JP2002125449A - Wrapping machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wrapping machine which is used for winding a film on a roll bale to wrap the roll bale, can prevent the breakage of the film, when the winding of the film on the roll bale R is started, and can further accurately stop a bale support or an arm at a prescribed position, when the winding is finished. SOLUTION: This wrapping machine for winding the film on a roll bale to wrap the roll bale with the film, characterized by carrying out the rotation of the arm or bale support to be rotated to wind the film 21 delivered from a stretch device on the roll bale, with a motor M driven with a pressure oil extruded from a hydraulic pump, disposing a low speed circuit (a) connected to a throttle valve (u) and an ordinary high speed circuit (b) not passing through the throttle valve (u), in the hydraulic circuit of the hydraulic motor M, and performing the switching of the circuits by the operation of a switch disposed in a control box through the control of solenoid values with electric signals.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pasture roll bale formed into a roll by a roll baler,
The present invention relates to an improvement in a roll bale wrapping machine for winding and packaging a film.

[0002]

2. Description of the Related Art For example, as shown in FIG. 1, a wrapping machine A for a roll bale is provided so that the wrapping machine can be moved by being towed by a tractor or transported to a desired place for installation. Frame b, roll veil R
Is supported on a frame f, and a rolling means 1a for rolling the roll bale R supported on the upper surface side is supported on a frame f. The arm 3 mounted with the stretching device 2 for loading a roll of film wound around the roll bale R mounted on the bale support 1 is mounted on the frame f so as to rotate around the roll bale R. The frame f is driven by hydraulic pressure guided from a hydraulic device mounted on a tractor or a hydraulic device separately provided, which is supported on a vertical turning shaft 10 provided on the ceiling portion and the ceiling portion of the frame f. The hydraulic motor M is mounted, and its output shaft is transmitted to the vertical turning shaft 10 via the transmission mechanism 11, whereby the roll bale R mounted on the bale support 1 is rolled. means While tumbling at a predetermined speed by a, by pivoting the arm 3 to 支架 stretch device 2, there are those in a form is configured so as to wrap by winding a film on the peripheral surface of the roll bale R.

Further, as another type of lapping machine A, as shown in FIGS. 2 and 3, the lapping machine A can be installed by moving the vehicle by towing by a tractor or by moving it to a desired place. The bale support 1 for rotatably supporting the roll bale R to be mounted on the frame f is mounted on the frame f so as to be freely swung by a vertical swivel shaft 10 provided at a central portion of a bottom surface thereof. And a hydraulic motor M driven by hydraulic pressure guided from a hydraulic device mounted on a tractor for towing or transport or a hydraulic device separately provided, and an output shaft thereof is connected to the transmission mechanism 1.
1 and is connected to the vertical pivot shaft 10 via a motor 1 so that the hydraulic motor M drives the bail support 1 to rotate around the vertical pivot 10 at a predetermined speed. Rolling means 1a for rolling the roll bale R to be supported is mounted on the upper surface side, and is driven by a hydraulic motor (not shown) separately mounted.

On the frame f, an arm 3 is formed in a pillar shape at a position adjacent to the bail support 1 and fixedly erected, and a stretching device 2 is supported on the arm 3 and loaded thereon. There is a form in which a film 21 fed from a roll 20 of the rolled film is wound around a peripheral surface of a roll bale R mounted on a rotating bale support 1 and wrapped.

[0005]

In a conventional roll baler wrapping machine A, a roll bale R is placed on the upper surface of a bale support 1 fixedly supported on a frame f, and an arm which rotates around the roll bale R is mounted thereon. When the stretching device 2 mounted on the rotating end of the arm 3 is turned, the stretching device 2 mounted on the rotating end of the long arm 3 is rotated by the arm 3. Swivel and roll bale R
The wrapping is performed by winding the film around the peripheral surface of, so that in the lapping operation, when the hydraulic motor M is driven to rotate the arm 3 to start the lapping operation, the heavy stretch device 2 is supported. By rotating the long arm 3, a large shock is transmitted to the film 21 fed from the stretching device 2 in the initial stage of the rotation, causing the film to be torn or sagged, thereby causing a problem in the lapping operation. There is.

Further, when the wrapping operation by winding the film around the peripheral surface of the roll bale R is completed and the driving of the hydraulic motor M is stopped, the arm 3 continues to rotate due to inertia. The arm 3 is moved to a predetermined position corresponding to the cutting device in order to cut the film fed from the stretching device 2 supported on the rotating end by a cutting device (not shown) mounted on the frame f. There is a problem that it is difficult to stop, and if the lock pin is protruded to forcibly stop the arm 3 at a predetermined position, a large shock is applied, thereby causing damage to the lock pin and a portion engaged with the lock pin. As you start to get sick, you have problems with your lap.

[0007] Next, as shown in FIG.
A bale support 1 for rollingly supporting the arm 3 is supported on a frame f by a vertical turning shaft 10, and an arm 3 supporting a stretching device 2 is formed around the support on a frame f and fixed to the frame f. In the case of the wrapping machine A in the form of being supported, the bale support 1 that rotates like a turntable
However, by equipping the rolling means 1a for rolling the roll bale R to be supported and a separate hydraulic motor or the like for driving the rolling means R, the weight of the rolling means 1a itself becomes considerably large, and moreover, the weight is about 1 ton. By rotating while supporting the roll bale R, a much larger shock than in the case of the lapping machine A of the above-described embodiment is generated at the start and end of the lapping operation.
As a result of being added to 1, tearing and sagging are more likely to occur.

