JP6696540B2 - Rebar binding machine - Google Patents

Description

  According to the present invention, the wire reel can be detachably mounted, and the wire drawn from the mounted wire reel is fed around the reinforcing bar from the guide portion provided at the tip of the binding machine body and wound around the reinforcing bar in a loop shape. The present invention relates to a reinforcing bar binding machine that twists and then binds reinforcing bars.

  The reinforcing bar binding machine inserts two intersecting reinforcing bars into a curved guide portion provided at the tip of the binding machine body, pulls out a wire from a wire reel mounted on the binding machine body by a wire feeding device, and guides the wire at the guide portion. The wire is wound around the two rebars while being curled and curled, and the wire is wound around the two rebars in a loop. Further, the reinforcing bar binding machine winds the wire around the two reinforcing bars, cuts the original side of the wire by a wire cutting mechanism, and grasps one end of the wire loop with a pair of twisting hooks of a wire twisting device. By rotating the wire, the wire is twisted, and the reinforcing bars are tightly bound and bound (for example, Patent Documents 1 and 2).

Utility model registration No. 2552384 Patent No. 5309947

  When binding the reinforcing bars, the reinforcing bar binding machine inserts the intersection of the two reinforcing bars into the guide part provided at the tip of the binding machine body, winds the wire around the two reinforcing bars, and then forms the wire loop. The original side of the wire is cut, one end of the wire loop is grasped by a pair of twisting hooks of a wire twisting device and rotated to twist the wire, and the reinforcing bars are tightly bound to bind the wire. Perform the operation to pull it away from the rebar of the book. Since this wire loop is wound around the reinforcing bar two to three times and twisted, it is desirable that an appropriate loop shape suitable for binding the reinforcing bar binding machine is maintained even after cutting. However, since the wire is cut immediately after being wound, both ends of the wire loop may be in a free state, and the loop may be loosened so that the proper loop shape may not be maintained. The wire loop is formed by curling the wire in the guide part in a curl shape, but since the wire is made of metal, it has a restoring force, and when the ends are cut and both ends are in a free state, the restoring force curls. There is a case in which an appropriate loop shape cannot be maintained because the outer diameter of the curl diameter is increased by acting in the direction in which the diameter is expanded (outer diameter direction), and only the curl portion of the final winding is loosened. The reinforcing bar binding machine has a high possibility of causing a binding failure when an appropriate wire loop cannot be maintained as described above.

  The rotation speed of the pair of twisting hooks set in the reinforcing bar binding machine is set according to an appropriate curl diameter. It runs out of space and causes a binding problem that binds the reinforcing bars incompletely. Further, since the twisting torque of the pair of twisting hooks set in the reinforcing bar binding machine is set according to a predetermined number of windings, if only the curl portion of the final winding is loosened, the pair of twisting hooks will have a predetermined value. The wire loop having a smaller number of turns (eg, 2 turns) than the number of turns (eg, 3 turns) is twisted, and the wire loop may be cut. Even if it is not twisted, the curled portion of the final winding loosened from the twisted portion jumps out like a whisker, impairing the binding form of the wire, and also has an adverse effect inside the concrete as described later.

  Further, the wire loop may maintain the proper loop shape even if the wire is cut after being wound. In a reinforcing bar binding machine, when a pair of twisting hooks twist and bind one end of a wire loop at a predetermined number of turns (for example, two turns), a twisted portion for two turns is formed in which both ends are evenly wound. A proper binding form is obtained in which both ends cross at the position opposite to the part. However, since both ends of the wire loop are in a free state, if one end of the wire loop is twisted and bound, when a part of the wire on the cut end portion (hereinafter, referred to as a terminal end) of the cut and separated wire is twisted. There is a case where it is swung around due to the fluctuation of, and it is not possible to uniformly wind it in the twisted portion, and a proper binding form cannot be obtained. In addition, the twisting portion, which would normally have two turns, becomes one turn, which leads to the fact that the twisting torque of the pair of twisting hooks causes threading due to insufficient strength. For example, even if it is not twisted, if it is a twisted portion for one turn, it is not possible to obtain the originally intended binding force for the twisted portion for two turns. There was a risk that his rebar would loosen, so he had to redo the binding again.

  The rebar tying machine twists the wire after the wire is cut to bind the rebar, so that the start end and the cut end of the wire wound around the rebar are free while twisting the wire. Is as described above. The starting end portion and the terminating end portion (both end portions) of the wire are located at positions substantially opposite to each other apart from the portion to be twisted by the twisting hook, and may sometimes jump out to the side of the wire loop due to the influence of twisting the wire. In such a case, after twisting the wire, when pulling out the reinforcing bar binding machine to remove the guide part from the reinforcing bar, either or both of the free end of the wire and the end part of the wire are caught in the guide part, etc. It may move back to the twisted portion side. In addition, since the end of the wire sticks out to the twisted part side and separates from the reinforcing bar, not only does it look bad, but when concrete is hit in this state, the end of the wire may protrude from the surface of the concrete. .. When the end of the wire is exposed from the concrete surface of the wire, rainwater penetrates into the interior through the gap between the wire and the concrete, which causes cracking. From this, the reinforcing bar binding machine can maintain the proper loop shape by holding the end even after cutting the wire, and the cut end during binding can be caught in the twisted portion to form the proper binding shape. There has been a demand for a holding device that does not damage the wire and that allows the end of the wire to be smoothly pulled out from the guide portion when the wire is pulled out from the restrained reinforcing bar.

  The present invention has been devised in view of the above problems, and holds the cut end side of a wire cut and cut by a wire cutting mechanism to maintain a proper loop shape of the wire, and further An object of the present invention is to provide a reinforcing bar binding machine in which both ends of the wire can be reliably retained on the back side of the reinforcing bar by being held during the binding of the wire and the both ends of the wire are prevented from jumping out from the bound wire loop.

In order to achieve the above-mentioned object, the reinforcing bar binding machine according to claim 1 of the present application can be detachably mounted with a wire reel, and a wire is pulled out from the mounted wire reel to a guide portion provided at the tip of the binding machine body. The wire is fed by the guide part, and the wire is wound around the rebar arranged inside the guide part and wound around the rebar. Then, the wire is cut by the wire cutting mechanism and the wound part is twisted. In the rebar binding machine for binding the rebar, the wire cutting mechanism cuts the wire by sliding or swinging the fixed blade with the wire through hole formed in the wire feeding direction and the fixed blade. A cutter comprising a movable blade to be provided, the guide part is provided with a holding device for holding the cut end side of the wire cut and cut in conjunction with the cutting operation of the movable blade, and the holding device is the a pressing protrusion formed at the tip of the pressing member formed on one side of the movable blade, the pressing圧突force, pushing the cut end portion of the wire is disconnected by cutting the side surface of the wire guide passage characterized in that it.

In order to achieve the above object, the reinforcing bar binding machine according to claim 2 of the present application is configured such that, in the holding device, the pressing projection presses the cut end side of the cut and separated wire to the side surface side of the wire guide passage. It is characterized by holding.
In order to achieve the above object, the reinforcing bar binding machine according to claim 3 of the present application is characterized in that the pressing projection is a substantially triangular projection.

  The reinforcing bar binding machine according to the present invention cuts the wire by the wire cutting mechanism after sending the wire around the reinforcing bar and winding the wire around the reinforcing bar to form a wire loop, but it was cut and cut by the holding device. Since the cutting end side of the wire is held, even if the cutting end of the wire loop is cut, it does not become free and the wire loop does not loosen, and the proper loop shape of the wire loop is maintained. There is an effect that can be. Further, since the proper annular shape of the wire loop is maintained before binding, there is an effect that it is difficult to cause binding failure. Further, even during the binding of the wire loop, since the cutting end side of the wire is held, a part of the cut cutting end side wire is prevented from being caught in the twisted portion, There is an effect that a proper binding form can be obtained. As described above, the reinforcing bar binding machine according to the present invention holds the cut end side of the wire cut and cut by the wire cutting mechanism to maintain the proper loop shape of the wire, and further, during the binding of the wire, By holding the cut end side of the wire, both ends of the wire can be retained on the back side of the reinforcing bar, and there is an effect that it is possible to prevent both ends of the wire from jumping out from the bound wire loop.

