JP2644392B2 - General purpose binding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to, for example, cut flowers, green onions,
The present invention relates to a general-purpose binding machine for binding soft and long vegetables such as asparagus and other objects to be bound.

[0002]

2. Description of the Related Art Conventionally, as described in Japanese Utility Model Laid-Open Publication No. 2-45905, there is a binding machine which has a structure in which a binding operation is performed by using a hemp string or a jute string as a binding string. It is widely used as a stalk-and-stem tying device for binders and combines. This binding device has a structure in which a string brake in a state of elastically pressing a pair of plate members is provided in a middle portion of a string fed out from a winding string storage portion by a needle. However, the means of binding soft and long vegetables such as cut flowers, leeks, and asparagus using a hemp string or a jute string as described above may damage the object to be bound if the binding power is increased, When weak force, Oh that material to be bound will loose in subsequent handling
Therefore, it could not be used practically . There
Then, as a method of bundling several objects to be tied as described above,
Using a rubber strap, the binding device of the conventional structure
Although it is conceivable to perform binding, this method has the following disadvantages.

[0003]

In the above-mentioned conventional structure, the string is prevented from being excessively fed out due to the inertia of the string due to the high-speed bundling operation by the pressure contact force of the string brake. However, in this structure, since the pinching force of the string always acts, when binding with a rubber string using such a structure, the rubber material has a large frictional resistance. There is a drawback that the string is not smoothly fed out due to the strong frictional force of the string brake, and the string is extremely tensioned in the binding operation, so that the binding operation cannot be performed. Advantageous Effects of the Invention The present invention makes it possible to effectively use the characteristics of a rubber string, maintain an appropriate tension in a binding operation, and bind an object to be tied with an appropriate tension, and a proper string feeding timing enables a smooth operation. It is an object of the present invention to provide a general-purpose binding machine capable of performing a binding operation.

[0004]

Means for Solving the Problems] characterizing feature of the present invention, two
String supply position where the string holding part at the tip of the needle reaches the knot mechanism side
And the string holding unit is in a standby posture separated from the knot mechanism.
A needle driven and oscillated in a range extending to the standby position,
For bundling supplied from the winding storage section by this needle
The knotting mechanism of the knotter building type that knots the elastic cord
Provided, and the string holding portion at the tip of the needle is
Needle string swinging movement of the needle approaching the string holder
At the time of movement, the resistance is given to the extension of the elastic cord,
Before the needle string holding part is separated from the string holder
When the needle retracts to the standby position,
String resistance means for reducing the unwinding resistance of the string.
The point is that it is provided between the turn accommodating portion and the needle .

[0005]

According to the above arrangement, the following operation can be achieved.
Wear. [At the time of needle cord supply swing operation] The needle swings, and the string holding part at the tip is the string of the knot mechanism.
Approach the holder. At this time, resistance is given to the extension of the rubber string by the string resistance means, so that the rubber string is hardly extended due to the frictional resistance, and the rubber string portion used for the knot operation is initially set. Thus, the objects to be bound can be bound with an appropriate tension. Bind these objects together
The elastic cord part is cut after knotting,
Both are consumed. [When the needle retreats and swings] And the end of the remaining rubber string is clamped by the string holder
The needle is held in this state,
Move away from At this time, the string holder is a string holder.
The tension of the elastic band between them increases as the
The rubber strap part following this rubber strap part
It is pulled to the ruder side. In such an operation, the string resistance
By means of this, the drag resistance of the elastic cord is reduced.
Then, the rubber cord is paid out from the winding storage section.

