JPH0398838A - Pushing and cutting mechanism in bale opening dividing device for packed body - Google Patents

Abstract

PURPOSE:To make it possible to securely cut a tying member on a sideways pushed packed body by a method wherein the advance of a cutting blade is stopped by regulating the maximum advance position of the cutting blade so that the advance quantity of the cutting blade, which advances toward a packed body side further from the front surface of a pushing pad, always becomes uniform. CONSTITUTION:The title device is equipped with a pushing pad 17 for a pushing device 7 which pushes a packed body 3 sideways until the packed body 3 hit a packed body holding device at a determined position 8, and a cutting blade 12 for a cutting device 5, which advances in the same direction with the advancing direction of the pushing pad 17 and cuts a tying member 2 which is located at the opposite side to the packed body holding device at a determined position 8. In addition, a cutting blade advance regulating unit 28 which makes it possible to stop the advance of the cutting blade 12 by regulating the maximum advance position of the cutting blade so that the advance quantity of the cutting blade, which further advances toward the packed body 3 side from the front surface of the pushing pad 17, always becomes uniform, is equipped. By this method, the tying member 2 on the packed body 3, which has been pushed sideways, can be securely cut by the cutting blade 12 which advances by a designated distance from the front surface of th4 pushing pad 17.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pushing/cutting mechanism in an unpacking device for packages, and more specifically, to a package in which compressed cardboard boxes or the like are bound together with wire rods. This invention relates to a device that automatically unpacks a package by inserting a fork-like claw into the wire and rotating it, winding up and removing the bundled wire. [Conventional technology] Collected waste paper such as cardboard boxes and waste paper is transported to a paper mill for recycling. In order to improve transportation efficiency and ease handling, waste paper is compressed in advance and bound with wire materials such as wire or resin tape. Before the waste paper is put into a dissolving pulper at a paper mill, the binding wire is removed from the package in advance so as not to interfere with dissolving and stirring in the pulper. The above-mentioned work to remove the bundled wire is usually done just before being sent to the pulper, but it consists of the work of cutting the bundled wire and the work of collecting the bundled wire for separate disposal. ．． Previously, workers had to cut wires and other binding wires one by one with a tool, which was extremely inefficient.Furthermore, the binding wires spread out around the cardboard after unpacking, and it took a lot of time to collect them. It was. In addition, there was a problem in that the binding wires could bounce during cutting or collecting operations, requiring constant attention during the work. [Problem to be Solved by the Invention] In order to solve the problem in removing such binding wires, the present applicant has proposed, in Japanese Patent Application Laid-Open No. 64-9137, etc. We have proposed an unpacking device in which a fork-like claw is inserted into the binding member of the bag to wind it up. This system realizes automation of unpacking work, and includes a pushing device that moves the package that has been stopped mid-transfer to one side on the transfer device, and a bundling device for the package. A winding device that inserts and rotates a fork-shaped claw body to wind up a binding member, and with the fork-shaped claw body inserted into the binding member, cuts the binding member before winding up by advancing a cutting blade. It is equipped with cutting equipment, etc. In such a device, cutting of the binding member is performed by moving the cutting blade forward of the pushing pad of the pushing device while the package is brought closer to the package position holding device. ．． The convergence operation by the push pad stops when the pressure increase in the hydraulic circuit of the push cylinder that displaces the push pad is detected to exceed a predetermined pressure, and a certain amount of compressive force is applied to the package in the width direction. The state will be as follows. On the other hand, the advance of the cutting blade to cut the binding member is stopped due to the operation of a limit switch that detects that the cutting blade has advanced a predetermined amount and the binding member is cut, or when the cutting cylinder is stopped. This occurred when an abnormal increase in pressure in the hydraulic circuit was detected and the binding member was caught between a foreign object mixed in the package. By the way, the external dimensions of the packages sent by the transport device are not always the same. Furthermore, even if the waste paper has the same volume, the degree of compression of the waste paper and the binding force of the binding member may differ, or the binding force may be weakened during handling of the package. As a result, the position of the side surface of the package on the pushing pad side when it is moved by the pushing device will differ each time. Therefore, when cutting the binding member with the cutting blade, it is necessary to advance the cutting blade until it is sufficient for cutting. As mentioned above, the advancement of the cutting blade is stopped when the limit switch detects that the cutting blade has advanced a predetermined amount, or
