JPS5832938B2 - Asshole - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a binding machine for binding stalks of rice, wheat, etc., and aims to simplify the structure of a needle drive unit.

Embodiments of the invention will be described based on illustrative drawings.

A tying machine A is constructed by arranging a string supplying part a having a needle 1, a packer 2, etc., and a knotting part having a bill 3, a holder 4, etc. across a convergence space on a deck 5. 1
As shown in the figure, a constantly rotating packer drive shaft 7 and an idle rotating door shaft 8 are protruded from the upper surface of the binding machine frame 6,
The base and middle portion of the packer 2 are pivotally connected by a crank 9 constituting an eccentric drive section at the upper end of the packer drive shaft 7 and a swing link 10 loosely fitted to the door shaft 8, and these cranks rotate 90 times. The packer 2 is constructed so as to make a raking motion drawing a constant trajectory by the combined movement of the movement and the swinging of the swinging link 10, and the swinging arm 1' of the needle 1 is attached to the upper end of the door shaft 8. The crank 901 for driving the packer 2 provided on the packer drive shaft 7 is pivoted in an idle rotation state, and the rotational movement of the crank 901 for driving the packer 2 is controlled by the door shaft 8 of the needle 1.
An interlocking mechanism B is provided to convert the movement into a reciprocating rocking motion around the surroundings, and a check mechanism C is provided to switch the interlocking mechanism B between a state in which the crank 9 and the needle 1 are interlocked and a state in which they are not interlocked. A detection mechanism is provided to detect when the amount of stem culm convergence has exceeded a certain level, and the check mechanism C is switched in conjunction with the detection operation by this detection mechanism, thereby preventing the rotational movement of the crank 901. It is constructed so as to be intermittently converted into a reciprocating rocking motion of the needle 1, and is constructed as a needle-driven type in which the knot is directly driven by the needle 1.

In the illustrated structure, the interlocking mechanism B is configured as follows.

As shown in FIG. 3, the swinging arm 1' of the needle 1 is provided with an arcuate groove 12 centered on the door shaft 8 and an engagement recess 12' continuous to one end of the arcuate groove 12. Alternatively, the other end of a link 14 having a pitman pin 13 at one end that fits into the recess 12' is pivotally connected to a crank pin 15 protruding from the tip of the crank 9, and between this link 14 and the door shaft 8, A tension spring 16 is interposed to bias this link 14 in a direction in which the pitman pin 13 engages with the recess 12', thereby causing the movement of the 51J link 14 as the packer drive shaft 70 rotates. With this, the swinging arm 1' is pushed and pulled while the pitman pin 13 is engaged with the recess 12', and the needle 1 is reciprocated around the door shaft 8.

In the illustrated structure, since the swinging arm 1' of the needle 1 is provided with the arcuate groove 12 that allows the Pitman pin 13 to slide directly, the base of the swinging arm 1' is connected to the string supply arm of the needle 1. It has a bulging shape on the side.

Therefore, as shown in FIG. 4, by designing the base of the swinging arm 1' to be as small as possible, or by designing the length of the swinging arm 1' to be long, the swinging arm 1' In order to prevent the bulge tip 1'' at the base of the bulge from interfering with the stem culm in the focusing space, it is necessary to design the convergence space to be formed outside the rotation locus of the bulge tip 1''.

The check mechanism C has the following configuration.

As shown in FIGS. 1 and 3, a restraining surface A is provided near the upper end of the door shaft 8 to abut against the pitman pin 13 and prevent the pin 13 from fitting into the recess 12'; A gear 18 is integrally provided with a restraining piece 17 having a cam face opening that pushes out the cam surface from the recess 12' toward the arcuate groove 12 side against the pull spring 16. A gear 19 that constantly meshes with the door shaft 8 is fixed.
When the door 20 fixed to the door 20 is pushed into the focusing space by the force of a spring (not shown), the pitman pin 13 is fitted into the recess 12' by the restraining surface A of the restraining piece 17 on the upper surface of the gear 18. Thus, as shown in FIG. 3, the pitman pin 13 is configured to slide within the arcuate groove 12 and its movement is not transmitted to the needle 1, and the door 20 is prevented from resisting a spring (not shown). When the door shaft 8 is rotated by swinging, the gear 19
, the restraint piece 17 is rotated via the gear 18 to release the restraint by the restraint surface A, the pitman pin 13 is fitted into the recess 12', and the motion of the pitman pin 13 is transmitted to the needle 1. In addition, when the needle 1 swings back after the door 20 swings back, the pitman pin 13 rides on the cam surface opening of the restraining piece 17 and is pushed out from the recess 12' toward the arcuate groove 12. This is what I did.

