JP2018109294A - Binding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement binding machine capable of preventing entrance of foreign matter from a portion where a movable component is disposed.SOLUTION: A reinforcement binding machine 1A includes: a wire feeding part 3A for feeding a wire to be wound on a reinforcement; a curl guide part 5A that gives a curl to the wire fed from the wire feeding part 3A; a cut part 6A that cuts the wire wound on the reinforcements; and a binding part 7A that grasps and twists the wire. The cut part 6A includes: a movable blade 61A; and a transmission mechanism 62A that transmits a driving force to a movable blade 61A. The reinforcement binding machine 1A includes: a sealing part 810 that blocks foreign matters from entering into travelling route of a second link 621A of a transmission mechanism 62A from the outside.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a binding machine that binds bundles such as reinforcing bars with wires.

  Conventionally, a binding machine called a reinforcing bar binding machine that winds a wire around two or more reinforcing bars, twists the wire wound around the reinforcing bars, and binds the two or more reinforcing bars with a wire has been proposed.

  Such a binding machine includes a gripping member that grips the wire and a sleeve that opens and closes the gripping member and rotates the gripping member that grips the wire in order to twist the wire wound around the reinforcing bar. A configuration of a bundling mechanism that is operated by a rotating motion of a rotating shaft on which a slab is formed has been proposed (see, for example, Patent Documents 1 and 2).

  In binding, a long wire is wound around a reinforcing bar, the wire wound around the reinforcing bar is cut, and then the wire is twisted. For this reason, the binding machine is provided with a cutting mechanism for cutting the wire, and a configuration has been proposed in which the movement of the sleeve described above is transmitted to a movable blade portion via a transmission mechanism such as a link (for example, see Patent Document 3). ).

Japanese Patent No. 4747454 Japanese Patent No. 5045548 Japanese Patent No. 4016802

  In a power tool such as a binding machine, a configuration is known in which a partition such as a rib is provided inside the housing to shield the inside and outside of the apparatus so that foreign matter such as dust does not enter the inside. However, intrusion of foreign matters could not be suppressed at locations where movable parts of a cutting mechanism that cuts the wire and a bundling mechanism that operates a sleeve that rotates a gripping member that grips the wire exist.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a binding machine capable of suppressing entry of a foreign substance from a portion where a movable part is provided.

  In order to solve the above-described problems, the present invention provides a wire feeding unit that feeds a wire wound around a bundle, a curl guide unit that forms a path for winding the wire fed by the wire feeding unit, and a winding around the bundle. A cutting section for cutting the wire, a binding section for twisting the wire wound around the bundle, and a main body section provided with a curl guide section at one end. The cutting section is cut across the wire. And a transmission member that transmits a driving force that relatively moves the pair of blade portions to the blade portion, and the main body portion feeds the wire that is sent to the curl guide portion by the wire feeding portion. A sealing part that has an introduction part through which the transmission member passes in the movement path of the transmission member that operates the blade part provided in the path, and seals the introduction part with a sealing member having an opening through which the transmission member passes Is a binding machine provided in the introduction section.

  In addition, the present invention cuts the wire wound around the bundle, the wire feed section for sending the wire wound around the bundle, the curl guide section constituting the path for winding the wire fed at the wire feed section around the bundle, and the wire wound around the bundle A cutting part, a binding part for twisting a wire wound around the binding object, and a main body part provided with a curl guide part at one end; the binding part has a rotating shaft having a screw part on the outer periphery; A movable member that is screwed to the rotating shaft and covers at least a part of the outer peripheral surface of the rotating shaft, and an operation opening formed on one end side of the movable member, and twists a wire wound around a bundle. The outer peripheral surface of the rotary shaft between the outer peripheral surface of the rotary shaft and the inner peripheral surface of the movable member, and between the screw portion of the rotary shaft and the operating opening of the movable member. And a rotating body sealing member that seals between the inner peripheral surface of the movable member.

  In this invention, it can suppress that foreign materials, such as dust, penetrate | invade into the inside of a main-body part through the movement path | route of the transmission member which operates a blade part. Moreover, it can suppress that foreign materials, such as dust, penetrate | invade into the inside of the movable member provided with the holding member. Thereby, since it can suppress that foreign materials, such as dust, penetrate | invade from the site | part in which the movable part is provided, generation | occurrence | production of the malfunction by a foreign material can be suppressed.

It is the block diagram seen from the side which shows an example of the whole structure of the reinforcing bar binding machine of this Embodiment. It is the block diagram seen from the side which shows an example of the principal part structure of the reinforcing bar binding machine of this Embodiment. It is a block diagram which shows an example of a wire feed part. It is a block diagram which shows an example of a wire feed part. It is a disassembled perspective view which shows an example of the cutting part of this Embodiment. It is a side view which shows an example of the cutting part of this Embodiment. It is a block diagram which shows an example of a binding part. It is a block diagram which shows an example of a binding part. It is a side view which shows the principal part structure of a movable member. It is the perspective view seen from the front which shows an example of the principal part structure of the reinforcing bar binding machine of this Embodiment. It is a block diagram which shows an example of the sealing member in a binding part. It is a block diagram which shows an example of the sealing part in the movement path | route of a transmission mechanism. It is operation | movement explanatory drawing which shows the detail of an example of the operation | movement which hold | grips and twists a wire. It is operation | movement explanatory drawing which shows the detail of operation | movement of the sealing part in the movement path | route of a transmission mechanism. It is operation | movement explanatory drawing which shows the detail of operation | movement of the sealing part in the movement path | route of a transmission mechanism. It is a block diagram which shows the other example of the sealing part in the movement path | route of a transmission mechanism. It is a block diagram which shows the other example of the sealing part in the movement path | route of a transmission mechanism.

  Hereinafter, an example of a reinforcing bar binding machine as an embodiment of a binding machine of the present invention will be described with reference to the drawings.

<Configuration example of reinforcing bar binding machine of the present embodiment>
FIG. 1 is a side view showing an example of the overall configuration of the reinforcing bar binding machine according to the present embodiment, and FIG. 2 is a side view showing an example of the main configuration of the reinforcing bar binding machine according to the present embodiment. It is a block diagram.

  The reinforcing bar binding machine 1A of the present embodiment sends the wire W in the positive direction which is one direction, winds it around the reinforcing bar S which is a binding object, and sends the wire W wound around the reinforcing bar S to the other Then, the wire W is twisted and the rebar S is bound by the wire W.

For this reason, the reinforcing bar binding machine 1 </ b> A includes a magazine 2 </ b> A that is a storage unit in which the wires W are stored and a wire feed unit 3 </ b> A that sends the wires W. Further, the reinforcing bar binding machine 1A includes a first wire guide 4A ₁ for guiding the wire W to be fed to the wire feed unit 3A, the second wire guide 4A ₂ for guiding the wire W fed from the wire feed unit 3A .