This occurs when excessive pressure rise in the hydraulic circuit of the cutting cylinder is detected. Therefore, if the width of the package is large or the binding force of the binding member is strong, the cutting blade will advance excessively even though cutting has been completed. on the other hand,
If the width of the package is small, or if the binding force of the binding member is weak and the binding member deforms significantly, the binding member may not be able to be cut even if the cutting blade advances a predetermined amount. This happens because the predetermined amount of advance of the cutting blade is determined based on the most retracted position of the cutting blade. This is based on the fact that the operations of the pushing device and the cutting device can be controlled individually, and that the structure required for this control can be simplified. However, the present inventors found that when the binding member is cut from the opposite side of the packing body position holding device where the pronged claw body is located, the third
As shown in the figure, we found that the bundled waste paper 9 naturally deforms into a roughly fan-like shape when viewed from above. Therefore, if the procedure of inserting the prongs into the bundling member after cutting the bundling member is adopted, the insertion of the prongs into the bundling member will be ensured, and this will improve the structure and operation to facilitate insertion. It was found that the need for consideration can be significantly reduced. In addition, when taking the above procedure, if the width of the package is large, the cutting blade will advance excessively, forcing unnecessary operation, and the pushing action of the cutting blade that advances too far may cause damage. The dispersion of waste paper increases, leading to problems such as the load collapsing when being transported to the pulper. On the other hand, if the width of the package is small, unless all of the binding members wrapped in multiple stages are cut, it is impossible for the waste paper to deform into a fan shape, and the binding member of the pronged claw body There is a problem that either it becomes impossible to insert the , or it is necessary to introduce a mechanism to make it happen. This occurs because the relative positional relationship between the pushing motion of the pushing device and the cutting motion of the cutting device is not taken into consideration. This is not only due to this, but also because the above-mentioned approximately fan-shaped deformation is not taken into account. The present invention is based on these findings and attempts to solve the above-mentioned problems.The present invention aims to solve the above-mentioned problems.Even if the convergence dimension of the packages whose binding members are to be cut differs each time, the present invention aims to solve the above-mentioned problems. The bundling member can be cut reliably, and the structure of the restraining member that regulates the width adjustment position can be simplified by ensuring sufficient clearance when inserting the pronged claw body into the bundling member, and resisting the pushing force. It is an object of the present invention to provide a pushing/cutting mechanism for a package unpacking device that does not require high strength or rigidity. [Means for Solving the Problems] The present invention provides a package in which waste paper is bound with a binding member,
After being moved to a fixed position on the conveyor by the pushing device,
The present invention is applied to an unpacking device for a package in which the fork-like claws of a winding device are inserted into the binding member, and the binding member is wound up by rotation thereof. As shown in FIG. 1, its features include the pushing pad 17 of the pushing device 7 that brings the package 3 closer together until it hits the package fixed position holding device IE8, and the advancing direction of the pushing pad 17. The binding member 2 advances in the same direction as the packing body position holding device 8 and is located on the opposite side of the package body position holding device 8.
