KR101123629B1 - Device for Roll Pattern - Google Patents

Abstract

The present invention relates to a roll mold manufacturing apparatus that can determine whether the machining surface defects in real time while manufacturing a roll mold, the present invention is a body mounted so that the roll mold is rotated, in the axial direction of the roll mold mounted on the body Provided is a roll mold manufacturing apparatus which is conveyed and comprises a measuring unit for measuring the machining precision of the surface of the roll mold processed by the bite and the bite for processing the surface of the roll die.

Lens sheet, roll mold, processing precision, defect occurrence, real time measurement

Description

Roll mold making device {Device for Roll Pattern}

The present invention relates to a roll mold making apparatus that can determine whether the machining surface defects in real time while manufacturing a roll mold.

In recent years, with the spread of liquid crystal display devices and the like, the demand for lens sheets used for backlights of liquid crystal panels is increasing. In addition to Fresnel lenses, this type of lens sheet includes a lenticular lens sheet, a cross lenticular lens sheet, a prism sheet, and the like.

In order to manufacture the lens sheet as described above, a method of producing a lens sheet as a roll mold by producing a roll mold having a shape symmetrical with the shape to be formed is generally used.

In addition, the roll mold is manufactured in a manufacturing apparatus such as a lathe.

The apparatus for manufacturing a roll die is fixed to rotate the roll die, and the carriage equipped with the bite is configured to process the surface of the roll die while moving in the direction of the rotation axis of the roll die.

However, when machining the surface of the roll die, defects such as scratches due to burrs, etc. may occur on the surface of the roll die for various reasons. To ensure that it was done properly, once the work was done, the machining surface was checked, and if a serious defect or manufacturing error was found, the entire roll mold had to be reworked.

Therefore, an object of the present invention is to solve the above problems, and an object of the present invention is to provide a roll mold fabrication apparatus capable of confirming in real time whether a roll mold is accurately processed.

In order to solve the above problems, the present invention is a body that is mounted so that the roll mold is rotated, is transferred in the axial direction of the roll mold mounted on the body, the machining by the bite and the bite for processing the surface of the roll mold Provided is a roll mold making apparatus comprising a measuring unit for measuring a machining precision of a roll mold surface to be used.

The measuring unit may include a transmitter for transmitting a laser toward the surface of the roll mold, and a receiver for receiving a laser beam reflected from the surface of the roll mold.

The measurement unit may be deflected in a predetermined width range along the rotation axis direction of the roll mold to scan the processed surface of the roll mold.

In addition, the transmitting unit of the measuring unit may be inclined to face the processing surface of the roll mold.

The measuring unit may move in the direction of the rotation axis of the roll die.

The measuring unit may be provided in plurality.

The controller may further include a controller configured to correct the scanned information as the rotational speed of the roll die, the feed rate of the measuring unit, and the deflection speed of the laser.

Position measuring unit for calculating the position of the point measured by the measuring unit may be further provided.

The position measuring unit may include an angular displacement detector for measuring the roll mold rotation angle of the point measured by the measuring unit, an axial displacement detector for measuring the coordinates of the longitudinal direction of the roll mold rotation axis of the point measured by the measuring unit. .

In addition, a display for displaying the information measured by the measuring unit may be further provided.

In addition, a storage unit for storing the information measured by the measuring unit and the information measured by the position measuring unit may be further provided.

In addition, the roll die manufacturing apparatus of the present invention may comprise a camera for photographing the surface to be processed by the bite, a reading unit for confirming whether the processing surface defects with the image information photographed by the camera.

And, the camera may be made to photograph the roll mold surface immediately after being processed by the bite.

The camera may be adapted to move along the transfer of the bite.

In addition, an illumination device for illuminating the processing surface photographed by the camera may be further provided.

The lighting device may be configured to illuminate light at an oblique angle with respect to the processing surface.

The reading unit may be configured to include a display that shows an image captured by the camera to a user.

The reading unit may be configured to recognize a portion having a difference in illuminance from the surroundings as a defective portion.

In addition, the position measuring unit for calculating the position of the point measured by the measuring unit and the camera may be further provided.

The position measuring unit may include an angle displacement detector for measuring a roll mold rotation angle between a point measured by the measuring unit and a point photographed by a camera, and a roll mold rotation axis in a longitudinal direction of a point measured by the measurement unit and a point photographed by a camera. It may comprise an axial displacement detector for measuring the coordinates.

