Slit die tolerance measurement system

Abstract

The present invention provides a system for measuring a tolerance between a die lip of a slot die including a shim disposed to discharge ink and the shim, the system including: a base unit on an upper surface of which the slot die is arranged; a sensor unit arranged at a side of the base unit to measure a tolerance between a die lip of the slot die and the shim; a driving unit mounted on the base unit to move the sensor unit up and down, left and right, and rotate in a predetermined direction; and an electrical component box including a control unit for controlling the driving unit by transmitting an electrical signal to the driving unit, and a display unit for receiving a value measured by the sensor unit as an electrical signal and displaying the electrical signal.

Description

Technical Field

[0001] This invention relates to a slit die tolerance measurement system, and more specifically, to a slit die tolerance measurement system for automatically measuring the tolerance between the die lip and the gasket of a slit die. Background Technology

[0002] In recent years, due to the depletion of fossil fuels leading to rising energy prices and increasing concerns about environmental pollution, the demand for environmentally friendly alternative energy sources has been continuously increasing.

[0003] Therefore, research into various power generation technologies, including nuclear, solar, wind, and tidal power, is ongoing, and there is increasing attention on energy storage devices for more efficient use of energy generated in this way.

[0004] In particular, with technological advancements and increasing demand for mobile devices, the demand for batteries as an energy source is rapidly increasing, and extensive research is being conducted on batteries capable of meeting this demand.

[0005] In terms of battery shape, there is a high demand for thinner, square and pouch-type secondary batteries that can be used in products such as mobile phones.

[0006] In terms of materials, there is a high demand for lithium secondary batteries such as lithium-ion batteries and lithium-ion polymer batteries, which have advantages such as high energy density, discharge voltage and output stability.

[0007] Typically, a secondary battery includes an electrode assembly with a stacked structure having a positive electrode, a negative electrode, and a separator located between the positive and negative electrodes.

[0008] The positive and negative electrodes are manufactured by coating a current collector with a slurry containing active materials.

[0009] To ensure uniform characteristics of the secondary battery, the slurry must be coated onto the current collector with a uniform thickness.

[0010] For this purpose, slurry coating devices such as mold coating machines are used.

[0011] The slurry coating apparatus includes a slit die that coats a large area with a relatively thin layer of slurry.

[0012] This coating method using a slit die head is superior to other coating methods in terms of maintenance and productivity. Therefore, in addition to being used for current collectors to coat slurry onto secondary battery electrodes, it is also widely used in the manufacture of panels for flat panel display devices.

[0013] The slit die applies slurry to the collector by moving the slit die itself or by moving the collector, so that the slurry is discharged through the ink discharge tip of the slit die, just like ink flowing from the tip of a pen.

[0014] At both ends of the slit die in the width direction of the current collector, there is a spacer offset or gap between the die lip and the spacer, and when coating is performed using the slit die, the ink spreads through the gap formed by the steps due to surface tension.

[0015] At this point, if the step difference between the mold lip and the gasket is within a certain level, the expansion is uniform and the width deviation of the applied slurry is small. However, if the step difference between the mold lip and the gasket exceeds a certain level, the width deviation of the applied slurry becomes larger.

[0016] Therefore, it is necessary to manage the gap between the die lip and the gasket to ensure that it does not exceed a certain level, and for this purpose, a method for measuring the gap between the die lip and the gasket needs to be designed.

[0017] Previously, measuring devices used to measure the step difference between the die lip and the die core of a slit die were made portable. Therefore, the sensor of the measuring device had to be manually moved to the position to be measured, and even when measuring the same slit die again, the same operation of manually moving the sensor to the measurement position had to be repeated.

[0018] Furthermore, when the shape of the slit die lip changes, the fixture needs to be replaced, which increases the time required for the measurement process.

[0019] Furthermore, since the measurement is performed manually, the results may vary depending on the person performing the measurement, and the measurement personnel have to directly support the sensors of the measuring device during the measurement, which results in a heavy workload for the personnel.

[0020] [Existing technical documents]

[0021] [Patent Literature]

[0022] (Patent Document 1) KR 10-2023-0063097 A (Published on May 9, 2023) Summary of the Invention

[0023] Technical issues

[0024] The present invention aims to solve the various problems of the prior art and its purpose is to provide a slit die tolerance measurement system that can shorten the measurement process time and improve measurement reproducibility and accuracy by automating the process and establishing formulas for each die model.