and a cutting blade l2 of a cutting device yl5. Then, the maximum advancing position of the cutting blade 12 is regulated and the advancing of the cutting blade 12 is stopped so that the advancing amount of the cutting blade l2 that advances from the front surface of the push pad 17 toward the package 3 side is always constant. It is also provided with a cutting blade advancement regulating means 28 that allows the cutting blade to move forward. [Operation] By advancing the pushing pad 17 of the pushing device 7, the conveying device w4
Move the upper package 3 until it hits the package position holding device 8. Regardless of whether the width of the package 3 is large or small, the package 3 is always pressed toward the package position holding device 8 on the side where the fork-like claws 13 of the winding device f6 are located. Therefore, the amount of advance of the pushing puff 17, that is, the stopping position, varies depending on the dimensions of the package 3, the degree of compression of the waste paper 9, and the magnitude of the binding force by the binding member 2. Next, the cutting blade 12 of the cutting device 5 advances in the same direction as the pushing pad l7, and the binding member 2 on the opposite side of the package position holding device 8
is disconnected. The amount of advance of the cutting blade 12 at this time is determined based on the position of the pushing pad 17 that presses the package 3. That is, for example, the position regulating member 17 of a certain length provided behind the pushing puff 17 that has advanced
A and a mint switch 16B provided in the cutting device 5
When the cutting blade advancement regulating means 28 including the following functions and the limit switch 16B is kicked by the position regulating member 17A, the cutting blade l2 reaches the maximum advanced position. The position is set at a position where the pushing pad 17 extends a certain distance L (see FIG. 12) toward the package 3 from the front surface, and the binding member 2 is cut during this time. Before inserting the pronged claw body 13 into the binding member 2 of the bundled packages 3, the binding member 2 binding the packages 3 is cut, and the unpacked waste paper 9 etc. is flattened. It is distorted into a roughly fan-like shape [see Figure 3]. That is, the cut side expands, and the fan exhibits a deformation in which the side of the pronged claw body 13 becomes the main side of the fan. The fork-shaped claw body 13 is located on the side surface of the package 3, but the binding member 2 separated from the side surface of the unpacked waste paper 9
Since the waste paper 9 is advanced toward the end, the waste paper 9 is not torn off, and a part of the waste paper 9 is not drawn in when the binding member 2 is wound up. [Effects of the Invention] According to the present invention, even if the concavity dimensions of the packages whose binding members are to be cut and the binding force of the binding members are different, the binding members of the packed bodies that have been brought closer together can be cut in front of the pushing pad. The cutting blade advances a certain distance from the blade, making it possible to cut reliably. Furthermore, it is possible to prevent the unpacked waste paper from becoming excessively loose due to the advance of the cutting blade, and to create a sufficient gap between the side of the waste paper and the binding member to facilitate the insertion of the pronged claws. It can be secured. Furthermore, it is possible to simplify the structure of the package position holding device that regulates the width shifting position, and the strength and rigidity to resist the pushing force of the pushing device can be reduced. [Examples] The present invention will be explained in detail below based on drawings showing examples thereof. FIG. 1 is a plan view of a package unpacking device 1, in which a conveying device 4 transports a package 3 tied with a binding member 2.
, a cutting device 5 for cutting the bundling member 2, a winding device 1f6 for winding the bundling member 2, a pushing device f7, and a packing body fixed position holding device for regulating the position when the packing body 3 is brought closer together. It is equipped with W8. As shown in FIG. 2, the package 3 is made by compressing waste material 9 such as a crushed cardboard box or waste paper and binding it with a wire or tape-like binding member 2. Each of the waste sheets 9 is in a vertical position, and the binding member 2 surrounds the waste sheets 9 horizontally so as to maintain compression of the waste sheets 9, thereby tying the entire waste paper 9. The conveying device 4 shown in FIG.
as shown in the white arrow to the unpacking position lO, and as shown in FIG. For example, it is a bread conveyor that moves by a distance l shown or is conveyed in the direction of arrow 11. The cutting device w5 shown in FIG. 1 is for cutting the binding member 2 binding the packages 3 on the bread conveyor 4, and advances in a direction intersecting the conveying direction 11.
It has a cutting blade 12 for cutting the horizontal binding member 2 located on one side 2m of the package 3. The winding device 6 is disposed to face the cutting device 5 with the bread conveyor 4 in between, and includes a forked claw body 13 that is inserted into the binding member 2 and rotates. In order to be able to perform unpacking operations such as cutting and winding the binding member 2 with each of these devices, the package 3 is placed on the bread conveyor 4 so that the binding member 2 is horizontal. ．． The fork-shaped claw body 13 provided on the winding device 6 can be raised or lowered, and the claw bar constituting the fork-shaped claw body l3 can be moved up or down.
When inserted between the package 3 and the binding member 2 and rotating the pronged claw l3, the binding member 2 is wound up by the rotational force. For this purpose, the forked nail body l3
As shown in FIG. 5, there are two or more claw bars 13a, each having a pointed tip and extending downward. 13b
Equipped with Tapered insertion portions 13A are formed at the ends of the claw bars 13a, 13b, so that they can be easily inserted into the binding member 2. As shown in FIG. 6, a lifting cylinder 14 that raises and lowers the fork-shaped claw body 13 to move it away from or approach the package 3, and a motor 15 that winds up the binding member 2 are provided above the unpacking device 1. It is installed at the site. These seven channels are, for example, hydraulic type, and are operated in sequence by automatically opening and closing solenoid valves. The cutting device 5 is for cutting the binding member 2,
The cutting blade l2 is at almost the same height as the package 3, and the binding members 2a to 2d are wound in several layers above and below (see Fig. 2).
can be cut at once. A cutting cylinder 16 is provided for moving the cutting blade 12 forward and backward with respect to the package 3, and the cutting blade 12 is placed at the unpacking position 1 when the package 3 is in the unpacking position.
