Abstract:
Disclosed is a net knitting method. The knitting method comprises: leading multiple first thread materials ( 3   a ) and second thread materials ( 3   b ) through first rotating members ( 13   a′,    13   b′,    13   c ′) and second rotating members ( 13   a″,    13   b″,    13   c ″) respectively, and cyclically and repeatedly performing the foregoing process through a step of rotating the first rotating members and the second rotating members simultaneously for an odd number of half circles and a step of staggering a first base ( 11 ′) and a second base ( 11 ″), so as to form an obliquely knitted net. The knitting method can improve the structural strength of the net.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a net knitting method and, more particularly, to a net knitting method. 
         [0003]    2. Description of the Related Art 
         [0004]    With reference to  FIGS. 1-3 , a conventional method for knitting woven objects is carried out on a weaving machine disclosed in Taiwan Patent Publication No. 252370 entitled “IMPROVED METAL GABION SPECIAL MACHINE” and Taiwan Patent Publication No. 291714 entitled “IMPROVED GABION WEAVING MACHINE”. The weaving machine mainly includes a weaving unit  1 . The weaving unit  1  includes a base assembly  11 , a plurality of weaving holes  12 , a plurality of rotating assemblies  13 , and a driving member  14 . The base assembly  11  is comprised of a first base  11 ′ and a second base  11 ″. The first base  11 ′ has a first abutment face  111 ′ abutting a second abutment face  111 ″ of the second base  11 ″. Each weaving hole  12  is comprised of a first half hole  12 ′ and a second half hole  12 ″. The first half holes  12 ′ are formed in the first abutment face  111 ′ of the first base  11 ′. The second half holes  12 ″ are formed in the second abutment face  111 ″ of the second base  11 ″. Each first half hole  12 ′ ( 12   a ′,  12   b ′,  12   c ′) is aligned with one of the second half holes  12 ″ ( 12   a ″,  12   b ″,  12   c ″) to form a weaving hole  12 . Each rotating assembly  13  is rotatably received in one of the weaving holes  12  and includes two wire holes  131 . Each rotating assembly  13  is comprised of a first rotating member  13 ′ ( 13   a ′,  13   b ′,  13   c ′) and a second rotating member  13 ″ ( 13   a ″,  13   b ″,  13   c ″). Each first rotating member  13 ′ has a first wire hole  131 ′, and each second rotating member  13 ″ has a second wire hole  131 ″. Wires  3 ,  3   a ,  3   b  thread through the first and second wire holes  131 ′ and  131 ″. The driving member  14  is used to drive the rotating assemblies  13  to rotate. As an example, each rotating assembly  13  has teeth on an outer periphery thereof, and the driving member  14  has a toothed section to drive the rotating assemblies  13  to rotate. 
         [0005]    The weaving machine preferably includes a coiling unit  2  on a side of the weaving unit  1 . The coiling unit  2  is driven by a power unit to coil a net formed after weaving. 
         [0006]    With reference to  FIGS. 2 and 3 , the conventional method for knitting a net includes threading a wire  3  through each wire hole  131 , with an end of the wire  3  extending through the wire hole  131  and then extending toward the coiling unit  2 . The wires  3  are continuously coiled and pulled by the coiling unit  2 . The subsequent steps will be described in connection with the first rotating member  13   a ′,  13   b ′,  13   c ′ and the second rotating member  13   a ″,  13   b ″,  13   c ″ in  FIG. 3 . 
         [0007]    With reference to  FIGS. 3-5 , the driving member  14  is then used to drive the rotating assemblies  13  to rotate a plurality of full-cycle turns, such as two turns or three turns, such that the first rotating member  13   a ′,  13   b ′,  13   c ′ and the second rotating member  13   a ″,  13   b ″,  13   c ″ are still respectively located in the first half hole  12 ′ and the second hole  12 ″ after full-cycle rotation. By continuous coiling and pulling by the coiling unit  2 , a first row of twine portions  3   w  is obtained, as shown in  FIG. 4 . 
         [0008]    With reference to  FIGS. 5-7 , the first base  11 ′ and the second base  11 ″ are then moved relative to the first abutment face  111 ′ and the second abutment face  111 ″, respectively. In an example shown in  FIG. 1 , the first base  11 ′ is moved rightward (first direction) to a position in which each first half hole  12   a ′ moves rightward to a location aligned with the second half hole  12   b ″, with the first half hole  12   a ′ and the second half hole  12   b ″ together forming a weaving hole  12 . The first rotating member  13   a ′ and the second rotating member  13   b ″ are located in the same weaving hole  12 . Thus, an extension  3   x  extends from each of two sides of each twine portion  3   w , as shown in  FIG. 6 . As an example, rightward displacement of the first rotating member  13   a ′ causes the twine portion  3   w  to extend rightward to form the extension  3   x′.    
         [0009]    With reference to  FIGS. 7-9 , next, the driving member  14  again drives the rotating assemblies  13  to rotate a plurality of full-cycle turns to produce a second row of twine portions  3   y.    
         [0010]    With reference to  FIGS. 9-11 , then, the first base  11 ′ and the second base  11 ″ are again moved relative to the first abutment face  111 ′ and the second abutment face  111 ″, respectively. In an example shown in  FIG. 11 , the first base  11 ′ is moved leftward to a position in which each first half hole  12 ′ moves leftward to a location aligned with the originally corresponding second half hole  12 ″, with the first half hole  12 ′ and the second half hole  12 ″ together forming a weaving hole  12 . The first rotating member  13   a ′ and the originally corresponding second rotating member  13   a ″ are located in the same weaving hole  12 . Thus, an extension  3   z  extends from each of two sides of each twine portion  3   y , as shown in  FIG. 10 . As an example, leftward displacement of the first rotating member  13   a ′ causes the twine portion  3   y  to extend leftward to form the extension  3   z′.    
         [0011]    By repeating the steps of rotating the rotating assemblies  13  a plurality of full-cycle turns, displacing the first rotating members  13 ′ and the second rotating members  13 ″ to provide misalignment, rotating the rotating assemblies  13  a plurality of full-cycle turns, and displacing the first rotating members  13 ′ and the second rotating members  13 ″ to their original position, each wire  3  will extend vertically in an S-shaped route, forming a net through weaving. 
         [0012]    However, if one of the wires  3  of the net produced from the conventional method for knitting a net is broken, a large, elongated hole will be generated, as shown in  FIG. 12 . Thus, the objects wrapped by the net are liable to pass through the large hole. As a result, the overall structural strength is poor, and large holes are apt to occur. 
         [0013]    Thus, a need exists for an improved method for knitting a net in view of the above reasons. 
