JPH0787831A - Delivery scheme for binding string - Google Patents

Abstract

PURPOSE:To a scheme enabling smooth delivery of string stored in a wound form. CONSTITUTION:A string 4 is delivered in sequence from a wound string storage section 5 where the binding string 4 is spirally wound in a multilayer state on the outer peripheral surface of a cylinder 71 of a specified length and fed to a binding mechanism via a guide member 39 located at a specified distance apart from the storage section 5 and in the outer space of the radial direction of the cylinder 71. This delivery scheme for binding string with the above- mentioned mechanism is also equipped with a means C to impart the string 4 with vibration in between the storage section 5 and the guide member 39.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention sequentially unwinds a cord for tying it from a winding cord storage portion in which a cord for binding is spirally wound around the outer peripheral surface of a cylindrical body of a predetermined length and wound in multiple layers. The present invention relates to a bundling string feeding structure configured to supply the bundling mechanism to a bundling mechanism via a guide member that is located at a set distance from the winding string storage portion and is located radially outward of the cylindrical body.

[0002]

2. Description of the Related Art In the above-mentioned structure for feeding out a binding cord, conventionally, as shown in Japanese Patent Laid-Open No. 4-346716, the cord fed out from the winding cord storage portion is directly supplied to the binding mechanism through a guide member. The guide member is arranged in a state in which it is positioned substantially in the middle of the tubular body in the axial direction of the tubular body so that it can be guided smoothly at any position in the axial center of the tubular body. It was set up.

[0003]

According to the above-mentioned conventional structure, the cord is smoothly fed out radially outward from the winding cord wound in a cylindrical shape through the guide member. However, the following problems occurred. That is,
When the unwinding position of the string from the winding string is at the end of the tubular body in the axial direction, and when the unwinding position gradually approaches the center side, the unwound string is wound before being unwound. There is a possibility that the adjacent string may be caught and bite inwardly, and the string may not be smoothly fed out. Particularly, when a rubber cord is used as the binding cord, such an adverse effect is likely to occur. The present invention aims to eliminate the above-mentioned problems.

[0004]

According to a characteristic configuration of the present invention, in the unwinding structure of the binding cord described at the beginning, with respect to the cord to be unrolled and fed between the winding cord storage section and the guide member. The point is that a vibration applying means for applying vibration is provided.

[0005]

By vibrating the cord supplied from the winding cord storage portion, vibration is restricted at the guide portion by the guide member by the sliding contact guide. Therefore, at the cord feeding portion in the winding cord storage portion. As described above, the applied vibration is transmitted, and the catch between the unwound string and the adjacent string in the wound state before unwound is eliminated.

[0006]

As a result, it is possible to prevent the cords from biting into each other at the cord feeding position, and to prevent the cord feeding operation from being hindered due to the hooking of the cords, so that the cord can be fed smoothly. The supply was able to continue.

[0007]