1 is a side view showing an embodiment of a reinforcing bar binding machine according to the present invention. It is the perspective view which looked at the reinforcing bar binding machine of FIG. 1 from diagonally downward. It is a side surface explanatory view explaining one wire cutting mechanism of a reinforcing bar binding machine. It is a side surface explanatory view explaining the other wire cutting mechanism of a reinforcing bar binding machine. It is a side view which shows the 1st Example of the internal structure of the guide part of a reinforcing bar binding machine. It is a side view which shows the 2nd Example of the internal structure of the guide part of a reinforcing bar binding machine. It is a side view which shows the 3rd Example of an internal structure of the guide part of a reinforcing bar binding machine. It is a side view which shows the 4th Example of the internal structure of the guide part of a reinforcing bar binding machine. It is a side view which shows the 5th Example of an internal structure of the guide part of a reinforcing bar binding machine. It is a side view which shows the 6th Example of the internal structure of the guide part of a reinforcing bar binding machine. It is a side view which shows the 7th Example of an internal structure of the guide part of a reinforcing bar binding machine. It is a side view which shows the 8th Example of an internal structure of the guide part of a reinforcing bar binding machine. It is a side view which shows the 9th Example of the internal structure of the guide part of a reinforcing bar binding machine. It is a side view which shows the 10th, 11th Example of an internal structure of the guide part of a reinforcing bar binding machine. It is a side view which shows the 12th Example of an internal structure of the guide part of a reinforcing bar binding machine.

  Hereinafter, the reinforcing bar binding machine will be described in detail. As shown in FIG. 1, the reinforcing bar binding machine 1 includes a binding machine body 2 and a guide portion 6 attached to the tip of the binding machine body 2. The binding machine main body 2 operates a storage chamber 3 for storing a wire reel, a wire feeding device (not shown) for pulling out a wire of the wire reel mounted in the storage chamber 3 and feeding the wire to the guide portion 6, and a wire feeding device. A trigger 4 is provided. When the trigger 4 is operated, the wire feeding device drives an electric motor (not shown) to feed the wire 5 of the wire reel forward.

  The guide portion 6 is provided with a gently curved guide frame 13. As shown in FIG. 3, the guide frame 13 guides the wire 5 drawn from the wire reel by the wire feeding device and feeds it, and the wire feeding device feeds a predetermined amount of the wire 5 to rebar. A wire cutting mechanism 31 for cutting after being wound around 7, and a curl guide 12 for bending the wire 5 sent through the wire cutting mechanism 31 are sequentially arranged and fixed. The curl guide 12 is fixed to the distal end side of the guide frame 13, and has a guide groove 20 that cooperates with the guide frame 13 to guide the wire 5 in a curling direction.

  As shown in FIG. 3, the wire cutting mechanism 31 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. The wire cutting mechanism 31 includes a fixed blade 32 fixed to the guide frame 13, a movable blade 33 that slides on the fixed blade 32 to cut the wire 5, and a drive lever 16 that moves the movable blade 33 via a link mechanism 37. It is a slide cutter of a sliding type cutting mechanism composed of and.

  A wire through hole 32 a is formed through the fixed blade 32 in the feeding direction of the wire 5. One end of the wire through hole 32 a opens toward the tip 8 b of the guide tube 8 and the other end opens toward the curl guide 12. The opening on one end side of the wire through hole 32a is a wire inlet 32c, and the opening on the other end side of the wire through hole 32a is a wire outlet 32d.

  The wire cutting mechanism 31 moves the movable blade 33 downward (from the outer side to the inner side of the curve of the wire) via the link mechanism 37 by the drive lever 16, so that one surface 33 a of the movable blade 33 is the wire of the fixed blade 32. It slides downward along the surface 32e of the through hole 32a on the wire outlet 32d side, and the lower edge of one surface 33a of the movable blade 33 cuts the wire 5 penetrating the wire through hole 32a. ..

  The wire cutting mechanism of the reinforcing bar binding machine is also used in the rotary cutter of the rotary cutting mechanism in addition to the slide cutter of the sliding cutting mechanism described above. As shown in FIG. 4, the wire cutting mechanism 51 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. The wire cutting mechanism 51 is rotatably provided with a circular shaft-shaped movable blade 52, a fixed blade 53 fixed to the guide frame 13 to rotatably accommodate the circular shaft-shaped movable blade 52, and The rotary cutter is composed of a drive lever 16 for rotating the movable blade 52.

  A wire through hole 52a is formed through the movable blade 52 having a circular shaft shape in the feeding direction of the wire 5. One end of the wire through hole 52 a opens toward the tip 8 b of the guide tube 8 and the other end opens toward the curl guide 12. The opening on one end side of the wire through hole 52a is a wire inlet 52b, and the opening on the other end side of the wire through hole 52a is a wire outlet 52c. Further, the fixed blade 53 is formed with a wire insertion hole 53a in the feeding direction of the wire 5. One end of the wire insertion hole 53 a opens toward the wire outlet 52 c of the wire through hole 52 a of the movable blade 52, and the other end opens toward the curl guide 12. The opening on one end side of the wire insertion hole 53a of the fixed blade 53 is a wire entry port 53b, and the opening on the other end side of the wire insertion hole 53a is a wire discharge port 53c.

  The wire cutting mechanism 51 rotates the movable blade 52 counterclockwise by the drive lever 16 so that the surface of the movable blade 52 on the wire outlet 52c side is moved upward along the surface of the fixed blade 53 on the wire entrance 53b side. The lower end edge of the wire outlet 52c of the movable blade 52 is slid on to cut the wire 5 penetrating the wire through hole 52a.

  As shown in FIG. 3, one end 8a of the guide tube 8 is open to the storage chamber 3 side, and the other end (tip) 8b is open to the wire cutting mechanism 31 (or 51) side. The opening of the other end 8b of the guide tube 8 is narrowed so that the wire 5 can be led out from a predetermined position. The curl guide 12 is curved in an arc shape, curls the wire 5 sent from the binding machine body 2 to give a curl, and circulates around the reinforcing bar 7 with the lower guide 9 shown in FIG. It is like this. In addition, next to the curl guide 12, the guide portion 6 picks up the starting end of the wire 5 sent out from the curl guide 12 and circulated and returned in a loop shape, and guides it again for the next circling. A curl pick-up guide is formed.

  The binding machine main body 2 is provided with a wire twisting device that twists the wire 5 wound in a loop around the reinforcing bar to bind the reinforcing bar. The wire twisting device winds a sleeve around a reinforcing bar in a loop shape by moving forward a sleeve that is pivotally attached to a pair of hooks provided in the P portion of FIG. 1 by an electric motor to close the hooks. After grasping the turned wire 5, the hook is rotated together with the sleeve to twist the wire to bind the reinforcing bars, and then the hook is opened and the sleeve is moved backward to disengage from the wire and return to the initial position. It is the one. Then, when the sleeve advances to grasp the wire loop, the drive lever 16 of the wire cutting mechanism 31 or 51 is operated to cut (shear) the wire 5.