       SUMMARY OF THE INVENTION 
       [0014]    An objective of the present invention is to provide a method for knitting a net to increase the overall structural strength of the net to avoiding occurrence of large holes. 
         [0015]    A method for knitting a net according to the present invention includes a method for knitting a net includes: a wire threading step including threading each of a plurality of first wires through a first rotating member and threading each of a plurality of second wires through a second rotating member; a first misalignment step including controlling a first base and a second base to displace from an initial state to a misaligned state, causing the plurality of first wires and the plurality of second wires to respectively extend in a first direction and a second direction to form extensions; a first rotation step including jointly rotating the first rotating members and the second rotating members an odd number of half turns, causing the plurality of first wires and the plurality of second wires to intertwine with each other to form twine portions; a second misalignment step including displacing the first base and the second base from the misaligned state to the initial state, causing the plurality of first wires and the plurality of second wires to respectively extend in the first direction and the second direction to form extensions; a second rotation step including jointly rotating the first rotating members and the second rotating members an odd number of half turns, causing the plurality of first wires and the plurality of second wires to intertwine with each other to form twine portions; and a repeating step including repeating the first misalignment step through the second rotation step until a net formed by the extensions and the twine portions reaches a predetermined size. 
         [0016]    Weaving is carried out in a sequence of the wire threading step, the first misalignment step, the first rotation step, the second misalignment step, the second rotation step, and the repeating step or in a sequence of the wire threading step, the first rotation step, the first misalignment step, the second rotation step, the second misalignment step, and the repeating step. 
         [0017]    An end of each of the plurality of first wires and an end of each of the plurality of second wires are pulled away from the first base and the second base. 
         [0018]    In that in the second misalignment step, the first base and the second base undergo misalignment displacement in misalignment directions reverse to the first misalignment back to the initial state. 
         [0019]    The rotating direction in the first rotation step is same as the rotating direction in the second rotation step. 
         [0020]    The rotating direction in the first rotation step is opposite to the rotating direction in the second rotation step. 
         [0021]    The advantageous effect of the present invention is that the net formed by the method according to the present invention can avoid large holes. Thus, the present invention provides an effect of increasing the overall structural strength of the net. 
         [0022]    The objectives, features, and advantages of the present invention will become clearer in light of the following detailed description of illustrative embodiments of this invention described in connection with the accompanying drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0023]      FIG. 1  is a view showing a structure of a conventional weaving machine. 
           [0024]      FIG. 2  is a schematic view of the conventional weaving machine after threading of wires. 
           [0025]      FIG. 3  is another schematic view of the conventional weaving machine after threading of wires. 
           [0026]      FIG. 4  is a schematic view illustrating action of a procedure of a conventional method for knitting a net. 
           [0027]      FIG. 5  is another schematic view illustrating action of the procedure of the conventional method for knitting a net. 
           [0028]      FIG. 6  is a schematic view illustrating action of another procedure of the conventional method for knitting a net. 
           [0029]      FIG. 7  is another schematic view illustrating action of another procedure of the conventional method for knitting a net. 
           [0030]      FIG. 8  is a schematic view illustrating action of a further procedure of the conventional method for knitting a net. 
           [0031]      FIG. 9  is another schematic view illustrating action of a further procedure of the conventional method for knitting a net. 
           [0032]      FIG. 10  is a schematic view illustrating action of still another procedure of the conventional method for knitting a net. 
           [0033]      FIG. 11  is another schematic view illustrating action of still another procedure of the conventional method for knitting a net. 
           [0034]      FIG. 12  is a schematic view illustrating a net made by the conventional method for knitting a net, with the net broken. 
           [0035]      FIG. 13  is a flowchart of a method for knitting a net according to the present invention. 
           [0036]      FIG. 14  is a schematic view illustrating action of a first misalignment step of the method for knitting a net according to the present invention. 
           [0037]      FIG. 15  is another schematic view illustrating action of the first misalignment step of the method for knitting a net according to the present invention. 
           [0038]      FIG. 16  is a schematic view illustrating action of a first rotation step of the method for knitting a net according to the present invention. 
           [0039]      FIG. 17  is another schematic view illustrating action of the first rotation step of the method for knitting a net according to the present invention. 
           [0040]      FIG. 18  is a schematic view illustrating action of a second misalignment step of the method for knitting a net according to the present invention. 
           [0041]      FIG. 19  is another schematic view illustrating action of the second misalignment step of the method for knitting a net according to the present invention. 
           [0042]      FIG. 20  is a schematic view illustrating action of a second rotation step of the method for knitting a net according to the present invention. 
           [0043]      FIG. 21  is another schematic view illustrating action of the second rotation step of the method for knitting a net according to the present invention. 
           [0044]      FIG. 22  is a schematic view illustrating action of repeating the first misalignment step of the method for knitting a net according to the present invention. 
           [0045]      FIG. 23  is another schematic view illustrating action of repeating the first misalignment step of the method for knitting a net according to the present invention. 
           [0046]      FIG. 24  is a schematic view illustrating a net made by the method for knitting a net according to the present invention, with the net broken. 
           [0047]      FIG. 25  is another flowchart of the method for knitting a net according to the present invention. 
       
