Binding device for assembling reinforcing bar for tunnel construction

Abstract

The present invention relates to a binding device for assembling a reinforcing bar for tunnel construction, the binding device comprising a wire transfer unit, a gripping and cutting unit, and a bending unit, wherein the gripping and cutting unit comprises: a slide member disposed outside a base member to be slidable relative to the base member; and first and second guide grooves disposed between an upper support piece and a lower support piece, wherein a first and a second protruding pin of the base member are inserted into a first and a second guide groove, respectively, to guide a moving path.

Description

Fastening device for assembling rebar for tunnel construction

[0001] The present invention relates to a reinforcing bar assembly fastening device for tunnel construction, and more specifically, to a reinforcing bar assembly fastening device for tunnel construction that can easily perform the fastening 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 tying device (10) called a rebar tying device has been proposed 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). The 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 twists the wire by driving the gripping mechanism.

[0004] The binding machine sequentially operates the wire transport mechanism, the gripping mechanism, and the wire twisting mechanism by trigger operation to perform one cycle of binding operation. The binding machine 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] Meanwhile, when binding rebar with wire, if the binding is loose, the rebars may misalign, requiring strong support and retention. Therefore, a technique has been proposed that involves winding wire around the rebar in the opposite direction, wrapping it around the rebar. Another technique involves transporting the wire using a pair of rotating rollers.

[0006] These conventional binding devices all perform wire gripping, cutting, and twisting by different structures, so not only does the binding device become larger, but the internal structure of the binding device is complex, which makes it prone to failure.

[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 assembly fastening device for tunnel construction, which can achieve a series of operations such as wire gripping, cutting, and twisting in a single structure, thereby simplifying the overall structure and saving work time.

[0008] In order to achieve the above-described technical purpose, the present invention provides a reinforcing bar assembly fastening device for tunnel construction, which is a reinforcing bar assembly fastening device for fastening wires to crossed reinforcing bars.

[0009] It includes a wire transfer unit that moves a wire in one direction to tie crossed reinforcing bars, a gripping and cutting unit that is connected to the wire transfer unit and can grip and cut the wire that moves in one direction, and a bending unit that rolls up the wire that has passed through the gripping and cutting unit into a round shape so that the tip of the wire can be gripped by the gripping and cutting unit.

[0010] The above-mentioned phage and cutting part,

[0011] A base member having an upper support piece extending along the length of the wire and having a first protruding pin protruding downward, and a lower support piece spaced apart from the lower side of the upper support piece and having a second protruding pin protruding upward;

[0012] A slide member positioned on the outside of the base member so as to be able to slide relative to the base member; and

[0013] It includes first and second guide grooves arranged between the upper and lower support pieces and guiding the movement paths of the first and second protruding pins of the base member by being respectively fitted therein, and first and second tool members that move along the paths of the first and second guide grooves by the sliding action of the slide member and engage with each other to grip or cut the wire accordingly.

[0014] In the above reinforcing bar assembly fastening device,

[0015] The first tool member includes a first main body having a flat shape and having a first guide groove formed on the upper surface and rotatably connected to the slide member.

[0016] The second tool member may include a second body having a flat plate shape, a second guide groove formed on the lower surface, and rotatably connected to the slide member.

[0017] In the above reinforcing bar assembly fastening device,

[0018] The first guide groove includes a first straight groove extending along the length of the wire and a first inclined groove inclined with respect to the first straight groove,

[0019] When the first protruding pin passes through the first straight groove, the first tool member slides linearly together with the slide member,

[0020] When the first protruding pin passes through the first inclined groove, the first tool member can rotate relative to the slide member.

[0021] In the above reinforcing bar assembly fastening device,

[0022] The second guide groove includes a second inclined groove inclined with respect to the longitudinal direction of the wire and a second straight groove extending along the longitudinal direction of the wire,

[0023] When the second protruding pin passes through the second inclined groove, the second tool member rotates relative to the slide member,

[0024] When the second protruding pin passes through the second straight groove, the second tool member can slide linearly together with the slide member.

[0025] In the above reinforcing bar assembly fastening device,

[0026] A fixed tool is fixedly installed on one side of the above slider,

[0027] The above first tool member is,

[0028] It may include a first-first gripping portion that protrudes upward from one side of the first main body and can be engaged with the fixed tool of the second slider while rotating.

