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 for assembling a reinforcing bar for tunnel construction comprising a wire transfer unit, a gripping and cutting unit, and a bending unit, wherein the gripping and cutting unit comprises: a screw member having a screw thread formed on the outer circumferential surface thereof; a driving unit for rotating the screw member; a first slider which is engaged with the screw thread of the screw member and is slidable along the longitudinal direction of the screw member by the rotation of the screw member; and an operation unit which is operatively connected to the first slider and can grip and cut a wire.

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 perform a fastening operation 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 rebars (S) and twists the wire (W) wrapped around the rebars to tie the two or more rebars (S) with the wire (W). The tying device (10) comprises a wire feeding mechanism that sends out a wire wound on a reel and winds it around the rebars, a gripping mechanism that grips the wire wound around the rebars, and a wire twisting mechanism that rotates and twists the wire by driving the gripping mechanism.

[0004] The binding device (10) sequentially operates a wire transport mechanism, a gripping mechanism, and a wire twisting mechanism by trigger operation 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] 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, thereby tightly wrapping the wire around the rebar. The wire is then transported by 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] A wire transfer unit that moves wires in one direction to tie crossed reinforcing bars;

[0010] A gripping and cutting unit connected to the above wire transport unit and capable of gripping and cutting the wire; and

[0011] A bending portion for winding the wire passing through the above-mentioned phage and cutting portion into a round shape so that the tip of the wire can be gripped by the phage and cutting portion;

[0012] The above-mentioned phage and cutting part,

[0013] 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;

[0014] A driving unit that rotates the above screw member;

[0015] A first slider that engages with the screw thread of the screw member and is slidable along the length of the screw member by rotation of the screw member; and

[0016] It includes an operating unit operatively connected to the first slider and capable of gripping and cutting the wire.

[0017] In the above-mentioned reinforcing bar assembly fastening device for tunnel construction,

[0018] A cylindrical second slider that operates together with the first slider is provided on the outer surface of the first slider, and a protrusion may be formed on the outer surface of the second slider.

[0019] In the above-mentioned reinforcing bar assembly fastening device for tunnel construction,

[0020] The above-mentioned phage and cutting part are arranged in a first housing having a receiving space formed therein, and a catch portion is formed in the first housing so as to protrude toward the second slider and extend a predetermined length along the longitudinal direction of the second slider, and when the protruding part comes into contact with the catch portion, the second slider can slide without rotating, and when it is free from the catch portion, the second slider can slide while rotating.

[0021] In the above-mentioned reinforcing bar assembly fastening device for tunnel construction,

[0022] The above operating part is,

[0023] It is composed of a first tool member and a second tool member operably connected to a second slider, and the first tool member and the second tool member cooperate to grip and cut a wire.

[0024] In the above-mentioned reinforcing bar assembly fastening device for tunnel construction,

[0025] The above first tool member is rotatably connected to the second slider by a first pin,

[0026] The above second tool member can be rotatably connected to the second slider by a second pin.

[0027] In the above-mentioned reinforcing bar assembly fastening device for tunnel construction,

[0028] In the above first tool member, a first guide groove is formed,

[0029] In the above second tool member, a second guide groove is formed.

[0030] The above operating part further includes a base member provided with an upper support member and a lower support member spaced apart from each other, and installed to be relatively rotatable at the tip of the screw member,

[0031] In the upper support piece, a first protruding pin is fixed to the first guide groove of the first tool member to guide the movement path of the first tool member.

[0032] A second protruding pin that is fitted into the second guide groove of the second tool member to guide the movement path of the second tool member can be fixed to the above lower support piece.

[0033] In the above-mentioned reinforcing bar assembly fastening device for tunnel construction,

[0034] The first tool member includes a plate-shaped first body and a first-first gripping portion protruding from the upper surface of the first body, and a fixed tool that grips the tip of the wire in cooperation with the first-first gripping portion is provided on the second slider.

[0035] The above first guide home may have a path through which the first-first gripping portion of the first tool member can grip the wire tip in cooperation with the fixed tool.

[0036] In the above-mentioned reinforcing bar assembly fastening device for tunnel construction,

[0037] A first cutting blade is formed on one side of the first main body,

[0038] A second cutting blade is formed on the second tool member to cut the wire passing through the screw member in cooperation with the first cutting blade.

[0039] The above two guide grooves may have a path for moving the second tool portion so that the second cutting blade can cooperate with the first cutting blade to cut the wire.