  As described above, in the reinforcing bar binding machine 1, the wire reel wound with the reinforcing bar binding wire 5 is mounted in the storage chamber 3 provided in the binding machine body 2, and the trigger 4 is pulled to operate the wire reel. While rotating the wire 5, the wire 5 is fed to the guide portion 6 provided at the tip of the binding machine main body 2, and the curl guide 12 of the guide portion 6 guides the wire 5 to the inside of the guide portion 6 with a curl. The wire 5 is fed around the arranged reinforcing bars 7 and wound around the reinforcing bars 7, and then the original side of the wire 5 is cut and the wound portion is twisted to bind the reinforcing bars 7.

  A first guide pin 23 is provided at the end of the guide tube 8. The first guide pin 23 projects inside the guide tube 8. As a result, the outer surface of the wire 5 that constitutes the outer side of the bend is guided by the first guide pin 23.

  A third guide pin 25 is provided inside the tip of the curl guide 12. The third guide pin 25 is attached so as to project slightly inward from the guide surface of the curl guide 12. Therefore, the bent outer surface of the wire 5 sent out along the guide groove 20 of the curl guide 12 contacts the third guide pin 25 and is sent downward. The first and third guide pins 23 and 25 are preferably made of a material having a high hardness such as a cemented carbide pin (a cemented carbide pin or a ceramic pin).

  As described above, the wire fed from the guide tube 8 comes into contact with the first guide pin 23 arranged on the tip 8b side of the guide tube 8 and passes through the wire cutting mechanism 31 or 51. The curl guide 12 is fed along the inner side surface thereof, hits the third guide pin 25, and is strongly bent. Thus, the wire 5 contacts the first and third guide pins 23 and 25 having high hardness.

  A first embodiment of the guide portion 6 will be described. As shown in FIG. 5, the wire cutting mechanism 31 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. The wire cutting mechanism 31 includes a fixed blade 32 fixed to the guide frame 13, a movable blade 33 that slides on the fixed blade 32 to cut the wire, and a drive lever 16 that moves the movable blade 33. Is.

  A wire through hole 32 a is formed through the fixed blade 32 in the feeding direction of the wire 5. One end of the wire through hole 32 a opens toward the tip 8 b of the guide tube 8 and the other end opens toward the curl guide 12. The opening on one end side of the wire through hole 32a is a wire inlet 32c, and the opening on the other end side of the wire through hole 32a is a wire outlet 32d.

  The wire cutting mechanism 31 moves the movable blade 33 upward (from the inside of the curve of the wire to the outside) by the drive lever 16, so that one surface 33 a of the movable blade 33 is the wire outlet of the wire through hole 32 a of the fixed blade 32. The upper edge of one surface 33a of the movable blade 33 slides upward along the surface 32e on the 32d side to cut the wire 5 penetrating the wire through hole 32a.

  The movable blade 33 pushes one side 5c of the cut end portion (hereinafter, referred to as a terminal end) 5b of the wire 5 that has been cut and separated in the cutting direction (upward). A substantially triangular bent protrusion 34 is formed on the other surface 33b of the movable blade 33. The bending protrusion 34 includes a vertical surface 34a formed by extending the other surface 33b, and an inclined surface 34b that is inclined downward from the tip of the vertical surface 34a toward the fixed blade 32 side. The bending protrusion 34 is formed on the upper end of the movable blade 33 and constitutes a bending portion of the holding device that bends and holds one side 5c of the cut wire 5 on the terminal end 5b side. The one side 5c on the terminal end 5b side of the wire 5 is a position where the tip of the bent protrusion 34 of the movable blade 33 comes into contact.

  In the reinforcing bar binding machine 1 having the above-described configuration, when the wire 5 is wound around the reinforcing bar 7 by being wound by the guide portion 6 and the wire cutting mechanism 31 operates and the movable blade 33 moves upward, Before cutting, the tip of the bent protrusion 34 engages with the vicinity of the terminal end 5b of the wire 5 and pushes up the wire 5 to bend it, and cuts the wire 5 at the upper edge of the one surface 33a.

  The movable blade 33 stops at the cut position after cutting. One end 5c of the wire 5 on the terminal end 5b side is bent by the tip of the bending projection 34 and is caught by the tip of the bending projection 34, and the end 5b of the wire 5 to the one side 5c of the terminal end 5b is bent. It is held in a state of being engaged with the inclined surface 34b. Since the starting end 5a of the wire 5 is caught and pressed by a portion including the terminal end 5b of the wire 5 held by the guide portion 6, it cannot move freely. In this way, both ends 5a and 5b of the wire 5 can be kept on the back side of the reinforcing bar even if the wire is twisted by the wire twisting device while the both ends 5a and 5b are held. By only providing the movable blade 33 with the bending protrusion 34, the movable blade 33 can also be used as a bending member, and a separate member for bending is unnecessary. Further, since the terminal end portion 5b of the wire 5 can be bent and held by a series of wire cutting operations, no special operation is required.

  Since the movable blade 33 returns to the original position before cutting after binding the reinforcing bars, the holding of the one side 5c of the wire 5 on the terminal end 5b side is released, and the ends 5a and 5b of the wire 5 which is cut and twisted are bound. It can be removed smoothly and easily from the machine body 2 without deformation.

  Although the above-described first embodiment has been described with respect to the vertically sliding wire cutting mechanism 31, as shown in FIG. 6, even if it is applied to the swinging wire cutting mechanism 41, the same effect can be achieved. Needless to say.

  A third embodiment of the guide portion 6 will be described. As shown in FIG. 7, the wire cutting mechanism 51 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. That is, the wire cutting mechanism 51 includes a rotatably provided circular shaft-shaped movable blade 52, and a fixed blade 53 fixed to the guide frame 13 and rotatably housing the circular shaft-shaped movable blade 52. , A rotary cutter composed of a drive lever 16 for rotating the movable blade 52.

  A wire through hole 52a is formed through the movable blade 52 having a circular shaft shape in the feeding direction of the wire 5. One end of the wire through hole 52 a opens toward the tip 8 b of the guide tube 8 and the other end opens toward the curl guide 12. The opening on one end side of the wire through hole 52a is a wire inlet 52b, and the opening on the other end side of the wire through hole 52a is a wire outlet 52c. Further, the fixed blade 53 is formed with a wire insertion hole 53a in the feeding direction of the wire 5. One end of the wire insertion hole 53a opens toward the tip portion 8b of the guide tube 8, and the other end of the wire insertion hole 53a opens toward the wire inlet 52b of the wire through hole 52a of the movable blade 52. The opening on one end side of the wire insertion hole 53a is a wire entry port 53b, and the opening on the other end side of the wire insertion hole 53a is a wire discharge port 53c.

  In the wire cutting mechanism 51, the surface of the movable blade 52 on the wire inlet 52b side is moved downward along the surface of the fixed blade 53 on the wire outlet 53c side by rotating the movable blade 52 counterclockwise by the drive lever 16. The upper edge 52d of the wire inlet 52b of the movable blade 52 slides on the wire 5 to cut the wire 5 penetrating the wire through hole 52a.

  The movable blade 52 cuts the wire 5, and the lower end edge 52e of the wire outlet 52c of the wire through hole 52a is cut and separated on the cut end portion (hereinafter, referred to as a terminal end) 5b side of the wire 5. The one side 5c is extruded in the anti-cutting direction (upward) and bent. Therefore, in the reinforcing bar binding machine 1, the lower end edge 52e of the wire outlet 52c of the wire through hole 52a of the movable blade 52 is bent and held on one side 5c on the terminal end 5b side after the wire 5 is cut. The one side 5c on the terminal end 5b side of the wire 5 is a position where the lower end edge 52e of the movable blade 52 contacts.

