JP4526070B2 - Waste plastic container packing equipment - Google Patents

Description

  The present invention relates to an apparatus for compressing and packing a waste plastic container such as a plastic bottle.

  When recovered plastic containers such as plastic bottles are sent to a processing factory for disposal or reuse, a large number of containers are compressed and packed in predetermined amounts to facilitate storage and transportation. Usually, for example, a continuous compression packing is mechanically performed using a waste plastic container packing apparatus including a pressurizing unit for compressing and reducing a container and a binding machine for binding a compressed product (for example, patents). Reference 1).

  As a specific configuration of the waste plastic container packing device, for example, as shown in FIG. 4, a large amount of waste plastic container charged into the pressurizing chamber 102 is crushed from above by a pressurizing cylinder 103 to have a predetermined size. The compressed mass A is compressed and reduced to a discharge chamber 107 adjacent to the pressurizing chamber 102 from the lower gate 104 opened by the operation of the gate cylinder 105 and discharged from the horizontal direction.

  At the position where the compressed mass A has exited the discharge port 109 in the direction of extrusion of the discharge chamber 107 by this extrusion, a polypropylene band 26 is formed in a ring shape surrounding the compressed mass A along the band guide 22 of the binding machine 20. The belt 26 is extended by a driving roller in the feeding and tightening mechanism 25, and the band 26 is removed from the band guide 22, and the band 26 is tightened by the feeding and tightening mechanism 25 to bind the compressed mass A to the overlapping portion of the band 26. The compressed mass A is band-bound by pressing and heating the heating surface 24 of the heater device. The compressed mass A that has been bound is further pushed out to the cradle 30 outside the binding machine 20 and is stored or transported as it is or further packed.

Japanese Patent No. 3204650

  In the waste plastic container packing apparatus configured as described above, the moisture contained in the waste plastic container when the compressed mass A compressed in the pressure chamber 102 is discharged to the binding machine 20 and bound by the band 26. In addition, food residue or debris generated by breaking the container during compression may fall on the band guide 22 of the binding machine 20 and adhere to the surface of the band 26. When such a deposit is tightened as it is, the band 26 is wound inside the binding machine and adheres to the surface of the driving roller in the feeding and tightening mechanism 25, and the roller may slide to reduce the tightening force and cause a binding failure. was there.

  Therefore, conventionally, when the compressed mass A passes through the discharge chamber 107, a groove 108 is provided on the lower surface of the discharge chamber 107 for dropping water, residual liquid, debris, and the like in advance upstream from the discharge port 109. . However, such grooves 108 alone cannot sufficiently remove moisture such as debris and residual liquid generated in the compression process, and cannot prevent intrusion into the binding machine 20 side, and therefore, it has not been possible to avoid the occurrence of binding defects.

  Further, as shown in FIG. 4C, the band 26 is bound to the compressed mass A by the binding machine in the apparatus as described above by removing the band 26 from the guide groove 23 of the band guide 22 so that the band 26 can be tightened. The band guide 22 is usually covered with a band guide cover 21, and the band 26 is removed from the guide groove 23 by moving within the band guide cover 21. However, if the fragments B generated from the container broken in the compression process enter the band guide cover 21, the normal movement of the band guide 22 is restricted, and the band 26 does not come off from the guide groove 23 well, resulting in poor binding. It was the cause.

  In view of the above problems, an object of the present invention is to provide a waste plastic container in which moisture such as residual liquid generated during the compression process of the waste plastic container and intrusion of debris into the binding machine side can be prevented and the compressed material can be always bundled well. To obtain a packing device.

In order to achieve the above object, a waste plastic container packing device according to the invention described in claim 1 includes a pressurizing means for compressing and reducing a plurality of waste plastic containers accommodated in a pressurization chamber into an integral compressed mass. In a waste plastic container packing device comprising a binding machine for binding a heat-bondable resin band to the compressed mass, and an extruding means for extruding the compressed mass from the pressure chamber to the binding machine,
A discharge chamber for allowing the compressed mass extruded from the pressure chamber by the pushing means between the pressure chamber and the binding machine to pass therethrough while maintaining its compression size;
The binding machine includes a band guide in which the band is arranged in a ring shape so as to surround the compressed lump coming out from the discharge port of the discharge chamber, and the band is extended along the band guide and the compressed lump is formed in the ring shape. It has a mechanism to tighten the band when it comes out inside,
In the discharge chamber, it extends over the width direction from the lower end side of the discharge port so as to project between the bottom surface of the compressed mass and the band arranged in a ring shape, and fragments, moisture, A first shielding plate is provided to prevent the remaining liquid from dropping ;
On the back surface of the first shielding plate, an interval holding projection is provided for separating the band with a space from the back surface of the first shielding plate when tightening .

