Rebar binding device for assembling cage for tunnel construction

Abstract

The present invention provides a rebar binding device for assembling a cage for tunnel construction by which wires are bound to crossed rebars, the rebar binding device comprising: a wire conveying unit that moves a wire for binding crossed rebars; a gripping / cutting unit that is connected to the wire conveying unit and can grip and cut the wire; a bending unit that wraps the wire that has passed through the gripping / cutting unit around the crossed rebars, and then supplies the end of the wire to the gripping / cutting unit; and a control unit connected to the wire conveying unit, the gripping / cutting unit, and the bending unit. The control unit wraps the wire, moved by rotating a conveyance motor in the forward direction, around the crossed rebars by means of the bending unit, and then positions the end of the wire in the gripping / cutting unit. Subsequently, when the gripping / cutting unit grips the end of the wire, the control unit rotates the conveyance motor in the reverse direction to move the wire in the other direction and thereby wind the wire tightly around the crossed rebars.

Description

Reinforcing bar tie-down device for assembling cages for tunnel construction

[0001] The present invention relates to a reinforcing bar tying device for assembling a cage for tunnel construction, and more specifically, to a reinforcing bar tying device for tunnel construction that can easily perform tying work for reinforcing bar assembly with a simple structure.

[0002] In concrete structures for tunnel construction, reinforcing bars are used to increase strength, and to prevent the reinforcing bars from being misaligned during concrete pouring, they are tied with wire.

[0003] Conventionally, as illustrated in Fig. 1, a device called a rebar tying device has been known that wraps a wire (W) around two or more reinforcing bars (S) and twists the wire (W) wrapped around the reinforcing bars to tie the two or more reinforcing bars (S) together with the wire (W). This rebar tying device (10) comprises a tying wire feeding mechanism that sends out a wire wound on a reel and winds it around the reinforcing bars, a gripping mechanism that grips the wire wound around the reinforcing bars, and a tying wire twisting mechanism that rotates and drives the gripping mechanism to twist the wire.

[0004] By trigger operation, the wire transport mechanism, the gripping mechanism, and the wire twisting mechanism operate sequentially to perform one cycle of binding operation. This binding device is installed on a robot arm (20) and moves to a position requiring binding by the robot arm (20) to perform the required binding operation.

[0005] In these conventional binders, tasks such as wire gripping, cutting, and twisting are each performed by different components, so not only does the binder become larger, but its internal structure is complex, making it prone to failure.

[0006] In addition, when tying rebars with wire, if the tying is loose, not only will the rebars become misaligned, but the time required to twist the wire will also increase, which is a problem.

[0007] The present invention was created to solve the above-described problems, and the purpose of the present invention is to provide a reinforcing bar tying device for assembling a cage for tunnel construction, which can accomplish a series of operations such as wire gripping, cutting, and twisting with a single device, thereby simplifying the overall structure and saving work time.

[0008] In addition, another object of the present invention is to provide a reinforcing bar tying device for assembling a cage for tunnel construction, which tightly wraps reinforcing bars during the process of tying reinforcing bars with wire to prevent them from misaligning with each other.

[0009] The reinforcing bar binding device for assembling a cage for tunnel construction of the present invention to achieve the above-described technical purpose is as follows:

[0010] A wire transfer unit that moves wires to tie cross bars;

[0011] A gripping and cutting unit connected to the above wire transport unit and capable of gripping and cutting the wire;

[0012] A bending section for winding the wire passing through the above-mentioned breaking and cutting section around the cross-reinforcing bar and then supplying the end of the wire to the breaking and cutting section; and

[0013] It includes a control unit connected to the wire transfer unit, the gripping and cutting unit, and the bending unit,

[0014] The above wire transfer unit includes a transfer motor that rotates in a forward or reverse direction to rotate the first drive gear, and a first driven gear that moves the wire in one direction or the other direction while inserting the wire between the first drive gear,

[0015] The above control unit rotates the feed motor in the forward direction to move the wire so that it wraps around the cross reinforcing bar by the bending unit, and then positions the end of the wire in the gripping and cutting unit, and after the gripping and cutting unit grips the end of the wire, rotates the feed motor in the reverse direction to move the wire in the other direction so that the wire can be tightly wound around the cross reinforcing bar.

[0016] In the above-mentioned reinforcing bar tying device for assembling a cage for tunnel construction, the control unit can cut the wire passing continuously between the gripping and cutting unit and the bending unit by the gripping and cutting unit after the wire is tightly wound around the cross reinforcing bar.

[0017] In the above-mentioned reinforcing bar tying device for assembling a cage for tunnel construction, the control unit can grip the cut portion of the wire and cause the cut portion to grip.

[0018] In the above-mentioned reinforcing bar tying device for assembling a cage for tunnel construction, the gripping and cutting part can be rotated while gripping the end of the wire and the cut part of the wire together to twist and tie the wire around the cross reinforcing bar.