[0006]

As described above, it is possible to provide a device capable of mechanically and quickly binding soft objects to be bound, such as soft long vegetables and cut flowers, by using a rubber string, and to always provide a bundle of appropriate tension. Thus, the object to be tied can be tied, and a material that can be easily expanded and contracted and can maintain a good tying operation even with a rubber material having a large friction coefficient can be obtained.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
FIG. 4 to FIG. 4 show a general-purpose binding machine that binds to-be-tied objects a such as soft and long vegetables such as cut flowers, leeks, and asparagus using rubber strings. The binding machine includes an electric motor 2 as a driving source and a knot mechanism 3 inside the box 1, and a cord storage unit 5 in which a rubber cord 4 for binding is wound and stored above the outside of the box 1. ,
A needle 6 for supplying the rubber string 4 from the winding string storage section 5 toward the knot mechanism 3, and the object to be bound a is artificially placed along the upper work table 7 of the box 1. It is configured to supply and tie up.

As shown in FIG. 4, a pulley 9 provided on an output shaft 8 of the electric motor 2 and a pulley 13 provided on a relay shaft 12 supported by a bearing member 10 erected from the bottom of the box 1. A transmission belt 14 is stretched over the gear, and a gear 15 provided on the relay shaft 12 is engaged with a large-diameter gear 17 which is fitted around the driven shaft 16 so as to freely rotate. And a one-turn clutch mechanism 18 is interposed therebetween. A driving crank mechanism 19 for driving the needle 6 is provided at one end of the driven shaft 16, and is linked to a driving shaft 21 of the knot mechanism 3 via a bevel gear mechanism 20 provided at the other end to branch off. It has been transmitted.
As shown in FIG. 5, the one-rotation clutch mechanism 18
A pawl clutch 22 is provided between the boss portion of the large-diameter gear 17 and the driven shaft 16, and between the driven-side meshing portion 22 a and the driving-side meshing portion 22 b of the claw clutch 22 from above in the axial direction. The locking plate 23 is inserted in a state of being pressed and pressed inward to set the clutch to a disengaged state, and the locking plate 23 is driven by an electromagnetic solenoid 25 via an operation plate 24 to thereby engage the pawl clutch 22. It is configured so that it can be set to a clutch engaged state by swinging in a direction away from the clutch. Immediately after the clutch is engaged, the electromagnetic solenoid 25 is turned off and the driven shaft 16 makes one rotation.
The inclined cam surface 2 formed on the outer peripheral surface of the driven side engagement portion 22a
6, the engagement plate 22 is engaged, and the driven side engagement portion 22a is gradually slid to the clutch disengagement side.
It is configured to rotate only rotation. As shown in FIG. 22, the electromagnetic solenoid 25 is configured to be turned on only for a short time by the operation of a foot switch SW1 or a hand switch SW2 disposed at the foot of an operator. And foot switch SW1
And a switch SW3 that can be switched between a state using the hand switch SW2 and a state using the hand switch SW2. The hand switch SW2 causes the operating piece 27 to protrude upward from the workbench 7 at a position on the upper side of the knot mechanism 3 at the passing position at the time of placing and supplying the material to be bound a.
It is configured to automatically enter and operate upon contact with the device.

The needle 6 is provided so as to be exposed upward from the worktable 7, and is pivotally supported by a needle support case 28 projecting upward from the worktable 7 so as to be swingable about the horizontal axis X1. . That is, as shown in FIG. 1, the boss 30 is externally fitted to the rotating shaft 29 rotatably supported by the needle support case 28 so as to be integrally rotatable, and the boss 30 is bent in a U-shape. The support arm 31 is extended, and the needle 6 is connected to the tip of the support arm 31. As shown in FIG. 6, a drive arm 32 attached to the rotation shaft 29 and the crank mechanism 19 are interlocked and connected via a push-pull rod 33 inside the needle support case 28, and a crank mechanism is provided. The drive arm 32, that is, the needle 6 is swingably driven over a predetermined range by 19 to supply the rubber cord 4 to the knot mechanism 3. That is,
In the needle 6, the string holding portion 6A at the tip reaches the knot mechanism 3 side.
And the string holding portion 6A is separated from the knot mechanism 3.
It is configured to swing freely within the range from the standby position.
I have. The needle 6 is urged to return to the upper standby position by a spring 34 disposed in the needle support case 28. When the one-rotation clutch mechanism 18 is in the disengaged state, the elastic force of the rubber cord 4 that extends extends. It is configured not to stop at an unstable position displaced downward from a predetermined standby position. As shown in FIGS. 1 to 3 and 9, the cord storage section 5 is provided with the needle support case 28.
The cord storage roll 36 is rotatably supported by a support member 35 extending from the needle support case, and a slack removing rod 37 acting on the payout string is provided. String guide roller 3
9, 40 are attached. The feeding cord is wound once around a guide roller 40 located on the lower side of the cord supply, and then supplied to the needle 6. The guide roller 40 is pushed by a spring 41 whose urging force can be adjusted so as to be fed. The condition can be adjusted. The amount of winding of the rubber cord 4 with respect to the guide roller 40 increases as the needle 6 swings toward the knot mechanism 3, and the amount of winding decreases with the retreat operation to the standby position .
Turned.

