Background Art [2] The machine of the present invention twists alternative adjacent two strands of heavy wire to obtain continuous-hexagonal mesh.

[3] The wire suppliers of the machine for netting hexagonal mesh should rotates and be transferred in order to form twists of continuous hexagonal mesh, as shown in Fig.

5. However, since the heavy weight of the wire suppliers makes their rotation and transfer difficult, the conventional machine has employed the wire supplier in a form of spring as shown in Fig. 4.

[4] Nevertheless, the wire supplier in the form of spring requires an additional spring- forming process and equipment therefor. Further, two sets of twist gear are required for rotating and transferring the wire supplier in the form of spring, and it makes the whole process costly and space-consuning. Moreover, the length limitation of the wire supplied in the form of spring, about 30 m, demands frequent change of spring, to decline the production efficiency.

Description Of Drawings [5] The objects and features of the present invention will become apparent from the following description of the invention, when taken injunction with the accompanying drawings which respectively show: [6] Fig. 1 : the overall view of the machine of the present invention for continuously netting a hexagonal mesh.

[7] Fig. 2 : the structural view of the wire suppliers of the present machine.

[8] Fig. 3 : the structural side view of the wire supplier of the present machine.

[9] Fig. 4: the wire supplier of a conventional machine for netting hexagonal mesh.

[10] Figs. 5 : the netting process of the hexagonal mesh.

[11] Fig. 6 : the view of a wire supplying of the present machine.

[12] Fig. 7 : the twist gear of the present machine.

[13] Fig. 8 : the first and second grooves formed in the chain which is installed at the circumference of the bobbin housing.

[14] Fig. 9: the binding structure of the transfer hook and transfer nozzle pipe of the present machine.

[15] Figs. 10,11 and 12: the operation of the transfer hook of the present machine.

[16] Fig. 13: the rotating mechanism of the transfer nozzle pipe and rotating pin of the present machine.

[17] Fig. 14: the rotating mechanism of the transfer hook.

[18] Fig. 15: the transfer mechanism of the transfer hook.

[19] 101: first bobbin, 102: second bobbin, 103: wire, 104: wire supplier, 105: twist, [20] 201a, 201b : bobbin housing, 201c : top of the rotating rail of the bobbin housing, 202: rotating pin, [21] 203a: first groove, 203b: second groove, 204: transfer nozzle pipe, [22] 301: rotating rail, [23] 401,402 : driving motor, 403: gear housing, 404: supporter, 405: twist gear, 405a : wire penetrating hole, 406: driving crank, [24] 408 : wire in a form of spring, 409: guide roller, 410: driving gear [25] 501 : rack gear A, [26] 502 : transfer hook, 502a: transfer hook of status I, 502b: transfer hook of status II, 502c: transfer hook of status III, [27] 503: hook lever, 503a: hook lever of status I, 503b: hook lever of status II, 503c : hook lever of status III, [28] 504 : transfer hook guide bar, [29] 601 : driving frame [30] 701 : first cam lever, 702: second cam lever, 704: belt wheel, 705: belt, 706 : pinion gear, 707: cam pulley, 708: idle gear, [31] 709, 710 : belt, [32] 801 : chain rotating cam, 802: hook cam, 803: hook transfer cam, [33] 901 : hexagonal mesh Disclosure [34] Accordingly the object of the present invention is to provide a netting machine of hexagonal mesh gabion for simple and continuous netting process to enhance the efficiency of the process.

[35] In accordance with the object of the present invention, there is provided a machine for continuously netting hexagonal mesh, comprising a plural number of the wire suppliers each comprising a first bobbin (101), a second bobbin (102) which is placed in rear of the first bobbin, and a bobbin housing (201) surrounding the first bobbin and equipped with transfer nozzle pipe (204) penetrated by the wire from the second bobbin, rotating rail (301), chain (203) and rotation pin (202) for rotation of the bobbin housing, and transfer hook (502) for transfer of transfer nozzle pipe (204) on the external surface thereof; and a plural number of twist gears (405) each consist of lower and upper hemisphere which is respectively penetrated by the wires from the first and second bobbins.

[36] Hexagonal mesh, as shown in Fig. 5, is made by repeating the process of twisting the wires from the first and second bobbin, and transferring the wire from the second bobbin onto left or right adjacent bobbin housing. The transfer of the wires are performed toward left and right direction, by turns, to obtain a hexagonal mesh in a zigzag form. The wires from the first and second bobbin are twisted by 1 to 5, preferably 2 turns, and in a clockwise and counterclockwise in turns.

