Abstract:
A three-dimensional measurement (C) system for a marked line for adhering a sole (A) to an upper (B) and a three-dimensional measurement method therefor. A three-dimensional structure of a sole inner surface (A 1 ) is measured automatically using a three-dimensional scanner ( 30 ), so as to form three-dimensional inner surface data ( 201 ) of the sole (A); and by conducting operation processing on the three-dimensional inner surface data ( 201 ) of the sole (A) and three-dimensional surface data ( 202 ) of the upper (B), a contour line (A 2 ) of the sole inner surface (A 1 ) is transferred to an upper lower surface (B 1 ), so as to form a processing marked line of the upper (B), thereby improving the operation efficiency of adhering the sole (A) to the upper (B).

Description:
BACKGROUND OF THE INVENTION 
       [0001]    Field of the Invention 
         [0002]    The present invention relates to adhering operation for adhering a sole to an upper of a shoe, and more particularly to a three-dimensional measurement system for a marked line for adhering a sole to an upper and a three-dimensional measurement method therefore. 
         [0003]    Related Prior Art 
         [0004]    Sneaker essentially includes an upper to cover the sole of the foot, and a sole connected to the upper. The sole of a sneaker has a complicated shape, so that the contour line of the sole inner surface which is to be adhered to the lasted upper is also complicated, which makes it difficult to apply glue or treatment agent to the contour line of the sole inner surface, and resulting in poor bonding when the sole is adhered to the upper. 
         [0005]    To solve the abovementioned problem, someone proposed that the upper lower surface and the sole inner surface must be subjected to a roughening treatment before adhering the sole to the lasted upper, then glue is applied to the upper lower surface and the sole inner surface, so that the bonding effect is enhanced by roughening the upper lower surface and the sole inner surface. When the roughening treatment or the application of glue is not performed well, the upper and the sole are very likely to separate from each other and form a rip. Besides, after the roughening treatment or application of glue, the roughened surface is likely to appear at the periphery of the upper lower surface, or glue might overflow to visible area, causing reduction in quality of the sneaker. 
         [0006]    Therefore, currently, the adhering operation of the upper and the sole can only be carried out by manual. A shoemaker uses a sole of the required shape and size as a template and draws by hand a working line by drawing along the periphery of the upper lower surface. Then, the shoemaker uses a grinding wheel to roughen the area of the upper within the working line. Finally, another shoemaker apply glue or treatment agent to the roughened area. 
         [0007]    The manual adhering operation has the disadvantage of low efficiency, and the adhering quality depends a lot on the skill of the shoemaker. When the shoemaker is tired, mistakes are inevitable, and quality cannot be assured. Besides, the sole template itself has a manufacturing tolerance of several millimeters, therefore, using a single sole template to drawing the working line cannot ensure that the position of the working line on every upper is correct. 
         [0008]    Currently, visual imaging system has been used to detect the glue line between the sole and the lasted upper by putting the sole onto the upper, and rotating the video camera along the border of the upper and the sole. However, this cannot be done fully automatically and still requires a lot of manual work to be done by the shoemakers. 
         [0009]    The present invention has arisen to mitigate and/or obviate the afore-described disadvantages. 
       SUMMARY 
       [0010]    The present invention is aimed at providing a three-dimensional measurement system for a marked line for adhering a sole to an upper and a three-dimensional measurement method therefore, which are used to measure the sole and the upper which are carried in pair by the conveyor of a shoe production line, so as to obtain a digital data of the processing marked line for adhering the sole to the upper, and thus achieving the purposes of automatic production, improving production efficiency and quality. 
         [0011]    To achieve the above objective, a three-dimensional measurement system for a marked line for adhering a sole to an upper, in accordance with the present invention is used to measure the sole and the upper which are carried in pair by a conveyor of a shoe production line, and the three-dimensional measurement system includes: a database stored with three-dimensional surface data of the upper; a three-dimensional scanner is mounted on the conveyor via a slideway to scan the sole, a projector and a video camera are slidably mounted on the slideway via a rack, projection lines of light rays generated from the projector are located within a coverage area of the video camera, the projection lines of the three-dimensional scanner are projected onto different parts of the sole inner surface of the sole to create a set of deformation during movement of the sole, measuring displacement distance between the rack and the slideway can create a projection-line displacement data; an identification device is used to identify a built-in identification data in a tag of the upper carried by the conveyor; and a processor is connected to the database, the three-dimensional scanner and the identification device, and serves to read the three-dimensional surface data of the database and the built-in identification data to obtain a three-dimensional surface data of the upper which is conformed to the upper, the processor reads the set of deformation and the projection-line displacement data of the three-dimensional scanner to create a three-dimensional inner surface data of the sole, the processor conducts calculation based on the three-dimensional inner surface data of the sole and the three-dimensional surface data of the upper, and transfers the contour line of the sole inner surface of the sole to the upper lower surface of the upper to form a processing marked line. 