[0029] In the above reinforcing bar assembly fastening device,

[0030] The above first tool member is,

[0031] Having a first-second grip portion protruding downward from the other side of the first main body,

[0032] The above second tool member is,

[0033] A second gripping portion may be formed to have a hook shape at the edge of the second main body and may be provided to engage with the first and second gripping portions.

[0034] In the above reinforcing bar assembly fastening device,

[0035] A sharp first cutting blade is formed on one edge of the first main body,

[0036] A second cutting blade that cuts the wire in cooperation with the first cutting blade can be formed on the side of the second body facing the first cutting blade.

[0037] In the above reinforcing bar assembly fastening device,

[0038] The first tool member and the second tool member can, after the first cutting blade and the second cutting blade cooperate to cut the wire, cooperate with the first-second gripping unit and the second gripping unit to grip the peripheral portion of the cut wire.

[0039] In the above reinforcing bar assembly fastening device,

[0040] The first guide groove of the above first tool member is connected from the first straight groove to the first curved groove, so that the first tool member can cut the wire in cooperation with the second tool member while moving linearly, and can grip the cut wire in cooperation with the second tool member while moving rotationally.

[0041] In the above reinforcing bar assembly fastening device,

[0042] The second guide groove of the second tool member is connected from the second curved groove to the second straight groove, and after the free end of the wire is gripped by the fixed tool, the second guide groove can be moved linearly while maintaining the gripped state of the free end of the wire and engage with the first tool member while the free end of the wire is gripped.

[0043] In the above reinforcing bar assembly fastening device,

[0044] The above-mentioned phage and cutting part,

[0045] The screw member may further include a wire penetration portion formed in the center so that a wire moving by a wire conveying portion passes through it and a screw thread formed on the outer surface, and a driving portion that rotates the screw member.

[0046] In the above reinforcing bar assembly fastening device,

[0047] The above slide member has a female screw portion formed on the inner surface thereof that engages with the screw member and moves linearly according to the rotation of the screw member.

[0048] The above base member can be rotatably coupled to the tip of the screw member.

[0049] The reinforcing bar assembly fastening device 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, as the first and second tool members perform the actions of gripping, cutting, and twisting the wire while moving straight and rotating by the slide member and the base member.

[0050] Figure 1 is a drawing showing an example of a conventional reinforcing bar assembly fastening device for tunnel construction.

[0051] Figure 2 is a perspective view of a reinforcing bar assembly fastening device for tunnel construction according to one embodiment of the present invention.

[0052] Figure 3 is a plan view of Figure 2.

[0053] Figure 4 is a side cross-sectional view of Figure 2.

[0054] Fig. 5 is a perspective view showing the bending portion in Fig. 2.

[0055] Figure 6 is a perspective view of Figure 5 viewed from the rear.

[0056] Fig. 7 is an enlarged side view of the bend in Fig. 5.

[0057] Figures 8 to 13 are drawings showing the operation of a reinforcing bar assembly fastening device for tunnel construction of Figure 2.

[0058] Figure 14 is a drawing showing a cross-reinforcing bar with wires tied together.

[0059] Figures 15 to 17 are exploded perspective views of the phage and cutting portions of Figure 2.

[0060] 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.

[0061] In this disclosure, "embodiment" is an arbitrary distinction used to facilitate the technical concept of the present disclosure, and each embodiment need not be 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] The present invention relates to a tying device for assembling reinforcing bars for tunnel construction, which is used in reinforcing bar structures such as tunnels and buildings, and which 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 wires. 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 formed.

[0070] A reinforcing bar assembly fastening device (100) for such tunnel construction is configured to include a joining part (110), a wire transfer part (120), a cutting and gripping part (130), and a bending part (140).

[0071] The above-mentioned coupling part (110) is arranged on the upper part of the second housing (1323). The coupling part (110) is fixedly installed on an arm of an automated device such as a robot. The upper part of this coupling part (110) is formed in a circular shape. The upper part of the coupling part (11) has a structure (fastening hole) to which a number of bolts can be fastened, so that it is configured to be detachably installed on the arm of the robot.

[0072] When the connecting part (110) 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 (S).

