JPH03289429A - Removing structure for bale tying material - Google Patents

Abstract

PURPOSE:To increase the efficiency of work to remove a tying material from a bale by a method wherein the title structure is equipped with a cutting means to cut one of front and rear parts of a tying material at where it is not pinched, and a driving means to selectively rotate a turnable arm around the central axis toward a bale. CONSTITUTION:Under a condition in which a bale 4 is pinched by a forklift 2 attached with an attachment 1 as a pinching means, one spot of a wire 5 is cut by double blades 7, 8 on a surface of the bale 4, opposite from the forklift 2. In this stage, by pinching the bale 4 by the attachment 1, the bale 4 is slightly compressed, and a part of the wire 5 between the attachment 1 is loosened, and the wire goes across between both hooks 16. Then, by rotating a hydraulic motor 11 of a driving unit 10 as a driving means, a rotary arm 13 with fixed hooks 16 is turned through a gear box 12. By this motion, sliding resistance up to a certain degree is generated on the wire 5 by pressing force between/the bale 4 and attachment 1, and therefore the wire 5 can be removed from the bale 4 by winding the wire 5 around both hooks 16.

Description

DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention] <Industrial Application Field> The present invention particularly relates to a method for automatically removing binding material wound around a compression-formed bale. Regarding the removal structure.

<Conventional technology> For example, discarded magazines, etc. are collected and recycled.
It is known to reuse paper. The recovered paper is formed into a bale by compressing, for example, a magazine or the like using a press machine, and the bale is loaded onto a large truck and transported to a recycling factory. At the recycling plant, the bales are picked up by a forklift with a side-clamp attachment, taken off the truck, and transported to the recycling line by the forklift. By the way, in order to prevent the bale from collapsing during transportation, for example, several turns of wire are wound around the bale as a binding material, and it is necessary to prevent the wire from getting mixed in during the recycling process.

Conventionally, wire removal work was done manually by cutting each wire at one point using a bench or the like and pulling the wires apart, which resulted in poor work efficiency and increased work costs. There was a problem.

<Problems to be Solved by the Invention> In view of the problems of the prior art, the main object of the present invention is to provide a bale binding material removal structure that can automate the removal of bale binding material. be.

[Structure of the Invention and Means for Solving the Problems] According to the present invention, the purpose is to clamp a bale around which a bundling material is wound together with a part of the bundling material by its side surfaces. a clamping means, a cutting means for cutting one of the front and rear portions of the binding material not clamped by the clamping means, and a circumference of a central axis from the other side of the front and rear portions of the binding material toward the bale. a plurality of arms extending radially from the central axis and having hooks at free ends thereof projecting along the central axis; and a plurality of arms for selectively rotating the arms. It is characterized by having a driving means, and a means for stopping the driving means when the standby state is detected so that the arm waits at a predetermined rotational position after rotating the arm. This is accomplished by providing a bale binding material removal structure that does the same.

<Operation> By doing so, the bale is held by the holding means with its sides, one of the unpinned front and rear parts of the binding material is cut, and the bale is rotated from the other side around the central axis toward the bale. By rotating the movable arm, the binding material can be wound up between the hooks provided at each extending free end of the plurality of arms, and the binding material can be removed.

<Embodiments> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a layout diagram of main parts in a recovered paper recycling factory, showing a first embodiment to which a bale binding material removal structure according to the present invention is applied. As shown in FIG. 2, first, a forklift 2 equipped with a side clamp type attachment 1 serving as a clamping means lifts a bale 4 loaded on the bed 3 of a large truck in both longitudinal directions. Grasp it from the sides and lower it.

As clearly shown in the figure, this bale 4 is compressed into, for example, a rectangular parallelepiped shape by a press machine at a waste paper collection factory, and in order to prevent it from collapsing during transportation, there are, for example, four A wire 5, which serves as a book binding material, is wound around it.

At the recycling factory, the bale 4 unloaded from, for example, a truck bed 3 by a forklift 2 at the location indicated by ■ in FIG. It is transported to the location by forklift 2. A pillar 6 is attached to the fixed base 6a of this wire cutting machine 6.
As shown in FIG. 3, a plurality of fixed blades 7 are arranged at a predetermined pitch in the direction of the pillar 6b. Further, a plurality of movable blades 8 fixed to a rod received in the pillar 6b are arranged with the same pitch as the above-mentioned predetermined pitch, and are reciprocated along the direction in which the pillar 6 is erected by a drive device (not shown). is made movable.

When the bale 4 is held by the forklift 2,
Since the bale 4 is compressed in its longitudinal direction, the wires 5 at the front and rear portions where the wires 5 are not clamped, for example, the front and rear portions of the bail 4 viewed from the forklift 2 in the gripped state, become slack.

Operate the forklift 2 so that the front slack part of the wire 5, which is one of the parts shown above, is inserted between the two blades 7.8,
By operating, for example, a hanging switch box (not shown) while maintaining this state, the movable blade 8 moves in the direction of the dashed arrow in FIG. and connect one part of the wire 5 with the double edge 7
．． It can be cut by 8. By moving the movable blade 8 by one pitch or more, even if the wire 5 is inserted between the backs of the double blades 7.8, it can be cut.