    
    
       [0048]      
         [0000]    
       
         
               
             
               
               
               
             
               
               
             
               
               
               
             
           
               
                   
               
               
                 Reference numbers of elements: 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                   
                 1 weaving unit 
                 11 base assembly 
               
               
                   
                 11′ first base 
                 11″ second base 
               
               
                   
                 111′ first abutment face 
                 111″ second abutment face 
               
             
          
           
               
                   
                 12 weaving hole 
               
               
                   
                 12′, 12a′, 12b′, 12c′ first half hole 
               
               
                   
                 12″, 12a″, 12b″, 12c″ second half hole 
               
               
                   
                 13 rotating assembly 
               
               
                   
                 13′, 13a′, 13b′, 13c′ first rotating member 
               
               
                   
                 13″, 13a″, 13b″, 13c″ second rotating member 
               
             
          
           
               
                   
                 131&#39; first wire hole 
                 131″ second wire hole 
               
               
                   
                 2 coiling unit 
                 3 wire 
               
               
                   
                 3a first wire 
                 3a′ first wire 
               
               
                   
                 3b second wire 
                 3w twine portion 
               
               
                   
                 3x, 3x′ extension 
                 3y twine portion 
               
               
                   
                 3z, 3z′ extension 
                 31, 31a, 31a′, 31b extension 
               
               
                   
                 32, 32′ twine portion 
                 33, 33a, 33a′, 33b extension 
               
               
                   
