JPH078082A - Strap holder for binding device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a cord holder for a binding device, even if a foreign substance such as cord waste enters the hole end on the fixed holder side of the insertion hole for the drive rotation shaft of the rotary holder, the foreign substance is spline-fitted. It should be discharged without entering the joint. [Structure] A rotary holder with hook 11b and a fixed holder 11c are provided, and the rotary holder 11b drives the rotary shaft 12
In the cord holder of the binding device, the cord holder is attached to the fixed holder 11c by the spline fitting portion 13 so as to be movable toward and away from the fixed holder 11c, and the spring 14 for urging the rotary holder 11b toward the fixed holder 11c is provided.
In order to form the insertion hole for the drive rotation shaft 12 of b, the hole end portion 21 on the fixed holder 11c side of the spline fitting portion 13 is formed to have a diameter larger than the maximum inner diameter of the spline fitting portion 13. Of the peripheral wall of the hole end portion 21, the rotary holder 11
A cutout portion 22 for discharging a foreign matter is provided in a portion located in the non-clamping action range of b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cord holder used in a knotting and billing type binding device.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional cord holder is composed of a rotary holder 11b with a hook for holding a binding cord s and a fixed holder 11c, and the rotary holder 11b is attached to a drive rotary shaft 12. , A structure in which a spring 14 is fitted to the fixed holder 11c so as to be able to move toward and away from the fixed holder 11c, and a spring 14 for urging the rotary holder 11b in a direction toward the fixed holder 11c is provided.
The insertion hole for the drive rotation shaft 12 of 1b is formed as a spline hole over substantially the entire length. .

[0003]

However, when foreign matter such as string waste enters the hole end portion on the fixed holder side, the foreign matter is not discharged and easily enters the spline fitting portion, and the foreign matter such as infiltrated foreign matter causes the rotary holder to move. There is a possibility that sliding failure may occur and a binding error may occur, and there is room for improvement in terms of improving the reliability of the binding function. An object of the present invention is to allow foreign matter to be discharged without entering the spline fitting portion even if it enters the hole end portion on the fixed holder side, so that good bundling is surely realized.

[0004]

A feature of the present invention is that a rotary holder with a hook for holding a binding cord and a fixed holder are provided, and the rotary holder is used as a drive rotary shaft so that the rotary holder can be moved toward and away from the fixed holder. Attach with spline fitting part,
In a cord holder of a binding device provided with a spring for urging the rotary holder toward the fixed holder, in order to form an insertion hole for the drive rotation shaft of the rotary holder, a hole end portion closer to the fixed holder than the spline fitting portion is formed. Is formed with a diameter larger than the maximum inner diameter of the spline fitting portion, and a foreign matter discharge cutout portion is provided in a portion of the peripheral wall of the large-diameter hole end portion located in the non-clamping action range of the rotary holder. .

[0005]

In other words, since the hole end on the fixed holder side of the spline fitting part of the rotary holder is formed to have a diameter larger than the maximum inner diameter of the spline fitting part, foreign matter will enter the hole end part on the fixed holder side. Even if it enters, it is easy to stay in the hole end without entering the spline fitting part, and for foreign matter discharge to the peripheral wall of the hole end while being located in the non-holding action range of the rotary holder so that it does not adversely affect the holding of the binding string. Since the cutout is provided, the foreign matter remaining at the hole end is discharged to the outside from the cutout as the rotary holder is driven and rotated. It is possible to sufficiently suppress the inconvenient situation that the malfunction occurs and to surely realize good bundling.

[0006]

As a result, it is possible to provide a binding device which is more excellent in the reliability of the binding function, which can sufficiently suppress the sliding failure of the rotary holder due to the foreign matter entering the spline fitting portion and surely realize good binding. It is now available.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a binding device equipped on a walk-behind cutting and binding machine. In order to configure this binding device, a knot portion 2 and a crank driving type discharge arm 3 are provided on the front side of the converging space S, and a packer arm 4 for scraping stalks on the rear side of the converging space S and a binding cord supply. Needle 5 and a focusing pressure sensing door 6 are provided, and the packer arm 4 is provided with the door 6 closed.
Is intermittently rushed into the stem-culm transfer path 7 to push the cutting stems into the converging space S, and when the pressing force on the door 6 reaches a set value, the internal one-turn clutch is activated and scraped. The bunching needle 5 is thrust into the entry space formed by pushing the stem culm by the operated packer arm 4, and the binding cord 9 from the cord holder (not shown) is wound around the focusing culm by the needle 5, and the knot portion 2 is used. The binding strap is tied, and when the knot is completed, the door 6 is opened and the discharging arm 3 discharges the binding stem culm in the lateral direction of the machine body.

As shown in FIGS. 2 and 3, a knot building 10 and a string holder 11 are provided on the knot 2, and the knot string 9 held on the string holder 11 by being wrapped around the bundled stem culm is attached to the knot building 1.
It is configured so as to be bound by the knotting action by the driving rotation of 0 and the binding stem culm releasing action by the releasing arm 3.

The string holder 11 comprises a rotary holder 11b with a hook 11a and a fixed holder 11c connected to the mounting bracket 1. The rotary holder 11b is spline-fitted to the drive rotary shaft 12 supported by the bracket 1. A spring 14 is attached to the drive rotary shaft 12 so as to be integrally rotatable with the joint portion 13 and slidably attached to the fixed holder 11c so as to bias the rotary holder 11b toward the fixed holder 11c. The gear 16 which is interposed between the seat 15 and the rotary holder 11b and integrated with the building 10 and the gear 17 attached to the drive rotary shaft 12 are engaged with the timing gear 18, and one end is held by the rotary holder 11b and the fixed holder 11c. Needle 5
The hook 11 with the binding cord 9 wrapped around the collecting stem culm by
After being held by the rotary holder 11b and the fixed holder 11c by the rotation of a, the portion before the held portion is cut by a cutter (not shown) provided in the rotary holder 11b.

