JP2010207690A - Bag tearing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag tearing apparatus capable of remarkably improving a bag tearing rate, reducing contents remaining inside a packaging material after tearing a bag, surely sorting the packaging material and the contents, and demonstrating a large effect in work reduction of foreign matter treatment and winding prevention. <P>SOLUTION: The bag tearing apparatus S includes: a supply port 2 for supplying waste G; a feed rotor 4 provided with a shaft member 14 and a feed blade 16 and disposed at the lower part of the supply port 2; a bag tearing rotor 8 disposed at the oblique upper part of the feed rotor 4 such that a rotation track R2 partially overlaps with a rotation track R1, for breaking the packaging material G2; a takeout rotor 19 disposed at the oblique lower part of the feed rotor 4 such that a rotation track R3 partially overlaps with the rotation track R1, for taking out the contents G1 from the packaging material G2; a guide plate 6; and a driving motor M for rotationally driving the rotors 4, 8 and 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bag-breaking device, and more particularly to a bag-breaking device that efficiently ruptures / removes waste packaging material and takes out contents by using a plurality of rotating shafts.

  2. Description of the Related Art Conventionally, a bag breaking device that breaks a packaging material of bagged waste is known. For example, in Patent Document 1, cutters for breaking bags are arranged in rows by moving claws provided on an endless conveyor and fixed blades provided on a plate, and the packaging material is broken by rotating the conveyor. An apparatus is disclosed.

  Patent Document 2 discloses an apparatus for breaking a waste packaging material by a cutter and a fixed blade that are pivotably rotated. In these apparatuses, waste packaging materials are torn by relative movement between a rotating or moving cutter (or moving claw) and a fixed blade. Then, the packaging material is removed from the waste, and the contents can be selected from the packaging material.

JP 2000-317337 A JP 2008-68249 A

  However, the one disclosed in Patent Document 1 breaks a bag by driving an endless conveyor, and the structure becomes complicated and large. As a result, the cost of the apparatus is inevitably high. Moreover, since the thing disclosed by the said patent documents 1 and 2 performs a bag breaking by the relative movement of a fixed blade and a cutter (or moving claw), there is little opportunity of the bag breaking with respect to one waste, and sufficient bag breaking It is difficult to obtain the rate (the ratio of the number of wastes in which the packaging material is broken out of the number of wastes input). Although the packaging material is broken, many of the contents remain so as to be caught inside the broken packaging material, and it is necessary to manually separate the contents from the packaging material after discharging.

  In addition, the bag breaking apparatus assumes that wastes having a particle size and weight that can be predicted to some extent, such as garbage, are treated as waste, which are contained in a packaging material such as a garbage bag. Therefore, for example, processing of a relatively large particle size, such as a microwave oven, and heavy household electrical appliances is not assumed, but if such a thing is thrown into the apparatus, it must be removed as a foreign object. .

  However, in the conventional apparatus, removal of these foreign matters has to be performed manually by workers, and the work is complicated and there is a concern in terms of safety. Even when a part of the waste is wound around the rotary shaft or the cutter, it has to be frequently removed manually, which is difficult.

  The present invention has been made in view of the above circumstances, and significantly improves the bag breaking rate, reduces the content remaining inside the packaging material after the bag breaking, and separates the packaging material from the content. It is an exemplary problem to provide a bag breaking device that can be reliably performed and that exerts a great effect in reducing foreign matter processing and preventing wrapping.

  In order to solve the above-mentioned problems, a bag breaking apparatus as an exemplary aspect of the present invention breaks a packaging material of waste configured by enclosing the contents in a packaging material, and the contents are externally provided from the packaging material. A bag breaker that takes out waste and is disposed below the charging port with a shaft member and a feed blade projecting substantially radially from the shaft member. A feed rotor that feeds the waste toward the discharge port by rotation of the feed blade, a shaft member and a bag breaking blade that protrudes substantially radially from the shaft member, and the bag breaking blade obliquely above the feed rotor The rotor breakage rotor is arranged so that its rotation locus partially overlaps with the rotation locus of the feed blade, and a shaft member and a takeout blade that protrudes substantially radially from the shaft member, and obliquely below the feed rotor And take out the A take-out rotor disposed so that a rotation trajectory of the blade partially overlaps with a rotation trajectory of the feed blade, and one or a plurality of drive sources that rotationally drive the feed rotor, the bag breaking rotor, and the take-out rotor. It is characterized by.

  Since the bag breaking process is performed by the rotation of the feed rotor and the rotation of the bag breaking rotor, the chance of contact of the bag breaking blade with one waste can be greatly increased. If the rotation direction of the feed rotor and the rotation direction of the bag breaking rotor are reversed, the relative speed between the feed blade and the bag breaking blade can be increased. Therefore, the bag breaking rate can be greatly improved by the synergistic effect of the relative speed improvement and the increase of the tearing opportunity.

  Moreover, according to the present invention, the take-out rotor is also arranged obliquely below the feed rotor. This take-out rotor breaks the packaging material that could not be broken by the broken bag rotor, breaks the broken bag when the contents packed in the smaller bag are contained in the packaging material, and the packaging material after the broken bag The function of flipping out (removing) the contents from the machine is demonstrated. Therefore, by making the rotation direction of the take-out rotor opposite to the rotation direction of the feed rotor, the relative speed between the take-out blade and the feed blade can be improved, and the chance of contact of the take-out rotor with respect to one waste can be improved. . As a result, it is possible to further improve the bag breaking rate, improve the bag breaking rate, and reliably separate the packaging material from the contents.