[0010] As shown in FIG.
On the surface of the band-shaped rubber plate main body 4a, streak-like irregularities 4b extending in the longitudinal direction of the string are formed to improve the sliding in the longitudinal direction, and an appropriate tension can be obtained in a state where the objects to be bound a are bundled. It is configured as follows.

The knot mechanism 3 is provided in the form of a knotter building, holds and holds one end of a rubber string 4 and overlaps a new string supplied by the needle 6 with a held string. A string holder 42 to be set,
A knot building 43 for winding and knotting the two overlapping string portions as described above is provided, and the string holder 42 and the knot building 43 are arranged such that their respective rotational drive axes are parallel to each other. A pair of timing gears 45 and 46 for driving these are mounted on the node drive shaft 21. And knot building 43
When the knot building 43 is being wound around, the rubber string portion 4 held and held by the string holder
c and a rubber guide portion 47 for winding the rubber string portion 4d after winding the material to be tied to form a knot, and a string guide member 47 for locking and holding each of the string portions 4c and 4d at a predetermined affected position. And a moving means A for moving the string guide member 47 in a direction substantially perpendicular to the string supply direction by the needle 6 after the string winding operation by the knot building 43 is completed. More specifically, as shown in FIGS. 2, 7 and 10, the string guide member 47 is provided in a plate shape that covers the upper part of the knot building 43, and the two string portions are arranged along the moving direction of the object to be bound a. Are formed and engaged with the support bracket 44 by a swing support arm 49 so as to be swingable about an axis along the axis of the knot driving shaft 21. The swing support arm 49 is urged by a spring 50 to swing toward the above-mentioned working posture, and a cam follower 52 is brought into contact with and engaged with a cam 51 provided on the knot driving shaft 21, so that the above-mentioned working posture and the knot building The moving means A is configured so as to swing and move from the position of retreating from the upper position.
In this way, when the string guide member 47 is switched to the retracted posture while being wound by the knot building 43, the string comes off from the knot building 43, and the knot operation ends. Note that the rotating shaft 29 of the needle 6 is
And the rubber shaft 4 is supplied to the knot building 43 and the string holder 42 at a substantially uniform level. In addition, the needle support case 28 is provided in an inclined posture so that a knot space can be increased.

In the vicinity of the string guide member 47, there is provided a string pulling member 53 which can be switched between a retaining position for closing the entrance portion of the locking concave portion 48 and a position for opening the entrance portion. At the time of the cord winding operation, a posture switching means B for switching the string pulling member 53 to the retaining posture is provided. That is, as shown in FIGS.
The string pulling member 53 has an axis X orthogonal to the axis of the nodal drive shaft 21.
2, pivotally supported by the support bracket 44 so as to swing freely, and are urged to swing toward the open position by a spring 54, and a cam follower 55 provided continuously contacts a cam 56 provided on the node drive shaft 21. It is configured to perform a switching swing operation.