[0073] The above wire transfer unit (120) is at least partially disposed within the second housing (1323). The wire transfer unit (120) moves a wire (W) for binding crossed reinforcing bars (S) in one direction. The wire transfer unit (120) is configured to include a transfer motor (121) and a plurality of gears. Specifically, the transfer motors (121) are composed of a plurality of units and are disposed on both sides of the center of the second housing (1323). A gear is disposed on the drive shaft of the transfer motor (121). The gears are disposed between the transfer motors (121) facing each other so as to face each other. The wire (W) passes between the gears facing each other. At this time, when a pair of gears rotates in one direction, the wire (W) between them moves. Specifically, the wire (W) moves forward between the gears.

[0074] Meanwhile, if necessary, the transport motor (121) can also retract the wire (W) by rotating a pair of gears in one direction and the opposite direction. When the gears rotate in the reverse direction by the transport motor (121), the wire wrapped around the cross-reinforcing bar can be tightly tightened.

[0075] For example, after supplying the wire (W), the feed motor can rotate in the opposite direction to tighten the wire (W) at the intersection of the rebar (S).

[0076] The above wire gripping and cutting unit (130) is connected to the wire feeding unit (120) and can grip and cut the wire (W) supplied by the wire feeding unit (120). Specifically, the wire 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.

[0077] This wire gripping and cutting part (130) is composed of a screw member (131), a driving member (132), a slide member (133), a support member (134), a base member (135), a first tool member (136), and a second tool member (137).

[0078] The above screw member (131) has a wire (W) that moves by the wire conveying unit (120) passing through its center. For this purpose, a wire penetration portion is formed through the center of the screw member (131). The screw member (131) rotates by receiving rotational force from the driving unit (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). A driven gear (1311) is formed on one side of the screw member (131). The other side of the screw member (131) is connected to the base member (135). The screw threads are provided between one side and the other side of the screw member (131). The screw threads are formed to extend along the longitudinal direction of the screw member (131). The screw member (131) is configured to be axially supported by a support member (134).

[0079] The above-mentioned driven gear (1311) is configured to mesh with the driving gear (1322) of the driving unit (132) and to receive power from the driving unit (132).

[0080] The above driving unit (132) may be composed of a driving motor (1321) installed in a first housing (138) connected to a second housing (1323), and a driving gear (1322) arranged on a driving shaft of the driving motor (1321). When the driving motor (1321) is fixedly installed in the first housing (138), the driving gear (1322) connected to the driving shaft engages with the driven gear (1311) to allow the screw member (131) to rotate.

[0081] 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).

[0082] The first slider (1331) is arranged in the first housing (138) together with the screw member (131). The first slider (1331) engages with the screw threads of the screw member (131). The first slider (133) can slide along the longitudinal direction of the screw member (131) by the rotation of the screw member (131). The first slider (1331) has a cylindrical shape with an empty interior. The first slider engages with the screw threads formed on the outer circumferential surface of the screw member (131) and is configured to move forward or backward by the rotation of the screw member (131). That is, the first slider (1331) is connected to the screw member (131) by a ball screw coupling. This first slider (1331) can slide while rotating according to the rotation of the screw member (131), and can also slide without rotating as needed.

[0083] The second slider (1332) is configured to operate together with the first slider (1331) on the outer surface of the first slider (1331). The second slider (1332) surrounds the first slider (1331). The second slider (1332) has a larger tubular shape than the first slider (1331). The second slider (1332) is connected and fixed to the first slider (1331) by a fixing pin. The second slider (1332) is configured to move forward together with the first slider (1331) when the first slider (1331) moves forward, and to move backward together with the first slider (1331) when the first slider (1331) moves backward.

[0084] A pair of protrusions (1332a) are formed on the outer surface of the second slider (1332) so as to face each other. The protrusions (1332a) protrude toward the first housing (138) that surrounds the second slider (1332). The protrusions (1332a) are configured to extend a predetermined length forward from the rear end of the first slider (1331). When these protrusions (1332a) are caught or separated from the catch (1381) of the first housing (138), the second slider (1332) slides without rotation, or slides simultaneously with rotation.

[0085] Specifically, the second slider (1332) is placed in a first housing (138) in the form of a frame having an accommodation space formed therein. A catch (1381) is formed in the first housing (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 and catches the catch (1381), the second slider (1332) slides linearly without rotation, and when it is free from the catch (1381), the second slider (1332) can slide while rotating together with the first slider (1331).