  A waste plastic container packing device according to a second aspect of the present invention is the waste plastic container packing device according to the first aspect of the present invention, in the lower corners near the discharge port of the discharge chamber from the band guide. A notch groove that is notched over the upstream region is formed.

The waste plastic container packing device according to the invention described in claim 3 is the waste plastic container packing device according to claim 1 or 2, wherein the band guide includes a band tightened around the compressed mass. It has a heat device that stops by heat fusion,
In the discharge chamber, a second shielding plate extending between the heating surface and the compressed lump side surface is extended from the discharge port side end so as to cover the heating surface of the heat device.

  According to the waste plastic container packing device of the present invention, in a discharge chamber through which the compressed mass is pushed out from the pressurizing chamber to the binding machine, a band guide and a band disposed by a band guide for binding the compressed mass are discharged. A band of moisture, residual liquid, debris, etc. generated in the compression process by the first shielding plate extending from the lower end side of the discharge port so as to project between the bottom of the compressed mass coming out from the discharge port of the chamber Since the drop on the guide and the band is prevented, the intrusion into the binding machine through the band guide and band such as moisture, residual liquid, and fragments that cause the binding failure is avoided. There is an effect that the binding is always performed well.

  Further, in the waste plastic container packing device of the present invention, a stretch is provided between the heating surface and the compressed lump side surface so as to cover the heating surface of the heating device for stopping the band tightened around the compressed lump by heat fusion. By extending the second shielding plate to be extended from the end on the discharge port side, it is possible to prevent the waste plastic fragments from being scattered on the heating surface, which is an impediment to the fusing operation. There is an effect of contributing to further reduction.

  The waste plastic container packing apparatus of the present invention compresses and reduces a plurality of waste plastic containers accommodated in a pressurizing chamber by a pressurizing means into an integrated compressed lump, and binds the compressed lump from the pressurizing chamber by an extruding means. It is pushed out to the machine and sent, and it is bound by a resin band that can be heat-sealed by a binding machine, and is bound from the pressurizing chamber by passing through a discharge chamber provided between the pressurizing chamber and the binding machine. The compressed size of the compressed mass is maintained up to the machine.

  In the binding machine, the band is arranged in a ring shape so as to surround the compressed mass coming out from the discharge port of the discharge chamber by the band guide, and the band is fed along the band guide by the feeding and tightening mechanism and the compressed mass is discharged into the discharge chamber. The band is tightened and bound when it is pushed out from the pressurizing chamber through the ring and comes out into the ring shape, but the discharge chamber has a space between the bottom surface of the compressed mass and the band arranged in the ring shape. The 1st shielding board is extended from the discharge port lower end side so that it may protrude over the width direction.

  Therefore, in the waste plastic container packing apparatus of the present invention, fragments, moisture, and residue generated in the compression process of the waste plastic container that could not fall from the groove provided on the lower surface of the discharge chamber during the passage of the compressed mass. Since liquid etc. are prevented from dropping onto the band and band guide by the first shielding plate, moisture and residual liquid adhere to the band in the band guide and penetrate into the binding machine and feed the band. In addition, the binding failure is greatly reduced without sliding the drive portion of the tightening mechanism to reduce the tightening force.

  In addition, it is possible to prevent debris from falling to the periphery of the band guide, so that the debris will not enter any part that would interfere with the movement of the band guide to remove the band during bundling, and bundling defects due to debris intrusion will be reduced. Is done.

  In addition, the band tightened at the time of bundling comes into contact with the back surface of the first shielding plate on the bottom surface side of the compressed mass, but when moisture or residual liquid wraps around and adheres to the back side of the first shielding plate, It is conceivable that this moisture or residual liquid wets the band and tightening is insufficient. Therefore, in order to prevent the band from getting wet, it is preferable to take measures to prevent the band from coming into contact with the back surface of the first shielding plate.

  For example, a configuration in which a spacing holding projection is provided on the back surface of the first shielding plate so that the band is kept at a predetermined distance from the back surface of the first shielding plate when tightening is simple. If about two spacing holding projections are provided at both ends of the band contact corresponding area, the band in the tension state almost floats with respect to the back surface of the first shielding plate between the projections and is not in contact. Can do.

  When using such a spacing protrusion, the surface of the protrusion can be made sufficiently smaller than the area of the back surface of the first shielding plate, so that the amount of moisture and residual liquid attached can be extremely small, resulting in wetness of the band surface. Can be kept to a minimum, so there is no problem that causes a binding defect.

  In addition, the compressed lump is rounded or squared in various shapes, but if the corner is rounded, debris that is not pushed out by the compressed lump when passing through the discharge chamber is formed at the bottom corners. It remains and tends to accumulate. The debris remaining in the corner may be pushed out during the passage of another angular compressed mass and fall near the band guide, causing a binding failure.