                 34, 34′ twine portion 
                 35, 35a, 35a′, 35b extension 
               
               
                   
                   
               
             
          
         
       
     
       DETAILED DESCRIPTION OF THE INVENTION 
       [0049]    A method for knitting a net according to the present invention is used on a weaving machine identical to the weaving machine (see  FIGS. 1-3 ) for carrying out the conventional method for knitting a net. 
         [0050]    With reference to  FIGS. 1-3 , the weaving machine used in the present invention mainly includes a weaving unit  1 . The weaving unit  1  includes a base assembly  11 , a plurality of weaving holes  12 , and a plurality of rotating assemblies  13 . The base assembly  11  is comprised of a first base  11 ′ and a second base  11 ″. The first base  11 ′ has a first abutment face  111 ′ abutting a second abutment face  111 ″ of the second base  11 ″, allowing the first base  11 ′ and the second base  11 ″ to displace relative to each other along the first abutment face  111 ′ and the second abutment face  111 ″. The first base  11 ′ and the second base  11 ″ are driven by a power unit to proceed with the relative displacement. 
         [0051]    Each weaving hole  12  is comprised of a first half hole  12 ′ and a second half hole  12 ″. The first half holes  12 ′ are formed in the first abutment face  111 ′ of the first base  11 ′ at regular intervals. The second half holes  12 ″ are formed in the second abutment face  111 ″ of the second base  11 ″ at regular intervals. Each first half hole  12 ′ ( 12   a ′,  12   b ′,  12   c ′) is aligned with one of the second half hole  12 ″ ( 12   a ″,  12   b ″,  12   c ″) to form a weaving hole  12 . 
         [0052]    Each rotating assembly  13  is rotatably received in one of the weaving holes  12 . As an example, the rotating assemblies  13  are preferably driven by a driving member  14  to rotate. Each rotating assembly  13  includes two wire holes  131 . Each rotating assembly  13  is comprised of a first rotating member  13 ′ ( 13   a ′,  13   b ′,  13   c ′) mounted on the first base  11 ′ and a second rotating member  13 ″ ( 13   a ″,  13   b ″,  13   c ″) mounted on the second base  11 ″ and aligned with the first rotating member  13 ′, with the aligned first rotating member  13 ′ and the second rotating member  13 ″ jointly rotatable. Each first rotating member  13 ′ has a first wire hole  131 ′, and each second rotating member  13 ″ has a second wire hole  131 ″. Wires  3 ,  3   a ,  3   b  thread through the first and second wire holes  131 ′ and  131 ″. As an example, first wires  3   a  thread through the first wire holes  131 ′, and second wires  3   b  thread through the second wire holes  131 ″. 
         [0053]    The weaving machine preferably includes a coiling unit  2  on a side of the weaving unit  1 . The coiling unit  2  is driven by a power unit to coil a net formed after weaving. 
         [0054]    With reference to  FIG. 13 , the method for knitting a net according to the present invention includes a wire threading step S 1 , a first misalignment step S 2 , a first rotation step S 3 , a second misalignment step S 4 , a second rotation step S 5 , and a repeating step S 6 . 
         [0055]    With reference to  FIGS. 1-3 , in the wire threading step S 1  of the present invention using the above weaving machine, a plurality of first wires  3   a  and a plurality of second wires  3   b  respectively thread through the first rotating members  13 ′ and the second rotating members  13 ″. Specifically, an end of each first wire  3   a  extends through the first wire hole  131 ′ of one of the first rotating members  13 ′. An end of each second wire  3   b  extends through the second wire  131 ″ of the one of the second rotating members  13 ″. The first wires  3   a  and the second wires  3   b  are pulled to extend away from the weaving unit  1 . For example, in this embodiment, an end of each wire  3  ( 3   a ,  3   b ) is pulled and stretched by the coiling unit  2 . In an example shown in  FIG. 3 , the relative position between the first base  11 ′ and the second base  11 ″ is defined as an initial state. In this state, the first rotating member  13   a ′,  13   b ′, and  13   c ′ are respectively aligned with the second rotating members  13   a ″,  13   b ″, and  13   c ″. Furthermore, the first rotating members  13   a ′,  13   b ′, and  13   c ′ are respectively located in the first half holes  12   a ′,  12   b ′, and  12   c ′. The second rotating members  13   a ″,  13   b ″, and  13   c ″ are respectively located in the second half holes  12   a ″,  12   b ″, and  12   c ″. To assist in description hereinafter, the first wire  3   a  extending through the first wire hole  131 ′ of the first rotating member  13   a ′ is defined as wire  3   a ′ and is represented by a bold line in  FIG. 14 . 