  In the reinforcing bar binding machine 1 having the above-described configuration, after the wire 5 is wound around the reinforcing bar 7 by the winding of the guide portion 6, the wire cutting mechanism 51 operates and the movable blade 52 rotates. The upper edge 52d of the wire inlet 52b of the wire through hole 52a of the movable blade 52 cuts the wire 5. Substantially at the same time as the cutting of the wire 5, the lower end edge 52e of the wire outlet 52c of the wire through hole 52a of the movable blade 52 pushes up one side 5c on the terminal end 5b side of the wire 5 in the cutting direction (upward) and bends it. The movable blade 52 stops at the cut position after cutting. One end 5c of the wire 5 on the terminal end 5b side is bent by the lower end edge 52e of the wire outlet 52c of the wire through hole 52a of the movable blade 52, and is caught and held by the lower end edge 52e.

  Since the starting end 5a of the wire 5 is caught and pressed by a portion including the terminal end 5b of the wire 5 held by the guide portion 6, it cannot move freely. In this way, both ends 5a and 5b of the wire 5 can be kept on the back side of the reinforcing bar even if the wire is twisted by the wire twisting device while the both ends 5a and 5b are held. When the wire 5 is cut, the wire 5 is bent to the lower end edge 52e of the movable blade 52 while the terminal portion 5b of the wire 5 is present in the wire through hole 52a of the movable blade 52. It has a long length and can reliably hook the wire 5. Further, since the terminal end portion 5b of the wire 5 can be bent and held by a series of wire cutting operations, no special operation is required.

  Since the movable blade 52 returns to the original position before cutting after binding the reinforcing bars, the holding of the one side 5c of the wire 5 on the terminal end 5b side is released, and the both ends 5a, 5b of the wire 5 cut and twisted are deformed. It can be smoothly and easily removed from the binding machine main body 2 without causing it.

  A fourth embodiment of the guide portion 6 will be described. As shown in FIG. 8, the wire cutting mechanism 61 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. That is, the wire cutting mechanism 61 includes a fixed blade 62 fixed to the guide frame 13, a movable blade 63 that slides on the fixed blade 62 to cut the wire 5, and a drive lever 16 that moves the movable blade 63. It is a slide cutter.

  A wire through hole 62 a is formed through the fixed blade 62 in the feeding direction of the wire 5. One end of the wire through hole 62 a opens toward the tip portion 8 b of the guide tube 8 and the other end opens toward the curl guide 12. The opening on one end side of the wire through hole 62a is a wire inlet 62b, and the opening on the other end side of the wire through hole 62a is a wire outlet 62c.

  The wire cutting mechanism 61 moves the movable blade 63 downward (from the outer side to the inner side of the curve of the wire) by the drive lever 16, so that one surface 63 a of the movable blade 63 is the wire outlet of the wire through hole 62 a of the fixed blade 62. The lower edge of one surface 63a of the movable blade 63 slides downward along the surface on the 62c side, and cuts the wire 5 penetrating the wire through hole 62a.

  The movable blade 63 has a lower end portion 63c that pushes out a cut end portion (hereinafter, referred to as a terminal end portion) 5b of the wire 5 that is cut and separated in a cutting direction (downward). The guide frame 13 is provided with a guide pin 65 as an abutting portion that abuts against the one side 5c of the wire 5 pushed out by the movable blade 63 on the terminal end 5b side and bends. One end 5c of the wire 5 on the terminal end 5b side pushed out by the lower end 63c of the movable blade 63 contacts the guide pin 65 and is bent. Therefore, the reinforcing bar binding machine 1 holds the one side 5c on the terminal end 5b side after cutting the wire 5 so as to be sandwiched by the lower end 63c of the movable blade 63 and the guide pin 65. The one side 5c on the terminal end 5b side of the wire 5 is a position where the guide pin 65 contacts.

  In the reinforcing bar binding machine 1 having the above-described configuration, after the wire 5 is wound around the reinforcing bar 7 by being wound by the guide portion 6, the wire cutting mechanism 61 operates and the movable blade 63 moves downward. When cut, the lower end 63c pushes the terminal end 5b of the wire 5 cut in the cutting direction (downward), and one end 5c of the wire 5 on the terminal end 5b side is brought into contact with the guide pin 65 and bent.

  The movable blade 63 stops at the cut position after cutting. The lower end portion 63c of the movable blade 63 and the guide pin 65 sandwich the one side 5c of the wire 5 on the end portion 5b side. As a result, the one side 5c of the wire 5 on the terminal end 5b side is held by the lower end 63c of the movable blade 63 and the guide pin 65. Since the starting end 5a of the wire 5 is caught and pressed by a portion including the terminal end 5b of the wire 5 held by the guide portion 6, it cannot move freely. In this way, both ends 5a and 5b of the wire 5 can be kept on the back side of the reinforcing bar even if the wire is twisted by the wire twisting device while the both ends 5a and 5b are held. The wire 5 can be bent by using the operation of cutting the wire 5 of the movable blade 63 and the guide pin 65 to hold the wire end portion 5b.

  Since the movable blade 63 returns to the original position before cutting after binding the reinforcing bars, the holding of the one side 5c on the terminal end 5b side of the wire is released, and both ends 5a of the wire 5 cut from the binding machine body 2 and twisted. It is possible to remove smoothly and easily without deforming 5b.

  The fourth embodiment has been described with respect to the vertically sliding wire cutting mechanism 61. However, as shown in FIG. 9, even if it is applied to an oscillating wire cutting mechanism 71, the same effect can be achieved. Needless to say.

  A sixth embodiment of the guide portion 6 will be described. As shown in FIG. 10, the wire cutting mechanism 81 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. That is, the wire cutting mechanism 81 includes a fixed blade 82 fixed to the guide frame 13, a movable blade 83 that slides on the fixed blade 82 to cut the wire 5, and a drive lever 16 that moves the movable blade 83. It is a slide cutter.

  A wire through hole 82a is formed through the fixed blade 82 in the feeding direction of the wire 5. One end of the wire through hole 82a opens toward the tip portion 8b of the guide tube 8, and the other end opens toward the curl guide 12. The opening on one end side of the wire through hole 82a is a wire inlet 82b, and the opening on the other end side of the wire through hole 82a is a wire outlet 82c.

  The wire cutting mechanism 81 moves the movable blade 83 downward (from the outer side to the inner side of the curve of the wire) by the drive lever 16, so that one surface 83 a of the movable blade 83 is the wire outlet of the wire through hole 82 a of the fixed blade 82. The lower edge of one surface 83a of the movable blade 83 slides downward along the surface on the 82c side and cuts the wire 5 penetrating the wire through hole 82a.

  The movable blade 83 has a lower end portion 83c that pushes out one side 5c of the cut end portion (hereinafter referred to as a terminal end) 5b of the wire 5 that has been cut and separated in the cutting direction (downward). A bending protrusion 84 having a substantially triangular shape is formed on the lower portion of the other surface 83b of the movable blade 83. The bent protrusion 84 includes a vertical surface 84a formed by extending the other surface 83b and an inclined surface 84b that is inclined upward from the tip of the vertical surface 84a toward the fixed blade 83 side.

  The guide frame 13 is provided with a guide pin 85 of an abutting portion that abuts against the one side 5c of the terminal end 5b side of the wire 5 that is pushed out and bent by the bending protrusion 84 of the movable blade 83 to bend. Therefore, in the reinforcing bar binding machine 1, the guide pin 85 holds the one side 5c of the bent end portion 5b side after the wire 5 is cut. The bending protrusion 84 is formed on the lower end portion 83c of the movable blade 83 and constitutes a bending portion of the holding device that holds the one side 5c of the wire 5 on the terminal end 5b side. The one side 5c on the terminal end 5b side of the wire 5 is a position where the tip of the bent protrusion 84 of the movable blade 83 comes into contact.