In addition, for the work of loading and unloading the roll bale R, the bale support 1 is composed of a pair of rollers 12 supporting the roll bale R and an endless belt 13 wound around the pair of rollers 12. It is necessary to stop the roller 12 at the predetermined position where the axial direction of the rollers 12 of the moving means 1a is aligned with the direction in which the bail support 1 is rotated by dumping. Further, when the film has been wound, the film is removed from the stretching device 2 side. A cutting device 16 for cutting is mounted on the side surface of the body of the bale support 1, and when the roll bale R that has been wrapped is discharged by the dump rotation of the bale support 1, the cutting device 16 is mounted. Is designed to take out the end of the film from the stretching device 2, so that it is necessary to stop the cutting device 16 correctly when it comes to a predetermined position. However, since the bale support 1 is rotating with a large inertia, it is necessary to restrict the stop position to the fixed position without causing damage to them by the lock pin to be protruded and retracted and the engaging member to be engaged therewith. There is a further problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem occurring in the conventional means, and it is intended to prevent the film from being torn at the beginning of winding the film on the roll bale R, and at the end of winding. It is an object of the present invention to provide a new means for properly stopping a bale support or an arm at a predetermined position.

[0010]

According to the present invention, as a means for achieving the above-mentioned object, an arm or a bale pedestal is rotated so that a film 21 fed from a stretching device is wound around a roll bale. Driving is performed by a motor M operated by pressure oil discharged from a hydraulic pump. A low-speed circuit a having a throttle valve u connected to a hydraulic circuit of the hydraulic motor M and a normal high-speed circuit b without a throttle valve u A lapping machine, wherein the switching of these circuits is performed by controlling a solenoid valve by an electric signal by operating a switch provided in the control box. Arm 3 or bail support 1 which turns so as to wind film 21 unreeled from 2 The hydraulic circuit of the hydraulic motor M to be rotationally driven has a solenoid valve V1 that closes when energization is turned on to form a low-speed circuit a through a throttle valve u, and a high-speed valve that opens when energization is turned off and does not pass through the throttle valve u. The solenoid valve V1 forming the circuit b and the hydraulic circuit for the low-speed circuit a and the high-speed circuit b are opened by turning on the energization, and the hydraulic circuit for the low-speed circuit a and the high-speed circuit b are closed when the energization is off. Solenoid valve V to shut off hydraulic circuit
And an electric circuit for controlling them, a switch S
A low-speed control circuit 70 that is closed by connecting the switching contact swL for the low-speed circuit of W1 to turn on and close the solenoid valve V1, and a connection circuit that turns on and opens the solenoid valve V2 by closing the circuit 70 A connection circuit 74 for closing the solenoid valve V3 by turning on the solenoid valve V3, and a self-holding circuit 72 for holding the solenoid valve V2 and the solenoid valve V3 in the on-state are provided. 7
2 is a lapping machine characterized in that when the switch SW1 is released to a neutral position, the solenoid valve V3 is maintained in a closed state when the switch SW1 is released to a neutral position. Machine A frame f
The bale support 1 is supported on the upper surface side of the bale so as to be able to dump to the side, and a counter device 6 for measuring the number of rotations of the bale support 1 is mounted on the frame f on the lower surface side of the bale support 1. A wrapping machine characterized in that the wrapping machine is mounted and arranged at a portion exposed by the dump rotation to the side of the bail support 1. The support base 1 is mounted so that it can be dumped and rotated by a hydraulically operated dump cylinder 15, and the turning operation of the bail support base 1 is stopped at a predetermined position by the engagement of the lock pin 50 and the lock pin hole 510 that enter and exit. The lock device 5 is provided with a switch SW4 which is turned on when the lock pin 50 and the lock pin hole 510 are fitted to each other.
To the electric circuit to control the solenoid valve that switches the hydraulic circuit of the dump cylinder 15 between the dump rotation side and the dump return side, and switches the hydraulic circuit of the dump cylinder 15 to the dump rotation side by turning on the switch SW4. A lapping machine characterized by being connected so as to close an electric circuit of a solenoid valve.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A lapping machine A according to the present invention.
Is a rotary drive of an arm 3 supporting a stretch device 2 at a rotation end of the frame f so as to be pivoted on a frame f by a vertical pivot shaft 10 as shown in FIG. 1, or as shown in FIG. The rotation drive of the bail support 1 is pivotally mounted on the frame f by a vertical rotation shaft 10 and the roll bale R mounted on the upper surface thereof is rotated in a turntable shape. The operation is performed by the hydraulic motor M to be set.

As shown in FIG. 4, the hydraulic motor M is provided with a throttle valve u incorporated in a hydraulic control circuit W for controlling the rotation thereof, and a low-speed circuit a for rotating the hydraulic motor M at a low speed. The hydraulic motor M is connected to a high-speed circuit b that rotates the hydraulic motor M at a normal speed without passing through the valve u, and the connection of these hydraulic circuits a and b to the hydraulic motor M is switched so that the hydraulic motor M is connected to the low-speed circuit. The state is switched between a state driven by a and rotated at a low speed and a state driven by a high-speed circuit b and rotated at a normal rotation speed.

The switching operation of the hydraulic control circuit W is performed by operating a switch provided in a control box mounted on the body of the tractor for towing and running the lap machine A or on the frame f of the lap machine A. It is performed by control means.

Therefore, the switching between the low-speed circuit a and the high-speed circuit b provided in the hydraulic control circuit W is performed by using solenoid valves V1 and V2 as shown in FIG. The solenoid valves V1 and V2 are operated to open and close by being controlled by an electric circuit incorporated in the box, whereby the solenoid valve V1 is operated to close to open the solenoid valve V2. Then, as shown in FIG. 5, the hydraulic oil discharged from the hydraulic pump P flows through the throttle valve u to the hydraulic motor M and returns to the tank T to drive the hydraulic motor M in a low-speed circuit a. By setting both the solenoid valve V1 and the solenoid valve V2 to the open state, as shown in FIG. Back to the tank T flows to the hydraulic motor M without going through Riben u, to be switched to the hydraulic motor M at a high speed circuit b for operating at normal speed.

