JPS62109733A - Wire detector for pulp unpacking machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention is an unpacking method that improves the unpacking efficiency by cutting and removing the wrapping paper of a package such as a pulp bale without manual intervention. 677 This relates to a detection device for detecting a wrapping paper fastening wire installed in the device.

``Conventional technology'' In general, paper plants that do not have pulp manufacturing equipment do not have a pulp manufacturing plan.・The sorted pulp transported from the factory is disintegrated by a pulper and then used as a raw material.

The sheet-like pulp is transported and stored as a so-called pulp bale I, which is wrapped in wrapping paper 1a and 1b from above and below and tied vertically and horizontally in a cross shape with wires 1c, as shown in FIG. 1O. Therefore, when this pulp is fed into a pulper and subjected to disintegration treatment, the wire lc of the pulp bale l is removed and the wrapping paper 1a, 1
It is necessary to manually perform the removal work of b.

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, a pulp unpacking method or a pulp unpacking device has been proposed in Japanese Patent Application No. 57-9752.

That is, as shown in FIG. 11, this unpacking device uses a centering device 3 to align the pulp bale 1 being conveyed by a roller conveyor 2 in the width direction of the roller conveyor 2, and a wire cutter 4 to cut the pulp bale 1 into the width direction of the roller conveyor 2. 1c, and the cut wire 1c is transferred to the wire removing machine 5.
The first suction device 6 is movable in a direction intersecting the roller conveyor 2.
While applying vacuum pressure to the wrapping paper 1a on the second side, lift it up and remove it. The pulp bale 1 is inverted and the lower wrapping paper 1b is directed to the second side by a saw-inverting machine 7, which is installed so as to surround the roller conveyor 2. The unpacking operation is performed by sucking the lower wrapping paper 1b into the second suction device 6B and removing it.

By the way, in order to cut the wire Ic with the wire cutter 4 and pull out the cut wire 1c with the wire puller 5, it is necessary to have the wire cutter 4 and the wire remover 5 accurately grasp the position of the wire Ic. be.

Such wire detection is performed, for example, by moving a metal detection means such as a magnetic sensor along the side surface of the pulp bale 1.
If the metal detection means is inclined with respect to the moving direction of the magnetic sensor as shown by the chain line in FIG. 11, the metal detection means may come into contact with the side surface of the pulp bale and become difficult to move.

[Problems to be Solved by the Invention] 31 The present invention has been made in view of the above circumstances, and its purpose is to provide a detector that can reliably detect wrapping wires regardless of the posture of the pulp bale. It is something to do.

In order to achieve the above object, the present invention provides a main body frame which is movable in the direction toward and away from the side surface of the pulp bale, and which is movable in the same direction as the frame. A contact plate support shaft is provided, a wire detection sensor is provided on the contact plate support shaft, and a sensor is provided to detect the relative position of the contact plate support shaft and the main body frame, and the detection result of this sensor is provided. 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 in accordance with the above.

"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.
The basic structure is the same as that of the pulp unpacking device described in No. 56664 or Japanese Patent Application No. 5'9-156665. A pulp turner 8 that rotates horizontally, a wire cutting machine 4A installed on one side of the pulp turner 8 for cutting wires, and a wire removing machine installed at a position facing the wire cutting machine 4A for pulling out wires. 5A, a reversing machine 7A which is provided downstream of the wire cutting machine 4A and wire removing machine 5A and which clamps the pulp 1 and rotates it vertically; The basic configuration is a wrapping paper removing machine 9 that rotates above the pulp and adsorbs wrapping paper, and the wire cutting machine 4A and wire removing machine 5A are provided with the wire detection device of the present invention.

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 a rail IO.10 arranged parallel to the running direction of the roller conveyor 2 (hereinafter referred to as the X-axis direction). A cutting head 12 is provided on a frame 11, 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 I2 includes 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 the contact plate 1
4, and cutters 17 and 18 that advance and retreat in the Y-axis direction through an opening 16 provided in the contact plate 14, and the cutters 17 and 18 cross each other. It rotates as if to cut the wire. Further, the contact plate I4 is supported at both ends in the width direction by the support shafts 13, 13, and is supported rotatably in a vertical plane by support pins 19, 19. The angle is changed according to the posture of the pulp or the unevenness of the side surface of the pulp. In the figure, reference numeral 20 is a fluid pressure cylinder that operates the cutters 17 and 18, reference numeral 2I is a motor that drives the moving frame 11 in the X-axis direction, and reference numeral 22 is a main body frame 12a of the cutting head 12 (supporting the cutters 17 and 18). The moving frame 1. This is a motor that moves in the Y-axis direction at I I -.

Furthermore, the wire cutting machine 4A described in "1" is provided with a control mechanism for maintaining the contact pressure between the contact plate 14 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. is urged in the direction of approaching the roller conveyor 2. In addition, head position detection sensors I, 1 and L, each consisting of a limit switch, etc., are provided (J) at intervals in the axial direction of the support shaft 13 on the main body frame 12a. Sensor L1/L, IJ: , the support shaft 1
3 in the Y-axis direction (the axial direction of the support shaft I3), it is pressed and activated, and it is determined whether or not the position of the magnetic sensor 15 is appropriate depending on which operating state these detection sensors are in. Decisions are made to advance and retract the cutting head 12.