  In the bag breaking apparatus, it is desirable that the overlapping dimension between the rotation trajectory of the feeding blade and the rotation trajectory of the bag breaking blade is 20 mm or more and 60 mm or less. Further, it is desirable that the overlapping dimension between the rotation trajectory of the feed blade and the take-out blade is 40 mm or more and 160 mm or less.

  If there is too little overlap between the rotation trajectory of the feed blade and the rotation trajectory of the bag breaker blade or the takeout blade, the bag breakage rate of the packaging material or the bag breakage rate of the sachet will decrease, and the unraveling rate Of the number of items, the ratio of the number of wastes from which the contents and the packaging material are separated also decreases.

  On the other hand, if the overlap between the blades is too large, the required power by the drive source increases, leading to an increase in power consumption. In addition, the biting of waste into the blade also increases, leading to an increase in the load on the drive source. There is an appropriate range for the overlap between the feed blade and the bag breaking blade and the overlap between the feed blade and the take-out blade, and setting within the appropriate range is desirable for improving the processing efficiency and reducing the load on the drive source. In the present invention, by setting the overlapping dimension between the rotation trajectory of the feeding blade and the rotation trajectory of the bag breaking blade to 20 mm or more and 60 mm or less, a high bag breaking rate, a high unraveling rate, and a load of the driving source are set. Reduction (including power consumption reduction) can be realized.

  As described above, it is desirable that the overlapping dimension between the rotation locus of the feeding blade and the rotation locus of the bag breaking blade and the overlapping dimension between the rotation locus of the feeding blade and the rotation locus of the take-out blade are different dimensions. . More specifically, it is desirable that the overlap dimension between the rotation trajectory of the feed blade and the rotation trajectory of the take-out blade is larger than the overlap dimension between the rotation trajectory of the feed blade and the rotation trajectory of the bag breaking blade. By doing so, both the breakage rotor for which the breakage of the packaging material is the main purpose and the takeout rotor for the purpose of breaking the small bag and taking out the contents in addition to the breakage of the packaging material perform well. be able to.

  The main purpose of the take-out rotor is to reliably eject the contents from the packaging material after bag breakage. Therefore, the appropriate range of overlap between the rotation trajectory of the feed blade and the rotation trajectory of the take-out blade is larger than the proper overlap range of the feed blade and the bag breaking blade as a whole, and is 40 mm or more and 160 mm or less. ing.

  In the bag breaking apparatus, it is desirable that the ratio of the rotation speed of the bag breaking rotor to the rotation speed of the feed rotor is 20 times or more and 40 times or less.

  In order to increase the chance of breaking the packaging material, it is desirable to increase the rotational speed of the bag breaking rotor relative to the rotational speed of the feed rotor. On the other hand, if the rotational speed of the bag breaking rotor is excessive, it is not desirable in terms of power consumption and load of the drive source, and there is an appropriate range. In the present invention, by setting the ratio of the rotational speed of the bag breaking rotor to the rotational speed of the feed rotor to be 20 times or more and 40 times or less, a high bag breaking rate and a reduction in load on the driving source can be realized. Note that the ratio of the rotational speed of the take-out rotor to the rotational speed of the feed rotor is also set to 20 times or more and 40 times or less, so that a high unraveling rate and a reduction in the load on the drive source can be realized.

  It is desirable that at least one of the feed rotor, the bag breaking rotor, and the take-out rotor has a polygonal portion having a non-circular shape in which the cross-sectional shape in the plane perpendicular to the axis has at least three apex angles.

  When the rotary shaft type is adopted, long wastes, packaging materials after bag breaking, etc. are easily wound around the shaft member. Further, the wound long waste and the packaging material generate a tensile stress uniformly in the circumferential direction, and the tensile stress generates a uniform clamping force toward the center of the circle. Therefore, the long waste once wound is maintained in a stable winding state due to the stress acting evenly in a balanced manner, and is not easily removed from the shaft member.

  However, the winding of the collection bag around the shaft can be reduced by increasing the diameter of the shaft member and making the shaft circumferential length longer than the general collection bag length. Further, even if it is wound, the tensile stress is not uniform, and the tensile stress is unbalanced between the apex angle portion and the side portion, and it is difficult to stably maintain the wound state. Therefore, it can be easily removed from the shaft member.

  More specifically, by increasing the diameter of the shaft member, the wrapping of the packaging material mainly on the shaft member can be reduced, and the packaging material that has been wound by having the polygonal portion of the shaft member. The falling off of the shaft member can be promoted. For example, if the diameter of the shaft member is φ ≧ 270 mm, generally used packaging materials such as garbage bags do not reach the entire circumference of the shaft member, and the packaging material wraps around the entire circumference of the shaft member. Can be prevented. Therefore, it is difficult to wrap the packaging material around the shaft member.

  On the other hand, if the shaft member has a polygonal shape, an unbalance of tensile stress occurs, so even if the packaging material is wrapped, it can be easily wrapped due to the influence of disturbance (for example, rotation stop or reverse rotation). The material falls off the shaft member. As a result, the wrapped packaging material is prevented from gradually accumulating.

  It is desirable to further include a winding detection means for detecting the winding thickness of the waste around the shaft member, and a control means for controlling the drive source in accordance with the output from the winding detection means.