[0040] In the above-mentioned reinforcing bar assembly fastening device for tunnel construction,

[0041] A first-second gripping portion protruding from the back surface of the first main body and a second gripping portion arranged at the tip of the second tool member and cooperating with the first-second gripping portion to grip the periphery of the cut wire are formed.

[0042] The above second guide groove may have a path along which the wire can be gripped after the second tool section cuts the wire.

[0043] In the above-mentioned reinforcing bar assembly fastening device for tunnel construction,

[0044] The above bending section can wrap the wire roundly so that the wire is placed between the first-first grip section and the fixing tool.

[0045] In the above-mentioned reinforcing bar assembly fastening device for tunnel construction,

[0046] After the tip of the wire and the peripheral portion of the cut wire are broken, the protruding piece is freed from the catch and the second slider rotates and moves forward, thereby allowing it to be twisted around the cross-bar.

[0047] The present invention relates to a reinforcing bar assembly fastening device for tunnel construction, which is simple in structure and can simplify the overall reinforcing bar assembly time by allowing all operations of gripping, cutting, and twisting of a wire to be performed at once by simply rotating a screw member.

[0048] Figure 1 is a drawing showing an example of a conventional reinforcing bar assembly fastening device for tunnel construction.

[0049] Figure 2 is a perspective view of a reinforcing bar assembly fastening device for tunnel construction according to one embodiment of the present invention.

[0050] Figure 3 is a plan view of Figure 2.

[0051] Figure 4 is a side cross-sectional view of Figure 2.

[0052] Fig. 5 is a perspective view showing the bending portion in Fig. 2.

[0053] Figure 6 is a perspective view of Figure 5 viewed from the rear.

[0054] Fig. 7 is an enlarged side view of the bend in Fig. 5.

[0055] Figures 8 to 10 are perspective views showing the operation of a reinforcing bar assembly fastening device for tunnel construction of Figure 2.

[0056] Fig. 11 is a drawing showing a cross reinforcing bar with wires tied by the operation of Figs. 8 to 10.

[0057] Figures 12 to 14 are exploded perspective views of the phage and cutting portions of Figure 2.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] In the present disclosure, “horizontal direction” means the direction in which a wire passes through the interior of a screw member, and “vertical direction” means the direction orthogonal to the horizontal direction.

[0066] 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.

[0067] The present invention relates to a reinforcing bar assembly tying device for tunnel construction, which is used in reinforcing bar structures such as tunnels and buildings, and is for a wire 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. A wire is provided to secure the intersecting reinforcing bars such as main reinforcing bars and transverse reinforcing bars. The wire is inserted into the intersection of the reinforcing bars and twisted to tie the intersecting reinforcing bars. The present invention enables automatic tying using such a tying wire.

[0068] 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).

[0069] The above-mentioned coupling part (110) is positioned on the upper part of the second housing (1323) and is fixedly installed on the arm of an automated device such as a robot. This coupling part (110) 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 configured to be detachably installed on the arm of the robot.

[0070] After the connecting part (110) is connected to the arm of the robot, the reinforcing bar (S) 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).

[0071] The above wire transfer unit (120) is arranged at the lower side of the second housing (1323). The wire transfer unit (120) moves a wire (W) in one direction to bind the crossed reinforcing bars (S). The wire transfer unit (120) is arranged at the lower side of the second housing (1323) and is composed of a plurality of transfer motors (121) and a plurality of gears.

[0072] A plurality of transfer motors (121) are arranged on both sides of the center of the second housing (1323), and gears are arranged on the drive shafts of each transfer motor (121). The gears are arranged to face each other between the transfer motors (121) facing each other. A wire (W) passes between the facing gears, and at this time, the wire (W) is configured to move forward by the rotational force of a pair of gears. Meanwhile, if necessary, the transfer motors can also rotate in the opposite direction to retract the wire (W).

[0073] 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).

[0074] The above wire gripping and cutting unit (130) is connected to the wire transport unit (120) and can grip and cut the wire (W). 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.

[0075] This wire gripping and cutting part (130) is composed of a screw member (131), a driving member (132), a first slider (133), a second slider (134), a base member (135), a first tool member (136), and a second tool member (137).

[0076] The above screw member (131) has a wire penetration portion formed in the center so that a wire (W) moving by a wire conveying member (120) passes through it. Screw threads are formed on the outer circumferential surface of the screw member (131). The screw member (131) rotates by receiving rotational force from the driving member (132) and is engaged with the driving member (132) by the screw threads. 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). Screw threads are formed to extend in the longitudinal direction between one side and the other side of the screw member (131).