As shown in FIGS. 19 and 20, between the knot building 43 and the string holder 42, a rubber string 4 having one end held by the string holder 42 when the needle 6 is withdrawn is fixed. A string guide plate 57 for regulating the standby position is provided, and the string guide plate 57 approaches the outer end rotation locus of the string cutting cutter 58 provided on the string holder 42 with a small interval smaller than the thickness of the rubber string. It is arranged in the state.

Next, the binding operation procedure will be described. From the standby state in which the end of the rubber string 4 is sandwiched and held by the string holder 42 and the needle 6 is in the upper standby position, the tied object a is placed on the worktable 7 and supplied along the lower side of the string. When the object to be bound a approaches the place where the binding is performed, the object to be bound a comes into contact with the operating piece 27 of the hand switch SW2, the one-rotation clutch mechanism 18 is operated, and the driven shaft 16 is driven one rotation. . Then, as shown in FIG. 12, the needle 6 operates to supply the rubber string 4 to the knot mechanism 3. By the way, before
A structure in which the rubber cord 4 is wound around the guide roller 40 as described above
The string resistance means is composed of
The string holding portion 6A at the tip of the dollar 6 is the string holder of the knot mechanism 3.
42 when the needle 6 is approaching
To provide resistance to the feeding of the rubber cord 4
The string holding portion 6A is separated from the string holder 42.
When the retractor 6 moves to the standby position, the rubber
The extension resistance of the string 4 is reduced. In other words, the string guide row
The rubber string 4 wound around the needle 40 is oscillated by the needle 6
It winds in the direction in which it is further wound with the movement,
Resistance was given to the extension of the elastic cord 4 by the
And the feeding of the rubber string 4 is almost stopped (the rubber
The point of reducing the extension resistance of the string 4 will be described later.
). And before the needle 6 reaches the maximum rush position,
First, the string pulling member 53 is switched from the open position to the retaining position. Shortly thereafter, the knot building 43 is driven to rotate,
The string part 4c held by the string holder 42 and the string part 4d supplied by the needle 6 are wound together to start the knotting operation (FIG. 13). At this time, the string guide member 4
7 is set to the operation position.

Thereafter, when the needle 6 reaches the maximum intruding position, the string holder 42 is rotated from that point to align the two string portions 4c and 4d so as to be wound by the knot building 43 (FIG. 14). , FIG. 15). When the winding operation of the knot building 43 is completed, the string pulling member 53 switches to the open position, and the cutting cutter 58 provided on the string holder 42 approaches the string guide plate 57 to cut the string portion, After that, the string guide member 47 swings laterally from the action posture, pulls out the string wound around the knot building 43, and the knot operation ends (FIGS. 16 to 18). At this time, near the end of the winding operation of the knot building 43, the string holder 42 releases the holding of the held string portion 4c, and the needle 6 newly holds and holds the supply string portion 4d. Then, the supply cord portion 4d is cut by the cutting cutter 58. As described above, since the rubber cord 4 is hardly extended from the needle 6 side, the rubber cord 4 during the knot operation is in an extended state, and is held and held by the string holder 42 first when the string is cut. Belts portion 4c, since become extreme extended state along with its winding action, the clamping state is canceled, out exit from the loop portion formed by nodules building 43, the knot binding string , A so-called single-knot state (see FIG. 21). As a result, when the rubber string 4 is removed from the tied object a, when the above-mentioned single string portion is pulled, the number of passing strings in the loop of the knot is one, and the stretching action of the rubber string and the rubber string It can be easily pulled out from the slipping action by the formed unevenness 4b, and after falling out of the loop, the remaining loop acts so as to spread, so that the binding state can be easily released. In addition, since the knot building 43 and the string holder 42 are provided so that their respective drive shafts are parallel to each other, when the winding operation by the string holder 42 is performed, the two string portions positioned between the knot building 43 and the knot building 43 are arranged. The posture and the rotation direction of the string holder 42 are substantially parallel, and the knot operation is not hindered by being wound around the arrangement portion of the holding spring 42a (FIG. 19). Moreover, the rubber cord 4
By forming streak-like irregularities 4b on the surface of the cord, due to the pinching action by the string holder 42, it slides appropriately in the longitudinal direction,
In addition, an appropriate holding force can be maintained, and the holding action can be performed smoothly. Then, when the needle is retracted to the standby position, the winding of the string is loosened from the guide roller 40, and the rubber string 4 is drawn out of the storage section 5 with the retraction operation. That is, the newly supplied rubber cord
Is held by the string holder 42
6 is released from the string holder 42,
As the string holding section 6A moves away from the string holder 42,
The tension of the string part between them increases, and this rubber string part
Is pulled toward the string holder 42 side
In such an operation, the rubber string is provided by the string resistance means.
4 is reduced (ie, need
As the string holding portion 6A of the cord 6 separates from the string holder 42,
Therefore, the winding amount of the rubber cord 4 around the guide roller 40 is small.
As a result, the friction of the guide roller 40 against the rubber string 4 is reduced.
(The frictional resistance is reduced)
Will be issued.