Embodiments will be described below with reference to the drawings. Figure 1
~ Fig. 4 shows a general-purpose binding machine for binding the objects to be bound "a" such as leaf ginger, raccoon or other soft vegetables using a rubber cord. This binding machine is provided with an electric motor 2 as a drive source and a knotting mechanism 3 inside the box body 1, and a winding cord storage section 5 in which a binding rubber cord 4 is wound and stored above the outside of the box body 1. And a needle 6 for feeding the rubber cord 4 from the winding cord storage portion 5 toward the knot mechanism 3, and artificially mounts the bound object a along the upper working table 7 of the box body 1. It is configured so that it can be fed and operated in a bundle. As shown in FIG. 4, a relay shaft 12 supported by a pulley 9 provided on the output shaft 8 of the electric motor 2 and a bearing member 10 erected from the bottom of the box body 1.
The transmission belt 14 is stretched over the pulley 13 provided on the
A gear 15 provided on the relay shaft 12 and a large-diameter gear 17 which is fitted onto the driven shaft 16 so as to freely rotate are engaged with each other, and the one-rotation clutch mechanism 1 is provided between the large-diameter gear 17 and the driven shaft 16.
8 is interposed. A driven crank mechanism 19 for driving the needle 6 is provided at one end of the driven shaft 16 and interlockingly connected to a drive shaft 21 of the knot mechanism 3 via a bevel gear mechanism 20 provided at the other end of the driven shaft 16. I have been transmitted. As shown in FIG. 5, the one-rotation clutch mechanism 18 includes the boss portion of the large-diameter gear 17 and the driven shaft 16.
A claw clutch 22 is provided between the claw clutch 22 and the driven side meshing part 22a and the drive side meshing part 22 of the claw clutch 22.
The locking plate 23 is inserted in a state of being pressed and urged inward in the axial direction from the upper side between b and is set to the clutch disengaged state. The electromagnetic solenoid 25 is driven to swing in a direction away from the pawl clutch 22 so that the clutch engagement state can be set. And after engaging the clutch,
Immediately, the electromagnetic solenoid 25 is turned off and the driven shaft 16 moves to 1
When rotated, the locking plate 23 is engaged along the inclined cam surface 26 formed on the outer peripheral surface of the driven side meshing portion 22a, and the driven side meshing portion 22a gradually slides to the clutch disengagement side. It is configured to be driven to rotate only once.
In addition, as shown in FIG. 21, the electromagnetic solenoid 25 is
The operation is performed only for a short time by the operation of either the foot switch SW1 as a foot operation switch or the hand switch SW2 as a passage detection switch arranged at the foot of the operator. The changeover is performed by the changeover switch SW3. The hand switch SW2 causes the operating piece 27 to project upward from the work table 7 at the upper hand side position of the knot mechanism 3 at the passing position when the object to be bound a is placed and supplied, and is connected to the object to be bound a. It is configured to automatically enter and operate upon contact. The needle 6 is provided so as to be exposed upward from the workbench 7, and the needle support case 2 protruding upward from the workbench 7 is provided.
8 is pivotally supported around a horizontal axis X1. That is, as shown in FIG. 1, the needle 6 is connected to the shaft end of the rotating shaft 29 that is rotatably supported inside the boss portion 30 fixedly extended from the needle supporting case 28. And
As shown in FIG. 6, a drive arm 32 attached to the rotating shaft 29 and the crank mechanism 19 are interlockingly connected to each other inside the needle support case 28 via a push-pull rod 33, and the crank mechanism 19 is used. The drive arm 32, that is, the needle 6 is rockably driven over a predetermined range to supply the rubber cord 4 to the knot mechanism 3. Further, the needle 6 is urged to return to the upper standby position by a spring 34 arranged in the needle support case 28, and when the one-rotation clutch mechanism 18 is in the disengaged state, the elastic force of the rubber string 4 which extends is used. It is configured so as not to stop at an unstable position displaced downward from the predetermined standby position.

As shown in FIGS. 1 to 3 and 22, in the winding cord storage portion 5, a lateral support shaft 70 is cantilevered to a support member 35 extending from the needle support case 28. A tubular body 71 of a predetermined length is externally fitted onto the lateral support shaft 70 so as to be rotatable,
On the outer peripheral surface of the tubular body 71, a rubber cord 4 is rotatably supported on a cord storage roll 36 in which a rubber cord 4 is spirally wound and laminated in multiple layers, and a lateral long hole 37a which acts on the fed cord. There is provided a slack eliminating rod 37 having Then, it is arranged in a state where it is spaced apart from the winding cord storage portion 5 by a set distance and is positioned radially outward of the cylindrical body 71, and is rotatable about the longitudinal axis.
After the delivery string is wound and guided by the string guide roller 39 (an example of a guide member), it is wound around the second string guide roller 40 once and then supplied to the needle 6.
In addition, in order to prevent excessive string feeding out due to inertial rotation of the string associated with unwinding of the string, a string brake member 60 is provided which is in sliding contact with the outer peripheral surface of the string to provide resistance.

As shown in FIG. 10, the rubber band 4 for bundling is
On the surface of the rubber plate body 4a in the shape of a strip plate, the string-like concavities and convexities 4b that are continuous in the longitudinal direction of the cord are formed to improve the sliding in the longitudinal direction, and an appropriate tension can be obtained in the state where the objects to be bound a are bundled It is configured as follows.