  Furthermore, the reinforcing bar binding machine 1A includes a curl guide part 5A that forms a path for winding the wire W fed by the wire feeding part 3A around the reinforcing bar S, and a cutting part 6A that cuts the wire W wound around the reinforcing bar S. Is provided. Further, the reinforcing bar binding machine 1A includes a binding part 7A for twisting the wire W wound around the reinforcing bar S.

  The magazine 2A is an example of a reel storage unit, and a reel 20 around which a long wire W is wound so as to be fed out is stored in a rotatable and detachable manner. In the reinforcing bar binding machine 1A of the present embodiment, two wires W are wound around the reel 20 so that the reinforcing bars S can be bundled so that the reinforcing bars S can be bound by the two wires W. As the wire W, a wire made of a metal wire that can be plastically deformed, a wire in which the metal wire is coated with a resin, or a stranded wire is used.

  3 and 4 are configuration diagrams showing an example of the wire feeding unit. Next, the configuration of the wire feeding unit 3A will be described. 3 A of wire feed parts are provided with the 1st feed gear 30L and the 2nd feed gear 30R which send the wire W by rotation operation as a pair of feed member which clamps and feeds the two wires W arranged in parallel.

  The first feed gear 30L includes a tooth portion 31L that transmits a driving force. The tooth portion 31L has a shape constituting a spur gear in this example, and is formed on the entire outer periphery of the first feed gear 30L. The first feed gear 30L includes a groove portion 32L in which the wire W is inserted. In this example, the groove portion 32L is formed of a concave portion having a substantially V-shaped cross section, and is formed along the circumferential direction on the entire outer periphery of the first feed gear 30L.

  The second feed gear 30R includes a tooth portion 31R that transmits a driving force. In this example, the tooth portion 31R has a shape constituting a spur gear, and is formed on the entire circumference of the second feed gear 30R. The second feed gear 30R includes a groove portion 32R into which the wire W is inserted. In this example, the groove portion 32R is formed of a concave portion having a substantially V-shaped cross section, and is formed along the circumferential direction on the entire outer periphery of the second feed gear 30R.

  The wire feed portion 3A is configured so that the groove portion 32L of the first feed gear 30L and the groove portion 32R of the second feed gear 30R are opposed to each other, and the first feed gear 30L and the second feed gear 30R are connected to the feed path of the wire W. Is provided.

  Since the wire feed section 3A holds the wire W between the first feed gear 30L and the second feed gear 30R, the first feed gear 30L and the second feed gear 30R are pressed toward each other. . As a result, the wire feed portion 3A holds the wire W between the groove portion 32L of the first feed gear 30L and the groove portion 32R of the second feed gear 30R. In this example, the second feed gear 30R is displaced with respect to the first feed gear 30L.

  Therefore, the wire feed portion 3A includes a displacement member 36 that displaces the second feed gear 30R in a direction in which the second feed gear 30R approaches and separates from the first feed gear 30L. In the displacement member 36, the second feed gear 30R is rotatably supported by the shaft 300R on one end side. Further, the displacement member 36 is supported by the support member 301 of the wire feed portion 3A so that the other end thereof can rotate about the shaft 36a.

  The displacement member 36 is pressed by a spring (not shown) and is displaced in the direction of the arrow V1 by a rotation operation with the shaft 36a as a fulcrum. Thus, the second feed gear 30R is pressed in the direction of the first feed gear 30L by the force of the spring 38.

  When the wire W is loaded between the first feed gear 30L and the second feed gear 30R, the wire is interposed between the groove portion 32L of the first feed gear 30L and the groove portion 32R of the second feed gear 30R. W is pinched.

  In addition, the wire feed portion 3A has a tooth portion 31L of the first feed gear 30L in a state where the wire W is sandwiched between the groove portion 32L of the first feed gear 30L and the groove portion 32R of the second feed gear 30R. The tooth portion 31R of the second feed gear 30R meshes. Thereby, the driving force by rotation is transmitted between the first feed gear 30L and the second feed gear 30R.

  The wire feed section 3A includes a feed motor 33 that is an example of a prime mover that drives the first feed gear 30L and, in this example, the first feed gear 30L and the driving force of the feed motor 33. Is provided to the first feed gear 30L.

  The driving force transmission mechanism 34 is an example of a prime mover driving force transmission unit, and includes a small gear 33a attached to the shaft of the feed motor 33 and a large gear 33b that meshes with the small gear 33a. The driving force transmission mechanism 34 includes a small feed gear 34a to which the driving force is transmitted from the large gear 33b and meshes with the first feed gear 30L. The small gear 33a, the large gear 33b, and the feed small gear 34a are each constituted by a spur gear.

  The first feed gear 30 </ b> L rotates when the rotation operation of the feed motor 33 is transmitted via the driving force transmission mechanism 34. The second feed gear 30R is rotated by the rotation of the first feed gear 30L transmitted by the meshing of the tooth portion 31L and the tooth portion 31R, and is driven by the first feed gear 30L.

  Thereby, wire feed part 3A sends wire W pinched between the 1st feed gear 30L and the 2nd feed gear 30R along the extension direction of wire W. In the configuration in which the two wires W are fed, a frictional force generated between the groove portion 32L of the first feed gear 30L and one wire W, and between the groove portion 32R of the second feed gear 30R and the other wire W are provided. The two wires W are fed in a state of being parallel to each other due to the generated friction force and the friction force generated between one wire W and the other wire W.

  The wire feed portion 3A switches the rotation direction of the first feed gear 30L and the second feed gear 30R by switching the rotation direction of the feed motor 33 and switches the rotation direction of the wire W. It is done.

Next, a wire guide for guiding the feeding of the wire W will be described. As shown in FIG. 2, the first wire guide 4A _1, compared feed direction of the wire W fed in the forward direction, it is arranged upstream of the first feed gear 30L and the second feed gear 30R. The second wire guide 4A _2, compared feed direction of the wire W fed in the forward direction, is arranged downstream of the first feed gears 30L and second feed gears 30R.

The first wire guide 4A ₁ and the second wire guide 4A ₂ is provided with a guide hole 40A where the wire W passes. The guide hole 40A has a shape that regulates the radial position of the wire W. The configuration to send the two wires W, the first wire guide 4A ₁ and the second wire guide 4A _2, the shape of the guide hole 40A through by parallel two wires W are formed.

The first wire guide 4A ₁ and the second wire guide 4A _2, the guide hole 40A is provided on the feed path L of the wire W passing between the first feed gear 30L and the second feed gear 30R. The first wire guide 4A ₁ is a wire W through the guide hole 40A, to guide the feed path L between the first feed gear 30L and the second feed gear 30R.

The first wire guide 4A ₁ and the second wire guide 4A _2, the wire introduction section on the upstream side of the guide hole 40A relative to the feeding direction of the wire W fed in the forward direction, the opening area than the downstream A tapered shape such as a conical shape or a pyramidal shape with a large diameter. Thus, the introduction of the first wire guide 4A ₁ and second wire W to the wire guide 4A ₂ is facilitated.