After cutting the wire 5 at one place in this way, the first
The forklift 2 is moved toward the belt conveyor 9 located at the bottom of the figure, and the bale 4 is placed on the belt conveyor 9.
Put on.

While moving from ■ to ■ in FIG. As shown in FIG. 4, the hydraulic motor 11 of the drive unit 10, which is installed as a drive means, is rotated by utilizing the empty space of the support part of the attachment 1, and connected via a gear box 12 having a bevel gear. The rotary arm 13 rotates. The above hydraulic motor 11 and gear box 1
2, the attachment is fixed on a flat fixing plate 14 fixed to the frame 2a. A steel plate cover 15 that covers a part of the front side of the forklift 2 is fixed to the front end of the fixed plate 14.

The output shaft 12a of the gear box 12 passes through the cover 15 and protrudes forward, so that the center axis of the output shaft 12a is directed toward the bail 4 held by the attachment 1. As shown in FIGS. 5 and 6, the center of a rotary arm 13, which is shaped like a rectangular bar, is fixed to the protruding end of the output shaft 12a, and is arranged at a radius from the central axis of the output shaft 12a. A pair of hooks 16 that protrude forward along the central axis of the output shaft 12a are fixed to opposite ends of the rotary arm 13 that extends in the direction. The hook 16 has, for example, a semi-cylindrical shape that is divided into two along the axis, and both hooks 16 are provided so that the respective divided surfaces face each other. Further, as clearly shown in FIG. 6, both side edges of the hook 16 along the direction of rotation of the rotary arm 13 are arranged so that they protrude relatively largely from both left and right sides of the rotary arm 13 in the figure. It is formed.

A rotary arm 13 is mounted on the fixed plate 14 of the drive unit 10.
A position detection device 17 that incorporates a speed reduction mechanism connected to the gear box 12 is provided to constitute a means for bringing the hydraulic motor 11 into a stopped state in a standby state.

The position detection device 17 includes, for example, a rotating disk that rotates once through the speed reduction mechanism each time the rotating arm 13 rotates a predetermined integer number of times, and a magnetic or photoelectric detection sensor 17a combined with the rotating disk. A signal is output every rotation of the rotating disk. Therefore, as shown in FIGS. 4 to 6, the rotary arm 13 is rotated the predetermined integer number of times and then stopped at a predetermined rotational position in which the longitudinal direction is oriented approximately vertically. By this,
That is, by stopping the hydraulic motor 11 at that position based on the above-mentioned signal, the position where both hooks 16 always face each other by vertically sandwiching the portion of the wire 5 that crosses the rotating arm 13 as shown in FIG. , the rotary arm 13 can be put into a standby state.

By the way, by holding the bail 4 with the attachment 1, the bail 4 is slightly compressed, so the wire 5
The portion between the attachments 1 is loosened as shown in FIG. 2, and the wire 5 comes to cross between both hooks 16 as shown by the solid line in FIG. As described above, while moving from the position ■ in FIG. 1 to the position ■, the hydraulic motor is rotated to move the rotary arm 13 in the direction of the arrow in FIG. 6.
By rotating the bail 4 and attachment 1
Since the pressure contact force between the wire 5 and the wire 5 generates a sliding resistance, the wire 5 can be wound between both hooks 15 as shown by the imaginary line in FIG. can be removed. After the bale 4 from which the wires 5 have been removed is placed on the belt conveyor 9, the forklift 2 is moved toward the wire collection platform 21 located at the location marked ■ in FIG. Remove it from both hooks 16 and drop it onto the wire recovery table 21.

As a device for removing the wire 5 wound around the rotating arm 13 from both hooks 16, as shown in FIGS. 4 and 5, there are two
For example, a total of four reciprocating hydraulic cylinders 19 arranged in pairs are supported by the fixed plate 14 via a cover 15 and a bracket (not shown). A pushing plate 20 is fixed to the tip of the rod of the cylinder 19, and by operating a hydraulic control lever (not shown), the rod of the cylinder 19 is pushed out to the left in the figure as shown by the imaginary line in FIG. As shown in FIG. 6, the extrusion plate 20 protrudes without interfering with the rotary arm 13, and the extrusion plate 20 is moved in the straight line portion that goes around both hooks 16 of the wire 50.
contacts and pushes out the wire 5, and the wire 5 is removed from the hook 16.
can be easily removed.

A second embodiment based on the present invention is shown in FIGS. 7 and 8, and the same parts as in the first embodiment are given the same reference numerals and detailed explanation thereof will be omitted. In this second embodiment, a wire cutting machine 6 is attached to a forklift 2,
It has a structure in which a wire winding device consisting of a rotating arm 13, a drive unit 10, etc. is placed separately as a fixing device.

