JP2006272050A - Vertical type crusher of molded box made of plastic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently and uniformly crush and volume-reduce a molded box made of plastic without leaving debris pieces. <P>SOLUTION: A uniaxial crusher is composed by arranging a plurality of crushing blades on the periphery of a horizontal driving shaft at the lower part of a vertical type pressurizing chamber provided with a pressurizing plate to be slid in a vertical direction. The vertical type pressurizing chamber is in a rectangular shape on the cross section formed of a rear wall, left and right side walls and a front wall, a door for the purpose of opening and closing for forming a feeding port is provided on the front wall side, the front wall of the pressurizing chamber is used also as the door, and the molded box made of plastic is continuously crushed without leaving the debris pieces while holding it by the walls on four sides. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement of a crushing machine that crushes and reduces used or damaged plastic molding boxes to treat recycled raw materials and waste.

As plastic molding boxes, for example, transport containers such as beer bottles, liquor bottles, and milk bottles are known. Many plastic molding boxes of this type use a large number of hard synthetic resin materials, polyethylene materials, and the like. In the case of reducing the volume of the above-mentioned used containers for the purpose of recycling and discarding raw materials, a large-sized and large horsepower crusher has been required. Japanese Patent No. 3195524 (Patent Document 1) is known as a small uniaxial crusher, and a technique for efficiently crushing various industrial wastes is disclosed.
Japanese Patent No. 3195524

  The uniaxial crusher shown in the above-mentioned document has a horizontal configuration in which a pushing pusher that presses waste against a rotary blade is provided on a base plate so as to be slidable and retreatable in the horizontal direction. Then, when a plastic molding box as an object of the present invention is put into a hopper arranged on the base plate, the crushing action is performed by being pressed by the rotary blade of the crushing device by a pusher (pressing plate). At this time, the molded box starts to violently dance due to impact and reaction, and the crushing action becomes uncertain as it tries to escape to the hopper entrance, leaving large debris, and the shattering pieces are scattered on the base plate and disturb the sliding. There was a problem.

  In order to solve the above problems, a crushing apparatus is installed by providing a plurality of crushing blades on the periphery of a horizontal driving shaft at the lower part of a vertical pressing chamber having a pressing plate that slides in the vertical direction. In the uniaxial crusher, the vertical pressing chamber has a square cross section formed from a rear wall, left and right side walls, and a front wall, and an openable / closable door is provided on the front wall side to form an inlet. This door provides a vertical crusher for a plastic molding box that also serves as the front wall of the pressing chamber. Further, in the above vertical crusher, a configuration is provided in which the side cross section of the pressing plate is formed in a substantially arc shape so as to be close to the rotation locus circle of the crushing blade.

  Since the vertical pressing chamber of the present invention has a quadrangular cross section, an openable / closable door is provided on the front wall side to form an inlet, and the front wall of the pressing chamber is also used. It can be thrown in from the position and is pressed against the crusher below while holding its four sides. Noise is prevented by crushing with the door closed. In addition, since the side cross section of the pressing plate forms a substantially circular shape close to the rotation trajectory circle of the crushing blade, the front and rear ends of the pressing plate are positioned below the apex of the cutting edge rotation trajectory, and plastic molding Since the box is pressed from the front end portion and the rear end portion toward the central rotary blade, it is crushed almost uniformly up to the final corner portion and at the same time, the crushed pieces do not stay.

  The configuration will be described based on the drawings in which the present invention is implemented. 1 is a front cross-sectional view, FIG. 2 is a state diagram in which the pressing plate approaches the crushing blade, FIG. 3 is a left side cross-sectional view, FIG. 4 is a right side view showing power transmission, and FIG. FIG. 6 and FIG. 6 are left side views showing a crushed state of the plastic molding box. The overall configuration will be described with reference to FIGS. Reference numeral 1 denotes a pressing chamber standing up and down in the vertical direction, having a door 4 that also serves as a front wall on the front, and is composed of a left side wall 3, a right side wall 2, and a rear wall 5. Reference numeral 8 denotes a pressing plate that slides up and down inside the pressing chamber 1 and is connected to a piston rod 7 of a hydraulic cylinder 6 provided in the upper portion of the pressing chamber 1. The door 4 is pivotally attached to the lower portion by a hinge 22 and is opened upward with the lock pin 26 provided on the upper portion and attached and detached.

Reference numeral 10 denotes a crushing device, which is installed in the lower part of the pressing chamber 1 described above. The crushing device 10 is supported by left and right support frames 21, and is configured by providing a plurality of high crushing blades 12 and low crushing blades 13 on the circumference of the drive shaft 11 in the horizontal direction. The high crushing blades 12 and the low crushing blades 13 are alternately arranged and phased at an appropriate pitch in the circumferential direction. The support frame 21 of the crushing apparatus 10 is installed on a gantry 20 provided further below. A storage box 18 is stored inside the gantry 20.