When it reaches 0, it is controlled to advance. In addition to the above devices, pushing devices 7.7 for moving the package 3 toward the winding device 6 are installed on the left and right sides of the cutting device 5, as shown in FIG. It is provided with a push pad 17.17 approximately equal to the height of the package 3 and is moved by a push cylinder 18.18. On the other hand, on the winding device 6 side, a large number of rollers 19. A package position holding device 8 with l9 is attached. This is also a restraining device that regulates the position of the package 3 when the package 3 is brought closer together on the bread conveyor 4, and as shown in FIG. 7, the roller 19,
A number of holding rods 19A each having a holding rod 19 are provided upright except for the portions where the prongs 13 are located. An eighth binding member 2 is placed in the space 19a between the vertically adjacent rollers 19 and 19.
After the binding member 2 is fitted as shown in the figure and cut, until it is wound up by the pronged claw l3, as shown in FIG.
It also functions to prevent the binding members 2 from hanging down on the other side surface 2n of the package 3, thereby preventing the binding members 2 from becoming entangled with each other. That is, the binding member 2 on the side facing the packaged body position holding device 8 is supported and guided almost horizontally by the rollers 19, 19, and the insertion and winding operations of the fork-like claws 13, which will be described later, are extremely smooth. Become. By the way, the prongs 13 may be located at the center of the package position holding device 8 as shown in FIG. 10, or may be deviated from that position as shown in FIG. ．． Since the holding rod 19A is not provided where the fork-like claw body l3 is located, as described above, care is taken to prevent the cutting blade 12 from moving back and forth at the position facing the fork-like claw body 13. That is, since it is better to have something to support the package 3 from behind in order to cut it, the holding rod 19A is installed at a position opposite to the part where the cutting blade l2 advances. For example, if the cutting blade 12 is located at the center of the package 3 in the front-rear direction as shown in FIG. The large width α of the gap 9a between the other side surface 3n of the unpacking body 3A and the binding member 2, which has been deformed into a substantially fan-like shape due to the release of tension by the binding member 2, does not correspond directly below the pronged claw body 13. Therefore, it is preferable to move the claw body 13 by a distance l shown in FIG. 4 from the position shown by the two-dot chain line, as shown by the broken line, so that the prong 13 is located at the center of the unpacking body 3A. Since the binding member 2 is cut at the center of the package 3, the prongs 13 wind up the binding member 2 of approximately the same length on the left and right sides. On the other hand, as shown in FIG.
If the cutting blade l2 is located at the center in the front-rear direction, the cutting blade l2 is provided at a location away from the opposing position, and the fork-like claw body 13 is located at a location where the gap 9a is wide, and the unpacking body 3A is moved in an inching manner. There is no need to do so. In this case, the forked claw body l3 winds up the binding members 2 having different lengths on the left and right sides. In any case, the necessity of inching the unpacking body 3A is determined by taking into consideration whether the pronged claw body 13 is in a position where it can be easily inserted into the binding member 2. A turntable 20 (see Fig. 1) is installed downstream of the bread conveyor 4, and the waste material 9 is placed on it and distributed and discharged to one of several pulpers (not shown). It is now possible to
On the other hand, the wound binding member 2 is removed from the fork-shaped claw body 13 and transferred to a predetermined position from the shoe 21 directly below (see FIG. 6). As shown, the winding base 2
By expanding and contracting the lifting cylinder 14 attached to 2, the lifting carriage 2 moves along the column 23 erected on the winding base 22.
The structure is such that 4 can be moved. The elevating cart 24 includes a bearing box 2 that supports the fork-like pawl body 13 so that it can rotate.
5 is attached via brackets 26 and 27, and the fork-like pawl body 13 is suspended from the motor 15. Lifting cylinder 14, cutting cylinder 16, pushing cylinder 1
8 and the motor 15 are operated by the hydraulic pump 2 shown in FIG.
The operation is started by pumping hydraulic oil from K1 valves 30A to 30D. The operation of the lifting cylinder 14 is performed by receiving a signal from a limit switch located at the lower end position.