Reference numeral 21 denotes a support shaft of the gear 18, which projects directly from the binding machine frame 6, but may also project from the frame 6 via a stay of an appropriate shape.

Note that the check piece 17 is configured to return to its original position before the needle 1 returns to its swinging motion, and is designed to operate slightly later than the forward swinging motion of the needle 1. A release arm (not shown) whose timing is interlocked with 1 releases the bundled stem culm to release the pressure of the stem culm applied to the door 20, and the door 20 is moved by the force of a spring (not shown) so that the needle 1 swings back as appropriate. This can be achieved by setting the timing.

The detection mechanism is also used by the door 20 that receives the focused stem culm, but there is also a method that uses a sensing lever separate from the door 20 or a counter that measures the amount of feeding of the binding string and the number of times the packer 2 is operated. It is also possible to implement a one-sided detection mechanism.

The specific structure of the knot is as follows.

As shown in FIG. 4, two ranks 22 and 23 with different rotation radii and phases are provided on the side of the needle 1, and each rack 22, 23 is loosely fitted to the support shaft 24 of the building 3. A gear 25 and a passive gear 27 loosely fitted to the support shaft 26 of the holder 4
and each passive gear 2 is configured to drive and rotate.
5, 27 and each support shaft 24, 26, one-way rotation clutches 28, 29 are provided, and only when the needle 1 swings forward,
The structure is such that the building 3 and the holder 4 are driven to rotate sequentially with a timing lag to perform the joint operation.

It should be noted that it may be a knot configured so that the building 3 and the holder 4 are rotated by the backward swinging of the needle 1.
It is also possible to implement a joint portion having a structure in which the building 3 and the holder 4 are sequentially driven to rotate with a timing lag in the same rack.

According to the above configuration, when the power of the engine (not shown) is transmitted to the input sprocket, the packer drive shaft 7 constantly rotates in one direction, so that the packer 2 performs a raking motion of the stem culms and focuses the stem culms within the focusing space.

In this state, the pitman pin 13 is moved via the link 14 pivotally connected to the crank pin 15, and the pitman pin 13 is fitted into the recess 12' by the restraining surface A of the restraining piece 17. Since the needle 1 is prevented from sliding in the arcuate groove 12, the needle 1
remains stationary.

When the focused culms reach a predetermined amount, the door 20 is pressed and swings backward against a spring (not shown) to rotate the door shaft 8 and the gear 19.
rotates and releases the restraint of pitman pin 13.

As a result, the Pitman pin 13 is fitted into the recess 12', so the movement of the Pitman pin 13 is transmitted to the needle 1, causing the needle 1 to swing back and forth once.
The racks 22, 23 and the passive gear 2
5° 27, the building 3 and the holder 4 are driven to rotate to perform the knotting operation, and the tied stem culm is released out of the focusing space by a release arm (not shown).

Due to this release, the door 20 swings back to its original position, and the gear 19 is reversed, so the check piece 17 returns to its original position via the gear 18, and when the needle 1 swings back, the pitman pin 13 rides on the cam face opening of the restraining piece 17 and is pushed out from the recess 12' against the tension spring 16, and the interlocking movement between the needle 1 and the crank 9 is cut off.

Therefore, the above configuration eliminates the need for an opening drive system using a one-rotation clutch that drives the needle 1 and the knot intermittently, and furthermore, since the packer 2 and needle 1 are driven by the same crank 9, the structure is extremely simple. It is simplified.

5 and 6 show another embodiment.

As shown, the packer 2 on the packer drive shaft 7 and the door shaft 8, the needle 1, the door 18, the interlocking mechanism B, and the check mechanism C.
etc., are the same as the structure shown in FIG. 1, so their explanation will be omitted.

In this case, the knot is not driven by a needle, but is driven by a timing gear 31 at the upper end of a drive shaft 30, and an intermittent drive system for this knot and a forced drive system are included in the binding case 32. The structure differs from the one shown in FIG. 1 in that a constant drive system for driving the lifting claw-equipped chain of the lifting device is included.

The intermittent drive system is configured as follows.