         [0012]    A three-dimensional measurement method used in combination with the above-mentioned three-dimensional measurement system to measure the sole and the upper which are carried in pair by the conveyor of the shoe production line, and mark the processing marked line for adhering the sole to the upper, characterized in that the three-dimensional measurement method comprises: a step S 1  of obtaining the three-dimensional surface data of the sole includes: moving the sole carried by the conveyor into a coverage area of the video camera of the three-dimensional scanner, shooting and measuring with the three-dimensional scanner the set of deformation formed by the projection lines and the projection-line displacement data which are then outputted to and processed by the processor, so as to obtain the three-dimensional inner surface data of the sole inner surface of the sole; a step S 2  of obtaining a three-dimensional surface data of an upper includes: moving the upper carried on the conveyor to an identification area of the identification device, the processor uses the identification device to read the built-in identification data in a tag of the upper and read the three-dimensional surface data of the upper from the database via the identification data, thus obtaining the three-dimensional surface data of the upper which is conformed to the upper; a step S 3  of modifying the sole inner surface includes: processing, by the processor, the three-dimensional inner surface data of the sole and the three-dimensional surface data of the upper, digitally controlling the sole inner surface of the sole to create a three-dimensional surface which is conformed to the upper lower surface of the upper on the sole inner surface of the sole; and a step S 4  of marking a line on the upper includes: processing, by the processor, the three-dimensional inner surface data of the sole and the three-dimensional surface data of the upper, and transferring the contour line of the sole inner surface of the sole to the upper lower surface of the upper to form the processing marked line. 
         [0013]    Preferably, the tag is a radio frequency identification tag or a barcode label which allows the reader of the identification device to read the built-in identification data via Radio frequency identification technology or barcode recognition technology. 
         [0014]    Preferably, the three-dimensional surface data of the upper can also be obtained by three-dimensional scanning The measurement system of the present invention is used to measure the sole and upper which are carried in pair by a conveyor of a shoe production line. When the sole and the upper which are carried in pair are arranged in a parallel manner on the conveyor, the three-dimensional measurement system of the present invention can be provided with another scanner to scan the three-dimensional surface data of the upper in addition to the three-dimensional scanner for scanning the sole inner surface. When the three-dimensional scanner are arranged linearly in a front and back manner on the conveyor, the three-dimensional scanner can scan and send the three-dimensional inner surface data of the sole and the three-dimensional surface data of the upper B to the processor. 
         [0015]    These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be had to the accompanying drawings and descriptive matter in which there are illustrated preferred embodiments of the invention. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0016]      FIG. 1  is an assembly view of the present invention showing that the sole is adhered to the sole of a shoe; 
           [0017]      FIG. 2  shows the three dimensional inner surface of the sole in accordance with a preferred embodiment of the present invention; 
           [0018]      FIG. 3  shows the three dimensional surface of the upper in accordance with a preferred embodiment of the present invention; 
           [0019]      FIG. 4  is an operational view of the present invention showing that the three dimensional scanner is scanning the sole inner surface; 
           [0020]      FIG. 5  is an illustrative view showing the three dimensional measurement system in accordance with the preferred embodiment of the present invention; 
           [0021]      FIG. 6  is a flow chart showing the three-dimensional measurement method therefore in accordance with the preferred embodiment of the present invention; and 
           [0022]      FIG. 7  is a flow chart showing the steps of calculating the contour line in accordance with the preferred embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION 
       [0023]    The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention. 
         [0024]    Referring to  FIGS. 1-6 , a three-dimensional measurement system for a marked line for adhering a sole to an upper and a three-dimensional measurement method therefore in accordance with the preferred embodiment of the present invention are shown. 
         [0025]    The three-dimensional measurement system C in accordance with the present invention is used to measure the sole A and the upper B which are moved in pair by a conveyor D of a shoe production line. The “sole A and upper B in pair” here means that the sole A and the upper B can constitute a complete shoe.  FIG. 1  shows that a shoe is formed when the sole A is adhered to the upper B.  FIG. 2  shows that the sole A is concave structured and therefore has a three-dimensional sole inner surface A 1 , and a contour line A 2  defining the area of the three-dimensional sole inner surface A 1 .  FIG. 3  shows that the upper B is convex structured and therefore has a three-dimensional upper lower surface B 1 , and a processing marked line B 2  defining an adhering area to which the sole inner surface A 1  of the sole A is to be adhered. 