[0025] Technical solution

[0026] To achieve the above objectives, the present invention provides a system for measuring the tolerance between the die lip of a slit die head including a gasket configured to discharge ink and the gasket, the system comprising: a base unit on which the slit die head is disposed on an upper surface of the base unit; a sensor unit disposed on one side of the base unit for measuring the tolerance between the die lip of the slit die head and the gasket; a drive unit mounted on the base unit for driving the sensor unit to move vertically, longitudinally, and laterally and to rotate in a predetermined direction; and an electrical component box including a control unit and a display unit, the control unit controlling the drive unit by transmitting electrical signals to the drive unit, and the display unit receiving and displaying the value measured by the sensor unit as an electrical signal.

[0027] A frame may be provided at the lower part of the base unit to support the base unit, so that the base unit is positioned at a predetermined height above the ground.

[0028] Multiple support members are installed at the bottom of the frame, and the support members can be made height-adjustable.

[0029] Multiple casters can be installed at the bottom of the frame.

[0030] Multiple vibration damping pads may be installed at intervals between the base unit and the frame.

[0031] The tolerance can be defined as the distance between the end of the die head and the end of the gasket at the die lip of the slit die head.

[0032] A first stop member shaped like the letter L can be installed on the upper surface of the base unit, so that the lower edge of one side of the slit die head is aligned; and a second stop member shaped like a straight line can be installed, so that the lower edge of the other side of the slit die head is aligned in a straight line with the lower edge of the one side of the slit die head along the length direction of the base unit on the upper surface of the base unit.

[0033] The first stop and the second stop may be formed of polyetheretherketone (PEEK).

[0034] The control unit can store the vertical position, longitudinal position, lateral position, and rotation angle of the slit mold head as data in the form of a formula for each model, and transmit the stored data to the drive unit so that the sensor unit can automatically perform measurements.

[0035] The driving unit may include: a first direction driving part that linearly moves the sensor unit along the first direction, assuming the longitudinal direction of the base unit is a first direction; a second direction driving part that linearly moves the sensor unit along a second direction, the second direction being a direction perpendicular to the first direction on the same plane; a third direction driving part that linearly moves the sensor unit along a third direction, the third direction being the direction in which the sensor unit moves up and down from the top of the base unit; and a rotation part that rotates the sensor unit around an axis parallel to the first direction at a predetermined angle.

[0036] The first directional driving part may include: a first fixing plate, the first fixing plate being formed along the first direction having a predetermined length and fixed to the upper surface of the base unit; a first guide member, the first guide member being formed along the first direction having a predetermined length and fixed to the first fixing plate, and wherein a predetermined guide groove is formed; a first slider, the first slider moving linearly along the guide groove of the first guide member; and a first drive motor, the first drive motor being disposed on one side of the first guide member to provide driving force to the first slider.

[0037] The second directional driving part may include: a second fixing plate, which is formed along the second direction to have a predetermined length and is fixed to the upper surface of the first slider; a second guide member, which is formed along the second direction to have a predetermined length and is fixed to the second fixing plate, and wherein a predetermined guide groove is formed; a second slider, which moves linearly along the guide groove of the second guide member; and a second drive motor, which is disposed on one side of the second guide member to provide driving force to the second slider.

[0038] The third-direction driving unit may include: a third fixing plate, the third fixing plate including a third horizontal member fixed to the upper surface of the second slider and a third vertical member formed along the third direction from the upper surface of the third horizontal member having a predetermined length; a third guide member, the third guide member being formed along the third direction having a predetermined length and fixed to the third vertical member, and wherein a predetermined guide groove is formed; a third slider, the third slider moving linearly along the guide groove of the third guide member; and a third drive motor, the third drive motor being disposed on one side of the third guide member to provide driving force to the third slider.

[0039] The rotating part may include: a fourth fixing plate fixed to the third slider; a rotating base plate arranged along the second direction and one end fixed to the fourth fixing plate; a rotating motor arranged on one side of the rotating base plate; a rotating plate configured to receive driving force from the rotating motor and connected to the sensor unit to rotate the sensor unit by a predetermined angle; and a sensor unit fixing plate, the sensor unit being fixed to the sensor unit fixing plate, and one end of the sensor unit fixing plate being connected to the rotating plate.

[0040] The sensor unit may include a laser sensor.

