JP2844681B2 - Stringing device in tying device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a tying device that passes an end of a stored string to a tying device before tying work in the tying device.

(Prior Art) Conventionally, Japanese Utility Model Laid-Open Publication No. 57-146840 discloses a stowed wire, a string brake device that acts on a tying string to apply a brake, and a tying string is manually engaged with the wire. And a hand-operated switch for reversing the feeding device when the feeding of the wire is completed is described.

(Problem to be Solved by the Invention) The stringing device in the known binding device has a problem in that each operation is a manual operation or a manual operation. In other words, in order to prevent a binding error, a string brake device is provided that provides a certain resistance when the string is pulled out by the binding device. Then, two operations or two operations of returning to the working state after passing the string are necessary,
There is a problem in that it is very troublesome to pass through a complicated intricate gap up to the binding portion by the string bundle.

(Object of the Invention) The present invention automates the entire stringing operation and the entire operation of passing the leading end of the string before the tying operation to the tying device, thereby facilitating the operation.

(Means for Solving the Problems) Accordingly, the present invention provides a wire 20 in a retracted state reaching the binding portion 11 to pass the end of the bundling strap 16 in the housed state.
A string brake device 30 that acts on the tying string 16 to apply a brake during the tying operation, and a wire feeding device 21 that automatically feeds out the wire 20 when the string braking device 30 is in a non-operating state, and passes the string. A detecting body 48 that detects the completion of the automatic feeding of the wire 20 and reverses the wire feeding device 21 to put the wire 20 in the stored state, and the string brake device 30 is provided by the completion of the reverse rotation of the wire feeding device 21. This is a stringing device in a tying device configured to be automatically operated.

(Embodiment) One embodiment of the present invention will be described with reference to the drawings. 1 is a body of a binder, 2 is a prime mover provided behind the body 1, 3 is a walking operation handle, and 4 is a mowing unit provided in front of the body 1. It is.

At the tip of the cutting unit 4, a weed body 5 is provided, and at the rear of the weed body 5, a cereal stem raising device 6 is provided to raise the cereal stem.

Reference numeral 7 denotes a cutting blade for cutting the root portion of the raised culm, 8 denotes a conveying device for sending the cut culm to the side, and a binding unit 11 is provided below the end of the conveying device 8. 12 is a transmission case,
The transmission case 12 is provided with a packer 15 for pressing the grain stem against the T-projection 14 by the shaft 13, and a T-projection is provided above the packer 15.
A needle 17 for tying the cereal stalk pressed to 14 with a tying string 16 is provided.

Reference numeral 18 denotes a string case for storing the binding strap 16, which is mounted and fixed on the upper surface of the center of the body 1, and accommodates the roll-shaped binding strap 16 in the strap case 18. A wire feeding device 21 for a wire 20 for passing the tying string 16 through a tying string guide tube 19 is provided on a side portion of the lace case 18. The tip of the tying string guide tube 19 is made to face a position near the needle 17.

The wire feeding device 21 stops the gear 23 that rotates in the horizontal axis in the box 22, and meshes the gear 24 with the lower portion of the gear 23.
The gear 24 is fixed to the shaft 26 of the motor.

A coil 27 is wound and fixed around the entire length of the wire 20, and the coil 27 is meshed with the upper portion of the gear 23. When the motor 25 is rotated forward and backward, the wire 20 is moved in and out by a coil 27 meshing with the gear 23.

Reference numeral 28 denotes a locking hook that locks the tip of the binding cord 16 provided at the tip of the wire 20.

As shown in FIG. 4, on the front side of the box 22, an engaging device 29 for engaging the locking hook 28 of the wire 20 with the tying string 16 is provided. The engagement device 29 is formed on a square tube, has an insertion hole through which the wire 20 is passed on the front and rear surfaces, and has L-shaped insertion grooves on the left and right side surfaces. When the strap 20 is passed through the insertion groove and the wire 20 is extended, the locking hook 28 of the wire 20 is engaged with the strap 16.

A string brake device 30 is provided on the front side of the engagement device 29. The string brake device 30 is provided with an underframe 31 in the left-right direction so as to be orthogonal to the passage of the binding strap 16, and a brake plate 32
And the binding strap 16 is elastically held in the up-down direction by the upper surface of the underframe 31 and the lower surface of the brake plate 32.

The brake plate 32 is bent 33 upward on the base side from the center to form a contact portion 34, and is formed in an inverted letter shape in front view,
A long notch groove 35 is formed in the front end side of the brake plate 32 in the left-right direction, and the notch groove 35 is engaged with a guide character 36 provided on the upper surface of the underframe 31.

A spring 37 is provided at the center of the brake plate 32, and the spring 37 urges the lower surface of the distal end of the brake plate 32 so as to elastically contact the upper surface of the underframe 31. The spring 37 is attached to the underframe 31 by a bolt 38, and the elasticity thereof can be adjusted by the bolt 38.