[0019] In the above-mentioned reinforcing bar tying device for assembling a cage for tunnel construction, the gripping and cutting unit may include: a slide member on which a fixing tool is installed; a first tool member rotatably connected to one side of the slide member so as to approach or move away from the fixing tool and capable of gripping an end of a wire by engaging with the fixing tool; and a second tool member rotatably connected to the other side of the slide member so as to approach or move away from the first tool member and capable of cutting the wire in cooperation with the first tool member and gripping the cut wire.

[0020] In the above-mentioned reinforcing bar tying device for assembling a cage for tunnel construction, the first tool member may include a first main body having a flat plate shape, and a first-first gripping portion that protrudes upward from one side of the first main body and can engage with the fixed tool while rotating.

[0021] In the above-mentioned reinforcing bar tying device for assembling the tunnel construction cage, a first-second gripping portion protruding downward from the other side of the first main body is further provided.

[0022] The second tool member may include a second main body having a flat shape and a second gripping portion formed to have a hook shape at an edge of the second main body and capable of engaging with the first and second gripping portions.

[0023] In the above-mentioned reinforcing bar tying device for assembling a cage for tunnel construction, a sharp first cutting blade may be formed on one edge of the first main body, and a second cutting blade for cutting wire in cooperation with the first cutting blade may be formed on a side of the second main body facing the first cutting blade.

[0024] In order to achieve the above-described purpose, the present invention provides a reinforcing bar tying device for assembling a cage for tunnel construction, comprising: a wire transfer unit for moving a wire for tying cross reinforcing bars in one direction or the other;

[0025] A gripping and cutting unit connected to the above wire transport unit and capable of gripping and cutting a wire moving in one direction;

[0026] A bending section that rolls up the wire that has passed through the above-mentioned phage and cutting section into a round shape and supplies the end of the wire to the phage and cutting section; and

[0027] It includes a control unit connected to the wire transfer unit, the gripping and cutting unit, and the bending unit,

[0028] The above control unit,

[0029] After the wire supplied in one direction through the wire conveying section is wrapped around the cross reinforcing bar by the bending section, the end of the wire is positioned in the gripping and cutting section, and after the end of the wire is gripped by the gripping and cutting section, the wire can be moved in one direction and the opposite direction so that the wire is tightly wound around the cross reinforcing bar.

[0030] In the above-mentioned reinforcing bar tying device for assembling a cage for tunnel construction, the wire transfer unit may include a transfer motor that rotates in a forward or reverse direction to rotate the first drive gear, and a first driven gear that moves the wire in one direction or the other direction while inserting the wire between the first drive gear and the first driven gear.

[0031] The reinforcing bar tying device for assembling a cage for tunnel construction according to the present invention has the advantage of a simple structure and the ability to simplify the overall reinforcing bar assembly time since the gripping and cutting parts perform the gripping, cutting, and twisting operations of the wire.

[0032] The reinforcing bar tying device for assembling a cage for tunnel construction according to the present invention has the advantage of tightly wrapping the wire around the cross reinforcing bar through the bending portion, thereby stably supporting the reinforcing bar after tying.

[0033] Figure 1 is a drawing showing an example of a conventional reinforcing bar assembly fastening device for tunnel construction.

[0034] Figure 2 is a perspective view of a reinforcing bar assembly fastening device for tunnel construction according to one embodiment of the present invention.

[0035] Figure 3 is a plan view of Figure 2.

[0036] Figure 4 is a side cross-sectional view of Figure 2.

[0037] Fig. 5 is a perspective view showing the bending portion in Fig. 2.

[0038] Figure 6 is a perspective view of Figure 5 viewed from the rear.

[0039] Fig. 7 is an enlarged side view of the bend in Fig. 5.

[0040] Figures 8 to 12 are operational diagrams showing the wire being wound around a cross-reinforcing bar.

[0041] Figure 13 is a drawing showing the appearance of cross reinforcing bars with wires tied together.

[0042] Drawings showing in detail the phage and cutting portions of the one-piece structure of FIG. 2, FIG. 14 to FIG. 16.

[0043] Fig. 17 is a control block diagram of the rebar tying device of Fig. 2.

[0044] The embodiments of this disclosure are provided for the purpose of illustrating the technical concepts of this disclosure. The scope of rights under this disclosure is not limited to the embodiments presented below or the specific descriptions of these embodiments.

[0045] In this disclosure, "embodiment" is an arbitrary distinction used to facilitate the technical concept of the present disclosure, and each embodiment is not necessarily mutually exclusive. For example, the configurations disclosed in one embodiment may be applied and implemented in other embodiments, and may be modified and applied and implemented without departing from the scope of the present disclosure.

[0046] All technical and scientific terms used in this disclosure, unless otherwise defined, have the meanings commonly understood by those of ordinary skill in the art to which this disclosure pertains. All terms used in this disclosure have been selected for the purpose of more clearly explaining this disclosure and are not intended to limit the scope of rights under this disclosure.

[0047] Expressions such as “including,” “comprising,” “having,” and the like used in this disclosure should be understood as open-ended terms that imply the possibility of including other embodiments, unless otherwise stated in the phrase or sentence in which the expression is included.

[0048] Expressions such as “consisting only of” or the like used in this disclosure should be understood as closed-ended terms that exclude the possibility of including other configurations in addition to the configuration in question.