[0041] The sensor unit can irradiate laser light onto the ends of the die lip and gasket of the slit die head, and detect the laser light reflected from the surfaces of the die lip and gasket of the slit die head.

[0042] Beneficial effects

[0043] Based on the solution to the above problems, the present invention has the following effects.

[0044] This invention provides a slit die tolerance measurement system, comprising an electrical component box with a control unit and a display unit, a base unit on which the slit die is placed, a sensor unit for measuring the tolerance between the die lip and the gasket of the slit die, and a drive unit for moving and rotating the sensor unit vertically, longitudinally, and laterally. This reduces measurement time and improves measurement reproducibility and accuracy through automation and the development of formulas for each die model.

[0045] Furthermore, by providing multiple height-adjustable support members at the bottom of the frame, the present invention has the effect of freely adjusting the height of the base unit as needed and facilitating the horizontal adjustment of the base unit.

[0046] Furthermore, by providing multiple casters at the bottom of the frame, the present invention has the effect of easily moving the slit die tolerance measurement system to the desired position.

[0047] Furthermore, by installing multiple anti-vibration pads between the base unit and the frame, the present invention has the effect of preventing vibration from being transmitted from the ground at the measurement location to the base unit during the tolerance period between the die lip and the pad of the measuring slit die, thereby enabling accurate measurement.

[0048] Furthermore, by installing a first stop and a second stop on the upper surface of the base unit, the present invention has the effect of easily aligning various types of slit mold heads with different widths. Attached Figure Description

[0049] Figure 1 This is a diagram illustrating the slit die tolerance measurement system according to the present invention.

[0050] Figure 2 yes Figure 1 An enlarged view of part A in the image.

[0051] Figure 3 Viewed from the opposite side Figure 2 The diagram shown is a partial one.

[0052] Figure 4 yes Figure 2 Enlarged view of the first stop component in the middle.

[0053] Figure 5 yes Figure 1 An enlarged view of part B in the image.

[0054] Figure 6 It shows that it is installed in Figure 1 A diagram of the display unit in the electrical component box.

[0055] Figure 7 and Figure 8 This is a diagram showing a single die head measured by the slit die head tolerance measurement system according to the present invention, wherein... Figure 7 Showing the condition before assembly, Figure 8 This shows the assembled state.

[0056] Figure 9 and Figure 10 This is a diagram showing a dual-die head measured by the slit die head tolerance measurement system according to the present invention, wherein... Figure 9 Showing the condition before assembly, Figure 10 This shows the assembled state.

[0057] Figure 11 This is a diagram showing the measurement positions of a single die head, used to compare the measurement accuracy of a conventional slit die head tolerance measurement system with that of the slit die head tolerance measurement system according to the present invention. Detailed Implementation

[0058] The advantages and features of the present invention, as well as the methods for achieving these advantages and features, will become apparent from the following detailed description of embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various other forms. These embodiments are provided only to make the disclosure of the invention complete and to fully illustrate the scope of the invention to those skilled in the art. The invention is defined only by the scope of the appended claims. Therefore, in some embodiments, well-known process steps, well-known apparatus structures, and well-known technologies are not described in detail to avoid obscuring the invention. Throughout the specification, the same reference numerals denote the same elements.

[0059] In the accompanying drawings, the thickness of layers and regions may be exaggerated for clarity. Throughout the specification, similar parts are indicated by the same reference numerals. When an element such as a layer, film, region, or plate is referred to as being "on top of" another element, it may be directly disposed on the other element, or one or more intermediate elements may exist between them. Conversely, when a portion is referred to as being "directly situated" "on" another portion, it means that there is no intermediate portion between them. Similarly, when an element is referred to as being "below" another element, it may be directly situated below the other element, or intermediate elements may exist between them. Conversely, when a portion is referred to as being "directly situated" "below" another portion, it means that there is no intermediate portion between them.

[0060] Figure 1 This is a diagram illustrating the slit die tolerance measurement system according to the present invention. Figure 2 It is shown Figure 1 An enlarged view of part A in the image. Figure 3 This shows the view from the opposite side. Figure 2 The diagram shows the state of the portion shown.

[0061] The slit die tolerance measurement system 10 according to the present invention is a system for measuring the tolerance between the die lip and the gasket of a slit die 20 including a gasket configured to discharge ink, and includes an electrical component box 100, a base unit 300, a sensor unit 400, and a drive unit 500.