[0077] The above-mentioned driven gear (1311) is coupled to mesh with the driving gear (1322) of the driving unit (132). The driven gear (1311) receives power from the driving unit (132). A support member (1312) is provided around the driven gear (1311). The support member (1312) is for installing the screw member (131) in the first housing (138) that surrounds the screw member (131). The support member (1312) is fixed to the first housing (138) so as to axially support the screw member (131).

[0078] The above driving unit (132) may be composed of a driving motor (1321) installed in a first housing (138) and a driving gear (1322) connected to the 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) so that the screw member (131) can rotate.

[0079] The first slider (133) is arranged in the first housing (138) together with the screw member (131). The first slider (133) is engaged with the screw threads of the screw member (131). The screw member (131) can slide along the longitudinal direction of the screw member (131) by rotation of the screw member. The first slider (133) is formed in a cylindrical shape with an empty interior. Screw threads are formed on the inner peripheral surface of the first slider (133). The screw threads of the first slider (133) are engaged with the screw threads formed on the outer peripheral surface of the screw member (131). The first slider (133) is configured to be able to move forward or backward according to the rotation of the screw member (131).

[0080] The first slider (133) can slide while rotating by the rotation of the screw member (131), and can also slide without rotating as needed.

[0081] The second slider (134) is configured to operate together with the first slider (133). The second slider (134) is formed in a tubular shape larger than the first slider (133) so as to be able to surround the first slider (133). The second slider (134) is configured to be fixedly connected to the first slider (133) by a fixture so that when the first slider (133) moves forward, it moves forward together with the first slider (133), and when the first slider (133) moves backward, it moves backward together with the first slider (133).

[0082] A pair of protrusions (1341) are formed on the outer surface of the second slider (134) so ​​as to face each other. The protrusions (1341) each protrude toward the first housing (138) that surrounds the second slider (134). The protrusions (1341) are configured to extend a predetermined length forward from the rear end of the first slider (133). The protrusions (1341) catch or detach from the catch (1381) of the first housing (138) so as to cause the second slider (134) to slide without rotation or to slide while rotation.

[0083] Specifically, the second slider (134) is placed in a first housing (138) having an accommodation space formed therein. A catch (1381) is formed in the first housing (138) so as to protrude toward the second slider (134) and extend a predetermined length along the longitudinal direction of the second slider (134). When the protruding piece (1341) comes into contact with the catch (1381), the second slider (134) slides without rotation. In addition, when the protruding piece (1341) is free from the catch (1381), the second slider (134) can slide while rotating.

[0084] After one end of the wire (W) is broken and a part of the wire (W) is cut, and the other end of the wire (W) is broken, the second slider (134) must rotate for twisting. At this time, the protruding piece (1341) passes through the catch (1381) to enable the second slider (134) to rotate.

[0085] A fixed tool (1342) 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 (134). Specifically, the fixed tool (1342) is configured to be able to engage with the first-first gripping portion, thereby being configured to grip the tip of the wire (W).

[0086] 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).

[0087] The above connecting portion (1351) is connected to the tip of the screw member (131) so as to be able to rotate relative to it. Accordingly, even if the screw member (131) rotates, the base member (135) is configured to maintain its position without rotating.

[0088] The upper support piece (1352) is configured to be fitted with a first protruding pin (1352a). 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). Specifically, 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).

[0089] The above lower support piece (1353) is configured to be fitted with a second protruding pin (1353a). 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). 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).

[0090] The first tool member (136) is connected to the second slider (134). The first tool member (136) is configured to operate by the movement of the second slider (134). It performs a cutting operation of a paper or wire (W) in cooperation with a fixed tool (1342) or a second tool member (137).

[0091] 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).

[0092] The first main body (1361) is formed in a roughly square plate shape and is protruded from the tip of the second slider (134). The first main body (1361) is rotatably coupled to the tip of the second slider (134) 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). At this time, 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).

[0093] At this time, the first guide groove (1361a) is initially formed with a curved section to rotate the first tool member (136). As the first tool member (136) rotates, the 1-1 gripping part (1362) rotates to approach the fixed tool (1342). Specifically, in a state where the tip of the wire (W) guided by the bending part (140) is arranged between the 1-1 gripping part (1362) and the fixed tool (1342) (see FIG. 7), when the first tool member (136) rotates by the first guide groove (1361a), the 1-1 gripping part (1362) approaches the fixed tool (1342) and is configured to grip the tip of the wire (W).