[Another Embodiment] The string resistance means is replaced with a means for winding the rubber string 4 around the guide roller 40.
It may be configured such that the cord is prevented from being pulled out by the pinching action and the pinching action is stopped to allow the cord to be fed out during the retreat operation.

In the claims, the reference numerals are used to facilitate comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a general-purpose binding machine.

FIG. 2 is a longitudinal side view of a general-purpose binding machine.

FIG. 3 is a longitudinal sectional side view of a general-purpose binding machine.

FIG. 4 is a cross-sectional plan view of a general-purpose binding machine.

FIG. 5 is a side view of a part where a one-turn clutch mechanism is provided.

FIG. 6 is a side view of the needle drive system.

FIG. 7 is a side view of a driving cam mechanism of the string pulling member.

FIG. 8 is a diagram for explaining the operation of the string pulling member.

FIG. 9 is a side view of the string feeding section.

FIG. 10 is a perspective view of a string guide member.

FIG. 11 is a cross-sectional view of an elastic cord.

FIG. 12 is an explanatory view of a binding operation.

FIG. 13 is an explanatory view of a binding operation.

FIG. 14 is an explanatory diagram of a binding operation.

FIG. 15 is an explanatory diagram of a binding operation.

FIG. 16 is an explanatory diagram of a binding operation.

FIG. 17 is an explanatory view of a binding operation.

FIG. 18 is an explanatory view of a binding operation.

FIG. 19 is a side view of the string knot mechanism.

FIG. 20 is a diagram illustrating the operation of the string guide plate.

FIG. 21 is a perspective view of an object to be bound after the binding.

FIG. 22 is an electric circuit diagram

[Explanation of symbols]

3 Knotting mechanism 4 Rubber cord for binding 5 Winding storage part 6 Needle 6A String holding part 42 String holder

Claims (1)

(57) [Claims] 1. A string holding portion (6A) at the tip of a needle (6).
Supply position reaching the knot mechanism (3) and the string holding position
The part (6A) is in a standby posture separated from the knot mechanism (3).
Needle driven and oscillated in the range from the standby position
(6) and a winding storage part by this needle (6)
Operate the knotting strap (4) supplied from (5)
A knotting mechanism (3) in the form of a knotter building,
The string holding portion (6A) at the tip of the needle (6) is connected to the knot mechanism.
The need approaching the string holder (42) of (3).
Of the rubber cord (4) during the swing movement of the cord (6)
Adds resistance to the feeding and holds the string of the needle (6)
Before the part (6A) separates from the string holder (42)
When the needle (6) retreats to the standby position and moves
To reduce the extension resistance of the rubber cord (4)
A step is formed by connecting the wound storage section (5) and the needle (6).
A general-purpose binding machine installed between them .