[37] The members of the wire suppliers and twist gears of the present machine are arrayed in parallel, respectively, and twist gears are positioned ahead of the wire suppliers where the first bobbins are placed ahead of the second bobbins, as shown in Fig. 1.

[38] As shown in Fig. 6, the twist of the wire from the first and second bobbin is ac- complished by the rotation of the bobbin housing (201) accommodating transfer nozzle pipe (204) penetrated by the wire from the second bobbin on the upper surface (102) to the first bobbin (101). The wire from the second bobbin is supplied through the transfer nozzle pipe (204) which is placed on the external circunference of the bobbin housing (201) and rotates along the rotating rail (301) installed in external cir- conference of the bobbin housing (201). Further, the ends of the wires from the first and second bobbin are penetrated to holes (405a) installed in the lower and upper hemisphere of the twist gear (405), respectively (Fig. 7). The transfer nozzle pipe (204) and the twist gear (405) rotate in a same direction and at a same rate to form a twist of the wires from the first and second bobbin. The wires form the first bobbin and the second bobbin are supplied as shown in Fig. 6.

[39] For forming the mesh in a zigzag form, following the rotation of transfer nozzle pipes and twist gear, the wire from the second bobbin is transferred by a specific distance onto the left or right adjacent bobbin housing and form a twist with the wire from the left or right adjacent first bobbin, as the upper hemisphere of the twist gear is also transferred into same direction and by same distance onto left or right adjacent lower twist gear. In other words, the transfer nozzle pipe penetrated by the wire from the second bobbin is transferred on the rotating rail of the left or right adjacent bobbin housing and the upper hemisphere of the twist gear is simultaneously transferred onto the lower hemisphere of the adjacent left or right twist gear. The transfer nozzle pipe is transferred by a round trip movement of a transfer hook (502) which is formed on the upper part of the bobbin housing, which is driven by a transfer hook cam (803), and the upper hemisphere of the twist gear is transferred by the round trip movement of the gear housing (403) wherein the twist gears are installed, which is driven by a transfer cam. The transfer nozzle pipe and the upper hemisphere of the twist gear coordinately move toward the same direction and by the same distance.

[40] In a concrete term, as shown in Fig. 2, the bobbin housing (201) is established surrounding the first bobbin (101) to rotate at a right angle. The elliptic rotating rails (301) are formed at both lateral sides of the bobbin housing, and chains (203) are installed therein. A plural nunber of a first groove (203a) for binding together with rotating pins (202) and one second groove (203b) for accommodating the transfer nozzle pipe (204) are installed on the lateral sides of the chains, as shown in Figs. 6 and 8. The rotation of the bobbin housing (201) is driven by the rotation of the chains (203) along the rotating rails (301), which is powered by a driving motor. (401) [41] The transfer nozzle pipe (204) attaches onto or detaches from the second groove (203b) when it is transferred by the round trip movement of the transfer hook (502).

The transfer nozzle pipe (204) detaches from the original second groove, is transferred and attaches onto the second groove (203b) of the adjacent bobbin housing (201), and form a twist with the wire from the adjacent first bobbin (201). That is, when the transfer nozzle pipe (204) is placed on the second groove of the adjacent bobbin housing, the adjacent bobbin housing rotates to the first bobbin (101) placed inside to form a twist, the rotating direction of which is opposite to that of prior to the transfer of the transfer nozzle pipe, to make the two wires be twisted in a left-handed and right- handed in turns.

[42] Further, the present machine for netting hexagonal mesh comprises a driving part f or transfer and rotation movement. The rotation of the transfer nozzle pipe (204) is explained below in view of driving mechanism. As indicated in Fig. 13, up and down round trip of a first chain cam lever (701) is delivered to left and right round trip of a second chain cam lever (702) and a rack gear A (501) connected to one side of the second chain cam lever (702) through a chain rotating cam (801) connected to the driving motor (401), and the rotation of a pinion gear (706) engaged with the rack gear A (501) drives the rotation of the idle gear (708) which shares a rotating axis with the pinion gear (706), to cause the rotation of the rotating rail (301) of the bobbin housing.

The transfer nozzle pipe (204) bound to the rotating rail (301) rotates around the first bobbin placed inside of the bobbin housing, to form a twist. As mentioned above, the directions of the successive rotations before and after the transfer of the transfer nozzle pipe are opposite each other, clockwise and counterclockwise or vice versa, to have the two wires be twisted in a right-handed and left-handed, in turns.

