come into contact with the surface of the sheet winding roll 10, the movement displacement quantity of the gauge head 9 is detected from the first gauge 8a and the second gauge 8b, and the movement displacement quantity is used as initial position data. Electrical signal calculation controller 1
Output to 2. The arithmetic control unit 12 that receives the data output from the first gauge 8a transfers the initial position data A ₀ indicating the initial position to the memory 13 and temporarily stores it.
Further, the arithmetic control unit 12 which receives the data output from the second gauge 8b receives the initial position data B ₀ indicating the initial position.
Is transferred to the memory 13 and temporarily stored. Before winding the sheet around the sheet winding roll 10, in other words, before kneading the resin powder between the sheet winding roll 10 and the opposing roll 11, the first measuring element 9a and the second measuring element 9b.
When the measurement by is completed, the base 7 moves backward and the probe 9
Moves away from the sheet winding roll 10 and the base 7 returns to the original initial state.

Next, a predetermined amount of resin powder is supplied into the gap between the sheet winding roll 10 and the opposing roll, and the kneading roll is rotated to knead the resin powder to form a resin sheet on the surface of the sheet winding roll 10. After a lapse of a predetermined time, the base 7 is moved forward to bring the first probe 9a into contact with the sheet on the sheet winding roll 10 and the second probe 9b to contact the sheet non-forming area of the sheet winding roll 10. When the first gauge head 9a comes into contact with the sheet, an electric signal that indicates the displacement amount of the first gauge head 9a as the measurement data A ₁ is output from the first gauge 8a to the arithmetic control unit 12, and also from the second gauge 8b. An electric signal having the amount of movement displacement of the second tracing stylus 9b as the measurement data B ₁ is an arithmetic control unit 12
Is output to. When the measurement data is output to the arithmetic and control unit 12, the base 7 moves backward and returns to the initial state.

In the arithmetic control unit 12, from the input measurement data A ₁ and B ₁ and the initial position data A ₀ and B ₀ read from the memory 13, | A ₁ −A ₀ | − | B ₁ −
By calculating B ₀ |, the thickness of the sheet wound around the kneading roll is calculated. The calculated sheet thickness is displayed on the output display unit 14.

Although one embodiment of the present invention has been described above, the sheet thickness automatic measuring apparatus of the present invention may have the following structure as a second embodiment.

In FIG. 3, a roll gap adjusting drive unit 15 and a roll gap adjusting control unit 16 are newly added to the sheet thickness automatic measuring device shown in FIG.

The roll gap adjusting drive unit 15 has a mechanism for adjusting the gap between the kneading rolls. Specifically, a mode in which a drive source, for example, a motor, which brings the axis of the sheet winding roll 10 closer to or away from the axis of the facing roll 11, is provided. Aspects provided with a drive source, for example, a motor for moving the shaft center close to or away from each other, and the shaft center of the sheet winding roll 10 and the facing roll 11
There may be mentioned a mode in which a driving source, for example, a motor, which moves the respective shaft cores of, to bring them close to or away from each other. In this embodiment, the roll gap adjusting drive unit 15 has a structure including a motor for moving the axis of the opposed roll 11.

The roll gap adjustment control unit 15 inputs the data about the sheet thickness output from the arithmetic control unit 12, and outputs a drive control signal necessary for moving the axis of the opposed roll 11 to the roll gap adjustment drive unit. Various configurations can be adopted as long as they are output to the memory 15. For example, a memory storing therein a correspondence table of the sheet thickness and the gap of the kneading rolls necessary to obtain the sheet thickness and the first The data indicating the sheet thickness output from the arithmetic and control unit 12 in the above embodiment is input, the input data and the corresponding table are compared with each other to select a necessary kneading roll gap, and the selected kneading roll gap is set. Calculates the amount of movement of the shaft center of the facing roll 11 required for the above, and outputs to the motor a drive control signal that commands the amount of drive of the motor required for the calculated amount of movement And a control unit.

In this embodiment, the thickness of the sheet wound around the sheet winding roll 10 can be automatically measured in the same manner as in the first embodiment. If the thickness of the sheet measured by the first gauge 8a and the thickness of the sheet measured by the second gauge 8b greatly differ by more than the error range, the sheet winding roll 10
And the gap between the counter roll 11 and the roller 11 is finely adjusted.

