JPH09240927A - Wire reel for reinforcement binding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate installation to a reinforcement binding machine and improve operability of the reinforcement binding machine. SOLUTION: It has a cylindrical part 14 to wind a wore 12 and a pair of collar parts 16 concentricity formed integral from both end surfaces of this cylindrical part 14 and respectively formed flush with the both end surfaces of the cylindrical part 14. It is furnished with a shaft support part 15 to be shaft supported in a rotational center shaft of an installation part formed on the end surface of the cylindrical part 14 and formed on a side surface of a reinforcement binding machine and a side surface recessed part 17 formed in the end surface of the cylindrical part 14 on the opposite side of this shaft support part 15 and from which a head end part of the rotational center shaft of the reinforcement binding machine. An engagement part 32 formed on a bottom surface central part of the side surface recessed part 17 and the end part of the shaft support part 15 and with which the head end part of the rotational center shaft is engaged is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire reel for a reinforcing bar binding machine, which is attached to a binding machine for binding crossing portions of reinforcing bars with a metal wire and continuously feeds the metal wire.

[0002]

2. Description of the Related Art A conventional wire reel for a reinforcing bar binding machine is a wire reel in which a metal wire is wound and accommodated, as disclosed in Japanese Utility Model Laid-Open No. 6-80765 and Japanese Utility Model Laid-Open No. 6-78507. , Is inserted in the radial direction of the wire reel from the rear end of the reinforcing bar binding machine and mounted on the mounting portion of the reinforcing bar binding machine. Therefore, a shaft hole that is axially supported by the mounting shaft of the reinforcing bar binding machine is formed in the center of both side surfaces of the wire reel. The part where the shaft hole is formed slightly protrudes from the side surface of the wire reel so that the flange part that is the side surface does not slide on the inner surface of the attachment part of the iron and metal binding machine when attached to the attachment part of the binding machine. Is formed in.

[0003]

In the case of the above conventional technique, since the wire reel is inserted into the rear end of the reinforcing bar binding machine, the handle portion of the reinforcing bar binding machine is formed on the lower surface. Therefore, when binding the reinforcing bars in the back and the binding of the reinforcing bars on the floor when the reinforcing bars are in two layers, the handle part becomes an obstacle and the work position and posture become unreasonable. There was a problem of poor operability. In addition, the wire reel must be mounted so as to be inserted into the mounting portion of the reinforcing bar binding machine in the radial direction, and due to other restrictions, the mounting position of the wire reel is limited to the rear end portion, and the mounting of the wire reel is also limited to that. The insertion was troublesome.

The present invention has been made in view of the above problems of the prior art, and provides a wire reel for a reinforcing bar binding machine, which can be easily attached to the reinforcing bar binding machine and which also improves the operability of the reinforcing bar binding machine. The purpose is to

[0005]

SUMMARY OF THE INVENTION According to the present invention, a tubular portion around which a wire is wound is integrally and concentrically formed from both end surfaces of the tubular portion, and is flush with both end surfaces of the tubular portion. And a pair of flanges, a shaft support formed on one end surface of the tubular part and pivotally supported by a rotation center shaft of a mounting part formed on a side surface of the reinforcing bar binding machine, and a side opposite to the shaft support. Of the side surface recess formed on the end surface of the tubular portion and protruding from the tip of the rotation center shaft of the reinforcing bar binding machine, and the center of the side surface recess formed on the end surface of the shaft support portion of the rotation center shaft. It is a wire reel for a reinforcing bar binding machine, which is provided with an engaging portion with which a tip portion engages.

Further, a locking projection is formed at the tip of the center axis of rotation of the reinforcing bar binding machine, and a guide groove, which is a guide portion through which the locking projection is inserted, is formed in the axial support portion of the wire reel along the axial direction. An engaging portion with which the locking projection engages is formed at one end surface of the shaft support portion and at the center of the bottom surface of the side surface recess. Further, the rotation center shaft of the reinforcing bar binding machine is biased inward, and the shaft support portion of the wire reel is formed with an inclined surface over which the locking projection at the tip of the rotation center shaft overcomes the biasing force. The engaging portion, which is a recess, is formed at the end of the slope.