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 provided above and below, and its movement in the vertical direction is restricted, and serves as a fixed guide for guiding the wire pulled out from the pulp. roll 26
A.26A and movable guide roll 26 that can move up and down
B.26B, and these guide rolls 2
6A and 26B have a guide plate 27 having a sliding surface for guiding and centering the wire at the center in the width direction, and further includes a brake device 28 for regulating movement in the X-axis direction, and the brake device 28 is operated. The brake release mechanism 29 has a brake release mechanism 29 to release the brake.

The main frame 24 is mounted on rails 30, 30 provided along the Y-axis direction, and further, rails 31, 31 are mounted on the main frame 24, along the X-axis direction. And on this rail 31.31
) A movable frame 33 is mounted to support the drawing head 32 in a movable manner.

The drawing head 32 has a clamp 34 that grips the wire.
and a contact plate 14 configured similarly to the contact plate 14 of the fIU4A (wire cutting), and the contact plate 14, like the contact plate 14 of the cutting machine 4A, is movable back and forth in the Y-axis direction by supporting shafts 13 and 14. It is supported by the tip of pin 13, and is supported by the tip of pin 19.
It is rotatably supported by 19.

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 at the front of the moving frame 33.
is provided in a protruding manner, and by moving the main frame 24 forward in the Y-axis direction (movement in the direction approaching the roller conveyor 2), the operating rod 35 releases the swinging arm connected to the brake release mechanism 29. Press 29a,
Release the brake of the guide frame 23. Further, the actuating rod 35 engages with a part of the guide frame 23 to connect the guide frame 23 and the main frame 24, and these
This allows them to move together in the axial direction.

In addition, in FIGS. 7 to 9, reference numeral 36 indicates a motor that moves the main frame 24 in the Y-axis direction, 37 indicates a motor that moves the moving frame 33 in the X-axis direction, and 3
8 is a motor that moves the main body frame 32a (frame that moves together with the clamp 34) of the extraction head 32 in the Y-axis direction, and 39 is a drive device that operates the clamp 33.

Furthermore, the drawing head 3 of this wire drawing machine 5A
2 also includes a position detection sensor (similar to the cutting head 12).
By controlling the motor 38 according to the operating state of the sensor, the contact plate 14 and the pulp bale 1 can be connected to each other regardless of the posture of the pulp bale I.
The contact pressure is maintained constant.

On the other hand, a reversing machine 7C installed on the downstream side of the wire cutting machine 4Δ and the wire pulling machine 5A is equipped with two upper and lower forks 43 on a rotating frame 42 vertically rotated around a shaft 41 by a motor 40. (The lower fork is not shown) The fork 43 grips the valve from below and rotates it.

Further, the fork 43 is retracted to a position on one side of the operating range of the wrapping paper removing machine 9.

Furthermore, the wrapping paper removing machine 9 has four or a plurality of suction devices 44 mounted on a revolving frame 7I5, 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 (path shown), and the roller conveyor 2 is stopped to transport the pulp bale l. Position it on one side of 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 I4, When the support shaft 13 moves in the Y-axis direction (rightward in FIG. 6) and the head position detection sensor L is pressed against the end of the support shaft 13, the force on the contact plate 14 (that is, the magnetic sensor 15) is increased. When it is determined that the pulp has moved to a predetermined position, the motor 22 is stopped.At this time, the contact plate is brought into contact with the pulp under a predetermined pressure.

(iii) When the cutting head I2 is moved in the X-axis direction in this state, the magnetic sensor 15 detects the wire 1c, and after this detection, the magnetic sensor 15 detects the wire Ic.
After the cutter 17/I8 moves to the front of the wire 1c after detecting the wire 1c, the cutting head 1
2 is stopped, the cutters 17 and I8 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 Figure 5, the pulp pail l is a roller conveyor.
- When riding in an inclined state, the support shaft 13 further moves to the right in FIG. 6 during the movement in the X-axis direction, the head position detection sensors T and -p are activated, and the sensor
Both l and L2 are in the ON state. In such a case,
The motor 22 operates to move the cutting head I2 to the right in FIG. Then, the support shaft 13 is attached to the cutting head main body 12.
The head position detecting sensor I71 is turned on as the head moves toward the left in FIG. 6 relative to a.

With L2 in the OFF state, the contact pressure between the contact plate 14 and the pulp veil l is maintained constant. Also, at the same time that the head position detection sensor L2 becomes OI'i'F, the motor 22 is also turned off (iv) The cutting head 12 is further moved to the left in FIG. The cutters 17 and 18 are caused to protrude forward from the notch, and in this state, the cutters 17 and 18 are crossed with each other to cut the wire IC. In addition, the amount of protrusion of the cutters 17 and 18 is ! j'll na '\
Tight position detection sensor L, proximal end side (6th position) than T72
The sensor (not shown) installed on the support shaft I3 (on the right side of the figure)
It is detected by being pressed at the proximal end of the

(■) The operation of 1-(ii) to lv) is further repeated to cut the two wires 1c, and then the cutting head 12 is separated from the side surface of the pulp hale 1.

