JP6750181B1 - Metal cutting waste compression device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a large compressive force without increasing the size of an apparatus without using a large hydraulic compression cylinder or a large hydraulic system in solidification of metal cutting chips requiring a large compressive force. SOLUTION: The maximum acting pressure on a hydraulic compression cylinder is increased by interposing a pressure boosting cylinder mechanism in which hydraulic cylinders having different diameters are arranged so as to face each other between a hydraulic cylinder that generates a compressive force and a hydraulic source. To do. [Selection diagram]

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal cutting waste compression device for mainly compressing metal cutting waste generated during metal cutting to harden it into a predetermined shape.

In the metal cutting process, a large amount of metal cutting chips (hereinafter referred to as chips) are discharged from the machine tool, and the chips are collected for reuse. However, the chips produced by the cutting process have various shapes and sizes such as ribbon, spiral/coil, spiral, curled/curled, and chip shapes, which makes handling complicated as they are. The chips are hardened into a predetermined shape using a compression device as shown in Patent Document 1 below.

Japanese Patent Laid-Open No. 2003-311576

However, in this type of chip compressing device, since the chips have various shapes and sizes, the chips do not smoothly enter the compression molding chamber. It is necessary to forcibly push chips of the shape and size into the compression molding chamber, which requires a large power for compression commensurate with the large compression area with the inner diameter of the compression molding chamber as the diameter, resulting in an increase in the size of the device. There was a problem.

An object of the present invention is to solve these problems and to provide a metal cutting waste compression apparatus that can obtain a compression molded product with a small amount of compression power.

[Solution 1]
As described in claim 1, the metal cutting waste compression apparatus of the present invention has a hopper for receiving the introduced metal cutting waste, a crushing mechanism for crushing the metal cutting waste sent from the hopper, and a crushed metal. In a metal cutting waste compression device equipped with a transfer mechanism that feeds cutting waste to a compression cylinder mechanism and a compression cylinder mechanism that compresses and transfers the transferred metal cutting waste in a compression molding chamber, cylinder mechanisms of different diameters are made to face each other in series. The compression cylinder mechanism is provided with a connected pressure increasing cylinder mechanism, and an oil passage connecting between the compression cylinder and the solenoid opening/closing valve for controlling the hydraulic pressure required for compression is branched, and the branched oil passage is one of the pressure increasing cylinder mechanisms. It is configured to be connected to a cylinder side having a small diameter, and the cylinder side having a large diameter of the pressure boosting cylinder mechanism is connected to a hydraulic power source and an oil reservoir via an electromagnetic opening/closing valve other than the electromagnetic opening/closing valve. That is what I did.

[Solution 2]
As described in claim 2, the metal cutting waste compression device of the present invention is the metal cutting waste compression device according to claim 1, wherein the compression cylinder mechanism includes a detection mechanism for detecting completion of compression, and At the stage where the detection mechanism detects the completion of the compression of the metal cutting chips, the oil passage connected between the compression cylinder and the hydraulic power source and the oil reservoir is closed by the electromagnetic opening/closing valve, and at the same time, the diameter of the pressure increasing cylinder mechanism is increased. The electromagnetic on-off valve interposed between the large cylinder side and the oil pressure source and the oil reservoir is operated to apply the increased oil pressure to the compression cylinder mechanism.

[Solution 3]
According to a third aspect of the present invention, there is provided a metal cutting waste compression apparatus according to the second aspect of the present invention, wherein the pressure-increasing cylinder mechanism has a piston built in a cylinder having a large diameter. It is equipped with a detector that detects that the piston has moved to the maximum and a detector that detects that it has moved to the maximum.When the detector detects that the piston has moved to the maximum, it is connected between the compression cylinder and the hydraulic source and the oil reservoir. The solenoid on-off valve of the oil passage is operated to open, and at the same time, the solenoid on-off valve interposed between the large-diameter cylinder side of the pressure-increasing cylinder mechanism and the hydraulic power source and the oil reservoir is operated to operate the solenoid valve. After the hydraulic pressure is applied in the direction of returning the cylinder with the large diameter to the original position, the oil passage connected between the compression cylinder and the hydraulic pressure source and the oil reservoir is closed again by the solenoid opening/closing valve, and at the same time, the pressure boosting cylinder. Hydraulic pressure increased by the compression cylinder mechanism by causing hydraulic pressure to act on the solenoid opening/closing valve interposed between the large diameter cylinder side of the mechanism and the hydraulic pressure source and the oil reservoir in the direction in which the piston is maximally displaced. Is configured to act.