[0094] In addition, after the tip of the wire (W) is cut, the first tool member (136) cooperates with the second tool member (137) to cut the wire (W). To this end, the first guide groove (1361a) guides the rotation of the first tool member (136) so that it rotates toward the second tool member (137). Specifically, the direction of travel of the first tool member (136) is guided by the first guide groove (1361a).

[0095] 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 fixing tool (1342) 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 (1342) can be inserted therein. By inserting the first fixing tool (1342) into the concave groove, the wire (W) inserted therebetween can be gripped.

[0096] The above 1-2 gripping portion (1363) protrudes from the back surface of the 1st main body (1361). The 1-2 gripping portion (1363) cooperates with the 2nd gripping portion (1372) of the 2nd tool member (137) to grip the wire (W). This 1-2 gripping portion (1363) passes through the cut shaft member and grips 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) and grips the wire (W) located therebetween. This 1-2 gripping portion (1363) has an approximately “ㄱ” cross-sectional shape when viewed from above.

[0097] The first cutting blade (1364) is formed on one side of the first main body (1361) opposite to the first-second gripping portion (1363) and has a sharp blade shape. 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). The 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).

[0098] 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).

[0099] The second main body (1371) is formed in a roughly square shape and has a second pin (1371b) inserted into one side thereof to be rotatably coupled to the second slider (134). In addition, a second guide groove (1371a) is formed on the back surface of the second main body (1371). The second protruding pin (1353a) fixed to the lower support piece (1353) is configured to be fitted into the second guide groove (1371a).

[0100] The above second guide groove (1371a) initially extends linearly 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 (134) moves linearly, and then rotates as it moves later. That is, as shown in FIG. 8, it initially moves linearly without rotation together with the second slider (134), but as shown in FIG. 9 in the latter half, it rotates toward the first tool member (136) and grips the wire (W).

[0101] The second gripping portion (1372) is provided at the tip of the second tool member (137) and cooperates with the first-second gripping portion (1363) to grip the peripheral portion of the cut wire (W). This second gripping portion (1372) is formed in a hook shape that is concave inward. The first-second gripping portion (1363) engages with the concave portion of the second gripping portion (1372) to grip the tip of the wire (W). One tip of the wire (W) is bent by the bending portion (140) and then gripped by the first-first gripping portion (1362) and the fixed tool (1342). Thereafter, the other tip of the wire (W) is formed after being cut by the first cutting blade (1364) and the second cutting blade (1373). The other end of the wire (W) is gripped by the first and second gripping portions (1363) and the second gripping portion (1372).

[0102] The second cutting blade (1373) is formed on one edge of the second gripping portion (1372) and has a sharp blade shape. The second cutting blade (1373) cooperates with the first cutting blade (1364) to cut the wire (W) passing through the screw member (131). Accordingly, the wire (W) wrapping the crossed reinforcing bars (S) has a predetermined length. When the second tool member (137) rotates close to the first tool member (136), the wire (W) located between the first cutting blade (1364) and the second cutting blade (1373) is cut.

[0103] The above-mentioned bending portion (140) is configured to roll up the wire (W) that has passed through the above-mentioned gripping and cutting portion (130) into a round shape 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). This 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).

[0104] The above-mentioned bending mechanism is composed of a plurality of gears and chains, and the chains are connected to a separate motor. The power generated by the motor rotates the gears, thereby bending the bending section (140) in a straight or curved manner.

[0105] 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 (1342).

[0106] The reinforcing bar assembly fastening device (100) for tunnel construction according to the present invention has the following effects.

[0107] 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 (1342), as illustrated in FIG. 6.

[0108] Thereafter, the driving unit (132) operates to rotate the screw member (131). Accordingly, the first slider (133) slides along the screw member (131). Accordingly, the second slider (134) also moves forward together with the first slider (133). As the second slider (134) moves, the first tool member (136) rotates by the first guide groove (1361a). When the first tool member (136) rotates, the first-first gripping unit (1362) engages with the fixed tool (1342) and grips the tip of the wire (W). After the tip of the wire (W) is engaged and gripped, the feed motor (121) rotates in the opposite direction. Accordingly, the wire (W) can be tightly wrapped around the intersection of the cross-reinforcing bars (S).

[0109] Thereafter, the driving unit (132) operates to further rotate the screw member (131). Accordingly, the first slider (133) slides along the screw member (131). Accordingly, the second slider (134) also moves forward together with the first slider (133). The first tool member (136) and the second tool member (137) rotate in directions facing each other. 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 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).

