JP4880215B2 - Cutting apparatus and cutting method - Google Patents

Description

  The present invention relates to a cutting device for a soft cylindrical member, a soft cylindrical member including a hard member inside a washing tub of a used washing machine in a recycling plant, or a part of a soft cylindrical member including a liquid in part. The present invention relates to a liquid recovery, purification, and drying apparatus.

  As the cylindrical member cutting device, there is a hard cylindrical member cutting device such as a compressor. In the disassembling apparatus that cuts the sealed container of the hermetic electric compressor into four pieces, the blade unit has four blades. The cutting tool unit has two divided cutting tool units each having two cutting tools, and is fixed to the cutting tool unit. One split blade unit is fixed, while the other split blade unit is connected to a cylinder and is configured to be freely movable by the operation of the cylinder.

When cutting the compressor, it can be automatically cut while rotating the pedestal by applying a strong pressure at a level that can cut the hard member with the cylinder and pressing the divided blade unit (for example, Patent Document 1). reference).
JP 2001-193651 A

  However, when the cutting object (workpiece) is a soft cylindrical member having a different diameter, if the fixing method using the conventional cutting device is applied, the pressure is too strong and the workpiece is distorted, and the rotation center of the workpiece is the rotation center of the base. There is a problem that the cut surface is distorted.

  In addition, the distance measurement accuracy is poor and the cost is high even if the distance is detected and fixed by light or sound.

  When a soft cylindrical member with multiple structures such as a washing tub of a used washing machine and there is a hard material such as stainless steel inside, the position of the cylindrical soft member and the blade is controlled to a certain distance so that the blade is inside. It is necessary not to touch the hard member. In order to solve this, a distance sensor using light or sound is difficult to use for the same reason as described above. If a switch-type distance sensor is installed near the blade of the movable cutting machine, this problem can be solved. However, if the cylindrical soft member has irregularities, the distance sensor will collide with the protrusion and break during cutting. Or there was a problem that the cutting had to be stopped.

  Further, even if the distance between the blade and the workpiece is fixed by the distance sensor, there are cases where the distance between the outer cylindrical soft member and the inner hard member such as metal is different. It is assumed that the above-mentioned distance is different in the design of the washing tub of the used washing machine. However, even if the blade collides with the internal hard member, there is a drawback that it is worn out if there is no function to automatically stop.

  In the case of a soft cylindrical member partially containing a liquid such as saturated salt water like a washing tub taken out from a used washing machine, there was no mechanism for recovering the liquid. The washing tub is generally composed mainly of a plastic member that can be recycled, such as polypropylene (PP). However, it is difficult to crush in operation if it contains high-concentration salt that causes rust like saturated salt water, and it is assumed that the liquid is recovered in advance, but the recovered liquid is not effectively used and discarded. There was a problem of cost.

  Further, when collecting the liquid, the liquid is contaminated by the collecting method, so that it has to be purified for reuse.

  Furthermore, a useful dry salt can be obtained by drying like salt water, but there was no function of drying the liquid.

  Furthermore, if a single material such as PP obtained by cutting remains cylindrical, subsequent transportation costs and material recycling costs at the client are required.

  The present invention has been made to solve the above-mentioned problems, and can easily fix and cut a cylindrical soft member, and can be cut without any trouble even if the outer surface has irregularities, and there is a hard member inside. However, it is possible to cut the blade without being worn, and to make effective use of the liquid when there is liquid inside.

  Moreover, it aims at reducing the transportation cost after a shipment, and the recycling processing cost by crushing the plastic of the obtained single material.

  The cutting device according to the present invention has a function of placing and rotating a cutting object, and a fixing device main body that places the center of the cutting object in accordance with the rotation center, and 2 installed on the fixing device main body. More than one fixed arm, a contact detection sensor for detecting that the fixed arm is in contact with the fixed arm, and a movable cutting machine provided independently of the fixing device main body. Features.

  With the above-described configuration, the cutting device according to the present invention can be fixed so that the cutting object is not distorted during cutting.

