JP6747485B2 - Rebar binding machine - Google Patents

Description

According to the present invention, a wire pulled out from a wire reel is fed to a guide portion provided at the tip of a binding machine body, and a curl is attached to the wire by the guide portion, and the wire is fed around a rebar arranged inside the guide portion. The present invention relates to a reinforcing bar binding machine that winds a wire around a wire and twists the wire to bind the reinforcing bars.

In the reinforcing bar binding machine, the wire feeding means pulls out the reinforcing bar binding wire from the wire reel housed in the binding machine body and sends it to the guide portion provided at the tip of the binding machine body. The wire is fed around the reinforcing bar arranged inside the guiding section in a curled state by the curling mechanism of the guide section and curled, and is wound in a loop around the reinforcing bar. .. Next, the reinforcing bar binding machine cuts the wire by the wire cutting mechanism and twists one side of the loop-shaped wire by a pair of hooks of the wire twisting device to bind the reinforcing bar. As described above, the guide portion of the reinforcing bar binding machine is configured with the curl curling mechanism that curls the wire and feeds the curl.

The guide part of the reinforcing bar binding machine was fed from the wire cutting mechanism, the guide part that guides the feeding of the wire from the wire reel, the cutting part of the wire cutting mechanism for cutting after feeding a predetermined amount of wire. Three parts of a curl guide for bending a wire are arranged in order (for example, Patent Document 1). The three parts of the guide portion have a function as a guide member for imparting a curl to the wire, and form a curl imparting mechanism.

Japanese Patent No. 496463

However, the curl forming mechanism provided in the guide portion of the reinforcing bar binding machine has the following problems. First, there is a problem that it is difficult to keep the curl diameter of the wire wound around the reinforcing bar in a loop shape constant. The above-mentioned three parts have complicated shapes, and the curl diameter is likely to be non-uniform because the sizes of the parts and the mounting positions of the parts are likely to vary. When the curl diameter of the wire sent out from the guide part becomes too small, the phenomenon that a pair of hooks of the wire twisting device cannot grasp the wire, or the starting end part of the wire that loops back and returns is the guide part. There is a risk that problems such as the phenomenon that the curl pick-up guide does not enter will occur. If the curl diameter of the wire sent out from the guide portion becomes too large, there is a possibility that the starting end of the wire may hit the curl pick-up guide (or the lower guide) and the loop may not be formed. Therefore, the conventional reinforcing bar binding machine has a problem that the dimensional control of the three parts is very troublesome and the cost becomes high.

Secondly, the three parts that give the curl tend to be worn because they are constantly rubbed by the iron wire, and in particular, the curl guide that curls the wire into a curl is heavily worn and has a short service life. There was a point. Thirdly, there is a problem that the above-mentioned wear increases the wire feed resistance and reduces the smoothness of wire feed. Fourthly, there is a problem that the curling diameter of the wire becomes large due to wear and weakening of the wire over repeated use. When the curl diameter of the wire becomes large, it is as described above, and it is troublesome to replace the parts for guiding the wire. Fifth, although it is possible to cure the three parts to cope with wear, the complicated shape of the parts limits the selection of the material (hardness), which is troublesome after all. was there.

The present invention has been devised in view of the above problems, in which the guide portion is provided with at least three guide members for guiding the outer surface and the inner surface of the wire, and the at least three guide members wind the wire. A curling mechanism can be configured so that a curl diameter of the wire can be given a constant curl, wear can be reduced to improve the life of parts, wire can be fed smoothly, and it can be manufactured at low cost. An object is to provide a reinforcing bar binding machine.

The reinforcing bar binding machine according to claim 1 of the present application achieves the above object,
The wire reel can be removably attached, and the wire is pulled out from the attached wire reel and sent to the guide part provided at the tip of the binding machine body, and the guide part gives a winding tendency to the inside of the guide part. In a reinforcing bar binding machine for sending out around arranged reinforcing bars, winding around the cutting bars and cutting them, and twisting the wire to bind the reinforcing bars,
The guide part has
A guide part that guides the feeding of the wire from the wire reel,
A cutting part for cutting after feeding a predetermined amount of wire,
A curl guide that guides the sent wire to curl,
It is disposed in order from the guide portion, and the first guide member in contact with the outer surface of the outer side of bending of the wire Ru curled wire, in contact with the inner surface of the inner bend of the wire of the wire and a second guide member which Ru is curled, in contact with the outer surface of the outer side of bending of the wire and the third guide member Ru curled wire,
The third guide member is a cutting portion.

The reinforcing bar binding machine according to claim 2 of the present application achieves the above object.
The wire reel can be removably attached, and the wire is pulled out from the attached wire reel and sent to the guide part provided at the tip of the binding machine body, and the guide part gives a winding tendency to the inside of the guide part. In a reinforcing bar binding machine for sending out around arranged reinforcing bars, winding around the cutting bars and cutting them, and twisting the wire to bind the reinforcing bars,
The guide part has
A guide part that guides the feeding of the wire from the wire reel,
A cutting part for cutting after feeding a predetermined amount of wire,
A curl guide that guides the sent wire to curl,
It is disposed in order from the guide portion, and the first guide member in contact with the outer surface of the outer side of bending of the wire Ru curled wire, in contact with the inner surface of the inner bend of the wire of the wire and a second guide member which Ru is curled, in contact with the outer surface of the outer side of bending of the wire and the third guide member Ru curled wire,
The second guide member is a cutting portion.

The reinforcing bar binding machine according to claim 3 of the present application achieves the above object.
The wire reel can be removably attached, and the wire is pulled out from the attached wire reel and sent to the guide part provided at the tip of the binding machine body, and the guide part gives a winding tendency to the inside of the guide part. In a reinforcing bar binding machine for sending out around arranged reinforcing bars, winding around the cutting bars and cutting them, and twisting the wire to bind the reinforcing bars,
The guide part has
A guide part that guides the feeding of the wire from the wire reel,
A cutting part for cutting after feeding a predetermined amount of wire,
A curl guide that guides the sent wire to curl,
It is disposed in order from the guide portion, and the first guide member in contact with the outer surface of the outer side of bending of the wire Ru curled wire, in contact with the inner surface of the inner bend of the wire of the wire and a second guide member which Ru is curled, in contact with the outer surface of the outer side of bending of the wire and the third guide member Ru curled wire,
The first guide member is a cutting portion.

In order to achieve the above object, the reinforcing bar binding machine according to claim 4 of the present invention is characterized in that at least one of the first guide member, the second guide member and the third guide member is a guide pin.

In order to achieve the above object, the reinforcing bar binding machine according to claim 5 of the present invention is characterized in that the third guide member is arranged in the curl guide or in the vicinity of the curl guide.

Reinforcing bar binding machine according to the present invention, at least the guide portion, in contact with the first guide member Ru curled wire in contact with the outer surface of the outer side of bending of the wire, an inner surface facing inward bending of the wire a second guide member Ru curled wire and, the wire bent outwardly to become an outer surface and contact with a third which Ru is curled wire of a guide member is provided, the at least three guide members in wire The curling mechanism was constructed. In the reinforcing bar binding machine according to the present invention, since the curling mechanism of the guide portion is configured by at least three guide members, the curling diameter of the wire wound around the reinforcing bar in a loop shape is approximately constant. Therefore, there is an effect that defective binding is reduced and stable wire binding can be maintained. Furthermore, it curled while the guide wire by at least three guide members Runode, guide portion, can reduce the contact of the wire to the components such as the curl guide, reduce wear, that it is possible to improve the component life effective. Further, there is an effect that it is possible to facilitate at least three guide Runode curled while the guide wire by member, wire feed.