A cam 39 contacts the upper surface of the contact portion 34 of the brake plate 32. The cam 39 is fixed to a shaft 40 in the front-rear direction, and the shaft 40 is fixed to bearing plates 41, 41 fixed to the underframe 31.

A base of a brake release lever 42 is fixed to a rear end of the shaft 40 projecting rearward from the bearing 41. The brake release lever 42 is rotatable between a brake operation position in an inclined state and a substantially horizontal brake non-operation position.

When the brake release lever 42 is pushed downward to a substantially horizontal position where the brake is not applied, the shaft 40 is rotated, and the rotation of the shaft 40 causes the cam 39 to move downward with the contact portion 34 of the brake plate 32 as a fulcrum about the bent portion 33. The brake plate is pushed by the so-called dead center
The wire 32 is stopped at a non-operating position away from the underframe 31, and the wire 20 is passed therethrough.

A loosening spring 43 is provided between the brake plate 32 and the string guide tube 19. The loosening spring 43 is connected to the front bearing plate 41.
Fix to the protruding part of the shaft 40, and release the brake
When the brake plate 32 is released by operating the brake lever 32, the brake plate 32 is moved to the standby position on the extension of the payout path of the wire 20 in conjunction with the release, and when the brake release lever 42 returns to the original position, the working position is moved in conjunction with the release position. Becomes

Thus, when the wire feeding device 21 pushes the brake release lever 42 downward to bring the brake plate 32 to the non-operating position, the motor 25 automatically rotates forward to automatically rotate the motor 25 forward.
20 is guided to tie the tying string 16, and when the tying of the tying string 16 is completed, the motor 25 is automatically rotated in reverse to
Only, the brake release lever 42 is returned to the original position, and the brake plate 32 of the string brake device 30 is returned to the operating position.

An arm 44 interlocking with the brake release lever 42 is fixed to the shaft 40, and an on / off switch 45 for turning on / off the motor 25 of the wire feeding device 21 is provided above the tip of the arm 44. The on / off switch 45 operates the brake release lever 42 to turn on the motor 25 when the arm 44 comes into contact, and turns off the motor 25 when the arm 44 separates.

At the end of the wire 20, a coil 27 of the wire 20
A cylindrical engagement body 46 having a larger diameter is provided. In the passage 47 of the wire 20 formed in the upper rear part of the box 22, a detector 48 is provided.
Is provided. When the wire 20 is extended and the engaging body 46 abuts, the detector 48 detects the completion of the extension of the wire 20 and rotates the motor 25 in the reverse direction.

In the passage 47 of the box 22 of the wire feeding device 21,
The base 50 of the storage tube 49 of the wire 20 is connected.
The storage tube 49 is formed in a horizontal U shape.
Is bent upward and attached to the bearing plate 41 of the string brake device 30.

The tip of the rotating arm 52 faces above the tip 51 of the storage tube 49. The base of the rotating arm 52 is attached to the shaft 40, and when the wire 20 is stored, the storage tube
49 is automatically pushed up by the engagement body 46 of the wire 20 protruding from the tip 51, rotates the shaft 40, returns the brake release lever 42, and releases the brake release lever.
The arm 44 is separated from the on / off switch 45 to stop the motor 25.

(Operation) Next, the operation will be described.

Since the present invention has the above configuration, the tying cord 16 is
4, the brake release lever 42 is pushed downward, and the brake release lever 42 rotates the shaft 40, the shaft 40 rotates the cam 39, and the cam 39 is a string brake device.
The contact portion 34 of the brake plate 32 of FIG. 30 is pressed downward against the elasticity of the spring 37 with the bent portion 33 as a fulcrum, and the cam 39 pushes the lower surface of the leading end of the brake plate 32 to Is moved upward with respect to the upper surface of the device to maintain the inoperative position.

Further, the tip of the loosening spring 43 is moved down by the rotation of the shaft 40 to be positioned at a standby position on the extension of the passage of the tying string 16, and the arm 44 is turned to turn on the on / off switch 45. .

When the on / off switch 45 is turned on, the wire feeding device 21 is turned on.
Motor 25 rotates forward, and this rotation is transmitted to the shaft 26 → gear 24 → gear 23 and the coil of the wire 20 meshing with the gear 23
When the hook 20 of the wire 20 passes through the engaging device 29, the tip of the binding cord 16 set on the engaging device 29 is hooked, and the wire 20 is further fed. When it is released, it passes below the brake plate 32 in the non-operation position, passes through the loosening spring 43, and passes through the string guide tube 19 to the needle.
Guided to 17.

When the locking hook 28 of the wire 20 is guided to the needle 17 and the feeding of the wire 20 is completed, the engaging body 46 provided at the end of the wire 20 comes into contact with the detecting body 48 provided in the passage 47 of the box 22, and the detection is performed. The body 48 detects the completion of the feeding of the wire 20 and reversely rotates the motor 25 to automatically store the wire 20.