         [0026]    Referring to  FIGS. 4 and 5 , the three-dimensional measurement system C includes: a database  10 , a processor  20 , a three-dimensional scanner  30  and an identification device  40 , and is used to measure the three-dimensional surface data of the sole inner surface A 1 , so that the location of the processing marked line B 2  of the upper B can be obtained by processing the three-dimensional surface data of the sole inner surface A 1  and the three-dimensional surface data of the upper B. 
         [0027]    The database  10  is stored with three-dimensional surface data  101  of various to-be-adhered uppers B. In this embodiment, the upper B is made based on a CNC (computer numerical control) shoe last, therefore, the upper B is conformed to the shape of the shoe last. The three-dimensional surface data of the last corresponding to specific uppers B can be stored in the database  10  and used as the three-dimensional surface data  101  of the uppers B. The method for obtaining the three-dimensional surface data  101  of the uppers B is not limited thereto and can also be obtained by digitizing the scanned images. 
         [0028]    The three-dimensional scanner  30  is mounted on the conveyor D via a slideway  31  to scan the sole A. A projector  33  and a video camera  34  are slidably mounted on the slideway  31  via a rack  32 . The projection lines L of the light rays  331  generated from the projector  33  are located within the coverage area Z of the video camera  34 . The projection lines L of the three-dimensional scanner  30  are projected onto different parts of the sole inner surface A 1  of the sole A to create a set of deformation  301  along with the movement of the sole A. Measuring the displacement distance between the rack  32  and the slideway  31  can create a projection-line displacement data  302 . In this embodiment, the measurement is performed by the three-dimensional scanner  30  based on triangulation principle, and the projector  33  is a laser projector for projecting laser rays. 
         [0029]    The identification device  40  is used to identify a built-in identification data  401  in a tag of the various uppers B which are carried by the conveyor D. In this embodiment, each of the uppers B on the conveyor D is provided with a RFID tag  42 . The identification device  40  is equipped with a reader  41  to read and send the built-in identification data  401  of the RFID tag  42  to the processor  20 . Or, each of the uppers B can be provided with a barcode label  43  in which is stored the built-in identification data  401 , so as to enable the reader  41  of the identification device  40  to identify the uppers B. 
         [0030]    The processor  20  is connected to the database  10 , the three-dimensional scanner  30  and the identification device  40 , and serves to read the three-dimensional surface data  101  of the database  10  and the built-in identification data  401  to obtain a three-dimensional surface data  202  of the upper which is conformed to the upper B. Then the processor  20  reads the set of deformation  301  and the projection-line displacement data  302  of the three-dimensional scanner  30  to create a three-dimensional inner surface data  201  of the sole. The processor  20  conducts calculation based on the three-dimensional inner surface data  201  of the sole and the three-dimensional surface data  202  of the upper, and transfers the contour line A 2  of the sole inner surface A 1  of the sole A to the upper lower surface B 1  of the upper B to form a processing marked line B 2 . 
         [0031]    What mentioned above are the structural relations of the embodiment of the present invention, for a better understanding of the operation and function of the three-dimensional measurement system C for a marked line for adhering the upper to the sole in accordance with the present invention, reference should be made to  FIGS. 1 and 4-6  in conjunction with the following description. 
         [0032]    Referring to  FIGS. 5 and 6 , the three-dimensional measurement method in accordance with the present invention is used to measure the sole A and the upper B which are carried in pair by the conveyor D of a shoe production line, so as to obtain a digital data of the processing marked line B 2  for adhering the sole to the upper, and thus achieving the purposes of automatic production, improving production efficiency and quality. The three-dimensional measurement method in accordance with the present invention comprises the steps of: a step S 1  of obtaining a three-dimensional surface data of a sole, a step S 2  of obtaining a three-dimensional surface data of an upper, a step S 3  of modifying the sole inner surface, and a step S 4  of marking line on the upper. 
         [0033]    The step S 1  of obtaining a three-dimensional surface data of a sole includes: moving the sole A carried by the conveyor D into the coverage area Z of the video camera  34  of the three-dimensional scanner  30 , shooting and measuring with the three-dimensional scanner  30  the set of deformation  301  formed by the projection lines L moving along with the movement of the sole A and the projection-line displacement data  302  which are then outputted to and processed by the processor  20 , so as to obtain the three-dimensional inner surface data  201  of the sole inner surface A 1  of the sole A. 