1 is a perspective view showing an embodiment of a reinforcing bar binding machine according to the present invention with a side cover removed. It is the top view which showed the principal part of the upper surface of the reinforcing bar binding machine of FIG. It is a side view of the reinforcing bar binding machine of FIG. It is the perspective view which looked at a wire guide part from the bottom. It is a side view which shows 1st Example of a curling mechanism. It is a side view which shows 2nd Example of a curling mechanism. It is a side view which shows 3rd Example of a curling mechanism, (a) is a figure using a slide type slide cutter, (b) is a figure using a rocking type slide cutter. It is a side view which shows the 4th Example of a curling mechanism. It is a side view which shows 5th Example of a curling mechanism. It is a side view showing a 6th example of a curling mechanism. It is a side view showing a 7th example of a curling mechanism.

As shown in FIGS. 1 to 3, in the reinforcing bar binding machine 1, a wire reel 4 around which a reinforcing bar binding wire 5 is wound is mounted in a storage chamber 3 provided in a binding machine body 2, and the wire reel 4 is attached. While rotating, the wire 5 is pulled out and sent to the guide portion 6 provided at the tip of the binding machine body 2, and the wire 5 is curled by the guide portion 6 so as to surround the reinforcing bar 7 arranged inside the guide portion 6. The wire 5 is sent out to the periphery of the wire 5 and then wound around it, and the original side of the wire 5 is cut by a wire cutting mechanism, and the wound portion is twisted by a wire twisting device to bind the reinforcing bars 7.

The binding machine main body 2 is provided with a main body side guide portion (guide tube) 9 through which the wire 5 drawn from the wire reel 4 passes. One end 9p (see FIG. 1) of the main body side guide portion (guide tube) 9 is open to the storage chamber 3, and the other end 9s is located in front of the guide portion 6. As shown in FIG. 2, a pair of wire feed gears 10 are provided in the middle of the main body side guide portion (guide tube) 9 as a feeding means for the wire 5. The wire 5 is sandwiched between the feed grooves formed in the pair of wire feed gears 10, and the wire 5 is fed forward by an electric motor (not shown).

When the switch is turned on by the trigger T, an electric motor (not shown) rotates and the wire feed gear 10 rotates. Then, by the rotation of the wire feed gear 10, the wire 5 wound around the wire reel 4 housed in the housing chamber 3 is sent to the front of the binding machine body 2 through the body side guide portion (guide tube) 9.

A gently curved guide portion 6 is attached to the tip of the binding machine body 2. As shown in FIG. 5, the guide portion 6 is provided with a guide side guide portion (guide tube) 8. The other end 9s of the main body side guide portion (guide tube) 9 is connected to the rear end 8c of the guide side guide portion (guide tube) 8. The guide portion 6 guides the wire 5 sent out from the main body side guide portion (guide tube) 9 of the binding machine main body 2 through the guide side guide portion (guide tube) 8 and from the tip 8d thereof, so that the wire 5 is not curled. It is configured to be delivered while attached. The guide portion 6 is formed by the guide frame 13. The guide frame 13 has a pair of frame plates 13a and 13b (see FIG. 4), and one frame plate 13a is assembled with the other frame plate 13b. The tip of the guide portion 6 is curved in an arc shape, and is given a curl here so as to circulate around the reinforcing bar 7 with the lower guide 19.

As described above, the guide frame 13 forming the guide portion 6 is provided with a guide side guide portion (guide tube) 8 for guiding the feeding of the wire 5 from the wire reel 4, and a predetermined amount of the guide portion 8 as shown in FIG. A wire cutting mechanism 11 arranged on the wire feeding path for cutting the wire 5 after it has been fed out, and a curl guide 12 for bending the wire 5 are arranged and fixed.

The guide passage 8e through which the wire 5 of the guide portion (guide tube) 8 is inserted has its inner diameter narrowed toward the tip 8d so that the wire 5 is led out from a predetermined position. The guide portion 6 is provided with a curling mechanism for curling the wire 5 to give a curl and feed it. The wire 5 guided by the guide-side guide portion (guide tube) 8 and drawn out is curled by the curling mechanism, curled, fed out by a predetermined amount and wound around the reinforcing bar 7, and then the wire 5 It is cut by the cutting mechanism 11.

The wire cutting mechanism 11 is configured to cut the wire 5 when the feed amount of the wire 5 reaches a predetermined amount. The wire cutting mechanism 11 includes a circular fixed blade 14 fixed to the guide frame 13, a movable blade 15 rotatably provided around the fixed blade 14, and a drive lever 16 for rotating the movable blade 15. It is a rotary cutter composed of and.

A wire through hole 17 is formed through the fixed blade 14 having a circular shaft shape in the feeding direction of the wire 5. One end of the wire through hole 17 opens toward the tip 8 d of the guide side guide portion (guide tube) 8 and the other end opens toward the tip side of the guide portion 6. The opening on one end side of the wire through hole 17 is a wire inlet 17a, and the opening on the other end side of the wire through hole 17 is a wire outlet 17b. Further, the movable blade 15 is formed with a wire insertion hole 15a in the feeding direction of the wire 5. One end of the wire insertion hole 15a opens toward the wire outlet 17b of the wire through hole 17 of the fixed blade 14, and the other end opens toward the tip side of the guide portion 6. The opening on one end side of the wire insertion hole 15a of the movable blade 15 is a wire entry port 15b, and the opening on the other end side of the wire insertion hole 15a is a wire ejection port 15c.

The wire cutting mechanism 11 rotates the movable blade 15 counterclockwise by the drive lever 16 so that the surface of the movable blade 15 on the wire entry port 15b side moves upward along the surface of the fixed blade 14 on the wire outlet 17b side. The lower edge of the wire entry port 15b of the movable blade 15 slides on the wire 5 and cuts the wire 5 penetrating the wire through hole 17.

In addition to the rotary cutter described above, the wire cutting mechanism may use a sliding type slide cutter shown in FIG. 7A and a swing type slide cutter shown in FIG. 7B. The sliding-type 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 consists of and.

A wire through hole 34 is formed through the fixed blade 32 in the feeding direction of the wire 5. One end of the wire through hole 34 opens toward the tip 8d of the guide portion (guide tube) 8 and the other end opens toward the tip side of the guide portion 6. An opening on one end side of the wire through hole 34 is a wire inlet 35, and an opening on the other end side of the wire through hole 34 is a wire outlet 36.

The wire cutting mechanism 31 moves the movable blade 33 downward (from the outer side of the curve of the wire to the inner side) via the link mechanism 37 by the drive lever 16, so that one surface 38 of the movable blade 33 is the wire of the fixed blade 32. The wire 5 slid downward along the surface of the through hole 34 on the wire outlet 36 side, and the lower end edge of the one surface 38 of the movable blade 33 cuts the wire 5 penetrating the wire through hole 34. In the swing-type wire cutting mechanism 41 shown in FIG. 7B, the guide tube 8 has the same function as the fixed blade 42, and the fixed blade 42 (guide tube 8) and the fixed blade 42 ( It is composed of a movable blade 43 that slides on the surface of the wire outlet 8d of the guide tube 8) to cut the wire 5, and a swing arm 46 that vertically moves the movable blade 43. The swing arm 46 is swingably attached to the guide frame 13 at a substantially central portion by a support shaft 47.