A display for displaying the information measured by the measuring unit and the image taken by the camera may be further provided.

A storage unit for storing the information measured by the measuring unit, the image taken by the camera and the information measured by the position measuring unit may be further provided.

According to the roll die manufacturing apparatus of the present invention, the machining precision of the machined surface of the roll die can be measured in real time, and if a wrongly processed part occurs, it can be detected in real time and immediately take appropriate measures to further improve the machining precision. Can be.

In addition, it is possible to know in real time the occurrence and location of the parts that are not done correctly, so that you can quickly take further action.

In addition, it is possible to check in real time whether there is a defect on the surface immediately after the processing of the roll die, so that appropriate measures can be taken immediately when a defect occurs, thereby preventing the occurrence of defects continuously.

In addition, the position where the defect has occurred can be known, and it is easy to take action on the defective portion.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

Roll mold manufacturing apparatus according to an embodiment of the present invention, as shown in Figure 1, the body 100 and the carriage 100 provided in the body 100 may be made to include a camera 160 and the reading unit have.

The body 100 is a component that is mounted so that the roll mold 180 is rotated. The body 100 is the main shaft 110, tailstock 120, the carriage 130 is disposed. The roll mold 180 is rotatably supported by the main shaft 110 and the tail stock 120.

The headstock 110 is disposed at one end in the longitudinal direction of the body 100. The headstock 110 includes a main shaft 112, a chuck 114 attached to the front end of the main shaft 112, and a servomotor 116 for driving the main shaft. The chuck 114 grips the rotation shaft of the roll mold 180 and transmits the rotation of the main shaft 112 to the roll mold 180. In the main shaft 110, the servo motor 116 is provided to drive the main shaft 112 to rotate the roll mold 180.

The tailstock 120 is disposed at a position opposite to the main shaft 110 of the body 100. A guide surface (not shown) is installed on the upper surface of the body 100 so that the tail stock 120 may be moved. In addition, the tailstock 120 is provided with a main shaft 122 that rotates freely and a chuck 124 for fixing the other end of the roll mold 180 to rotate the roll mold 180 of various lengths. It can be made to support.

As shown in FIG. 2, the carriage 130 may include a saddle 132 provided to move in the rotational axial direction of the roll mold 180. The saddle 132 is provided with a bite 134 for processing the surface of the roll mold 180. In addition, the bite 134 may be made to be replaced according to the shape and the degree of wear is processed on the surface of the roll mold (180).

Then, the measuring unit 140 for measuring the processing precision of the surface of the roll mold processed by the bite 134 is provided.

The measuring unit 140 may be provided in the carriage 130 or the saddle 132. Therefore, as the carriage 130 moves in the direction of the rotational axis of the roll mold, a point at which the bite 134 processes the surface of the roll mold is also moved, and accordingly, the measurement unit provided in the carriage 130 140 may also be moved.

 Accordingly, the measurement unit 140 may measure the processing precision of the surface of the roll mold processed by the bite 134 while being moved in the direction of the rotation axis of the roll die according to the movement of the bite 134.

In addition, as shown in FIG. 3, the measurement unit 140 measures the values of the peaks 184a, the valleys 184b, and the pitches 184c of the processed roll die surface 184, thereby determining It is a component to measure machining accuracy.

The measurement unit 140 may be configured to measure the processing precision of the roll mold surface 184 using a laser sensor. The measurement unit 140 may include a transmitter 142 for transmitting a laser toward the surface of the roll mold, and a receiver 144 for receiving a laser beam reflected from the surface of the roll mold.

In addition, the laser beam transmitted from the transmitting unit 142 may be configured to be deflected by a predetermined angle along the rotation axis of the roll mold to scan the surface of the roll mold with a predetermined width.

On the other hand, as shown in Figure 4, the roll die is rotated in the circumferential direction of the rotation axis (Vr), the measuring unit 140 is moved in accordance with the movement of the bite 134 and at the same time deflected in the axial direction. (Va)

Therefore, even if the laser of the measuring unit 140 scans in the direction of the rotation axis of the roll die, the scan is actually made in the diagonal direction Vs of the roll die surface 184.

Therefore, the scan result of the measurement unit is not a straight line as shown in Figure 5 to obtain a scan result of the form inclined to one side.

