JPH06127525A - General-purpose binding machine - Google Patents

Abstract

PURPOSE:To provide a general-purpose binding machine which can perform the positive binding operation having a less looseness by effectively making use of the structure of a passing detecting switch of an article to be bound. CONSTITUTION:In a general-purpose binding machine provided with a binding mechanism 3 for binding an article to be bound to be placed on a workbench 7 and transferred along it, wherein a passing detecting switch SW2 is provided in a part when the article to be bound is passed on the workbench 7, for making the binding-operation by operating a single clutch mechanism interposed between a drive motor and the binding mechanism 3 according to the detected operation of this passing detecting switch SW2, the passing detecting switch SW2 is placed above a bound article passing region, and a detecting operating touching flap 27 is downwardly extended toward the workbench 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general-purpose binding machine for binding cut flowers, soft vegetables, boxes, and the like, and more specifically, binding objects to be bound and placed along a workbench. And a passage detection switch at a portion of the workbench where the object to be bound passes, and a one-rotation clutch interposed between the drive source and the binding mechanism according to the detection operation of the passage detection switch. The present invention relates to a general-purpose binding machine configured to operate a mechanism to perform binding operation.

[0002]

2. Description of the Related Art Recently, an exhaust straw binding device used for a combine, a binder, etc., which is a conventionally well-known mechanism, has been rationally improved, and an electrically controlled one-rotation clutch mechanism is used to perform switch operation. A general-purpose binding machine that performs a binding operation and can bind a cut flower or soft vegetables with a rubber string without damaging them has been put into practical use.However, in the conventional general-purpose binding machine, an object to be bound is placed and transferred. However, a switch for starting the binding operation is arranged on the lower side of the workbench that performs the binding operation, and the contact piece for detecting the detection is arranged so as to project upward from the workbench (for example, the feature of the applicant). See Japanese Patent Application No. 3-120733].

[0003]

In the above-mentioned conventional structure, while the object to be bound is manually placed on the workbench and transferred, the object to be bound itself abuts and swings the contact piece to activate the switch. The binding operation is performed to improve workability. However, since the contact piece of the starting switch is generally configured to elastically return to the original posture, the bundled object itself receives a lifting force from the contact piece upward during the contact action, There is a possibility that the object to be bound may float upward from the work table, and the string binding may be loosened when the binding operation is performed, so that a firm string binding cannot be performed, and there is room for improvement in this respect. The present invention aims to eliminate the above-mentioned problems.

[0004]

According to a characteristic configuration of the present invention, in the general-purpose binding machine described at the beginning, the passage detection switch is arranged above the binding object passage area, and the contact piece for detecting operation is provided. The point is that it extends downward toward the workbench.

[0005]

[Operation] When the object to be bound is placed and transferred along the workbench,
With the transfer of the object to be bound, the contact piece comes into contact with the contact piece and oscillates toward the lower side in the transfer direction to activate the detection switch.At this time, the contact piece is in an oblique posture, The reaction force due to the elastic restoring force toward the standby position serves as a force for pressing the bundled object from the upper side to the lower side, and acts to prevent the bundled object from rising from the workbench.

[0006]

Therefore, by reasonably improving the structure, the structure of the switch for detecting the passage of the object to be bound is effectively used to prevent the object to be bound from being lifted up from the workbench, and the object to be bound is wound by the binding string. The operation was carried out in a state where there were few gaps, and it became possible to perform a tight binding operation with little loosening.

[0007]

Embodiments will be described below with reference to the drawings. Figure 1
~ Fig. 4 shows a general-purpose binding machine for binding a bundled object "a" such as cut flowers, leeks, and soft and long vegetables such as asparagus 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. ,
It comprises a needle 6 for feeding out the rubber cord 4 from the winding cord storage portion 5 at a high speed and supplying the rubber cord 4 toward the knotting mechanism 3, and the bundled object a is artificially moved along the upper working table 7 of the box body 1. It is constructed so that it can be placed and supplied and then bound.
Pulley 9 and box 1 provided on the output shaft 8 of the electric motor 2
A transmission belt 14 is stretched over a pulley 13 provided on a relay shaft 12 supported by a bearing member 10 which is erected from the bottom of the relay shaft 12, and is freely rotatably attached to a gear 15 and a driven shaft 16 provided on the relay shaft 12. The large-diameter gear 17 that is fitted is engaged with the large-diameter gear 17, and a one-rotation clutch mechanism 18 is interposed between the large-diameter gear 17 and the driven shaft 16. 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.