[0110] In this way, after one end and the other end of the wire (W) are gripped by the first tool member (136) and the second tool member (137), the screw member (131) is additionally rotated. Accordingly, the first slider (133) and the second slider (134) rotate as the protruding piece (1341) passes the catch (1381). As a result, the wire (W) is twisted and twisted.

[0111] Finally, the appearance of the wire (W) tied around the cross reinforcing bar (S) is illustrated in Fig. 10.

[0112] 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.

[0113] 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, A wire transport section that moves wires in one direction to tie crossed reinforcing bars; A gripping and cutting unit connected to the above wire transport unit and capable of gripping and cutting the wire; and A bending portion for rolling up the wire passing through the above-mentioned phage and cutting portion into a round shape so that the tip of the wire can be gripped by the phage and cutting portion; including, The above-mentioned phage and cutting part, 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 having screw threads formed on the outer surface; A driving unit that rotates the above screw member; A first slider that engages with the screw threads of the screw member and is capable of sliding along the length of the screw member by rotation of the screw member; and A reinforcing bar assembly tying device for tunnel construction, characterized in that it includes an operating unit operatively connected to the first slider and capable of gripping and cutting the wire.

2. In paragraph 1, A reinforcing bar assembly fastening device for tunnel construction, characterized in that a cylindrical second slider that operates together with the first slider is provided on the outer surface of the first slider, and a protrusion is formed on the outer surface of the second slider.

3. In paragraph 2, A reinforcing bar assembly fastening device for tunnel construction, characterized in that the above-mentioned phage and cutting portion are arranged in a first housing having an accommodation space formed therein, and a catch portion is formed in the first housing so as to protrude toward the second slider and extend a predetermined length along the longitudinal direction of the second slider, and when the protruding portion comes into contact with the catch portion, the second slider slides without rotating, and when it is free from the catch portion, the second slider slides while rotating.

4. In paragraph 3, The above operating part, A reinforcing bar assembly fastening device for tunnel construction, comprising a first tool member and a second tool member operably connected to a second slider, wherein the first tool member and the second tool member cooperate to grip and cut the wire.

5. In paragraph 4, The above first tool member is rotatably connected to the second slider by the first pin, A reinforcing bar assembly fastening device for tunnel construction, characterized in that the second tool member is rotatably connected to the second slider by a second pin.

6. In paragraph 5, In the above first tool member, a first guide groove is formed, In the above second tool member, a second guide groove is formed. The above operating part further includes a base member provided with an upper support member and a lower support member spaced apart from each other and installed so as to be relatively rotatable at the tip of the screw member, In the upper support member, a first protruding pin is fixed to fit into the first guide groove of the first tool member and guide the movement path of the first tool member. A reinforcing bar assembly fastening device for tunnel construction, characterized in that a second protruding pin is fixed to the lower support piece to guide the movement path of the second tool member by being fitted into the second guide groove of the second tool member.

7. In paragraph 4, The above first tool member includes a plate-shaped first body and a first-first gripping portion protruding from the upper surface of the first body, and a fixed tool is provided on the second slider to grip the tip of the wire in cooperation with the first-first gripping portion. A reinforcing bar assembly fastening device for tunnel construction, characterized in that the first guide groove has a path in which the first-first gripping portion of the first tool member can grip the wire tip in cooperation with the fixed tool.

8. In paragraph 7, A first cutting blade is formed on one side of the first main body, The second tool member is formed with a second cutting blade that cooperates with the first cutting blade to cut the wire passing through the screw member. A reinforcing bar assembly fastening device for tunnel construction, characterized in that the above two guide grooves have a path for moving the second tool part so that the second cutting blade can cut the wire in cooperation with the first cutting blade.

9. In paragraph 8, A first-second gripping portion protruding from the back surface of the first main body and a second gripping portion positioned at the tip of the second tool member and cooperating with the first-second gripping portion to grip the peripheral portion of the cut wire are formed. A reinforcing bar assembly fastening device for tunnel construction, characterized in that the second guide groove has a path for gripping the wire after the second tool section cuts the wire.

10. In paragraph 7, A reinforcing bar assembly fastening device for tunnel construction, characterized in that the above bending part wraps the wire round so that the wire is placed between the first-first grip part and the fixing tool.

11. In paragraph 9, A reinforcing bar assembly tying device for tunnel construction, characterized in that after the tip of the wire and the peripheral portion of the cut wire are broken, the protruding piece is released from the hook portion, the second slider rotates and advances, thereby winding around the cross reinforcing bar.

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