The curl guide 12 is fixed to the curved portion 13p of the guide frame 13, and as shown in FIG. 4, a guide groove 20 is formed to allow one wire 5 to pass through using the frame plates 13a and 13b on both sides of the guide frame 13 as groove walls. Has been formed. A guide surface 21 that guides the wire 5 that has passed through the wire through holes 17 and 34 of the fixed blades 14 and 32 in a curling direction is formed in an arc shape at the groove bottom.

As shown in FIG. 4, a curl pick-up guide 22 is formed in the guide portion 6 next to the curl guide 12. This is to pick up the end of the wire 5 sent out from the curl guide 12 and circulated in a loop shape and returned, and guide it again for the next circling.

In the above structure, the wire 5 sent out from the guide side guide portion (guide tube) 8 is further sent out along the guide surface 21 of the curl guide 12 through the wire through holes 17 and 34 of the fixed blades 14 and 32, Since the guide surface 21 is brought into contact with the guide surface 21 at a constant pressure according to the feeding speed of the wire 5, the wire 5 is bent into a curved shape and is given a curl.

As shown in FIG. 10, the guide section 6 includes a guide side guide section (guide tube) 8 (hereinafter referred to as a guide section (guide tube) 8) for guiding the feeding of the wire 5 from the wire reel 4 and a predetermined amount. The wire cutting mechanism 11 (or 31) disposed on the wire feeding path for cutting the wire 5 after it has been fed out, and the curl guide 12 for guiding the fed wire 5 to curl. Further, the guide portion 6 is arranged on the wire feeding path in order from the guide portion (guide tube) 8 side, that is, the wire outlet 8d at the end of the guide portion (guide tube) 8 or the vicinity thereof. A first guide member 23 that guides the outer surface that is the outer side of the bend, a second guide member 24 that guides the inner side surface that is the inner side of the wire bend, and an outer surface that is the outer side of the wire bend. It has a curling mechanism composed of the third guide member 25. When the wire is fed, the reinforcing bar binding machine 1 causes the wire 5 to come into contact with the curling mechanism, that is, the first guide member 23, the second guide member 24, and the third guide member 25 to curl the wire 5. Let

The wire twisting device (not shown) is a wire 5 wound around the reinforcing bar in a loop shape by moving forward a sleeve having a pair of hooks openably and closably attached by an electric motor to close the hook. After gripping the wire, the hook is rotated together with the sleeve to twist the wire 5 to bind the reinforcing bars, and then the hook is opened and the sleeve is moved backward and separated from the wire 5 to return to the initial position. Is. Then, the wire twisting device operates the drive lever 16 of the wire cutting mechanism 11 (or 31) to cut the wire 5 when the sleeve advances.

The wire feeding device, the wire cutting mechanism 11 (or 31), and the wire twisting device operate under sequence control by a control circuit (not shown). Further, the control circuit measures the feed amount of the wire 5 based on the rotation amount of the wire feed gear 10 of the wire feed device.

Further, the guide member will be described with reference to FIG. The guide members 23 to 25 are formed by guide pins. Each of the first guide pin 23, the second guide pin 24, and the third guide pin 25 is a columnar member having a circular cross section, and both ends thereof are frame plates on both sides of the guide frame 13, as shown in FIG. Although it is fitted and fixed in the holes 26 formed in 13a and 13b, it may be fixed to only one of the frame plates 13a and 13b.

It is preferable that the first to third guide pins 23 to 25 are made of a material having a high hardness such as a cemented carbide pin (a cemented carbide pin or a ceramic pin) because they are less likely to wear, and have a simple shape. Therefore, it can be manufactured at a relatively low cost and the cost can be kept low. The first guide pin 23, the second guide pin 24, and the third guide pin 25 have a circular cross-sectional shape, but may have a non-circular shape such as an elliptical shape or a square rectangular shape. It is not limited.

Since the first to third guide pins 23 to 25 have a simple shape, variations in dimensions can be easily suppressed, and only the mounting positions where the first to third guide pins 23 to 25 are mounted on the guide portion 6. Since the dimensional accuracy is determined by, the accuracy of the curl diameter can be easily obtained. Therefore, the first to third guide pins 23 to 25 with which the wire 5 comes into contact are provided at correct positions, the curl is properly attached, and the curl diameter is stable. Moreover, since the first to third guide pins 23 to 25 have a simple shape, it is possible to freely select one having high hardness.

As shown in FIG. 10, the first guide pin 23 is provided above the end portion of the guide portion (guide tube) 8. The second guide pin 24 is provided at a position apart from the lower portion of the end of the guide portion (guide tube) 8. The upper portion 8a at the tip of the guide portion (guide tube) 8 is cut out, and the lower portion 8b extends. The peripheral surface of the first guide pin 23 is in contact with the end surface of the tip upper portion 8a of the guide portion (guide tube) 8. The second guide pin 24 is provided at a position away from the lower end 8b of the guide portion (guide tube) 8. As a result, the outer side surface of the wire 5 that constitutes the outer side of the bend contacts the first guide pin 23 and is guided. Further, the inner side surface of the wire 5 that constitutes the inner side of the bend contacts the second guide pin 24 and is guided. In this way, the wire 5 delivered from the guide portion (guide tube) 8 passes between the first guide pin 23 and the second guide pin 24.

The third guide pin 25 is arranged inside the tip of the curl guide 12. The third guide pin 25 is also attached so as to project slightly inward from the guide surface 21 of the curl guide 12. Therefore, the bent outer surface of the wire 5 delivered along the guide surface 21 of the curl guide 12 comes into contact with the third guide pin 25 and is guided downward. The third guide pin 25 is attached to the guide frame 13 as described above, but may be attached to the curl guide 12. Further, although the third guide pin 25 is arranged in contact with the curl guide 12, it may be provided at a position in the vicinity thereof apart from the curl guide 12. The guide member has been described as a guide pin as an example, but the tip or the entire guide portion (guide tube) 8 may be made of a hard member. Further, a hard protrusion formed of a hard member may be provided on the guide surface 21 of the curl guide 12.

As described above, the curling mechanism includes the first guide pin 23 to the third guide pin 25, and the wire 5 includes the first guide pin 23, the second guide pin 24, and the third guide pin 25. It has a curl that comes into contact with. Conventionally, the wire 5 is attached to a portion worn by contact with the wire 5 such as the guide path 8e of the guide portion (guide tube) 8 of the wire 5, the wire through hole 17 of the fixed blade 14 and the guide surface 21 of the curl guide 12. It's almost never touched.

As shown in FIG. 10, when the wire 5 is fed from the guide portion (guide tube) 8, the first guide pin 23 and the second guide pin 24 are provided in the vicinity of the tip portion on the guide portion (guide tube) 8 side. Since it is arranged on the wire feed path, it is guided by the first guide pin 23 and the second guide pin 24 with almost no contact with the tip of the guide portion (guide tube) 8, and the fixed blade 14 moves. It passes through the wire through hole 17. Note that the vicinity of the tip portion includes the tip portion and a portion distant from the tip portion. Further, the end portion side includes the end portion and the vicinity of the end portion. At this time, the first guide pin 23 and the second guide pin 24 guide the outer side surface and inner side surface of the wire 5 in contact with each other, so that the feeding is accurately performed. Therefore, the wire 5 is sent with almost no contact with the inner surface of the wire through hole 17 of the fixed blade 14. Then, the wire 5 is sent out while rubbing the guide surface 21 of the curl guide 12, and then slidably guided by the third guide pin 25 to be strongly bent.