[0062] The tolerance to be measured can be defined as the distance between the end of the die head and the end of the gasket at the die lip of the slit die head 20.

[0063] The base unit 300 is formed in a flat shape, and the slit die head 20 is placed on its upper surface.

[0064] The base unit 300 can be configured as two levels.

[0065] In this way, the slit die 20 can be placed on the upper surface of the higher position in the base unit 300, which is stepped in this way, and the drive unit 500, described later, can be placed on the upper surface of the lower position.

[0066] In this way, the drive unit 500, which moves or rotates the sensor unit 400 to various positions, is positioned at the lower position in the two-stage base unit 300, so the tolerance between the die lip and the gasket of the slit die head 20 can be easily measured through the sensor unit 400.

[0067] A frame 200 may be provided at the lower part of the base unit 300 to support the base unit 300, so that the base unit 300 is positioned at a predetermined height above the ground.

[0068] This frame 200 can be configured to have a generally rectangular shape.

[0069] Multiple supports 220 are installed at the bottom of the frame 200, and the supports 220 can be configured to be height adjustable.

[0070] For example, a threaded hole is formed on the inner surface of the frame 200 corresponding to the support member 220, and a thread corresponding to the thread is formed on the outer surface of the vertically arranged long portion of the support member 220, so that when the support member 220 is rotated, the long portion of the support member 220 becomes longer or shorter, thereby adjusting the height of the frame 200.

[0071] Therefore, the height of the base unit 300 can be freely adjusted by adjusting the support member 220 as needed, and the base unit 300 can be easily adjusted horizontally.

[0072] In addition, multiple casters 210 can be installed at the bottom of the frame 200.

[0073] Therefore, the slit die tolerance measurement system 10 can be easily moved to the desired position.

[0074] Meanwhile, multiple anti-vibration pads 600 can be installed spaced apart between the base unit 300 and the frame 200. This is to prevent vibration from being transmitted from the ground at the measurement location to the base unit 300 when measuring the tolerance between the die lip and the pad of the slit die 20, thereby enabling accurate measurement.

[0075] The sensor unit 400 is arranged on one side of the base unit 300 to measure the tolerance between the die lip of the slit die head 20 and the gasket, and may include a laser sensor.

[0076] The sensor unit 400 can irradiate laser light onto the ends of the die lip and the gasket of the slit die head 20, and detect the laser light reflected from the surfaces of the die lip and the gasket of the slit die head 20.

[0077] The drive unit 500 is mounted on the base unit 300 and is configured to drive the sensor unit 400 to move vertically, longitudinally, and laterally and to rotate in a predetermined direction.

[0078] The drive unit 500 is configured to include a first direction drive unit 510, a second direction drive unit 520, a third direction drive unit 530, and a rotation unit 540.

[0079] Assuming the longitudinal direction of the base unit 300 is the first direction, the first direction driving unit 510 is configured to make the sensor unit 400 move linearly along the first direction.

[0080] The first direction drive unit 510 may include: a first fixing plate 511, which is formed along the first direction to have a predetermined length and is fixed to the upper surface of the base unit 300; a first guide member 512, which is formed along the first direction to have a predetermined length and is fixed to the first fixing plate 511, and wherein a predetermined guide groove is formed; a first slider 513, which moves linearly along the guide groove of the first guide member 512; and a first drive motor 514, which is disposed on one side of the first guide member 512 to provide driving force to the first slider 513.

[0081] The second direction drive unit 520 is configured to move the sensor unit 400 linearly along a second direction, which is a direction perpendicular to the first direction on the same plane.

[0082] The second direction drive unit 520 may include: a second fixing plate 521, which is formed along the second direction to have a predetermined length and is fixed to the upper surface of the first slider 513; a second guide member 522, which is formed along the second direction to have a predetermined length and is fixed to the second fixing plate 521, and wherein a predetermined guide groove is formed; a second slider 523, which moves linearly along the guide groove of the second guide member 522; and a second drive motor 524, which is disposed on one side of the second guide member 522 to provide driving force to the second slider 523.

[0083] The third-direction drive unit 530 is configured to move the sensor unit 400 in a straight line along a third direction, which is the direction of vertical movement from the top of the base unit 300.