[0049] The singular forms described in this disclosure may include plural meanings unless otherwise stated, and the same applies to the singular forms described in the claims.

[0050] The expressions “first,” “second,” etc. used in this disclosure are used to distinguish between multiple components, and do not limit the order or importance of the components.

[0051] In the present disclosure, “horizontal direction” means the direction in which a wire passes through a screw member, and “vertical direction” means the direction orthogonal to the horizontal direction.

[0052] Hereinafter, embodiments of the present disclosure will be described with reference to the attached drawings. In the attached drawings, identical or corresponding components are assigned the same reference numerals. Furthermore, in the description of the embodiments below, redundant descriptions of identical or corresponding components may be omitted. However, even if a description of a component is omitted, it is not intended that such component is not included in any embodiment.

[0053] The reinforcing bar tying device for tunnel construction according to the present invention is used in reinforcing bar structures such as tunnels and buildings, and relates to a tying device that is arranged at the intersection of main reinforcing bars and transverse reinforcing bars to tie the main reinforcing bars and transverse reinforcing bars together with wire. Typically, wires are provided to fix intersecting reinforcing bars such as main reinforcing bars and transverse reinforcing bars, and the wires are inserted into the intersection of reinforcing bars and twisted to tie the intersecting reinforcing bars. The present invention enables such tying wires to be automatically performed.

[0054] A reinforcing bar assembly fastening device (100) for such tunnel construction is configured to include a housing (110), a wire transfer unit (120), a gripping and cutting unit (130), a bending unit (140), and a control unit (150).

[0055] The above housing (110) constitutes the body of the fastening device (100) and is composed of an upper plate (111), a side plate (112), a bottom plate (113), and a lower side plate (114).

[0056] The above upper plate (111) is arranged on the upper part of the housing (110). The upper plate (111) is formed in the form of a thin plate. A connecting part (1111) is fixedly installed on the upper plate (111). The connecting part (1111) is detachably installed on an arm of an automation device (100) such as a robot. This upper plate (111) constitutes the upper part of a hexahedron formed by the upper plate (111), side plates (112), and bottom plates (113).

[0057] The above-mentioned coupling part (1111) is positioned on the upper part of the housing (110) and is fixedly installed on the arm of an automation device (100) such as a robot. This coupling part (1111) has a structure in which the upper part is formed in the shape of a disc and a number of bolts can be fastened, so that it is detachably installed on the arm of the robot.

[0058] When the connecting part (1111) is connected to the arm of the robot, the reinforcing bar tying work can be performed by placing the reinforcing bar assembly tying device (100) for the tunnel construction close to the cross reinforcing bar.

[0059] The above side plates (112) are arranged to extend downward from both edges of the upper plate (111). A central hole is formed in the center of the side plates (112). The side plates (112) are arranged in pairs facing each other, and a driving motor (1321) is arranged between the pair of side plates (112).

[0060] The above-mentioned bottom plate (113) is placed at the bottom of a pair of side plates (112). The bottom plate (113) is extended forwardly, and a plate-shaped member on which a driving motor (1321) is mounted is provided at a position corresponding to the side plates (112), and a square frame is formed at the front of the plate member.

[0061] A wire passage portion (1131) penetrating the inside and penetrating toward the front is formed in the plate portion of the floor plate (113), and a gear receiving portion (1132) communicating with the wire passage portion (1131) is formed in the center of the plate portion. A first driving gear (122) and a first driven gear are arranged in the gear receiving portion (1132).

[0062] A support member (1133) is installed at the rear end of the square frame of the above-mentioned floor plate (113) to support the screw member (131). The screw member (131) can be supported by being inserted into the support member (1133).

[0063] A catch (1134) is formed protrudingly inside the square frame of the above-mentioned floor plate (113). Specifically, the catch (1134) is configured to protrude inward so as to be caught on the protruding part of the second slider.

[0064] The central lower part of the plate portion of the above-mentioned floor plate (113) is configured to have a transport motor (121) coupled with a first driving gear (122).

[0065] In the above-mentioned floor plate (113), an operating motor (1141) connected to a chain or the like is installed to drive a bending section (140) at the front lower portion of the plate. The operating motor (1141) is configured to be connected to each joint of the operating section by a chain, and is configured to roll or unfold the bending section (140) when the operating motor (1141) is driven.

[0066] The lower side plate (114) is fixedly installed to the lower part of the square frame of the floor plate (113). The lower side plates (114) are installed in pairs extending in the front-back direction. A grip and cutting section (130) is arranged between the lower side plates (114), and a bending section (140) is configured to be installed rotatably at the front of the lower side plate (114).

[0067] The above wire transfer unit (120) is placed in the housing (110) and moves the wire (W) for binding the cross reinforcing bars (S) in one direction or the other.

[0068] The wire transfer unit (120) is disposed in the housing (110) and comprises a transfer motor (121), a first driving gear (122), and a first driven gear (123). Specifically, the transfer motor (121) is disposed on the lower side of the housing (110) and rotates in a forward and reverse direction to rotate the first driving gear (122). The transfer motor (121) has a drive shaft facing upward, and a first driving gear (122) is disposed on the drive shaft.