Embodiment 1 FIG.
1 to 6 are diagrams showing Embodiment 1, FIG. 1 is a plan view showing a cutting device, FIG. 2 is an elevation view of the cutting device, and FIG. 3 is a case where liquid is collected from a cut cylindrical soft member. 4 is a view when purifying the collected liquid in FIG. 3, FIG. 5 is a view when drying the collected and purified liquid in FIG. 4, and FIG. 6 is a single member cylindrical shape cut and collected. It is a figure which shows crushing a soft member.

  The cutting device in FIGS. 1 and 2 includes a fixing device body 1 having a function of placing and rotating an elastic work 6 (washing machine water tank), two or more fixing arms 2 installed on the fixing device body 1, There is an independent cutting machine 3 that is not installed on the fixing device main body 1, and the fixed arm 2 includes a contact detection sensor 5 that can detect contact with the arm.

  First, the center of the cylindrical elastic work 6 is installed in accordance with the rotation center of the fixing device main body 1. Two or more fixed arms 2 that are equidistant from the center of rotation of the fixing device body 1 are moved toward the elastic work 6 by equal distances, and the contact detection sensor 5 provided on the fixed arm 2 comes into contact with the elastic work 6. By the way, the fixed arm 2 stops.

  The contact detection sensor 5 is set to be turned on when the elastic workpiece 6 is clamped with a force that does not move and the cylindrical soft member does not deform during cutting. Thereby, the elastic workpiece 6 can be fixed with a necessary and sufficient force without the cylindrical soft member being displaced from the center of the rotating portion of the fixing device main body 1.

  The cutting device is provided with a movable cutting machine 3 independent of the fixing device main body 1, and after the elastic work 6 is fixed by the fixing device main body 1, the cutting machine 3 is moved toward the elastic work 6. When the distance sensor provided on the movable arm 3a of the cutting machine 3 detects that the distance between the cutting blade 4 and the elastic work 6 is constant at the initial stage of cutting, the distance sensor is directed toward the elastic work 6 of the cutting machine 3. The movement stops.

  Thereafter, the fixing device main body 1 rotates to cut a predetermined portion of the elastic workpiece 6. At this time, the distance sensor provided in the movable arm 3a of the cutting machine 3 that has finished its role moves in the opposite direction to the elastic work 6 so that the elastic work 6 can be cut even if there is a protrusion.

  In addition, even if the cylindrical soft member is multi-layered like a washing tub of a used washing machine and there is a hard member made of metal such as stainless steel inside, the distance between the blade and the work is kept constant as described above. There is little risk of cutting hard members.

  Even if the distance between the blade and the workpiece is fixed, the blade may come into contact with the hard member, so attach an overload detection sensor such as an electric current to the blade drive unit to cut the hard member. Since the load such as the current value rises higher than usual, the disconnection can be stopped by detecting this signal.

  The balancer part of the washing tub of the washing machine contains saturated brine such as saturated saline. It is desirable to collect this liquid in consideration of recycling and crushing of the material after cutting. As shown in FIG. 3, by adding a punching device 7 and a liquid 8 (brine) recovery tank 9 to the cutting device, the liquid 8 can be recovered and separated from a plastic member or a metal member.

  The saturated salt water is generally not contaminated because salts are only dissolved in tap water, but the liquid 8 recovered as described above is a complex such as swarf and surrounding dust or rust when drilling. There are cases where it is contaminated by factors. As shown in FIG. 4, pure saturated salt water is recovered by using a purification device 10 such as a filter to obtain clear saturated salt water.

Although the saturated salt water after purification obtained by the above method is clear, when shipped to reuse the saturated salt water, it is liquid and handling is poor, and there is a possibility that the transportation cost becomes high. In this case, as shown in FIG. 5, a drying device 11 is further added to dry the saturated salt water and collect the dried salts. Due to the drying action, in the case of saturated saline, 25% dry salt can be obtained in a weight ratio, resulting in a weight loss of 75%.
The liquid recovered in the recovery tank 9 before purification may be dried by the drying device 11.

  On the other hand, when recycling a single plastic cylindrical soft member such as polypropylene (PP) obtained by cutting, if the cut member is still bulky and shipped from a recycling plant or the like, There are problems such as poor handling. For this reason, as shown in FIG. 6, using a shear type crushing device 12 or the like for crushing a single cylindrical soft member cut and collected, it is crushed into plastic pieces of the order of several mm, usually called flakes. Therefore, it is possible to improve the handling property in the subsequent recycling plant and reduce the transportation cost at the time of shipment.