[0084] The third-direction drive unit 530 may include: a third fixed plate 531, which includes a third horizontal member 531a fixed to the upper surface of the second slider 523 and a third vertical member 531b formed along a third direction from the upper surface of the third horizontal member 531a to have a predetermined length; a third guide member 532, which is formed along a third direction to have a predetermined length and fixed to the third vertical member 531b, and wherein a predetermined guide groove is formed; a third slider 533, which moves linearly along the guide groove of the third guide member 532; and a third drive motor 534, which is disposed on one side of the third guide member 532 to provide driving force to the third slider 533.

[0085] The rotating part 540 is configured to rotate the sensor unit 400 about an axis parallel to the first direction at a predetermined angle.

[0086] The rotating part 540 may include: a fourth fixing plate 541 fixed to the third slider 533; a rotating base plate 542 arranged along the second direction and fixed at one end to the fourth fixing plate 541; a rotating motor 543 arranged on one side of the rotating base plate 542; a rotating plate 544 connected to the sensor unit 400 to receive driving force from the rotating motor 543 and rotate the sensor unit 400 by a predetermined angle; and a sensor unit fixing plate 545, to which the sensor unit 400 is fixed, and one end of the sensor unit fixing plate 545 is connected to the rotating plate 544.

[0087] Preferably, the rotary motor 543 is a stepper motor.

[0088] The electrical component box 100 may include a control unit and a display unit. The control unit transmits electrical signals to the drive unit 500 and controls the drive unit 500. The display unit receives measured values ​​from the sensor unit 400 as electrical signals and displays the measured values.

[0089] The control unit stores the vertical position, longitudinal position, lateral position, and rotation angle of the slit mold head 20 as data in the form of a formula according to each model, and transmits the stored data to the drive unit 500, so that the sensor unit 400 can automatically perform measurements.

[0090] The electrical signal transmission between the control unit and the drive unit 500 can be performed in a wired or wireless manner.

[0091] Figure 4 yes Figure 2 Enlarged view of the first stop component in the middle. Figure 5 yes Figure 1 An enlarged view of part B in the image.

[0092] A first stop 310, shaped like the letter L, can be installed on the upper surface of the base unit 300, so that the lower edge of one side of the slit die 20 is aligned; and a second stop 320, shaped like a straight line, can be installed on the upper surface of the base unit 300, so that the lower edge of the other side of the slit die 20 is aligned in a straight line with the lower edge of the side of the slit die 20 along the length direction of the base unit 300.

[0093] The first stop 310 and the second stop 320 may be formed of polyetheretherketone (PEEK).

[0094] By mounting the first stop 310 and the second stop 320 on the upper surface of the base unit 300 in this manner, various types of slit molds with different widths can be easily aligned.

[0095] Figure 6 It shows that it is installed in Figure 1A diagram of the display unit in the electrical component box.

[0096] In the slit die tolerance measurement system 10 according to the present invention, the electrical component box 100 includes a control unit and a display unit. The control unit transmits electrical signals to the drive unit 500 for control, and the display unit receives the value measured by the sensor unit 400 as an electrical signal and displays the value.

[0097] In addition, various cables connected to the drive unit 500 are housed in the electrical component box 100.

[0098] The sensor unit 400 is automatically moved by the drive unit 500 along a first direction (the longitudinal direction of the base unit 300), a second direction (a direction perpendicular to the first direction on the same plane), and a third direction (a direction that moves up and down from the top of the base unit 300), or rotated at a predetermined angle about an axis parallel to the first direction.

[0099] For example, the sensor unit 400 can be moved in 0.01 mm or rotated in 0.01° units in the first, second, and third directions by the drive unit 500.

[0100] Specifically, the values ​​of the first direction, the second direction, and the third direction of the position to be measured in the slit mold 20, the rotation angle, and the measurement time can be specified and stored in the control unit.

[0101] By specifying the measurement position and angle for each mold head model, automatic measurement can be performed without additional adjustment of the measurement position during subsequent measurements.

[0102] If the formula is initially registered for each mold head model, the subsequent measurement time is approximately 2 minutes (excluding the time required to register the initial formula), thus significantly reducing the measurement time.

[0103] In this way, the present invention can shorten the measurement process time and improve measurement reproducibility and accuracy by automating the process and developing formulas for each die head model.

[0104] Figure 7 and Figure 8 This is a diagram showing a single die head measured by the slit die head tolerance measurement system according to the present invention, wherein... Figure 7 Showing the condition before assembly, Figure 8 This shows the assembled state.