[0069] The first driving gear (122) is inserted into the gear receiving portion (1132) and the first driven gear (123) is provided adjacent to it.

[0070] The above first driven gear (123) moves the wire in one direction or the other direction while the wire is inserted between the first driving gear (122).

[0071] A wire (W) passes between the first driving gear (122) and the first driven gear, which face each other. At this time, the wire (W) is configured to move forward or backward as the pair of the first driving gear (122) and the first driven gear (123) rotates.

[0072] When the feed motor (121) rotates in the forward direction, the wire moves in one direction, and the wire passes through the piercing and cutting section (130) and is then supplied to the bending section (140) and is configured to protrude a predetermined portion from the bending section (140).

[0073] Afterwards, the bending section (140) operates to roll up the cross reinforcing bars, and after the wire (W) is gripped by the gripping and cutting section (130), the transport motor (121) rotates in the reverse direction to move the wire backwards, and in this process, the wire loosely wrapped around the cross reinforcing bars can be tightly wrapped around the cross reinforcing bars.

[0074] The above-mentioned gripping and cutting unit (130) is connected to the wire transport unit (120) and can grip and cut the wire (W). Specifically, the gripping and cutting unit (130) is configured to perform the task of gripping while cutting the wire (W) or gripping the tip of the wire (W) as a single component.

[0075] This phage and cutting part (130) is composed of a screw member (131), a driving member (132), a slide member (133), a support member (1133), a base member (135), a first tool member (136), and a second tool member (137).

[0076] The screw member (131) has a wire penetration portion formed in the center so that a wire (W) moving by the wire conveying member (120) passes through it. The screw member (131) rotates by receiving rotational force from the driving member (132). Screw threads are formed on the outer circumferential surface of the screw member (131). Specifically, male screw threads are formed on the outer circumferential surface of the screw member (131). The screw member (131) has a second driven gear (1311) formed on one side and is connected to a base member (135) on the other side. Screw threads extend in the longitudinal direction between the one side and the other side. The screw member (131) is configured to be axially supported by a support member (1133).

[0077] The above second driven gear (1311) is configured to mesh with the second driving gear (1322) of the driving unit (132) and to receive power from the driving unit (132).

[0078] The above driving unit (132) may be composed of a driving motor (1321) installed on the bottom plate (113) of the housing (110) and a second driving gear (1322) arranged on the driving shaft of the driving motor (1321). When the driving motor (1321) is fixedly installed on the bottom plate (113), the second driving gear (1322) connected to the driving shaft engages with the second driven gear (1311) to allow the screw member (131) to rotate.

[0079] The above slide member (133) is positioned on the outside of the base member (135) so as to be able to slide relative to the base member (135). This slide member (133) includes a first slider (1331) and a second slider (1332).

[0080] The first slider (1331) is arranged between the lower plate (114) of the housing (110) together with the screw member (131). Specifically, it engages with the screw threads of the screw member (131) and can slide along the longitudinal direction of the screw member (131) by the rotation of the screw member (131). The first slider (1331) is formed in a cylindrical shape with an empty interior and is configured to move forward or backward by engaging with the screw threads formed on the outer circumferential surface of the screw member (131) according to the rotation of the screw member (131). The first slider (1331) is connected to the screw member (131) by a ball screw coupling. The first slider (1331) can slide while rotating according to the rotation of the screw member (131), and can also slide without rotating if necessary.

[0081] The second slider (1332) is configured to wrap around the outer surface of the first slider (1331). The second slider operates together with the first slider (1331). It is formed in a larger tubular shape than the first slider (1331) so as to wrap around the first slider (1331). The second slider (1332) is configured to be fixedly connected to the first slider (1331) by a fixing pin so that when the first slider (1331) moves forward, it moves forward together with the first slider (1331), and when the first slider (1331) moves backward, it moves backward together with the first slider (1331).

[0082] A pair of protrusions (1332a) are formed on the outer surface of the second slider (1332) so as to face each other. Specifically, the protrusions (1332a) protrude toward the frame (138). They are configured to extend a predetermined length forward from the rear end of the first slider (1331). These protrusions (1332a) catch on or are separated from the catch (1134) of the bottom plate (113), thereby allowing the second slider (1332) to slide without rotation or simultaneously with rotation.

[0083] Specifically, the second slider (1332) is placed within a frame (138) having an accommodation space formed therein. A catch (1134) is formed on the frame (138) so as to protrude toward the second slider (1332) and extend a predetermined length along the longitudinal direction of the second slider (1332). When the protruding piece (1332a) comes into contact with the catch (1134) and is caught, the second slider (1332) slides linearly without rotation, and when it is free from the catch (1134), the second slider (1332) can slide while rotating together with the first slider.

[0084] Specifically, after one end of the wire (W) is broken, a part of the wire (W) is cut, and the other end of the wire (W) is broken, the second slider (1332) must rotate for twisting. At this time, the protruding piece (1332a) passes through the catch (1134) to enable the second slider (1332) to rotate.