  Next, the curl guide portion 5A that constitutes the feed path of the wire W for winding the wire W around the reinforcing bar S will be described. The curl guide portion 5A guides the curl guide 50 for winding the wire W fed by the first feed gear 30L and the second feed gear 30R and the wire W fed from the curl guide 50 to the binding portion 7A. A guide 51 is provided.

  The curl guide 50 includes a first guide pin 53a and a second guide pin 53b that serve as guide members for winding the wire W in cooperation with the guide groove 52 constituting the feed path of the wire W and the guide groove 52. Is provided.

  The first guide pin 53a is provided on the introduction side of the wire W fed by the first feed gear 30L and the second feed gear 30R in the curl guide, and with respect to the feed path of the wire W by the guide groove 52, It is arranged inside the radial direction of the loop Ru formed by the wire W. The first guide pin 53a regulates the feed path of the wire W so that the wire W fed along the guide groove 52 does not enter the inside of the radial direction of the loop Ru formed by the wire W.

  The second guide pin 53b is provided on the discharge portion side of the wire W fed by the first feed gear 30L and the second feed gear 30R in the curl guide 50, and with respect to the feed path of the wire W by the guide groove 52. The loop Ru formed by the wire W is disposed outside in the radial direction.

  The curl guide portion 5A includes a retracting mechanism 53 that retracts the first guide pin 53a. After the wire W is wound around the reinforcing bar S, the retracting mechanism 53 is displaced in conjunction with the operation of the binding portion 7A, and before the timing at which the wire W is wound around the reinforcing bar S, the first guide pin 53a is moved to the wire W. Evacuates from the path of travel.

  The guide 51 includes a first guide portion 54 that regulates the radial position of the loop Ru formed by the wire W wound around the reinforcing bar S, and a loop formed by the wire W wound around the reinforcing bar S. A second guide portion 55 that regulates the position of Ru along the axial direction Ru1 is provided.

  The first guide portion 54 is provided with a wall surface 54a formed by a surface extending along the feed direction of the wire W outside the radial direction of the loop Ru formed by the wire W wound around the reinforcing bar S. When the wire W is wound around the reinforcing bar S, the first guide portion 54 regulates the radial position of the loop Ru formed by the wire W wound around the reinforcing bar S on the wall surface 54a.

  The second guide portion 55 is provided on the introduction side of the wire W, on both sides along the axial direction Ru1 of the loop Ru formed by the wire W wound around the reinforcing bar S, and on the inner side in the radial direction of the loop Ru. A wall surface 55a is provided by a surface rising from the wall surface 54a. When the wire W is wound around the reinforcing bar S, the second guide part 55 regulates the position along the axial direction Ru1 of the loop Ru formed by the wire W wound around the reinforcing bar S on the wall surface 55a. To do.

  As a result, the position of the loop Ru wound around the reinforcing bar S in the axial direction Ru1 of the wire W fed from the curl guide 50 is regulated by the wall surface 55a of the second guide portion 55, and the second guide portion 55 It is guided to the first guide part 54.

  In this example, the first guide portion 54 is fixed to the main body portion 10A of the reinforcing bar binding machine 1A, and the second guide portion 55 is rotatable with the shaft 55b as a fulcrum. Supported by part 54. The second guide portion 55 is configured to be openable and closable in a direction in which the introduction side into which the wire W fed from the curl guide 50 enters is separated from and in contact with the curl guide 50. Thereby, after binding the reinforcing bar S with the wire W, the second guide portion 55 is retracted by the operation of pulling out the reinforcing bar binding machine 1A from the reinforcing bar S, and the operation of pulling out the reinforcing bar binding machine 1A from the reinforcing bar S is facilitated. .

  Next, the structure which attaches a curl to the wire W is demonstrated. The wire W fed by the first feed gear 30L and the second feed gear 30R has at least two points on the radially outer side of the loop Ru formed by the wire W and at least one point inside the two points. By restricting the radial position of the loop Ru formed by the wire W at three points, the wire W is curled.

In this example, with respect to the feed direction of the wire W fed in the forward direction, the second wire guide 4A ₂ provided on the upstream side of the first guide pin 53a, it is provided on the downstream side of the first guide pin 53a At the two points of the second guide pin 53b, the radially outer position of the loop Ru formed by the wire W is regulated. In addition, the position of the inner side in the radial direction of the loop Ru formed by the wire W is regulated by the first guide pin 53a.

  FIG. 5 is an exploded perspective view showing an example of the cutting portion of the present embodiment, and FIG. 6 is a side view showing an example of the cutting portion of the present embodiment. Next, the wire W wound around the reinforcing bar S The cutting part 6A that cuts the line is described.

  The cutting part 6A includes a fixed blade part 60A, a movable blade part 61A that cuts the wire W in cooperation with the fixed blade part 60A, and a transmission mechanism 62A that transmits the operation of the binding part 7A to the movable blade part 61A.

  The fixed blade portion 60A is an example of a blade portion, and includes a shaft portion 600A and an opening 601A through which the wire W passes. The shaft portion 600A has a cylindrical shape, and an end portion along the axial direction is fixed to the support member 650 shown in FIGS. The opening 601A penetrates the shaft portion 600A in a direction orthogonal to the axial direction.

  The movable blade portion 61A is an example of a blade portion, and a movable portion main body 610A, a hole portion 611A inserted into the shaft portion 600A of the fixed blade portion 60A, and a shaft support portion 612A that supports the movable portion main body 610A on the shaft portion 600A. The movable blade 613A for cutting the wire W passing through the opening 601A of the fixed blade portion 60A is provided.

  The hole portion 611A is configured by a circular opening that matches the outer shape of the shaft portion 600A of the fixed blade portion 60A, and penetrates the movable portion main body 610A. When the hole 611A is inserted into the shaft portion 600A of the fixed blade portion 60A, the movable blade portion 61A is attached to the fixed blade portion 60A so as to be rotatable with respect to the fixed blade portion 60A with the shaft portion 600A as a fulcrum.

  The movable blade portion 61A rotates by using the fixed blade portion 60A as a fulcrum, and the movable blade 613A is in sliding contact with one opening end of the opening 601A of the fixed blade portion 60A. Thereby, a shearing force is applied to the wire W passed through the opening 601A of the fixed blade portion 60A, and the wire W is cut.

  Next, a configuration for operating the movable blade portion 61A will be described. The transmission mechanism 62A is an example of a movable member, and includes a first link 620A that receives the operation of the binding portion 7A and a second link 621A that transmits the operation of the first link 620A to the movable blade portion 61A.

  The first link 620A is rotatably supported by a shaft 622A provided on the support member 650. The first link 620A includes a pressed portion 623A that receives the operation of the binding portion 7A at one end with the shaft 622A interposed therebetween. The first link 620A includes a shaft 624A that rotatably supports the second link 621A at the other end with the shaft 622A interposed therebetween.

