JP3610346B2 - Automatic stopping device for lapping machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wrapping machine for wrapping a grass bale formed of a roll baler with a film.
[0002]
[Prior art]
As an automatic stopping device for a wrapping machine, a device described in Japanese Utility Model Registration No. 2549297 is known.
[0003]
As shown in FIG. 17, the automatic stop device 140 turns the drive mechanism on and off and elastically biases the operation lever 141 so as to return to the off position, and the operation lever 141 is detachably hooked to the on position. A locking hook (stop actuating member) 142 provided so as to be swingable as much as possible and a feed screw 143 that swings the locking hook 142 so that the operation lever 141 can be detached from the locking hook 142.
[0004]
The feed screw 143 is connected to the rotating shaft 146 of the non-slip roller 145 of the film feeding device 144 via a speed reducer 147, and is rotated by the number of times corresponding to the number of rotations of the non-slip roller 145.
[0005]
Then, the locking hook 142 is locked to a desired part of the feed screw 143, so that the locking screw 142 swings in the axial direction by the rotation of the feed screw 143, and the operating lever 141 is released to return to the OFF position. It has become.
[0006]
[Problems to be solved by the invention]
By the way, since this automatic stop device 140 measures the timing at which the operation lever 141 is released at the number of rotations of the non-slip roller 145, the elongation (temperature, roll) of the film 148 between the film feeding device 144 and the roll bale (not shown). Depending on the tightness of the belt), even if the locking hook 142 is set so that the roll bale stops at one rotation, there is a variation such as less than one rotation or winding more than one rotation. There was a problem.
[0007]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an automatic stopping device for a wrapping machine that solves the above-described problems and can obtain an accurate number of windings without being affected by the elongation of the film.
[0008]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a mounting table that rotatably supports a roll bale with its outer peripheral surface facing downward, and a support system that is rotatably supported around a vertical axis, and a drive system that transmits power to the mounting table. An automatic stop device for a wrapping machine comprising a clutch device that is configured and elastically biased to cut off transmission of driving force, and is rotated in one direction with one end exposed and connected to the driving system A shaft, a feed groove for feeding a member formed and engaged spirally on the outer periphery of one end of the rotary shaft to one end side, and a driven member engaged with the feed groove are connected to the shaft of the rotary shaft. A trigger mechanism that is movably supported in a direction and rotatably supported around an axis parallel to the rotation axis, and is connected to the trigger mechanism and to the clutch device, and the driven member is connected to the trigger mechanism. Push on the rotation axis When the driven member is engaged with the feed groove, the clutch is connected against the elastic force, and the driven member is rotated to the rotating shaft side. It is equipped with a trigger transmission system that sometimes releases the elastic force and disconnects the clutch.
[0009]
In addition, the roll bale is rotatably mounted with the outer peripheral surface facing downward, and a mounting table that is rotatably supported around the vertical axis, an engine for driving the mounting table, and the driving force of the engine are described above. An automatic stopping device for a wrapping machine that includes a centrifugal clutch that constitutes a drive system that transmits to a pedestal and that cuts off transmission of drive force when the engine speed is less than a predetermined speed, and is connected to the drive system. A rotating shaft that rotates in one direction with one end exposed, a feed groove for feeding a member that is spirally formed and engaged on the outer periphery of the one end of the rotating shaft to the one end side, A trigger mechanism that supports the driven member to be engaged so as to be movable in the axial direction of the rotating shaft and to be rotatable about an axis parallel to the rotating shaft, and is connected to the trigger mechanism and is a slot of the engine Is connected to the trigger mechanism to transmit a resilient force in a direction of rotating the driven member toward the rotation shaft, and resists the resilient force when the driven member is engaged with the feed groove. And a trigger transmission system for releasing the elastic force and closing the throttle when the driven member is rotated toward the rotating shaft.
[0010]
The rotating shaft may be coupled to the output side of the clutch device.
[0011]
It is preferable to provide a stopper for regulating the movement of the driven member in the axial direction on the rotating shaft so as to be adjustable.
[0012]
The rotating shaft may be arranged with the one end facing upward.
[0013]
The trigger mechanism is provided in a fixed system and extends in parallel with the rotation shaft. The trigger mechanism is supported by the guide rod so as to be slidable in the axial direction and rotatable about the axis, and the driven member is separated radially outward. A slide arm member that is supported by the guide rod, and is rotatably engaged with the slide arm member while allowing sliding movement of the slide arm member. A mediating arm for transmitting the rotational position of the driven member may be provided.