As described above, in the reinforcing bar binding machine 1, the first guide pin 23 and the second guide pin 24 are provided in the vicinity of the tip end portion on the guide portion (guide tube) 8 side, and the curl guide 12 has the third guide pin inside. Of the guide pins 25 are arranged so that the wire 5 contacts the first to third guide pins 23 to 25, but the guide path 8e of the guide portion (guide tube) 8 and the wire through hole 17 of the fixed blade 14 and Since the guide surface 21 of the curl guide 12 hardly contacts, the guide portion (guide tube) 8, the fixed blade 14, and the curl guide 12 are not easily worn.

The first embodiment of the wire winding mechanism provided in the guide portion 6 will be described below.
As shown in FIG. 5, in the guide portion 6 of the reinforcing bar binding machine, the third guide member is the cutting portion 14 of the wire cutting mechanism 11, and the wire 5 sent from the second guide member 24 is cut by the wire. The cutting portion 14 of the mechanism 11 is configured to cut. Since the first and second guide members 23 and 24 are formed by guide pins and are attached as described above, the description thereof will be omitted.

Further, the cutting portion 14 of the wire cutting mechanism 11 that functions as the third guide member is disposed at the tip of the guide portion 6, and the curl guide 12 is provided between the second guide pin 24 and the cutting portion 14 of the wire cutting mechanism 11. Is provided. Therefore, the outer side surface of the wire 5 bent along the guide surface 21 of the curl guide 12 comes into contact with the cutting portion 14 of the wire cutting mechanism 11 and is guided to form a curl, and is sent to the lower guide 19. .. As a result, the wire 5 delivered from the guide portion (guide tube) 8 is guided by contacting the outer surface of the wire 5 that constitutes the outer side of the bend of the wire 5 with the first guide pin 23, and constitutes the inner side of the bend of the wire 5. The inner side surface of the fixed blade 14 contacts and is guided by the second guide pin 24, and the outer side surface of the wire 5 that constitutes the outer side of the bend contacts the wire through hole 17 of the fixed blade 14.

As described above, the curling mechanism includes the first guide pin 23, the second guide pin 24, and the cutting portion 14 of the wire cutting mechanism 11 which are arranged on the wire feeding path. The guide pin 23, the second guide pin 24, and the cutting portion 14 of the wire cutting mechanism 11 are brought into contact with each other to form a curl. Conventionally, like the guide passage 8e of the guide portion (guide tube) 8 of the wire 5 and the guide portion 21 of the curl guide 12, the wire 55 hardly contacts a portion where the wire 5 is worn due to contact.

As described above, when the wire 5 is sent out from the guide portion (guide tube) 8, the first guide pin 23 and the second guide pin 24 hardly contact the tip of the guide portion (guide tube) 8. It is guided by and passes through the wire through hole 17 of the fixed blade 14. At this time, the dimension between the lower end of the first guide pin 23 and the upper end of the second guide pin 24 is set to be approximately the same as the diameter of the wire 5, and the first guide pin 23 and the second guide pin Since the outer side surface and the inner side surface of the wire 5 are guided in contact with each other by 24, the feeding is accurately performed. Then, the wire 5 is fed while rubbing the guide surface 21 of the curl guide 12, and then contacted and guided by the fixed blade 14 of the wire cutting mechanism 11 to be strongly bent.

As described above, in the reinforcing bar binding machine 1, the first guide pin 23 and the second guide pin 24 are provided on the wire feeding path in the vicinity of the tip of the guide portion (guide tube) 8 on the guide portion (guide tube) 8 side. And the cutting portion 14 of the wire cutting mechanism 11 is provided inside the tip of the guide portion 6 on the wire feeding path, and the wire 5 includes the first guide pin 23, the first guide pin 23, and the wire cutting portion. Although it contacts the cutting portion 14 of the mechanism 11, it hardly contacts the guide path 8e of the guide portion (guide tube) 8 or the guide surface 21 of the curl guide 12, so that the guide portion (guide tube) 8 and the curl guide 12 Has a structure that does not wear, and the durability is greatly improved. In the conventional reinforcing bar binding machine, the wire is repeatedly contacted with the guide passage 8e of the guide portion (guide tube) 8 and the guide surface 21 of the curl guide 12 and is easily worn. If this portion is worn away, the curl diameter is affected. The reinforcing bar binding machine 1 is unlikely to cause such an adverse effect. Since the wire cutting mechanism 11 is arranged next to the second guide pin 24, the cut waste of the cut wire 5 is easily discharged from the guide portion 6, and the wire 5 is not clogged.

Hereinafter, a second embodiment of the wire winding propensity mechanism provided in the guide portion 6 will be described.

As shown in FIG. 6, in the guide portion 6 of the reinforcing bar binding machine 1, the second guide member is the cutting portion 14 of the wire cutting mechanism 11, and the third guide member 25 is arranged in the curl guide 12, The cutting unit 14 of the wire cutting mechanism 11 cuts the wire 5 sent from the first guide member 23. Since the first and third guide members 23 and 25 are formed by guide pins and are attached as described above, the description thereof will be omitted.

The first guide pin 23 is provided above the end of the guide portion (guide tube) 8. The upper portion 8a at the tip of the guide portion (guide tube) 8 is cut out, and the lower portion 8b extends. The peripheral surface of the first guide pin 23 abuts on the end surface of the tip upper portion 8 a of the guide portion (guide tube) 8 and projects inside the guide portion (guide tube) 8. The third guide pin 25 is arranged inside the tip of the curl guide 12, and is attached so as to project slightly inward from the guide surface 21 of the curl guide 12. Therefore, the wire 5 is sent out along the guide surface 21 of the curl guide 12, and the outer side surface of the bend of the wire 5 is brought into contact with the third guide pin 25 to be guided and curled to the lower guide 19. Sent.

The cutting portion 14 of the wire cutting mechanism 11 arranged between the first guide pin 23 and the third guide pin 25 functions as a second guide member. The cutting portion 14 of the wire cutting mechanism 11 is arranged on the wire outlet 8d side of the end portion of the guide portion (guide tube) 8. As a result, the wire 5 delivered from the guide portion (guide tube) 8 is guided by contacting the outer surface of the wire 5 that constitutes the outer side of the bend of the wire 5 with the first guide pin 23, and constitutes the inner side of the bend of the wire 5. The inner side surface of the fixed blade 14 is brought into contact with and guided by the wire through hole 17, and the outer side surface of the wire 5 constituting the outer side of bending is brought into contact with and guided by the third guide pin 25.

As described above, the curling mechanism includes the first guide pin 23, the cutting portion 14 of the wire cutting mechanism 11, and the third guide pin 25, which are arranged on the wire feeding path. The guide pin 23, the cutting portion 14 of the wire cutting mechanism 11, and the third guide pin 25 are in contact with each other to impart a curl. Conventionally, like the guide path 8e of the guide portion (guide tube) 8 of the wire 5 and the guide surface 21 of the curl guide 12, the wire 5 is hardly contacted with the worn portion due to the contact of the wire 5.