  If a large amount of long waste or the like is wound around the shaft member, an overload is applied to the drive source, which may cause the drive source to stop rotating or cause problems such as overcurrent. In addition, the bag breaking process is adversely affected, leading to a decrease in the bag breaking rate and the unraveling rate. The inconvenience as described above can be avoided by detecting the winding of the long waste around the shaft member by the winding detecting means and controlling the drive source according to the detection result.

  Here, the winding detection means may be applied to, for example, a non-contact type light emitting / receiving sensor that detects that the apparent radius of the shaft member (the apparent radius increases due to winding) or a certain value or a shaft member. A combination of a detection rod that is biased and a position sensor that detects an angular position of the detection rod can be applied. Further, the control of the drive source by the control means includes, for example, deceleration control for decelerating the rotation speed, reverse rotation control for reverse rotation, and the like.

  The upper part slit that penetrates the broken bag blade to the feed rotor side and the lower slit that penetrates the takeout blade to the feed rotor side are formed while substantially shielding between the bag breaking rotor and the takeout rotor and the feed rotor, In addition, it is desirable to further include a guide plate in which the gap in the axial direction between the lower slit and the take-out blade is larger than the gap in the axial direction between the upper slit and the bag breaking blade.

  The thrown-in waste is smoothly guided to the discharge port so as to be sandwiched between the feed blade and the guide plate. Since it is guided so as to be sandwiched between the feed blade and the guide plate, it is possible to prevent the waste from escaping and to reliably generate a shearing force on the waste.

  Further, the gap in the lower slit is formed larger than the gap in the upper slit of the guide plate. On the side where the bag breaking rotor and take-out rotor are arranged with respect to the guide plate, the purpose is mainly to take out the packaging material such as the collection bag after the bag breaking. Therefore, on the side where the feed rotor is disposed with respect to the guide plate, there are many remaining contents from which the packaging material has been removed. This content is more present in the vicinity of the lower slit side than the upper slit side. Therefore, if the gap in the lower slit is small, the gap is filled with much content. As a result, the take-out blade may be caught and cause malfunction or failure. However, in the present invention, since the gap in the lower slit is increased, clogging of the contents into the slit is prevented.

  In addition, the packaging material which passed through these upper slits and lower slits and was ruptured from the feed rotor side to the rupture rotor side and those smaller than each slit width are drawn out. As a result, the contents can be efficiently separated from the feed rotor side of the guide plate, the packaging material and those having a width smaller than each slit width from the bag breaking rotor side.

  The foreign matter detection means for detecting the introduction of foreign matter from the entry port, the control means for controlling the reverse rotation of the drive source according to the output from the foreign matter detection means, and the discharge port for discharging foreign matter by the reverse rotation of the feed rotor are different. It is desirable to further have a foreign matter outlet.

  When foreign matter is introduced from the insertion port, it is not necessary to manually take out the foreign matter manually, and can be automatically discharged from the foreign matter discharge port. Here, for example, an ammeter that detects a current abnormality (overcurrent) of the drive source can be applied to the foreign matter detection means. When foreign matter such as a large household appliance is thrown in and the feed rotor is stopped, the foreign matter can be detected by detecting an overcurrent.

  When foreign matter is detected, by rotating the feed rotor in reverse, the foreign matter can be smoothly discharged from the foreign matter discharge port different from the normal discharge port. It can be done reliably.

  Further objects and other features of the present invention will become apparent from the preferred embodiments described below with reference to the accompanying drawings.

  According to the present invention, it is possible to realize an improvement in the rate of breakage of a packaging material or a sachet and an improvement in the tear rate. In addition, by preventing wrapping around the rotating shaft and smoothly discharging when foreign matter is charged, it is possible to improve the efficiency of the bag-breaking process, ensure the durability and reliability of the device, and ensure the safety of workers. be able to.

It is a structural diagram which shows the outline of the internal structure of the bag breaking apparatus which concerns on Embodiment 1 of this invention. It is an external appearance perspective view which shows the outline of the feed rotor shown in FIG. It is a front view of the guide plate shown in FIG. It is sectional drawing in the axis orthogonal surface of the shaft member of a feed rotor. It is a two-plane figure which shows schematic shape of the bag breakage blade shown in FIG. It is a double view which shows the other example of a bag breaking blade. It is a structural diagram which shows the outline of the internal structure of the bag breaking apparatus which concerns on Embodiment 2 of this invention. It is a structural diagram which shows the outline of the internal structure of the bag breaking apparatus which concerns on Embodiment 3 of this invention. It is a front view of the guide guide plate shown in FIG. In Example 1 of this invention, it is a graph which shows the relationship between the ratio of the rotation speed of a bag breaking rotor with respect to the rotation speed of a feed rotor, a bag breaking rate, and a dissolution rate. In Example 2 of this invention, it is a graph which shows the relationship between the overlap dimension in the rotation center of the rotation locus | trajectory of a feed blade, and the rotation locus | trajectory of a bag breaking blade, and a bag breaking rate. In Example 3 of this invention, it is a graph which shows the relationship between the overlap dimension between the rotation centers of the rotation locus | trajectory of a sending blade, and the rotation locus | trajectory of a taking-out blade, and a bag breaking rate.