  The second link 621A is an example of a transmission member. In this example, one end of a long member such as a rod or plate is connected to the movable blade 61A with a shaft (not shown) of the movable blade 61A as a fulcrum. It is connected to be rotatable. The other end of the second link 621A is rotatably connected to the first link 620A with the shaft 624A as a fulcrum.

  In the transmission mechanism 62A, the operation of the binding portion 7A is transmitted to the first link 620A by the transmission member 630, and the first link 620A rotates about the shaft 622A. In the transmission mechanism 62A, the rotation operation about the shaft 622A of the first link 620A is transmitted to the movable blade portion 61A by the second link 621A, and the movable blade portion 61A rotates about the fixed blade portion 60A. Thereby, the wire W passed through the opening 601A of the fixed blade portion 60A is cut by the movable blade portion 61A.

  7 and 8 are configuration diagrams showing an example of the binding portion. Next, the binding portion 7A for binding the reinforcing bars S with the wires W will be described.

  The binding portion 7A includes a gripping portion 70 that grips the wire W, and a bending portion 71 that bends one end WS side and the other end WE side of the wire W toward the rebar S side.

  The gripping unit 70 includes a fixed gripping member 70C, a first movable gripping member 70L, and a second movable gripping member 70R. The first movable gripping member 70L and the second movable gripping member 70R are arranged in the left-right direction via the fixed gripping member 70C. Specifically, the first movable gripping member 70L is disposed on one side along the axial direction of the wire W to be wound with respect to the fixed gripping member 70C, and the second movable gripping member 70R is on the other side. It is arranged on the side.

  In the first movable gripping member 70L and the fixed gripping member 70C, the wire W passes between the first movable gripping member 70L and the distal end side of the fixed gripping member 70C. Further, in the second movable gripping member 70R and the fixed gripping member 70C, the wire W passes between the second movable gripping member 70R and the distal end side of the fixed gripping member 70C.

  The fixed gripping member 70C includes a shaft 76 that rotatably supports the first movable gripping member 70L and the second movable gripping member 70R. The fixed gripping member 70C supports the rear end sides of the first movable gripping member 70L and the second movable gripping member 70R with a shaft 76. As a result, the first movable gripping member 70L opens and closes in a direction in which the distal end side is separated from and in contact with the fixed gripping member 70C by a rotational operation with the shaft 76 as a fulcrum. Further, the second movable gripping member 70R opens and closes in a direction in which the distal end side is separated from and in contact with the fixed gripping member 70C by a rotation operation with the shaft 76 as a fulcrum.

  The bent portion 71 has a shape that covers the periphery of the gripping portion 70, and is provided so as to be movable along the axial direction of the binding portion 7A. The bending portion 71 includes an opening / closing pin 71a for opening and closing the first movable gripping member 70L and the second movable gripping member 70R. The first movable gripping member 70L and the second movable gripping member 70R include an opening / closing guide hole 77 that opens and closes the first movable gripping member 70L and the second movable gripping member 70R by the operation of the opening / closing pin 71a.

  The open / close pin 71 a passes through the inside of the bent portion 71 and is orthogonal to the moving direction of the bent portion 71. The open / close pin 71 a is fixed to the bent portion 71 and moves in conjunction with the movement of the bent portion 71.

  The open / close guide hole 77 extends along the moving direction of the open / close pin 71a, and converts the linear movement of the open / close pin 71a into an open / close operation by rotation of the second movable gripping member 70R with the shaft 76 as a fulcrum. An opening / closing part 78 is provided. The opening / closing guide hole 77 has a first standby portion 770 extending along a moving direction of the bent portion 71 and a second standby distance extending along a moving direction of the bent portion 71. Standby unit 771. The opening / closing part 78 extends from one end of the first standby part 770 by being bent obliquely outward, and is connected to the second standby part 771. 7A and 7B show the open / close guide hole 77 provided in the second movable gripping member 70R, but the first movable gripping member 70L also has a symmetrical shape. A similar opening / closing guide hole 77 is provided.

  As shown in FIG. 7A, the gripping portion 70 is moved in the direction in which the first movable gripping member 70L and the second movable gripping member 70R are separated from the fixed gripping member 70C, thereby A feed path through which the wire W passes is formed between the gripping member 70L and the fixed gripping member 70C and between the second movable gripping member 70R and the fixed gripping member 70C.

  The wire W fed by the first feed gear 30L and the second feed gear 30R passes between the fixed gripping member 70C and the second movable gripping member 70R and is guided to the curl guide portion 5A. The wire W that is curled by the curl guide portion 5A passes between the fixed gripping member 70C and the first movable gripping member 70L.

  In the reinforcing bar binding machine 1A, when the side on which the curl guide portion 5A shown in FIG. 1 is provided is the front side, the bent portion 71 moves in the front direction indicated by the arrow F in FIG. When the opening / closing portion 78 of the opening / closing guide hole 77 is pressed, the first movable gripping member 70L and the second movable gripping member 70R move in a direction approaching the fixed gripping member 70C by a rotation operation with the shaft 76 as a fulcrum. .

  As shown in FIG. 7B, the wire W is moved between the first movable gripping member 70L and the fixed gripping member 70C by moving the first movable gripping member 70L closer to the fixed gripping member 70C. Grasped. Further, when the second movable gripping member 70R moves in a direction approaching the fixed gripping member 70C, the wire W is placed in a portion where the wire W passes between the second movable gripping member 70R and the fixed gripping member 70C. An interval that can be sent is formed.

  The bending portion 71 includes a bending portion 71b1 that presses one end WS side of the wire W gripped between the first movable gripping member 70L and the fixed gripping member 70C. The bending portion 71 includes a bending portion 71b2 that presses the other end WE of the wire W gripped between the second movable gripping member 70R and the fixed gripping member 70C.

  The bending portion 71 moves in the forward direction indicated by the arrow F, so that one end portion WS side of the wire W gripped by the fixed gripping member 70C and the first movable gripping member 70L is pushed by the bending portion 71b1, and the reinforcing bar Bend to the S side. Further, the bending portion 71 moves in the forward direction indicated by the arrow F so that the other end WE side of the wire W passed between the fixed gripping member 70C and the second movable gripping member 70R is bent at the bending portion 71b1. Press and bend to the reinforcing bar S side.

  As shown in FIG. 2, the binding unit 7 </ b> A includes a length regulating unit 74 that regulates the position of one end WS of the wire W. The length restricting portion 74 is configured by providing a member with which one end portion WS of the wire W is abutted on the feeding path of the wire W that has passed between the fixed gripping member 70C and the first movable gripping member 70L. .

  Further, the bundling portion 7 </ b> A is a rotation restriction that restricts the rotation of the rotation shaft 82, the movable member 83 that is an operated member that is displaced by the rotation operation of the rotation shaft 82, and the movable member 83 that is interlocked with the rotation operation of the rotation shaft 82. A member 84 is provided. The reinforcing bar binding machine 1A includes a drive unit 8A that drives the binding unit 7A. The drive unit 8A includes a motor 80 and a speed reducer 81 that performs deceleration and torque amplification. The rotating shaft 82 is driven by the motor 80 via the speed reducer 81.