That is, in the binding case 32, a one-turn clutch 34 is provided on the packer drive shaft 7, an operating piece 35 for turning the clutch is provided on the door shaft 8, and the driven sprocket 36 of the one-turn clutch 34 and the connecting portion are provided. The chino is carried across the sprocket 37 on the drive shaft 30 that drives the chino.

As shown in FIG. 6, the one-turn clutch 34 has a transmission protrusion 38 fixed to the packer drive shaft 7, and a cam plate 41 on which a driven protrusion 39 that moves in and out of the rotation locus is pivoted 40. An operating piece 35 integrated with the door 20 locks the driven protrusion 39 and swings it around the shaft 40 against the spring 42, thereby separating the driven protrusion 39 from the rotation locus of the transmission protrusion 38 and starting the clutch disengagement. Then, the door 20 swings under the pressure of the focusing culm, and the operating piece 35 and the driven protrusion 39
By releasing the lock, the driven protrusion 39 is swung within the rotation locus of the transmission protrusion 38 by the spring 42, and the clutch is engaged and activated.

Reference numeral 43 denotes a regulating piece that is loosely fitted to the door shaft 8. A tension spring 44 is interposed between this and the operating piece 35, and a roller 45 is pivotally supported at the tip of the regulating piece 43 to prevent the circumferential surface of the cam plate 410. The position of the door 20 is thereby regulated.

The curved surface of the cam plate 41 has an arcuate portion C and a cutout portion, and by pressing the roller 45 against the arcuate portion C, the door 20 is regulated in the posture of receiving the converging culm, and the release arm (not shown) is At the point when the culm is released, the cam plate 410
With rotation, the notch portion comes to a position corresponding to the roller 45, and when the tied stem culm pushes open the door 20 and passes outward, the door 20 is shaken greatly without straining the tension spring 44. It is constructed so that it can be opened dynamically.

In this embodiment as well, the structure is simplified because the packer 2 and needle 1 are driven by one packer drive shaft 7 and the same crank 9.

Although not shown, an eccentric cam may be used instead of the crank 90.

In summary, the tying machine according to the present invention uses a rotational motion of the eccentric drive section 901 between the eccentric drive section 9 for driving the packer 2 provided on the rotating shaft 7 and the needle 1 to reciprocate the reciprocating swing of the needle 1. An interlocking mechanism B for converting the movement into movement is provided, a check mechanism C is provided for switching the interlocking mechanism B between a state in which the eccentric drive unit 9 and the needle 1 move and a state in which they are not interlocked, and a bundle amount detection mechanism for the focused stem culm. Since the restraining mechanism C is configured to be switched in conjunction with the detection action, the following effects can be obtained.

That is, in conventional binding machines, the packer is driven by a crank, an eccentric cam, etc. fixed to a constantly rotating packer drive shaft, and the packer is intermittently rotated via a one-turn clutch interposed between this drive shaft and the needle drive shaft. Because the needle was reciprocated by a separate crank, the drive structure within the binding machine case, especially the structure of the needle drive section, was complicated.

In this respect, the present invention converts the rotational movement of the eccentric drive unit 901 for driving the packer 2 into the reciprocating rocking movement of the needle 1. The needle 1 and packer 2 can be driven by the rotating shaft, and the structure of the needle drive section can be simplified.

In particular, when the knotting section is made into a needle-driven type as in the embodiment, the entire drive system of the binding machine becomes extremely simple.
It can be made smaller.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the binding machine according to the present invention, and the first
The figure is a longitudinal sectional view, FIGS. 2 and 3 are schematic plan views of the main parts, FIG. 4 is a schematic plan view of the nodule, and FIGS. 5 and 6 are longitudinal sectional views showing another embodiment. FIG. 3 is a schematic plan view of a one-turn clutch. DESCRIPTION OF SYMBOLS 1... Needle, 2... Packer 7... Continuously rotating shaft, 9... Eccentric drive unit, B... Interlocking mechanism, C...
- Check mechanism, D...Bundle amount detection mechanism.

Claims (1)

[Claims] 1. An interlocking mechanism B is provided between the needle 1 and the eccentric drive section 9 for driving the packer 2, which is provided on the constantly rotating shaft 7, and converts the rotational motion of the eccentric drive section 901 into a reciprocating rocking motion of the needle 1.
A checking mechanism C is provided for switching the interlocking mechanism B between a state in which the eccentric drive section 9 and the needle 1 are interlocked and a state in which they are not interlocked, and is interlocked with the detection action of the bundle amount detection mechanism of the converging stem culm. A binding machine configured to switch the check mechanism C.