According to the first aspect of the invention, the hopper for receiving the thrown metal cutting chips, the crushing mechanism for crushing the metal cutting chips sent from the hopper, and the transfer for feeding the crushed metal cutting chips to the compression cylinder mechanism. In a metal cutting waste compression device having a mechanism and a compression cylinder mechanism for compression-molding the transferred metal cutting waste in a compression molding chamber, a pressure-increasing cylinder mechanism in which cylinder mechanisms having different diameters are opposed to each other and connected in series, In the compression cylinder mechanism, an oil passage that connects between the electromagnetic on-off valve that controls the hydraulic pressure required for compression and the compression cylinder is branched, and the branched oil passage is connected to the small diameter cylinder side of the booster cylinder mechanism. In the pressure-increasing cylinder mechanism, the cylinder side having a larger diameter is connected to the hydraulic pressure source and the oil reservoir via an electromagnetic opening/closing valve other than the electromagnetic opening/closing valve.

Therefore, when the hydraulic pressure supply source is the same, it takes a lot of time to complete the compression due to a large amount of hydraulic oil supply to move the piston using the compression cylinder having a large diameter. By using a compression cylinder that is not so large in diameter, compression can be completed once in a short time, and by connecting it to the pressure boosting cylinder mechanism, an equivalent compression molded product with less time loss can be obtained. Has the effect.

According to the invention of claim 2, the compression cylinder mechanism includes a detection mechanism for detecting the completion of compression, and at the stage when the detection mechanism detects the completion of compression of the metal cutting waste by the compression cylinder mechanism, the compression cylinder and the hydraulic pressure are detected. At the same time as closing the oil passage connected between the sources with the solenoid on-off valve, the solenoid valve on the cylinder side with a larger diameter of the pressure boosting cylinder mechanism and the solenoid on-off valve are activated to operate the compression cylinder mechanism. It is configured so that the increased hydraulic pressure is applied to.

As a result, it is possible to obtain a strong compression-molded product in a short time by further compressing the metal chips, which have been compressed once, by using the compression cylinder having the small diameter. Even if such a strong compression molded product is required, it is possible to use a compression cylinder with a large diameter and connect it to the booster cylinder mechanism without taking a long time to operate until the compression is completed. This has the effect of obtaining a compression-molded product equivalent in time.

According to the invention of claim 3, the pressure-increasing cylinder mechanism includes a detector for detecting that the piston contained in the cylinder having a large diameter is in the original position and a detector for detecting that the piston has moved to the maximum position. When the detector detects that the piston has moved to the maximum, at the same time as opening the solenoid valve of the oil passage connected between the compression cylinder and the hydraulic power source and oil reservoir, After operating the solenoid on-off valve installed between the large cylinder side and the hydraulic pressure source and reservoir tank to return the small diameter cylinder to its original position, it was connected again between the compression cylinder and the hydraulic pressure source. The oil passage is closed by the solenoid opening/closing valve, and at the same time, the solenoid opening/closing valve interposed between the cylinder side having the larger diameter of the pressure increasing cylinder mechanism and the hydraulic pressure source and the oil reservoir is operated to operate the compression cylinder. It is configured to apply the increased hydraulic pressure to the mechanism.

As a result, when a strong compression molded product is required, when connecting to the pressure boosting cylinder mechanism and applying pressure, even if there is still room to press even if the large diameter cylinder makes a full stroke, the device can be It is not necessary to use a pressure increasing cylinder mechanism having a long overall length that does not fit, and it is possible to obtain a compression-molded product equivalent to a pressure increasing cylinder mechanism having a long overall length by simply reciprocating the pressure increasing cylinder mechanism.

The top view which shows one Example of this invention A front view showing an embodiment of the present invention with a panel removed and piping and wiring omitted A left side view showing an embodiment of the present invention with a panel removed and piping and wiring omitted The top view of the crushing mechanism which shows one Example of this invention. Hydraulic circuit diagram of a compression mechanism showing an embodiment of the present invention

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

[Overall structure of metal cutting waste compression device]
Embodiments of the present invention will be described below based on the drawings.
As shown in FIGS. 1 to 3, the metal cutting waste compression apparatus of the present invention includes a hopper 2 for receiving chips discharged from a machine tool, and a crushing mechanism located immediately below the hopper 2 for crushing the chips to make them smaller. 3, a transfer mechanism 4 that transfers the crushed and reduced chips to the compression cylinder mechanism 5, a compression cylinder mechanism 5 that compresses and discharges the chips, and a hydraulic pump/motor that generates the hydraulic pressure of the compression cylinder mechanism 5. The device 21 is provided with a hydraulic control valve 17 for controlling hydraulic pressure, a control unit 6 (not shown), an outer frame for supporting a structure, and a panel for shielding the inside.