  Therefore, if the notch groove cut out in the upstream area from the band guide is formed at both corners of the lower surface near the discharge port of the discharge chamber, the fragments left at the lower corners are pushed out. Even if this occurs, it is dropped from the notch groove upstream of the band guide, so that it is possible to avoid causing a binding failure.

  In addition, if scattered plastic waste fragments enter a heating device that stops the band that has been tightened around the compaction mass by bundling during bundling, the fusing operation of the device will be hindered and bundling will be insufficient. There was a risk of failure.

  Therefore, it is desirable to extend the 2nd shielding board extended from this heating surface and the compression lump side surface from the discharge port side edge so that the heating surface of this heat apparatus may be covered. Such a second shielding plate prevents the intrusion of debris into the heating device, and sufficient heat fusion can always be performed without causing any trouble in the fusion operation of the device, so that further reduction in binding defects can be achieved. .

  A waste plastic container packing apparatus according to an embodiment of the present invention is shown in FIG. FIG. 1A is a schematic longitudinal sectional view showing an overall configuration of a pressurizing / binding portion region of the apparatus, and FIG. 1B is a schematic partial plan view of a discharge port portion near a band guide as viewed from above. .

  The waste plastic container packing apparatus 1 is configured to crush a plurality of waste plastic containers put into the pressurizing chamber 2 from above by a pressurizing cylinder 3 to a predetermined size, similarly to the conventional apparatus shown in FIG. The compression volume is reduced, and the compressed mass A is pushed out from the lower gate 4 opened by the operation of the gate cylinder 5 and pushed out from the horizontal direction to the binding machine 20 through the discharge chamber 7 adjacent to the pressurizing chamber 2 by the cylinder 6. To be discharged.

  A groove 8 is provided on the lower surface of the discharge chamber 7, so that most of the moisture, food residue, and broken container fragments generated during the compression process when the compressed mass A passes through the discharge chamber 7. It drops from this groove 8 and is excluded. In addition, a polypropylene band 26 surrounds the compression lump A along the band guide 22 of the binding machine 20 at a position where the compression lump A exits the discharge port 9 in the push-out direction of the discharge chamber 7 by this extrusion. The feed and tightening mechanism 25 is fed out in a ring shape by a driving roller.

  When the compressed mass A comes out from the discharge port 9 of the discharge chamber 7 into the band ring arranged in this ring shape, the binding machine 20 removes the band 26 from the band guide 22 and tightens the band 26 by the feeding and tightening mechanism 25. Thus, the compressed mass A is bound and the compressed mass A is band-bound by pressing the heating surface 24 of the heater device installed on the band guide 22 against the overlapping portion of the band 26 to prevent thermal fusion.

  In the present embodiment, the first shielding plate 10 extends from the lower end side of the discharge chamber 7 in the width direction so as to protrude between the bottom surface of the compressed mass A and the band 26 arranged in a ring shape. Has been. Accordingly, since the first shielding plate 10 prevents moisture, residual liquid, debris and the like that have not fallen from the groove 8 when passing through the discharge chamber 7 from falling onto the band guide 22, the band guide is prevented. Moisture and residual liquid adhere to the band 26 in the band guide groove 23 of 22 and penetrate into the binding machine without sliding the driving unit of the band 26 feeding and tightening mechanism 25 to reduce the tightening force. Further, since the fragments enter between the band guide 22 and the band guide cover 24 covering the band guide 22 and the movement of the band guide 22 in the band guide cover 24 at the time of band tightening is not restricted, the band 26 is tightened. It can be done well and binding defects are greatly reduced.

  Furthermore, in the waste plastic container packing device 1 of the present embodiment, the heating surface 24 of the heating device is pressed at a position corresponding to the side surface portion of the compressed mass A in order to stop the tightened band 26 at the overlapping portions. Although it is heat-sealed, a second shielding plate 11 extending from the heating surface 24 and the side surface of the compressed mass A is provided so as to cover the heating surface 24 so as to extend from the discharge port side end side. It was. By the intervention of the second shielding plate 11, debris intrusion into the heating device is prevented and stable heat fusion can be performed at all times, so that the occurrence of defective binding is further reduced.

  As described above, the compressed lump A is excellently band-bound by being pushed out from the pressurizing chamber 2 to the binding machine 20 through the discharge chamber 7 without bringing in the moisture generated in the compression process, residual liquid or fragments when the container is broken. Is further pushed out to the cradle 30 outside the binding machine 20 and stored or transported as it is or further packed.

  As a preferred embodiment different from the above embodiment, as shown in FIG. 2, notches cut out over the upstream region from the band guide 22 at both corners of the lower surface near the discharge port of the discharge chamber 7. Some have grooves 12 formed. Normally, the compressed mass A has rounded or angular corners and various shapes, but if the corners are rounded, fragments that are not pushed out by the compressed mass A when passing through the discharge chamber 7 are on the bottom surface. Although it is likely to remain in both corners and collect easily, even if the debris remaining in both corners on the lower surface is pushed out together with the angular compression lump A by this notch groove 12, the notch groove is located upstream from the band guide 22. Since it is dropped, it is avoided that the debris remaining in the part is pushed out when another angular compressed mass passes and falls near the band guide, causing a binding failure.