         [0034]    The step S 2  of obtaining a three-dimensional surface data of an upper includes: moving the upper B carried on the conveyor D to the identification area of the identification device  40 , the processor  20  uses the identification device  40  to read a built-in identification data  401  in a tag of the upper B and read the three-dimensional surface data  101  of the upper from the database  10  via the identification data  40 , thus obtaining a three-dimensional surface data  202  of the upper which is conformed to the upper B. 
         [0035]    The step S 3  of modifying the sole inner surface includes: processing, by the processor  20 , the three-dimensional inner surface data  201  of the sole and the three-dimensional surface data  202  of the upper, digitally controlling the sole inner surface A 1  of the sole A to create a three-dimensional surface which is conformed to the upper lower surface B 1  of the upper B on the sole inner surface A 1  of the sole A. In this embodiment, the step S 3  further includes: a step S 3  of obtaining cross sectional data and a step S 32  of modifying. 
         [0036]    The step S 31  of obtaining cross sectional data includes: processing, by the processor  20 , the three-dimensional inner surface data  201  of the sole and the three-dimensional surface data  202  of the upper, obtaining curve data of plural cross sections formed when the sole inner surface A 1  of the sole A is superimposed on the upper lower surface B 1  of the upper B. The step S 32  of modifying includes: outputting, by the processor  20 , the curve data of plural cross sections to a digital control machine  50 , and modifying, by the digital control machine  50 , the three-dimensional surface which is formed by the sole inner surface A 1  of the sole A is superimposed on the upper lower surface B 1  of the upper B, based on the curve data of plural cross sections. 
         [0037]    The step S 4  of marking a line on the upper includes: processing, by the processor  20 , the three-dimensional inner surface data  201  of the sole and the three-dimensional surface data  202  of the upper, and transferring the contour line A 2  of the sole inner surface A 1  of the sole A to the upper lower surface B 1  of the upper B to form the processing marked line B 2 . In the step S 4  of this embodiment, the processor  20  obtains the contour line data of the sole inner surface A 1  of the sole A by processing the three-dimensional inner surface data  201  of the sole, then integrates and processes the contour line data of the sole inner surface A 1  of the sole A and the three-dimensional surface data  202  of the upper to obtain the positional data of the marked line of the upper B, and outputs the positional data to the digital control machine  50  to allow the digital control machine  50  to process within the area defined by the processing marked line B 2  of the upper lower surface B 1  of the upper B. 
         [0038]    Referring to  FIG. 7 , steps S 41  to S 46  are carried out to calculate the contour line. Steps S 41 , S 42  include inputting sole inner surface data and the last inner surface data into the processor  20 , the step S 43  includes performing primary positioning based on known coordinates, and then performing detailed positioning based on adhering area. Then the step S 44  is performed to project the inner surface data of the sole onto the upper, meanwhile, material elasticity can be set to simulate the effect when the sole is attached to the upper. Finally, in the step S 45  the contour line after deformation is projected onto the upper data, so as to complete the contour line calculation of the step S 46 , and the calculated contour line is outputted for later roughening and glue application. 
         [0039]    It should be noted that when the sole A and the upper B which are carried in pair are arranged in a parallel manner on the conveyor D, the three-dimensional measurement system C of the present invention can be provided with another scanner to scan the three-dimensional surface data of the upper B in addition to the three-dimensional scanner  30  for scanning the sole inner surface A 1 . When the three-dimensional scanner  30  are arranged linearly in a front and back manner on the conveyor D, the three-dimensional scanner  30  can scan and send the three-dimensional inner surface data of the sole A and the three-dimensional surface data of the upper B to the processor  20 . 
         [0040]    In summary, with the three-dimensional measurement system C and the three-dimensional measurement method thereof in accordance with the present invention, the sole A and the upper B can be moved on the production line during the adhering operation. The three-dimensional scanner  30  is capable of acquiring the precise three-dimensional inner surface data of various soles A, which is then used in combination with the three-dimensional measurement method and the three-dimensional surface data of the upper B, to allow the processor  20  to calculate the processing marked line (for adhering the sole to the upper) which can be used as reference parameters for automatic roughening treatment and glue application of the upper B, thus achieving the purposes of automatic production, improving production efficiency and quality. 
         [0041]    While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.