In the embodiment shown in FIGS. 4 to 6, the solenoid valve V1 and the solenoid valve V2
In order to facilitate the switching operation between the low-speed circuit a and the high-speed circuit b by energization, the solenoid valve V1 occupies the open position in the normal state where energization is turned off, and energization is turned on. The solenoid valve V2 is configured to move to a closed position, and the solenoid valve V2 is configured to occupy a closed position in a normal state where power is turned off and to occupy a position that is opened when power is turned on. are doing.

Further, in the above-mentioned figure, V3 cuts off and opens the flow of the hydraulic oil flowing through the hydraulic motor M via the aforementioned low-speed circuit a or high-speed circuit b on the upstream side (front side) thereof. The main solenoid valve connected to the hydraulic control circuit W as described above occupies a position where the valve is opened in the normal state where the energization is off, and discharges the hydraulic oil discharged from the hydraulic pump P to the tank T before the low-speed circuit a and the high-speed circuit b. When the energization is turned on, the valve moves to the valve closing position, and pressure oil flows through the low-speed circuit a and the high-speed circuit b.

In this manner, the turning drive of the arm 3 supporting the stretching device 2 or the bail support 1 is performed by the hydraulic motor M, and the hydraulic control circuit W thereof controls the throttle valve u.
Are provided so that the hydraulic motor M can be driven by switching between low-speed rotation and high-speed rotation of normal rotation by switching between the low-speed circuit a and the normal high-speed circuit b. If it can be electrically operated by a switch operation, when the lapping work of the roll bale R is performed during the operation of the lapping machine A, the wrapping machine A is mounted on the body of the tractor or the frame f of the lapping machine A. At the start of operation, the initial rotation of the bail support 1 or the arm 3 is rotated at a low speed at the start of operation, so that the film 21 is prevented from being broken. By returning to the high-speed rotation, the lap work is quickly performed, and shortly before the set number of turns, the low-speed rotation is resumed, Upon reaching a constant number of turns, stopping at a predetermined position to perform by projecting the lock pin is comfortably performed so without shock.

At this time, the switch provided in the control box 4 is switched if the switching between the low-speed circuit a and the high-speed circuit b provided in the hydraulic control circuit W as shown in FIGS. For example, as shown in FIG. 7, for example, a bale support 1 is mounted on a frame f that is towed by a tractor so as to be rotatable about a vertical revolving shaft 10, and the revolving shaft 10 is mounted on the frame f. The roll 20 of the stretching device 2 supported on an arm 3 which is driven by a hydraulic motor M which is supported, and which is turned by the bail support base 1 and which is formed in a columnar shape and fixed to the frame f to stand upright.
In a lapping machine A in which the film 21 fed out of the wrapping machine A is wound around the peripheral surface of a roll bale R placed via a rolling means 1a mounted on the upper surface of the bale support 1, The motor M is driven by incorporating a low-speed circuit a using a throttle valve u and a high-speed circuit b at a normal speed into a hydraulic control circuit W controlled by a control valve device V provided on a frame f. ,
A case where the control valve device V is controlled and operated by a switch mounted on a frame f or a control box 4 mounted at an appropriate position on the body of a tractor, specifically, a solenoid valve which is normally held at an open position. The solenoid of V1 is turned on to close this valve V1, and the solenoid valve V2, which is normally in the closed position, is turned on and opened, and at the same time, the main solenoid valve V3, which is kept in the open position in normal state, is opened. A switch 40 for turning on and closing the valve, and a switch for turning off the solenoid valve V2 and holding the valve open to turn on the solenoid valve V1 and opening the solenoid valve V3 at the same time to operate the solenoid valve V3 to the closed position. It is enough if there is 41 and this Control operation for switching the low speed circuit a and the high-speed circuit b described above is so performed.

In this means, at the start of the lapping operation, the switch 40 is operated to operate the arm 3 or the bail support 1 around the rotating shaft 10 at a low speed, and after a predetermined number of initial rotations are completed. When the switch 41 is operated, the rotation is shifted to the high-speed rotation. When the predetermined number of turns is reached, the switch is returned to the low-speed rotation again by operating the switch 40, and the winding at the end of the lap work is performed. 40, 41 are turned off, the main solenoid V3 is returned to the valve-open position, the supply of the pressure oil to the hydraulic motor M is cut off, and the drive is stopped. At this time, the transition from the high-speed rotation to the low-speed rotation is performed by setting the rotating arm 3 or the bail support 1 to its rotation speed. A counter device 6 for counting is assembled, and a counter switch that is activated when a predetermined number of turns is measured is incorporated into the counter device 6 for counting the number of rotations that is the number of turns for winding the film 21 around the roll bale R. By turning on the solenoid valve V2 when the counter switch is operated, the shift to the low-speed rotation is performed. Therefore, the number of turns of the film 21 with respect to the roll bale R is reduced. When the predetermined number is reached, control can be performed so as to automatically shift to low-speed rotation.

The lapping operation is terminated by shifting the rotation from the high-speed rotation to the low-speed rotation, and the rotation of the motor M is stopped upon completion of the operation, and the arm 3 or the bail support 1 is provided on the frame f. The operation of stopping at a predetermined position by the lock pin 50 protruding from the lock device 5 is also turned on when the lock pin 50 is fitted into the lock pin hole of the braking member 51 provided on the arm 3 or the bail support 1. A lock pin switch is provided, and the circuit that flows to the hydraulic motor M of the hydraulic control circuit W is shut off by the operation of the switch, so that the lock pin 50 that is operated to protrude at the end of the lapping operation is provided.
Of the hydraulic motor M is surely stopped under the condition that the impact load is small due to the low-speed rotation, and the rotation of the hydraulic motor M is controlled to stop by the low-speed rotation, so that the stop at the predetermined position is properly performed. Will be performed.