[0014]
In addition, an operation handle portion connected to the trigger mechanism for rotating the driven member against a resilient force received from the clutch device may be provided.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0016]
As shown in FIGS. 1, 2, and 3, the wrapping machine 50 includes a cart 75 that forms a handcart, and a roll bale 76 that is provided in the vicinity of the front end of the cart 75 in the hand pushing direction so as to be rotatable about a vertical axis. , The engine (internal combustion engine) 7 as a driving device provided on the carriage unit 75 for driving the mounting table 10, and a drive system for transmitting the driving force of the engine 7 to the mounting table 77, an automatic stop device 85 for automatically stopping the driving of the mounting table 10 when the film 130 is wound around the roll bail 76 by a predetermined number of turns, and a film roll provided at the rear end of the carriage unit 75 And a film feeding device 5 for supporting 78 in a feedable manner.
[0017]
The carriage 75 includes a main frame 1 that extends in the front-rear direction, an axle 2 that is integrally provided at the front of the main frame 1 so as to extend in the vehicle width direction, and wheels 3 that are rotatably provided at both ends of the axle 2. A vertical frame 4 that is integrally provided at the rear end of the main frame 1 so as to extend in the vertical direction and is grounded with a lower end as a stand; and a handle 6 that is vertically rotatable at a vertical intermediate position of the vertical frame 4. Consists of.
[0018]
A film feeding device 5 is provided on the upper part of the vertical frame 4.
[0019]
When the wrapping machine 50 is moved, the handle 6 is raised close to the horizontal so that the vertical frame 4 is lifted from the ground and can be moved manually, and is lowered downward during the packaging operation.
[0020]
As shown in FIG. 13 and FIG. 14, the mounting table 10 is rotatably supported by a vertical shaft 9 that is a standing shaft that is integrally provided upright at the front end portion of the main frame 1. It is designed to rotate.
[0021]
A fixed sprocket 101 for transmitting a rotational driving force to a roller 120 described later is integrally provided at the upper end of the vertical shaft 9.
[0022]
The lower part of the mounting table 10 includes a boss 104 for receiving the vertical shaft 9, a V pulley 19 for receiving a driving force from the engine 7, and a bracket 103 for supporting the upper part of the mounting table 10. A base 102 is formed. The boss 104, the V pulley 19, and the bracket 103 are integrally formed.
[0023]
A bearing 105 is inserted into the boss 104 so that the mounting table 10 can rotate about the vertical axis 9.
[0024]
A horizontal channel 106 extending in the horizontal direction is attached to the bracket 103 by bolts and nuts 107.
[0025]
A first side frame 109 and a second side frame 110 are attached to both ends of the lateral channel 106 with bolts and nuts 111, respectively.
[0026]
A bracket 108 for supporting one end side of a shaft 114 described later is welded in the middle of the lateral channel 106. A bearing 112 for pivotally supporting the shaft 114 is attached to the bracket 108, and a bearing 113 for pivotally supporting the other end of the shaft 114 is attached to the lower portion of the first side frame 109.
[0027]
A shaft 114 spanned between the bearings 112 and 113 is used to transmit a driving force to the roller 120 and is disposed substantially horizontally. A sprocket 115 engaged with the fixed sprocket 101 at a substantially right angle is fixed to one end of the shaft 114, and an output-side sprocket 116 is fixed to the other end protruding from the first side frame 109.
[0028]
Further, bearings 117 and 118 for pivotally supporting roller shafts 122 and 123 of rollers 120 described later are attached to the upper portions of the first side frame 109 and the second side frame 110, respectively.
[0029]
Two rollers 120 are pivotally supported in parallel and spaced apart from each other between the first side frame 109 and the second side frame 110.
[0030]
The roller 120 includes a cylindrical portion 121 formed at the center in the axial direction to wrap a belt 127, which will be described later, and roller shafts 122 and 123 that are integrally provided at both ends of the cylindrical portion 121 and extend in the axial direction on the central axis. It is configured. Each of the roller shafts 122 pivotally supported on the first side frame 109 side is formed so as to protrude outward from the first side frame 109, and a sprocket 124 for receiving a rotational driving force is formed at the protruding end. It is fixed.
[0031]
These sprockets 124 are connected to a sprocket 116 on the power output side via a chain 125.
[0032]
A stay 126 is horizontally attached between the first side frame 109 and the second side frame 110, and a belt 127 is wound around the stay 126 and each roller 120.
[0033]
The second side frame 110 is formed to have a low intermediate portion between the rollers 120, and a bale retainer 128 is provided on the second side frame 110 to prevent the mounted roll bail 76 from falling from the low portion. Is provided. The bale presser 128 can adjust the extension length in the roller axial direction in accordance with the width of the roll bale 76 to be mounted.