  The rotating shaft 82 and the movable member 83 are configured so that the rotational operation of the rotating shaft 82 is performed along the rotating shaft 82 of the movable member 83 by the screw portion 82 a provided on the rotating shaft 82 and the nut portion provided on the movable member 83. Converted to move to.

  FIG. 9 is a side view showing the main configuration of the movable member. The movable member 83 has a cylindrical shape, and a nut portion that engages with the screw portion 82a of the rotating shaft 82 is formed therein. The movable member 83 is integrally provided with the above-described bent portion 71 at one end, and the bent portion 71 moves in the front-rear direction when the movable member 83 moves in the front-rear direction.

  The movable member 83 is provided with an operation opening 800 at one end where the bent portion 71 is provided. From the operation opening 800, the fixed gripping member 70C, the first movable gripping member 70L, and the second movable gripping member 70R described above. The binding portion 7A having the is inserted. In the movable member 83, an operation opening groove 801 in which the first movable gripping member 70L and the second movable gripping member 70R are put in and out is continuously provided from the operation opening 800 at a portion facing the side surface.

  The movable member 83 and the bending portion 71 and the gripping portion 70 supported by the bending portion 71 are locked to the rotation restricting member 84 in the operation range where the gripping portion 70 grips the wire W and the bending portion 71 bends the wire W. As a result, the rotation restricting member 84 moves in the front-rear direction while the rotation operation is restricted. In addition, the movable member 83, the bent portion 71, and the gripping portion 70 are rotated by the rotation operation of the rotating shaft 82 by being removed from the locking of the rotation regulating member 84.

  In the gripping portion 70, the fixed gripping member 70 </ b> C, the first movable gripping member 70 </ b> L, and the second movable gripping member 70 </ b> R that grip the wire W rotate in conjunction with the rotation of the movable member 83 and the bending portion 71.

  The retraction mechanism 53 of the first guide pin 53a described above is configured by a link mechanism that converts the movement of the movable member 83 in the front-rear direction into the displacement of the first guide pin 53a. In the cutting portion 6A, the movement of the movable member 83 is transmitted to the transmission mechanism 62A by the transmission member 630A, and the movable blade portion 61A rotates.

  Next, the shape of the reinforcing bar binding machine 1A will be described. Reinforcing bar binding machine 1A is a form which an operator holds and uses, and is provided with main part 10A and handle part 11A. In the reinforcing bar binding machine 1A, the curl guide 50 and the guide 51 of the curl guide 5A described above are provided at the front end of the main body 10A. Further, in the reinforcing bar binding machine 1A, the wire feeding part 3A, the cutting part 6A, the driving part 8A, the binding part 7A driven by the driving part 8A, and the like are housed in the main body part 10A. Furthermore, in the reinforcing bar binding machine 1A, the handle portion 11A extends in one direction from the main body portion 10A. Further, in the reinforcing bar binding machine 1A, the magazine 2A is provided in front of the handle portion 11A.

  The reinforcing bar binding machine 1A includes a housing 100 that constitutes an exterior. The casing 100 is a molded product such as a resin and constitutes the exterior of the main body 10A and the handle 11A, and the main body 10A and the handle 11A are integrally provided.

  Next, the operation unit of the reinforcing bar binding machine 1A will be described. In the reinforcing bar binding machine 1A, a trigger 12A is provided on the front side of the handle portion 11A, and the control unit 14A controls the feed motor 33 and the motor 80 according to the state of the switch 13A pressed by the operation of the trigger 12A. A battery 15A is detachably attached to the lower portion of the handle portion 11A.

  FIG. 10 is a front perspective view showing an example of a configuration of a main part of the reinforcing bar binding machine according to the present embodiment. Next, a path through which foreign matter can enter the reinforcing bar binding machine 1A will be described.

  The reinforcing bar binding machine 1A includes an opening 101 through which the wire W passes through the operation of binding the reinforcing bar S by the wire W. The opening 101 is configured by an opening provided at the front end of the main body 10 and between the curl guide 50 and the guide 51 of the curl guide 5A.

  In addition, the reinforcing bar binding machine 1A includes an operation space 102 in which the gripping part 70 and the bending part 71 of the binding part 7A operate. The operation space 102 is configured by a space provided behind the opening 101 inside the main body 10.

  Next, the structure which suppresses the penetration | invasion of the foreign material from the opening part 101 and the operation space 102 to the inside of the reinforcing bar binding machine 1A will be described. FIG. 11 is a configuration diagram illustrating an example of a sealing member in the binding portion. First, a configuration for suppressing entry of foreign matter into the binding portion 7A will be described.

  The binding unit 7A includes a rotating body sealing member 802 on the rotating shaft 82. The rotating body sealing member 802 is configured by a ring-shaped member such as elastic rubber or silicon. The rotating body sealing member 802 is fitted into a groove portion 803 provided at a predetermined position of the rotating shaft 82 along the circumferential direction over the entire circumference.

  As shown in FIG. 11A, the rotary body sealing member 802 has a D-shaped cross section, the flat surface side is the outer periphery, the curved surface side is fitted toward the groove portion 803, and a screw provided on the rotary shaft 82. It is arranged in front of the portion 82a (the binding portion 7A side). Accordingly, the rotating body sealing member 802 has a planar portion in contact with the inner surface of the movable member 83. In addition, the rotating body sealing member 802 is provided on the side of the operation opening 800 of the movable member 83 from the groove portion 803 to which the rotating body sealing member 802 is attached, and on the outer peripheral surface of the rotating shaft 82 and the inner peripheral surface of the movable member 83. A storage groove 804 for accumulating foreign matter sealed with the member 802 may be provided.

  When the movable member 83 is inserted into the rotating shaft 82, the rotating body sealing member 802 is crushed by a predetermined amount as shown in FIG. 11B, and comes into contact with the inner surface of the movable member 83. The crushing amount of the rotating body sealing member 802 is, for example, about 0.1 mm to 0.7 mm. Thereby, airtightness is maintained in the location where the rotary body sealing member 802 is provided without increasing the load on the rotary shaft 82. Moreover, since the site | part which contacts the movable member 83 of the rotary body sealing member 802 is a plane, the contact area with respect to the movable member 83 of the rotary body sealing member 802 increases compared with the case of a point contact. Thereby, airtightness is improved more.

  Further, the rotating body sealing member 802 is provided at a position that is not exposed to the operation opening groove 801 within the movable range of the movable member 83 when the movable member 83 moves in the front-rear direction with respect to the rotation shaft 82. That is, as shown in FIG. 7A, even when the movable member 83 moves to a predetermined position in the direction of the arrow R, the rotating body sealing member is prevented so that the rotating body sealing member 802 is not exposed to the operation opening groove 801. A mounting position 802 is set.