As described above, the lock pin switch provided so as to be turned on when the lock pin 50 is fitted therein is provided for turning the bail support base 1 when the switch is turned off. The solenoid valve that controls the hydraulic circuit of the hydraulically operated dump cylinder is de-energized, and can be connected to the solenoid valve's electric circuit so that when turned on, the solenoid valve can be energized. If the turning operation of the bail support 1 is not properly stopped at a predetermined position,
Therefore, when the lock pin 50 is not fitted into the lock pin hole, the hydraulic circuit of the dump cylinder does not open, so that the dump operation of the bail support base 1 is not performed. It can be used as a stabilizer for preventing an accident caused by dumping the stopped bale support 1 in an unstable state.

FIG. 8 shows an example of an electric circuit diagram for controlling in this way. In FIG. 8, SW1 is a switch for switching a hydraulic circuit provided in the control box 4, swL is a switching contact for a low-speed circuit, and 70 is its contact s.
S1 is a solenoid of the solenoid valve V1 in FIG. 4 connected to the low-speed control circuit 70, swH is a switching contact for a high-speed circuit, 71 is a high-speed control circuit connected to the contact swH, S2 4 is a solenoid of the solenoid valve V2 shown in FIG. 4 connected to the high-speed control circuit 71, 72 is a self-holding circuit which is self-held when a relay 73 connected to the high-speed control circuit 71 is turned on, and SW2 is a control box. 4 is a dump switch, 80 is a contact on the dump rotation side, 81 is a control circuit on the dump rotation side connected to the contact 80, and S4 is a solenoid for opening and closing a hydraulic circuit for dump rotation connected to the control circuit. The solenoid of the valve, 82 is a contact on the dump return side, 83 is a control circuit on the dump return side connected to the contact 82, S5 Solenoid of the solenoid valve for opening and closing the hydraulic circuit for return dump connected to the control circuit 83, SW3 counter device provided to the frame f to count the number of rotations of the arm 3 or bale bearing blocks 1 6
Is a counter switch which is turned on when a predetermined number of turns (number of rotations) are counted, and a lock pin SW4 which is turned on when a lock pin 50 of a lock device 5 provided on the frame f is fitted into a lock pin hole. Switch.

Reference numeral 74 denotes a connection circuit connected so that current flows toward the high-speed control circuit 71 in the middle of the low-speed control circuit 70. Reference numeral 7a denotes a solenoid that controls the main solenoid valve V3 of the hydraulic control circuit W shown in FIG. V3 is a control circuit. The control circuit 7a includes a high-speed control circuit 7
1 and the dump rotation control circuit 81 and the dump return control circuit 83 are connected to each other via connection circuits 75, 76, and 77, respectively, so that they are closed by current flowing.

The switch SW1 for switching the hydraulic circuit described above.
When the switch piece 7 is tilted to the pushing side, the switch piece 7
The switch piece 7 comes into contact with the contact swH of the high-speed control circuit 71 by contacting the contact swL with the contact swL of 0, and the switch piece 7 comes into contact with the contact swL and the contact swH by releasing the operation.
And return to a neutral position in between.

The above-mentioned counter switch SW3 is
The high-speed control circuit 71 and the low-speed control circuit 70 are provided upstream of the solenoids S1 and S2 to connect the high-speed control circuit 71 and the low-speed control circuit 70. When the counter switch SW3 is turned on, the solenoid S1 is turned on and the solenoid valve V1 is opened. It operates so that the hydraulic circuit is switched to the low-speed circuit a passing through the throttle valve u.

The lock pin switch SW4 is connected to the self-holding circuit 72 so as to open the self-holding circuit 72 when turned on, and is closed by the self-holding circuit 72 when turned on. The low-speed control circuit 70 flowing through the solenoid S1 is turned off to stop the hydraulic motor M.

The lock pin switch SW4
Is connected to the control circuit 81 for turning the dump so that the contact 84 is turned to the ground contact of the control circuit 81 for turning the dump.
4 is in an off state, the self-holding circuit 72 is held in a closed state.
With respect to 1, the bale support base 1 is prevented from rotating even when the dump switch SW <b> 2 is operated to operate the dump switch SW <b> 2 while holding it open.

According to this circuit configuration, if the switch SW1 for switching the hydraulic circuit is pushed down and its switch piece 7 is brought into contact with the contact swL of the low-speed control circuit 70, the low-speed control circuit 70 is closed. The solenoid S1 connected thereto is turned on, the solenoid valve V1 shown in FIG. 4 is closed, and the low-speed circuit a through which the pressure oil flows through the throttle valve u is opened. When current flows through the high-speed control circuit 71 by the
The solenoid S2 is turned on to open the solenoid valve V2 shown in FIG. 4, and the solenoid S3 is turned on by the connection circuit 75 to close the main solenoid valve V3 and discharge from the pump P. The pressure oil flows through the hydraulic motor M in the low-speed circuit a via the throttle valve u, and rotates the motor M at a low speed.

At the same time, a current flows to the high-speed control circuit 71 by the connection circuit 74, whereby the self-holding circuit 72 is established.

Therefore, while the switch SW1 is kept pressed, this state is maintained and the hydraulic motor M is kept rotating at a low speed.

Next, when the operation of the switch SW1 is released, the switch SW1 enters the neutral state, the low-speed control circuit 70 is turned off, and the high-speed control circuit 71 and the main solenoid valve V3 are switched by the established self-holding circuit 72. By turning on the control circuit 7a of the solenoid S3, the solenoid valve V2 is opened, the solenoid valve V3 is closed and the solenoid valve V1 is opened in FIG. The circuit shown in FIG. 5 is switched to a state where the hydraulic motor M rotates at a high speed.

Therefore, by releasing the switch SW1 when the initial rotation of the lap work by the low-speed rotation is completed,
The rotation is automatically switched to the high-speed rotation, and the lapping operation is promptly performed, and this state is maintained.