For this fine adjustment, the roll gap adjusting control unit 16 for inputting the data about the thickness of the sheet output from the arithmetic control unit 12 searches for the kneading roll gap corresponding to the sheet thickness and finds the current kneading roll. The amount of movement of the shaft core of the opposed roll 11 required to bring the gap of the kneading rolls to a predetermined value is calculated in comparison with the gap of No. 1, and a drive control signal for moving the shaft core of the opposed roll 11 according to the calculation result. Is output to the roll interval adjustment drive unit 15. The roll gap adjusting drive unit 15 drives the motor to move the shaft center of the facing roll 11 to make the gap between the kneading rolls a predetermined gap. Then, the thickness of the sheet on the sheet winding roll 10 is measured again by the same operation as in the first embodiment. As a result of the measurement, the first gauge 8
When the sheet thickness measured by a and the sheet thickness measured by the second gauge 8b match within an error range, the sheet is removed from the sheet winding roll 10 after kneading for a predetermined time in that state. .

The sheet thickness automatic measuring apparatus according to the above-described embodiment has been described for the case where the first measuring element 9a is one and the second measuring element 9b is one, but the sheet thickness automatic measuring apparatus of the present invention is The sheet thickness automatic measuring device includes a plurality of first measuring elements and at least one second measuring element.

In the sheet thickness automatic measuring device provided with a plurality of first gauge heads 9a, the arrangement of the plurality of first gauge heads 9a is, for example, the center of the sheet forming area 10a of the sheet winding roll 10. Part (Fig. 1
In, the intermediate portion between the alternate long and short dash lines shown on the sheet winding roller 10. ), And three first stylus heads each consisting of two first stylus heads respectively abutting on the ends of the sheet forming area 10a. In some cases, an appropriate number of first measuring elements may be arranged at equal intervals in a direction parallel to the kneading roller axis of the sheet forming area.

When a plurality of first gauge heads and a plurality of second gauge heads are installed in the automatic sheet thickness measuring device, a first gauge as a first displacement amount detecting section is provided corresponding to each first gauge head. A second gauge is provided as a second displacement amount detection unit corresponding to each second probe. Then, in the arithmetic processing unit, the displacement amount data output from the plurality of first gauges that detect the amount of movement of the plurality of first gauge heads is input and the average value of the displacement amount data is calculated.

In this case, the arithmetic and control unit includes a plurality of first
When the plurality of first measuring heads are in contact with the sheet forming region of the kneading roll which is sufficiently heated and before the sheet is wound, which is output from the displacement amount detecting unit, Data on movement amount A ₀₁
~ A _0n (where n is the number of the first tracing stylus and is an integer of 2 or more) is averaged to calculate the average value data _av A ₀ , which is sufficient for output from the second gauge. The data B _{01 to} B _0N (where N is the second value) about the moving amount of the second probe when the second probe contacts the sheet non-forming area in the kneading roll before being heated to Indicating the number of contact points, which is an integer greater than or equal to 1.) is averaged to calculate average value data _av B ₀ , which is output from a plurality of first gauges, is sufficiently heated,
Further, data A _{11 to} A _1n (where n is the same as the above) regarding the movement amounts of the plurality of first measuring elements when the plurality of first measuring elements contact the sheet in the kneading roll around which the sheet is wound. The average value data _av A ₁ is calculated, and the second value is output to the second gauge in the sheet non-forming area in the kneading roll on which the sheet is sufficiently heated and wound. Data B ₁₁ about the amount of movement of the second probe when the probe contacts
B _1N (where N represents the same meaning as described above) is averaged to calculate average value data _av B ₁ , and | _av A _{1 −av} A ₀ |
By calculating − | _av B _{1 −av} B ₀ |, the average thickness of the sheet wound around the kneading roll is calculated.

The gap between the kneading rolls can be automatically adjusted based on the calculated sheet thickness.

When a plurality of first gauges and a plurality of second gauges are installed in the automatic sheet thickness measuring device, the maximum and minimum thicknesses of the sheet are calculated by the arithmetic processing section as follows. You can also

That is, the arithmetic control unit is composed of a plurality of first
Movement of the plurality of first gauge heads when the plurality of first gauge heads contact the sheet forming region of the kneading roll that is sufficiently heated and before the sheet is wound, which is output from the displacement amount detection unit. Data on quantity A
_{01 to} A _0n (where n is the number of the first tracing stylus and is an integer of 2 or more) and the value output from the second gauge before being sufficiently heated and before the sheet is wound. Data B on the amount of movement of the second probe when the second probe contacts the sheet non-forming area in the kneading roll
_{01 to} B _0N and the plurality of first gauges when the plurality of first gauge _heads come into contact with the sheet in the kneading roll, which is sufficiently heated and wound with the sheet, output from the plurality of first gauges. 1 The data A _{11 to} A _1n about the moving amount of the tracing stylus and the second tracing stylus in the sheet non-forming area in the kneading roll on which the sheet is wound sufficiently, which is output from the second gauge. Data B _{11 to} B on the amount of movement of the second probe when it comes into contact
_{From 1N} , calculate the thickness of the sheet part that each first contact point touches, store the calculation result in the memory once, and then read the thickness of the sheet part that each first contact point touches from the memory Compare this and select the maximum sheet thickness and the minimum sheet thickness. At the same time, the average value of the thickness of the sheet portion in contact with the first probe can be calculated as described above.