[0105] exist Figure 7 In the text, ① indicates the tolerance (offset) between the die lip end of the die lower plate and the fastened shim after the shim is fastened to the die lower plate and before the die upper plate is assembled.

[0106] exist Figure 8 In the diagram, ① represents the tolerance (offset) between the end of the die lip on the lower die plate and the fastened shim, ② represents the tolerance (offset) between the end of the die lip on the upper die plate and the fastened shim, and ③ represents the alignment between the upper and lower die plates at the end of the die lip.

[0107] Figure 9 and Figure 10 This is a diagram showing a dual-die head measured by the slit die head tolerance measurement system according to the present invention, wherein... Figure 9 Showing the condition before assembly, Figure 10 This shows the assembled state.

[0108] exist Figure 9 In the text, ① indicates the tolerance (offset) between the die lip end of the die head middle plate and the connected upper plate shim after the upper plate shim is connected to the die head middle plate and before the upper plate of the die head is assembled.

[0109] exist Figure 9 In the diagram, ② represents the tolerance (offset) between the die lip end of the die lower plate and the connected die lower plate shim after the upper plate shim is connected to the die lower plate and before the middle / upper plate of the die head is assembled.

[0110] exist Figure 10 In the diagram, ① represents the tolerance (offset) between the end of the die lip of the middle plate of the die head and the connected upper plate shim, and ② represents the tolerance (offset) between the end of the die lip of the lower plate of the die head and the connected lower plate shim.

[0111] exist Figure 10 In the diagram, ③ represents the alignment between the upper plate and the middle plate at the end of the mold lip, and ④ represents the alignment between the middle plate and the lower plate at the end of the mold lip.

[0112] Figure 11 This is a diagram showing the measurement positions of a single die head, used to compare the measurement accuracy of a conventional slit die head tolerance measurement system with that of the slit die head tolerance measurement system according to the present invention.

[0113] Using a single mold head as a reference, measure the tolerance (offset) before assembly, the tolerance (offset) after assembly based on the upper and lower mold plates, and the alignment of the upper and lower mold plates.

[0114] like Figure 11 As shown, a total of 18 points were measured at the offset position in the mold head / gasket, with 2 points measured for each spacer.

[0115] The same tolerance (offset) positions were measured using an existing portable slit die tolerance measurement system and the slit die tolerance measurement system according to the present invention, and compared as shown in Tables 1 and 2 below.

[0116] The deviations in the tolerance (offset) measurement results of both the existing measurement system and the measurement system of the present invention are within ±8 μm.

[0117] Considering the current tolerance (offset) level (approximately 100 μm), both the existing measurement system and the measurement system of this invention are considered to have high measurement reliability.

[0118] [Table 1] Measurement results using an existing portable slit die tolerance measurement system

[0119] Using the measurement system of the present invention, a second measurement is performed at the same tolerance measurement location of the same slit die head as measured by an existing measurement system.

[0120] The result of re-measuring the tolerance (offset) using the measurement system of the present invention is that all deviations are within ±2 μm.

[0121] [Table 2] Measurement results of the slit die head tolerance measurement system according to the present invention

[0122] [Explanation of reference numerals in the attached figures]

[0123] 10: Slit Die Head Tolerance Measurement System

[0124] 100: Electrical component box

[0125] 200: Framework

[0126] 300: Base unit

[0127] 400: Sensor Unit

[0128] 500: Drive Unit

[0129] 510: First Directional Drive Unit

[0130] 520: Second Directional Drive Unit

[0131] 530: Third-party driver department

[0132] 540: Rotating part

Claims

1. A slit die tolerance measurement system, the slit die including a gasket configured to discharge ink, and the slit die tolerance measurement system being used to measure the tolerance between the die lip of the slit die and the gasket. The slit die head tolerance measurement system includes: A base unit, wherein the slit die head is disposed on the upper surface of the base unit; A sensor unit is disposed on one side of the base unit to measure the tolerance between the die lip of the slit die head and the gasket; A drive unit, mounted on the base unit, drives the sensor unit to move vertically, longitudinally, and laterally, and to rotate in a predetermined direction; as well as An electrical component box includes a control unit and a display unit. The control unit is configured to transmit electrical signals to the drive unit to control the drive unit, and the display unit is configured to receive values ​​measured by the sensor unit as electrical signals and display the values.

2. The slit die tolerance measurement system according to claim 1, wherein, A frame is provided at the lower part of the base unit to support the base unit, so that the base unit is positioned at a predetermined height above the ground.