[0085] A fixed tool (1332b) that can be combined with the first-first gripping portion (1362) of the first tool member (136) is formed on the outer surface of the tip of the second slider (1332). Specifically, the fixed tool (1332b) is configured to be engaged with the first-first gripping portion (1362), thereby being configured to grip the tip of the wire (W).

[0086] The above-mentioned support member (1133) is for installing the screw member (131) in a frame (138) that is arranged around the first driven gear (1311) and surrounds the screw member (131). The support member (1133) fixedly installed in the frame (138) supports the screw member (131) axially.

[0087] The above base member (135) is composed of a connecting portion (1351), an upper support piece (1352) extending horizontally from one side of the upper portion of the connecting portion (1351), and a lower support piece (1353) extending horizontally from one side of the lower portion of the connecting portion (1351) and spaced apart from the upper support piece (1352).

[0088] The above connecting portion (1351) is connected to the tip of the screw member (131) so as to be relatively rotatable. The connecting portion (1351) is connected non-rotatably within the second slider (1332), so that even if the screw member (131) rotates, the base member (135) does not rotate and can maintain its position.

[0089] The upper support piece (1352) extends along the longitudinal direction of the wire. A first protruding pin (1352a) is formed to protrude downward on the upper support piece (1352). The first protruding pin (1352a) is fitted into the first guide groove (1361a) of the first tool member (136) to guide the movement path of the first tool member (136). This first protruding pin (1352a) is configured to be fitted into a small hole formed in the upper support piece (1352). The first protruding pin (1352a) in the form of a thin pin is configured to protrude toward the inside of the upper support piece (1352) and the lower support piece (1353).

[0090] When the first protruding pin (1352a) is fitted into the first guide groove (1361a), the first tool member (136) moves along a path designed by the designer according to the shape of the first guide groove (1361a).

[0091] The above lower support piece (1353) is formed so that the second protruding pin (1353a) protrudes upward. The second protruding pin (1353a) is fitted into the second guide groove (1371a) of the second tool member (137) to guide the movement path of the second tool member (137). The second protruding pin (1353a) is configured to be fitted into a small hole formed in the lower support piece (1353). The second protruding pin (1353a) in the form of a thin pin is configured to protrude toward the inside of the lower support piece (1353).

[0092] A first tool member (136) and a second tool member (137) are arranged between the upper support member (1352) and the lower support member (1353), and the first tool member (136) is arranged on the upper support member (1352) side and the second tool member (137) is arranged on the lower support member (1353) side.

[0093] Specifically, when the second protruding pin (1353a) is fitted into the second guide groove (1371a), the second tool member (137) moves along a path designed by the designer according to the shape of the second guide groove (1371a).

[0094] The first tool member (136) is configured to be connected to the second slider (1332) and to operate by the movement of the second slider (1332). The first tool member (136) performs a cutting operation of a gripper or wire (W) in cooperation with the fixed tool (1332b) or the second tool member (137). Specifically, the first tool member (136) is arranged between the upper support member (1352) and the lower support member (1353). A first guide groove (1361a) is formed in the first tool member (136). A first protruding pin (1352a) of the base member is fitted into the first guide groove (1361a) to guide the movement path. When the above slide member (133) slides along the length of the wire, the first tool member (136) moves along the path of the first guide groove (1361a) and engages with the second tool member (137) or the fixed tool to grip or cut the wire.

[0095] This first tool member (136) includes a first main body (1361), a first-first gripping part (1362), a first-second gripping part (1363), and a first cutting blade (1364).

[0096] The first main body (1361) is formed in a roughly square plate shape and is protruded from the tip of the second slider (1332). The first main body (1361) is rotatably coupled to the tip of the second slider (1332) by a first pin (1361b). In addition, a first guide groove (1361a) having a predetermined path is formed on the upper surface of the first main body (1361). A first protruding pin (1352a) is fitted into the first guide groove (1361a). Since the first protruding pin (1352a) is fixedly installed on the upper support piece (1352) whose position is fixed, when the first tool member (136) slides, the first tool member (136) moves linearly or rotationally according to the path of the first guide groove (1361a).

[0097] The first guide groove (1361a) includes a curved section and a straight section. The curved section is formed at the front of the first guide groove (1361a) to rotate the first tool member (136), and accordingly, the first tool member (136) rotates. Accordingly, the first-first gripping portion (1362) rotates to approach the fixed tool (1332b).

[0098] In addition, after the tip of the wire (W) is gripped, the first tool member (136) moves in a straight line while maintaining the state of gripping the tip of the wire (W) by entering a straight section. When the first tool member (136) moves in a straight line in this way, the second tool member (137) rotates, and accordingly, the first tool member (136) can cut the wire (W) in cooperation with the second tool member (137).

[0099] The above-mentioned first-first gripping portion (1362) protrudes from the upper surface of the first main body (1361). The first-first gripping portion (1362) is configured to be engaged with the fixing tool (1332b) by the rotation of the first tool member (136). The first-first gripping portion (1362) has an inwardly concave groove formed on one side thereof so that the first fixing tool (1332b) can be fitted therein. By inserting the first fixing tool (1332b) into the concave groove, the free end of the wire (W) fitted therebetween can be gripped.