The pushing cylinder l8 receives a signal from a pressure switch 18A provided in its hydraulic circuit, and the operation of the cutting cylinder 16 is controlled by the pressure switch 16A or the limit switch 16.
It receives a signal from B and stops. limit switch 16
As shown in FIG. 12, B is a position regulating member of a certain length that is attached to the blade holding member 12a that holds the cutting blade l2 in order to advance it, and is provided behind one of the push pads 17. It operates when the member 17A hits it. This limit switch 16B and position regulating member 17
A and the pressure switch 16A (see FIG. 11) control the cutting blade advancement regulating means 2B, so that the amount of advancement of the cutting blade 12 that advances further from the front of the push pad 17 toward the package 3 side is always a constant distance 11i. [To regulate the maximum advance position of the cutting blade 12 so that the position is L, and to stop the advance of the cutting blade 12 when it is detected that an excessive cutting force is generated during the advance.] It is now possible to do this. Note that the pressure switch 16A operates when an excessive cutting force is generated before the limit switch 16B operates, and when a pressure increase exceeding a predetermined value is detected, the cutting blade 1
In order to avoid damage to the cutting blade 12, the cutting blade 12 stops advancing. According to the structure described above,
The binding member 2 of the package 3 can be cut and rolled up by operating as follows. The explanation will be made with reference to the flowchart shown in FIG. The transported package 3 is tied up with the binding member 2 and is tied onto the bread conveyor 4. At this time, the package 3 is placed in such a position that its binding member 2 is horizontal. The cutting blade 12 of the cutting device 5 and the pushing pad 17 of the pushing device 1f7 at the unpacking position 10 are retracted from above the bread conveyor 4, and the bun conveyor 4 is moved with the pronged claws 13 of the winding device 6 raised. Driven. When the package 3 reaches the unpacking position lO, the toss inch is operated and the bread conveyor 4 is moved.
will be stopped. The pushing cylinder 18.18 of the pushing device 7 is extended and the pushing pad 17.17 moves the package 3, shown in solid lines in FIG. 1, in the direction of the winding device 6, as shown in broken lines. [Step 1 of the flowchart, hereinafter referred to as 31, etc.]. The packaging body 3 is the rollers 19, 19 of the packaging body position holding device if8.
, an increase in the circuit pressure of the pushing cylinder 18.18 is detected by the pressure switch 18A (32), and the extension of the pushing cylinder 18.18 is stopped (S3). Regardless of whether the width of the package 3 is large or small, the package 3 is always pressed toward the package position holding device 8 on the side where the forked claws 13 of the winding device 6 are located. Therefore, the amount of advance of the push band 17.17, that is, the stopping position thereof, depends on the dimensions of the package 3, the degree of compression of the waste paper 9, and furthermore the binding member 2.
It also depends on the size of the binding force. Shortly before or after the operation of the pushing cylinder 18 is stopped by a signal from the pressure switch 18A, the cutting device 5
The cutting cylinder 16 is extended, and the cutting blade 12 advances into the packed body 3 that has been gathered together (S 4 ) to cut the binding member 2. When the limit switch 16B provided on the cutting device 5 moves forward to the rear end of the position regulating member 17A of a certain length provided behind the pushing pad 17 that has advanced, the limit switch 16B moves to the rear end of the position regulating member 17A.
After receiving the signal, the function position 34a [11th
The solenoid valve 30B (see figure) is returned to neutral, and the extension operation of the cutting cylinder l6 is stopped (S5). The amount of advance of the cutting blade l2 at that time is determined based on the position of the pushing pad 17 that presses the package 3, and the position of the cutting blade 12 is from the front of the pushing pad l7. This is a position that extends a certain distance L toward the package 3 side. The binding member 2 should be cut during the advance, but the pressure switch 16
A operates [S6], and when it is detected that excessive cutting force is being generated, the solenoid valve 30B returns to neutral and the cutting operation is stopped (S7). This occurs when there is a foreign object such as a lump of iron or a concrete block inside the package 3. Therefore, when the cutting blade 12 is advanced until the limit switch is activated, the cutting blade l2
To avoid this, a pressure switch is installed. When the pressure switch is activated, the foreign object acts like a cradle for the cutting blade 12, so the binding member 2 is almost completely cut at that point.