(vl) In the case of positioning the cutting head I2 while moving the drawing head 32 to the position where the contact plate 14 is brought into contact with the side surface of the pulp hale 1 and moving the guide frame 23 and the moving frame 33 in the X-axis direction. Similarly, attach the clamp 37I of the drawing head 32 to the wire 1c.
The clamp 341 is placed at a position facing the wire 1c.
At the same time, the drawing head 32 is moved in the X-axis direction, and after returning to the home position, the tubular roll 26B is lowered.

(\111) When the main frame 24 is moved in the X-axis direction, the wire 1c held by the clamp 34 is
It is guided by the plate 27, enters between the guides 26A and 26I3 on the fixed side and the movable side, and is pulled out outward in the Y-axis direction while being squeezed by both rolls. At this time, the tenno r of wire 1c? The vertical force generated by the shaft is supported by the -1- side rail 25 via the guide roll 26B and the guide frame 23.

(vii) After pulling out the two wires Ic by repeating the operations in (v) to vii), the pulp turner 8 is operated to horizontally rotate the pulp bale 1 over 90', and the steps described in (iii) above are carried out. Go back and cut the remaining two wires 1c (2. Pull them out.

(ix) Operate the roller conveyor 2 to stop the pulp bale 1 at a position between the reversing paper v9.7A and the wrapping paper removing machine 9, and then blow air from a cleaning nozzle (not shown) onto the surface of the wrapping paper 1a. Blowing (=J (J does not 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 attracted to the suction pads 4 and 1 and removed, and then it is retracted to the position 1' shown by the solid line.

Furthermore, after the pulp bag 15--bar I is held between the forks 43 of the inverted i7A and rotated over +80° in the vertical plane, the wrapping paper is removed in the same manner as in the above case, and the roller conveyor 2 is again When the pulp bale I is sent out to the downstream side by actuating, the wire removal operation is completed.

``Effects of the Invention'' As is clear from the explanation below, the present invention provides a main body frame that is movable in the direction toward and away from the side of the pulp bale, and is mounted on a main body frame that is movable in the same direction as the frame. A contact plate support shaft is provided, and the contact plate is supported by the support shaft and pressed against the surface of the pulp bale. A plurality of sensors are provided to detect the position, and the support shaft is pushed out to the position where one of the sensors operates, and the detection is performed while the contact plate is in contact with the pulp bale. When the contact plate is pushed further from the predetermined position, another sensor is activated, and when two sensors are activated, the main body frame is moved to a position where only one sensor is activated. Because it is a thing,
This has the effect that the contact pressure between the pulp veil, the contact plate, and the wire detection sensor can be maintained constant regardless of the posture of the pulp veil.

[Brief explanation of drawings]

1 to 9 show an embodiment of the present invention,
Fig. 1 is a plan view of the entire device, Fig. 2 is a plan view of the wire cutting machine, Fig. 3 (J is a view taken along the line ■-■ in Fig. 2,
The figure is a view taken along the second IV-IV line, Figure 5 is a plan view of the cutting spatula 1, Figure 6 is a view taken along the line ■-■ in Figure 5, and Figure 7 is wire removal. A plan view of the machine, Figure 8 is a view taken along the line ■-■ in Figure 7, Figure 9 is a view taken along the line IX-IX in Figure 7, and Figure 10 is a conventional pulp bale. FIG. 11 is a perspective view showing an example, and 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 removal machine, 7A... Reversing machine, 8...
...Pulp turner-19...Wrapping paper removal machine, 1
2... Cutting head, 12a... Body frame, I3... Support shaft, 13a... Compression spring, 14... Contact plate, 15...・Magnetic sensor,
17・18・・・Cutter, 26A・26B・・
... Guide roll, 28 ... Brake device,
32... Pulling head, 34... Clamp, 35... Operating rod, 44... Adsorption device,
45... Rotating frame, Ll/L2... Head position detection sensor.

Claims (1)

[Claims] Pulp made by cutting and removing the wires from a pulp bale made by wrapping sheet-like pulp accumulated in the vertical direction with wrapping paper from the upper side and the lower side, and binding it with vertically wound wires. In a detection device that is installed in a wire cutting machine or a wire pulling machine of an unpacking machine and detects the position of the wire, on a movable frame that is movable in a direction along one side of the pulp, a sensor is mounted on a movable frame that is movable in a direction along one side of the pulp. A main body frame supported so as to be horizontally movable in orthogonal directions is provided, and a contact plate support shaft supporting a sensor for detecting the wire is disposed on the main body frame so as to be movable in the same direction as the main body frame, When the contact plate scans along the pulp surface, the head position detects the relative position between the contact plate support shaft and the main body frame in order to adjust the mutual distance between the contact plate and the main body frame and keep the contact pressure constant. A wire detection device for a pulp unpacking machine, characterized by being equipped with a detection sensor.