The knotting mechanism 3 is provided in a knotter building type, holds and holds one end of the rubber cord 4, and puts a new cord portion supplied by the needle 6 and a cord portion on the held side in an overlapping state. A string holder 42 to set,
A knotting building 43 for knotting by winding both overlapping string portions as described above is provided, and the string holder 42 and the knotting building 43 are arranged so that their rotation drive axes are parallel to each other. A pair of timing gears 45 and 46, which are supported by 44 and drive them, are attached to the knot drive shaft 21. And nodule building 43
At a position near the upper side of the rubber string portion 4 when the knot building 43 is wound, that is, held by the string holder 42.
When the cord c and the rubber cord portion 4d after the object to be bound are wound to form a knot, the cord guide member 47 for locking and holding the cord portions 4c and 4d at a predetermined actuated position. And a moving means A for moving the string guide member 47 in a direction substantially orthogonal to the string supply direction by the needle 6 after the operation of winding the string by the knot building 43 is completed. More specifically, as shown in FIGS. 2, 7, and 9, the string guide member 47 is provided in the shape of a plate that covers the upper part of the knot building 43, and the above-mentioned string parts are provided along the moving direction of the object to be bound a. And a rocking support arm 4 is formed.
9 is pivotally supported by the support bracket 44 so as to be swingable around an axis along the axis of the knot drive shaft 21. The swing support arm 49 is urged by a spring 50 to swing toward the working posture, and a cam follower 52 is abuttingly engaged with a cam 51 provided on the knot drive shaft 21, so that the working posture and the knot building are moved. The moving means A is configured so as to swing and move in a posture of retracting from the upper position. In this way, with the knot building 43 wound around,
When the string guide member 47 is switched to the retracted posture, the string comes off from the knot building 43, and the knot operation ends. The rotary shaft 29 of the needle 6 is arranged so as to be located above the center of the rotation axis of the knot building 43 and the rotation axis of the string holder 42, and the rubber string 4 is arranged on the knot building 43.
The needle support case 28 is provided in an inclined posture so that a large knot space can be secured. The locking recess 48 is provided near the string guide member 47.
A string pulling member 53 is provided which can be switched between a retaining position for closing the entrance portion and a posture for opening the entrance portion, and at the time of the string winding operation by the knot building 43, the string pulling member 5
Attitude switching means B for switching the position 3 to the retaining position is provided. That is, as shown in FIG. 7 and FIG. 8, the string gathering member 53 is pivotally supported on the support bracket 44 so as to be swingable around an axis X2 orthogonal to the axis of the knot drive shaft 21, and is oriented toward the open position by the spring 54. The cam followers 55 connected to each other are brought into contact with a cam 56 provided on the knot drive shaft 21 to perform a switching swing operation. Further, as shown in FIG. 19, between the knot building 43 and the string holder 42, a string that restricts the rubber string 4 whose one end is held by the string holder 42 to a predetermined standby position when the needle 6 is retracted. A guide plate 57 is provided, and the string guide plate 57 is arranged so as to approach the outer end rotation locus of the string cutting cutter 58 provided in the string holder 42 at a minute interval smaller than the thickness of the rubber string. .

Next, the binding operation procedure will be described. From the standby state where the end of the rubber cord 4 is sandwiched and held by the cord holder 42 and the needle 6 is in the upper standby position, the object to be bound a is placed on the work table 7 and fed along the lower side of the cord. When the bound object a approaches the binding action point, the bound object a comes into contact with the operating piece 27 of the hand switch SW2, the one-rotation clutch mechanism 18 operates, and the driven shaft 16 is driven to rotate one rotation. . Then, as shown in FIG. 11, the needle 6 operates to supply the rubber cord 4 toward the knot mechanism 3. At this time, the string wound around the string guide roller 40 is wound in the direction in which it is further wound with the operation of the needle 6, and the unwinding of the string is almost stopped. Then, before the needle 6 reaches the maximum plunging position, first, the string pulling member 53 is switched from the open position to the retaining position. Immediately after that, the knot building 43 is rotationally driven to wind the string portion 4c held by the string holder 42 and the string portion 4d supplied by the needle 6 together to start the knot operation (FIG. 12). At this time, the string guide member 47 is set to the working position.
After that, when the needle 6 reaches the maximum plunging position, the cord holder 42 rotates from that point and both the cord portions 4c, 4d are rotated.
And act to be wound up by the nodule building 43 (FIGS. 13 and 14). Then, when the winding operation of the knot building 43 is completed, the string gathering member 53 is switched to the open posture, and the cutting cutter 58 provided in the string holder 42 approaches the string guide plate 57 to cut the string portion, Then, the string guide member 47 swings laterally from the working posture to pull out the string wound around the knot building 43, and the knot operation is completed (FIGS. 15 to 17). At this time, in the vicinity of the end of the winding operation of the knot building 43, the string holder 42 releases the clamped portion of the retained cord portion 4c, and the needle 6 newly clamps and retains the supply cord portion 4d. The cutting cord 58 cuts the supply cord portion 4d. As described above, since the rubber cord 4 is hardly paid out from the needle 6 side, the rubber cord 4 is in the extended state during the knotting operation, and when the cord is cut, the rubber cord 4 is first held and held by the cord holder 42. Since the cord portion 4c is in an extremely extended state due to the winding action, when the pinched state is released, the cord portion 4c comes off from the loop portion formed by the knot building 43, and the knot of the binding cord is released. Is in a so-called single knot state (see FIG. 20). As a result, when the rubber cord 4 is removed from the bound object a, if the above-mentioned one cord portion is pulled, there is one passing cord in the loop of the knot, and the stretching action of the rubber cord and the rubber cord From the sliding action due to the formed unevenness 4b,
It can be easily pulled out, and after coming out of the loop, the remaining loop acts so as to spread, and the bound state can be easily released. Moreover, since the knot building 43 and the string holder 42 are provided such that the drive shaft cores of the knot building 43 are parallel to each other, when the winding operation is performed by the string holder 42, the two knot portions of the two strings positioned with the knot building 43 are positioned. The posture and the rotation direction of the string holder 42 are substantially parallel to each other, and the knotting operation is not hindered by the winding of the holding spring 42a (FIG. 18). Moreover, by forming the stripe-shaped irregularities 4b on the surface of the rubber cord 4, it becomes possible to moderately slide in the longitudinal direction and maintain an appropriate clamping force in the clamping action by the cord holder 42, and the retaining action is smooth. You can do it. When the needle 6 is retracted to the standby position, the guide roller 40 acts in a direction in which the winding of the cord is loosened, and the rubber cord 4 is fed out from the storage portion 5 in accordance with the retracting operation.