Next, the number of windings of the film around the peripheral surface of the roll bale R becomes a predetermined number, which is measured by the counter device 6 and when the counter switch SW3 is operated, the low-speed control circuit is operated by the switch SW3. 7
0 is closed. As a result, the solenoid S1 is turned on to close the solenoid valve V1 in FIG. 4, and the hydraulic oil discharged from the hydraulic pump P drives the hydraulic motor M in the low-speed circuit a via the throttle valve u. The state is switched to a state in which the hydraulic motor M is rotated at a low speed.

Therefore, at the end of the lapping operation, the counter device 6 measures the predetermined number of turns, thereby automatically switching the state in which the rotation of the arm 3 or the bale support 1 is performed at a low speed.

At this time, the lock device 5 is allowed to protrude the lock pin 50 in conjunction with and linked to the operation when the counter device 6 has counted the predetermined number of times. At the end of the lapping operation, the switching from the high-speed rotation to the low-speed rotation automatically performed by the operation of the counter device 6 causes the arm 3 or the bale support 1 to rotate slowly, whereby the arm 3 or the bale support 1 is rotated. When the lock pin hole of the braking member 51 mounted on the first lock member rotates to a position corresponding to the lock pin 50, the lock pin 50 is fitted into the lock pin hole without generating a great impact. Can be combined. When the lock pin 50 is fitted, the lock pin switch SW4 is turned on, whereby the self-holding circuit 72 is turned off, and the solenoids S1, S2, S
Then, the main solenoid valve V3 is opened and the hydraulic motor M is stopped.

Therefore, the turning operation of the arm 3 or the bail support 1 at the predetermined stop position by the lock pin 50 when the lapping operation is completed can be performed accurately without a great impact. To

Next, when the film 21 is wound around the roll bale R mounted on the bale support 1 and wrapped, the counter device 6 for counting the number of turns of the film 21 and when the wrapping operation is completed, An example in which the lock device 5 for stopping the arm 3 or the bail support 1 at a predetermined position is applied to a lapping machine A in which the bail support 1 is turned by a turning shaft 10 will be specifically described.

FIG. 9 shows a counter device 6 and a lock device 5.
Plan view, partially broken away, of a lapping machine A equipped with
0 is a side view of the same, FIG. 11 is a rear elevational view of the same, and in these figures, f is a frame, 1 is a bail support that is supported on the frame by a vertical turning shaft 10 so as to be freely rotatable, and M is a swivel. A hydraulic motor 11 mounted on a frame f to drive the shaft 10;
0, a pair of rollers 12 mounted on the upper surface of the bale support 1;
12 and a hydraulic motor (not shown) for driving the same, and an endless belt 1 wrapped around the rollers 12
3. Rolling means consisting of 3; R indicated by an imaginary line is a roll bale mounted on the upper surface of the rolling means 1a; 3 is an arm formed in a columnar shape and fixedly provided upright on one side of the front end side of the frame f. ,
Reference numeral 2 denotes a stretching device supported on the arm 3, reference numeral 20 denotes a film roll loaded therein, and reference numeral 21 denotes a film fed from the roll 20.

In FIG. 11, f 'denotes a dump frame which is supported on the frame f so as to be vertically rotatable around the support shaft 14 in order to rotate the bale support 1 by dumping. Is rotatably supported on the dump frame f ′ via a pivot shaft 10. A dump cylinder 15 that expands and contracts by hydraulic operation is bridged between the dump frame f ′ and the frame f. However, dump rotation is performed in a state shown by an imaginary line in FIG.

In FIG. 11, reference numeral 16 denotes a side of the front end side of the bale support 1, which is located near the arm 3 on which the stretching device 2 is supported, and which is mounted on the side surface of the bale support 1. And cutter.

As shown in FIGS. 12 to 14 and FIGS. 15 to 17, the lock device 5 is arranged on the lower surface side of the bail support 1 which turns around the turning shaft 10, and the dump frame f '. A vertical guide cylinder 53 fixedly supported on a mounting machine frame 52 fixedly connected to the main body, a lock pin 50 slidably inserted into the guide cylinder 53 in a vertical direction, and a horizontal direction provided on the aforementioned mounting machine frame 52. Is pivotally supported by a fulcrum pin 540 so as to be swingable and rotatable.
A push-up metal fitting 54 connected to the lower end side of the lock pin 50 through the push-in fitting 41, and the connecting pin 54
1 and a spring 55 that urges the lock pin 50 to the ascending side by urging the link side with the lock pin 50 in the direction of pushing up, and a shaft that pivots around the pivot shaft 10 to the dump frame f ′. A brake member 51 attached to the bottom surface of the bail support 1 to be integrally connected to the bail support 1, a lock pin hole 510 opened to fit the lock pin 50 into the brake member 51, and the push-up. The engaging rod 542 provided at the other end of the metal fitting 54 is
17, when the side connected to the lock pin 50 is lowered as shown by a solid line in FIG. 17, the engaging rod is pulled out as shown in FIG. 54
2 so that the frame f is locked in the raised position.
The fulcrum pin 56 is fixed to the underframe 90 fixed and assembled
And a lock fitting 56 that can be supported through the “0”.

The lock fitting 56 is rotated clockwise in FIG. 19 around the fulcrum pin 560 by the operation of the actuator 58 connected thereto via the connecting rod 57, as shown in FIG. When the push-up fitting 54 pushes the lock pin 50 up by the bias of the spring 55 by releasing the engagement with the connecting rod 542,
The lock pin holes 510 provided in the braking member 51 attached to the lower surface of the bail support 1 that rotates about the center 0 are sequentially displaced around the center of the turning shaft 10 and come to positions corresponding to the lock pins 50. The lock pin 50 pushed up by the bias of the spring 55 is inserted into the lock pin hole 51.
As shown by the chain line in FIG. 16, the bale support 1 is stopped from rotating.