  Thereby, it can suppress that foreign materials, such as dust, penetrate | invade into the inside of the movable member 83 and the rotating shaft 82 exceeding the rotary body sealing member 802. Accordingly, it is possible to suppress the occurrence of malfunction due to foreign matters entering the movable member 83 and the screw portion 82a of the rotating shaft 82.

  Next, the structure which suppresses the penetration | invasion of the foreign material from the moving path of the transmission mechanism 62A of the cutting part 6A to the inside of the reinforcing bar binding machine 1A will be described. The cutting part 6 </ b> A has a movable blade part 61 </ b> A provided in the operation space 102. In order to transmit the driving force to the movable blade portion 61A, the second link 621A of the transmission mechanism 62A extends from the inside of the main body portion 10A to the movable blade portion 61A. Therefore, the main body portion 10A includes an introduction portion 10A1 through which the second link 621A is passed along the movement path of the second link 621A.

  The second link 621A of the transmission mechanism 62A is an operation of rotating the movable blade portion 61A and moves in the longitudinal direction along the front-rear direction that is the main direction, and along the vertical direction that is a sub-direction different from the main direction. Move also in the short direction. Therefore, the introduction portion 10A1 through which the second link 621A is passed is configured with an opening larger than the cross-sectional shape of the second link 621A. Therefore, a sealing portion 810 having a configuration for following the movement of the second link 621A along the short direction is provided.

  FIG. 12 is a configuration diagram illustrating an example of a sealing portion in the movement path of the transmission mechanism. The main body portion 10A includes a sealing portion 810 on the moving path of the transmission mechanism 62A. As shown in FIGS. 5 and 6, the sealing unit 810 includes a pair of movable sealing members 811, a pair of guide members 812 that guide the movement of the movable sealing member 811, the movable sealing member 811, and the guide member. A cover member 813 for supporting 812 is provided.

  The movable sealing member 811 is an example of a sealing member, and includes a groove portion 811a having a width corresponding to the length of the second link 621A in the short direction. The movable sealing member 811 connects the groove 811a to one side of the movable sealing member 811 in order to facilitate attachment to the second link 621A. The pair of movable sealing members 811 have the same shape, and an opening 811b that matches the cross-sectional shape of the second link 621A is formed by overlapping the opening of the groove 811a in the opposite direction. The pair of movable sealing members 811 are attached to the second link 621A by sandwiching the second link 621A with the groove 811a with the opening of the groove 811a reversed. The opening 811b is shaped to allow movement in the longitudinal direction, which is the main direction of movement of the second link 621A that rotates the movable blade portion 61A.

  The guide member 812 includes a guide hole 812a along the short direction of the second link 621A. The pair of guide members 812 are attached to the cover member 813 with an interval between the two movable sealing members 811 that are overlapped. The cover member 813 is fixed to the support member 650 with a screw 813a.

  The cover member 813 has a pair of movable seals between the pair of guide members 812 by aligning the positions of the openings 811b formed by overlapping the pair of movable seal members 811 and the guide holes 812a of the guide member 812. A member 811 is movably attached. The movable sealing member 811 is movable along the short direction of the second link 621A indicated by the arrow Q in FIG. The cover member 813 has a shape that covers the outer peripheries of the movable sealing member 811 and the guide member 812, and foreign matter such as dust is prevented from entering the movable sealing member 811 and the guide member 812.

  The pair of movable sealing members 811 move in the arrow Q direction following the movement of the second link 621A in the short direction. The guide holes 812a of the pair of guide members 812 are sealed by the pair of movable sealing members 811 except for the opening 811b through which the second link 621A passes, and even if the movable sealing member 811 moves in the arrow Q direction. The state where the guide hole 812a is sealed by the movable sealing member 811 is maintained. In the present embodiment, the second link 621A is plate-shaped, and the sub-direction indicated by the arrow Q is 1 along the long side in the cross-sectional shape along the short direction of the second link 621A. Direction. On the other hand, the sub-direction is not limited to one direction. For example, the sub-direction indicated by the arrow Q is a direction along the long side in the cross-sectional shape along the short direction of the second link 621A. The length may be both in the direction along the short side. In such a case, the pair of guide members 812 and the cover so that the pair of movable sealing members 811 can move in one sub-direction indicated by an arrow Q and in another sub-direction orthogonal to the main direction and the one sub-direction. You may make it guide with the member 813. FIG.

<Operation example of reinforcing bar binding machine of this embodiment>
FIG. 13 is an operation explanatory view showing details of an example of the operation of gripping and twisting the wire. Next, referring to each drawing, the reinforcing bar binding machine 1A of the present embodiment is used to connect two reinforcing bars S. The operation of binding with the wire W will be described.

  In the reinforcing bar binding machine 1A, the wire W is sandwiched between the first feed gear 30L and the second feed gear 30R, and the tip of the wire W is connected to the first feed gear 30L and the second feed gear 30R. The state positioned between the fixed position of the cutting portion 6A and the fixed blade portion 60 is the standby state. Further, in the rebar binding machine 1A, in the standby state, as shown in FIG. 7A, the first movable gripping member 70L opens with respect to the fixed gripping member 70C, and the second movable gripping member 70R is fixed gripping member. It is in the open state with respect to 70C.

  When the reinforcing bar S is inserted between the curl guide 50 and the guide 51 of the curl guide portion 5A and the trigger 12A is operated, the feed motor 33 is driven in the forward rotation direction, and the first feed gear 30L rotates forward. At the same time, the second feed gear 30R rotates normally following the first feed gear 30L. Thereby, the two wires W sandwiched between the first feed gear 30L and the second feed gear 30R are fed in the forward direction.

To the feed direction of the wire W fed in the forward direction, the first wire guide 4A ₁ is provided on the upstream side of the wire feed portion 3A, that the second wire guide 4A ₂ is provided on the downstream side, two The wires W are sent in parallel.

When the wire W is fed in the forward direction, the wire W passes between the fixed gripping member 70C and the second movable gripping member 70R and passes through the guide groove 52 of the curl guide 50 of the curl guide portion 5A. Thereby, the wire W includes a second wire guide 4A _2, at three points of the first guide pin 53a and the second guide pin 53b of the curl guide 50, curl to be wound around the reinforcing bars S Attached.

  The wire W fed out from the curl guide 50 is guided between the fixed gripping member 70C and the first movable gripping member 70L by the guide guide 51. Then, when the tip of the wire W is sent to a position where it abuts against the length restricting portion 74, the drive of the feed motor 33 is stopped. Thereby, the wire W is wound around the rebar S in a loop shape as shown in FIG.

  After stopping the feeding of the wire W, the motor 80 is driven in the forward rotation direction, so that the motor 80 moves the movable member 83 in the arrow F direction which is the forward direction. That is, in the movable member 83, the rotation operation linked to the rotation of the motor 80 is regulated by the rotation regulating member 84, and the rotation of the motor 80 is converted into a linear movement. As a result, the movable member 83 moves in the forward direction.