  Further, as another preferred embodiment, as shown in FIG. 3, an interval holding projection 13 that can separate the band 26 with a predetermined interval from the back surface of the first shielding plate 10 during tightening is provided on the back surface of the first shielding plate. There is a configuration provided. This is because the band 26 that is tightened at the time of bundling comes into contact with the back surface of the first shielding plate 10 on the bottom surface side of the compressed mass A, and moisture and residual liquid wrap around and adhere to the back surface of the first shielding plate 10. In this case, it is conceivable that the moisture or residual liquid wets the band 26 and tightening is insufficient. However, by providing the gap holding projection 13 and separating the band 26 from the back surface of the first shielding plate 10, Wetting can be prevented.

  For example, as shown in FIG. 3, the spacing holding projections 13 are provided one at each end of the back surface of the first shielding plate 10, so that the band 26 that is in tension is placed between the projections 13 with respect to the first shielding plate back surface. Can almost float and be non-contact. Of course, the number of the spacing holding projections 13 is not limited to two, but is three or more. The number of the bands 26 that can be satisfactorily separated from the back surface of the first shielding plate is appropriately set according to the actual device design such as the discharge port width. What is necessary is just to provide at intervals.

  In the case where such a spacing holding projection 13 is provided, it is made sufficiently small so that the amount of moisture and residual liquid adhering to the projection surface is extremely small. Thus, by making it sufficiently smaller than the area of the first shielding plate back surface 10, it is possible to minimize the factor that wets the surface of the band 26, so that there is no problem that causes a binding failure.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the waste plastic container packing apparatus by one Example of this invention, (a) is a whole sectional side view, (b) is a schematic partial top view which looked at the discharge port part near a band guide from upper direction. . It is the general | schematic fragmentary top view which looked at the discharge port part vicinity of the band guide by another embodiment of this invention from upper direction. It is a schematic block diagram of the discharge port part vicinity of the band guide by another embodiment of this invention, (a) is a schematic partial side view, (b) is the schematic front view seen from the discharge port side, (c) is a band. It is a fragmentary sectional view of a guide groove part. It is a schematic block diagram which shows an example of the conventional waste plastic container packing apparatus, (a) is a whole sectional side view, (b) is explanatory drawing which shows the structure of a binding machine part, (c) is the state of a band guide part. It is explanatory drawing shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101: Waste plastic container packing apparatus 2,102: Pressurization chamber 3,103: Pressure cylinder 4,104: Gate 5,105: Gate cylinder 6,106: Push cylinder 7,107: Discharge chamber 8,108: Grooves 9, 109: discharge port 10: first shielding plate 11: second shielding plate 12: notch groove 13: spacing holding projection 20: binding machine 21: band guide cover 22: band guide 23: band guide groove 24: heat Heating surface 25 of the apparatus: feeding and tightening mechanism 26: band 30: cradle A: compressed mass B: debris

Claims (3)

Pressurizing means for compressing and reducing a plurality of waste plastic containers accommodated in a pressurizing chamber into an integral compressed mass, a binding machine for binding a heat-bondable resin band to the compressed mass, and the compressed mass Extruding means for extruding the pressure chamber from the pressurization chamber to the binding machine,
A discharge chamber for allowing the compressed mass extruded from the pressure chamber by the pushing means between the pressure chamber and the binding machine to pass therethrough while maintaining its compression size;
The binding machine includes a band guide in which the band is arranged in a ring shape so as to surround the compressed lump coming out from the discharge port of the discharge chamber, and the band is extended along the band guide and the compressed lump is formed in the ring shape. It has a mechanism to tighten the band when it comes out inside,
In the discharge chamber, it extends over the width direction from the lower end side of the discharge port so as to project between the bottom surface of the compressed mass and the band arranged in a ring shape, and fragments, moisture, the first shielding plate for preventing the falling of the residual liquid is provided,
A waste plastic container packing device, characterized in that an interval holding projection is provided on the back surface of the first shielding plate to separate the band with a space from the back surface of the first shielding plate when tightening .   2. The waste plastic container package according to claim 1, wherein a notch groove is formed in both corners of the lower surface near the discharge port of the discharge chamber so as to be cut out in an upstream region from the band guide. apparatus. The band guide includes a heat device that stops the band tightened around the compressed mass by heat fusion,
In the discharge chamber, a second shielding plate that extends between the heating surface and the compressed lump side surface extends from the discharge port side end so as to cover the heating surface of the heat device. The waste plastic container packing apparatus according to claim 1 or 2.

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