Therefore, a control unit (not shown) may be further provided to restore the inclined measurement unit scan result to its original form. The control unit may be provided in the form of a microcomputer on one side of the body 100, or may be provided in the form of a PC connected to the body 100.

That is, as shown in Figure 4, the vertical displacement of the laser scan result is determined according to the rotational speed of the roll die, the radius of the roll and the scan time, the horizontal displacement is the feed rate of the carriage and the laser is deflected It depends on the speed and scan time.

Therefore, the controller is configured to calculate the peak, valley, and pitch values by correcting the inclined scan result based on the above information as shown in FIG. 6.

7 is a cross-sectional view illustrating a state in which a plurality of measuring units are provided, and FIG. 8 is a diagram illustrating a trajectory of a laser scanned on the roll surface by a plurality of measuring units.

As shown in FIG. 7, the measuring unit 140 may be provided in plural along the circumference of the roll mold. Of course, the plurality of measuring units 140 may also be provided to move in accordance with the movement of the byte 134. In this case, a separate mount (not shown) is moved in the direction of the rotation axis of the roll die 180 according to the movement of the bite 134, and a plurality of measurement units 140 may be disposed along the circumference of the roll die. The component may be provided.

If the measuring unit 140 is provided in plural as described above, as shown in Figure 8 can be measured for the precision of the surface processed in more places, so that the reliability of the measured processing accuracy of the roll die is improved.

 Meanwhile, as illustrated in FIG. 9, the measurement unit 140 may be inclined such that the laser beam is perpendicular to the processed surface of the roll mold.

If the laser beam transmitted from the inclined measuring unit 140 is arranged to be perpendicular to the machined surface of the roll mold, the measuring unit 140 may have valleys and peaks 184a of the machined surface of the roll mold. When measuring 184b and pitch 184c, the measured result tends to change greatly like the shape of the stairs, and thus it is more convenient to interpret the measured result.

In addition, the roll mold manufacturing apparatus according to the present invention may be further provided with a position measuring unit. The position measuring unit is a component that measures the position of the point measured by the measuring unit 140.

The roll mold 180 rotates, the bite 134 processes the surface while the roll mold 180 moves in the direction of the rotation axis, and the measurement unit 140 moves along the movement of the bite 134. Therefore, in order to know the position of the point measured by the measuring unit 140, it is necessary to know the rotation angle of the roll mold 180, the current position of the bite 134. Accordingly, the position measuring unit measures an angle displacement detector 118 measuring the rotational angle of the roll die 180 and how long the roll die 180 is rotated, and coordinates in the longitudinal direction of the roll die rotation axis at the point where the camera 160 is photographed. And an axial displacement detector (not shown) to measure.

As shown in FIG. 1, the angular displacement detector 118 is provided at one side of the servomotor 116 to measure the rotational angle of the roll mold 180 by calculating an amount of rotation of the servomotor 116. Can be.

In addition, although the axial displacement detector is not shown in the drawing, when the measuring unit is provided in the carriage, the carriage 130 or the driving unit (not shown) for transporting the carriage 130 is provided for reciprocating. Base 130 may be provided to measure the amount moved. Of course, if the measurement unit is mounted in a separate mount may be provided to measure the movement position of the mount.

On the other hand, when the value of the surface of the roll mold measured by the measuring unit 140 is out of a predetermined range, it may be made to further include an alarm unit (not shown) to alert the user. Such an alarm may be made of an alarm and a flashing light. In addition, the alarm unit may be provided in the form of a microcomputer on one side of the body, it may be provided in the form of a PC connected to the body.

In addition, the numerical value measured by the measuring unit and the position of the measured point are configured to be displayed on the display 150.

As shown in FIG. 10, the display 150 displays measurement information 152 measured by the measurement unit 140 and location information 154 of a measured point. Job information 156 may be displayed.

The display 150 as described above may be provided in the body, or may be provided in the form of a PC connected to the body.

In addition, a storage unit (not shown) that stores measurement data such as numerical values measured by the measurement unit 140 and position information of the measurement position may be provided. The storage unit may be formed in the form of a PC or the like embedded in the body 100 or connected to the body 100, and may also be made in the form of a detachable memory such as a USB memory attached to or detached from the body or PC.