[0086] 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 (1381) to enable the second slider (1332) to rotate.

[0087] 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).

[0088] The above-mentioned support member (134) is arranged around the driven gear (1311) and is intended to install the screw member (131) in the first housing (138) that surrounds the screw member (131). This support member (134) is configured to be fixedly installed at the rear of the first housing (138) so as to be able to axially support the screw member (131).

[0089] 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 (1353a) extending horizontally from one side of the lower portion of the connecting portion (1351) and spaced apart from the upper support piece (1352).

[0090] The above connecting portion (1351) is connected to the tip of the screw member (131) so as to be relatively rotatable. In addition, 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.

[0091] The upper support piece (1352) extends along the longitudinal direction of the wire. The upper support piece (1352) is provided with a first protruding pin (1352a) that is fitted into the first guide groove (1361a) of the first tool member (136). The first protruding pin (1352a) guides the movement path of the first tool member (136). The first protruding pin (1352a) is formed to protrude downward from the upper support piece (1352). 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) is formed in a thin pin shape.

[0092] 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).

[0093] The above lower support piece (1353) has a second protruding pin (1353a) that is fitted into the second guide groove (1371a) of the second tool member (137). The second protruding pin (1353a) guides the movement path of the second tool member (137). The second protruding pin (1353a) is formed to protrude upward from the lower support piece (1353). This second protruding pin (1353a) is configured to be fitted into a small hole formed in the lower support piece (1353). The second protruding pin (1353) has a thin pin shape.

[0094] 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). 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.

[0095] 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).

[0096] The above 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 paper or wire (W) in cooperation with a fixed tool (1332b) or a second tool member (137).

[0097] 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). The first protruding pin (1352a) of the base member is fitted into the first guide groove (1361a) to guide the movement path of the first tool member (136). When the slide member (133) slides along the longitudinal direction of the wire, it is configured to engage with the first tool member (136) or the fixed tool while moving along the path of the first guide groove (1361a) to grip or cut the wire.

[0098] 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).

[0099] 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), 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).

[0100] The above first guide groove (1361a) includes a first straight groove (1361ab) extending along the length direction of the wire, and a first inclined groove (1361aa) inclined with respect to the first straight groove (1361ab).

[0101] When the first protruding pin (1352a) passes through the first straight groove (1361ab), the first tool member (136) slides linearly together with the slide member (133). When the first protruding pin (1352a) passes through the first inclined groove (1361aa), the first tool member (136) can rotate relative to the slide member (133).

[0102] Specifically, the first inclined groove (1361aa) is formed to be positioned at the tip side of the first body (1361) farther away from the screw member (131) and to become more inclined as it goes toward the screw member (131). The first straight groove (1361ab) is formed to extend linearly from the first inclined groove (1361aa) toward the screw member (131).

[0103] At the beginning of movement, a curved section or an inclined section is formed, so that the first tool member (136) rotates. Accordingly, the first-first gripping portion (1362) rotates to approach the fixed tool (1332b). Specifically, as illustrated in FIG. 7, when the tip of the wire (W) guided by the bending portion (140) is positioned between the first-first gripping portion (1362) and the fixed tool (1332b), as illustrated in FIG. 8, when the first tool member (136) rotates by the first guide groove (1361a), the first tool member (136) approaches the fixed tool (1332b) and is configured to grip the tip of the wire (W).

[0104] In addition, after gripping the tip of the wire (W), the first tool member (136) moves in a straight line while maintaining the state of gripping the free tip of the wire 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).

[0105] The above-mentioned first-first gripping portion (1362) protrudes from the upper surface of the first main body (1361) and is configured to engage with the fixed 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 fixed tool (1332b) can be inserted therein. When the first fixed tool (1332b) is inserted into the concave groove of the first-first gripping portion (1362), the free end of the wire (W) inserted therebetween can be gripped.

[0106] The above first-second gripping portion (1363) protrudes from the back surface of the first main body (1361). The first-second gripping portion (1363) cooperates with the second gripping portion (1372) of the second tool member (137) to grip the wire (W). This first-second gripping portion (1363) passes through the shaft member and grips the wire (W) cut by the first cutting blade (1364) and the second cutting blade (1373).