As described above, when the wire 5 is sent out from the guide portion (guide tube) 8, the wire 5 is guided by the first guide pin 23 and hardly contacts the tip of the guide portion (guide tube) 8, and the fixed blade 14 Through the wire through hole 17. At this time, the lower end of the first guide pin 23 and the wire through hole 17 of the fixed blade 14 guide the outer surface and inner surface of the bent wire 5 in contact with each other, so that the feeding is accurately performed. Then, the wire 5 is fed while rubbing the guide surface 21 of the curl guide 12, and then contacted and guided by the third guide pin 25, so that the wire 5 is strongly bent.

As described above, in the reinforcing bar binding machine 1, the first guide pin 23 and the fixed blade 14 of the wire cutting mechanism 11 feed the wire near the tip of the guide portion (guide tube) 8 on the guide portion (guide tube) 8 side. The third guide pin 25 is provided on the path, and the third guide pin 25 is arranged on the wire feed path inside the tip of the curl guide 12. The wire 5 is the first guide pin 23 and the fixed blade of the wire cutting mechanism 11. 14 and the third guide pin 25 are contacted with each other, but almost never contact the guide passage 8e of the guide portion (guide tube) 8 or the guide surface 21 of the curl guide 12, so that the guide portion (guide tube) 8 The curl guide 12 does not wear, and the durability is greatly improved. In the conventional reinforcing bar binding machine, the wire is repeatedly contacted with the guide path 8e of the guide portion (guide tube) 8 or the guide surface 21 of the curl guide 12 and is easily worn. Therefore, when these portions are worn out, the curl diameter is reduced. Although affected, the reinforcing bar binding machine 1 is unlikely to cause such an adverse effect.

Further, since the wire cutting mechanism 11 is arranged next to the first guide pin 23, the length of the initial position of the wire 5 protruding from the guide portion (guide tube) 8 is as shown in FIG. It is a relatively straight and short distance up to 11, and for example, the distance that becomes an obstacle when pulling out the wire 5 from the wire path of the guide portion 6 for removing the wire reel 4 at the time of maintenance is short and easy to pull out.

The third embodiment of the wire winding mechanism provided in the guide portion 6 will be described below.

As shown in FIG. 7, in the guide portion 6 of the reinforcing bar binding machine 1, the second guide member is the cutting portion 32 of the wire cutting mechanism 31, and the third guide member 25 is arranged in the curl guide 12, The cutting section 32 of the wire cutting mechanism 31 cuts the wire 5 sent from the first guide member 23. Since the first and third guide members 23 and 25 are formed by guide pins and are attached as described above, the description thereof will be omitted.

The cutting portion 32 of the wire cutting mechanism 31 arranged between the first guide pin 23 and the third guide pin 25 functions as a second guide member. The cutting portion 32 of the wire cutting mechanism 31 is arranged on the wire outlet 8d side of the end portion of the guide portion (guide tube) 8. As a result, the wire 5 delivered from the guide portion (guide tube) 8 is guided by contacting the outer surface of the wire 5 that constitutes the outer side of the bend of the wire 5 with the first guide pin 23, and constitutes the inner side of the bend of the wire 5. The inner side surface of the fixed blade 32 contacts and is guided by the wire through hole 34 of the fixed blade 32, and the outer side surface of the outer side of the bending of the wire 5 contacts and is guided by the third guide pin 25.

As described above, the curling mechanism includes the first guide pin 23, the cutting portion 32 of the wire cutting mechanism 31, and the third guide pin 25 arranged on the wire feeding path. The guide pin 23, the cutting portion 32 of the wire cutting mechanism 31, and the third guide pin 25 are in contact with each other to impart a curl. Conventionally, like the guide path 8e of the guide portion (guide tube) 8 of the wire 5 and the guide surface 21 of the curl guide 12, the wire 5 is hardly contacted with the worn portion due to the contact of the wire 5.

As described above, when the wire 5 is fed from the guide portion (guide tube) 8, the wire 5 is guided by the first guide pin 23 and hardly contacts the tip of the guide portion (guide tube) 8 and is fixed to the fixed blade 32. Passing through the wire through-hole 34. At this time, the lower end of the first guide pin 23 and the wire through hole 34 of the fixed blade 32 guide the outer side surface and the inner side surface of the wire 5 in contact, so that the feeding is accurately performed. Then, the wire 5 is fed while rubbing the guide surface 21 of the curl guide 12, and then contacted and guided by the third guide pin 25, so that the wire 5 is strongly bent.

As described above, in the reinforcing bar binding machine 1, the first guide pin 23 and the fixed blade 32 of the wire cutting mechanism 31 feed the wire near the tip of the guide portion (guide tube) 8 on the guide portion (guide tube) 8 side. A third guide pin 25 is provided on the path, and inside the tip of the curl guide 12, a third guide pin 25 is arranged on the wire feeding path, and the wire 5 is the fixed blade of the first guide pin 23 and the wire cutting mechanism 31. 32, the third guide pin 25 is contacted, but the guide path 8e of the guide portion (guide tube) 8 and the guide surface 21 of the curl guide 12 are hardly contacted. The guide 12 does not wear, and the durability is greatly improved. Note that the vicinity of the tip portion includes the tip portion and a portion distant from the tip portion. Further, the end portion side includes the end portion and the vicinity of the end portion. In the conventional reinforcing bar binding machine, the wire is repeatedly contacted with the guide path 8e of the guide portion (guide tube) 8 or the guide surface 21 of the curl guide 12 and is easily worn. If this portion is worn away, the curl diameter is affected. However, such a harmful effect is unlikely to occur in the reinforcing bar binding machine 1.

Further, since the wire cutting mechanism 31 is arranged next to the first guide pin 23, the length of the initial position of the wire 5 protruding from the guide portion (guide tube) 8 is as shown in FIG. It is a relatively straight and short distance up to 31, and for example, the distance that becomes an obstacle when pulling out the wire 5 from the wire path of the guide portion 6 for removing the wire reel 4 at the time of maintenance is short and easy to pull out.

A fourth embodiment of the wire winding mechanism provided in the guide portion 6 will be described below.

As shown in FIG. 8, in the guide portion 6 of the reinforcing bar binding machine 1, the first guide member is the cutting portion 14 of the wire cutting mechanism 11, and the third guide member 25 is arranged in the curl guide 12 to guide the guide portion 6. The cutting section 14 of the wire cutting mechanism 11 is configured to cut the wire 5 sent from the wire outlet at the end of the section (guide tube) 8. The second and third guide members 24, 25 are formed of guide pins and are attached as described above, and thus the description thereof will be omitted. The cutting portion 14 of the wire cutting mechanism 11 is provided substantially in the middle of the guide portion (guide tube) 8 and the second guide pin 24.

The cutting unit 14 of the wire cutting mechanism 11 functions as a first guide unit. As a result, the wire 5 delivered from the guide portion (guide tube) 8 is guided by the outer surface of the wire 5 that constitutes the outer side of the bend contacting the cutting portion 14 of the wire cutting mechanism 11, and then the wire 5 is guided. The inner side surface that constitutes the inner side of the bend contacts and is guided by the second guide pin 24, and the outer side surface that constitutes the outer side of the bend of the wire 5 contacts and is guided by the third guide pin 25. A habit is added and it is sent to the lower guide 19. The wire 5 delivered from the guide portion (guide tube) 8 is inserted into the wire through hole 17 of the fixed blade 14 of the wire cutting mechanism 11 before coming into contact with the second guide pin 24, and then the second guide pin. Sent to 24. The tip portion of the wire 5 is guided by the cutting portion 14 of the wire cutting mechanism 11 and the second guide pin 24, and then is fed so as to slide along the guide surface 21 of the curl guide 12, and then the third portion. It comes in contact with the guide pin 25, and a strong bending tendency is attached.