  In the reinforcing bar binding machine 1 having the above-described configuration, after the wire 5 is wound around the reinforcing bar 7 with a curling habit by the guide portion 6, the wire cutting mechanism 81 operates as shown in FIG. Then, when the movable blade 83 moves downward, the tip of the bending protrusion 84 engages with the one side 5c of the wire 5 on the terminal end 5b side and pushes down the wire 5 to bend the wire before forming a bent portion. Then, the wire 5 is cut at the lower edge of the one surface 83a.

  The movable blade 83 returns to its original position and stops immediately after cutting. Since one end 5c of the wire 5 on the terminal end 5b side is bent, it is caught by the guide pin 85 and held. Since the starting end 5a of the wire 5 is caught and pressed by the portion of the wire 5 including the terminal end 5b held by the guide portion 6, it cannot move freely. Even when the wire is twisted by the wire twisting device while the both ends 5a and 5b are held as described above, the both ends 5a and 5b of the wire 5 can be retained on the back side of the reinforcing bar. Further, since the movable blade 83 does not directly hold the end portion 5b of the wire 5, the load for holding the movable blade 83 is not applied, and the durability is improved.

  After binding the reinforcing bars, only one end 5c of the wire on the terminal end 5b side is caught and held by the guide pin 85, so that both ends 5a, 5b of the wire 5 which is cut and twisted from the binding machine body 2 are deformed. Can be removed smoothly and easily without

  A seventh embodiment of the guide portion 6 will be described. As shown in FIG. 11, the wire cutting mechanism 91 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. That is, the wire cutting mechanism 91 includes a rotatably provided circular shaft-shaped movable blade 92 and a fixed blade 93 which is fixed to the guide frame 13 and rotatably accommodates the circular shaft-shaped movable blade 92. , A rotary cutter composed of a drive lever 16 for rotating the movable blade 92.

  A wire through hole 92a is formed through the movable blade 92 having a circular shaft shape in the feeding direction of the wire 5. One end of the wire through hole 92 a opens toward the tip 8 b of the guide tube 8 and the other end opens toward the curl guide 12. The opening on one end side of the wire through hole 92a is a wire inlet 92b, and the opening on the other end side of the wire through hole 92a is a wire outlet 92c. In addition, the fixed blade 93 is formed with a wire insertion hole 93 a in the feeding direction of the wire 5. One end of the wire insertion hole 93a opens toward the guide tube 8, and the other end of the wire insertion hole 93a opens toward the wire inlet 92b of the wire through hole 92a of the movable blade 92. The opening on one end side of the wire insertion hole 93a is a wire entry port 93b, and the opening on the other end side of the wire insertion hole 93a is a wire discharge port 93c.

  The wire cutting mechanism 91 rotates the movable blade 92 counterclockwise by the drive lever 16 so that the surface of the movable blade 92 on the wire inlet 92b side moves downward along the surface of the fixed blade 93 on the wire discharge port 93c side. The upper edge 92d of the wire inlet 92b of the movable blade 92 is slid to the position to cut the wire 5 penetrating the wire through hole 92a.

  The movable blade 92 cuts the wire 5, and the lower end edge 92e of the wire outlet 92c of the wire through hole 92a is cut and cut off at the cut end portion (hereinafter referred to as the end portion) 5b side of the wire 5. The one side 5c is extruded in the anti-cutting direction (upward) and bent to form a bent portion. The guide frame 13 is provided with a guide pin 95 as an abutting portion that comes into contact with the one side 5c of the wire 5 pushed out by the movable blade 92 on the terminal end 5b side. Therefore, in the reinforcing bar binding machine 1, the one side 5c on the terminal end 5b side as a bent portion after the wire 5 is cut is sandwiched by the lower end edge 92e of the wire through hole 92a of the movable blade 92 and the guide pin 95. Will hold. The one side 5c on the terminal end 5b side of the wire 5 is a position where the lower end edge 92e of the wire through hole 92a of the movable blade 92 comes into contact.

  In the reinforcing bar binding machine 1 having the above-described configuration, after the wire 5 is wound around the reinforcing bar 7 by being wound by the guide portion 6, the wire cutting mechanism 91 operates and the movable blade 92 rotates. The upper edge 92d of the wire inlet 92b of the wire through hole 92a of the movable blade 92 cuts the wire 5. Almost at the same time as the cutting, the lower end edge 92e of the wire outlet 92c of the wire through hole 92a of the movable blade 92 pushes up the one side 5c on the terminal end 5b side of the cut wire 5 in the cutting direction (upward), and the wire through hole of the movable blade 92. The lower end edge 92e of the wire 92a and the guide pin 95 sandwich the one side 5c of the wire 5 on the terminal end 5b side. The movable blade 92 stops at the cut position after cutting. As a result, the one side 5c of the wire 5 on the terminal end 5b side is held by the lower end edge 92e of the wire outlet 92c of the movable blade 92 and the guide pin 95.

  Since the starting end 5a of the wire 5 is caught and pressed by a portion including the terminal end 5b of the wire 5 held by the guide portion 6, it cannot move freely. In this way, both ends 5a and 5b of the wire 5 can be kept on the back side of the reinforcing bar even if the wire is twisted by the wire twisting device while the both ends 5a and 5b are held. Since the end portion 5b of the wire 5 is sandwiched between the movable blade 92 and the guide pin 95 by using the operation of the movable blade 92 when the wire 5 is cut, it can be securely held.

  Since the movable blade 92 returns to the original position before cutting after binding the reinforcing bars, the holding of the one side 5c on the terminal end 5b side of the wire is released, and both ends 5a of the wire 5 cut from the binding machine body 2 and twisted. It is possible to remove smoothly and easily without deforming 5b.

  An eighth embodiment of the guide portion 6 will be described. As shown in FIG. 12, the wire cutting mechanism 101 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. That is, the wire cutting mechanism 101 includes a circular fixed blade 102 fixed to the guide frame 13, a movable blade 103 rotatably provided around the fixed blade 102, and a drive lever for rotating the movable blade 103. It is a rotary cutter composed of 16 and.

  A wire through hole 102a is formed through the fixed blade 102 having a circular shaft shape in the feeding direction of the wire 5. One end of the wire through hole 102 a opens toward the tip 8 b of the guide tube 8 and the other end opens toward the curl guide 12. The opening on one end side of the wire through hole 102a is a wire inlet 102b, and the opening on the other end side of the wire through hole 102a is a wire outlet 102c. Further, the movable blade 103 has a wire insertion hole 103a formed in the feeding direction of the wire 5. One end of the wire insertion hole 103 a opens toward the wire outlet 102 c of the wire through hole 102 a of the fixed blade 102, and the other end opens toward the curl guide 12. The opening on one end side of the wire insertion hole 103a of the movable blade 103 is the wire entrance port 103b, and the opening on the other end side of the wire insertion hole 103a is the wire discharge port 103c.

  In the wire cutting mechanism 101, the surface of the movable blade 103 on the wire entrance 103b side is moved upward along the surface of the fixed blade 102 on the wire outlet 102c side by rotating the movable blade 103 counterclockwise by the drive lever 16. The lower edge of the wire entry port 103b of the movable blade 103 slides to cut the wire 5 penetrating the wire through hole 102a.

  The movable blade 103 cuts the wire 5, and the lower end edge 103d of the wire discharge port 103c of the wire insertion hole 103a is cut and cut off to form a cut end portion (hereinafter, referred to as a terminal end) 5b side. One side 5c is extruded in the cutting direction (upward). The guide frame 13 is provided with a guide pin 105 that comes into contact with one side 5c of the wire 5 extruded by the movable blade 103 on the terminal end 5b side. Therefore, the reinforcing bar binding machine 1 holds the one side 5c on the terminal end 5b side after cutting the wire 5 by the lower end edge 103d of the wire insertion hole 103a of the movable blade 103 and the guide pin 105. The one side 5c on the terminal end 5b side of the wire 5 is a position where the lower end edge 92e of the wire insertion hole 103a through hole 92a of the movable blade 103 contacts.

