KR200374695Y1 - Measurement apparatus for footwear using laser sensor - Google Patents

Abstract

The present invention is a shoe measurement using a laser sensor having a cradle 20, the inner laser sensor unit 30, the outer laser sensor unit 50, the reflector plate 60, the control unit 80 and the measurement value processing unit 90 Provide the device. The cradle 20 has a flat top surface for placing the shoe 1 to be measured. The inner laser sensor unit 30 moves up and down the inner laser sensor 32 located above the shoe 1 to measure the inner dimension of the shoe 1 and through the inlet 2 of the shoe 1. It penetrates inside (1) and rotates the inner laser sensor 32. As shown in FIG. The outer laser sensor unit 50 vertically moves the outer laser sensor 52 located in front of the holder 20 to measure the outer dimension of the shoe 1. The reflector plate 60 is installed on the side of the holder 20 so as to correspond to the outer laser sensor 52 so that the laser light emitted from the outer laser sensor 52 is reflected on the shoe 1 and reflected from the shoe 1. The reflecting plate 62 for causing the reflected laser to be reflected by the outer laser sensor 50 is moved to the front and rear surfaces of the holder 20. The controller 80 controls the inner and outer laser sensor units 30 and 50 and the reflector plate 60 to measure the inner and outer dimensions of the shoe 1. The measured value processor 90 stores, calculates and displays the measured values input from the inner laser sensor 32 and the outer laser sensor 52.

Description

Shoe measuring device using laser sensor {MEASUREMENT APPARATUS FOR FOOTWEAR USING LASER SENSOR}

The present invention relates to a shoe measuring apparatus using a laser sensor, and more particularly to a shoe measuring apparatus using a laser sensor that can measure the inner and outer dimensions of the shoe using a laser.

The shoe assembly process in the industrial site adopts a conveyor system in which each process is connected in sequence, and manufactures out-sole, mid-sole, and in-sole from mixing of materials. And the upper is composed of a multi-step assembly of the sole. And since the majority of processes are performed by hand, the incidence of defective products is high, and a large difference occurs in product quality and productivity according to the skill of the operator. In addition, the measurement work to evaluate the quality and performance of the product has been used by the naked eye or a simple measuring tool in the past, but the interest of automatic measurement using various sensors is gradually increasing. Therefore, the need for a measuring device to find and compensate for problems in each process through accurate and rapid inspection of products is increasing.

Currently, the measurement device using the 3D scanning method or CCD is being studied on the outside of the shoe. However, the research on the measurement device inside the shoe is carried out by Nike co. There is no situation. Nike's shoe measuring device is installed and used in domestic companies that produce Nike's products, such a shoe measuring device is a contact length measuring device using a pneumatic cylinder to measure the state of the soft material of the shoe in the expanded state In addition to the large dimensional error, only the length of the shoe long axis is measured.

In order to improve such a problem, Korean Utility Model Publication No. 0223530 "Shoe size measuring device" proposes a device for measuring the dimensions of the shoe using a laser generating module consisting of a laser light emitting element and a light receiving element. Such a shoe size measuring device includes a laser generating module, a reflector, a transmission means, a scanning module, and a dimension determining module. The laser generation module is composed of a laser light emitting element and a light receiving element to emit or receive a laser. The reflector reflects the laser generated by the laser generating module so that the laser is directed toward the lower inner surface of the shoe or the laser reflected from the inner surface of the shoe is directed to the light receiving element of the laser generating module. The transmission means rotates and vibrates the reflector or the shoe itself so that the laser generated by the laser generation module can evenly irradiate the lower inner surface of the shoe. The scanning module scans the lower inner surface of the shoe in three dimensions from the time taken until the light is received after the laser generated by the laser generating module is changed to a path by the reflector and irradiated to the lower inner surface of the shoe. The dimension determining module determines the width dimension and the length dimension of the shoe from the geometric data on the inner surface of the shoe calculated by the scanning module.

However, such a shoe measuring apparatus using a laser sensor conventionally proposed has a disadvantage in that only the inner dimension of the shoe can be measured.

The present invention has been proposed in recognition of this point, to provide a shoe measuring apparatus using a new type of laser sensor that can measure the dimensions of the outside and the inside of the shoe comprehensively.