  The crushing apparatus 10 shown in FIG. 3 shows the side surface of the high crushing blade 12 and the low crushing blade 13 attached to the drive shaft 11, and the front-end | tip of a crushing blade draws the locus | trajectory of a concentric circle, respectively. Reference numeral 14 denotes a receiving blade, which is provided in a pair at the front and rear, and crushes the object to be crushed by the cutting force of the receiving blade by the rotational force of the crushing blade. Reference numeral 15 denotes a screen for selecting the particle size of the crushed pieces and dropping them into a storage box 18.

  The pressure plate 7 is formed in a substantially arc shape so that the side surface section is close to the rotation locus circle of the crushing blade in a side view. The front end and the rear end of the arc-shaped cross section of the pressing plate 7 are brought into contact with the corner portion of one side wall of the plastic molding box 25 and pressed toward the central portion of the pressing chamber. Accordingly, when the pressing plate 7 moves to the lower crushing device 10 while pressing the plastic molding box 25 and reaches the lower end, the front end and the rear end of the substantially arc-shaped cross section are from the apex of the cutting edge rotation locus of the crushing blade. Is also located below, so that the plastic molding box 25 is crushed up to the last corner of the upper wall.

Further, a protruding piece 9 is attached to the inner surface of the pressing plate 7 so as to be positioned in the groove portion between the high crushing blades 12 described above. Accordingly, in the plastic molding box 25 pressed on the crushing blade by the pressing plate 7, the remaining material remains because the protruding pieces 9 are superposed between the high crushing blades 12 as shown in FIG. Without being crushed to a predetermined size. Reference numeral 17 denotes an electric motor that drives the crushing device 10. Reference numeral 16 denotes a motor unit that operates the hydraulic cylinder 6.

  Although FIG. 4 shows power transmission, the electric motor 17 drives a drive sprocket 24 provided on the drive shaft 11 of the crushing device 10 via a driving sprout 23. Reference numeral 16 denotes a hydraulic motor unit, which is composed of an oil tank, a hydraulic pump, and a hydraulic motor, and sends oil to the hydraulic cylinder 6 for expansion and contraction.

  FIG. 5 is a state diagram in which the door 4 also serving as the front wall of the pressing chamber 1 is opened forward and tilted with the hinge 22 as a fulcrum, and a plastic molding box 25 is inserted along the inclined surface of the door 4. . When the plastic molding box 25 is put into the pressing chamber 1 and the door 4 is closed when it reaches the upper surface of the crushing blade, it is held by the four-sided wall. At this time, when the crushing operation is switched on, the plastic molding box 25 is pressed downward by the pressing plate 8 having a substantially arc-shaped cross section when viewed from the side, and crushing is continued as shown in FIG.

In FIG. 6, the piston rod 7 presses the plastic molding box 25 downward by the pressing plate 8. The plastic molding box 25 is held and regulated by the rear wall 5, the right side wall 2, the left side wall 3, and the door 4 that also serves as the front wall, and is forcedly pressed by the crushing blade below. The plastic molding box 25 is crushed by a crushing blade comprising front and rear receiving blades 14, 141, a high crushing blade 12, and a low crushing blade 13, and the crushed pieces are further sorted by a screen 15 and stored in a storage box 18.

Front sectional view Front view of the pressing plate approaching the crushing blade Left side cross section Right side view showing power transmission Left side view showing the state of plastic molding box Left side view showing the crushing state of a plastic molding box

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pressing chamber 2 Right side wall 3 Left side wall 4 Door 5 Rear wall 6 Hydraulic cylinder 7 Piston rod 8 Pressing plate 9 Protruding piece 10 Crushing device 11 Drive shaft 12 High crushing blade 13 Low crushing blades 14 and 141 Receiving blade 15 Screen 16 Hydraulic motor Unit 17 Electric motor 18 Housing box 20 Mounting base 21 Support frame 22 Hinge 23 Driving sprocket 24 Driving sprocket 25 Plastic molding box 26 Lock pin

Claims (2)

In the uniaxial crusher comprising a plurality of crushing blades provided on the periphery of a horizontal driving shaft at the lower part of a vertical pressing chamber provided with a pressing plate that slides in the vertical direction, The vertical pressing chamber has a square cross section formed from the rear wall, left and right side walls, and the front wall, and an openable / closable door is provided on the front wall side to form an inlet, which is the front of the pressing chamber. A vertical crusher for plastic molding boxes, which is also used as a wall. 2. The vertical crusher for a plastic molding box according to claim 1, wherein a side cross section of the pressing plate is formed in a substantially arc shape so as to be close to a rotation locus circle of the crushing blade.

Images