  With the above-described configuration, in the reinforcing bar binding machine 1, after the wire 5 is wound around the reinforcing bar 7 with the curling tendency of the guide section 6, the wire cutting mechanism 101 operates and the movable blade 103 rotates upward. Then, the lower edge of the wire entrance 103b of the movable blade 103 cuts the wire. Almost at the same time as the cutting, the lower edge 103d of the wire discharge port 103c of the movable blade 103 pushes up the one side 5c of the cut wire 5 on the terminal end 5b side in the cutting direction (upward) to lower the lower end of the wire discharge port 103c of the movable blade 103. The edge 103d and the guide pin 105 sandwich one end 5c of the terminal end 5b of the wire 5. The movable blade 103 stops at the cut position after cutting. As a result, the movable blade 103 and the guide pin 105 hold one end 5c of the wire 5 on the terminal end 5b side.

  Since the starting end 5a of the wire 5 is caught and pressed by a portion including the terminal end 5b of the wire 5 held by the guide portion 6, it cannot move freely. In this way, both ends 5a and 5b of the wire 5 can be kept on the back side of the reinforcing bar even if the wire is twisted by the wire twisting device while the both ends 5a and 5b are held. The end portion 5b of the wire 5 is sandwiched between the movable blade 92 and the guide pin 105 by using the operation of the movable blade 103 when cutting the wire 5, so that the wire 5 can be reliably held. The fourth to eighth embodiments are configured to hold the terminal end portion 5b of the wire 5 by using a guide pin as an abutting portion, and this guide pin can be arranged by utilizing the space of the guide frame 13. Since the guide pin itself may be smaller than the wire cutting mechanism and other members, arrangement adjustment is easy and maintainability is good.

  Since the movable blade 103 returns to the original position before cutting after binding the reinforcing bars, the holding of one side 5c of the terminal end 5b of the wire is released, and both ends 5a of the wire 5 cut from the binding machine body 2 and twisted, It can be removed smoothly and easily without deforming 5b.

  In the above eighth embodiment, the wire cutting mechanism 101 has been described as having a configuration including a circular fixed blade 102 and a movable blade 103 rotatably provided around the fixed blade 102. However, a wire cutting mechanism that includes the inner movable blade 102 and the outer movable blade 103 that rotatably accommodates the inner movable blade 102, and that rotates the inner movable blade 102 and the outer movable blade 103 to cut the wire 5. It doesn't matter.

  A ninth embodiment of the guide portion 6 will be described. As shown in FIG. 13, the wire cutting mechanism 111 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. That is, the wire cutting mechanism 111 includes a fixed blade 112 fixed to the guide frame 13, a movable blade 113 that slides on the fixed blade 112 to cut the wire 5, and a drive lever 16 that moves the movable blade 113. It is a slide cutter.

  A wire through hole 112a is formed through the fixed blade 112 in the feeding direction of the wire 5. One end of the wire through hole 112 a opens toward the tip 8 b of the guide tube 8 and the other end opens toward the curl guide 12. The opening on one end side of the wire through hole 112a is a wire inlet 112b, and the opening on the other end side of the wire through hole 112a is a wire outlet 112c.

  The wire cutting mechanism 111 moves the movable blade 113 upward (from the inside to the outside of the curve of the wire) by the drive lever 16 so that one surface 113a of the movable blade 113 is the wire outlet of the wire through hole 112a of the fixed blade 112. The upper edge of one surface 113a of the movable blade 113 slides upward along the surface on the 112c side and cuts the wire 5 penetrating the wire through hole 112a.

  The movable blade 113 is provided with a pressing member 115 that pushes out one side 5c of the cut wire 5 on the terminal end 5b side in the cutting direction (upward). The pressing member 115 is formed in an arm shape, and is provided below the other surface 113b of the movable blade 113. A substantially triangular pressing protrusion 116 is formed at the tip of the pressing member 115. The pressing protrusion 116 includes a vertical surface 116a formed by extending the front end surface of the pressing member 115 and an inclined surface 116b that is inclined downward from the front end of the vertical surface 116a toward the other surface 113b. The pressing protrusion 116 constitutes a pressing portion of the holding device that presses the one side 5c of the cut wire 5 on the terminal end 5b side toward the side surface (guide groove 20) side of the wire guide passage (curl guide 12). The one side 5c on the terminal end 5b side of the wire 5 is a position where the tip of the pressing protrusion 116 of the movable blade 113 contacts.

  In the reinforcing bar binding machine 1 having the above-described configuration, after the wire 5 is wound around the reinforcing bar 7 by being curled by the guide portion 6, the wire cutting mechanism 111 operates and the movable blade 113 moves upward. Before cutting, the upper edge of the other surface 113b of the movable blade 113 engages with the vicinity 5d of the terminal end 5b of the wire 5 to push up the wire 5 and bend the wire 5 at the upper edge of one surface 113a of the movable blade 113. The wire 5 is cut.

  After cutting, the tip of the pressing protrusion 116 further engages with one side 5c of the wire 5 on the terminal end 5b side to press the wire 5 toward the side surface (guide groove 20) of the wire guide passage (curl guide 12). The movable blade 113 stops at the cut position after cutting. The vicinity 5d of the terminal portion of the wire 5 is bent by the upper edge of the other surface 113b of the movable blade 113. Since the wire guide passage (curl guide 12) is narrowed by the side surface (guide groove 20) and the tip of the pressing protrusion 116, the vicinity 5d of the bent end portion of the wire 5 is caught and held by the tip of the pressing protrusion 116. To be done. Since the starting end 5a of the wire 5 is caught and pressed by a portion including the terminal end 5b of the wire 5 held by the guide portion 6, it cannot move freely. In this way, both ends 5a and 5b of the wire 5 can be kept on the back side of the reinforcing bar even if the wire is twisted by the wire twisting device while the both ends 5a and 5b are held. It is only necessary to provide the movable blade 113 with the pressing member 115, and the terminal end portion 5b of the wire 5 can be pressed and held by the pressing member 115 against the curl guide 12 by a series of wire cutting operations.

  When the trigger is released after bundling the reinforcing bars, the pressing member 115 together with the movable blade 113 returns to the original position, so that the holding of the wire near the terminal end 5d is released, and the wire 5 cut from the binding machine body 2 and twisted. Both ends 5a, 5b can be removed smoothly and easily without deformation. In the pressing member 115, the distance between the pressing protrusion 116 and the guide groove 20 is narrowed to make it difficult to pass through the vicinity 5d of the end of the cut wire 5, but the pressing protrusion 115 causes the end of the wire 5 cut. The one side 5c on the 5b side may be configured to be pressed and held against the side surface (guide groove 20) side of the wire guide passage (curl guide 12).

  A tenth embodiment of the guide portion 6 will be described. As shown in FIG. 14, the wire cutting mechanism 121 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. That is, the wire cutting mechanism 121 includes a fixed blade 122 having a circular shaft shape fixed to the guide frame 13, a movable blade 123 rotatably provided around the fixed blade 122, and a drive lever for rotating the movable blade 123. It is a rotary cutter composed of 16 and.