1 is a block diagram for explaining a shoe measuring apparatus using a laser sensor according to the present invention;

2 is a perspective view of a shoe measuring apparatus using a laser sensor according to a preferred embodiment of the present invention;

3 is a view for explaining a method of measuring the inside of a shoe using a shoe measuring apparatus using a laser sensor according to an embodiment of the present invention;

4 is a view for explaining a method of measuring the outside of the shoe using the shoe measuring apparatus using a laser sensor according to an embodiment of the present invention;

5 is a view for explaining the concept of measuring a shoe using a shoe measuring apparatus using a laser sensor according to an embodiment of the present invention;

6a to 6f are views for explaining the difference between the measured value and the shoe original data according to the rotation angle of the inner laser sensor when measuring the inside of the shoe using the shoe measuring apparatus using the laser sensor according to an embodiment of the present invention Graphs.

* Description of symbols on the main parts of the drawings *

1: shoes 2: entrance

10: Shoe measuring device using a laser sensor

12: base 20: holder

30: inner laser sensor unit 32: inner laser sensor

34: stepping motor 36: encoder

37 contact sensor 38 inner reflector

39, 64: auxiliary plate 40: guide rail

42: motor 44: vertical rail

46: horizontal rail 50: outer laser unit

52 outer laser sensor 60 reflector unit

62: reflector 80: control unit

90: measured value processing unit

The present invention for achieving the above object provides a shoe measuring apparatus using a laser sensor for measuring the dimensions of the shoe using a laser sensor having a laser light emitting element and a light receiving element. Such a shoe measuring apparatus using a laser sensor according to the present invention is a cradle 20, the inner laser sensor unit 30, the outer laser sensor unit 50, the reflector plate unit 60, the control unit 80 and the measured value processing unit ( 90). The cradle 20 has a flat top surface for placing the shoe 1 to be measured. The inner laser sensor unit 30 vertically moves the inner laser sensor 32 positioned above the shoe 1 to measure the inner dimension of the shoe 1 so that the inlet 2 of the shoe 1 is moved. It penetrates into the inside of the shoe 1 through and rotates the inner laser sensor 32. The outer laser sensor unit 50 vertically moves the outer laser sensor 52 located in front of the holder 20 to measure the outer dimension of the shoe 1. The reflector plate 60 is installed on the side of the holder 20 so as to correspond to the outer laser sensor 52 so that the laser light emitted from the outer laser sensor 52 is reflected on the shoe 1, and the shoe The reflecting plate 62 which causes the laser reflected from (1) to be reflected to the outer laser sensor 50 is moved to the front and rear surfaces of the holder 20. The controller 80 controls the inner and outer laser sensor units 30 and 50 and the reflector plate 60 to measure the inner and outer dimensions of the shoe 1. The measured value processor 90 stores, calculates, and displays measured values input from the inner laser sensor 32 and the outer laser sensor 52.

In the shoe measuring apparatus using the laser sensor according to the present invention, the inner laser sensor unit 30, the outer laser sensor unit 50 and the reflector plate unit 60 is a horizontal rail 46 on the vertical rail 44 The inner laser sensor 32, the outer laser sensor 52, and the reflecting plate 62 may be installed by the guide rail 40 to be reciprocated by the motor 42.

In the shoe measuring apparatus using the laser sensor according to the present invention, the outer laser sensor unit 50 is provided with a pair of the outer laser sensor 52, respectively located on both sides of the shoe (1), the reflector plate unit 60 may include a pair of reflecting plates 62 respectively positioned on both sides of the holder 20 so as to correspond to the pair of outer laser sensors 52, respectively.

In the shoe measuring apparatus using the laser sensor according to the present invention, the inner laser sensor unit 30 infiltrates the inner laser sensor 32 to the inner side of the shoe 1 so as to measure the inner dimension of the shoe 1. The inner laser sensor 32 has a rotation angle of 0.18 degrees or less when measuring.

The present invention provides a shoe measuring device for measuring the profile of the inner and outer shoes (Profile) of the shoe according to the height. To this end, the shoe measuring apparatus according to the present invention uses a laser sensor for distance measurement, and by applying a guide rail that is installed with a stepping motor for reciprocating a horizontal rail with a ball screw on a vertical rail as in the present embodiment described below. 3-axis control was achieved and Labview was used as a control and measurement program. And as shown in the experiment of the present embodiment to be described later, the shoe prototype (LAST) was reverse engineered to extract a profile of a certain height, and then compared with the data collected using the shoe measuring apparatus according to a preferred embodiment of the present invention.