[0107] The first-second gripping section (1363) rotates close to the second gripping section (1372) and can grip the wire (W) located therebetween. This first-second gripping section (1363) has an approximately “ㄱ” cross-sectional shape.

[0108] Specifically, the first-first gripping portion (1362) and the first fixed tool (1332b) grip the free end of the wire. The first-second gripping portion (1363) and the second gripping portion (1372) of the second tool member grip the end of the cut wire. In other words, one end and the other end of the wire are configured to be gripped.

[0109] 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.

[0110] 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).

[0111] 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).

[0112] 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). The second body (1371) is rotatably coupled to the second slider (1332) by the second pin (1371b). In addition, a second guide groove (1371a) is formed on the back surface of the second body (1371). The second protruding pin (1353a) fixedly installed on the lower support piece (1353a) is fitted into the second guide groove (1371a).

[0113] The second guide groove (1371a) includes a second straight groove (1371aa) extending along the longitudinal direction of the wire, and a second inclined groove (1371ab) inclined with respect to the longitudinal direction of the wire. When the second protruding pin (1353a) passes through the second straight groove (1371aa), the second tool member (137) slides linearly together with the slide member (133). When the second protruding pin (1353a) passes through the second inclined groove (1371ab), the second tool member (137) can rotate relative to the slide member (133).

[0114] The above second guide groove (1371a) initially extends in a straight line and then has a curved shape in the latter half, so that the second tool member (137) slides forward in the early stage when the second slider (1332) moves in a straight line, and rotates as it goes towards the latter half.

[0115] 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, and 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 wire that is continuously supplied.

[0116] Afterwards, the second tool member (137) rotates and cuts a portion of the wire, and then rotates further to grip the tip of the cut portion of the wire in cooperation with the first tool member (136).

[0117] The above second gripping part (1372) is provided at the tip of the second tool member (137). It cooperates with the first-second gripping part (1363) to grip the peripheral portion of the cut wire (W). 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). One tip of the wire (W) is bent by the bending part (140) and then gripped by the first-first gripping part (1362) and the fixed tool (1332b). The other end of the wire (W) produced 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 portion (1363) and the second gripping portion (1372).

[0118] 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 crossed 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.

[0119] 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 are connected to a separate motor. The power generated by the motor rotates the gears, thereby bending the bending portion (140) in a straight or curved manner.

[0120] 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).

[0121] The reinforcing bar assembly fastening device (100) for tunnel construction according to the present invention has the following effects.

[0122] 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). That is, as illustrated in FIG. 3, 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. 6.

[0123] Thereafter, the driving unit (132) operates to 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). As the second slide moves, the first tool member (136) rotates by the first guide groove (1361a). The first tool member (136) rotates so that the 1-1 gripping portion (1362) engages with the fixed tool (1332b). Thereafter, when the tip of the wire (W) engages and is gripped between the 1-1 gripping portion (1362) and the fixed tool (1332b), the feed motor (121) is rotated in the opposite direction so that the wire (W) can be tightly wrapped around the intersection of the cross-reinforcing bars (S).

[0124] Thereafter, the driving unit (132) operates to further 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). Accordingly, the first tool member (136) and the second tool member (137) rotate in a direction facing each other, and in this process, as illustrated in FIG. 8, 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 as shown in FIG. 9, the wire (W) member is gripped at the other end (around the cut portion of the wire (W)) by the first and second gripping members (1363) and the second gripping member (1372).

[0125] 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 (1381), causing the first slider (1331) and the second slider (1332) to rotate, and accordingly, the wire (W) is twisted and twisted.

[0126] Finally, the appearance of the wire (W) tied around the cross reinforcing bar (S) is illustrated in Fig. 10.

[0127] 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 of the wire (W) can be performed by a single gripping and cutting unit (130), so that the overall structure is simplified and has the advantage of being able to be simplified.