The needle 6 is provided so as to be exposed upward from the workbench 7, and is pivotally supported by a needle support case 28 projecting upward from the workbench 7 so as to be swingable around a horizontal axis X1. . That is, the support boss portion 30 is cantilevered from the needle support case 28, and the support boss portion 30 is
A rotary shaft 29 is provided inside, and the needle 6 is connected to the shaft end. The 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 drives the drive arm 32, that is, The needle 6 is oscillated over a predetermined range to supply the rubber cord 4 to the knot mechanism 3. Also, the needle 6
Is urged to return to the upper standby position by a spring 34 disposed 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 that is extended causes the predetermined standby position. It is configured so that it does not stop at an unstable position displaced downward from.

As shown in FIGS. 1 to 3 and 9, the winding cord accommodating portion 5 rotatably supports a winding cord 36 by a supporting member 35 extending from the supporting boss portion 30, and also supports the winding cord 36. A slack eliminating rod 37 and a pair of string guide rollers 39, 40 are attached to the needle side of the boss portion 30. The pay-out string is wound around the guide roller 40 located on the lower side of the string supply once and then supplied to the needle 6. In addition, a friction brake member 60 that slidably acts on the winding outer peripheral surface of the winding string 36 by its own weight is swingably supported and provided. As shown in FIG. 11, the bundling rubber cord 4 has a band plate-shaped rubber plate body 4a.
The surface of the cord is formed with streaky concavities and convexities 4b continuous in the longitudinal direction to improve the sliding in the longitudinal direction and to obtain an appropriate tension force in the state where the objects to be bound a are bundled.

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. The string holding portion of the knot building 43 is formed with a locking groove 43a for preventing the string from slipping. Then, at a position near the upper side of the nodule building 43,
At the time of the cord winding operation of the knotting building 43, that is, when the knot is formed by winding the rubber cord part sandwiched and held by the cord holder 42 and the rubber cord part after winding the object to be bound, A string guide member 47 for locking and holding the string portion at a predetermined actuated position is provided, and after the string winding operation by the knot building 43 is completed, the string guide member 47 is provided in a direction substantially orthogonal to the string supply direction by the needle 6. Means A for moving
Is provided. More specifically, as shown in FIG. 10, the string guide member 47 is provided in a plate shape that covers the upper side of the knotted building 43, and engages with both the string parts along the movement direction of the object to be bound a. The rocking support arm 4 is formed by forming the recess 48.
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. At the lower end of the string guide member 47 in the moving direction,
As shown in FIG. 10, a cutout recess 47a having a shape substantially following the outer shape of the knot building 43 is formed. According to this structure, even when a thick rubber cord having a large tension is used, the rubber cord 4 is pulled out while directly handling the cord portion wound around the knot building 43, so that a sufficient knot is formed. There is an advantage that nodule operation can be performed. The rotation shaft 29 of the needle 6 is connected to the rotation shaft core of the knot building 43 and the cord holder 4
It is arranged so as to be positioned above the middle of the rotation axis of the second rotation shaft 2 and the rubber cord 4 is supplied to the knot building 43 and the cord holder 42 at a substantially uniform level.
The needle support case 28 is provided in an inclined posture so that a large knot space can be secured. The string guide member 47
A string pulling member 53 that can be switched between a retaining position for closing the entrance portion of the locking recess 48 and a posture for opening the entrance portion is provided in the vicinity of the position, and at the time of the string winding operation by the knot building 43, A posture switching means B for switching the member 53 to the retaining posture is provided. That is, FIG.
As shown in FIG. 6, the string-placing member 53 is swingable around the axis X2 that is orthogonal to the axis of the knot drive shaft 21.
And is urged to swing toward the open position by a spring 54, and the connected cam followers 55 are connected to the knot drive shaft 2.
The cam 56 is provided so as to abut on the cam 56 to perform a switching swing operation. Further, between the knot building 43 and the string holder 42, the string holder 42 is used when the needle 6 is retracted.
A string guide plate 57 for restricting the rubber string 4 whose one end is held by a predetermined standby position is provided, and the string guide plate 57 is also provided.
Are arranged so as to approach the outer end rotation locus of the string cutting cutter 58 provided in the string holder 42 with a minute interval smaller than the thickness of the rubber string.

As shown in FIGS. 4 and 5, the one-rotation clutch mechanism 18 includes the boss portion of the large-diameter gear 17 and the driven shaft 1.
6 and a driven side meshing portion 22a and a driving side meshing portion 2 of the claw clutch 22 are provided.
2b, the locking plate 23 is inserted from the upper side toward the inner side in the axial radial direction with a pressing force to set the clutch to the 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. Then, immediately after the clutch is engaged, the electromagnetic solenoid 25 is turned off and actuated to drive the driven shaft 16
Is rotated once, 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 is gradually slid toward the clutch disengagement side. Then, it is configured to be driven to rotate only once. The electromagnetic solenoid 25 is a foot switch SW1 or a hand switch SW arranged at the feet of an operator.
It is configured so that it is turned on for only a short time by the operation of any one of 2 [an example of the passage detection switch]. A changeover switch SW3 is provided which can be switched between a state in which the foot switch SW1 is used and a state in which the hand switch SW2 is used. The hand switch SW2 is configured so as to automatically enter and operate when it comes into contact with the object to be bound a to be supplied at the passing position when the object to be bound a is placed and supplied. The hand switch SW2 is arranged above the binding object passing region, and the detection operation contact piece 27 is provided.
Is extended downward toward the workbench. That is, the hand switch SW2 is attached to the end portion of the support boss portion 30 through the bracket 59 that bypasses the string so that the vertical position can be adjusted, and the detection operation contact piece 27 is passed through the insertion hole formed in the workbench. It is extended downwards so that it can enter to one side. Further, the contact piece 27 is provided so that its position can be adjusted up and down with respect to the switch body so that the operating length can be changed.