1 is a block diagram illustrating a shoe measuring apparatus using a laser sensor according to the present invention.

1, the shoe measuring apparatus 10 using the laser sensor according to the present invention is a cradle 20, the inner laser sensor unit 30, the outer laser sensor unit 50, the reflector plate unit 60, the control unit ( 80) and the measured value processing unit 90. The cradle 20 has a flat top surface for placing the shoe 1 to be measured. The controller 80 controls the inner and outer laser sensor units 30 and 50 and the reflector plate 60 to measure the inner and outer dimensions of the shoe 1. The measured value processor 90 stores, calculates and displays the measured values input from the inner laser sensor and the outer laser sensor.

The inner laser sensor unit 30 moves up and down the inner laser sensor positioned on the upper part of the shoe 1 to measure the inner dimension of the shoe 1, and thus the shoe 1 through the inlet 2 of the shoe 1. It penetrates inside and rotates the inner laser sensor. Here, the configuration for moving the inner laser sensor up and down is generally made of a stepping motor, a vertical rail and a horizontal rail as in the preferred embodiment of the present invention to be described later, and the ball screw is rotated by a stepping motor to reciprocate the horizontal rail on the vertical rail Use guide rails to And the configuration for rotating the inner laser sensor is made by mounting the auxiliary plate on the horizontal rail of the guide rail, the stepping motor and the encoder on the auxiliary plate so that the inner laser sensor is coupled on the rotation axis. At this time, the measurement of the size of the inner laser sensor unit 30 is such that the laser is reflected by the reflector 38 (see Fig. 1) located in the lower portion of the laser sensor in the same manner as the conventional shoe size measuring apparatus.

The outer laser sensor unit 50 vertically moves the outer laser sensor located in front of the holder 20 to measure the outer dimension of the shoe 1. The reflection plate unit 60 is installed on the side of the holder 20 so as to correspond to the outer laser sensor so that the laser light emitted from the outer laser sensor is reflected on the shoe 1, and the laser reflected from the shoe 1 is the outer laser. The reflection plate to be reflected by the sensor is moved to the front and rear surfaces of the cradle 20. The outer laser sensor unit 50 and the reflector plate unit 60 as described above can measure the outer dimension of the shoe as a characteristic technical configuration of the present invention. Reflector unit 60 is to measure the outside dimension of the shoe while reciprocating the reflector in the longitudinal direction of the shoe (1) to be placed on the holder 20.

Such a shoe measuring apparatus using a laser sensor according to the present invention can measure the inner and outer dimensions of the shoe using a laser, it is possible to easily and accurately measure the outer and inner dimensions of the shoe during the production process. In particular, since the measured values of the measured inner and outer dimensions of the shoe are processed by a computer and can be easily contrasted with data such as the shoe original, the quality of the shoe can be maintained uniformly in the production process.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, FIGS. 2 to 6F, and like reference numerals denote like elements for performing the same function in FIGS. 1 to 6F. On the other hand, in the drawings, the illustration of the configuration and operation that can be commonly known to those skilled in the art from a general measuring device in a simplified or omitted, and shown around the parts related to the present invention. In particular, there are parts where the size ratio between the elements is somewhat different or the sizes between the components coupled to each other are different, but the difference in representation of the drawings is easily understood by those skilled in the art. A separate description is omitted. In addition, the shoe measuring apparatus according to the present invention mainly applied a laser sensor, a stepping motor, a guide rail used in a general measuring device. Therefore, in the detailed description of the present embodiment, technical configurations and operational effects related to general measuring devices and controls are omitted as possible.

2 is a perspective view of a shoe measuring apparatus using a laser sensor according to a preferred embodiment of the present invention, Figure 3 is a method for measuring the inside of the shoe using a shoe measuring apparatus using a laser sensor according to a preferred embodiment of the present invention 4 is a view for explaining a method of measuring the outside of a shoe using a shoe measuring apparatus using a laser sensor according to a preferred embodiment of the present invention, Figure 5 is a preferred embodiment of the present invention A diagram for describing a concept of measuring a shoe using a shoe measuring apparatus using a laser sensor according to an example.