The winding string storage section 5 and the first string guiding roller 39.
And a vibration applying means C for applying a vibration to the string fed and supplied. That is, in FIG.
As shown in FIG. 23, a rod body 61 as a vibration imparting means is fixedly extended from the needle 6 toward the passage position of the string so as to be integrally rotatable, and the rod body 61 is retracted when the needle 6 is retracted to the standby position. Is configured to push down the string to vibrate and vibrate, and to prevent the rubber string 4 from accumulating due to catching between the strings at the feeding position of the rubber string 4 in the string storage roll 36.

[Other Embodiments] As the binding cord, instead of the rubber cord 4 as described above, a cord made of hemp cord, jute or the like may be used. Further, as the vibration applying means C,
The following various configurations may be used. (1) As shown in FIG. 24, an elastic body 64 made of a rubber material or the like slidably contacting the rubber cord 4 is attached to the tip of the support arm 63 integrally attached to the cord brake member 60, and the cord storage roll 3
The vibration of the cord brake member 60 accompanying the rotation of 6 may be used. (2) As shown in FIG. 25, the boss portion 3 is provided with a sliding contact member 65 having a large sliding contact resistance that resonates by sliding contact with the rubber cord 4.
It may be configured to be fixedly attached to 0. (3) As shown in FIG. 26, the tubular member 66 fitted on the middle portion of the unwound rubber cord 4 is supported by the fixed portion via the pair of springs 67, and is vibrated by resonance as the unwound rubber string 4 is unwound. May be provided. (4) A structure may be used in which the string is blown with air to vibrate.

It should be noted that reference numerals are added to the claims for facilitating the 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 an overall perspective view of a general-purpose binding machine

[Fig. 2] Vertical side view of a general-purpose binding machine

FIG. 3 is a vertical sectional side view of the 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 the one-rotation clutch mechanism arrangement portion.

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

FIG. 7 is a side view of the drive cam mechanism of the string bringing member.

FIG. 8 is an explanatory view of the action of the string bringing member.

FIG. 9 is a perspective view of a string guide member.

FIG. 10 is a sectional view of the rubber cord.

FIG. 11 is an explanatory view of bundling operation.

FIG. 12 is an explanatory view of bundling operation.

FIG. 13 is an explanatory view of bundling operation

FIG. 14 is an explanatory view of bundling operation

FIG. 15 is an explanatory view of bundling operation

FIG. 16 is an explanatory view of bundling operation.

FIG. 17 is an explanatory view of bundling operation

FIG. 18 is a side view of the string knot mechanism.

FIG. 19 is an explanatory view of the operation of the string guide plate.

FIG. 20 is a perspective view of a bound object after binding.

FIG. 21 is an electric circuit diagram.

FIG. 22 is a plan view of the string storage section.

FIG. 23 is a side view of the string storage section.

FIG. 24 is a side view of a string storage portion according to another embodiment.

FIG. 25 is a plan view of a string storage portion according to another embodiment.

FIG. 26 is a plan view of a vibration applying means of another embodiment.

[Explanation of symbols]

 3 Bundling mechanism 4 String 5 Winding string storage 39 Guide member 71 Cylindrical body C Vibration imparting means

Claims (1)

[Claims] 1. A cord (4) for bundling a tubular body (7) having a predetermined length.
1) The string (4) is sequentially fed out from a winding cord storage portion (5) which is spirally wound and laminated in multiple layers on the outer peripheral surface, and is separated from the winding cord storage portion (5) by a set distance. Cylindrical body (71)
Via a guide member (39) located radially outward of
A structure for feeding out a binding cord configured to be supplied to a binding mechanism (3), wherein the cord (4) fed out between the winding cord storage section (5) and the guide member (39) is fed. ) Is provided with a vibration applying means (C) for applying a vibration to (1).