Lock pin switch SW4 which is turned on when lock pin 50 is fitted in lock pin hole 510.
As shown in FIGS. 16 and 17, the switch body 590 is assembled to a bracket 591 provided on the mounting machine frame 52 that supports the guide cylinder 53 described above.
When the switch piece 592 is attached to the push-up metal fitting 54 and the push-up metal fitting 54 is at the solid line position in FIG. 17, the switch piece 592 is at a position separated downward from the switch main body 590, and the push-up metal fitting 54 is rotated by the bias of the spring 55. With lock pin 50
When the lock pin 50 has been fitted into the lock pin hole 510, the lock pin switch SW4 is turned on by coming into contact with the switch body 590 as shown by a chain line in FIG. .

As shown in FIG. 15, the counter device 6 has a support shaft 60 inside a flat box-shaped casing 9 mounted and supported on the upper surface of the underframe 90 as shown in FIGS.
Semicircular ratchet tooth plate 6 pivotally supported to rotate about the center
1 and an angle-shaped count arm 62 which is positioned so as to wrap on the upper surface thereof and rotates about the support shaft 60.
And a spring 631 which is rotatably supported on the upper surface of one of the arm portions 62a of the count arm 62 around the connection pin 630 and is stretched between the arm 62 and the engagement teeth 632 on the rotation end side. And a feed pin 63 for urging the ratchet teeth 610... Of the outer edge of the ratchet tooth plate 61 to engage with the ratchet teeth plate 610.
A spring 641 which is rotatably supported at the center of the center 40 and is stretched between the bottom plate 91 and the meshing teeth 642 on the rotating end side has ratchet teeth 610 on the outer edge of the ratchet tooth plate 61 described above.
A return preventing bracket 64 biased so as to mesh with the bale support 1 pivoted by the pivot 10 as shown in FIG. The pivot arm 10 is mounted so as to rotate around the center of the pivot shaft 10, and by this rotation, the arc-shaped cam portion 650 provided at the rotating end in plan view as shown in FIGS. The count arm 62 is rotated while being in contact with a roller 620 provided on the upper surface of the other arm portion 62b, and the feeder 63 is moved to the ratchet tooth plate 61.
Ratchet teeth 610...
A count adjustment hole 66 provided in the upper plate 9a of the casing 9 in parallel with the series, a stopper pin 67 that can be freely inserted into and removed from a desired count adjustment hole 66 selected from them, and a bail support. When the base 1 rotates by a predetermined number of rotations and the ratchet tooth plate 61 rotates by an amount corresponding to the rotation, the ratchet tooth plate 61 is brought into contact with the actuator 58 of the locking device 5 to operate it. 61 and an abutting portion 611 formed in FIG.
As shown in FIG. 8 and FIG. 19, a reset van 68 is disposed between the ratchet tooth plate 61 and the count arm 62 and rotatably supported on the support shaft 60.

Then, as shown in FIG.
When the ratchet tooth plate 61 is pulled by the spring 69 connected to the ratchet tooth plate 61, the ratchet tooth plate 61 is rotated to a position where it hits the stopper pin 67 set in the selected count adjustment hole 66, and a predetermined number of turns (the number of turns of the bail support 1) is set. 22 to 25, the ratchet tooth plate 61 as shown in FIGS.
Is rotated by one tooth for each rotation of the bale support 1, and when the number of turns reaches the set number of times, the measurement is finished. At that time, the abutment part 611 of the ratchet tooth plate 61 is moved to the actuator 58. Abutting and pushing it out, the spindle 58
The counter switch SW3, which is rotated around the center of 0 and interlocked with the operation of the actuator 58, is turned on.

The counter switch SW3 is connected to the operating section 9
The switch 93 is turned off when the button 2 is pushed in, and turned on when the button 2 is released. The body 93 is assembled to the underframe 90 by a bracket 94. A pushing platen 95 for pushing the operating portion 92 to turn it off is provided with a lever 562 integrally connected to the lock fitting 56 supported on the underframe 90 so as to rotate about the fulcrum pin 560. 1 and the lock fitting 56 is pulled by the spring 561, and FIG.
8, the operation unit 92 is pushed in to hold the counter switch SW3 in the OFF state, the counter device 6 measures a predetermined number of turns, and the ratchet tooth plate 61 When the actuator 58 is tilted and rotated as shown in FIG. 19, the lock fitting 56 connected via the connecting rod 57 rotates clockwise around the fulcrum pin 560 in FIG. The board 95 moves downward,
Release the pushing of the operation unit 92 and release the counter switch S
W3 is turned on. When the counter device 6 measures a predetermined number of turns, the counter switch SW3 is turned on to operate the hydraulic motor M3.
Is switched to a state of rotating at a low speed.

Then, by the rotation of the lock fitting 56 due to the operation of pressing the actuator 58 performed at this time, the engaging rod 542 of the push-up fitting 54 of the lock device 5 causes the lock fitting 5
6, the lock pin 50 rises, and is turned into the lock pin hole 510 provided in the bail support 1 which is controlled to rotate at a low speed by the ON operation of the counter switch SW3 and performs a slow turning operation. Then, the lock pin 50 is fitted without shock to stop the bail support 1, and at the same time, the lock switch SW4 is turned on, thereby stopping the hydraulic motor M and terminating the lapping operation.

Next, from this state, the bale support 1 is dumped and rotated, the roll bale R which has been wrapped is released, and the bale support 1 is returned and rotated. When the plate 61 is reset, the engaging rod 542 of the push-up metal fitting 54 engages with the engaging step of the lock fitting 56 restored to the upright posture,
The push-up metal fitting 54 is rotated against the bias of the spring 55 and reset to the position where the lock pin 50 is retracted.