[0034]
As shown in FIGS. 1 and 15, the mounting table 10 adjusts the center height of the roll bale 76 to the center in the height direction of the film roll 78 supported by the film feeding device 5 when the roll bale 76 is mounted. Are arranged as follows.
[0035]
Two parallel rollers 120 of the mounting table 10 can be placed close to a position where the lower edge 131 of the film 130 extending from the film roll 78 does not contact the roller 120 when the roll bale 76 is placed thereon. It is provided at such an interval. Thereby, a deformation | transformation roll, a roll with low tightness, etc. cannot fall easily with the tension | tensile_strength of the film 130 during an operation | work.
[0036]
As shown in FIGS. 1 and 2, the engine 7 is provided on one side of the main frame 1 with a drive shaft 79 facing rearward.
[0037]
As shown in FIGS. 1 and 4, the drive system 77 includes a clutch device 14 that connects the driving force from the engine 7 so as to be disconnected, and a speed reducer 8 that is coupled to the engine 7 via the clutch device 14. .
[0038]
As shown in FIGS. 4 and 5, the clutch device 14 includes a V pulley 11 attached to the drive shaft 79 of the engine 7, a V pulley 12 provided on the input shaft 84 of the speed reducer 8, and these V pulleys 11. , 12 is connected to the V-belt 13 that has been slackened so as not to transmit power, and the V-belt 13 is switchably tensioned to connect (turn on) or disconnect the power transmission between the V-pulleys 11 and 12 ( And a tension pulley 15 that is turned off.
[0039]
The tension pulley 15 is swingably attached to a pin 82 that is a pivotal fulcrum of a bracket 81 fixed to the engine 7 and is rotatably supported at one end of a tension arm 80 that swings both ends. Power is transmitted by pressing, and power is cut off by leaving.
[0040]
Between the tension arm 80 and the bracket 81, a tension spring 83 for elastically urging the tension pulley 15 in a direction away from the V-belt 13 is attached, and the clutch device 14 cuts off transmission of driving force. So that the bullets are energized.
[0041]
The tension arm 80 is connected to an automatic stop device 85, which will be described later, at the other end, and receives the force from the automatic stop device 85 to press the tension pulley 15 against the V-belt 13 against the tension spring 83. It is like that.
[0042]
As shown in FIGS. 1 and 4, the speed reducer 8 is a worm speed reducer and is provided on the other side of the main frame 1 with the input shaft 84 facing forward and the output shaft 16 facing upward. ing.
[0043]
A V pulley 17 connected to the V pulley 19 of the mounting table 10 via a V belt 20 and a sprocket 18 for transmitting rotation to an automatic stop device 85 described later are attached to the output shaft 16.
[0044]
When the engine 7 is operated and the clutch is engaged by the clutch device 14, the mounting table 10 rotates, and the roll bale 76 placed on the mounting table 10 rotates about the vertical axis 9 and at the same time, It rotates around an axis and is wrapped with a film 130 fed from the film feeding device 5.
[0045]
As shown in FIGS. 1 and 8, the automatic stop device 85 is connected to the sprocket 18 provided on the output shaft 16 of the speed reducer 8 via the chain 28 and the sprocket 27, and exposes one end portion in one direction. A feed screw shaft (rotation shaft) 25 to be rotated, a feed groove 26 formed in a spiral shape on the outer periphery of one end of the feed screw shaft 25, and a rotary piece 43 as a driven member engaged with the feed groove 26, A trigger mechanism 86 that is movably supported in the axial direction of the feed screw shaft 25 and is pivotally supported around an axis parallel to the feed screw shaft 25, and is connected to the trigger mechanism 86 and to the clutch device 14 to be triggered. The mechanism 86 is transmitted with a resilient force in a direction to rotate the rotary piece 43 toward the feed screw shaft 25, and the clutch is engaged against the resilient force when the rotary piece 43 is engaged with the feed groove 26. Connect and turn It is constituted by a trigger transmission system 87 to cut the clutch to release the elastic force when the frame 43 is rotated in the screw shaft 25 side feed.
[0046]
The feed screw shaft 25 is provided on a holder 22 mounted on a bracket 21 extending from the main frame 1 to the speed reducer 8 so as to be rotatable and has an upper end exposed.
[0047]
Specifically, as shown in FIGS. 8 and 9, a vertical housing 24 is provided at the base 23 of the holder 22, and the vertical housing 24 is connected to a feed screw shaft 25 via a bearing 88 assembled therein. Is rotatably supported.
[0048]
The feed groove 26 is formed on the upper end side of the feed screw shaft 25, and a sprocket 27 is fixed to the lower side of the feed screw shaft 25.