2 to 5, the shoe measuring apparatus 10 using a laser sensor according to a preferred embodiment of the present invention is the inner and outer laser sensors (32, 52) for measuring the dimensions of each shoe part using a laser light source Wow; A reflecting plate 62 for reflecting the laser of the outer laser sensor 52; It consists of a stepping motor 42, a ball screw (not shown), a vertical rail 44 and a horizontal rail 46 to move the inner and outer laser sensors 32 and 52, respectively, and to move the reflecting plate 62 back and forth. A guide rail 40 (generally referred to as an LM guide); The inner laser sensor 32 is coupled to the auxiliary plate 39 coupled to the horizontal rail 46 of the guide rail 40 for swinging the inner laser sensor 32, and the inner laser sensor 32 is coupled to the end of the rotating shaft. A stepping motor 34 and an encoder 36 for rotating 32; A contact sensor 37 for detecting the bottom surface of the shoe 1 when the inner laser sensor 32 is immersed into the inside of the shoe 1 to measure the inner dimension of the shoe 1; A reflector 38 installed below the contact sensor 37 to reflect the laser of the inner laser sensor 32; Although not shown, a control unit 80 (see FIG. 1) for controlling each element for measuring the shoe 1; And a measurement value processing unit 90 (see FIG. 1) for acquiring and processing the measured values detected from the internal and external laser sensors 32 and 52 and displaying them in the form of various data.

Shoe measuring apparatus 10 using a laser sensor according to a preferred embodiment of the present invention is installed on the base 12 to ensure that each element maintains precision. The base 12 may use a flat plate made of stone, casting material, etc. used in a general measuring device, and measures the inside and outside dimensions of the shoe during the manufacturing process by applying a flat plate installed on the die during the manufacturing process. You can do that.

In this embodiment, the laser sensor (32, 52) of the photo sensitive detector (PSD) method is used as a method for obtaining the inside and outside of the shoe profile. Such laser sensors 32 and 52 include an M1400 laser sensor manufactured by MEL of Germany. As shown in FIGS. 3 and 4, the laser sensors 32 and 52 such that light sent from the light emitting units 320 and 520 by using a laser returns from the measuring point of the shoe 1 and receives the light receiving units 322 and 522. This is a scanning method that finds the distance by reading the location of the PSD in the. Since the PSD type laser sensor is less susceptible to electrical noise, the noise resistance is good.

In this embodiment, the guide rail 40 for moving the inner and outer laser sensors 32 and 52, respectively, and moving the reflecting plate 62 back and forth to reciprocate the horizontal rail 46 on the vertical rail 44. Apply the configured LM guide. The guide rail 40 is configured to rotate the ball screw (not shown) with a stepping motor 42 installed below the vertical rail 44 to transfer the horizontal rail 46. When the shoe 1 is placed on the holder 20 by the guide rail 40, the inner laser sensor 32 moves the inner laser sensor 32 to an optimized position for measuring the shoe inner side, and then the inner side. The inner dimensions of the shoe are measured while rotating the laser sensor 32. In addition, the outside of the shoe is to be measured according to the type of the shoe is different, so in order to take this into consideration, the outer laser sensor 52 is also moved up and down by the guide rail 40 to measure the outside of the shoe (1) Get the measurement of the desired part of the height. And the reflection plate 62 is a total reflection mirror is used to measure the outer dimensions of the shoe (1). The reflective plate 62 is installed on the auxiliary plate 64 coupled to the horizontal rail 44 of the guide rail 40 so as to correspond to the outer laser sensor 52. In order to measure the outside of the shoe 1 on the cradle 20, it is necessary to move the outer laser sensor 52 for measuring it. However, when measuring the dimensions of the shoe outside while moving the outer laser sensor 52, the moving structure becomes complicated, and the processing of the measured value due to the setting of the reference position becomes difficult, the shoe using the laser sensor according to the present embodiment The measuring device 10 processes the external laser sensor 52 by receiving the value according to the movement of the reflecting plate 62, which is a total reflection mirror, so that the shoe 1 and the external laser sensor 52 do not move and the outside dimension of the shoe is measured. Can be measured.

In this embodiment, the inner laser sensor 32 is rotated 360 ° by being coupled to the rotating shaft of the stepping motor 34 and the encoder 36 installed on the auxiliary plate 39 coupled to the horizontal rail 46 of the guide rail 40. While measuring the inner dimensions of the shoe. In order to measure the inner side of the shoe 10, the inner laser sensor 32 measuring the distance needs to rotate to receive a distance value and an angle value therein to indicate the shape of the shoe. Therefore, in the present embodiment, the stepping motor 34 and the encoder 36 rotate the inner laser sensor 32 to store the signal value of the angle, and the inner laser sensor 32 measures the distance value and stores the angle value. Use the distance to graph the inside of the shoe. In this case, a reflector 38 reflecting light is installed at a lower portion of the inner laser sensor 32, and a contact sensor 37 for detecting a position of the bottom of the shoe is installed at the side of the inner laser sensor 32.