3. The slit die tolerance measurement system according to claim 2, wherein, Multiple support members are installed at the lower end of the frame, and The support is configured to be height adjustable.

4. The slit die tolerance measurement system according to claim 2, wherein, Multiple vibration damping pads are installed spaced apart from each other between the base unit and the frame.

5. The slit die tolerance measurement system according to claim 1, wherein, The tolerance is defined as the distance between the end of the die head and the end of the gasket at the die lip of the slit die head.

6. The slit die tolerance measurement system according to claim 1, wherein, A first stop, shaped like an L, is mounted on the upper surface of the base unit, aligning the lower edge of one side of the slit die head. A second stop, formed in a straight line shape, is installed such that the lower edge of the other side of the slit die is aligned in a straight line with the lower edge of one side of the slit die on the upper surface of the base unit along the longitudinal direction of the base unit.

7. The slit die tolerance measurement system according to claim 6, wherein, The first stop and the second stop are formed of polyetheretherketone (PEEK).

8. The slit die tolerance measurement system according to claim 1, wherein, The vertical position, longitudinal position, lateral position, and rotation angle of the slit die head are stored as data in the form of a formula for each model in the control unit, and the control unit is configured to transmit the stored data to the drive unit so that the sensor unit can automatically perform measurements.

9. The slit die tolerance measurement system according to claim 1, wherein, The driving unit includes: A first direction driving unit is configured to cause the sensor unit to move linearly along the first direction, assuming that the longitudinal direction of the base unit is the first direction. A second direction driving unit is configured to cause the sensor unit to move linearly along a second direction, which is a direction perpendicular to the first direction on the same plane. A third-direction drive unit is configured to cause the sensor unit to move linearly along a third direction, the third direction being the direction of vertical movement from the top of the base unit; and A rotating part is configured to rotate the sensor unit about an axis parallel to the first direction at a predetermined angle.

10. The slit die tolerance measurement system according to claim 9, wherein, The first direction drive unit includes: A first fixing plate is formed along the first direction to have a predetermined length and is fixed to the upper surface of the base unit; A first guide member is formed along the first direction to have a predetermined length and is fixed to the first fixing plate, and a predetermined guide groove is formed in the first guide member; A first slider, configured to move linearly along a guide groove of the first guide member; and A first drive motor is disposed on one side of the first guide member to provide driving force to the first slider.

11. The slit die tolerance measurement system according to claim 10, wherein, The second direction drive unit includes: The second fixing plate is formed along the second direction to have a predetermined length and is fixed to the upper surface of the first slider; The second guide member is formed along the second direction to have a predetermined length and is fixed to the second fixing plate, and a predetermined guide groove is formed in the second guide member; A second slider, configured to move linearly along a guide groove of the second guide member; and A second drive motor is disposed on one side of the second guide member to provide driving force to the second slider.

12. The slit die tolerance measurement system according to claim 11, wherein, The third-party drive unit includes: The third fixing plate includes a third horizontal member fixed to the upper surface of the second slider and a third vertical member formed from the upper surface of the third horizontal member along the third direction to have a predetermined length. A third guide member is formed along the third direction to have a predetermined length and is fixed to the third vertical member, and a predetermined guide groove is formed in the third guide member; A third slider, configured to move linearly along a guide groove of the third guide member; and A third drive motor is disposed on one side of the third guide member to provide driving force to the third slider.

13. The slit die tolerance measurement system according to claim 12, wherein, The rotating part includes: A fourth fixing plate is fixed to the third slider; A rotating substrate, wherein the rotating substrate is disposed along the second direction and one end is fixed to the fourth fixing plate; A rotary motor is disposed on one side of the rotary base plate; A rotating plate, configured to receive driving force from the rotating motor and connected to the sensor unit, to rotate the sensor unit by a predetermined angle; and A sensor unit fixing plate is provided, wherein the sensor unit is fixed to the sensor unit fixing plate, and one side of the sensor unit fixing plate is connected to the rotating plate.

14. The slit die tolerance measurement system according to claim 1, wherein, The sensor unit includes a laser sensor.

15. The slit die tolerance measurement system according to claim 14, wherein, The sensor unit is configured to irradiate a laser onto the die lip of the slit die head and the end of the gasket, and to detect the laser reflected from the surfaces of the die lip and the gasket of the slit die head.

Images