[0049]
The trigger mechanism 86 includes a slide guide post 31 that is a guide rod provided on the holder 22 as a fixed system so as to extend in parallel with the feed screw shaft 25 via the vertical support 89 and the upper and lower stays 29 and 30, and the slide guide post 31. A movable actuating member (slide arm member) 33 that is supported so as to be slidable in the axial direction and rotatable around the axis and that supports the rotary piece 43 spaced apart radially outwardly, and is supported rotatably on the slide guide post 31. And a mediating arm 32 for transmitting the rotation position of the rotary piece 43 to the trigger transmission system 87, which is engaged so as to rotate together with the movement operation member 33 while allowing the slide movement of the movement operation member 33. Configured.
[0050]
The vertical struts 89 are provided so as to rise from the base 23 of the holder 22, and the upper and lower stays 29 and 30 are welded to the vertical struts 89 so as to be horizontally spaced apart from each other. The slide guide post 31 is bolted between the upper stay 29 and the lower stay 30.
[0051]
The movement actuating member 33 includes a boss 39 that is slidably and rotatably inserted into the slide guide post 31, an arm 40 that extends substantially horizontally from the boss 39 toward the feed screw shaft 25, and an opposite side of the arm 40 from the boss 39. And a guide arm 41 which extends to the intermediate arm 32 and is engaged with the intermediate arm 32 so as to be movable up and down.
[0052]
The boss 39 is formed with a hole 42 through which the slide guide post 31 is inserted. A slide bearing 45 is fitted into the hole 42 so that the slide guide post 31 can be slid up and down. It has become.
[0053]
A rotary piece 43 is attached to the tip of the arm 40 so as to be rotatable about an axis parallel to the feed screw shaft 25.
[0054]
The rotary piece 43 has an abacus ball shape, and a crest 94 formed on the outer periphery thereof is formed so as to mesh with the feed groove 26 of the feed screw shaft 25.
[0055]
A ball bearing 44 is attached to the distal end of the guide arm 41 so as to be engaged in a slide groove 35 of an intermediate arm 32 described later.
[0056]
The intermediate arm 32 is rotatably engaged in the vicinity of the lower end of the slide guide post 31 and extends in the extending direction of the guide arm 41, and the vertical arm 34 extends upward from the lower arm in parallel with the slide guide post 31. The upper arm 36 is formed integrally with the vertical arm 34 and is rotatably engaged in the vicinity of the upper end of the slide guide post 31 and extends outwardly in the radial direction of the vertical arm 34.
[0057]
The vertical arm 34 is formed with a vertically long slide groove 35 for guiding the ball bearing 44 attached to the tip of the guide arm 41 so as to be movable up and down and for restricting movement in the swinging direction.
[0058]
When the movement actuating member 33 and the mediating arm 32 are attached to the slide guide post 31, the ball bearing 44 enters the slide groove 35 of the mediating arm 32. When the movement actuating member 33 moves up and down, the ball bearing 44 moves in the slide groove 35. While being able to move up and down, movement in the swinging direction is restricted, and the mediating arm 32 and the movement actuating member 33 are swung in conjunction with each other.
[0059]
The upper arm 36 has a hole 38 for engaging a lot 37 of a trigger transmission system 87, which will be described later, with an end portion protruding radially outward.
[0060]
Further, a rod 49 for manually lifting the movement operation member 33 and retracting the rotary piece 43 above the feed screw shaft 25 is attached to the movement operation member 33.
[0061]
A plurality of holes 46 and 47 are formed in the slide guide post 31 so as to be spaced apart from each other in the vertical direction. These holes 46 and 47 are for inserting a beta pin 48 as a stopper. By selectively inserting the beta pin 48 into any one of the holes 46 and 47, the height of the lowering regulation of the moving operation member 33 can be adjusted. The number of wrappings of the film 130 can be changed.
[0062]
The positions of the holes 46 and 47 of the slide guide post 31 are based on the relationship between the rotation of the mounting table 10 and the pitch of the feed groove 26. When the beta pin 48 is in the upper hole 46, the roll bale 76 on the mounting table 10 is When there is a beta pin 48 in the lower hole 47 so that the rotary piece 43 is detached from the feed screw shaft 25 when it rotates once, the rotary piece 43 is fed when the roll bail 76 on the mounting table 10 rotates twice. The dimensions are off the shaft 25.
[0063]
As shown in FIGS. 1 and 6, the trigger transmission system 87 includes an operation handle 91 for manually operating the trigger mechanism 86 and the clutch device 14, and a lot 37 for connecting the operation handle 91 and the trigger mechanism 86. And a pull wire 69 for connecting the operation handle portion 91 and the clutch device 14 to each other.