[0049]

As described above, in the lapping machine according to the present invention, the arm or the bail support for rotating the film 21 fed from the stretching device around the roll bale is discharged from the hydraulic pump. The rotation of the hydraulic motor M is controlled by a low-speed circuit a in which a throttle valve u is connected to a control valve of the hydraulic circuit, and a normal high-speed circuit b without the throttle valve u. With
These switching is performed by controlling the solenoid valve by an electric signal by operating a switch provided in the control box, so that when a roll bale is mounted on a bale support and lapping work is performed. In the early stage of the lapping operation, the arm or bail support base is rotated at a slow speed by an electric signal generated by a switch operation so that the film is not broken. Because the lap work is performed and the speed is returned to the slow speed again at the end of the lap work, the stop by the lock pin can be performed without a big shock,
The wrapping operation of the roll bale does not cause tearing of the film and prevents the device from being damaged by a shock, so that the arm or the bale support can be stopped at a predetermined position.

The solenoid valve V1 which closes the control valve of the hydraulic circuit when power is turned on to form a low-speed circuit a through the throttle valve u and opens when the power is turned off and does not pass through the throttle valve u. A solenoid valve V1 forming a high-speed circuit b and a hydraulic circuit for the low-speed circuit a and the high-speed circuit b are opened by turning on the energization, and closed by turning off the energization. A solenoid valve V3 for shutting off a hydraulic circuit for the solenoid valve, and a low-speed control circuit 70 for turning on the solenoid valve V1 by turning on a switch SW1 is closed in an electric circuit for controlling the solenoid valve V3. A self-holding circuit 72 for holding the high-speed control circuit 71 for turning on the valve V2 in a closed state; 2, when to be configured to continue to hold even in a state where the neutral release the switch SW1 at the start of the lap work, the switch SW1
When the hydraulic motor M is rotated at a low speed by the operation described above, a predetermined initial rotation is performed.
To automatically release the arm 3 or bale support 1
Is switched to a high-speed rotation state, so that the lapping work can be performed easily.

The lapping machine is provided with a counter device 6 for measuring the number of rotations of the arm 3 or the bail support 1, and a counter switch SW3 which is turned on when it has counted a predetermined number of turns. Is connected to the above-mentioned electric circuit so as to close the low-speed control circuit 70 by the on operation thereof, so that the initial rotation is performed at a low speed by the pushing operation of the switch SW1, as described above, When the switch SW1 is released, the arm 3 automatically switches to the normal high-speed rotation and rotates.
Alternatively, when the bale support 1 reaches a predetermined number of turns and the counter device 6 measures it, the counter switch S
The operation of W3 automatically switches to low-speed rotation, so that lapping work is further facilitated.

The counter device 6 is connected to the frame f
The number of windings can be set by juxtaposing the count adjustment hole by mounting the bale support 1 on the lower surface side of the bale support 1 so as to be exposed by rotating the bale. It is possible to easily set the number of turns when the stopper pins 67 are selected and replaced with respect to 66.

Further, a lock pin switch SW4 is provided which is turned on when the lock pin 50 for stopping the rotation of the bail support 1 is fitted into the lock pin hole 510 when the lapping operation is completed. When the switch SW4 is turned off, the circuit of the solenoid S4 of the solenoid valve for controlling the hydraulic circuit of the dump cylinder 15 for rotating the bail support 1 is opened when the switch SW4 is turned off, and closed when the switch SW4 is turned on. In this way, it is possible to prevent the rotation of the dump when the bail support 1 is stopped at a position other than the predetermined position, thereby preventing an accident due to the rotation of the dump in an incorrect posture. .

[Brief description of the drawings]

FIG. 1 is a side view of a lap machine of a type in which a conventional arm rotates.

FIG. 2 is a side view of a lapping machine of a type in which a conventional bail supporter rotates.

FIG. 3 is a rear view of the same.

FIG. 4 is a hydraulic circuit diagram of the lapping machine according to the present invention.

FIG. 5 is an explanatory diagram of a state where the hydraulic circuit has been switched to a low-speed circuit.

FIG. 6 is an explanatory diagram of a state where the hydraulic circuit has been switched to a high-speed circuit.

FIG. 7 is a side view of a wrapping machine for implementing the means of the present invention.

8 is an electric circuit diagram for controlling the operation of the solenoid valve of the hydraulic circuit of FIG.

FIG. 9 is a partially cutaway plan view of the entire lap machine controlled by the electric circuit according to the first embodiment;

FIG. 10 is an overall side view of the lapping machine.

FIG. 11 is a rear view of the whole lap machine.

FIG. 12 is a partially broken plan view showing a state in which a bale support of a main part of the lapping machine is turned by a predetermined angle.

FIG. 13 is a partially broken plan view showing a state in which a bale support of a main part of the lapping machine has turned to a predetermined position.

FIG. 14 is a side view of a main part of the lap machine.

FIG. 15 is a plan view of a lock device and a counter device of the lapping machine.

FIG. 16 is a plan view of a lock device of the above.

FIG. 17 is a side view of the lock device of the above.

FIG. 18 is a side view of a lock device and a counter device of the above.

FIG. 19 is a side view showing a state where the counter device in the above-mentioned portion has completed a predetermined number of measurements.

FIG. 20 is a side view showing an arrangement position of the counter device part and the bale support table in the above.

FIG. 21 is a plan view of the above counter device at the start of counting.

FIG. 22 is a plan view when the count arm of the counter device is rotating the ratchet tooth plate.

FIG. 23 is a plan view showing a state where the cam portion of the cam of the counter device is separated from the count arm and the count arm is restored.

FIG. 24 is a plan view when the number of measurements by the counter device is intermediate.

FIG. 25 is a plan view showing a state where the counter device has measured a predetermined number of turns.

FIG. 26 is an explanatory diagram showing a position of a reset van when the counter device of the above is performing a counting operation.

FIG. 27 is an explanatory diagram of an operation in a state where the reset van is rotated and the meshing teeth are raised from the ratchet teeth of the ratchet tooth plate when the counter device has counted a predetermined number of turns.

FIG. 28 is an explanatory diagram of a state where the ratchet tooth plate has been reset by a reset van of the counter device.