[0128] 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 assembly tying device for tunnel construction to tie wires to crossed reinforcing bars, It includes a wire transfer unit that moves a wire in one direction to tie crossed reinforcing bars, a gripping and cutting unit that is connected to the wire transfer unit and can grip and cut the wire that moves in one direction, and a bending unit that rolls up the wire that has passed through the gripping and cutting unit into a round shape so that the tip of the wire can be gripped by the gripping and cutting unit. The above-mentioned phage and cutting part, A base member having an upper support piece extending along the length of the wire and having a first protruding pin protruding downward, and a lower support piece spaced apart from the lower side of the upper support piece and having a second protruding pin protruding upward; A slide member positioned on the outside of the base member so as to be able to slide relative to the base member; and A reinforcing bar assembly fastening device for tunnel construction, characterized in that it comprises first and second guide grooves arranged between the upper and lower support pieces and guiding a movement path by inserting first and second protruding pins of the base member, respectively, and first and second tool members that move along the path of the first and second guide grooves by the sliding action of the slide member and engage with each other to hold or cut the wire accordingly.

2. In paragraph 1, The first tool member includes a first main body having a flat shape and having a first guide groove formed on the upper surface and rotatably connected to the slide member. A reinforcing bar assembly fastening device for tunnel construction, characterized in that the second tool member has a flat plate shape, has a second guide groove formed on the lower surface, and includes a second body rotatably connected to the slide member.

3. In paragraph 2, The first guide groove includes a first inclined groove inclined with respect to the longitudinal direction of the wire and a first straight groove extending along the longitudinal direction of the wire, When the first protruding pin passes through the first inclined groove, the first tool member rotates relative to the slide member, A reinforcing bar assembly fastening device for tunnel construction, characterized in that the first tool member slides linearly together with the slide member when the first protruding pin passes through the first straight groove.

4. In paragraph 3, The second guide groove includes a second straight groove extending along the longitudinal direction of the wire and a second inclined groove inclined with respect to the longitudinal direction of the wire. When the second protruding pin passes through the second straight groove, the second tool member slides linearly together with the slide member, A reinforcing bar assembly fastening device for tunnel construction, characterized in that when the second protruding pin passes through the second inclined groove, the second tool member rotates relative to the slide member.

5. In paragraph 4, A fixed tool is fixedly installed on one side of the above slider, The above first tool member is, A reinforcing bar assembly fastening device for tunnel construction, characterized in that it includes a first-first gripping portion that protrudes upward from one side of the first main body and can engage with a fixed tool of a second slider while rotating.

6. In paragraph 5, The above first tool member is, Having a first-second grip portion protruding downward from the other side of the first main body, The above second tool member is, A reinforcing bar assembly fastening device for tunnel construction, characterized in that a second gripping portion is formed to have a hook shape at the edge of the second main body and is capable of engaging with the first and second gripping portions.

7. In paragraph 6, A sharp first cutting blade is formed on one edge of the first main body, A reinforcing bar assembly fastening device for tunnel construction, characterized in that a second cutting blade for cutting wire in cooperation with the first cutting blade is formed on the side of the second main body facing the first cutting blade.

8. In paragraph 7, A reinforcing bar assembly fastening device for tunnel construction, characterized in that the first tool member and the second tool member, after the first cutting blade and the second cutting blade cooperate to cut the wire, the first-second gripping portion and the second gripping portion cooperate to grip the peripheral portion of the cut wire.

9. In paragraph 8, A reinforcing bar assembly fastening device for tunnel construction, characterized in that the first guide groove of the first tool member is connected from the first straight groove to the first curved groove, the first tool member moves linearly to cut the wire in cooperation with the second tool member, and moves rotationally to grip the cut wire in cooperation with the second tool member.

10. In paragraph 9, A reinforcing bar assembly fastening device for tunnel construction, characterized in that the second guide groove of the second tool member is connected from the second curved groove to the second straight groove, and after the free end of the wire is gripped by the fixed tool, the free end of the wire is moved linearly while maintaining the gripped state of the free end of the wire, and then the free end of the wire is gripped and engaged with the first tool member.

11. In paragraph 1, The above-mentioned phage and cutting part, A reinforcing bar assembly fastening device for tunnel construction, characterized in that it further comprises a screw member having a wire penetration portion formed in the center so that a wire moving by a wire conveying portion can pass through it and a screw thread formed on the outer surface, and a driving unit that rotates the screw member.

12. In paragraph 11, The above slide member has a female screw portion formed on the inner surface thereof that engages with the screw member and moves linearly according to the rotation of the screw member. A reinforcing bar assembly fastening device for tunnel construction, characterized in that the base member is relatively rotatable and connected to the tip of the screw member.

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