[Embodiment 1]
A bag breaking device S according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a structural diagram showing an outline of the internal structure of the bag breaking apparatus S according to the first embodiment of the present invention. FIG. 1 is a view of the inside of the bag breaking apparatus S as viewed from the side. The bag breaking device S has a substantially cubic shape as a whole, and includes an inlet 2, a feed rotor 4, a guide plate 6, a bag breaking rotor 8, a takeout rotor 10, a discharge port 12, a drive motor (drive source) M, and a control device. (Control means) It is comprised roughly with C.

  The input port 2 is an opening for introducing the waste G into the bag breaking apparatus S, and is formed in the upper part of the bag breaking apparatus S. The waste G is, for example, a content G1 such as paper waste, a plastic container, a can, or the like, and a packaging material G2 such as a plastic garbage bag on the outside. The waste G may contain the contents G1 packaged in a sachet inside the packaging material G2, and this bag breaking device S is not only the outer packaging material G2, but also the sachet inside the packaging material G2. Must be broken. The waste G input from the input port 2 falls to the feed rotor 4 disposed below the waste G.

  The feed rotor 4 is a rotating member for sending waste that has fallen from the inlet 2 to the outlet 12. The feed rotor 4 includes a shaft member 14 whose axial direction is the direction perpendicular to the paper surface in FIG. 1 and a feed blade 16 attached to the shaft member 14 and projecting substantially radially. FIG. 2 is an external perspective view showing the outline of the feed rotor 4. Three feed blades 16 are attached in a set substantially radially, and the set is arranged at equal intervals in the axial direction of the shaft member 14.

  The feed rotor 4 rotates in the direction of arrow X in the figure, and sends the waste G that has fallen from the inlet 2 to the outlet 12 while being sandwiched between the feed blade 16 and the guide plate 6. During the delivery process, the packaging material G2 is broken by the guide plate 6, the bag breaking rotor 8 and the take-out rotor 10, and the contents G1 are ejected from the packaging material G2.

  The guide plate 6 is a plate extending in the axial direction inside the bag breaking device S, fixes the waste G pulled by the bag breaking rotor 8 and the take-out rotor 10, generates a breaking action, and introduces the inlet 2. It is a guide member that forms a guide path that guides the waste G that has been introduced to the discharge port 12. The guide plate 6 substantially shields between the side on which the feed rotor 4 is arranged and the side on which the bag breaking rotor 8 and the take-out rotor 10 are arranged, and the contents G1 having a large waste G are contained in the bag breaking rotor. It is prevented from getting mixed into the 8th side.

  FIG. 3 is a front view of the guide plate 6. The direction perpendicular to the plane of the paper (axial direction) in FIG. 1 is the arrow Y direction in FIG. An upper slit 6 a is formed on the upper side of the guide plate 6 so as to correspond to the arrangement position of the bag breaking blade 18. The upper slit 6a is formed in a substantially rectangular shape and allows the bag breaking blade 18 to pass therethrough. Due to the formation of the upper slit 6a, the bag breaking blade 18 enters the feed rotor 4 side so that the rotation trajectory and the rotation trajectory of the feed blade 16 can overlap.

  The axial dimension (width dimension) of the upper slit 6 a is formed slightly larger than the axial dimension (thickness dimension) of the bag breaking blade 18. For example, the upper slit 6 a has a thickness of 9 mm. The width dimension of 6a is set to 30 mm or more and 100 mm or less. From the gap between the upper slit 6a and the bag breaking blade 18, the packaging material G2 after the bag breaking is drawn out by the bag breaking blade 18 from the feed rotor 4 side to the bag breaking rotor 8 side. Therefore, the large contents G1 and the packaging material G2 such that the contents G1 larger than the slits 6a on the feed rotor 4 side and the packaging materials G2 and the contents smaller than the slits 6a on the bag breaking rotor 8 side are sandwiched between the guide plates 6. In addition, separation from small contents is performed.

  A lower slit 6 b is formed on the lower side of the guide plate 6 so as to correspond to the arrangement position of the take-out blade 20. The lower slit 6b is also formed in a substantially rectangular shape and allows the take-out blade 20 to pass therethrough. With the formation of the lower slit 6b, the take-out blade 20 enters the feed rotor 4 side so that the rotation locus and the rotation locus of the feed blade 16 can overlap.

  The gap between the width dimension of the lower slit 6 b and the thickness dimension of the take-out blade 20 is formed larger than the gap between the width dimension of the upper slit 6 a and the thickness dimension of the bag breaking blade 18. More specifically, when the thickness of the take-out blade 20 is 9 mm, which is the same as the thickness of the bag breaking blade 18, the width dimension of the lower slit 6b is set to 80 mm or more and 150 mm or less.

  In the vicinity of the lower slit 6b, the content G1 is ejected by the take-out blade 20, and the content G1 and its pulverized material are scattered in the vicinity. Therefore, if the gap between the lower slit 6b and the take-out blade 20 is as small as the gap in the upper slit 6a, the contents G1 and the pulverized product are caught in the gap, causing problems such as abnormal stopping of the bag breaking device S. End up. Therefore, in the lower slit 6b, a gap is set larger than that in the upper slit 6a, thereby preventing a problem with the bag breaking device S. Note that the packaging material G2 remaining on the feed rotor 4 side is also drawn out to the take-out rotor 10 side by the take-out blade 20 from the gap between the lower slit 6b and the take-out blade 20.