Next, the binding operation procedure will be described. Figure 1
2 to 18 show the operation procedure. 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 binding object a reaches the binding action point, the binding object a moves to the hand switch SW2.
The contact is brought into contact with the operating contact piece 27, the switch is operated, the one-rotation clutch mechanism 18 is activated, and the driven shaft 16 is driven one rotation. Then, as shown in FIG. 12, 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 5
3 switches from the open position to the retaining position. Immediately after that, the knot building 43 is rotationally driven, and the string portion 4c held by the string holder 42 and the string portion 4d supplied by the needle 6 are wound together to start the knot operation. still,
At this time, the string guide member 47 is set to the operating position. After that, when the needle 6 reaches the maximum plunging position, the string holder 42 rotates from that point, and both the string portions 4c,
4d is aligned and acts to be wound up by the knot building 43. Then, when the winding operation of the knot building 43 is completed, the string pulling 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 both string parts, and then the string guide member 47 swings laterally from the working posture and winds around the knot building 43. The string is pulled out, and the knot operation is completed. At this time, 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 clamped by the cord holder 42. Since the held string portion 4c is in an extremely extended state due to the winding action, when it is cut, it is disengaged from the knot portion of the knot building 43, and the knot of the bound object is The so-called single knot state (Fig. 2
1). As a result, when the rubber cord 4 is removed from the bound object a, if the above-mentioned one-cord portion is pulled, it can be easily pulled out due to the stretching action of the rubber cord and the sliding action due to the unevenness 4b formed on the rubber cord. You can 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 being wound around the arrangement portion of the holding spring 42a. Moreover, the surface of the rubber cord 4 has streaky irregularities 4
By forming b, it becomes possible to appropriately slide in the longitudinal direction and to hold an appropriate holding force in the holding operation by the string holder 42, so that the holding operation can be performed smoothly. Then, when the needle retracts to the standby position, it acts from the guide roller 40 in the direction in which the winding of the string loosens,
The rubber cord 4 is unwound from the storage portion 5 with the retraction operation.

[Other Embodiments] FIG.
It may be configured as shown in FIG. That is, the rotation is provided with the positioning portion 61 that receives and supports the object to be bound a that is placed and transferred on the work table 7 at the binding position, and integrally forms the discharge arm 62 that discharges the object to be bound after the knot operation. A member 63 is rotatably provided around the horizontal axis X, and a positioning cam 61 attached to the timing gear 45 causes the positioning member 61 to project onto the work table 7 and a discharge arm 62 to move downward. Standing posture and positioning part 6
1 is retracted, and the discharging arm 62 is rotated upward to switch and rotate to a discharging posture in which the object a to be bound a is discharged. Then, instead of the string guide member 47 in the above-mentioned embodiment, the string is pulled out from the knot building 43 in accordance with the discharging operation by the discharging arm 62. The positioning portion 61 is arranged so that its front and rear position can be adjusted.

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 side 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 side view of the string feeding portion.

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

FIG. 11 is a sectional view of the rubber cord.

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 an explanatory view of bundling operation

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

FIG. 20 is an explanatory view of the operation of the string guide plate.

FIG. 21 is a perspective view of a bound object after binding.

FIG. 22 is an electric circuit diagram.

FIG. 23 is a side view of the binding action portion of another embodiment.

[Explanation of symbols]

 2 drive source 3 bundling mechanism 7 workbench 18 one-rotation clutch mechanism 27 contact piece SW2 passage detection switch

Claims (1)

[Claims] 1. A binding mechanism (3) for binding an object to be bound placed and transferred along a work table (7),
A passage detection switch (SW2) is provided at a portion of the workbench (7) where the object to be bound passes, and the drive source (2) and the binding mechanism (3) are accompanied by the detection operation of the passage detection switch (SW2).
A general-purpose binding machine configured to perform a binding operation by operating a one-rotation clutch mechanism (18) interposed between the passing detection switch (SW2) and a portion above the bound object passing region. The contact piece (2
A general-purpose binding machine in which 7) is extended downward toward the workbench (7).