JPH0246455B2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to an unpacking device that cuts and removes the wrapping paper of a package such as a pulp bale without using manual labor to improve unpacking processing efficiency. The present invention relates to a detection device that is provided to detect the wrapping paper fastening wire.

"Prior Art" Generally, in paper manufacturing plants that do not have pulp manufacturing equipment, sheet-like pulp transported from the pulp manufacturing plant is disintegrated by a pulper and then used as a raw material.

As shown in FIG. 10, the sheet-like pulp is transported as a so-called pulp bale 1 wrapped in wrapping paper 1a and 1b from above and below and tied vertically in a criss-cross pattern with wires 1c. Since the pulp is stored, when this pulp is fed into a pulper and disintegrated, it is necessary to manually remove the wire 1c of the pulp bale 1 and the wrapping papers 1a and 1b. has been done.

By the way, in recent years, the scale of paper manufacturing plants has increased significantly, and in order to efficiently supply large amounts of pulp raw materials, it is necessary to automatically perform the pulp unpacking process described above without manual intervention. There is a request to do so. In order to meet this demand, methods and devices for unpacking pulp have been proposed in Japanese Patent Application No. 57-9752 and the like.

That is, as shown in FIG. 11, this unpacking device aligns the pulp bale 1 being conveyed by the roller conveyor 2 in the width direction of the roller conveyor 2 using the centering device 3, and then cuts the pulp bale 1 by wire cutting. The wire 1c is cut by the machine 4, and the cut wire 1c is pulled out and removed by the wire removing machine 5, and one suction machine 6 is provided movably in a direction intersecting the roller conveyor 2.
A, the upper wrapping paper 1a is lifted and removed while applying vacuum pressure, and the pulp bale 1 is reversed by the reversing machine 7 provided so as to surround the roller conveyor 2, and the lower wrapping paper is removed. The unpacking operation is performed by turning the wrapping paper 1b upward, and then causing the second suction device 6B provided on the downstream side of the reversing machine 7 to adsorb and remove the lower wrapping paper 1b.

By the way, in order to cut the wire 1c with the wire cutter 4 and pull out the cut wire 1c with the wire puller 5, the wire cutter 4 and the wire remover 5 are made to accurately grasp the position of the wire 1c. There is a need.

Detection of such a wire is carried out, for example, by moving a metal detection means such as a magnetic sensor along the side surface of the pulp bale 1. If it is inclined with respect to the moving direction of the magnetic sensor, the metal detecting means may come into contact with the side surface of the pulp bale, making it difficult to move.

"Problems to be Solved by the Invention" The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a detector that can reliably detect packaging wire regardless of the posture of the pulp bale. It is.

"Means for Solving the Problems" In order to achieve the above object, the present invention has a main body frame that is movable in the direction toward and away from the side surface of the pulp bale, and is mounted on a main body frame that is movable in the same direction as the frame. A plurality of contact plate support shafts are provided to support the contact plate, a sensor for wire detection is provided on the contact plate, and a sensor is provided for detecting the relative position of the contact plate support shaft and the main body frame. The contact pressure between the contact plate, that is, the wire detection sensor, and the pulp veil is kept constant by moving the main body frame according to the detection result of the sensor.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 9.

First, the overall layout of the pulp unpacking device will be explained with reference to FIG.
This device has the same basic structure as the pulp unpacking device described in Japanese Patent Application No. 156664 or Japanese Patent Application No. 156665/1982, and is installed in the middle of the roller conveyor 2 so as to be movable up and down to horizontally move the pulp 2. A pulp turner 8 to be rotated, a wire cutting machine 4A installed on one side of the pulp turner 8 to cut the wire, and a wire removing machine 5A installed at a position facing the wire cutting machine 4A to pull out the wire. ,
These wire cutting machines 4A and wire removing machines 5A
a reversing machine 7A that is provided on the downstream side of the pulp 1 and vertically rotates the pulp 1; and a packaging that is provided at a position facing the reversing machine 7A and that rotates above the inverted pulp to adsorb the wrapping paper. Paper removal machine 9
The wire detection device of the present application is provided in the wire cutting machine 4A and the wire removing machine 5A.

Next, each of the above components will be explained in detail.

As shown in FIGS. 2 to 4, the wire cutting machine 4A moves along rails 10, 10 arranged parallel to the running direction of the roller conveyor 2 (hereinafter referred to as the X-axis direction). frame 11
A cutting head 12 is provided at the roller conveyor 2, and the cutting head 12 is moved horizontally in a direction perpendicular to the roller conveyor 2 (hereinafter referred to as the Y-axis direction).