When the limit switch or pressure switch is activated in this way, the pushing cylinder 18 and the cutting cylinder 16 are immediately contracted, and the pushing pad 17 and the cutting blade 12 are moved back [S8 and 9]. The cutting blade 12 and the push pad 17.17 are both moved (
SI0, 11 and 12], for example, the solenoid valve 30B is returned to neutral from its functional position 23 4 b and stopped at a predetermined position [S13 and 14]. The cut portion of the binding member 2 falls apart as shown in FIG. 9, and the package 3 shown by the solid line in FIG. The cut portion of the binding member 2 hangs down on the bun conveyor 4 as shown in FIG. 9, but on the winding device 6 side, the roller 19.
It is maintained in a supported state by l9. On the other hand, since the unpacking body 3A consists of the compressed waste material 9 in a vertical position, it is released from the compressive force by the binding member 2. Binding member 2
The cut side surface 2m (see Fig. 3) is likely to spread, and the other side surface 2n will be less likely to spread due to the package body position holding device 8 and the binding member 2 still wrapped around the package body 3A. As shown in the figure, when viewed from above, the cutting blade 12 deforms into a substantially fan shape.As shown in FIG. Since the shaped claw body 13 is installed at a position slightly away from the center of the unpacking position 10, as shown in FIG. The point where the radius α of the crescent-shaped gap 9a between the bundling member 2 and the bundling member 2 is the largest is not located directly below the pronged claw l3.Therefore, the bread conveyor 4 is driven, and as shown in FIG. The unpacking body 3A is moved by a distance l (S15).Since the amount of positional deviation of the pronged claw body 13 and the cutting blade 12 is known in advance, it is determined that there has been a movement of the corresponding distance l.
When detected by a timer or encoder, the bread conveyor 4 is stopped (S16). As a result, the part where the gap 9a between the binding member 2 and the side surface of the waste bag 9 is large is located directly below the pronged claw body 13. Note that the binding member 2 supported by the packaged body position holding device 8 during the inching
Although the binding member 2 moves, it is guided by the rollers 19, 19, and the posture of the binding member 2 does not change significantly. As shown in FIG. 10, when the cutting blade 12 is located away from the center of the package 3 in the front and back direction at the unpacking position 10, the fork-shaped claw body 13 is provided at the center of the unpacking position f10. , the largest part of the crescent-shaped gap 9a created between the side surface of the unpacking body 3A in which the waste paper 9 has been deformed and the binding member 2 is located directly below the pronged claw l3. Therefore, in this case, there is no need to drive the bread conveyor 4 to move the unpacking body 3A in increments. In the above state, the elevating cylinder 14 is contracted, and the pronged claw l3 is advanced toward the binding member 2 as shown by the solid line in FIG. 14. When it descends to the desired position (S17
), the reduction operation of the lifting cylinder l4 is stopped by the operation of the lift switch (S18), and the pronged claw body l3 is also stopped (S19). At this time, the binding member 2 into which the pronged claw body 13 is inserted is connected to each roller 19 of the package fixed position holding device 8.
．． 19, and there is no problem in inserting the pronged claw body 13. Further, the width of the gap 9a at the position where the prongs 13 descends is wide, so there is no waste paper 9, and the prongs l3 do not tear off pieces of paper during the gap. When the fork-like claw body 13 stops descending, the motor 15 of the winding device 6 is driven, and the fork-like claw body 13 is rotated at high speed for a predetermined period of time (320), as shown in FIG. After winding up the binding member 2 at each position, the winding is stopped (S2
1) During this time, the binding member 2 is guided by the rollers 19, 19, thereby preventing the binding member 2 from bouncing or becoming entangled. If the lengths of the binding members 2 on the left and right sides of the prongs l3 are almost the same [see the three-dot chain line in Figure 4], the winding time is short; If there is a difference in length, it will take a little longer. However, since the winding time itself is short, it does not affect the unpacking of the subsequent package 3. After winding is completed, the elevating cylinder 14 is extended and the pronged claw l3 is retracted to above the unpacking body 3A [S22], and when it reaches the upper limit, the ξ switch is operated [S2
3], the pronged claw l3 is stopped (S24).Although the rollers 19 and 19 are designed to be rotatable so as not to obstruct the removal of the unpacking body 3A, there are particular problems even if they do not rotate. If there is no such device, a fixed disk or the like may be used. It does not matter what shape it is, as long as it can perform the above functions. The binding member 2 wound around the forked claw body 13 becomes a rolled-up lump and is removed. That is, each claw bar 13 of the forked claw body 13