[Explanation of symbols]

A: lap machine, M: hydraulic motor, R: roll bale, T: tank, P: hydraulic pump, W: hydraulic control circuit,
a: low speed circuit, b: high speed circuit, f: frame, f ': dump frame, u: throttle valve, S1, S2, S3, S4,
S5: solenoid, SW1: switch, SW2: dump switch, SW3: counter switch, SW4: lock pin switch, swL: switching contact for low-speed circuit, swH
... Switching contacts for high-speed circuits, V ... Control valve devices, V1, V2, V3 ... Solenoid valves, 1 ... Bale bearings, 1a ... Rolling means, 10 ... Rotating shaft, 11 ... Transmission mechanism, 12 ... Rollers, 13 ... belt, 14 ... support shaft, 15
... Dump cylinder, 16 ... Cutting device (tie and cutter), 2 ... Stretching device, 20 ... Roll, 21 ... Film, 3 ... Arm, 4 ... Control box, 40 ・
41: switch, 5: locking device, 50: lock pin,
51: braking member, 510: lock pin hole, 52: mounting machine frame, 53: guide cylinder, 54: push-up metal fitting, 540: fulcrum pin, 541: connecting pin, 542: engaging rod, 55: spring,
56: lock fitting, 560: fulcrum pin, 561: spring,
562 lever lever, 57 connecting rod, 58 actuator, 580 support shaft, 590 switch body, 591
Bracket, 592: switch piece, 6: counter device,
6a: control circuit, 60: support shaft, 610: ratchet teeth,
Reference numeral 61: ratchet tooth plate, 611: abutting portion, 62: count arm, 62a: arm portion, 62b: other arm portion, 620: roller, 63: feeder, 630: connecting pin, 631: spring, 632: meshing Tooth, 64: Return prevention metal fitting, 641: Spring, 642: Meshing tooth, 65: Cam, 6
50 cam part, 66 count adjustment hole, 67 stopper pin, 68 reset ban, 69 spring, 7 operating piece, 7a control circuit, 70 low speed control circuit, 71 high speed control circuit, 72 self Holding circuit, 73 ... relay, 74
75, 76, 77: connection circuit, 80: contact on dump rotation side, 81: control circuit, 82: contact on dump return side, 83
... Dump return side control circuit, 84 contact, 9 casing, 9 a top plate, 90 underframe, 91 bottom plate, 92 operating part, 93 body, 94 bracket, 95 press platen.

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 2B100 AA06 CC01 JA01 3E051 AA03 AB05 AB09 BA03 EA01 FA01 FA04 FA05 FA06 FA07 LA04 LA08 LB04

Claims (5)

[Claims] An arm or a bail support for rotating a roll bale so as to wind a film 21 fed from a stretching device around the roll bale is driven by a motor M operated by pressurized oil discharged from a hydraulic pump. The hydraulic circuit of the motor M is provided with a low-speed circuit a to which a throttle valve u is connected and a normal high-speed circuit b which does not pass through the throttle valve u, and these circuits are switched by a solenoid operated by a switch provided in a control box. A lapping machine characterized by controlling a valve. 2. A hydraulic circuit of a hydraulic motor M for rotating and driving the arm 3 or the bail support base 1 which turns so as to wind the film 21 unwound from the stretching device 2 around the roll bale R, closes the valve by turning on the power supply and throttles the valve. A solenoid valve V1 that forms a low-speed circuit a via a valve u, a solenoid valve V1 that opens when the energization is turned off and forms a high-speed circuit b that does not pass through the throttle valve u, The hydraulic circuit for the circuit a and the high-speed circuit b is opened, and the valve is closed by turning off the power supply.
And a solenoid valve V3 for shutting off a hydraulic circuit for the high-speed circuit b, and an electric circuit for controlling them,
A low-speed control circuit 70 that is closed by connecting the switch SW1 to the switching contact swL for the low-speed circuit and turns on the solenoid valve V1 to close it, and a connection that turns on and opens the solenoid valve V2 by closing the circuit 70 A circuit 74 for turning on the solenoid valve V3 and closing the solenoid valve V3; and a self-holding circuit 72 for holding the solenoid valve V2 and the solenoid valve V3 in the ON state. The lapping machine is characterized in that the circuit 72 is configured to maintain the established state of closing the solenoid valve V3 when the switch SW1 is released to the neutral position. 3. A counter device 6 for measuring the number of revolutions of the arm 3 or the bail support 1 is mounted on a frame f of the lapping machine A, and a counter switch SW3 which is turned on when a predetermined number of turns is measured thereupon. Wherein the switch SW3 is connected to an electric circuit for controlling the solenoid valves V1, V2, V3 such that the solenoid valve V1 is closed when the counter device 6 is turned on by the measurement operation. Item 4. The wrapping machine according to item 2. 4. A counter device 6 for supporting a bale support 1 on the upper surface side of a frame f of a lapping machine A so as to be able to rotate the dump to the side, and measuring the rotation speed of the bale support 1.
Wrapping machine is mounted on a frame f at a position exposed on a lower surface side of the bale support 1 by a dump rotation to the side of the bale support 1. 5. A bale support 1 is mounted on a frame f of a lapping machine A so that it can be dumped and rotated by a hydraulically operated dump cylinder 15, and a lock pin 5 that comes in and out.
0 and the bail support 1
A lock device 5 for stopping the turning operation of the lock at a predetermined position is provided, and a switch SW4 that is turned on when the lock pin 50 and the lock pin hole 510 are fitted to the lock device 5 is mounted.
And set the switch SW4 to the dump cylinder 1
5 is used to control the solenoid valve for switching the hydraulic circuit between the dump rotation side and the dump return side, and to the electric circuit for controlling the solenoid valve for switching the hydraulic circuit of the dump cylinder 15 to the dump rotation side by turning on the switch SW4. A lapping machine characterized by being connected so as to close a circuit.