[0100] The above 1-2 gripping portion (1363) protrudes from the back surface of the 1st main body (1361). The 1-2 gripping portion cooperates with the 2nd gripping portion (1372) of the 2nd tool member (137) to grip the wire (W). This 1-2 gripping portion (1363) is for gripping the wire (W) cut by the 1st cutting blade (1364) and the 2nd cutting blade (1373). The 1-2 gripping portion (1363) rotates close to the 2nd gripping portion (1372) to grip the wire (W) located therebetween. This 1-2 gripping portion (1363) has an approximately “ㄱ” cross-sectional shape.

[0101] Specifically, the first-first gripping part (1362) and the fixed tool (1332b) grip the free end of the wire, and the first-second gripping part (1363) and the second gripping part (1372) grip the end of the cut wire. In other words, one end and the other end of the cut wire are configured to be gripped by the first and second tool members (136, 137), respectively.

[0102] The first cutting blade (1364) is formed on one edge of the first main body (1361) on the opposite side from the 1-2 grip portion and has a sharp blade shape. The first cutting blade (1364) is formed on the side facing the second tool member (137). The first cutting blade (1364) is configured to cut the wire (W) that has passed through the screw member (131) in cooperation with the first cutting blade (1364) of the second tool member (137). That is, the first cutting blade (1364) and the second cutting blade (1373) are formed in order to cut the wire for tying the cross reinforcing bars so that the wire has a predetermined length.

[0103] This first cutting blade (1364) is configured to cut the wire (W) in cooperation with the second cutting blade (1373) of the second tool member (137) while rotating toward the second tool member (137).

[0104] The second tool member (137) cooperates with the first tool member (136) to cut the wire (W) or grip the wire (W). Specifically, the second tool member (137) is composed of a second body (1371), a second gripping portion (1372), and a second cutting blade (1373).

[0105] The second body (1371) is formed in a roughly square plate shape. A second pin (1371b) is inserted into one side of the second body (1371) and is rotatably coupled to the second slider (1332). In addition, a second guide groove (1371a) is formed on the back surface of the second body (1371). The second protruding pin (1353a) fixed to the lower support piece (1353a) is configured to be fitted into the second guide groove (1371a).

[0106] The above second guide groove (1371a) includes a straight section and a curved section. Accordingly, the second guide groove (1371a) initially extends in a straight line and later has a curved shape, so that the second tool member (137) slides forward when the second slider (1332) initially moves in a straight line, and rotates toward the latter part.

[0107] Specifically, at the beginning of movement, only the first tool member (136) rotates so that the first tool member (136) grips the free end of the wire together with the fixed tool (1332b). After the free end of the wire is gripped, the first tool member (136) moves linearly without rotation. Thereafter, the second tool member (137) rotates to cut a portion of the continuously supplied wire. After the second tool member (137) rotates and cuts a portion of the wire, it is configured to rotate further so that the end of the cut portion of the wire is gripped in cooperation with the first tool member (136).

[0108] The above second gripping part (1372) is provided at the tip of the second tool member (137). The second gripping part (1372) cooperates with the first-second gripping part (1363) to grip the cut portion of the wire. Specifically, the second gripping part (1372) grips the end of the cut portion of the wire wrapping the cross-reinforcing bar. This second gripping part (1372) is formed in a hook shape that is concave inward, so that the first-second gripping part (1363) engages with the concave portion to grip the tip of the wire (W).

[0109] One end of the wire (W) is bent by the bending part (140) and then gripped by the first-first gripping part (1362) and the fixing tool (1332b), and the other end of the wire (W) that is created after being cut by the first cutting blade (1364) and the second cutting blade (1373) is configured to be gripped by the first-second gripping part (1363) and the second gripping part (1372).

[0110] The second cutting blade (1373) is formed on one edge of the second gripping portion (1372) and has a sharp blade shape. Specifically, the second cutting blade (1373) is formed on a side of the second main body facing the first cutting blade (1364). The second cutting blade (1373) cooperates with the first cutting blade (1364) to cut the wire (W) passing through the screw member (131) so that the wire (W) wrapping the cross reinforcing bar (S) has a predetermined length. When the second tool member (137) rotates close to the first tool member (136), the wire (W) positioned between the first cutting blade (1364) and the second cutting blade (1373) is cut.

[0111] The above-mentioned bending portion (140) is configured to roundly roll up the wire (W) that has passed through the above-mentioned gripping and cutting portion (130) so that the tip of the wire (W) can be gripped by the gripping and cutting portion (130). Specifically, the bending portion (140) is inserted through the intersection of the cross reinforcing bars (S) and then bent to wrap around the intersection of the cross reinforcing bars (S). The bending portion (140) includes a plurality of arms (141), a plurality of joints (142) that hinge-connect the arms (141), and a bending mechanism that bends the plurality of arms (141). The bending mechanism is composed of a plurality of gears, chains, etc., and the chains (not shown) are connected to an operating motor (1141). The power generated by the operating motor (1141) rotates the gears, thereby bending the bending portion (140) in a straight or curved manner.