  In conjunction with the movement of the movable member 83 in the forward direction, the bent portion 71 moves in the forward direction without rotating together with the movable member 83. When the bent portion 71 moves in the forward direction, the open / close pin 71a passes through the open / close portion 78 of the open / close guide hole 77 as shown in FIG.

  As a result, the first movable gripping member 70L moves in a direction approaching the fixed gripping member 70C by a rotation operation with the shaft 76 as a fulcrum. Therefore, the one end WS side of the wire W is gripped between the first movable gripping member 70L and the fixed gripping member 70C. Further, the second movable gripping member 70R moves in a direction approaching the fixed gripping member 70C by a rotation operation with the shaft 76 as a fulcrum. Therefore, an interval at which the wire W can be fed is formed at a portion where the wire W passes between the second movable gripping member 70R and the fixed gripping member 70C.

  Further, when the movable member 83 moves in the forward direction, the operation of the movable member 83 is transmitted to the retracting mechanism 53, and the first guide pin 53a is retracted.

  After the movable member 83 is advanced to the position where the wire W is gripped by the opening / closing operation of the first movable gripping member 70L and the second movable gripping member 70R, the rotation of the motor 80 is temporarily stopped and the feed motor 33 is rotated in reverse. Drive in the direction. As a result, the first feed gear 30L is reversely rotated, and the second feed gear 30R is reversely driven following the first feed gear 30L.

  Therefore, the wire W clamped between the first feed gear 30L and the second feed gear 30R is sent in the reverse direction. In the operation of sending the wire W in the reverse direction, the wire W is wound so as to be in close contact with the reinforcing bar S as shown in FIG.

  After the wire W is wound around the reinforcing bar S and driving of the feed motor 33 in the reverse rotation direction is stopped, the movable member 83 is moved in the forward direction by driving the motor 80 in the forward rotation direction. The movement of the movable member 83 in the forward direction is transmitted to the cutting portion 6A by the transmission mechanism 62A, whereby the movable blade portion 61A rotates, and the wire W gripped by the second movable gripping member 70R and the fixed gripping member 70C. The other end portion WE side is cut by the operation of the fixed blade portion 60A and the movable blade portion 61A.

  When the reinforcing bar S is bound with two wires W as in this example, the diameter of the wire W can be changed as long as a binding strength equivalent to that when the reinforcing bar S is bound with one wire as in the prior art is obtained. It can be made thinner. For this reason, the wire W can be easily bent and the wire W can be brought into close contact with the reinforcing bar S with a small force. Therefore, the wire W can be reliably wound around the reinforcing bar S with a small force. Moreover, the load at the time of cutting the wire W can be reduced. Along with this, it is possible to reduce the size of each motor of the reinforcing bar binding machine 1A and to reduce the size of the entire main body by reducing the size of the mechanical part. In addition, power consumption can be reduced by downsizing the motor and reducing the load.

  After the wire W is cut, the movable member 83 is further moved in the forward direction, whereby the bent portion 71 is moved in the forward direction integrally with the movable member 83 as shown in FIG. One end WS side of the wire W gripped by the fixed gripping member 70C and the first movable gripping member 70L by the bending portion 71 moving in a direction approaching the reinforcing bar S that is the forward direction indicated by the arrow F. Is pressed to the reinforcing bar S side by the bending portion 71b1 and bent to the reinforcing bar S side with the gripping position as a fulcrum. As the bent portion 71 moves further forward, the one end WS side of the wire W is held between the first movable gripping member 70L and the fixed gripping member 70C.

  Further, when the bending portion 71 moves in a direction approaching the reinforcing bar S which is the forward direction indicated by the arrow F, the other end portion of the wire W gripped by the fixed gripping member 70C and the second movable gripping member 70R. The WE side is pressed to the rebar S side by the bending portion 71b2, and bent to the rebar S side with the gripping position as a fulcrum. As the bending portion 71 moves further forward, the wire W is supported between the second movable gripping member 70R and the fixed gripping member 70C.

  After the end portion of the wire W is bent to the reinforcing bar S side, the motor 80 is further driven in the forward rotation direction, so that the motor 80 further moves the movable member 83 in the arrow F direction which is the forward direction. When the movable member 83 moves to a predetermined position in the direction of the arrow F, the movable member 83 comes off from the locking of the rotation restricting member 84, and the restriction of rotation by the rotation restricting member 84 of the movable member 83 is released.

  As a result, the motor 80 is further driven in the forward rotation direction, whereby the gripping portion 70 gripping the wire W rotates integrally with the bent portion 71, and the wire W is turned as shown in FIG. Twist.

  After the wire W is twisted, the motor 80 is driven in the reverse rotation direction, so that the motor 80 moves the movable member 83 in the backward direction indicated by the arrow R. That is, in the movable member 83, the rotation operation linked to the rotation of the motor 80 is regulated by the rotation regulating member 84, and the rotation of the motor 80 is converted into a linear movement.

  As a result, the movable member 83 moves backward. In conjunction with the movement of the movable member 83 in the backward direction, the first movable gripping member 70L and the second movable gripping member 70R are displaced in a direction away from the fixed gripping member 70C, and the gripping portion 70 releases the wire W. .

  14 to 15 are operation explanatory views showing details of the operation of the sealing portion in the movement path of the transmission mechanism. Next, details of the operation of the sealing portion 810 described above will be described.

  In the cutting part 6A, the operation of the movable member 83 is transmitted to the first link 620A of the transmission mechanism 62A by the transmission member 630, and the transmission member 630 moves in the direction of arrow F, whereby the pressed part of the first link 620A. 623A is pressed, and the first link 620A rotates in the direction of the arrow C11 with the shaft 622A as a fulcrum.

  In the cutting part 6A, the rotation operation about the shaft 622A of the first link 620A is transmitted to the movable blade part 61A by the second link 621A, and the movable blade part 61A uses the fixed blade part 60A as a fulcrum in the direction of the arrow C1. Rotate to.

  When the second link 621A moves in the arrow Q1 direction as shown in FIGS. 14A and 15A by the operation of rotating the movable blade portion 61A, the pair of movable sealing members 811 are moved to the second direction. Following the movement of the link 621A in the short direction, the link 621A moves in the arrow Q1 direction.

  When the second link 621A moves in the arrow Q2 direction as shown in FIGS. 14B and 15B by the operation of rotating the movable blade portion 61A, the pair of movable sealing members 811 are moved to the second direction. Following the movement of the link 621A in the short direction, the link 621A moves in the arrow Q2 direction.

  The guide holes 812a of the pair of guide members 812 are sealed by a pair of movable sealing members 811 except for the opening 811b through which the second link 621A passes, and the movable sealing member 811 moves in the directions of arrows Q1 and Q2. However, the state where the guide hole 812a is sealed by the movable sealing member 811 is maintained. Accordingly, the sealing portion 810 is provided in the moving path of the second link 621A of the transmission mechanism 62A that is a movable member, and foreign matter such as dust enters the body portion 10A beyond the sealing portion 810. Can be suppressed.