  A wire through hole 122 a is formed through the fixed blade 122 having a circular shaft shape in the feeding direction of the wire 5. One end of the wire through hole 122 a opens toward the tip 8 b of the guide tube 8 and the other end opens toward the curl guide 12. The opening on one end side of the wire through hole 122a is a wire inlet 122b, and the opening on the other end side of the wire through hole 122a is a wire outlet 122c. In addition, the movable blade 123 is formed with a wire insertion hole 123a in the feeding direction of the wire 5. One end of the wire insertion hole 123 a opens toward the wire outlet 122 c of the wire through hole 122 a of the fixed blade 122, and the other end opens toward the curl guide 12. The opening on one end side of the wire insertion hole 123a is a wire entry port 123b, and the opening on the other end side of the wire insertion hole 123a is a wire discharge port 123c.

  The wire cutting mechanism 121 rotates the movable blade 123 counterclockwise by the drive lever 16 so that the surface of the movable blade 123 on the wire entrance 123b side is moved upward along the surface of the fixed blade 122 on the wire outlet 122c side. The lower edge of the wire entry port 123b of the movable blade 123 slides to cut the wire 5 penetrating the wire through hole 122a.

  The movable blade 123 is linked to a holding shaft 129 as a holding member via a link mechanism 128. The link mechanism includes a first link member 128a and a second link member 128b. The second link member 128b is rotatably attached to the guide frame 13. One of the first link members 128a is rotatably attached to the movable blade 123, and the other is rotatably attached to an upper portion of the second link member 128b. The holding shaft 129 is attached to the guide frame 13 so as to be slidable in the axial direction, has a rear end rotatably connected to the second link member 128b, and has a tip on one side 5c of the wire 5 on the end portion 5b side. It comes to abut.

  The movable blade 123 cuts the wire and, via the link mechanism 128, the side 5c of the wire guide path (curl guide 12) on the side 5c on the terminal end 5b side of the wire 5 where the tip of the holding shaft 129 is cut. Press the guide groove 20) side. Therefore, in the reinforcing bar binding machine 1, the one side 5c of the terminal end 5b after the wire 5 is cut is held by the tip of the holding shaft 129 and the side surface (guide groove 20) side of the wire guide passage (curl guide 12). become. The one side 5c on the terminal end 5b side of the wire 5 is a position where the tip end of the holding shaft 129 contacts.

  In the reinforcing bar binding machine 1 having the above-described configuration, after the wire 5 is wound around the reinforcing bar 7 by being wound by the guide portion 6, the wire cutting mechanism 121 operates and the movable blade 123 rotates. The lower edge of the wire entrance 123b of the wire insertion hole 123a cuts the wire. Almost at the same time as the cutting, one side 5c of the terminal end 5b of the wire 5 in which the tip of the holding shaft 129 is cut via the link mechanism 128 is pressed against the side surface (guide groove 20) of the wire guide passage (curl guide 12). The one end 5c of the end portion 5b is clamped. The movable blade 123 stops at the cut position after cutting. As a result, one side 5c of the wire 5 on the terminal end 5b side is held by the tip of the holding shaft 129 and the side surface (guide groove 20) of the wire guide passage (curl guide 12). In the tenth embodiment, the holding member is a shaft-shaped (arm-shaped) holding shaft, but the other side of the link mechanism is brought close to the wire guide passage side to form, for example, a circular or elliptical holding member. Is also good.

  Since the starting end 5a of the wire 5 is caught and pressed by a portion including the terminal end 5b of the wire 5 held by the guide portion 6, it cannot move freely. In this way, both ends 5a and 5b of the wire 5 can be kept on the back side of the reinforcing bar even if the wire is twisted by the wire twisting device while the both ends 5a and 5b are held. It is only necessary to provide the movable blade 123 with the link mechanism 128 and the holding shaft 129, and the terminal end portion 5b of the wire 5 can be pressed and held by the holding shaft 129 against the curl guide 12 by a series of wire cutting operations. Further, the pressing force of the holding shaft 129 can be adjusted by the length of the link mechanism.

  Since the movable blade 123 returns to the original position before cutting after binding the reinforcing bars, the holding shaft 129 is separated from the wire 5 via the link mechanism 128, and the holding of the one side 5c on the terminal end 5b side of the wire 5 is released. Both ends 5a and 5b of the wire 5, which is cut and twisted from the binding machine body 2, can be removed smoothly and easily without deformation.

  An eleventh embodiment of the guide portion 6 will be described. The eleventh embodiment differs from the tenth embodiment only in the wire cutting mechanism, and will be described with reference to FIG. The wire cutting mechanism 131 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. That is, the wire cutting mechanism 131 includes a rotatably provided circular shaft-shaped movable blade 122 and a fixed blade 123 fixed to the guide frame 13 and rotatably housing the circular shaft-shaped movable blade 122. A rotary cutter composed of a drive lever 16 for rotating the movable blade 122.

  A wire through hole 122a is formed through the movable blade 122 having a circular shaft shape in the feeding direction of the wire 5. One end of the wire through hole 122 a opens toward the tip 8 b of the guide tube 8 and the other end opens toward the curl guide 12. The opening on one end side of the wire through hole 122a is a wire inlet 122b, and the opening on the other end side of the wire through hole 122a is a wire outlet 122c. Further, the fixed blade 123 is formed with a wire insertion hole 123a in the feeding direction of the wire 5. One end of the wire insertion hole 123 a opens toward the wire outlet 122 c of the rotary blade 122, and the other end opens toward the curl guide 12. The opening on one end side of the wire insertion hole 123a is a wire entry port 123b, and the opening on the other end side of the wire insertion hole 123a is a wire discharge port 123c.

  The wire cutting mechanism 131 rotates the movable blade 122 counterclockwise by the drive lever 16 so that the surface of the movable blade 122 on the wire outlet 122c side moves upward along the surface of the fixed blade 123 on the wire entrance 123b side. The lower end edge of the wire outlet 122c of the movable blade 122 is slid on to cut the wire 5 penetrating the wire through hole 122a.

  The drive lever 16 is linked to a holding shaft 129 via a link mechanism 128. The link mechanism 128 includes a first link member 128a and a second link member 128b. The second link member 128b is rotatably attached to the guide frame 13. One of the first link members 28a is rotatably attached to the rotary blade 122, and the other is rotatably attached to the upper part of the second link member 128b. The holding shaft 129 is attached to the guide frame 13 so as to be slidable in the axial direction, has a rear end rotatably connected to the second link member 128b, and has a tip on one side 5c of the wire 5 on the end portion 5b side. It comes to abut.

  The movable blade 122 cuts the wire and, via the link mechanism 128, the side 5c of the wire guide path (curl guide 12) on the one side 5c on the terminal end 5b side of the wire 5 where the tip of the holding shaft 129 is cut. Press the guide groove 20) side. Therefore, in the reinforcing bar binding machine 1, the one side 5c of the terminal end 5b after the wire 5 is cut is held by the tip of the holding shaft 129 and the side surface (guide groove 20) side of the wire guide passage (curl guide 12). become. The one side 5c on the terminal end 5b side of the wire 5 is a position where the tip end of the holding shaft 129 contacts. In the eleventh embodiment, the holding member is a shaft-shaped (arm-shaped) holding shaft, but the other side of the link mechanism is brought close to the wire guide passage side to form, for example, a circular or elliptical holding member. Is also good.

  With the above-described configuration, the reinforcing bar binding machine 1 causes the wire cutting mechanism 131 to operate and the movable blade 122 to rotate upward after the wire 5 has been wound around the reinforcing bar 7 by being curled by the guide portion 6. Then, when the wire is cut, the one end 5c of the wire 5 at which the tip of the holding shaft 129 is cut through the operation lever and the link mechanism 128 is connected to the side surface (guide groove 20) of the wire guide passage (curl guide 12). ) To clamp the one end 5c of the wire 5 on the end 5b side. The movable blade 123 stops at the cut position after cutting. As a result, one side 5c of the wire 5 on the terminal end 5b side is held by the tip of the holding shaft 129 and the side surface (guide groove 20) of the wire guide passage (curl guide 12).