  The breaking of the packaging material G2 is mainly performed based on the following principle. That is, the waste G is substantially fixed by being sandwiched between the feed rotor 4 and the guide plate 6, and the bag breaking blade 18 and the take-out blade 20 are stuck into the waste G. Then, the rotation of the blades 18 and 20 causes a shearing force between the blades 18 and 20 and the slits 6a and 6b, and the packaging material G2 is torn while the contents G1 are ejected from the packaging material G2. Since the torn packaging material G2 is stuck in the blades 18 and 20, it passes through the slits 6a and 6b as it is and is dragged out to the side where the bag breaking rotor 8 and the take-out rotor 10 are arranged.

  As shown in FIGS. 2 and 4, the shaft member 14 of the feed rotor 4 has a polygonal portion 14 a having a non-circular cross section in the plane orthogonal to the axial direction. The diameter of the virtual circle J connecting the apex angles k of the polygonal portion 14a is desirably a large diameter of φ270 mm or more, more preferably φ340 mm or more, and even more preferably φ460 mm or more.

  Not only is the diameter large, but the cross-sectional shape is a polygonal shape having apex angle k. Therefore, even when packaging material G2 after bag breakage or a long waste is wrapped around, the tensile stress is increased. It is easy to come off due to the balance. Therefore, winding of the long waste etc. to the shaft member 14 is prevented or reduced.

  The bag breaking rotor 8 is a rotating member for breaking the packaging material G2 of the waste G. 1 includes a shaft member 22 whose axial direction is the direction perpendicular to the paper surface in FIG. 1 and a bag breaking blade 18 attached to the shaft member 22 and projecting substantially radially, and rotates in the direction of arrow Z in the drawing. In the bag breaking rotor 8, four sets of four bag breaking blades 18 are attached to the shaft member 22 in a substantially radial manner, and the one set is arranged at equal intervals in the axial direction of the shaft member 22. Note that the bag breaking blade 18 and the feeding blade 16 are arranged so as to be displaced in the axial direction so as not to interfere with each other, and are arranged in a so-called nested manner.

  FIG. 5 is a two-side view showing a schematic shape of the bag breaking blade 18. The bag breaking blade 18 has a claw portion 18a for breaking the packaging material G2 at its tip. The bisector L at the apex angle of the claw portion 18a is inclined outward by an angle θ from the tangential direction L2 in the claw portion 18a of the rotation locus R1 of the bag breaking blade 18. By setting the angle θ, the claw portion 18a is set to face in the outer circumferential direction. Accordingly, the packaging material G2 in the state of being stabbed into the claw portion 18a is capable of rotating the bag breaking blade 18 while sufficiently achieving the function of piercing the packaging material G2 by the claw portion 18a and dragging the packaging material G2 through the upper slit 6a. It comes to drop out easily with.

  Even when the bag breaking blade 18 has a shape that does not have a protruding portion at its tip as shown in FIG. 6, the apex angle of the blade 18 functions as the claw portion 18a. The apex bisector L as the claw portion 18a only needs to be inclined outward by an angle θ from the tangential direction L2 in the claw portion 18a of the rotation locus R1 of the bag breaking blade 18.

  The rotation trajectory R1 of the bag breaking blade 18 and the rotation trajectory R2 of the feed blade 16 partially overlap as shown in FIG. 1, and the overlap dimension W1 between the centers is preferably 20 mm or more and 60 mm or less, More desirably, it is set to 30 mm or more and 50 mm or less. Thereby, the packaging material G2 is surely broken, and the contents G1 and the pulverized material are prevented from being caught carelessly.

  Further, the rotational speed of the bag breaking rotor 8 is set to be considerably higher than the rotational speed of the feed rotor 4, desirably 20 times or more and 40 times or less, more desirably 25 times or more and 35 times the revolution number of the feed rotor 4. It is set as follows. For example, with respect to the rotation speed of the feed rotor 4: 4.3 rpm, the rotation speed of the bag breaking rotor 8 is set to 150 rpm. While the waste G is fed by the feed rotor 4, it is possible to provide an opportunity for contact with a large number of bag breaking blades 18. Therefore, reliable bag breaking can be realized.

  The take-out rotor 10 is also intended to break the remaining packaging material G2 that has not been broken by the bag breaking rotor 8, or to break the sachets in the packaging material G2. In addition, the packaging material G2 after the bag breaking It is a rotating member whose main purpose is to flip (take out) the contents G1 from the main body. In addition, one of the purposes is to take out the packaging material G2 and the sachet after bag breaking through the lower slit 6b and separate them to the rotor 10 side. 1 includes a shaft member 26 whose axial direction is the direction perpendicular to the paper surface in FIG. 1 and a takeout blade 20 attached to the shaft member 26 and projecting substantially radially, and is rotated in the direction of arrow Z in the drawing. As in the case of the bag breaking rotor 8, in the take-out rotor 10, four take-out blades 20 are attached to the shaft member 26 in a substantially radial manner, and one set is arranged at equal intervals in the axial direction of the shaft member 26. Has been. The take-out blade 20 is arranged so as to be displaced in the axial direction so as not to interfere with the feed blade 16 and the bag breaking blade 18, and is arranged in a so-called nested manner. The outline shape of the take-out blade 20 is substantially the same as that of the bag breaking blade 18 shown in FIG.