[0064]
As shown in FIGS. 3, 6, and 7, the operation handle portion 91 is used for manually rotating the rotary piece 43 of the trigger mechanism 86 against the elastic force received from the clutch device 14 via the pull wire 69. And a lever shaft 55 that is rotatably supported by the vertical frame 4 and the vertical frame 51 of the film feeding device 5 on the upper side thereof via stays 52, 53, and 54 and that extends in the vertical direction, and an upper end of the lever shaft 55. And a horizontal stay 58 extending in the horizontal direction, a grip 59 attached to the tip of the horizontal stay 58, and a horizontal arm 60 provided integrally at the lower end of the lever shaft 55 and extending in the horizontal direction.
[0065]
The stays 52, 53, and 54 are formed so as to be spaced apart in the vertical direction and extend in the horizontal direction, and support the vicinity of the upper and lower ends and the intermediate position of the lever shaft 55.
[0066]
The lever shaft 55 is configured by integrally connecting a large-diameter lower lever shaft 57 positioned in the lower half portion and an upper lever shaft 56 positioned in the upper half portion and having a smaller diameter than the lower lever shaft 57.
[0067]
The horizontal stay 58 is disposed above the film feeding device 5.
[0068]
In the horizontal arm 60, a swing boss 61 for locking the pull wire 69 is attached to the distal end of the horizontal arm 60 so as to be swingable. A hole 62 for engaging the lot 37 is provided on the base end side of the swing boss 61. It has been. Further, the horizontal arm 60 has an extension 63 that extends on the opposite side in the radial direction around the lever shaft 55.
[0069]
Bolts 66 and 67 as stoppers for restricting the rotation range of the horizontal arm 60 are provided on the stay 54 that supports the vicinity of the lower end of the lever shaft 55.
[0070]
Specifically, the bolts 66 and 67 are screwed into rising pieces 64 and 65 that are raised by bending the edge of the stay 54 with the tips toward the extension 63, and the lever shaft 55 swings. At this time, the swinging width of the horizontal arm 60 is regulated by hitting the extension 63. The bolts 66 and 67 can adjust the rotation range of the horizontal arm 60 by adjusting the screwing depth.
[0071]
The stay 54 is also formed with a rising piece 68 for fixing an outer cap 70 of a pull wire 69 described later.
[0072]
The lot 37 is configured to connect the horizontal arm 60 and the upper arm 36 of the intermediate arm 32, and is stretched substantially horizontally between the horizontal arm 60 and the upper arm 36.
[0073]
Specifically, the lot 37 is pivotally supported by the holes 62 and 38 at both ends, respectively.
[0074]
As shown in FIGS. 6 and 12, the pull wire 69 has an inner bolt 72 with a threaded end fixed to one end side of the inner wire 71, and the inner bolt 72 penetrates through the hole of the swing boss 61 and penetrates through the hole. A compression spring 73 is placed over the part, and the tip is fixed with a double nut 74. That is, the compression spring 73 is compressed between the double nut 74 and the swing boss 61 while surrounding the inner bolt 72.
[0075]
The outer cap 70 on one end side of the pull wire 69 is fixed to the rising piece 68 with a nut.
[0076]
As shown in FIG. 5, the other end side of the inner wire 71 of the pull wire 69 is attached to the other end of the tension arm 80 of the clutch device 14, and the outer cap 70 on the other end side of the pull wire 69 is connected to the tension arm 80. A nut 81 is attached to the supporting bracket 81.
[0077]
The pull wire 69 transmits the tensile force received from the tension spring 83 to the horizontal arm 60 so that the horizontal arm 60 is always pulled.
[0078]
Next, the operation will be described.
[0079]
As shown in FIG. 1, when the rotary piece 43 is on the feed screw shaft 25, the tension pulley 15 shown in FIG. 5 is separated from the V-belt 13, and the clutch is disengaged. .
[0080]
In this state, the roll bale 76 to be packaged is placed on the mounting table 10, and the end of the film is bound to somewhere on the mounting table 10.
[0081]
As shown in FIG. 6, when the grip 59 of the operation handle 91 is turned in the direction of arrow P clockwise in plan view, the horizontal arm 60 connected via the lever shaft 55 is also rotated in the same direction.
[0082]
The swing boss 61 presses the compression spring 73 against the double nut 74 side, and pulls the inner bolt 72 of the pull wire 69 leftward with respect to the force of the compression spring 73.
[0083]
When the inner bolt 72 is pulled, the tension arm 80 shown in FIG. 5 rotates in the direction of arrow R against the tension spring 83 and presses the tension pulley 15 against the V-belt 13. Thereby, the power of the engine 7 is connected to the speed reducer 8 side, the mounting table 10 is rotated, and the packaging operation is started.
[0084]
As shown in FIG. 1, the rotational force of the speed reducer 8 rotates the V pulley 19 via the V pulley 17 and the V belt 20, and the entire mounting table 10 rotates about the vertical axis 9.