It is a figure which shows Embodiment 1, and is a top view which shows a cutting device. It is a figure which shows Embodiment 1, and is an elevational view of a cutting device. It is a figure which shows Embodiment 1, and is a figure when collect | recovering liquids from the cut cylindrical soft member. FIG. 5 shows the first embodiment, and is a view when the liquid collected in FIG. 3 is purified. FIG. 5 shows the first embodiment, and is a view when the liquid collected and purified in FIG. 4 is dried. It is a figure which shows Embodiment 1, and is a figure which shows crushing the cylindrical soft member of the single member cut | disconnected and collect | recovered.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Fixing device main body, 2 Fixed arm, 3 Cutting machine, 4 Cutting blade, 5 Contact detection sensor, 6 Elastic work, 7 Drilling device, 8 Liquid, 9 Collection tank, 10 Purification device, 11 Drying device, 12 Crushing device.

Claims (8)

A fixing device main body having a function of placing and rotating a cylindrical cutting object, and placing the center of the cutting object in accordance with the rotation center;
Two or more fixing arms installed on the fixing device main body at an equal distance from the rotation center ;
A contact detection sensor that is provided on the fixed arm and detects that the object to be cut contacts the fixed arm;
A movable cutting machine provided independently of the fixing device main body ,
The fixing device main body moves the two or more fixed arms toward each other at an equal distance toward the cutting object, and the cutting object comes into contact with the moved fixed arm and the cutting object does not deform. A cutting apparatus, wherein the movement of the fixed arm is stopped when the contact detection sensor detects that the fixed arm is clamped by force . A fixing device main body having a function of placing and rotating a cutting object, and placing the cutting object in accordance with the center of rotation;
Two or more fixing arms installed on the fixing device body;
A contact detection sensor that is provided on the fixed arm and detects contact with the fixed arm;
A movable cutting machine provided independently of the fixing device main body,
The cutting machine has a movable arm provided with a distance sensor and a cutting blade,
The cutting machine moves the movable arm in the direction of the cutting object until the distance sensor detects that the cutting blade and the cutting object are at a predetermined distance, and the distance sensor When it is detected that the cutting blade and the cutting object are at a predetermined interval, the movement of the movable arm is stopped,
The cutting apparatus, wherein the cutting device moves the distance sensor backward from the cutting object after stopping the movement of the movable arm toward the cutting object .   The cutting device according to claim 2, wherein an overload detection sensor is provided in a drive unit of the cutting blade of the cutting machine, and automatically stops when a monitor value of the overload detection sensor exceeds a certain value.   The cutting device is provided with a drilling device and a liquid recovery tank, and after fixing the object to be cut in which the liquid is sealed, the liquid sealing portion is drilled by the drilling device, and the liquid is recovered in the recovery tank. The cutting device according to any one of claims 1 to 3.   The cutting device according to claim 4, further comprising a device for purifying the collected liquid.   6. The cutting apparatus according to claim 4, further comprising a drying device that dries the collected liquid or the purified liquid.   The cutting device according to any one of claims 1 to 6, further comprising a crushing device for crushing a cylindrical soft member made of a single material cut by the cutting machine for the cutting object. In a cutting method for cutting an object to be cut,
Installing the center of the cutting object in accordance with the rotation center of the fixing device body; and
The fixing device main body moving two or more fixing arms located at an equal distance from the rotation center of the fixing device main body toward the cutting object;
When the contact detection sensor provided on the moved fixed arm is in contact with the object to be cut and clamped without being deformed , the fixing device body is a step of Ru to stop the fixed arm,
A step in which a cutting machine independent of the fixing device main body moves a movable arm provided with a distance sensor and a cutting blade toward the cutting object;
When the distance sensor provided on the movable arm detects that the distance between the cutting blade provided on the movable arm and the object to be cut is a predetermined distance, the cutting machine moves the movable arm to the movable arm. A step of stopping and the cutting machine retracting the distance sensor in a direction opposite to the cutting object;
The fixing device main body rotating the fixing device main body, and the cutting machine cutting the predetermined portion of the cutting object installed in the rotating fixing device main body with the cutting blade. A cutting method characterized by that.

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