When the storage of the wire 20 is completed, the engagement body 46 at the end of the wire 20 protrudes from the distal end 51 of the storage tube 49, and automatically moves the rotating arm 52 upward.

Since the rotation arm 52 is attached to the shaft 40, the rotation of the rotation arm 52 causes the shaft 40 to rotate. When the shaft 40 rotates, the cam 39 releases the above-mentioned operation beyond the dead center,
The contact portion 34 of the brake plate 32 is returned to the operating position by the elastic force of the spring 37.

When the contact portion 34 of the brake plate 32 returns to the operating position due to the elastic force of the spring 37, the cam 39 contacting the contact portion 34 rotates, further rotating the shaft 40, and moving the loosening spring 43 to the operating position. And the brake release lever 42 is returned to the original position.

The arm 44 rotates by the rotation of the shaft 40, and an on / off switch
The on / off switch 45 stops the motor 25 because it is separated from 45.

In this state, when the machine is advanced, the culm is weeded by the weeding body 5, raised by the cereal stem raising device 6, cut by the cutting blade 7, transported by the transport device 8, and transported by the packer. 15 presses against the T-projection 14, and the grain stalk pressed against the T-projection 14 is bound by the needle 17.

(Effects) Conventionally described in Japanese Utility Model Publication No. 57-146840, a wire in a housed state, a string brake device that acts on a tying strap to apply a brake, and a tying strap is manually attached to the wire. Since it is a stringing device in a binding device comprising a dispensing device for engaging and dispensing, and a manual switch for reversing the dispensing device when the dispensing of the wire is completed, each operation is a manual operation or a manual operation and is troublesome. Met.

However, according to the present invention, the wire which is in the retracted state and reaches the binding portion 11 to pass the end of the binding strap 16 in a bundled state is provided.
20, a string brake device 30 that acts on the tying strap 16 to provide a brake during the tying operation, and a wire feeding device 21 that automatically feeds out the wire 20 when the strap braking device 30 is in a non-operating state. A detection body 48 that detects the completion of the automatic feeding of the wire 20 and reverses the wire feeding device 21 to put the wire 20 in the housed state, and the string brake device 30 completes the reverse rotation of the wire feeding device 21. Since it is a stringing device in a binding device that is configured to be automatically activated by the above, a. When the string brake device 30 is deactivated, the wire 20
Can be automatically fed by the feeding device 21, and the operation of the feeding device 21 for the wire 20 becomes unnecessary.

B. Since the completion of the automatic feeding of the wire 20 can be detected by the detecting body 48, the end of the stringing operation can be confirmed, whereby the feeding device 21 can be reversed and the wire 20 can be automatically stored.

C. The string brake device 30 is configured to be automatically operated when the reverse rotation of the feeding device 21 is completed. Therefore, when the stringing is completed, the subsequent operation is unnecessary, and the binding work can be immediately performed. .

This has the effect.

[Brief description of the drawings]

1 is a plan view, FIG. 2 is a side view, FIG. 3 is a cross-sectional view of a wire feeding device, FIG. 4 is a plan view of the same, FIG. It is a front view of the opened state of the string brake device. DESCRIPTION OF SYMBOLS 1 ... fuselage, 2 ... motor, 3 ... walking steering handle,
4 ... cutting part, 5 ... weeding body, 6 ... grain stem raising device, 7
… Cutting blade, 8… Carrier, 11… Binding part, 12… Transmission case, 13… Shaft, 14… T-projection, 15… Packer, 16
...... Bundling string, 17 ... Needle, 18 ... String case, 19 ...
Tie string guide tube, 20 wire, 21 wire feeding device, 22 box, 23, 24 gear, 25 motor
26 ... shaft, 27 ... coil, 28 ... locking hook, 29 ... engaging device, 30 ... string brake device, 31 ... underframe, 32 ... brake plate, 33 ... bending, 34 ... … Contact part, 35 …… Guide shaft, 36
…… notched groove, 37 …… spring, 38 …… bolt, 39 …… cam,
40: Shaft, 41: Bearing plate, 42: Brake release lever,
43 ... loosening spring, 44 ... arm, 45 ... on / off switch, 46 ... engagement body, 47 ... passage, 48 ... detection body, 49 ...
Storage tube, 50: Base, 51: Tip, 52: Rotating arm.

Claims (1)

(57) [Claims] 1. A wire brake device which is in a stored state and is in a state of being extended to a binding portion 11 in order to pass an end portion of a binding strap 16 in a bundle shape, and a strap brake device which acts on the binding strap 16 to provide a brake during a binding operation. 30; a wire feeding device 21 for automatically feeding the wire 20 when the string brake device 30 is deactivated; and a wire feeding device 21 for detecting completion of automatic feeding of the wire 20 and reversing the wire feeding device 21. A stringing device in a binding device, comprising a detector 48 for causing the wire 20 to be in a stored state, and the string brake device 30 being automatically activated when the wire feeding device 21 completes reverse rotation.