[0085]
As shown in FIG. 13, the sprocket 115 incorporated in the mounting table 10 revolves around the fixed sprocket 101 and rotates while meshing with the fixed sprocket 101.
[0086]
The rotation of the shaft 114 and the sprocket 116 that rotate integrally with the sprocket 115 causes the sprocket 124 to rotate via the chain 125 and the roller 120 and the belt 127 to rotate.
[0087]
The roll bale 76 placed on the belt 127 rotates about the horizontal axis while rotating about the vertical axis 9, and the film 130 is wound around the roll bale 76.
[0088]
On the other hand, when the grip 59 shown in FIG. 6 is turned, the lot 37 attached to the horizontal arm 60 is also pulled, and the intermediate arm 32 connected via the lot 37 is also rotated counterclockwise in plan view around the slide guide post 31. Is rotated.
[0089]
Since the mediating arm 32 and the movement actuating member 33 swing in conjunction with each other via a ball bearing 44, the rotary piece 43 attached to the movement actuating member 33 is also viewed in plan with the slide guide post 31 as the center. It rotates counterclockwise and deviates from the position on the feed screw shaft 25.
[0090]
As shown in FIG. 11, the movement actuating member 33 falls along the slide guide post 31 and stops by hitting the beta pin 48.
[0091]
Here, when the hand is released from the grip 59, the tension spring 83 of the clutch device 14 shown in FIG. 5 tries to turn the tension arm 80 in the direction opposite to the arrow R. This force is caused by the inner bolt shown in FIG. The force tends to move 72 toward the double nut 74, and the compression spring 73 is compressed.
[0092]
The compression force of the compression spring 73 is a force that attempts to rotate the rotary piece 43 of the moving operation member 33 in the direction of arrow V shown in FIG. 11 via the horizontal arm 60, the lot 37, and the intermediate arm 32. Is prevented by the feed screw shaft 25 and cannot rotate and becomes a force for pressing the rotary piece 43 against the screw shaft 25. The crest 94 of the rotary piece 43 is engaged with the feed groove 26 of the feed screw shaft 25, and this state is maintained.
[0093]
In this state, the power of the engine 7 is connected to the speed reducer 8, and the feed screw shaft 25 connected to the output shaft 16 of the speed reducer 8 via the sprocket 18, the chain 28 and the sprocket 27 continues to rotate. ing.
[0094]
As the feed screw shaft 25 rotates, a force that moves upward along the feed groove 26 acts on the rotary piece 43 that meshes with the feed groove 26. As shown in FIG. With the movement of 43, it is moved upward along the slide guide post 31.
[0095]
When the rotary piece 43 reaches the upper end of the feed screw shaft 25, there is nothing blocking the rotation of the rotary piece 43, and the movement actuating member 33 and the mediating arm 32 are rotated toward their original positions. At this time, the horizontal arm 60 is also rotated and stopped when the extension 63 hits the bolt 66. At this time, the rotary piece 43 returns to the state of being on the feed screw shaft 25.
[0096]
The tension arm 80 connected to the horizontal arm 60 via the pull wire 69 is also rotated by the elastic force of the tension spring 83, and the tension pulley 15 is separated from the V belt 13 to disconnect the clutch. That is, the packaging operation is finished and the wrapping machine 50 is automatically stopped.
[0097]
At this time, when the beta pin 48 is in the upper hole 46, the packaging operation is stopped when the roll bail 76 rotates once and the film 130 is double-wound. When the beta pin 48 is in the lower hole 47, the roll bail 76 is stopped. Wrapping operation is stopped when the film 130 is quadruple wound by two rotations.
[0098]
When it is desired to change the number of wrap films wound, the holes 46 and 47 into which the beta pins 48 are inserted are changed with the clutch disengaged.
[0099]
Further, during the packaging operation, when it is desired to stop the packaging operation for some reason, the grip 59 shown in FIG. 6 is rotated in the P direction.
[0100]
The horizontal arm 60 is rotated clockwise in plan view, the moving operation member 33 to which force is transmitted via the lot 37 and the intermediate arm 32 is rotated counterclockwise, and the rotary piece 43 is separated from the feed screw shaft 25. Is disengaged.
[0101]
While holding the grip 59 in this state, the rod 49 shown in FIG. 8 is lifted by hand, and the rotary piece 43 is moved to a height (FIG. 8) that is disengaged from the upper end of the feed screw shaft 25.
[0102]
When the hand is released from the grip 59, the rotary piece 43 is on the feed screw shaft 25, and the tension arm 80 can also be separated from the V-belt 13 to disconnect the clutch.