[0112] Meanwhile, a guide portion for guiding a wire (W) is formed in the arm (141) of the bending portion (140), so that the wire (W) passes between the guide portions, and once inserted into the guide portion, the wire (W) is prevented from coming off during the bending process of the bending portion (140). This bending portion (140) wraps the wire (W) in a circular manner so that the wire (W) is placed between the first-first grip portion (1362) and the fixing tool (1332b).

[0113] The above control unit (150) is connected to the wire transport unit (120), the gripping and cutting unit (130), and the bending unit (140). Specifically, the control unit (150) is connected to the transport motor (121) of the wire transport unit (120), the drive motor (1321) of the gripping and cutting unit (130), and the operating motor (1141) for operating the bending unit (140).

[0114] This control unit (150) moves the wire by rotating the feed motor (121) in the forward direction, wraps the wire around the cross reinforcing bar by the bending unit (140), and then positions the end of the wire on the gripping and cutting unit (130). Thereafter, after the gripping and cutting unit (130) grips the end of the wire, the feed motor (121) is rotated in the reverse direction to move the wire in the other direction, thereby tightly wrapping the wire (W) around the cross reinforcing bar.

[0115] Afterwards, after the wire is tightly wound around the cross-bar, the wire is cut by the cutting and severing section (130) and the bending section (140) by the cutting and severing section (130). Specifically, the wire is cut by rotating the driving motor (1321).

[0116] Afterwards, the control unit (150) additionally rotates the driving motor (1321) to cause the cutting and gripping unit (130) to grip the cut portion of the wire. In this way, the holding and cutting unit (130) grips both ends of the wire having a predetermined length while wrapping around the cross reinforcing bars. Afterwards, when the driving motor (1321) additionally rotates, the holding and cutting unit (130) rotates while gripping the ends of the wire and the cut portion of the wire together to twist and tie the wire around the cross reinforcing bars.

[0117] The reinforcing bar assembly fastening device (100) for tunnel construction according to the present invention has the following effects.

[0118] First, the wire (W) transported by the wire transport unit (120) passes through the screw member (131), passes between the first tool member (136) and the second tool member (137), and is guided to the tip of the bending portion (140). As illustrated in FIG. 4, the wire (W) is guided to the tip of the bending portion (140) and then its transport is stopped. Thereafter, the bending portion (140) is inserted between the cross reinforcing bars (S), and then the bending portion (140) is bent to wrap around the intersection of the cross reinforcing bars (S), so that the tip of the wire (W) is arranged between the first-first holding portion (1362) and the fixed tool (1332b), as illustrated in FIG. 8.

[0119] Thereafter, the driving unit (132) operates to rotate the screw member (131). Accordingly, the first slider (1331) slides along the screw member (131), and accordingly, the second slider (1332) also moves forward together with the first slider (1331). As the second slide moves, the first tool member (136) rotates by the first guide groove (1361a).

[0120] As illustrated in FIG. 9, the first tool member (136) rotates so that the first-first gripping portion (1362) engages with the fixed tool (1332b). Thereafter, when the tip of the wire (W) is engaged and gripped between the first-first gripping portion (1362) and the fixed tool (1332b), the transfer motor (121) is rotated in the opposite direction as illustrated in FIG. 10 so that the wire (W) can be tightly wrapped around the intersection of the cross-reinforcing bars (S).

[0121] Specifically, when the transfer motor (121) is rotated in reverse, the wire can be pulled taut around the cross-reinforcing bars while the tip is gripped by the gripping and cutting section (130). Accordingly, the wire is not loosely tied around the cross-reinforcing bars, allowing the cross-reinforcing bars to be stably supported by the wire.

[0122] Thereafter, the driving unit (132) operates to further rotate the screw member (131). Accordingly, the first slider (1331) slides along the screw member (131). Accordingly, the second slider (1332) also moves forward together with the first slider (1331). Accordingly, the first tool member (136) and the second tool member (137) rotate in a direction facing each other, and as illustrated in FIG. 11, the wire (W) sandwiched between the first cutting blade (1364) and the second cutting blade (1373) is configured to be cut. Afterwards, when the screw member (131) is additionally rotated, the second tool member (137) is additionally rotated, and the other end of the wire (W) (around the cut portion of the wire (W)) is gripped by the first and second gripping members (1363) and the second gripping member (1372).

[0123] In this way, when one end and the other end of the wire (W) are gripped by the first tool member (136) and the second tool member (137), and the screw member (131) is additionally rotated, the protruding piece (1332a) passes the catch (1134) and the first slider (1331) and the second slider (1332) rotate, and accordingly, as shown in FIG. 12, the two ends of the wire (W) are twisted and twisted while being gripped.

[0124] Finally, the appearance of the wire (W) tied around the cross reinforcing bar (S) is illustrated in Fig. 13.