Therefore, the machining precision can be measured in real time during operation, and if an error of machining precision occurs due to wear of the bite 134 or a transfer error or burr of the bite 134, the error can be measured in real time. This can be corrected immediately upon detection, which maximizes machining accuracy.

In addition, after all the work is completed through the display 150, while looking at the measurement data stored in the storage unit to check the wrong working part can be reworked the surface of the roll mold of the position can be produced a more precise roll mold.

Then, the camera 160 for photographing the surface immediately after the processing of the roll mold 180 is processed by the bite 134 may be further provided.

The camera 160 is provided to photograph a point immediately after being processed by the bite 134 on the surface of the roll mold 180, and a point processed by the bite 134 on the surface of the roll mold 180 is Since the position is changed while the carriage 130 moves, the camera 160 may also be made to move the photographing point.

For example, as shown in FIG. 11, the camera 160 is provided near the bite 134 of the carriage 130 and moved by the movement of the carriage 130. It may be provided so that it can be made to photograph the processing surface 184 immediately after being processed by.

In addition, the lighting device 162 for illuminating the point photographed on the surface of the roll mold 180 may be further provided.

As shown in FIG. 12, the lighting device 142 may be formed of a light emitting device such as a lamp provided around the camera. Since the point photographed by the camera 160 moves as the carriage 130 moves, the lighting device 162 may also be provided to move together as the carriage 130 moves. To this end, the lighting device 162 may be provided in the vicinity of the camera 160 or the carriage 130. Of course, the lighting device 162 may be provided in a separate component (not shown) that moves along the movement of the carriage, not the carriage.

In addition, the lighting device 162 is preferably made to illuminate the light at an oblique angle to the processing surface 184 at the point where the surface of the roll mold 180 is photographed.

When a defect such as a scratch or a burr occurs on the machining surface of the roll die 180, the surface of the portion 186 where the defect occurs has an angle different from that of the surrounding defect-free machining surface, as shown in FIG. 13. The angle of the reflected light is different. Therefore, when the light is irradiated at an oblique angle to the processed surface of the roll mold, the angle of the light reflected from the defect surface 186 becomes larger than the angle of the light reflected from the defect-free surface, the camera A difference in the amount of light received at 160 may be shown, and thus, a difference in illuminance may be shown.

The reading unit is a component for confirming whether or not the processing surface is coupled to the image information photographed by the camera 160.

As illustrated in FIG. 14, the reading unit may include a display 150 that shows image information captured by the camera 160 to a user. The display may be a display displaying the information measured by the measuring unit 140 described above, or may be a separate display.

Therefore, when the user observes the working condition through the display 150 and the part that appears to be a defect on the display 150 is displayed, the user can quickly adjust the work speed, change the byte, or adjust the action. Can be taken.

In addition, the reading unit may be configured to alert an operator by determining whether a defect occurs in the processing surface of the roll mold 180 photographed by the camera 160. Whether or not the reading unit generates a defect on the machining surface 184 of the roll mold 180 may be configured to recognize a portion where the ambient light and the roughness are significantly different as a point of occurrence of the defect.

Here, since the degree of roughness that can be recognized as a defect occurrence may vary depending on the processing form of the surface of the roll mold 180, it is not specific in the description of the present embodiment, but may be understood by those skilled in the art.

In addition, the position measuring unit may be configured to measure the position of the point photographed by the camera 160.

That is, the rotation angle of the roll mold 180 is detected by the angle displacement detector 118 of the position measuring unit, and the roll mold rotation axis of the point 182 captured by the camera in the axial displacement detector. It can be made to measure the longitudinal coordinate of.

Therefore, since the camera 160 is provided to photograph the surface immediately after the processing of the roll mold 180 processed by the bite 134 mounted on the carriage 130, the position measuring unit also includes the roll mold ( By measuring the rotated angle of the 180 and the moved amount of the carriage 130, it is possible to calculate the position of the point 182 taken by the camera 160 immediately after being processed by the bite 134.

In addition, the position of the photographed spot measured by the position measuring unit may be made to be displayed on the display 150 as shown in FIG. 14.

The image captured by the camera 160 and the location information of the photographed point may be provided in the storage unit. Accordingly, the image captured by the camera 160 is stored in the storage unit, and after the work is completed, the operator can easily reproduce the image through the display 150 to check whether the processing surface 184 has a defect.