Further, according to the present invention, a through hole such as a slit is formed in a part of the cylindrical portion, and one end of the wire is inserted into the through hole, and the inserted portion has a diameter larger than that of the through hole. A wire reel for a reinforcing bar binding machine, wherein the wire reel is formed as a spiral wire portion wound around a wire, and the spiral wire portion is engaged with a peripheral portion of the through hole.

The wire reel for a reinforcing bar binding machine according to the present invention comprises:
It is axially mounted on the rotation center shaft formed on the side surface of the reinforcing bar binding machine, the tip of this rotation center shaft is located in the side surface recess, and there is no part protruding to the outside. It securely engages the engaging portion and can be easily attached and detached.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, a wire rod 10 for a reinforcing bar binding machine according to this embodiment has a cylindrical portion 14 around which wires 12 are wound in an aligned state, and is concentric integrally with both end surfaces of the cylindrical portion 14. Formed cylindrical portion 1
4 and the pair of collar portions 16 formed flush with each other. On one end surface of the tubular portion 14, a shaft support portion 15 pivotally mounted on a rotation center shaft 22 of a mounting portion 24 formed on the side surface of the reinforcing bar binding machine 20 shown in FIG. 4 and the shaft support portion 15 are provided. The reinforcing bar binding machine 2 is formed on the end surface of the tubular portion 14 on the opposite side.
It has a side surface recess 17 from which the tip of the rotation center shaft 22 of 0 projects. The rotation center shaft 22 has a rotation sleeve 25 at its tip, and the rotation sleeve 25 has a cylindrical portion 14
Are engaged with each other to rotate the wire rod 10 for the reinforcing bar binding machine with respect to the rotation center shaft 22. Further, the central portion of the bottom surface of the side surface recessed portion 17 is the end surface portion of the shaft support portion 15, and the engagement portion 18 with which the distal end portion of the rotary sleeve 25 of the rotation center shaft 22 is engaged is formed in the central portion thereof.

The shaft supporting portion 15 is, as shown in FIGS.
A pair of guide grooves 26 facing each other in the axial direction are provided on the side surfaces of the cylindrical through hole, and the reinforcing bar binding machine 20 is provided along the guide grooves 26.
The locking projection 28 of the rotary sleeve 25 of the rotation center shaft 22 is inserted. Further, on the engaging portion 18 at the end portion of the shaft support portion 15 on the side surface recessed portion 17 side, the slope 30 over which the locking projection 28 at the tip of the rotation center shaft 22 of the reinforcing bar binding machine 20 rides, and the outside of the slope 30 are provided. A concave groove-shaped engagement groove portion 32 formed in a step shape is formed at a certain upper end portion. In addition, a slit 33 that engages the end portion of the wire 12 is formed on the side surface of the tubular portion 14, and the spiral portion 13 of the end portion of the wire 12 engages with the rear surface side of the slit 33 as shown in FIG. Combined, wire 12
The end of the wire does not come off from the wire reel 10 during use.

The rotation center shaft 22 of the reinforcing bar binding machine 20 has a mounting recess 4 formed in a mounting portion 24 on a side surface of the reinforcing bar binding machine 20.
A tip end of the rotation center shaft 22 is constantly urged in a direction of being pulled inward of the reinforcing bar binding machine 20 by a coil spring 34 that is concentrically provided and protrudes from the center of the reinforcing bar binding machine 20. As a result, the wire reel 10 is always attracted to the mounting recess 40 side of the reinforcing bar binding machine 20 in the mounted state by the locking projection 28.