In the present invention, in addition to the structures disclosed in the above-described embodiments, for example, the base is fixed and does not displace, and the base is mounted on the base so that the probe can be moved forward and backward. On the other hand, the tracing stylus may have a structure supported by an appropriate supporting member.

[0058]

As described in detail above, according to the present invention, it is possible to automatically measure the thickness of the sheet on the sheet winding roll, its average thickness, or the maximum thickness and the minimum thickness. (EN) It is possible to provide a safe automatic sheet thickness measuring device that can prevent human injury such as burns caused by a person coming into contact with a heating roll and pinching fingers between the rolls.

Moreover, since this sheet thickness automatic measuring device measures the sheet thickness without manual labor, the operator can accurately measure the sheet thickness without any error in the measured data.

Since this sheet thickness automatic measuring device measures at least two points of the thickness of the sheet on the sheet winding roll, by combining this sheet thickness automatic measuring device and the kneading roll, the kneading roll is measured every time the sheet thickness is measured. By finely adjusting the gap between them, it becomes possible to easily manufacture a sheet having a uniform thickness.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing an automatic sheet thickness measuring device of the present invention.

FIG. 2 is a block diagram showing an outline of data processing in the sheet thickness automatic measuring apparatus of the present invention.

FIG. 3 is a block diagram showing an outline of other data processing in the sheet thickness automatic measuring apparatus of the present invention.

[Explanation of symbols]

1 Sheet thickness automatic measuring device 2 vertical frames 3 horizontal frames 4 guide frames 5 stopper 6 support 7 base 8a 1st gauge 8b 2nd gauge 9 probe 10 sheet winding roll 11 Opposite roll 12 Arithmetic control unit 13 memory 14 Output display section 15 Roll interval adjustment drive 16 Roll interval adjustment controller

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Chino 3-43-2 Ebisu, Shibuya-ku, Tokyo Within Nikkiso Co., Ltd. (72) Inventor Kenzo Kaminaga 2-16-2 Noguchicho, Higashimurayama-shi, Tokyo Nikkiso Co., Ltd. Company Higashimurayama Factory (72) Inventor Jun Tsutsumi 2-16-2 Noguchi-cho, Higashimurayama-shi, Tokyo Nikkiso Co., Ltd. Higashimurayama Factory (72) Inventor Takashi Kimura 2-16-2 Noguchi-cho, Higashimurayama-shi, Tokyo Inside Higashimurayama Works (72) Inventor Masaaki Suzuki 2-16-2 Noguchi-cho, Higashimurayama, Tokyo Nikkiso Inside Higashimurayama Works (72) Inventor Keisuke Kato 2-16-2 Noguchi-cho, Higashimurayama-shi, Tokyo Nikkiso Co., Ltd. Higashimurayama Works (72) Inventor Masaru Takeuchi No. 1 Towada, Kamisu Town, Kashima-gun, Ibaraki Prefecture Shin-Etsu Chemical Co., Ltd. Kashima Factory Quality Assurance Department (72) Inventor Hideo Yoshikoshi 1st Towada, Kamisu-cho, Kashima-gun, Ibaraki Prefecture Shin-Etsu Chemical Co., Ltd. Kashima Plant Quality Assurance Department (56) Reference JP-A-2-264810 (JP, A) JP-A 64-- 20106 (JP, A) JP-A-3-55211 (JP, A) JP-A-6-15638 (JP, A) Actual development Sho 53-68259 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G01B 5/00-5/34 G01B 21/00-21/32 B01F 13/00-13/10 B29B 7/00-7/94

Claims (7)