As described above, the curling mechanism includes the cutting portion 14, the second guide pin 24, and the third guide pin 25 of the wire cutting mechanism 11 arranged on the wire feeding path, and the wire 5 cuts the wire. The curl is formed by contacting the cutting portion 14, the second guide pin 24, and the third guide pin 25 of the mechanism 11. Conventionally, like the guide path 8e of the guide portion (guide tube) 8 of the wire 5 and the guide surface 21 of the curl guide 12, the wire 5 is hardly contacted with the worn portion due to the contact of the wire 5.

As described above, when the wire 5 is sent out from the guide portion (guide tube) 8, it hardly contacts the tip of the guide portion (guide tube) 8 and the wire through hole 17 of the fixed blade 14 and the second through hole. Guided by the guide pin 24 and the third guide pin 25, the wire through hole 17 of the fixed blade 14, the second guide pin 24, and the third guide pin 25 bend the outer surface, inner surface, and outer surface of the wire 5. The feed is accurate because the sides are guided in contact. Then, the wire 5 is fed while rubbing the guide surface 21 of the curl guide 12, and is strongly bent.

Thus, in the reinforcing bar binding machine 1, the wire 5 sequentially contacts the wire through hole 17 of the fixed blade 14, the second guide pin 24, and the third guide pin 25, and the tip of the guide portion (guide tube) 8 is reached. The guide portion (guide tube) 8 and the curl guide 12 are not worn because they hardly contact the guide surface 21 and the guide surface 21, and the durability is greatly improved. In the conventional reinforcing bar binding machine, the wire is repeatedly contacted with the guide passage 8e of the guide portion (guide tube) 8, the wire through hole 17 of the fixed blade 14, or the guide surface 21 of the curl guide 12, and is easily worn. When worn down, the curl diameter is affected, but in the reinforcing bar binding machine 1, such an adverse effect is unlikely to occur.

Further, since the wire cutting mechanism 11 is arranged next to the guide portion (guide tube) 8, the length of the initial position of the wire 5 protruding from the guide portion (guide tube) 8 is as shown in FIG. The distance to the mechanism 11 is short, and for example, the distance that becomes an obstacle when pulling out the wire 5 from the wire path of the guide portion 6 for removing the wire reel 4 at the time of maintenance is short, and there is no obstacle member other than the wire cutting mechanism 11. Easy to pull out. Further, in the first to fourth embodiments, since the wire cutting mechanism also serves as the guide member, there is no need for a space for disposing one guide member in the guide portion 6, and the guide portion 6 can be made compact. .. Further, although the cutting portion for guiding the wire has been described on the fixed blades 14 and 32 side, it may be on the movable blades 15 and 33 side and is not particularly limited.

The fifth embodiment of the wire winding mechanism provided in the guide portion 6 will be described below.

As shown in FIG. 9, in the reinforcing bar binding machine 1, the third guide member 25 is arranged on the curl guide 12, and the cutting portion 14 of the wire cutting mechanism 11 is arranged next to the third guide member 25. The wire 5 sent from the guide member 25 is cut by the cutting portion 14 of the wire cutting mechanism 11. The guide members 23 to 25 are formed of guide pins and are attached as described above, and thus the description thereof will be omitted.

The first guide pin 23 is provided in the upper portion near the end of the guide portion (guide tube) 8. The second guide pin 24 is provided in the lower portion near the end of the guide portion (guide tube) 8. The upper portion 8a at the tip of the guide portion (guide tube) 8 is cut out, and the lower portion 8b extends. The peripheral surface of the first guide pin 23 is in contact with the end surface of the tip upper portion 8a of the guide portion (guide tube) 8. The peripheral surface of the second guide pin 24 is in contact with the end surface of the lower tip portion 8b of the guide portion (guide tube) 8. The first guide pin 23 and the second guide pin 24 respectively project inside the guide portion (guide tube) 8 and are located at the lower end of the peripheral surface of the first guide pin 23 and the peripheral surface of the second guide pin 24. The distance from the upper end is set to be approximately the same as the diameter of the wire 5. As a result, the outer side surface of the wire 5 that constitutes the outer side of the bend contacts the first guide pin 23 and is guided. Further, the inner side surface of the wire 5 that constitutes the inner side of the bend contacts the second guide pin 24 and is guided. In this way, the wire 5 delivered from the guide portion (guide tube) 8 passes between the first guide pin 23 and the second guide pin 24.

The curl guide 12 in which the third guide pin 25 is arranged is continuously attached to the tip end side of the guide portion (guide tube) 8. As described above, the third guide pin 25 is arranged inside the front end of the curl guide 12, and is attached so as to project slightly inward from the guide surface 21 of the curl guide 12. The wire 5 delivered from the guide portion (guide tube) 8 is guided by contacting the outer surface of the wire 5 that constitutes the outer side of the bend of the wire 5 with the first guide pin 23, and then constitutes the inner side of the bend of the wire 5. The inner side surface of the wire 5 contacts and is guided by the second guide pin 24, and the outer side surface of the outer side of the bend of the wire 5 is contacted and guided by the third guide pin 25, so that a curl is formed. Then, the wire is passed through the wire through hole 17 of the fixed blade 14 of the wire cutting mechanism 11 and sent to the lower guide 19. The tip portion of the wire 5 is guided by the first guide pin 23 and the second guide pin 24, and then is fed so as to slide along the guide surface 21 of the curl guide 12, and then the third guide pin. It comes in contact with 25 and can be strongly bent.

As described above, the curling mechanism includes the first guide pin 23 to the third guide pin 25 arranged on the wire feeding path, and the wire 5 includes the first guide pin 23 and the second guide pin 23. The pin 24 and the third guide pin 25 are brought into contact with each other to impart a curl. Conventionally, the wire 5 is attached to a portion worn by contact with the wire 5 such as the guide path 8e of the guide portion (guide tube) 8 of the wire 5, the wire through hole 17 of the fixed blade 14 and the guide surface 21 of the curl guide 12. It's almost never touched.

As described above, when the wire 5 is sent out from the guide portion (guide tube) 8, it is guided by the first guide pin 23, the second guide pin 24, and the third guide pin 25, and the wire 5 is further guided. Through the wire through hole 17 of the fixed blade 14 of the wire cutting mechanism 11 arranged on the feeding path of the. The wire 5 is guided by contacting the first guide pin 23, the second guide pin 24, and the third guide pin 25 with the outer side surface, inner side surface, and outer side surface of the wire 5 for bending, so that the feeding is accurately performed. ..

As described above, in the reinforcing bar binding machine 1, the first guide pin 23 and the second guide pin 24 are provided at the tip of the guide portion (guide tube) 8, and the third guide pin is provided inside the tip of the curl guide 12. 25 is arranged, and the wire 5 contacts the first to third guide pins 23 to 25, but the guide path 8e of the guide portion (guide tube) 8, the wire through hole 17 of the fixed blade 14, and the curl guide 12 are provided. Since the guide surface (guide tube) 8, the fixed blade 14, and the curl guide 12 are hardly contacted with the guide surface 21, the durability is significantly improved. In the conventional reinforcing bar binding machine, the wire is repeatedly contacted with the guide passage 8e of the guide portion (guide tube) 8, the wire through hole 17 of the fixed blade 14, or the guide surface 21 of the curl guide 12, and is easily worn. When worn down, the curl diameter is affected, but the reinforcing bar binding machine 1 is unlikely to cause such an adverse effect. Since the wire cutting mechanism 11 is arranged next to the third guide pin 25, the cut waste of the cut wire 5 is easily discharged from the guide portion 6, and the wire 5 is not clogged.