  Since the starting end 5a of the wire 5 is caught and pressed by a portion including the terminal end 5b of the wire 5 held by the guide portion 6, it cannot move freely. In this way, both ends 5a and 5b of the wire 5 can be kept on the back side of the reinforcing bar even if the wire is twisted by the wire twisting device while the both ends 5a and 5b are held. It is only necessary to provide the movable blade 122 with the link mechanism 128 and the holding shaft 129, and the terminal end portion 5b of the wire 5 can be pressed and held by the holding shaft 129 against the curl guide 12 by a series of wire cutting operations. Further, the pressing force of the holding shaft 129 can be adjusted by the length of the link mechanism.

  Since the movable blade 122 returns to the original position before cutting after binding the reinforcing bars, the holding shaft 129 is separated from the wire 5 via the link mechanism 128, and the holding of the one side 5c of the wire 5 on the terminal end 5b side is released. Both ends 5a and 5b of the wire 5, which is cut and twisted from the binding machine body 2, can be removed smoothly and easily without deformation.

  A twelfth embodiment of the guide portion 6 will be described. In the tenth and eleventh embodiments, the holding shaft 129 of the holding member is linked to the wire cutting mechanisms 121 and 131 via the link mechanism 128. However, as shown in FIG. The drive unit of the binding machine body 2 may be linked via another link mechanism. The wire cutting mechanism is the rotary cutter or the slide cutter as described above. When the wire is cut by the wire cutting mechanism, the distal end of the holding shaft 129 is cut and separated by the drive unit of the binding machine body 2 via another link mechanism (hereinafter, referred to as a terminal end). The one side 5c of the 5b side is pressed to the side surface (guide groove 20) side of the wire guide passage (curl guide 12). Therefore, in the reinforcing bar binding machine 1, the one side 5c of the terminal end 5b after the wire 5 is cut is held by the tip of the holding shaft 129 and the side surface (guide groove 20) side of the wire guide passage (curl guide 12). become. The one side 5c on the terminal end 5b side of the wire 5 is a position where the tip end of the holding shaft 129 contacts.

  With the above-described configuration, the reinforcing bar binding machine 1 is configured such that when the wire 5 is wound around the reinforcing bar 7 by the guide portion 6 and is wound around the reinforcing bar 7, when the wire cutting mechanism operates to cut the wire, another link mechanism is used. One end 5c of the wire 5 whose end is cut through the holding shaft 129 is pressed against the side surface (guide groove 20) of the wire guide passage (curl guide 12) to move the end of the wire 5 to the end 5b. Hold the side 5c. As a result, one side 5c of the wire 5 on the terminal end 5b side is held by the tip of the holding shaft 129 and the side surface (guide groove 20) of the wire guide passage (curl guide 12).

  Since the starting end 5a of the wire 5 is caught and pressed by a portion including the terminal end 5b of the wire 5 held by the guide portion 6, it cannot move freely. In this way, both ends 5a and 5b of the wire 5 can be kept on the back side of the reinforcing bar even if the wire is twisted by the wire twisting device while the both ends 5a and 5b are held. Since the drive unit is used separately from the wire cutting mechanism, it is possible to independently adjust the wire holding timing. In the ninth to twelfth embodiments, the curl guide 12 and the pressing member or the holding member are used to hold the terminal end portion 5b of the wire 5. Since the wire guide passage of the curl guide 12 has a wide range, the pressing member is used. It is easy to adjust the arrangement of the holding member.

  After binding the reinforcing bars, the holding shaft 129 is returned to the original position via another link mechanism by the driving unit of the reinforcing bar binding machine, the holding of the one side 5c on the terminal end 5b side of the wire is released, and the binding machine main body 2 is released. The both ends 5a, 5b of the cut and twisted wire 5 can be removed smoothly and easily without deformation.

  INDUSTRIAL APPLICABILITY The present invention is applicable to a reinforcing bar binding machine.

1 Reinforcing Bar Bundling Machine 2 Bundling Machine Main Body 3 Storage Room 4 Trigger 5 Wire 5a Starting End 5b Ending 5c One Side 6 Guide Part 7 Reinforcing Bar 8 Guide Tube 8a One End 8b Other End (Tip)
9 Lower guide 12 Curl guide 13 Guide frame 16 Drive lever 20 Guide groove 23 Guide pin 31 Wire cutting mechanism 32 Fixed blade 32a Wire through hole 32b Wire inlet 32c Wire outlet 32e One surface 33 Movable blade 33a One surface 33b Other surface 34 Bending Protrusion 34a Vertical Surface 34b Inclined Surface 41 Wire Cutting Mechanism 51 Wire Cutting Mechanism 52 Movable Blade 52a Wire Through Hole 52b Wire Inlet 52c Wire Outlet 52d Upper Edge 52e Lower Edge 53 Fixed Blade 53a Wire Insertion Hole 53b Wire Inlet 53c Wire Discharge port 61 Wire cutting mechanism 62 Fixed blade 62a Wire through hole 62b Wire inlet 62c Wire outlet 63 Movable blade 63a One surface 63c Lower end 65 Guide pin 71 Wire cutting mechanism 81 Wire cutting mechanism 82 Fixed blade 82a Wire through hole 82b Wire inlet Numeral 82c Wire outlet 83 Movable blade 83a One surface 83b Other surface 83c Lower end portion 84 Bending protrusion 84a Vertical surface 84b Inclined surface 85 Guide pin 91 Wire cutting mechanism 92 Movable blade 92a Wire through hole 92b Wire inlet 92c Wire outlet 92d Upper edge 92e Lower edge 93 Fixed blade 93a Wire insertion hole 93b Wire entry port 93c Wire discharge port 95 Guide pin 101 Wire cutting mechanism 102 Movable blade 102a Wire through hole 102b Wire entry 102c Wire outlet 103 Fixed blade 103a Wire insertion hole 103b Wire entry port 103c Wire discharge port 103d Lower end edge 105 Guide pin 111 Wire cutting mechanism 112 Fixed blade 112a Wire through hole 112b Wire inlet 112c Wire outlet 113 Movable blade 113a One surface 113b Other surface 115 Pressing member 116 Pressing protrusion 116a Vertical surface 116b Inclined surface 121 Wire cutting mechanism 122 Fixed blade 122a Wire through hole 122b Wire inlet 122c Wire outlet 123 Movable blade 123a Wire insertion hole 123b Wire entry port 123c Wire outlet 126 Operation lever 128 Link mechanism 128a First link member 128b Second link member 129 Holding shaft (holding member)
131 Wire cutting mechanism

Claims (3)

The wire reel can be detachably attached, and the wire is pulled out from the attached wire reel and sent to the guide section provided at the tip of the binding machine body, and the guide section gives a winding tendency to the inside of the guide section. In a rebar binding machine that binds the rebar by twisting the wound portion while sending out around the placed rebar and winding the wire around the rebar and then cutting the wire by a wire cutting mechanism,
The wire cutting mechanism is a cutter including a fixed blade having a wire through hole formed in the wire feeding direction, and a movable blade that slides or swings on the fixed blade to cut the wire,
The guide unit is provided with a holding device that holds the cut end side of the wire cut and cut in conjunction with the cutting operation of the movable blade,
The holding device is a pressing protrusion formed on the tip of a pressing member formed on one side of the movable blade,
The pressing protrusion is a reinforcing bar binding machine that presses the cut end side of the cut and separated wire toward the side surface side of the wire guide passage. The holding device, the pressing projections, reinforcing bar binding machine according to claim 1, characterized in that for holding the cut end portion side of the wire, separated by cutting against the side surface of the wire guide passage. The reinforcing bar binding machine according to claim 1, wherein the pressing protrusion is a substantially triangular protrusion.