The cutting head 12 has a contact plate 14 attached to the tips of a pair of support shafts 13 that can move forward and backward in the Y-axis direction.
and a magnetic sensor 1 attached to the contact plate 14.
5, 15, and a cutter 17 that moves forward and backward in the Y-axis direction through an opening 16 provided in the contact plate 14,
18, and the cutters 17, 18
The wires are cut by rotating the wires so as to cross each other. Further, the contact plate 14 is supported at both ends in the width direction by the support shafts 13, 13, and is supported by support pins 19, 19 so as to be freely pivotable in a vertical plane. By adopting this method, the angle can be changed according to the posture of the pulp or the unevenness of the side surface of the pulp. In addition, the code 20 in the figure is the cutter 1.
Hydraulic cylinder actuating 7, 18, number 2
1 is a motor that drives the moving frame 11 in the X-axis direction, and 22 is the main frame 1 of the cutting head 12.
This is a motor that moves 2a (a frame that supports the cutters 17 and 18 and moves together with them) on the moving frame 11 in the Y-axis direction.

Furthermore, the wire cutting machine 4A includes a contact plate 1.
A control mechanism is provided to maintain the contact pressure between the pulp veil 4 and the pulp veil 1 at an appropriate value.

That is, as shown in FIGS. 5 and 6, the support shaft 13 is axially movably supported by a support arm 12b provided on the main body frame 12a of the cutting head 12, and is supported by a compression spring 13a. Therefore, it is biased in the direction of approaching the roller conveyor 2. Further, the main body frame 12a is provided with head position detection sensors L ₁ , L ₂ made of limit switches, etc., spaced apart from each other in the axial direction of the support shaft ₁₃ . _L2 is pressed and activated by the movement of the support shaft 13 in the Y-axis direction (the axial direction of the support shaft 13), and determines whether the position of the magnetic sensor 15 is appropriate depending on the operating state of these detection sensors. A determination is made as to whether or not the cutting head 1
2 forward and backward operations are performed.

The wire removing machine 5A is comprised of a guide frame 23 and a main frame 24, as shown in FIGS. 7 to 9.

The guide frame 23 is supported movably in the X-axis direction by guide rails 25, 25 provided above and below, and its movement in the vertical direction is restricted, and serves as a fixed side for guiding the wire pulled out from the pulp. It has guide rolls 26A, 26A and movable guide rolls 26B, 26B that can move up and down, and these guide rolls 26A,
Guide plate 2 having a sliding surface for guiding and centering the wire in the widthwise center part of 26B
7, and further includes a brake device 28 that restricts movement in the X-axis direction, and a brake release mechanism 29 that operates the brake device 28.

The main frame 24 is mounted on rails 30, 30 provided along the Y-axis direction,
Furthermore, rails 31, 31 are mounted on the main frame 24 along the X-axis direction. and,
A moving frame 33 having a pull-out head 32 is mounted so as to be movable along the rails 31, 31.

The drawing head 32 includes a clamp 34 for gripping the wire and a contact plate 14 configured similarly to the contact plate 14 of the wire cutting machine 4A. It is supported by the tips of the support shafts 13, 13 so as to be movable forward and backward in the Y-axis direction, and also supported by pins 19, 19 so as to be freely pivotable.

Further, the clamp 34 is provided in an inclined state as shown in FIG. 7 in order to prevent the wire from getting caught when the wire is pulled out.

Furthermore, an actuation rod 35 is provided protruding from the front part of the movable frame 33.
By moving the main frame 24 forward in the Y-axis direction (moving toward the roller conveyor 2), the swing arm 29a connected to the brake release mechanism 29 is pressed, and the brake of the guide frame 23 is released. Release. In addition, the actuating rod 3
5 engages with a part of the guide frame 23 to connect the guide frame 23 and the main frame 24, allowing them to move together in the X-axis direction.

In addition, in FIGS. 7 to 9, the reference numeral 36
37 is a motor that moves the main frame 24 in the Y-axis direction, 37 is a motor that moves the moving frame 33 in the X-axis direction, and 38 is a motor that moves the main frame 32a of the extraction head 32 (the frame that moves together with the clamp 34) on the Y-axis. A motor 39 is a drive device for operating the clamp 33. Further, the drawing head 32 of the wire drawing machine 5A is also provided with a position detection sensor (not shown) in the same way as the cutting head 12, and the motor 38 is controlled according to the operating state of the sensor. Regardless of the posture of the pulp veil 1, the contact pressure between the contact plate 14 and the pulp veil 1 is maintained constant.