[0125] The reinforcing bar assembly fastening device (100) for tunnel construction according to the present invention is configured so that when the screw member (131) rotates while the wire (W) passes through the inside of the screw member (131), a series of operations such as gripping and cutting the wire (W) can be performed by a single gripping and cutting unit (130), so that the overall structure can be simplified and there is an advantage in that the overall structure can be simplified. In addition, by rotating the transport motor (121) in a state gripped by the gripping and cutting unit (130) in reverse so that the wire can be tightly pressed around the cross reinforcing bar, the cross reinforcing bar can be firmly supported by the wire with a simple structure.

[0126] Although the reinforcing bar assembly fastening device for tunnel construction of the present invention has been described above with reference to various examples, it is not limited thereto, and anything that can be reasonably interpreted from the scope of the present invention naturally falls within the scope of the present invention.

Claims

1. In a reinforcing bar tying device for assembling a cage for tunnel construction that ties wires to cross reinforcing bars, A wire transfer unit that moves wires to tie cross bars; A gripping and cutting unit connected to the above wire transport unit and capable of gripping and cutting the wire; A bending section for winding the wire passing through the above-mentioned breaking and cutting section around the cross-reinforcing bar and then supplying the end of the wire to the breaking and cutting section; and It includes a control unit connected to the wire transfer unit, the gripping and cutting unit, and the bending unit, The above wire transfer unit includes a transfer motor that rotates in a forward or reverse direction to rotate the first drive gear, and a first driven gear that moves the wire in one direction or the other direction while inserting the wire between the first drive gear, A reinforcing bar tying device for assembling a cage for tunnel construction, characterized in that the control unit rotates the feed motor in the forward direction to move the wire so that it wraps around the cross reinforcing bar by the bending unit, and then positions the end of the wire in the gripping and cutting unit, and then, after the gripping and cutting unit grips the end of the wire, rotates the feed motor in the reverse direction to move the wire in the other direction so that the wire is tightly wound around the cross reinforcing bar.

2. In paragraph 1, A reinforcing bar tying device for assembling a cage for tunnel construction, characterized in that the control unit cuts the wire passing continuously between the breaking and cutting section and the bending section by the breaking and cutting section after the wire is tightly wound around the cross reinforcing bar.

3. In paragraph 2, A reinforcing bar tying device for assembling a cage for tunnel construction, characterized in that the control unit causes the cut portion of the wire to be gripped and the cut portion to be gripped.

4. In paragraph 3, A reinforcing bar tying device for assembling a cage for tunnel construction, characterized in that the above-mentioned gripping and cutting part rotates while gripping the end of the wire and the cut part of the wire together to twist and tie the wire around the cross reinforcing bar.

5. In paragraph 4, The above-mentioned phage and cutting part, A slide member on which a fixed tool is installed; A first tool member rotatably connected to one side of the slide member so as to approach or move away from the fixed tool and capable of engaging with the fixed tool to grip the end of the wire; and A reinforcing bar tying device for assembling a cage for tunnel construction, characterized in that it includes a second tool member that is rotatably connected to the other side of the slide member so as to approach or move away from the first tool member, and that can cut wire in cooperation with the first tool member and grip the cut wire.

6. In paragraph 5, A reinforcing bar tying device for assembling a cage for tunnel construction, characterized in that the first tool member includes a first main body having a flat plate shape and a first-first gripping portion that protrudes upward from one side of the first main body and can be engaged with the fixed tool while rotating.

7. In paragraph 6, A first-second gripping portion is further provided to protrude downward from the other side of the first main body. A reinforcing bar tying device for assembling a cage for tunnel construction, characterized in that the second tool member includes a second main body having a flat plate shape and a second gripping part formed to have a hook shape at an edge of the second main body and capable of engaging with the first and second gripping parts.

8. In paragraph 7, A sharp first cutting blade is formed on one edge of the first main body, A reinforcing bar tying device for assembling a cage for tunnel construction, characterized in that a second cutting blade for cutting wire in cooperation with the first cutting blade is formed on a side of the second main body facing the first cutting blade.

9. In a reinforcing bar tying device for assembling a cage for tunnel construction that ties wires to cross reinforcing bars, A wire transfer unit that moves wires in one or the other direction to tie cross bars; A gripping and cutting unit connected to the above wire transport unit and capable of gripping and cutting a wire moving in one direction; A bending section that rolls up the wire that has passed through the above-mentioned phage and cutting section into a round shape and supplies the end of the wire to the phage and cutting section; and It includes a control unit connected to the wire transfer unit, the gripping and cutting unit, and the bending unit, The above control unit, A reinforcing bar tying device for assembling a cage for tunnel construction, characterized in that a wire supplied in one direction through a wire conveying section is wrapped around a cross reinforcing bar by a bending section, the end of the wire is positioned in a gripping and cutting section, and then the end of the wire is gripped by the gripping and cutting section, and the wire is moved in one direction and the opposite direction so that the wire is tightly wound around the cross reinforcing bar.

10. In paragraph 9, A reinforcing bar tying device for assembling a cage for tunnel construction, characterized in that the wire transport unit includes a transport motor that rotates in a forward and reverse direction to rotate a first driving gear, and a first driven gear that moves a wire in one direction or the other direction while inserting the wire between the first driving gear and the first driving gear.

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