In the present embodiment, the outer laser sensor 52 may measure at a desired height of the shoe shape by the guide rail 40, and may be located at the bottom of the cradle 20 to move in the longitudinal direction of the shoe 1. Through 62, the point coordinates of the outer side of the shoe are taken and graphed.

The shoe measuring apparatus 10 using the laser sensor according to the present invention having the inner and outer laser sensors 32 and 52 is a stepping motor for rotating the inner and outer laser sensors 32 and 52 and the inner laser sensor 32. Numerical information obtained at 34 is converted into a digital signal and transmitted to a computer (measuring box processing unit 90), and data is converted using a program such as Labview.

Meanwhile, as shown in FIGS. 3 to 5, the shoe measuring apparatus 10 using the laser sensor according to the present invention obtains data by hitting the edge of the shoe by n equal to 360 °. In addition, the inner and outer laser sensors 32 and 52 allow the red light beam having a wavelength of 675 nm in the light emitting units 320 and 520 to be scanned on the measurement surface with a diameter of 2 mm to measure the reflected angle at the light receiving units 322 and 522. To convert to distance.

The method for measuring the inner dimension of the shoe using the shoe measuring device 10 using the laser sensor having such a configuration is that the horizontal rail 46 is vertical by the operation of the stepping motor 42 of the guide rail 40. It descends on the rail 44 to lower the inner laser sensor 32 into the shoe 1 through the inlet 2 of the shoe 1. At this time, when the inner laser sensor 32 is positioned at an appropriate position, the transfer of the inner laser sensor 32 is stopped by the detection of the contact sensor 37. Afterwards, the stepping motor 34 and the encoder 36, to which the inner laser sensor 32 is fixed, operate to rotate the inner laser sensor 32 and measure the distance value according to each position to move the angle value and the inner laser sensor 32. The length value which converted the voltage value received by the length into length is stored in the computer which is the measured value processing part 90, and displays the displayed angle value and the length value by graphing.

The method of measuring the outer dimension of the shoe using the shoe measuring apparatus 10 using the laser sensor having such a configuration is made almost similar to the method of measuring the inner dimension described above. That is, by first operating the stepping motor 42 of the guide rail 40, the horizontal rail 46 is moved on the vertical rail 44 so that the outer laser sensor 52 is positioned at the height to be measured outside the shoe. In such a state, the reflector 62 is positioned at the end of the shoe, and then the length value obtained by changing the voltage value received from the outer laser sensor 52 to the length while moving the reflector 62 is in the computer of the measured value processor 90. It is stored, and the stored length value is graphed and displayed.

6a to 6f are views for explaining the difference between the measured value and the shoe original data according to the rotation angle of the inner laser sensor when measuring the inside of the shoe using the shoe measuring apparatus using the laser sensor according to an embodiment of the present invention Graphs.

6A to 6F, the present inventors have experimented with verifying the measurement accuracy of a shoe measuring apparatus using a laser sensor according to a preferred embodiment of the present invention as described above. The experiment was performed to compare the measured values measured by the shoe measuring apparatus according to. At this time, the curved surface model of the shoe original was obtained by using Cimcore's Scanworks equipment. Point data processing operations (filtering, smoothing, redundancy, etc.) were performed on data having the form of point data in three-dimensional space to generate ready data for surface generation. A curved surface was generated based on the processed shape data, and the profile was extracted by merging.