  The rotation locus R3 of the take-out blade 20 and the rotation locus R2 of the feed blade 16 partially overlap as shown in FIG. 1, and the overlap dimension W2 between the centers is preferably 40 mm or more and 160 mm or less. Desirably, it is set to 60 mm or more and 140 mm or less. Thereby, reliable ejection of the contents G1 from the packaging material G2 is realized.

  Further, the rotational speed of the take-out rotor 10 is preferably set to 20 times or more and 40 times or less, more preferably 25 times or more and 35 times or less of the rotational speed of the feed rotor 4 as in the case of the bag breaking rotor 8. ing. For example, with respect to the rotation speed of the feed rotor 4: 4.3 rpm, the rotation speed of the take-out rotor 10 is set to 150 rpm. While the waste G is fed by the feed rotor 4, it is possible to give a lot of contact opportunities with the take-out blade 20, and the unraveling rate is improved by the reliable ejection of the contents G1. Moreover, it has contributed also to the bag breakage rate improvement of the small bag inside packaging material G2.

  The discharge port 12 is an opening that is disposed below the feed rotor 4 and discharges the waste G fed by the feed rotor 4 to the outside of the bag breaking device S. Since most of the packaging material G2 is drawn out to the bag breaking rotor 8 side of the guide plate 6 by the functions of the bag breaking rotor 8 and the take-out rotor 10, most of the waste G discharged from the discharge port 12 is Content G1.

  The drive motor M is a drive source for rotationally driving the feed rotor 4, the bag breaking rotor 8 and the take-out rotor 10, and its operation is controlled by the control device C. All of the three rotors 4, 8, and 10 may be rotationally driven by one drive motor M, or the three drive motors M1 to M3 may rotationally drive the three rotors 4, 8, and 10, respectively.

  An ammeter (foreign matter detecting means) P for detecting the drive current is connected to the drive motor M1 that rotationally drives the feed rotor 4. This ammeter P detects an excessive current to the drive motor M1 and transmits an abnormal signal to the control device C when the feed rotor 4 becomes unable to rotate due to foreign matter being inserted into the insertion port 2 or the like. It has the function to do.

  The control device C that has received the abnormal signal promptly stops the rotational drive of the drive motor M1, and then rotationally drives the drive motor M1 in the reverse direction at a low speed. As a result, the feed rotor 4 rotates in the direction opposite to the arrow X so that the introduced foreign matter or the like is discharged out of the bag breaking device S from the foreign matter discharge port 30 formed separately from the discharge port 12. It has become. The guide guide plate 32 that guides the foreign matter to the foreign matter discharge port 30 is arranged to extend from the vicinity of the outer periphery of the shaft member 14 of the feed rotor 4 to the foreign matter discharge port 30 so as to smoothly guide the foreign matter to the foreign matter discharge port 30. ing. The guide guide plate 32 exhibits a function as a scraper in the vicinity of the shaft member 14. That is, the one end 32a of the guide guide plate 32 is fixed at a radial position that is a predetermined distance away from the outer diameter of the shaft member 14, and the winding of the long waste or the like around the shaft member 14 becomes a certain level or more. Is preventing.

[Embodiment 2]
FIG. 7 is a structural diagram showing an outline of the internal structure of the bag breaking apparatus S according to the second embodiment of the present invention. The bag breaking device S includes a light projecting / receiving sensor (winding detecting means) 40 that projects and detects detection light in the axial direction in the vicinity of the shaft member 14 of the feed rotor 4. This detection light detects that the winding of the long waste or the like around the shaft member 14 does not exceed a certain thickness at a position that is a certain distance ra away from the rotation center of the feed rotor 4 in the radial direction.

  When the winding of the long waste or the like is more than a certain thickness and the detection light is blocked, the light projecting / receiving sensor 40 transmits a notification signal to the control device C. When the control device C receives the notification signal, the control device C controls blinking of a warning lamp (not shown) arranged on the outer wall of the casing of the bag breaking device S, so that the winding thickness of the long waste or the like becomes a certain level or more. Notify that the processing efficiency is decreasing. Of course, the light projecting / receiving sensor 40 transmits a deceleration signal or a stop signal together with the notification signal to the control device C, and the control device C decelerates / decelerates the drive motor M1 that rotationally drives the feed rotor 4 based on the deceleration signal or the stop signal. You may come to stop.

[Embodiment 3]
FIG. 8 is a structural diagram showing an outline of the internal structure of the bag breaking apparatus S according to the third embodiment of the present invention. The bag-breaking device S has a self-cleaning function, and based on this self-cleaning function, it is possible to remove the packaging material G2 and the like wound around the shaft members 14, 22, and 26. The self-cleaning function is realized by a reciprocating swinging operation of the guide guide plate 32, scrapers 33 and 34, and the opening / closing door 35 and forward / reverse rotation operations of the feed rotor 4, the bag breaking rotor 8 and the take-out rotor 10 described below.

  The bag-breaking device S has a movable guide guide plate 32 and scrapers 33 and 34, and these guide guide plate 32 and scrapers 33 and 34 are reciprocally swung by drive motors M4 to M6, respectively. It is configured. The scrapers 33 and 34 are for removing wound items such as the packaging material G2 from the shaft member 22 of the bag breaking rotor 8 and the shaft member 26 of the take-out rotor 10, respectively.

  Further, a movable opening / closing door 35 is provided in the vicinity of the foreign matter discharge port 30, and this opening / closing door 35 is reciprocally driven by a drive motor M7. The operation of the drive motors M4 to M7 and the drive motors M1 to M3 is controlled by the control means C (rotation / stop, rotation speed, rotation direction, etc.).