(57) [Claims] 1. A provided with the base or the reverse capable base before towards the sheet forming region is a region formed of a sheet in the kneading roll independently of the base and towards the kneading roll A first probe that is biased by a predetermined biasing force, and is arranged in parallel to the first probe,
Along with the base or independently of the base is provided on the base so as to be able to move forward and backward toward the sheet non-forming region, which is a region where the sheet is not formed in the kneading roll, and with a predetermined biasing force toward the kneading roll. a second measuring element which is energized, a second displacement of the output and the first Displacement amount detection unit for outputting a movement amount of the first measuring element as an electrical signal, the amount of movement of the second measuring element as an electric signal wherein the amount detecting unit, the sheet non-forming region of the data and kneading roll, which is output from the first Displacement amount detection unit when the first feeler on the sheet wound around the sheet forming region of the kneading roll is in contact first an arithmetic control unit for calculating the thickness of the sheet when the 2 measuring element is in contact on the basis of the data output from the second Displacement amount detection unit, kneading low
Roll interval adjusting drive unit for adjusting the interval of
The data indicating the thickness of the sheet output from the control unit is
Output to the roll interval adjustment drive section and adjust according to the sheet thickness
The kneading rolls to a specified value
An automatic sheet thickness measuring device, comprising: a roll interval adjustment control unit that controls an adjustment drive unit . 2. A memory for storing data output from each of the first displacement amount detection unit and the second displacement amount detection unit, and outputting the data to the arithmetic control unit in response to a command from the arithmetic control unit. The sheet thickness automatic measuring device. 3. The calculation control unit outputs from the first displacement amount detection unit the movement amount of the first probe contacting the sheet forming region in the kneading roll before being sufficiently heated and the sheet is wound. Data A ₀
Data B ₀ output from the second displacement amount detection unit regarding the amount of movement of the second probe contacting the sheet non-forming area in the kneading roll before being sufficiently heated and wound with the sheet, and sufficient heating The data A ₁ output from the first displacement amount detection unit regarding the amount of movement of the first probe that has come into contact with the sheet wound around the kneading roll
And the data B ₁ output from the second displacement amount detector that is sufficiently heated and is in contact with the sheet non-forming area in the kneading roll on which the sheet is wound, | A ₁ −
By performing the calculation of A ₀ | − | B ₁ −B ₀ |
The sheet thickness automatic measuring device according to claim 1, wherein the thickness of the sheet wound around the kneading roll is calculated. 4. A plurality of the first gauge heads are provided, a plurality of first displacement amount detection sections corresponding to the respective first gauge heads are arranged, and at least one second gauge head is provided, The sheet thickness automatic measuring device according to claim 1 or 2, wherein at least one second displacement amount detecting section corresponding to the second probe is arranged. 5. The arithmetic control unit outputs a plurality of first displacement amount detection units to a plurality of first forming areas in a sheet forming region in a kneading roll before being sufficiently heated and the sheet is not wound. Data A _{01 to} A _0n regarding the movement amounts of the plurality of first measuring elements when the measuring elements come into contact with each other.
(However, n represents the number of the first tracing stylus and is an integer of 2 or more.) The average value data _av A ₀ is calculated,
Regarding the amount of movement of the second probe when the second probe contacts the non-sheet forming region of the kneading roll that is sufficiently heated and before the sheet is wound, which is output from the second displacement detector. Data of B ₀₁ ~ B
_0N (where N is the number of the second tracing stylus and is an integer of 1 or more) is averaged to calculate average value data _av B _0, which is output from the plurality of first displacement amount detection units. of,
The data A _{11 to} A _1n (however, n is the amount of movement of the plurality of first gauge heads when the plurality of first gauge heads come into contact with the sheet in the kneading roll sufficiently heated and wound with the sheet. Represents the same meaning as described above.), The average value data _av A ₁ is calculated, and the kneading roll, which is sufficiently heated and wound with the sheet, is output from the second displacement amount detection unit. Data B _{11 to} B _1N regarding the movement amount of the second probe when the second probe contacts the sheet non-formation region in
N has the same meaning as described above. ) _Is averaged to calculate average value data _av B ₁ , and | _av A _{1 −av} A ₀ | − |
The sheet thickness automatic measuring device according to claim 4, wherein the thickness of the sheet wound around the kneading roll is calculated by calculating _av B _{1 −av} B ₀ |. 6. The arithmetic control unit outputs a plurality of first displacement amounts to a plurality of first measurement in a sheet forming region of a kneading roll before being sufficiently heated and before the sheet is wound. Data A _{01 to} A about the movement amount of the plurality of first measuring elements when the child contacts
_0n (where n is the number of the first tracing stylus and is an integer of 2 or more) and the value before being sufficiently heated and wound by the sheet, which is output from the second displacement amount detection unit. Data B _{01 to} B _0N about the movement amount of the second probe when the second probe contacted the sheet non-forming area in the kneading roll, and a sufficient amount of data output from the plurality of first displacement amount detectors, The data A _{11 to} A _1n about the movement amounts of the plurality of first measuring elements when the plurality of first measuring elements contact the sheet in the kneading roll that is heated to the sheet and is wound around the sheet, and the second displacement. Data B about the amount of movement of the second probe when the second probe comes into contact with the sheet non-forming area in the kneading roll that is sufficiently heated and the sheet is wound, which is output from the amount detector. The sheet thickness automatic measuring device according to claim 4 or 5, wherein the average thickness and the maximum thickness and / or the minimum thickness of the sheet wound around the kneading roll are calculated from _{11 to} B _1N . 7. The first tracing stylus and the second tracing stylus are
On the surface of the heating roll or on the heating roll in these
The part that comes into contact with the sheet is formed by a rotatable roller.
The sheet thickness according to any one of claims 1 to 6
Automatic measuring device.