A rotary ring 31 (see FIG. 5), which is rotatable through the windings 13a and 13b, is located within a ring holding portion 33 of an auxiliary frame 32 that projects from the winding base 22 shown in FIG. When the pronged claw body 13 rises, its rotating ring 31
is the shape of the slightly tapered back width of the claw bars 13a, 13b [7th
(see figure)], remove the rolled up lump from the prongs 13 by squeezing it off. The fallen rolled chunks are separately transported to the disposal site through chute 21 (see Figure 6). In the explanation of the above example, the limit switch 16B of the cutting blade advancement regulating means 28 is moved together with the cutting blade 12, but the limit switch 16B is moved to the back of the push pad l7, and the position regulating member 17A is advanced. Even if it is attached to the blade holding member 12a of the cutting blade 12,
Needless to say, it functions in the same way. Further, the cutting blade advancement regulating means 28 also includes a pressure switch 16A, but if there is no foreign matter mixed in the package 3,
It can be operated even if only Q'/to switch 16B is used. As can be seen from the above example, if the cutting blade is set at a certain distance from the front of the push pad with which the package is brought together, the width of the package and the binding force of the binding member will be affected. Even if there is a difference, the binding member can be cut reliably. Then, before inserting the fork-shaped claw body into the binding member of the package on the conveyance device, by cutting the binding member on the opposite side from the fork-like claw body, the unpacked waste paper is shaped like a fan. It can be transformed into. As a result, a gap can be secured between the unpacking body and the binding member, making it extremely easy to insert the prongs. This prevents the prongs from piercing waste paper or getting paper pieces involved during rotation. On the other hand, if the cutting blade hits a foreign object inside the package, a pressure switch can be installed to maintain smooth operation of the unpacking device without forcing the cutting blade to advance.

[Brief explanation of drawings]

FIG. 1 is a plan view of an example of an unpacking device to which the present invention is applied;
Figure 2 is a perspective view of the package bound with binding members, and Figure 3 is the deformed state of the waste paper when the package is unpacked, and a plan view of the unpacked body when the cutting blade is in the center position. , FIG. 4 is a schematic plan view when the unpacking body is inched, FIG. 5 is a schematic external view of the pronged claw body, FIG. 6 is a front view of the unpacking device, and FIG. Fig. 8 is a schematic diagram showing a state in which the package is brought together by the packing body fixed position holding device, and Fig. 9 is a diagram showing the state in which the binding member of the packed body that has been brought together is cut. The state diagram immediately after, Figure 10 is a plan explanatory diagram when there is no need to move the unpacking body, Figure 1l is an example of a hydraulic circuit that operates an actuator such as a cutting cylinder, and Figure 12 is a position regulating member. FIG. 13 is a flowchart of the phase opening procedure including the operation of the present invention, FIG. 14 is an explanatory diagram of the state in which the prongs are inserted into the binding member, and FIG. 15 is an illustration of the prongs being inserted into the binding member. is a state diagram in which the binding member is wound up. 2.2a to 2d-binding member, 3-packing body, 4--conveying device (bread conveyor), 5--cutting device, 6--winding device, 7--pushing device, 8--packing body position holding device,
9 - Waste paper, 12 - Cutting blade, l3 - Forked claw body, 16A - Pressure switch, 16B - Limit switch, l7 - Push pad, 17A - Position regulating member, 2
8. Cutting blade advance control means.

Claims (1)

[Claims] (1) After the package in which the waste paper is bound with a binding member is moved to a fixed position on the conveyor by a pushing device, the fork-like claws of the winding device are inserted into the binding member and rotated. An unpacking device for a package that winds up a binding member by means of a pushing pad of the pushing device that moves the package widthwise until it hits a package position holding device, and an advancing direction of the pushing pad. A cutting blade of a cutting device advances in the same direction to cut the binding member located on the opposite side of the package body position holding device, and a cutting blade advances further toward the package side from the front surface of the push pad. A package characterized by comprising: a cutting blade advancement regulating means capable of regulating the maximum advancement position of the cutting blade and stopping advancement of the cutting blade so that the amount is always constant. Pushing/cutting mechanism in unpacking equipment.