  During the normal bag breaking process, the guide guide plate 32, the scrapers 33 and 34, and the open / close door 35 are in the retracted position (two-dot chain line portion in FIG. 8). However, when the self-cleaning mode is set, the drive motors M4 to M7 swing the guide guide plate 32, the scrapers 33 and 34, and the open / close door 35 in the α direction, and the cleaning position (solid line portion in FIG. 8). To be located. As a result, it is possible to remove the packaging material G2 and the like around which the guide guide plate 32 and the scrapers 33, 34 are wound around the shaft members 14, 22, 26.

  When the guide guide plate 32 is viewed from the front direction (the direction from the left to the right in FIG. 8), it has a shape as shown in FIG. The notch 32b of the guide guide plate 32 avoids interference with the feed blade 16, and the tip (one end) 32a exhibits a function of removing a wound material such as the packaging material G2 wound around the shaft member 14. . The external shapes of the scrapers 33 and 34 are substantially the same as those of the guide guide plate 32. The guide guide plate 32 and the open / close door 35 cooperate to close the foreign matter outlet 30 during the bag breaking process. In the cleaning mode, the foreign matter discharge port 30 is opened on the side surface of the bag breaking device S by operating the guide guide plate 32 and the opening / closing door 35.

  This cleaning mode may function by pressing a cleaning button (not shown) disposed in the bag breaking device S, or may be performed for every certain period of bag breaking processing operation, It may be performed by detecting deposition.

  Next, a cleaning operation based on forward / reverse rotation control of the feed rotor 4, the bag breaking rotor 8, and the take-out rotor 10 will be described.

  The cleaning mode is set and the cleaning process is started based on the detection of the pressing of the cleaning button, the bag breakage processing operation for a certain period of time, or the detection of the accumulation of a certain amount of wrapping material. In the cleaning process, the drive motors M1 to M3 are temporarily stopped, and the feed rotor 4, the bag breaking rotor 8, and the take-out rotor 10 stop rotating.

  Thereafter, the drive motors M <b> 1 to M <b> 3 are rotationally driven based on any of the operation patterns shown below to rotate the feed rotor 4 and / or the bag breaking rotor 8 and / or the take-out rotor 10. Thereby, the wrapping material such as the packaging material G2 wound around the shaft members 14, 22, and 26 is smoothly removed, and the amount of wrapping accumulation is reduced. In Tables 1 to 3, the positive rotation direction means the same direction as the rotation direction during the bag breaking process, and the rotation speed ratio means the rotation speed ratio with respect to the rotation speed during the bag breaking process. .

なお、上記のパターン１−１〜１−３、パターン２−１〜２−６、パターン３−１〜３−６のうち、いずれか１つのパターンのみでもクリーニング効果を得ることができるが、もちろん、上記の中から適宜選択される複数のパターンの組合せによって、更に高いクリーニング効果を得ることができる。

The cleaning effect can be obtained with only one of the patterns 1-1 to 1-3, patterns 2-1 to 2-6, and patterns 3-1 to 3-6. A higher cleaning effect can be obtained by combining a plurality of patterns appropriately selected from the above.

  In particular, one pattern selected from patterns 1-1 to 1-3, one pattern selected from patterns 2-1 to 2-6, and patterns 3-1 to 3-6. By operating in combination with one pattern selected from the above, a very high cleaning effect is exhibited. These three selected patterns may be controlled to operate sequentially or may be controlled to operate simultaneously.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these, A various deformation | transformation and change are possible within the range of the summary.

  FIG. 10 and Table 4 show the experimental results when the bag breaking process of the waste G is performed using the bag breaking apparatus S according to the first embodiment of the present invention. In the first embodiment, the ratio T of the rotational speed of the bag breaking rotor 8 to the rotational speed of the feed rotor 4 (the rotational speed of the take-out rotor 10 is also the same rotational speed) is changed, and the bag breaking rate V1 of the packaging material G2 is determined. The degree of change in the bag breaking rate V2, the unraveling rate V3, the required power of the drive motor M1, the degree of winding of the long waste or the like around the shaft member 14 (winding thickness) was evaluated. In Table 4, “◎” to “x” represent the degree of evaluation by the observer, “優” means “excellent”, “◯” means good, “Δ” means acceptable, and “x” means not possible.

  FIG. 10 is a graph in which the horizontal axis represents the ratio T, and the vertical axis represents the bag breaking rates V1, V2 and the unraveling rate V3. FIG. 10 shows that when the ratio T is less than 20 times, the bag breaking rate V1 of the packaging material G2 is less than 90%. Table 4 shows that the required power of the drive motor M1 becomes excessive when the ratio T exceeds 40 times.

  FIG. 11 and Table 5 show the experimental results when the bag breaking process of the waste G is performed using the bag breaking apparatus S according to the first embodiment of the present invention. In Example 2, the overlapping dimension W1 between the rotation centers of the rotation trajectory R1 of the feed blade 16 and the rotation trajectory R2 of the bag breaking blade 18 is changed to change the bag breaking rate V1 of the packaging material G2 and the inside of the packaging material G2. The degree of change in the bag breaking rate V2, the unraveling rate V3, the required power of the drive motor M1, and the degree of winding of the long waste etc. on the shaft member 14 (winding thickness) was evaluated. In Table 5, ◎ to × represent the degree of evaluation by the observer, ◎ means excellent, ◯ is good, Δ is acceptable, and x is impossible.