A sixth embodiment of the wire winding mechanism provided in the guide portion 6 will be described below.

As shown in FIG. 10, in the guide portion 6 of the reinforcing bar binding machine 1, the third guide member 25 is arranged on the curl guide 12, and the cutting portion 14 of the wire cutting mechanism 11 is connected to the first guide member 23 and the second guide member 23. It is arranged between the guide members 24, and is configured so that the cutting section 14 of the wire cutting mechanism 11 cuts the wire 5 sent from the first guide member 23. The guide members 23 to 25 are formed of guide pins and are attached as described above, and thus the description thereof will be omitted.

The first guide pin 23 is provided in the upper portion near the end of the guide portion (guide tube) 8. The vicinity of the end portion includes the end portion and a portion distant from the end portion. Further, the end portion side includes the end portion and the vicinity of the end portion. The third guide pin 25 is arranged inside the tip of the curl guide 12, and is attached so as to project slightly inward from the guide surface 21 of the curl guide 12. The second guide pin 24 is provided approximately in the middle of the first guide pin 23 and the third guide pin 25. The cutting portion 14 of the wire cutting mechanism 11 is provided substantially in the middle of the first guide pin 23 and the second guide pin 24.

The upper portion 8a at the tip of the guide portion (guide tube) 8 is cut out, and the lower portion 8b extends. The peripheral surface of the first guide pin 23 abuts on the end surface of the tip upper portion 8 a of the guide portion (guide tube) 8 and projects inside the guide portion (guide tube) 8. Therefore, the wire 5 sent out from the guide portion (guide tube) 8 is guided by contacting the first guide pin 23 with the outer surface that constitutes the outer side of the bend of the wire 5, and then the inner side of the bend of the wire 5. The inner side surface of the wire 5 contacts the second guide pin 24 and is guided, and the outer surface of the wire 5 outside the bend contacts the third guide pin 25 and is guided to form a curl. And sent to the lower guide 19. After being guided by the first guide pin 23, the wire 5 is inserted through the wire through hole 17 of the fixed blade 14 of the wire cutting mechanism 11 before coming into contact with the second guide pin 24, and then the second guide pin 24 is inserted. It is sent to the guide pin 24. The tip of the wire 5 is guided by the first guide pin 23 and the second guide pin 24, and then is fed so as to slide along the guide surface 21 of the curl guide 12, and then the third guide pin. It comes in contact with 25 and has a strong bending tendency.

As described above, the curling mechanism includes the first guide pin 23 to the third guide pin 25 arranged on the wire feeding path, and the wire 5 includes the first guide pin 23 and the second guide pin 23. The pin 24 and the third guide pin 25 are brought into contact with each other to impart a curl. Conventionally, the wire 5 is attached to a portion worn by contact with the wire 5 such as the guide path 8e of the guide portion (guide tube) 8 of the wire 5, the wire through hole 17 of the fixed blade 14 and the guide surface 21 of the curl guide 12. It's almost never touched.

As described above, when the wire 5 is fed from the guide portion (guide tube) 8, the first guide pin 23 is arranged at the tip of the guide portion (guide tube) 8, so that the guide portion (guide tube) is provided. It is guided by the first guide pin 23 and passes through the wire through hole 17 of the fixed blade 14 with almost no contact with the tip end of the fixed blade 8. In addition, since the first guide pin 23 and the second guide pin 24 guide the outer side surface and the inner side surface of the wire 5 in contact with each other, the feeding is performed accurately and the first guide pin 23 and Since the fixed blade 14 of the wire cutting mechanism 11 arranged on the wire feeding path is provided between the second guide pins 24, the wire 5 should contact the inner surface of the wire through hole 17 of the fixed blade 14. Sent without. Then, the wire 5 is fed while rubbing the guide surface 21 of the curl guide 12, and then contacted and guided by the third guide pin 25 to be strongly bent.

In this way, in the reinforcing bar binding machine 1, the wire 5 contacts the first to third guide pins 23 to 25, but the guide path 8e of the guide portion (guide tube) 8 and the wire through hole 17 of the fixed blade 14 and Since it hardly contacts the guide surface 21 of the curl guide 12, the guide portion (guide tube) 8, the fixed blade 14, and the curl guide 12 are not worn, and the durability is greatly improved. In the conventional reinforcing bar binding machine, the wire is repeatedly contacted with the guide path 8e of the guide portion (guide tube) 8, the wire through hole 17 of the fixed blade 14, or the guide surface 21 of the curl guide 12, and is easily worn. When worn down, the curl diameter is affected, but such an adverse effect is unlikely to occur in the reinforcing bar binding machine 1.

Further, since the wire cutting mechanism 11 is arranged next to the first guide pin 23, the length of the initial position of the wire 5 protruding from the guide portion (guide tube) 8 is as shown in FIG. It is a relatively straight and short distance up to 11, and for example, the distance that becomes an obstacle when pulling out the wire 5 from the wire path of the guide portion 6 for removing the wire reel 4 at the time of maintenance is short and easy to pull out. Furthermore, when the wire 5 is fed from the guide portion (guide tube) 8 onto the wire path of the guide portion 6 when the wire 5 is inserted, the tip of the wire 5 is brought into contact with the guide surface 21 of the curl guide 12 as shown in FIG. The wire path is relatively straight until it abuts. Therefore, since the wire through hole 17 of the wire cutting mechanism 11 is arranged on this straight wire path, the wire 5 can be easily fed when the wire 5 is inserted.

A seventh embodiment of the wire winding mechanism provided on the guide portion 6 will be described below.

As shown in FIG. 11, in the reinforcing bar binding machine 1, the third guide member 25 is arranged on the curl guide 12, and the cutting portion 14 of the wire cutting mechanism 11 includes the guide portion (guide tube) 8 and the first guide member 23. The wire cutting mechanism 11 is arranged so that the wire 5 sent from the wire outlet at the end of the guide part (guide tube) 8 is cut by the cutting part 14 of the wire cutting mechanism 11. The guide members 23 to 25 are formed of guide pins and are attached as described above, and thus the description thereof will be omitted.

The first guide pin 23 is provided apart from the end of the guide portion (guide tube) 8. The third guide pin 25 is arranged inside the tip of the curl guide 12, and is attached so as to project slightly inward from the guide surface 21 of the curl guide 12. The second guide pin 24 is provided approximately in the middle of the first guide pin 23 and the third guide pin 25. The cutting portion 14 of the wire cutting mechanism 11 is provided substantially in the middle of the guide portion (guide tube) 8 and the first guide pin 23.

The wire 5 delivered from the guide portion (guide tube) 8 is guided by contacting the outer surface of the wire 5 that constitutes the outer side of the bend of the wire 5 with the first guide pin 23, and then constitutes the inner side of the bend of the wire 5. The inner side surface that contacts the second guide pin 24 is guided and the outer side surface that constitutes the outer side of the bending of the wire 5 is contacted and guided by the third guide pin 25 to impart a curl. It is sent to the lower guide 19. The wire 5 delivered from the guide portion (guide tube) 8 is inserted into the wire through hole 17 of the fixed blade 14 of the wire cutting mechanism 11 before coming into contact with the first guide pin 23, and then the first guide pin Sent to 23. The tip of the wire 5 is guided by the first guide pin 23 and the second guide pin 24, and then is fed so as to slide along the guide surface 21 of the curl guide 12, and then the third guide pin. It comes in contact with 25 and has a strong bending tendency.