         [0056]    With reference to  FIGS. 3 ,  14 , and  15 , in the first misalignment step S 2  of the present invention, the first base  11 ′ and the second base  11 ″ are controlled to displace from the initial state to a misaligned state, causing the first wires  3   a  and the second wires  3   b  to respectively extend in a first direction and a second direction to form extensions  31 . Specifically, the first base  11 ′ and the second base  11 ″ respectively move along the first abutment face  111 ′ and the second abutment face  111 ″ to generate a misalignment displacement. As an example, the first base  11 ′ displaces rightward, and the second base  11 ″ displaces leftward, as shown in  FIG. 15 . Thus, the first rotating member  13   a ′ displaces rightward until it aligns with an adjacent second rotating member  13   b ″ to form a rotating assembly  13 . Likewise, the first rotating member  13   b ′ displaces rightward until it aligns with an adjacent second rotating member  13   c ″ to form another rotating assembly  13 . The rests undergo in the same manner. Thus, since the first rotation  13 ′ is misaligned with the second rotating member  13 ″ and since the wires  3  are continuously pulled by the coiling unit  2 , the wires  3  will fork to form an extension  31   a  extending in a rightward direction (a first direction) and an extension  31   b  extending in a leftward direction (a second direction), as shown in  FIG. 16 . As an example, each first wire  3   a ′ displaces rightward together with the corresponding first rotating member  13   a ′ to form a rightwards extending extension  31   a ′. Each second wire  3   b  displaces leftward together with the corresponding second rotating member  13 ″ to form a leftwards extending extension  31 . 
         [0057]    With reference to  FIGS. 15-17 , in the first rotation step S 3  of the present invention, each rotating assembly  13  is rotated an odd number of half turns, causing the first wires  3   a  and the second wires  3   b  to intertwine with each other to form twine portions  32 . Specifically, after the first misalignment step S 2 , the first rotating member  13   a ′ and the second rotating member  13   b ″ are respectively located in the first half hole  12   a ′ and the second half hole  12   b ″, as shown in  FIG. 15 . Then, the first rotation step S 3  is carried out to rotate each rotating assembly  13  an odd number of half turns. As an example, the rotating assembly  13  comprised of the first rotating member  13   a ′ and the second rotating member  13   b ″ rotates 5 half turns (2.5 turns) in the counterclockwise direction. After rotation, the positions of the first rotating member  13   a ′ and the second rotating member  13   b ″ are exchanged such that the first rotating member  13   a ′ and the second rotating member  13   b ″ are respectively located in aligned second half hole  12   b ″ and first half hole  12   a ′. Thus, in the misaligned state, the first rotating member  13 ′ moves from the first half hole  12 ′ in the first base  11 ′ through an odd number of half turns to the second half hole  12 ″ in the second base  11 ″ aligned with the first half hole  12 ′ in the first base  11 ′. By doing so, the extensions  31   a  and  31   b  generate a row of twine portions  32  and  32 ′, as shown in  FIG. 16 . 
         [0058]    With reference to  FIGS. 17-19 , in the second misalignment step S 4  of the present invention, the first base  11 ′ and the second base  11 ″ undergo misalignment displacement in the reverse direction to the initial state, causing the first wires  3   a  and the second wires  3   b  to respectively extend in the first direction and the second direction to form extensions  33   a  and  33   b . Specifically, the initial state is restored by misalignment displacement in the reverse direction (moving first base  11 ′ leftward and moving the second base  11 ″ rightward). Taking  FIG. 19  as an example, the first rotating member  13   a ′ displaces rightward together with the second base  11 ″ such that the first rotating member  13   a ′ and another second rotating member  13   c ″ are respectively located in aligned first half hole  12   b ′ and second half hole  12   b ″. Thus, the twine portions  32  extend rightward and leftward again to form a second layer of twine portions  33 , as shown in  FIG. 18 . For example, the first wire  3   a ′ again extends in the rightward direction (the first direction) after the twine portion  32 ′ to form the extension  33   a ′. The second wire  3   b  again extends in the leftward direction (the second direction) after the twine portion  32  to form the extension  33   b.    