[Hopper, outer frame and panel]
As shown in FIGS. 1 to 3, the metal cutting waste compression apparatus 1 of the present invention is substantially cubic in shape and is surrounded on the outside by a shielding panel (not shown), and the hydraulic cylinder portion of the compression cylinder mechanism 5 projects above it. It has an exterior appearance. An outer frame member is assembled by welding or the like at 12 joints between the respective shielding panels to support the weight and load of the structure. Although each shielding panel is screwed to the opposing outer frame member with a screw or the like, a part of the outer panel may be hooked on the outer frame member. A reinforcing member that supports the weight of the compression cylinder mechanism 5 is further added to the outer frame of the upper portion of the device 1. In addition, a reinforcing member that supports the crushing mechanism 3 is added to the middle stage of the device 1. A hopper 2 for temporarily storing chips is formed on a top plate as a shielding panel at the upper part of the device 1. It should be noted that the hopper 2 may be provided with an extension hopper member having a larger opening toward the top.

[Crushing mechanism]
As shown in FIG. 4, the crushing mechanism 3 includes two rotary shafts 31, bearings 35 that support the respective shafts, and a plurality of crushing motor devices 24 that are driven by the power of the crushing motor device 24 through the rotary shafts 31 via a key or the like. A crushing blade 32, a gap restricting member 33 for restricting a distance between the adjacent crushing blades 32, a crushing motor device 24 attached to one end of the rotating shaft 31 for driving the crushing blade 32 via a key, and a bearing 35. It is composed of a box 34 to which the crushing motor device 24 is attached. The box 34 is attached to the reinforcing member of the outer frame as a whole by the crushing mechanism 3 by a tightening bolt (not shown).

[Transfer mechanism]
As shown in FIGS. 2 to 3, it is wide enough to receive all the chips falling from the crushing blade 32 and narrows toward the opening provided in the upper part of the compression molding chamber 12 in a plan view. It is composed of a pentagonal transfer plate 71, a plate 72 that is welded to the transfer plate 71 that attaches the transfer plate 71 to the box 34, and bolts that connect the plate 72 and the box 34. Although the plate 72 has a welded structure with the transfer plate 71, it may have a bolt connection or an integral structure. Further, the plate 72 and the box 34 may have a welded structure instead of the bolt connection. The transfer plate 71 is attached so as to be inclined toward an opening provided in the upper part of the compression molding chamber 12. At the edge of the transfer plate 71, a vertical wall that prevents chips from jumping out of the transfer plate 71 is provided at a predetermined height in a substantially vertical direction.

The chips stored in the hopper 2 and crushed through the crushing mechanism 3 fall onto the transfer plate 71. The transfer plate 71 has a V-shaped cross section, and the chips that have been crushed and dropped are collected in the V-shaped groove of the transfer plate 71, and are sequentially opened by the inclination toward the opening provided in the upper part of the compression molding chamber 12. Part is accumulated inside the compression molding chamber 12.

[Compression cylinder mechanism]
As shown in FIGS. 2 to 3, the compression cylinder mechanism 5 includes a hydraulic cylinder located above the device 1, a compression plunger 11 that operates integrally with a hydraulic piston (not shown) in the hydraulic cylinder, and a chip above. A compression molding chamber 12 having an opening through which is charged, a bottom plate 13 that can switch the presence or absence of a bottom hole 14, and a switching cylinder 15 that is directly below the bottom plate 13 and is mounted on one side. It is composed of a reaction force member 18 for receiving, four columns for connecting the hydraulic cylinder and the reaction force member 18, and a hydraulic control valve 17 attached to a part of the hydraulic pump/motor device. The compression plunger 11 and the compression molding chamber 12 are fitted together with a slight gap at the upper part in the initial position so that misalignment does not occur during assembly.

The chips sent from the transfer mechanism 4 are thrown in through an opening provided in the upper part of the compression molding chamber 12. At this time, the bottom plate 13 capable of switching the presence or absence of the bottom hole 14 is switched to the state without the bottom hole. When it is detected that the compression molding chamber 12 is full of cutting chips by a detector (not shown) that detects the accumulation state of the metal cutting scraps 22 (referred to as cutting chips), the injection of cutting chips is stopped, and the compression process is performed. Move to. The compression is performed by the compression force of the hydraulic pressure of the hydraulic cylinder. Completion of the compression molding is performed by stopping the compression operation when a hydraulic pressure detector (not shown) of the hydraulic cylinder detects that the hydraulic pressure reaches a specified hydraulic pressure corresponding to the relief pressure.