The wire cutting machine 6 is integrally attached to the forklift 2 instead of being provided as a fixed structure in the first embodiment, and as shown in FIG.
Only the pillar 6a portion is attached to the frame 2a.

The front surface of the pillar 6a is covered by a cover 15, and a slit 22 is opened in the center of the cover 15 along the vertical direction in the figure, which is perpendicular to the direction in which the attachment 1 is clamped. A movable blade 8 protrudes forward from the front surface of the cover 15 by a predetermined amount.

In addition, at the location (■) in FIG. 1, a winding device 23 having a rotary arm 13 and a drive unit 0 is installed as shown in FIG. Instead of being mounted on the floor, it is fixedly placed on the floor. This winding device 23 is fixed to a foundation (not shown) via a base 24, and as shown in FIG.
a and 25b are provided upright, and a drive unit 10 and the like similar to those in the first embodiment are provided between both covers 25a and 25b.

In this second embodiment, the veil 4 is similar to the first embodiment.
While moving the forklift 2 from the location ■ to the location ■ in FIG. For example, a portion on the forklift 2 side is cut by the wire cutting machine 6 in the same manner as in the first embodiment. Then, as shown by the arrow in FIG.
forklift 2 while holding it with attachment 1.
is advanced toward the winding device 23, and the other part of the wire 5, that is, the front part, which is the opposite side to the cut side, is inserted between both hooks 16 of the rotating arm 13, and the In this state, the forklift 2 is placed in a standby state.

Next, by operating a hanging switch box (not shown) to rotate the rotary arm 13, the wire 5 is wound up by the rotary arm 13 in the same manner as in the first embodiment. After the wire 5 is removed from the bale 4, the forklift 2 is operated to place the bale 4 on the belt conveyor 9.

By the way, by driving the cylinder 19 and pushing out the pushing plate 20 toward the front of the front cover 25a, the wire 5 is removed from the rotating arm 13 and falls.
In the embodiment, since the winding device 23 is fixedly installed,
If a recovery table 21 similar to that of the first embodiment is provided in front of and directly below the winding device 23, the wire 5 can be recovered.

In each of the above embodiments, the structure in which the wire 5 is removed from the bail 4 while holding only one bail 4 has been described, but for example, when the height of the bail 4 is relatively low, two
It is possible to grasp the stacked parts at once, and in this case, it is possible to handle this by using a forklift truck equipped with two sets of relatively short rotating arms 13 and drive units 10, one above the other.

Further, the rotary arm 13, the drive unit 10, or the wire cutting machine 6 is not limited to being integrally attached to the forklift 2, but may be attached to an arm of a robot installed in a factory, for example. Furthermore, the bale 4 may be held by the holding means brought close to the bale 4, for example, from either the top or bottom direction in each of the above-mentioned embodiments.

Furthermore, in this embodiment, since one rotary arm 13 is used, the number of arms extending in the radial direction from the central axis of the output shaft 12a is two. may be provided.

[Effects of the Invention] According to the present invention, the plurality of arms extending in the radial direction from the central axis toward the bale are rotated, and the binding material is distributed between the hooks provided at the free end portions of the arms. The binding material can be automatically removed from the bale by winding it up, and there is no need to manually remove the binding material, resulting in high efficiency in bale binding material removal work and a reduction in work costs. There is.

[Brief explanation of drawings]

FIG. 1 is a layout diagram of main parts showing a bale binding material removal structure to which the present invention is applied. FIG. 2 is a perspective view showing an attachment portion of a forklift to which the present invention is applied. FIG. 3 is a side view showing the main parts of the wire cutting machine. FIG. 4 is a plan view of the main parts of the attachment section of a forklift to which the present invention is applied. FIG. 5 is a view of the line ■-■ in FIG. 4. FIG. 6 is a front view showing the main parts taken along line VI-VI in FIG. 5. FIG. FIGS. 7 and 8 are perspective views of essential parts showing the second embodiment. 1... Attachment 2... Forklift 2a
... Frame 3 ... Loading platform 4 ... Bale
5... Wire 6... Wire cutting machine 6a.
...Fixed base 6b...Column 7...Fixed blade 8...Movable blade 9...Belt conveyor 1
0... Drive unit 11... Hydraulic motor 12...
・Gear box 12a... Output shaft 13... Rotating arm 14... Fixed plate 15... Cover 1
6... Hook 7... Position detection device 18... Detection sensor 9... Cylinder 20... Extrusion plate 1...
・Wire recovery table 22...Slit 3...Wind-up device 24...Base 5a, 25b...Cover Fig. 1

Claims (1)

[Claims] a clamping means for clamping a bale around which the binding material is wound, along with a part of the binding material by its side surfaces;
a cutting means for cutting one of the front and rear portions of the bundling material that is not clamped by the clamping means; a plurality of arms extending in a radial direction from the central axis and having hooks protruding along the central axis at the free end portions thereof; driving means for selectively rotating the arms; A bundling material for a bale, characterized in that it has means for stopping the driving means when the standby state is detected so that the arm waits at a predetermined rotational position after the arm is rotated. removal structure.