[0103]
In this manner, the roll bale 76 is rotatably mounted with the outer peripheral surface facing downward, and the mounting table 10 that is rotatably supported around the vertical axis and the drive system 77 that transmits power to the mounting table 10 are configured to provide driving force. In the automatic stop device 85 of the wrapping machine 50 provided with the clutch device 14 for cutting or connecting the transmission, the feed screw shaft 25 connected to the drive system 77 and exposed in one end and rotated in one direction, and the feed screw A feed groove 26 for feeding a member formed spirally on the outer periphery of one end of the shaft 25 to the one end side and a rotary piece 43 engaged with the feed groove 26 are arranged in the axial direction of the feed screw shaft 25. And a trigger mechanism 86 that is supported so as to be freely movable and rotatable about an axis parallel to the feed screw shaft 25, and is connected to the trigger mechanism 86 and to the clutch device 14, and is connected to the trigger mechanism 86. The elastic force in the direction of pressing the frame 43 against the feed screw shaft 25 is transmitted. When the rotary piece 43 is engaged with the feed groove 26, the clutch is connected against the elastic force and the rotary piece 43 is fed. Since it has a trigger transmission system 87 that releases the elastic force and releases the clutch when it is turned to the screw shaft 25 side, the film 130 is wound around the roll bail 76 by the number of turns corresponding to the number of rotations of the mounting table 10. It is possible to obtain an accurate winding number without being affected by the elongation of the film.
[0104]
Since the feed screw shaft 25 is connected to the output side of the clutch device 14, the feed screw shaft 25 can be stopped when the clutch is disengaged, and the mounting position of the beta pin 48 can be maintained even with the engine 7 running. Simple maintenance such as changing
[0105]
In addition, since the beta pin 48 for restricting the movement of the rotary piece 43 in the axial direction is provided on the feed screw shaft 25, the number of turns of the film 130 can be easily switched.
[0106]
Since the feed screw shaft 25 is disposed with one end having the feed groove 26 facing upward, the moving operation member 33 of the beta pin 48 is simply moved by moving the rotary piece 43 radially outward of the feed screw shaft 25. It can be moved to the mounting position, and the automatic stop device 85 can have a simple structure.
[0107]
The trigger mechanism 86 is provided on the holder 22 and extends parallel to the feed screw shaft 25. The trigger mechanism 86 is supported by the slide guide post 31 so as to be slidable in the axial direction and rotatable about the axis. A movement actuating member 33 that is spaced apart and supported outwardly, and is rotatably supported by the slide guide post 31, and is engaged so as to rotate together with the movement actuating member 33 while allowing the movement actuating member 33 to slide. Since the trigger transmission system 87 is provided with the intermediate arm 32 for transmitting the rotational position of the rotation piece 43, the rotation piece 43 can be stably engaged with the screw shaft 25 by the force received from the trigger transmission system 87. At the same time, it is possible to reliably release the force received from the trigger transmission system 87 when the rotary piece 43 is detached from the feed screw shaft 25. In addition, the trigger mechanism 86 can be formed in a simple structure.
[0108]
Since the operation handle portion 91 connected to the trigger mechanism 86 and rotating the rotation piece 43 against the elastic force received from the clutch device 14 is provided, the rotation piece 43 can be easily operated by operating the operation handle portion 91. It can be dropped to start the packaging operation, and the clutch can be easily connected or disconnected.
[0109]
Although the feed screw shaft 25 is installed separately from the speed reducer 8, the output shaft 16 and the feed screw shaft may be integrated by threading the end of the output shaft 16 of the speed reducer 8.
[0110]
Although the rotary piece 43 is provided rotatably on the movement actuating member 33, it may be formed integrally with the movement actuating member 33.
[0111]
In addition, the tension clutch is operated by the pull wire 69. However, as shown in FIG. 16, the transmission of the driving force is cut off when the rotational speed of the engine 7 is less than the predetermined rotational speed instead of the clutch device 14. The pulling wire 69 may be connected to the engine throttle lever 93 by using the centrifugal clutch 92 that performs the above operation.
[0112]
Since the transmission of power is cut off when the rotational speed of the engine 7 is reduced, the rotational speed of the engine when the packaging work is not performed can be reduced, fuel can be saved, and the operating noise can be reduced.
[0113]
In addition, description is abbreviate | omitted about the structure similar to the above-mentioned, and a same sign is attached | subjected in a figure.
[0114]
【The invention's effect】
In short, according to the present invention, an accurate winding number can be obtained without being affected by the elongation of the film.
[Brief description of the drawings]
FIG. 1 is a perspective view of a wrapping machine showing a preferred embodiment of the present invention.
FIG. 2 is a plan view of a wrapping machine.