As described above, the curling mechanism includes the first guide pin 23 to the third guide pin 25 arranged on the wire feeding path, and the wire 5 includes the first guide pin 23 and the second guide pin 23. The pin 24 and the third guide pin 25 are brought into contact with each other to impart a curl. Conventionally, the wire 5 is attached to a portion worn by contact with the wire 5 such as the guide path 8e of the guide portion (guide tube) 8 of the wire 5, the wire through hole 17 of the fixed blade 14 and the guide surface 21 of the curl guide 12. It's almost never touched.

As described above, when the wire 5 is sent out from the guide portion (guide tube) 8, the wire 5 hardly contacts the tip of the guide portion (guide tube) 8 and is disposed on the wire feeding path. Passing through the wire through hole 17 of the fixed blade 14 and being guided by the first guide pin 23, the second guide pin 24, and the third guide pin 25, the first guide pin 23 and the second guide pin Since the outer side surface, the inner side surface, and the outer side surface of the wire 5 are guided in contact with each other by the guide wire 24 and the third guide pin 25, the feeding is accurately performed. Therefore, the wire 5 is sent with almost no contact with the inner surface of the wire through hole 17 of the fixed blade 14. Then, the wire 5 is fed while rubbing the guide surface 21 of the curl guide 12, and is strongly bent.

As described above, in the reinforcing bar binding machine 1, the wire 5 contacts the first to third guide pins 23 to 25, but the guide path 8e of the guide portion (guide tube) 8 and the wire through hole 17 of the fixed blade 14 and Since it hardly contacts the guide surface 21 of the curl guide 12, the guide portion (guide tube) 8, the fixed blade 14, and the curl guide 12 are not worn and the durability is improved. In the conventional reinforcing bar binding machine, the wire is repeatedly contacted with the guide passage 8e of the guide portion (guide tube) 8, the wire through hole 17 of the fixed blade 14, or the guide surface 21 of the curl guide 12, and is easily worn. When worn down, the curl diameter is affected, but such an adverse effect is unlikely to occur in the reinforcing bar binding machine 1.

Further, since the wire cutting mechanism 11 is arranged next to the guide part (guide tube) 8, the length of the initial position of the wire 5 protruding from the guide part (guide tube) 8 is as shown in FIG. The distance to the mechanism 11 is short, and for example, the distance that becomes an obstacle when pulling out the wire 5 from the wire path of the guide portion 6 for removing the wire reel 4 at the time of maintenance is short, and there is no obstacle member other than the wire cutting mechanism 11. Easy to pull out. Further, in the seventh and ninth embodiments, the wire cutting mechanism 11 is independently provided outside the region of the first to third guide pins 23 to 25 of the winding mechanism on the wire feeding path of the guide portion 6. Since the curling of the wire 5 is not directly affected by the curling mechanism, the curling of the wire 5 is easy.

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

T Trigger 1 Reinforcing bar binding machine 2 Binding machine body 3 Storage room 4 Wire reel 5 Wire 6 Guide part 7 Reinforcing bar 8 Guide side guide part (guide tube)
8a Top of tip (end)
8b Lower tip 8c Rear end 8d Tip (wire exit)
8e Guideway 9 Main body side guide part (guide tube)
9p One end 9s Other end 10 Wire feed gear 11 Wire cutting mechanism (guide member)
12 curl guide 13 guide frame 13a frame plate 13b frame plate 13p curved portion 14 fixed blade (cutting portion)
15 movable blade 15a wire insertion hole 15b wire entry port 15c wire discharge port 16 drive lever 17 wire through hole 17a wire inlet 17b wire outlet 19 lower guide 20 guide groove 21 guide surface 22 curl pick-up guide 23 first guide pin (first 1 guide member)
24 Second Guide Pin (Second Guide Member)
25 Third Guide Pin (Third Guide Member)
26 holes 31 wire cutting mechanism (guide member)
32 Fixed blade (cutting part)
33 Movable Blade 34 Wire Through Hole 35 Wire Inlet 36 Wire Outlet 37 Link Mechanism 38 One Side 41 Wire Cutting Mechanism 42 Fixed Blade 43 Movable Blade 46 Swing Arm 47 Spindle

Claims (5)

The wire reel can be removably attached, and the wire is pulled out from the attached wire reel and sent to the guide part provided at the tip of the binding machine body, and the guide part gives a winding tendency to the inside of the guide part. In a reinforcing bar binding machine for sending out around arranged reinforcing bars, winding around the cutting bars and cutting them, and twisting the wire to bind the reinforcing bars,
The guide part has
A guide part that guides the feeding of the wire from the wire reel,
A cutting part for cutting after feeding a predetermined amount of wire,
A curl guide that guides the sent wire to curl,
It is disposed in order from the guide portion, and the first guide member in contact with the outer surface of the outer side of bending of the wire Ru curled wire, in contact with the inner surface of the inner bend of the wire of the wire and a second guide member which Ru is curled, in contact with the outer surface of the outer side of bending of the wire and the third guide member Ru curled wire,
The reinforcing bar binding machine, wherein the third guide member is a cutting portion. The wire reel can be removably attached, and the wire is pulled out from the attached wire reel and sent to the guide part provided at the tip of the binding machine body, and the guide part gives a winding tendency to the inside of the guide part. In a reinforcing bar binding machine for sending out around arranged reinforcing bars, winding around the cutting bars and cutting them, and twisting the wire to bind the reinforcing bars,
The guide part has
A guide part that guides the feeding of the wire from the wire reel,
A cutting part for cutting after feeding a predetermined amount of wire,
A curl guide that guides the sent wire to curl,
It is disposed in order from the guide portion, and the first guide member in contact with the outer surface of the outer side of bending of the wire Ru curled wire, in contact with the inner surface of the inner bend of the wire of the wire and a second guide member which Ru is curled, in contact with the outer surface of the outer side of bending of the wire and the third guide member Ru curled wire,
The reinforcing bar binding machine, wherein the second guide member is a cutting portion. The wire reel can be removably attached, and the wire is pulled out from the attached wire reel and sent to the guide part provided at the tip of the binding machine body, and the guide part gives a winding tendency to the inside of the guide part. In a reinforcing bar binding machine for sending out around arranged reinforcing bars, winding around the cutting bars and cutting them, and twisting the wire to bind the reinforcing bars,
The guide part has
A guide part that guides the feeding of the wire from the wire reel,
A cutting part for cutting after feeding a predetermined amount of wire,
A curl guide that guides the sent wire to curl,
It is disposed in order from the guide portion, and the first guide member in contact with the outer surface of the outer side of bending of the wire Ru curled wire, in contact with the inner surface of the inner bend of the wire of the wire and a second guide member which Ru is curled, in contact with the outer surface of the outer side of bending of the wire and the third guide member Ru curled wire,
The reinforcing bar binding machine, wherein the first guide member is a cutting portion. At least one of a 1st guide member, a 2nd guide member, and a 3rd guide member is a guide pin, The reinforcing bar binding machine of any one of Claim 1 thru|or 3 characterized by the above-mentioned. The reinforcing bar binding machine according to claim 2 or 3, wherein the third guide member is arranged in the curl guide or in the vicinity of the curl guide.