         [0059]    With reference to  FIGS. 19-21 , in the second rotation step S 5  of the present invention, each rotating assembly  13  is rotated an odd number of half turns, causing the first wires  3   a  and the second wires  3   b  to intertwine with each other to form twine portions  34 . Specifically, after the second misalignment step S 4 , the first rotating member  13   a ′ and the second rotating member  13   c ″ are respectively located in the second half hole  12   b ″ and the first half hole  12   b ′, as shown in  FIG. 19 . Next, the second rotation step S 5  is carried out to rotate each rotating assembly  13  an odd number of half turns. As an example, the rotating assembly  13  comprised of the first rotating member  13   a ′ and the second rotating member  13   c ″ rotates 5 half turns (2.5 turns) in the clockwise direction. After rotation, the positions of the first rotating member  13   a ′ and the second rotating member  13   c ″ are exchanged such that the first rotating member  13   a ′ and the second rotating member  13   c ″ are respectively located in aligned first half hole  12   b ′ and second half hole  12   b ″. Thus, in the aligned state, the first rotating member  13 ′ moves from the second half hole  12 ″ in the second base  11 ″ through an odd number of half turns to the first half hole  12 ′ in the first base  11 ′ aligned with the second half hole  12 ″ in the second base  11 ″. By doing so, the extensions  33   a  and  33   b  generate a row of twine portions  34  and  34 ′, as shown in  FIG. 20 . Furthermore, in this embodiment, the rotating direction of the rotating assemblies  13  in the first rotation step S 3  can be the same as or opposite to the rotating direction of the rotating assemblies  13  in the second rotation step S 5 . Preferably, the rotating direction in the first rotation step S 3  is opposite to that in the second rotation step S 5 . A net having enhanced structural strength can be obtained by intertwining the wires  3  through rotations in opposite directions. 
         [0060]    With reference to  FIGS. 21-23 , in the repeating step S 6  of the present invention, the first misalignment step S 2  is repeated until the woven net reaches a predetermined size. Specifically, the first misalignment step S 1  is carried out again (see  FIG. 23 ) to obtain another layer of extensions  35 ,  35   a ,  35   a ′,  35   b , as shown in  FIG. 22 . By repeating the first misalignment step S 2  through the second rotation step S 5 , the first wire  3   a  extending through the first wire holes  131 ′ will gradually extend leftward, obtaining a net by slant cross weaving of wires  3   a  and  3   b , as shown in  FIG. 22 . 
         [0061]    With reference to  FIG. 24 , even a rightwards extending first wire  3   a  in the net formed by the method for knitting a net according to the present invention is broken, the structure of the net is still maintained by several leftwards extending wires  3   b , because the net is formed by cross weaving. Thus, the maximal size of the hole in the net is only two meshes. Large holes will not occur. Thus, the overall structural strength of the net is increased. 
         [0062]    In view of the foregoing, by moving the first base  11 ′ and the second base  11 ″ to the misaligned state, rotating each rotating assembly  13  an odd number of half turns to exchange the positions of the first rotating member  13 ′ and the second rotating member  13 ″ in the same weaving hole  12 , moving the first base  11 ′ and the second base  11 ″ back to the initial state, rotating each rotating assembly  13  an odd number of half turns again, etc., the first rotating member  13 ′ and the second rotating member  13 ″ continuously move rightward and leftward to weave the net having high structural strength. Thus, the present invention can actually increase the structural strength of the net. 
         [0063]    With reference to  FIG. 25 , in the method for knitting a net according to the present invention, after the wire threading step S 1 , the first rotation step S 3  can be carried out and then the first misalignment step S 2 . Next, the second rotation step S 5  is carried out and then the second misalignment step S 4 . The steps are identical to the above steps and, therefore, not redundantly described. After repeating these steps, the above net formed by cross weaving can be obtained. Thus, the method for knitting a net according to the present invention is not limited to firstly carry out the first misalignment step S 2  or the first rotation step S 3 . Only alternate proceeding of the rotation step of rotating an odd number of half turns and the misalignment step is required. 
         [0064]    In the method for knitting a net according to the present invention, each of the first wire and the second wire moves in a predetermined direction and is continuously cross woven with another wire. Thus, even if a wire of the net woven by the present invention is broken, several wires extending in the other direction can still maintain the structure of the net, because the net is formed by cross weaving such that the maximal size of the hole in the net is only two meshes. Large holes will not occur. Thus, the present invention provides an effect of avoiding generation of large holes. 
         [0065]    Furthermore, since the net formed by the method according to the present invention can avoid large holes, the present invention can increase the overall structural strength of the net.