As shown in FIG. 4, the reinforcing bar binding machine 20 includes a wire drawing mechanism and a wire guide 42 for drawing the wire 12 of the wire reel 10 and the wire 1 thereof.
It has a binding mechanism 44 for binding and cutting the wire 2 around the reinforcing bar. The wire reel 10 is formed so that there is no protruding portion of the wire reel 10 from the side surface of the reinforcing bar binding machine 20 in the mounted state.

Next, a method of using the wire reel 10 of this embodiment will be described below with reference to FIGS. First, as shown in FIGS. 5 and 6, the wire reel 10 is mounted in the mounting recess 40 of the reinforcing bar binding machine 20. At this time,
The shaft support portion 15 of the wire reel 10 is placed on the reinforcing bar binding machine 20 side, and the side surface recessed portion 17 is mounted outward. At the time of mounting, the locking projection 28 at the tip of the rotation center shaft 22 is mounted in alignment with the guide groove 26 of the shaft support 15 of the wire reel 10.

After the wire reel 10 is housed in the mounting recess 40 of the reinforcing bar binding machine 20, as shown in FIGS.
The locking protrusion 28 of the rotary sleeve 25 of the rotation center shaft 22 is
Against the biasing force of the coil spring 34, the slope 30 of the shaft support portion 15 of the wire reel 10 is passed over, and as shown in FIG. 9 and FIG. This completes the mounting of the wire reel 10 on the reinforcing bar binding machine 10.

When the wire reel 10 is removed, as shown in FIGS. 11 and 12, the end 46 on the opposite side of the rotation center shaft 22 exposed on the side surface of the reinforcing bar binding machine 20 is used as the biasing force of the coil spring 34. It is pressed against and the locking projection 28 at the tip of the rotation center shaft 22 is pushed into the side surface recess 1 of the wire reel 10.
It is made to project in 7. Then, the engagement with the engagement groove portion 32 is released, and the engagement groove portion 32 is rotated by 90 degrees to be aligned with the guide groove 26 of the shaft support portion 15. As a result, the wire reel 10 has the rotation center shaft 2
The second locking protrusion 28 is disengaged from the guide groove 26, and the removal of the wire reel 10 is completed.

The wire reel 10 of this embodiment can be mounted on the side surface of the reinforcing bar binding machine 20 from the axial direction of the rotation center axis for attachment, and the handle 50 of the reinforcing bar binding machine is shown in FIG.
As shown in FIG. 6 and the like, it can be attached to the rear end portion of the reinforcing bar binding machine 20, and the binding portion 21 at the front end thereof can be easily inserted into the grid of the reinforcing bar, which greatly improves the operability at that time. Can be improved. Also, the wire reel 1
The mounting of 0 is performed only by fitting it in the mounting recess 40 in the axial direction and rotating the rotation center shaft 22, and each can be mounted very easily and surely. Further, there is no portion protruding from the side surface of the reinforcing bar binding machine 20, and the flange portion 16 of the side surface of the wire reel 10 is flush with the cylindrical portion 14, so that there is no catch on the surface, and handling and safety are high. Is.

The wire reel for a reinforcing bar binding machine according to the present invention can be mounted on the reinforcing bar binding machine from the side in the axial direction of the central axis of rotation, and the shape of the engaging mechanism and the collar portion does not matter. .

[0018]

INDUSTRIAL APPLICABILITY The wire reel for a reinforcing bar binding machine according to the present invention can be mounted on the reinforcing bar binding machine in the axial direction of the rotation center axis from the side, so that the operability of the reinforcing bar binding machine can be improved and the wire The reel itself can be easily attached and detached, and the attachment is secure.

[Brief description of drawings]

FIG. 1 is a front view (a) of a wire reel for a reinforcing bar binding machine according to an embodiment of the present invention, a sectional view taken along the line AA of the front view (a) (b), and a line taken along the line BB of the front view (a). It is sectional drawing (c).

FIG. 2 is a rear view of the wire reel for the reinforcing bar binding machine according to the embodiment of the present invention.