On the other hand, the reversing machine 7A installed on the downstream side of the wire cutting machine 4A and the wire pulling machine 5A has two upper and lower forks 43 installed on a revolving frame 42 that is vertically rotated around a shaft 41 by a motor 40 ( Note that the lower fork is not shown),
The forks 43 rotate the pulp while holding it from above and below. Furthermore, the fork 43 is retracted to a position above the operating range of the wrapping paper removing machine 9.

Further, the wrapping paper removing machine 9 has four or a plurality of suction devices 44 mounted on a revolving frame 45, and removes the first one while applying vacuum pressure to the wrapping paper from these suction devices 44. The wrapping paper covering the upper part of the pulp can be absorbed and removed by horizontally rotating the pulp to the position shown by the solid line or the chain line.

Next, the operation of the unpacking device configured as above will be explained.

(i) The pulp bale 1 is conveyed in the X-axis direction by the roller conveyor 2, and is positioned at the center in the width direction of the roller conveyor 2 by a centering device (not shown), and the roller conveyor 2 is stopped. The pulp bale 1 is positioned above the pulp turner 8.

(ii) When the motor 22 is operated and the cutting head 12 of the wire cutting machine 4A approaches the side surface of the pulp bale 1, the contact plate 14 comes into contact with the pulp bale 1, and then, integrally with this contact plate 14, The support shaft 13 moves in the Y-axis direction (rightward in FIG. 6), and the head position detection sensor _L1 detects the support shaft 13.
When the contact plate 14 (that is, the magnetic sensor 15) is pressed to the end thereof, it is determined that the contact plate 14 (that is, the magnetic sensor 15) has moved to a predetermined position, and the motor 22 stops. Further, at this time, the contact plate is brought into contact with the pulp surface under a predetermined pressure.

(iii) When the cutting head 12 is moved in the X-axis direction in this state, the magnetic sensor 15 detects the wire 1c, and a certain period of time (magnetic sensor 1
5 detects the wire 1c, the cutter 17,
After the time required for the wire 18 to move to the front of the wire 1c has elapsed, the cutting head 12 is stopped, the cutters 17 and 18 are placed in front of the wire 1c, and the process proceeds to step (iv) below. In addition, as shown by the chain line in FIG. 5, when the pulp bale 1 is mounted on the roller conveyor in an inclined state, the support shaft 13 further moves to the right in FIG. Moving head position detection sensor
L ₂ is activated, and both sensors L ₁ and L ₂ are in the ON state. In such a case, motor 22 is operated to move cutting head 12 to the right in FIG. Then, the support shaft 13 is attached to the cutting head main body 12.
The head position detection sensor _L1 is turned ON and _L2 is turned OFF, and the contact pressure between the contact plate 14 and the pulp bale 1 is maintained constant. be done. Also, at the same time that the head position detection sensor L ₂ turns OFF, the motor 22
(iv) The cutting head 12 is further moved to the left in FIG. 6 to make the cutters 17 and 18 protrude forward from the notch in the contact plate 14, and in this state, the cutters 17 and 18 are crossed with each other. to cut the wire 1c. Note that the amount of protrusion of the cutters 17 and 18 is such that a sensor (not shown) provided on the proximal end side (on the right side in FIG. 6) of the head position detection sensors L ₁ and L ₂ is It is detected by being pressed by the part.

(v) Repeat steps (ii) to (iv) above to
The main wire 1c is cut, and then the cutting head 12 is moved away from the side of the pulp bale 1.

(vi) Move the drawing head 32 forward to bring the contact plate 14 into contact with the side surface of the pulp bale 1, and move the cutting head 1 while moving the guide frame 23 and the moving frame 33 in the X-axis direction.
In the same manner as in the case of positioning 2, the clamp 34 of the drawing head 32 is placed in a position facing the wire 1c, the clamp 34 is made to grip the wire 1c, and the drawing head 32 is moved in the Y-axis direction until it is in the fixed position. Guide roll 2 after returning to
Lower 6B.

(vii) When the main frame 24 is moved in the Y-axis direction, the wire 1c held by the clamp 34 is guided by the guide plate 27 and enters between the guide rolls 26A and 26B on the fixed side and the movable side. It is pulled outward in the Y-axis direction while being squeezed by the rolls. At this time, the vertical force generated by the tension of the wire 1c is applied to the upper rail 2 through the guide roll 26B and the guide frame 23.
Supported by 5.