<Modification of the reinforcing bar binding machine of the present embodiment>
FIGS. 16-17 is a block diagram which shows the other example of the sealing part in the movement path | route of a transmission mechanism, Next, other embodiment of a sealing part is described. The sealing portion 820 shown in FIGS. 16 and 17 is configured such that the moving direction of the movable part is restricted to one direction, and therefore does not follow the movement of the movable part.

  First, the transmission mechanism 62B that moves the movable blade portion 61A will be described. The transmission mechanism 62B transmits the first link 620B that receives the operation of the binding portion 7A and the operation of the first link 620B to the movable blade portion 61A. A second link 625B, a connecting link 626B, and a third link 627B are provided.

  The first link 620B is rotatably supported by a shaft 622B provided on the support member 650. The first link 620B includes a pressed portion 623B that receives the operation of the binding portion 7A at one end across the shaft 622B. The first link 620B includes a shaft 624B that rotatably supports the second link 625B at the other end with the shaft 622B interposed therebetween.

  One end of the second link 625B is rotatably connected to the first link 620B with the shaft 624B as a fulcrum. The second link 625B includes a shaft 628B that rotatably supports the connection link 626B at the other end.

  One end of the connecting link 626B is rotatably connected to the second link 625B with the shaft 628B as a fulcrum. Further, the connecting link 626B includes a shaft 629B that rotatably supports the third link 627B at the other end.

  One end of the third link 627B is rotatably connected to the connection link 626B with the shaft 629B as a fulcrum. The other end of the third link 627B is rotatably connected to the movable blade portion 61A with a shaft (not shown) of the movable blade portion 61A as a fulcrum.

  The sealing portion 810B is provided in the movement path of the transmission mechanism 62B and includes a guide hole 820B that guides the connection link 626B. The guide hole 820B has a shape in which the connecting link 626B can slide in the longitudinal direction, and penetrates the sealing portion 810B. Note that a ring-shaped sealing member such as an O-ring may be provided on the inner surface of the guide hole 820B.

  In the transmission mechanism 62 </ b> B, the second link 625 </ b> B and the third link 627 </ b> B move in both the longitudinal direction and the lateral direction by rotating the movable blade portion 61 </ b> A. On the other hand, the connection link 626B is guided in a state in which movement in the short direction is restricted by the guide hole 820B of the sealing portion 810B, and thus slides along the longitudinal direction. Thereby, the sealing part 810B does not need a configuration that follows the movement of the connection link 626B.

DESCRIPTION OF SYMBOLS 1A ... Rebar binding machine, 2A ... Magazine, 20 ... Reel, 3A, 3B, 3C ... Wire feed part, 30L ... 1st feed gear (feed member), 31L ... Tooth part, 32L ... groove part, 30R ... second feed gear (feed member), 31R ... tooth part, 32R ... groove part, 33 ... feed motor (motor), 33a ... Small gear, 33b ... large gear, 34 ... driving force transmission mechanism, 34a ... feeding small gear, 36 ... displacement member, 4A ₁ ... first wire guide, 4A ₂ ... Second wire guide, 5A ... curl guide part, 50 ... curl guide, 51 ... guide guide, 53 ... retraction mechanism, 53a ... first guide pin, 53b ... first 2 guide pins, 6A ... cutting part, 60A ... fixed blade part (blade part), 600A -Shaft part, 601A ... Opening, 61A ... Movable blade part (blade part), 610A ... Movable part body, 611A ... Hole part, 612A ... Shaft support part, 613A ... Movable Blade, 62A, 62B ... transmission mechanism, 620A ... first link, 621A ... second link, 622A ... shaft, 623A ... pressed portion, 624A ... shaft, 630 ... Transmission member, 7A ... Bundling part, 70 ... Grip part, 70C ... Fixed grip member, 70L ... First movable grip member, 70R ... Second movable grip member, 71 ... bent portion, 71a ... open / close pin, 76 ... shaft, 8A ... drive unit, 80 ... motor, 81 ... reducer, 82 ... rotating shaft, 82a ... -Screw part, 83 ... movable member, 800 ... operation opening, 801 ... operation opening groove, 802 Rotating body sealing member, 803 ... groove portion, 810 ... sealing portion, 811 ... movable sealing member (sealing member), 811a ... groove portion, 811b ... opening, 812 ... Guide member, 812a ... Guide hole, 813 ... Cover member, W ... Wire

Claims (5)

A wire feed section for sending a wire wound around a bundle;
A curl guide portion that constitutes a path for winding the wire sent by the wire feed portion around the bundle;
A cutting section for cutting the wire wound around the bundle;
A bundling section for twisting a wire wound around a bundling object;
The curl guide part includes a main body part provided at one end part,
The cutting portion includes a pair of blade portions that are cut with a wire interposed therebetween, and a transmission member that transmits a driving force for relatively operating the pair of blade portions to the blade portion,
The main body portion has an introduction portion through which the transmission member is passed through a movement path of the transmission member that operates the blade portion provided in a feeding path of a wire that is sent to the curl guide portion by the wire feeding portion. And
A bundling machine comprising: a sealing portion that seals the introduction portion with a sealing member having an opening through which the transmission member passes. The opening is formed in a shape that allows the sealing member to move in the main direction of the transmission member that operates the blade portion,
The sealing portion includes a guide member that guides the displacement of the sealing member in a direction that follows the movement of the transmission member in a sub-direction different from the main direction, and a cover member that holds the guide member. The binding machine according to claim 1. A wire feed section for sending a wire wound around a bundle;
A curl guide portion that constitutes a path for winding the wire sent by the wire feed portion around the bundle;
A cutting section for cutting the wire wound around the bundle;
A bundling section for twisting a wire wound around a bundling object;
The curl guide part includes a main body part provided at one end part,
The bundling portion is
A rotating shaft having a threaded portion on the outer periphery;
A movable member that is screwed onto the rotating shaft and covers at least a part of the outer peripheral surface of the rotating shaft;
A gripping portion provided in an operation opening formed on one end side of the movable member, and capable of twisting a wire wound around a bundle;
Between the outer peripheral surface of the rotating shaft and the inner peripheral surface of the movable member, and between the screw portion of the rotating shaft and the operation opening of the movable member, the outer peripheral surface of the rotating shaft and the movable member A bundling machine comprising a rotating body sealing member that seals between the inner peripheral surface of the binder. The binding machine according to claim 3, wherein the rotation sealing member is ring-shaped and is fitted into a groove provided on an outer peripheral surface of the rotation shaft. Storage that accumulates foreign matter sealed by the rotary sealing member on one of the outer peripheral surface of the rotary shaft and the inner peripheral surface of the movable member, which is closer to the operation opening of the movable member than the rotary sealing member. The binding machine according to claim 3 or 4, further comprising a groove.

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