FIG. 3 is a bottom view of the wire reel for the reinforcing bar binding machine according to the embodiment of the present invention.

FIG. 4 is a partial cross-sectional view of a reinforcing bar binding machine equipped with the wire reel for a reinforcing bar binding machine according to an embodiment of the present invention.

FIG. 5 is a partial front view showing the attachment of the wire reel for the reinforcing bar binding machine according to the embodiment of the present invention.

FIG. 6 is a partial transverse sectional view showing the attachment of the wire reel for the reinforcing bar binding machine according to the embodiment of the present invention.

FIG. 7 is a partial front view showing a state in which the wire reel for a reinforcing bar binding machine according to the embodiment of the present invention is attached to the reinforcing bar binding machine.

FIG. 8 is a partial transverse cross-sectional view showing a state in which the wire reel for a reinforcing bar binding machine of one embodiment of the present invention is attached to the reinforcing bar binding machine.

FIG. 9 is a partial front view showing a usage state of the wire reel for a reinforcing bar binding machine of the embodiment of the present invention in the reinforcing bar binding machine.

FIG. 10 is a partial cross-sectional view showing a use state of the wire reel for a reinforcing bar binding machine of the embodiment of the present invention in the reinforcing bar binding machine.

FIG. 11 is a partial front view showing a state in which the wire reel for a reinforcing bar binding machine according to the embodiment of the present invention is removed from the reinforcing bar binding machine.

FIG. 12 is a partial transverse cross-sectional view showing a state in which the wire reel for a reinforcing bar binding machine of one embodiment of the present invention is removed from the reinforcing bar binding machine.

[Explanation of symbols]

 10 Wire Reels 12 Wires 14 Cylindrical Parts 15 Shaft Supports 16 Collars 17 Side Recesses 20 Reinforcing Bar Binding Machine 22 Rotation Center Axis 26 Guide Grooves 28 Locking Protrusions 30 Slopes 32 Engagement Grooves 40 Mounting Recesses

Claims (4)

[Claims] 1. A tubular portion around which a wire is wound, and a pair of flange portions formed concentrically from both end surfaces of the tubular portion so as to be flush with both end surfaces of the tubular portion. , A shaft supporting portion formed on one end surface of the tubular portion and axially supported by a rotation center shaft of a mounting portion formed on a side surface of the reinforcing bar binding machine, and the tubular portion on the opposite side of the shaft supporting portion. Reinforcing bar bundling including a side surface recess formed on the end surface and protruding from the tip of the rotation center shaft of the rebar binding machine, and an engaging portion formed at the center of the side surface recess to engage with the end of the rotation center shaft Wire reel for machine. 2. A locking projection is formed at the tip of the center axis of rotation of the reinforcing bar binding machine, and a guide portion through which the locking projection is inserted is provided at the shaft support portion of the wire reel, and one of the shaft support portions is provided. At the center of the bottom surface of the side surface recessed portion, which is the end surface of
The wire reel for a reinforcing bar binding machine according to claim 1, wherein an engaging portion with which the locking projection is engaged is formed. 3. The rotation center shaft of the reinforcing bar binding machine is biased inwardly, and the slope of the wire reel on which the locking projection at the tip of the rotation center shaft rides over against the biasing force. The wire reel for a reinforcing bar binding machine according to claim 2, wherein the engaging portion, which is a recess, is formed at the end of the inclined surface. 4. A tubular portion around which a wire is wound, and a pair of flange portions formed concentrically from both end surfaces of the tubular portion and flush with both end surfaces of the tubular portion. , A shaft supporting portion formed on one end surface of the tubular portion and rotatably supported by a rotation center shaft of a mounting portion formed on a side surface of the reinforcing bar binding machine, and a through hole formed in a part of the tubular portion. A wire reel for a reinforcing bar binding machine, wherein one end of the wire is inserted into the through hole, and the inserted portion is wound to a diameter larger than the through hole and engages with a peripheral portion of the through hole.