In addition, the display 150 also displays the position information 154 of the point currently displayed on the display 150, so that the position of the defect occurrence point identified in the display 150 is located in the actual roll mold 180. You can see it immediately.

In addition, the storage unit may separately record only a part determined as a defect occurrence point in the reading unit so that an operator can quickly find only a defect occurrence point.

As described above, the preferred embodiments of the present invention have been described, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope thereof has ordinary skill in the art. It is obvious to them. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

1 is a front view showing a roll mold manufacturing apparatus according to an embodiment of the present invention;

2 is a perspective view of the carriage of FIG. 1;

3 is a cross-sectional view showing the surface of the roll mold processed by the roll mold manufacturing apparatus of FIG.

4 is a perspective view illustrating a trajectory of a roll mold mounted to the roll mold fabrication apparatus of FIG. 1 and a laser scanning surface of the roll mold;

FIG. 5 is a schematic diagram schematically showing an image of a result of scanning the roll mold surface of FIG. 4 with a measuring unit; FIG.

FIG. 6 is a schematic diagram schematically illustrating an image of a result of correcting the scan image of FIG. 5; FIG.

7 is a cross-sectional view showing a state in which a plurality of measuring units are provided;

8 is a developed view of a roll die showing the trajectory of a laser that a plurality of measurement units scan on the roll die surface;

9 is a cross-sectional view showing a state in which the measurement unit is inclined;

10 is a front view illustrating an example of a screen of a display on which measured values are displayed;

11 is a perspective view showing a roll mold processed by the bite;

12 is a perspective view showing a photographing unit according to an embodiment of the present invention;

13 is a cross-sectional perspective view showing the path of light reflected from the machined surface of the roll mold; And,

14 is a front view illustrating an example of a display on which a captured image is displayed.

Description of the Related Art [0002]

100: body 110: headstock

120: tailstock 130: shuttle

140: measurement unit 150: display

160: camera

Claims (18)

A body mounted to rotate the roll mold; A bite which is conveyed in the axial direction of the roll mold mounted to the body, and processes the surface of the roll mold to have a surface inclined with respect to the rotation axis of the roll mold; And The byte is transmitted to the surface of the roll mold and the transmitting laser is arranged to be inclined at right angles to the machined surface of the roll mold and the receiver is received receiving the laser reflected from the surface of the roll mold A measurement unit for measuring the processing precision of the surface of the roll mold processed by the; A camera for photographing the surface immediately after being processed by the bite; An illumination device that illuminates light at an oblique angle to a processing surface photographed by the camera; A reading unit which checks whether or not the processing surface is defective by the image information photographed by the camera; Roll mold making apparatus comprising a. delete The method of claim 1, The measuring unit is biased in a predetermined width range in the direction of the rotation axis of the roll die roll die manufacturing apparatus, characterized in that for scanning the processed surface of the roll die. delete The method of claim 1, The measuring unit is a roll die manufacturing apparatus, characterized in that for moving in the direction of the rotation axis of the roll die. The method of claim 1, Roll measuring apparatus, characterized in that provided with a plurality of measuring units. The method of claim 3, And a control unit for correcting the scanned information as the rotational speed of the roll die, the feed rate of the measurement unit, and the deflection speed of the laser. delete delete The method of claim 1, The camera is a roll mold manufacturing apparatus, characterized in that for moving along the transfer of the bite. delete delete The method of claim 1, The reading unit, Roll mold making apparatus comprising a display for showing the image taken by the camera to the user. The method of claim 1, The reading unit, Roll die manufacturing apparatus, characterized in that it recognizes the portion of the difference between the ambient and the roughness as a defective portion. The method of claim 1, Roll measuring apparatus further comprises a position measuring unit for calculating the position of the point measured and the point measured by the measuring unit and the camera. The method of claim 15, The position measuring unit, An angle displacement detector for measuring a roll mold rotation angle between a point measured by the measurement unit and a point photographed by a camera; An axial displacement detector configured to measure coordinates in a longitudinal direction of a roll mold rotation axis between a point measured by the measurement unit and a point photographed by a camera; Roll mold production apparatus characterized in that it comprises a. The method of claim 1, Roll manufacturing apparatus characterized in that it further comprises a display for displaying the information measured by the measuring unit and the image taken by the camera. The method of claim 15, Roll storage apparatus for storing the information measured by the measuring unit and the image taken by the camera and the information measured by the position measuring unit is further provided.

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