FIG. 3 is a side view of a wrapping machine.
4 is a perspective view taken along the line IV-IV in FIG. 2;
5 is a cross-sectional view taken along the line IV-IV in FIG. 2;
6 is an enlarged view of a main part of FIG.
7 is an enlarged view of a main part of FIG. 3. FIG.
FIG. 8 is an enlarged perspective view of a main part of FIG. 1;
9 is a cross-sectional view taken along line IX-IX in FIG.
10 is a cross-sectional view taken along line IX-IX in FIG. 6 in which a driven member is engaged with a feed groove.
11 is a cross-sectional view taken along line XI-XI in FIG.
12 is an enlarged perspective view of a main part of FIG. 1. FIG.
FIG. 13 is a front view of a wrapping machine.
14 is a cross-sectional view taken along line XIV-XIV in FIG.
15 is a side view of FIG. 13 with a roll bale mounted thereon.
FIG. 16 is an enlarged plan view of a main part of a lapping machine showing another embodiment.
FIG. 17 is an enlarged view of a main part of an automatic stop device of a conventional wrapping machine.
[Explanation of symbols]
10 Mounting table
14 Clutch device
25 Rotating shaft
26 Feed groove
43 Follower
50 Wrapping machine
76 roll veil
77 Drive system
85 Automatic stop device
86 Trigger mechanism
87 Trigger transmission system

Claims (7)

A roll bale is rotatably mounted with the outer peripheral surface facing downward, and a mounting table that is supported rotatably about a vertical axis, and a drive system that transmits power to the mounting table are configured to cut off transmission of driving force. An automatic stopping device for a wrapping machine, comprising a clutch device that is urged and energized, and a rotating shaft connected to the drive system and exposed in one direction and rotated in one direction, and an outer periphery of one end portion of the rotating shaft A feed groove for feeding a member formed in a spiral shape to the one end side, and a driven member engaged with the feed groove so as to be movable in the axial direction of the rotation shaft and a rotation shaft A trigger mechanism that is supported rotatably about a parallel axis, and is coupled to the trigger mechanism and to the clutch device, and transmits a resilient force in a direction in which the driven member is pressed against the rotation shaft. And the driven member is Trigger transmission to engage the clutch against the elastic force when engaged with the feed groove and to release the elastic force and disconnect the clutch when the driven member is rotated to the rotating shaft side An automatic stopping device for a wrapping machine characterized by comprising a system. The roll bale is rotatably mounted with the outer peripheral surface facing downward, and a mounting table supported rotatably about the vertical axis, an engine for driving the mounting table, and the driving force of the engine to the mounting table An automatic stop device for a wrapping machine that includes a centrifugal clutch that constitutes a drive system for transmission and has a centrifugal clutch that cuts off transmission of drive force when the rotational speed of the engine is less than a predetermined rotational speed. A rotary shaft that is rotated in one direction with the shaft exposed, a feed groove for feeding a member that is spirally formed and engaged on the outer periphery of one end of the rotary shaft to one end side, and engages with the feed groove And a trigger mechanism that supports the driven member so as to be movable in the axial direction of the rotating shaft, and is rotatably supported around an axis parallel to the rotating shaft, and is connected to the trigger mechanism and connected to the throttle of the engine. And above A triggering force is transmitted to the trigger mechanism in a direction to rotate the driven member toward the rotating shaft, and the throttle is resisted against the resilient force when the driven member is engaged with the feed groove. An automatic stopping device for a wrapping machine, comprising: a trigger transmission system that opens and closes the throttle by releasing a resilient force when the driven member is rotated to the rotation shaft side. 2. The automatic stopping device for a wrapping machine according to claim 1, wherein the rotating shaft is connected to an output side of the clutch device. The automatic stop device for a wrapping machine according to any one of claims 1 to 3, wherein a stopper is provided on the rotating shaft so as to regulate the movement of the driven member in the axial direction. The automatic stopping device for a wrapping machine according to any one of claims 1 to 4, wherein the rotating shaft is arranged with the one end facing upward. The trigger mechanism is provided in a fixed system and extends in parallel with the rotation shaft. The trigger mechanism is supported by the guide rod so as to be slidable in the axial direction and rotatable about the axis, and the driven member is spaced radially outward. A slide arm member that is supported by the guide rod, and is rotatably engaged with the slide arm member while allowing sliding movement of the slide arm member. The automatic stopping device for a wrapping machine according to any one of claims 1 to 5, further comprising a mediating arm for transmitting the rotational position of the driven member. The automatic stop device for a wrapping machine according to any one of claims 1 to 6, further comprising an operation handle portion that is connected to the trigger mechanism and rotates the driven member against a resilient force received from the clutch device.

Images