  FIG. 11 is a graph in which the horizontal axis is the overlapping dimension W1 and the vertical axis is the bag breaking rate V1, V2. FIG. 11 shows that when the overlap dimension W1 is less than 20 mm, the bag breaking rate V1 of the packaging material G2 is less than 90%. Table 5 also shows that the required power of the drive motor M1 begins to become excessive when the overlap dimension W1 exceeds 50 mm.

  FIG. 12 and Table 6 show the experimental results when the bag breaking process of the waste G is performed using the bag breaking apparatus S according to the first embodiment of the present invention. In the third embodiment, the overlap dimension W2 between the rotation trajectory R1 of the feed blade 16 and the rotation trajectory R3 of the take-out blade 20 is changed to change the bag breaking rate V1 of the packaging material G2 and the sachets inside the packaging material G2. The degree of change in the bag breaking rate V2, the unraveling rate V3, the required power of the drive motor M1, and the degree of winding of the long waste material around the shaft member 14 (winding thickness) was evaluated. In Table 6, ◎ to × indicate the degree of evaluation by the observer, ◎ means excellent, ◯ means good, Δ means acceptable, and x means impossible.

  FIG. 12 is a graph in which the horizontal axis is the overlap dimension W2 and the vertical axis is the bag breaking rate V1, V2. FIG. 12 shows that when the overlap dimension W2 is less than 40 mm, the bag breaking rate V2 of the pouch is less than 90%. Table 6 shows that the required power of the drive motor M1 becomes excessive when the overlap dimension W2 exceeds 160 mm.

θ: Angle C: Control device (control means)
G: waste G1: contents G2: packaging material J: virtual circle k: apex angle L: bisector L2: tangential direction M, M1 to M7: drive motor (drive source)
P: Ammeter (foreign matter detection means)
R1 to R3: Rotation locus S: Bag breaking device ra: Fixed distances W1, W2: Overlapping dimensions X, Y, Z: Arrow 2: Input port 4: Feed rotor 6: Guide plate 6a: Upper slit 6b: Lower slit 8: Rotor breaker rotor 10: Removal rotor 12: Discharge port 14, 22, 26: Shaft member 14a: Polygonal portion 16: Feed blade 18: Bag breakage blade 18a: Claw portion 20: Extraction blade 30: Foreign matter discharge port 32: Guide guide Plate 32a: One end 32b: Notch 33, 34: Scraper 35: Opening / closing door 40: Light emitting / receiving sensor (wrapping detection means)

Claims (8)

A bag-breaking device that breaks the packaging material of waste configured by enclosing the contents in a packaging material, and takes out the contents from the packaging material to the outside,
A slot for charging the waste;
A shaft member and a feed blade projecting substantially radially from the shaft member are disposed below the input port, and the waste introduced from the input port is directed toward the discharge port by rotation of the feed blade. A feed rotor to send out,
A shaft member and a bag breaking blade projecting radially from the shaft member, and the rotation trajectory of the bag breaking blade partially overlaps the rotation trajectory of the feed blade obliquely above the feed rotor. A bag-breaking rotor arranged in the
A shaft member and a takeout blade projecting substantially radially from the shaft member, and arranged obliquely below the feed rotor so that the rotation locus of the takeout blade partially overlaps the rotation locus of the feed blade The taken out rotor,
A bag breaking apparatus comprising: one or a plurality of drive sources that rotationally drive the feed rotor, the bag breaking rotor, and the take-out rotor.   The bag breaking apparatus according to claim 1, wherein an overlap dimension between rotation centers of the rotation trajectory of the feed blade and the rotation trajectory of the bag breaking blade is 20 mm or more and 60 mm or less.   The bag breaking device according to claim 1 or 2, wherein an overlapping dimension between rotation centers of the feed blade and the take-out blade is 40 mm or more and 160 mm or less.   The bag breaking device according to any one of claims 1 to 3, wherein a ratio of a rotation speed of the bag breaking rotor to a rotation speed of the feeding rotor is 20 times or more and 40 times or less. The shaft member of at least one of the feed rotor, the bag breaking rotor, and the take-out rotor,
The bag breaking device according to any one of claims 1 to 4, further comprising a polygonal portion having a non-circular shape having a cross-sectional shape in the plane perpendicular to the axis and having at least three apex angles. A winding detection means for detecting a winding thickness of the waste around the shaft member;
6. The bag breaking device according to claim 5, further comprising control means for controlling the drive source in accordance with an output from the winding detection means. Substantially shielding between the bag breaking rotor and the take-out rotor and the feed rotor;
An upper slit that penetrates the bag breaking blade to the feed rotor side and a lower slit that penetrates the take-out blade to the feed rotor side are formed, and the gap in the axial direction between the lower slit and the take-out blade is the The bag breaking device according to any one of claims 1 to 6, further comprising a guide plate formed larger than a gap in an axial direction between the upper slit and the bag breaking blade. Foreign matter detection means for detecting the introduction of foreign matter from the inlet,
Control means for performing reverse rotation control of the drive source in accordance with an output from the foreign matter detection means;
The bag breaking device according to any one of claims 1 to 7, further comprising a foreign matter discharge port different from the discharge port through which the foreign matter is discharged by reverse rotation of the feed rotor.

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