(viii) After repeating the operations (v) to (vii) above to pull out the two wires 1c, the pulp turner 8 is operated to horizontally rotate the pulp bale 1 through 90 degrees, and the steps (iii) Return to , cut the remaining two wires 1c, and pull them out.

(ix) Operate the roller conveyor 2 to stop the pulp bale 1 at a position between the reversing machine 7A and the wrapping paper removing machine 9, and further blow air from a cleaning nozzle (not shown) onto the surface of the wrapping paper 1a. to blow away the dust.

(x) After turning the wrapping paper removing machine 9 to the position shown by the chain line in FIG. 1, the wrapping paper 1a is adsorbed and removed by the suction pad 44, and then retracted to the position shown by the solid line.

Furthermore, after the pulp bale 1 is held between the forks 43 of the reversing machine 7A and rotated through 180 degrees in a vertical plane, the wrapping paper is removed in the same manner as in the above case, and the roller conveyor 2 is operated again. When the pulp bale 1 is sent out downstream, the wire removal operation is completed.

"Effects of the Invention" As is clear from the above explanation, the present invention provides a main body frame which is provided with a contact plate which is movable in the same direction as the frame, which is movable in the direction toward and away from the side surface of the pulp bale. A support shaft is provided, a contact plate supported by the support shaft and pressed against the surface of the pulp bale, and a wire detection sensor are provided, and a plurality of contact plates are provided for detecting the relative position of the support shaft and the main body frame. Set up a sensor,
The support shaft is pushed out to the position where this one sensor is activated, and detection is performed while the contact plate is brought into contact with the pulp bale.As the pulp bale is in an inclined state, the contact plate is further pushed in from the predetermined position. In this case, one other sensor is activated, and when two sensors are activated, the main body frame is moved to a position where only one sensor moves, so that there is no contact with the pulp bale. The effect is that the contact pressure between the plate and the wire detection sensor can be maintained constant regardless of the posture of the pulp bale.

[Brief explanation of the drawing]

1 to 9 show an embodiment of the present invention, in which FIG. 1 is a plan view of the entire device, FIG. 2 is a plan view of the wire cutting machine, and FIG. 3 is a line cut along the line shown in FIG. 4 is a view taken along the second - line, FIG. 5 is a plan view of the cutting head, FIG. 6 is a view taken along the - line of FIG. 5, and FIG. 8 is a plan view of the wire removal machine, FIG. 8 is a view taken along the - line in FIG. 7, FIG. 9 is a view taken along the - line in FIG. 7, and FIG. 10 is a conventional example of a pulp bale. FIG. 11 is a plan view showing a conventional example of a pulp unpacking device. 1...Pulp bale, 1a, 1b...Wrapping paper,
1c...Wire, 2...Roller conveyor, 4A
...Wire cutting machine, 5A ...Wire removing machine, 7A
... Reversing machine, 8 ... Pulp turner, 9 ... Wrapping paper removal machine, 12 ... Cutting head, 12a ... Main body frame, 13 ... Support shaft, 13a ... Compression spring, 14 ... Contact plate, 15 ...Magnetic sensor, 1
7, 18... Cutter, 26A, 26B... Guide roll, 28... Brake device, 32... Pulling head, 34... Clamp, 35... Operating rod, 44... Adsorption device, 45... Rotating frame,
L ₁ , L ₂ ...Head position detection sensor.

Claims (1)

[Claims] 1 Sheet-like pulp accumulated in the vertical direction is wrapped with wrapping paper from the upper side and the lower side, and the wires are cut and removed from the pulp bale formed by tightly binding the pulp with vertically wound wires. In a detection device that is installed in a wire cutting machine or a wire pulling machine of a pulp unpacking machine that detects the position of the wire, a wire is placed on a movable frame that is movable in a direction along one side of the pulp. A main body frame is provided that is supported horizontally in a direction perpendicular to the moving direction and is driven by a motor to move in the said direction, and a plurality of contact plate support shafts are mounted on the main body frame in the moving direction of the moving frame. contact plates arranged at intervals from each other, movable in the same direction as the main body frame, biased in a direction approaching one side of the pulp veil, and attached to the contact plate support shafts; Further, a sensor is provided to detect the wire, and a head position detection sensor is provided between the main body frame and each contact plate support shaft to detect whether the mutual spacing thereof is a predetermined value. A wire detection device for a pulp unpacking machine featuring: