JPH069793U - Waste volume reduction press - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a press for reducing the volume of waste that does not cause the springback phenomenon. [Structure] The waste volume reduction press device 1 is provided with a ventilation path for allowing the air inside the press chamber 30 to escape to the outside, and the air inside the waste and the gaps between the wastes during the operation of the press is pressed into the press chamber 30.
Escape from inside to outside. As a result, even if the press chamber 30 is narrowed by the pressing operation, the internal air pressure is maintained at approximately atmospheric pressure, and compressed air does not remain inside the compressed mass that has been crushed to a small volume, and spring back The phenomenon does not occur.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention relates to a waste volume reduction press, and can be used for volume reduction processing of waste such as empty cans and PET bottles.

[0002]

[Background technology]

 In recent years, volume reduction press devices that can crush waste such as waste cans and PET bottles have been used. With such a volume reduction press, a plurality of wastes can be crushed into a small volume lump (hereinafter referred to as a compressed lump). Since a large number of dust collectors can be loaded, it is possible to increase the amount of waste transported without increasing the number of dust collectors and improve the efficiency of waste transport.

[0003]

[Problems to be solved by the device]

 However, in the conventional volume reduction press, if the object to be pressed is a PET bottle having high elasticity and high stability, each bottle in the compressed mass compressed by the press gradually expands with time, Finally, there is a problem of causing a so-called springback phenomenon in which the compressed mass is decomposed.

An object of the present invention is to provide a waste volume reduction press device that does not cause a springback phenomenon.

[Means for Solving the Problems]

 The present inventors have clarified through intensive research that the compressed air remaining inside the compressed mass is a cause of the above-mentioned sprinkling back phenomenon, and based on this point of view, the residual compressed air inside the compressed mass described above is pressed during pressing. It was devised to eliminate compressed air. Specifically, the waste volume reduction press is equipped with a ventilation passage that allows the air inside the press chamber to escape to the outside.

[0005]

[Action]

 In the present invention as described above, since the press chamber and the outside are communicated with each other by the ventilation passage, the air inside the waste and the air in the gap between the wastes is evacuated from the inside of the press chamber according to the pressing operation. It is exhausted to the outside through. As a result, even if the press chamber narrows due to the pressing operation, the air pressure is maintained at about atmospheric pressure. Therefore, the compressed air does not remain inside the compressed mass that has been crushed into a small volume, and the springback phenomenon does not occur, thereby achieving the above object.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a waste volume reducing press apparatus 1 of this embodiment.

The volume reduction press device 1 is a hydraulic drive device in which a main body 10 is provided with a hydraulic engine 20. The main body 10 has a base portion 11 arranged at the bottom and a pair of side plates 12 and the like arranged in parallel on both sides of the base portion 11 in the longitudinal direction at predetermined intervals.

The base portion 11 is formed by assembling a long member such as a channel material having a U-shaped cross section into a rectangular shape. Each of the side plates 12 has a protrusion 12A extending upward in the left side portion in FIG.

The main body 10 is provided with a press chamber 30 for crushing the waste material put between the pair of side plates 12. An engine space 40 for installing the hydraulic engine 20 is provided on the right side of the press chamber 30 in FIG. 1, and a shutter part 50 for closing the outlet 30A of the press chamber 30 is provided on the opposite side. .

The press chamber 30 includes a guide plate 31 provided along the bottom surface of the main body 10, a pair of guide plates 32 provided along the inner surface of the side plate 12, and a guide having an inner surface with an arcuate cross section. It is a space surrounded by the board 33. The guide plates 31 and 32 are removable, and can be replaced with new ones when they cannot be used due to wear or the like.

Inside the press chamber 30, there are provided a pressing lid 34 for pressing in the vertical direction and a pressing block 35 for pressing in the horizontal direction. Above the press chamber 30, a safety door 13 formed by bending a wire mesh or the like into a box shape is provided for opening and closing. The closed state of the safety door 13 is detected by a limit switch or the like provided at the closed position. When the safety door 13 is open, the pressing device 1 is not activated, so that the operator's hand or the like is prevented from being caught in the pressing lid 34. .

The pressing lid 34 is formed of a steel plate or the like, and has a base end rotatably fixed to a position adjacent to the pressing block 35. As a result, the pressing lid 34 is rotatable between the upright position A and the horizontal position B. At this time, the tip of the pressing lid 34 moves from an intermediate position C intermediate between the upright position A and the horizontal position B while contacting the inner surface of the guide plate 33. As a result, when the pressing lid 34 is located between the intermediate position C and the horizontal position B, the pressing chamber 30 is sealed by the pressing lid 34.

The pressing block 35 has a rectangular parallelepiped shape that slides in a space surrounded by the pressing lid 34 located at the horizontal position B and the guide plates 31, 32 while closely contacting the pressing lid 34 and the guide plates 31, 32. Is.

On the pressing surface 35 A of the pressing block 35, as shown in FIG. 4, a large number of grooves 36 are formed vertically and horizontally. The groove 36 serves as a guide path for guiding the air, which is pushed out from the inside of the waste when the waste is pressed and reaches the pressing surface 35A, to both ends of the pressing block 35.

The side surfaces 35 B on both sides of the pressing block 35 are surfaces that come into close contact with the guide plate 32. A plurality of grooves 37 extending along the sliding direction of the pressing block 35 are formed on the side surface 35B. The groove 37 serves as a ventilation path that allows the air, which is guided by the groove 36 of the pressing surface 35A and reaches both ends of the pressing block 35, to escape to the outside of the press chamber 30.

Returning to FIGS. 1 to 3, the engine space 40 is provided with a hydraulic unit 21 that constitutes the hydraulic engine 20, and first and second hydraulic cylinders 22 and 23.

The hydraulic unit 21 appropriately supplies and discharges the pressurized oil to and from the first and second hydraulic cylinders 22 and 23 by a control device (not shown) incorporated therein. , A series of set press operations are automatically performed.

The first hydraulic cylinder 22 has a cylindrical main body 22A and a hydraulically operated plunger 22B. The main body 22A of the first hydraulic cylinder 22 is rotatably fixed to a stay 14 having an H-shaped cross section that is bridged between the side plates 12. The plunger 22B has a tip rotatably fixed to the back surface of the pressing lid 34.

As a result, when the pressing lid 34 reaches the vicinity of the horizontal position B, the driving force of the first hydraulic cylinder 22 is made larger than that in the vicinity of the upright position A, whereby the horizontal position of the pressing block 35 is increased. The pressing lid 34 is prevented from opening by pressing in the direction. By driving the first hydraulic cylinder 22, the pressing lid 34 is opened / closed / pressed.

The second hydraulic cylinder 23 has a structure similar to that of the first hydraulic cylinder 22, and has a cylindrical main body 23A and a plunger 23B. The main body 23A of the second hydraulic cylinder 23 is fixed by a holder 15 installed between the side plates 12. The tip of the plunger 23B is fixed to the back surface of the pressing block 35. By driving the second hydraulic cylinder 23, the pressing operation of the pressing block 35 is performed.

The shutter unit 50 includes a shutter 51 that is vertically movable, a third hydraulic cylinder 52 that drives the shutter 51, and a guide member 53 that guides the shutter 51.

The shutter 51 is a rectangular face material that is thick and does not deform even when the pressing force of the pressing block 35 is applied. By moving the shutter 51 up and down, the outlet 30A of the press chamber 30 is opened and closed.

The third hydraulic cylinder 52 has a structure similar to that of the first and second hydraulic cylinders 22 and 23. One third hydraulic cylinder 52 is arranged on each side of the shutter 51, and the tip thereof is the shutter 51. It is connected to the upper edge of.

The guide member 53 is a vertically long member provided with a vertically extending groove 53A. Edges are fitted to both sides of the shutter 51 in the groove 53A of the guide member 53, whereby the moving direction of the shutter 51 is limited only to the vertical direction.

Next, the operation of this embodiment will be described. First, with the safety net 13 opened in advance, as shown in FIG. 5 (A), the waste 16 such as an empty PET bottle is put in the press chamber 30, and the safety net 13 is closed. .

Next, the power is turned on to start the press machine 1. As a result, the first hydraulic cylinder 22 is actuated, and as shown in FIG. 5 (B), vertical pressing is performed to crush the waste 16 from above, and the waste is flattened.

When the vertical pressing is completed, the second hydraulic cylinder 23 is actuated, and as shown in FIG. 5 (C), the horizontal pressing for crushing the waste 16 from the lateral direction is performed and the flattening is performed. The waste 16 that has become a square bar-shaped compressed mass 17 is formed.

At this time, even if the waste 16 is in close contact with the pressing surface 35A of the pressing block 35, the air extruded from the inside of the waste 16 passes through the groove 36 of the pressing surface 35A and is discharged from the pressing block 35A. The compressed air remains inside the compressed mass 17 that is formed by crushing the waste 16 because it reaches both ends and escapes to the outside of the press chamber 30 through the groove 37 on the side surface 35B. Will not do.

Subsequently, the plunger 23B of the second hydraulic cylinder 23 is slightly retracted to remove the pressing force applied to the shutter 51, and then the shutter 51 is opened. Then, the second hydraulic cylinder 23 is actuated again, and as shown in FIG. 5D, the compressed mass 17 formed by crushing the waste 16 is pushed and discharged from the press chamber 30 to the outside. Complete.

According to this embodiment as described above, there are the following effects. That is, since the inside and the outside of the press chamber 30 are communicated with each other through the groove 37, the air inside the press chamber 30 is exhausted from the inside of the press chamber 30 to the outside through the groove 37. For this reason, the air pressure in the press chamber 30 is maintained at about atmospheric pressure, and compressed air does not remain in the compressed mass 17 formed by compressing the waste 16 by the press, and the spring back phenomenon is not caused. Can be prevented.

Further, a large number of grooves 36 are formed vertically and horizontally on the pressing surface 35A of the pressing block 35, and even if the waste 16 in the press is in close contact with the pressing surface 35A, the air pushed out from within the waste 16 is not a groove. Since both ends of the pressing block 35 are easily reached through the 36, the exhaust effect of the groove 37 of the press chamber 30 is enhanced, and the compressed air does not remain in the compressed mass, preventing the springback phenomenon. Can be improved.

Furthermore, since the groove 37 is provided on the side surface 35B of the moving pressing block 35 to form the ventilation path, the movement of the pressing block 35 automatically removes the dust clogged in the groove 37. Therefore, the groove 37 is not clogged, and the press chamber 30 can operate properly even if it is slightly dirty.

In discharging the compressed mass, the plunger 23B of the second hydraulic cylinder 23 is slightly retracted to remove the pressing force applied to the shutter 51, and then the shutter 51 is operated, and the compressed mass 17 is removed. Since the second hydraulic cylinder 23 pushes and discharges the compressed mass 17, the compressed mass 17 that has been pressed can be reliably discharged.

Further, when the safety door 13 is open, the pressing device 1 is prevented from operating, and it is possible to prevent the operator's hand or the like from being caught in the pressing lid 34. It can be used even by a non-worker, and can be used in restaurants and kitchens of ordinary households.

It should be noted that the present invention is not limited to the above-described embodiment, but includes the following modifications and the like. That is, the ventilation passage is not limited to the groove 37 provided on the side surface 35B of the pressing block 35, and, for example, a hole penetrating the front and back of the pressing block 35 or a large number of holes formed in the pressing surface 35A can be formed. The holes may be communicated with each other inside the pressing block 35, and the holes may be collected on the opposite side of the pressing block 35 and exhausted.

Further, the site where the ventilation path is provided is not limited to the pressing block 35, and for example, the bottom surface of the main body 10 on which the shutter 51 and the guide plate 31 are installed, the side plate 12 on which the guide plate 32 is installed, or It may be provided on the pressing lid 34, and in short, it may be any one that allows the air in the press chamber 30 that is narrowed to press the waste 16 to escape to the outside.

Further, although it is not necessary to form the groove 36 on the pressing surface 35 A of the pressing block 35, if the groove 36 is provided, the above-described effect can be obtained.

In addition, the volume reducing press device 1 has not only a ventilation path for letting out only the air in the press chamber 30, but also a drain port or the like penetrating the site on the bottom surface or the side surface of the press chamber 30, for example. It may be provided. By doing this, it is possible to reduce the volume of the waste containing the liquid inside.

Further, the pressing lid 34 for pressing in the vertical direction is not limited to the one in which the base end is rotatably fixed, but is installed so as to be movable up and down with the surface pressing the waste horizontal. It may be one that has been made.

Further, the pressing direction is not limited to the horizontal direction and the vertical direction shown in the above embodiment, and for example, two directions orthogonal to each other in the same horizontal plane, two directions orthogonal to each other in the same vertical plane, etc. However, what is necessary is just to be able to press in a direction substantially orthogonal to each other in the same plane.

The present invention is not limited to a volume reduction press device that performs bidirectional pressing, and, for example, a volume reduction press device that performs pressing in only one direction in the horizontal direction or a press in three directions of vertical and horizontal heights. It can also be applied to volume reduction press equipment.

[0042]

[Effect of device]

 As described above, according to the present invention, the air in the compressed mass is released by the exhaust air in the press chamber, so that the occurrence of the springback phenomenon can be prevented.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an entire embodiment of the present invention.

FIG. 2 is a plan view of FIG.

3 is a side view taken along the line III of FIG.

FIG. 4 is an enlarged perspective view showing a ventilation path of the present embodiment.

FIG. 5 is a schematic diagram for explaining the operation of the present embodiment.

[Explanation of symbols]

 1 Waste volume reduction press 30 Press room 37 Ventilation channel

Claims (1)

[Scope of utility model registration request] 1. A volume reduction press device for waste that puts waste into a press chamber provided inside and crushes the press chamber, wherein a vent passage is provided for allowing air inside the press chamber to escape to the outside. Waste volume reduction press equipment.