[43] Meanwhile, the wire from the first bobbin (101) inside of the bobbin housing (201) and the wire which is penetrating the transfer nozzle pipe (204) and supplied from the second bobbin (102) place in the rear of the first bobbin are put into the holes (405a) formed in the lower and upper hemisphere of the twist gear (405), respectively. A guide roller is set on the surface of a gear housing (403) containing the twist gears (405) and a rack gear B (504) is installed on the guide roller in order for the twist gears (405) to be engaged with the rack gear B (504) at regular intervals. A side of rack gear B (504) is engaged with a driving gear which is connected to the driving motor (402) by chain-linking a chain pulley of the driving gear and the chain pulley of the driving motor. The right and left round trip of the rack gear B (504) driven by driving gear makes the twist gears rotate in a clockwise and counterclockwise and subsequently the two wires be twisted left-handed and right-handed. For example, two wires from the fist bobbin and the second bobbin being respectively put into the two holes formed in a twist gear, the rack gear B (504) moves toward the left direction by a specific distance through the rotation of the driving gear engaged with a side of the rack gear B, and the twist gears (405) interlocked with the rack gear B (504) rotates in a counterclockwise by specific turns. Following a transfer movement, the rack gear B (504) moves toward the right direction by a specific distance and the twist gears rotates in a clockwise by specific turns. The rotation direction of the twist gears is coordinated to be identical to that of the bobbin housing.

[44] The transfer of the transfer nozzle pipe (204) onto the rotating rail (301) of the adjacent bobbin housing is achieved by the movement of the transfer hook (502), and the structure of the transfer hook is shown in Fig. 9. The transfer nozzle pipe (204) engaged with the second groove (203b) of the chain (203) is placed on the top of the bobbin housing (201c) after rotating by specific turns as shown in Fig. 10. Figs. 10 to 12 show status I (502a), status II (502b), and status III (502c) of transfer hook (502), re- spectively. The transfer hook of status I (502a) rotates by 90° in a clockwise to status II (502b) and hooks the transfer nozzle pipe as being ready for transfer to left adjacent bobbin housing. As a hook cam (802) lifts a hook lever (503) to a position of 503b, a belt (705) rotates along a belt wheel (704) in a clockwise and the transfer hook (502) rotates thereby, as shown in Fig. 14. Subsequently, a hook transfer cam (803) pulls a transfer hook guide bar (504) through transfer cam levers (701b, 702b) toward the left side and the transfer hook (502) bound to the transfer hook guide bar (504) slides to the top (201c) of the left adjacent bobbin housing (201b) along the upper surface of the rotating rail (302) as shown in Fig. 15. Then, as the hook cam (802) pulls the hook lever (503) to a position of 503a, the transfer hook (502) rotates by 90° in a counter- clockwise to the status I and the transfer nozzle pipe transferred by the transfer hook (502) is engaged with the second groove (203b) of the left adjacent bobbin housing.

The the wire supplied through the transfer nozzle pipe forms a twist with the wire supplied from the left adjacent first bobbin. As the transfer hook (502) turns to status III by the operation of the hook cam (802) and hook lever (503), and the hook transfer cam (803) pulls the transfer hook guide bar through transfer cam lever (701b, 702b) toward the right direction, the transfer hook (502) slides toward the right direction along the upper surface of the rotating rail (301) and the transfer nozzle pipe returns to the top of the original bobbin housing, to form a twist with the wire from the original first bobbin.

[45] Coordinating with the above transfer movement of the transfer nozzle pipe, the gear housing (403) comprising twist gears (405) at regular interval is transferred by identical distance and toward identical direction to the transfer nozzle pipe by the operation of the transfer cam. The twist gears move to a position for forming a next twist and rotate by the linear movement of the rack gear B (504).

[46] The machine of the present invention can continuously produce hexagonal mesh, wherein the transfer nozzle pipes and twist gears coordinately rotate in terms of direction and rate to form the twists and are coordinately transferred toward the same direction and by the same distance for making the next twist. The rotation and transfer are repeated by turns to obtain a continuous hexagonal mesh. Further, the directions of the successive transfers, as well as the direction of the successive rotations, are opposite to form a hexagonal mesh in a zigzag form.

[47] The present machine also comprises conventional parts for pulling and unloading the hexagonal mesh gabion produced, in continuation with the wire suppliers and twist gears.

[48] The present machine is useful for netting hexagonal mesh with heavy duty wire.

Further the present machine is very helpful for producing continuous hexagonal mesh in a simple process and enhancing the productivity.

[49] While the invention has been described with respect to the above specific em- bodiments, it should be recognized that various modifications and changes may be made to the invention by those skilled in the art which also fall within the scope of the invention as defined by the appended claims.