The receiving seat 15 is rotatably and slidably fitted to the drive rotary shaft 12, is screwed onto the drive rotary shaft 12, and is fixed by a lock nut 19.
The position of the receiving seat 15 is set to 0, and a plurality of recesses 15a having different depths are formed in the receiving seat 15 by being dispersed in the circumferential direction. By rotating the receiving seat 15, the plurality of recesses 15a are selectively formed. It is fitted to the protrusion 20a of the fixing nut 20 to adjust the position of the receiving seat 15 in the axial direction of the drive rotating shaft 12, and an appropriate string holding force according to the type of the binding string is applied to the rotary holder 11b.
And the fixed holder 11c.

As shown in FIGS. 3 and 4, in order to form an insertion hole for the drive rotation shaft 12 of the rotation holder 11b,
The hole end portion 21 closer to the fixed holder 11c than the spline fitting portion 13 is formed to have a diameter larger than the maximum inner diameter of the spline fitting portion 13 so that foreign matter such as string waste enters the hole end portion 21. It is configured so that it is easy to stay in the hole end portion 21 without entering the portion 13. Then, a foreign matter discharging cutout portion 22 is provided in a portion of the peripheral wall of the hole end portion 21 located in the non-clamping action range of the rotary holder 11b, and the foreign matter remaining at the hole end portion 21 is driven and rotated by the rotary holder 11b. Accordingly, the notch 22 is discharged to the outside, and the notch 22 does not adversely affect the holding of the binding cord. That is, the sliding failure of the rotary holder 11b due to the foreign matter entering the spline fitting portion 13 is suppressed, and good bundling can be surely realized.

The bundling string supply path to the needle 5 includes:
A string brake 23 is provided to give a proper tension to the binding string. In the cord brake 23, as shown in FIGS. 5 and 6, a support shaft 25 is fixed to a fixed brake plate 24, a movable brake plate 26 is slidably fitted to the support shaft 25, and a fixed brake is provided. A spring 27 for urging the movable brake plate 26 in the direction of approaching the plate 24 is interposed between a receiving seat 28 attached to the support shaft 25 and the movable brake plate 26, and held by the fixed brake plate 24 and the movable brake plate 26. A braking force is applied to the binding cord 9 by the action.

Then, the receiving seat 28 is slidably fitted to the support shaft 25, and is screwed to the support shaft 25 and is fixed between the fixing nut 30 fixed by the lock nut 29 and the receiving seat 28.
A braking force adjuster 32 rotatably attached to a pin 31 penetrating the elongated hole 25a of the support shaft 25 is interposed, and a distance between the first contact edge 32a of the braking force adjuster 32 and the pin 31 is interposed. L ₁ , the second contact edge 32 b of the braking force adjuster 32 and the pin 3
The distance L _{2 of} 1 and the third contact edge 32 of the braking force adjuster 32.
The distance L ₃ between c and the pin 31 is set to be larger as compared with the latter, and the braking force adjuster 32 is rotated to operate the first contact edge 32.
By selectively abutting the a, the second abutting edge portion 32b, and the third abutting edge portion 32c on the receiving seat 28, the position of the support shaft 25 of the receiving seat 28 in the axial center direction is adjusted, and the binding cord. The fixed brake plate 24 and the movable brake plate 26 are configured to exert an appropriate braking force according to the type of 9 and the binding strength. That is, for example, when the binding cord 9 is jute hemp, the first contacting edge portion 32a is brought into contact with the receiving seat 28, and the binding cord 9 is
Is a synthetic resin material (propylene), the second abutment edge portion 32b is brought into contact with the seat 28, and the binding cord 9 is sisal, the third abutment edge portion 32c is brought into contact with the seat 28. It is configured to hit.

[Other Embodiments] The position of the foreign matter discharging cutout 22 may be appropriately changed in the non-clamping action range of the rotary holder 11b, or a plurality of foreign matter discharging cutouts 22 may be formed. The type of the spring 14, the mounting structure, the biasing force adjusting structure, etc. can be changed appropriately. The bundling device can be applied to various harvesters, and may be, for example, a combine for straw bundling.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a plan view of a binding device.

FIG. 2 is a plan view of a knotted portion.

FIG. 3 is a sectional view of the holder.

FIG. 4 is a perspective view of a rotation holder.

FIG. 5 is a sectional view of a cord brake.

FIG. 6 is a view on arrow AA of FIG.

FIG. 7 is a sectional view of a main part of a conventional example.

[Explanation of symbols]

 11a Hook 11b Rotating holder 11c Non-rotating holder 12 Drive rotary shaft 13 Spline fitting part 14 Spring 21 Hole end 22 Notch

Claims (1)

[Claims] 1. A hook (11) for holding a binding cord.
a) With rotating holder (11b) and fixed holder (11)
c), the rotary holder (11b) is attached to the drive rotary shaft (12) by a spline fitting portion (13) so that the rotary holder (11b) can be moved toward and away from the fixed holder (11c), and the rotary holder (11b) is attached. A cord holder of a binding device provided with a spring (14) for urging the fixed holder (11c) toward the approaching direction, wherein the drive rotation shaft (12) of the rotation holder (11b).
The hole end (21) closer to the fixed holder (11c) than the spline fitting part (13) is formed with a diameter larger than the maximum inner diameter of the spline fitting part (13) to form the insertion hole for the spline fitting part (13). Then, a cord holder for a binding device, in which a foreign matter discharge notch (22) is provided in a portion of the peripheral wall of the large-diameter hole end (21) located in the non-clamping action range of the rotary holder (11b). .