Point data at a constant height inside the shoe is represented by a length value and an angle value by the inner laser sensor 32, the stepping motor 34 and the encoder 36. Since the original shape of the shoe and the shoe are different according to the type of shoe, the value of the z-axis to start the measurement is arbitrarily designated. In this experiment, the reference point was 0.5mm from the toe. Due to the nature of the shoe, the beginning of the measurement must be started at the entrance (neck). Accordingly, the measurement of the inner side of the shoe with a large change in curvature of the shoe was measured by densely rotating the angle, and the rear part of the shoe with no large curvature change was shortened by increasing the angle of rotation. In this experiment, the range within 210mm from the reference point was 1.8 °, and the values were measured differently at 1.8 °, 1.44 °, 0.9 °, 0.72 °, 0.36 °, and 0.18 ° at the other parts. The measured length and angle values were converted into x and y coordinate values and compared with the profile of the shoe original. 6A is a result when the rotation angle is 1.8 °, FIG. 6B is 1.44 °, FIG. 6C is 0.9 °, FIG. 6D is 0.72 °, FIG. 6E is 0.36 °, and FIG. 6F is The graph shows the result at 0.18 °.

As a result of measuring the inside dimension of the shoe using the shoe measuring device using the laser sensor according to the present invention, it is understood that the measured data is closer to the profile of the shoe original as the rotation angle of the inner laser sensor 32 decreases. Could. In this case, the distribution of the measurement data is not constant is caused by error factors such as shadow phenomenon of the inner laser sensor 32 generated at the time of measurement and diffuse reflection of the measurement unit and external deformation due to the elasticity of the shoe itself. Therefore, the shoe measuring apparatus using the laser sensor according to the present invention can be seen that the best measurement value can be obtained by measuring the rotation angle of the inner laser sensor 32 or less when measuring the inner dimension of the shoe.

As described above, the shoe measuring apparatus using a laser sensor according to a preferred embodiment of the present invention is shown in accordance with the above description and drawings, but this is only described, for example, within the scope not departing from the technical spirit of the present invention It will be appreciated by those skilled in the art that various changes and modifications are possible.

According to the shoe measuring apparatus using the laser sensor according to the present invention, since the inner and outer dimensions of the shoe can be measured using a laser, the outer and inner dimensions of the shoe can be measured easily and accurately during the production process. In particular, since the measured values of the measured inner and outer dimensions of the shoe are processed by a computer and can be easily contrasted with data such as the shoe original, the quality of the shoe can be maintained uniformly in the production process.

Claims (4)

In the shoe measuring apparatus using a laser sensor for measuring the size of the shoe using a laser sensor having a laser light emitting element and a light receiving element, A cradle 20 having a flat top surface to place the shoes 1 to be measured; In order to measure the inner dimension of the shoe (1) by moving the inner laser sensor 32 located above the shoe (1) up and down through the inlet (2) of the shoe (1) of the shoe (1) An inner laser sensor unit (30) for infiltrating inward and rotating the inner laser sensor (32); An outer laser sensor unit 50 for vertically moving the outer laser sensor 52 positioned in front of the holder 20 to measure the outer dimension of the shoe 1; Is installed on the side of the cradle 20 to correspond to the outer laser sensor 52 so that the laser light emitted from the outer laser sensor 52 is reflected on the shoe (1), and reflected from the shoe (1) A reflecting plate unit (60) for moving the reflecting plate (62) for reflecting the laser to the outer laser sensor (50) to the front and rear surfaces of the holder (20); A controller (80) for controlling the inner and outer laser sensor units (30, 50) and the reflecting plate unit (60) to measure the inner and outer dimensions of the shoe (1); Footwear measuring apparatus using a laser sensor, characterized in that it comprises a measurement value processing unit for storing, calculating and displaying the measured value input from the inner laser sensor 32 and the outer laser sensor (52). The method of claim 1, The outer laser sensor unit 50 has a pair of outer laser sensors 52 respectively positioned on both sides of the shoe 1, and the reflector plate unit 60 is provided with the pair of outer laser sensors 52. Shoe measuring apparatus using a laser sensor, characterized in that it comprises a pair of the reflecting plate 62 which are located on both sides of the cradle 20 so as to correspond respectively. The method according to claim 1 or 2, When the inner laser sensor unit 30 squeezes the inner laser sensor 32 into the shoe 1 and measures the dimension of the shoe 1 inside, the rotation angle of the inner laser sensor 32 is Footwear measuring device using a laser sensor, characterized in that less than 0.18 °. The method according to claim 1 or 2, The inner laser sensor unit 30, the outer laser sensor unit 50, and the reflector plate 60 are guide rails 40 which allow the horizontal rail 46 to be reciprocated by the motor 42 on the vertical rail 44. Foot shoe measuring apparatus using a laser sensor, characterized in that the inner laser sensor 32, the outer laser sensor 52 and the reflecting plate 62 is installed to be transferred by the).