[Pressurizing cylinder mechanism]
As schematically shown in FIG. 5, the pressure-increasing cylinder mechanism 51 includes a cylinder having a large diameter and a cylinder having a small diameter, which are opposed to each other. When hydraulic pressure acts on the chamber on the right side of a cylinder with a large diameter, the piston contained in the cylinder moves to the left. The piston rod connected to the piston moves leftward, and the piston contained in the small diameter cylinder interposed at the left end of the piston rod moves leftward. As a result, the output hydraulic pressure of the large diameter cylinder is increased by a value obtained by dividing the cross sectional area of the large diameter cylinder by the cross sectional area of the small diameter cylinder.

The compression operation of the compression cylinder mechanism 5 is performed in the upper chamber (the left chamber in FIG. 5) of the hydraulic cylinder by exciting the electromagnetic coil on the left side of the electromagnetic on-off valve connected to the compression cylinder mechanism 5 in FIG. It is done by the action of hydraulic pressure. When the compression of the electromagnetic coil is released when the compression is completed, the electromagnetic opening/closing valve returns to the neutral position and the oil passage of the hydraulic cylinder is closed.

Subsequent to this, by exciting the electromagnetic coil on the left side of the electromagnetic on-off valve connected to the pressure boosting cylinder mechanism 51, hydraulic pressure acts on the chamber on the right side of the cylinder having the large diameter. The piston contained in the large diameter cylinder moves to the left. A piston rod connected to the piston moves leftward and pushes a piston contained in a small diameter cylinder interposed at the left end of the piston rod leftward. As a result, a large output hydraulic pressure increased by a value obtained by dividing the cross-sectional area of the large diameter cylinder by the cross-sectional area of the small diameter cylinder acts on the upper chamber of the compression cylinder.

On the other hand, a detector that detects the maximum movement of the piston built in the large-diameter cylinder before the hydraulic pressure acting on the large-diameter cylinder of the booster cylinder mechanism reaches the maximum hydraulic pressure of the hydraulic source is When it detects that the maximum movement has occurred, it opens the electromagnetic opening/closing valve of the oil passage connected between the compression cylinder and the hydraulic pressure source, and at the same time, the cylinder side of the pressure boosting cylinder mechanism with the larger diameter and the hydraulic pressure source and reservoir. After operating the solenoid on-off valve interposed between the tank sources to return the large-diameter cylinder to the original position, the oil passage connected between the compression cylinder and the hydraulic source and the oil reservoir is again opened. At the same time as closing by the solenoid opening/closing valve, the solenoid opening/closing valve interposed between the cylinder side having the larger diameter, the hydraulic pressure source and the oil reservoir is operated to increase the pressure in the compression cylinder mechanism. It is configured so that the generated hydraulic pressure is applied.

As a result, even if the boosted hydraulic pressure acting on the compression cylinder mechanism has not reached a predetermined value due to the maximum movement of the piston built into the small diameter cylinder of the booster cylinder mechanism, By operating the mechanism a plurality of times, it is not necessary to change to a pressure increasing cylinder mechanism having a long overall length, and a compact metal cutting waste compression device can be obtained.

The above-mentioned embodiments are not limited to these as the present invention, but are merely examples for the purpose of explanation, and modifications and modifications are possible as long as they do not violate the technical idea of the present invention that can be recognized by those skilled in the art from the description of the claims. Can be added.

1 Metal Cutting Waste Compressor 2 Hopper 3 Crushing Mechanism 4 Transfer Mechanism 5 Compression Cylinder Mechanism 6 Control Unit 11 Compression Plunger 12 Compression Molding Chamber 13 Bottom Plate 14 Bottom Hole 15 Switching Cylinder 17 Hydraulic Control Valve 18 Reaction Force Member 21 Hydraulic Pump/Motor Device 22 Metal cutting chips (chips)
23 Compression Molded Product 24 Crushing Motor Device 31 Rotating Shaft 32 Crushing Blade 33 Gap Control Member 34 Box 35 Bearing 51 Pressure Boosting Cylinder Mechanism 71 Transfer Plate 72 Plate

Claims (3)

The hopper that receives the input metal cutting waste, the crushing mechanism that crushes the metal cutting waste sent from the hopper, the transfer mechanism that sends the crushed metal cutting waste to the compression cylinder mechanism, and the transferred metal cutting waste In a metal cutting waste compression device equipped with a compression cylinder mechanism for compression molding in a compression molding chamber, it is equipped with a boosting cylinder mechanism in which cylinder mechanisms of different diameters are opposed and connected in series. The oil passage connecting the electromagnetic on-off valve and the compression cylinder for controlling is branched, and the branched oil passage is connected to the smaller diameter cylinder side of the pressure boosting cylinder mechanism. The large metal cylinder side is connected to a hydraulic power source and an oil reservoir via an electromagnetic on-off valve different from the electromagnetic on-off valve. The compression cylinder mechanism includes a detection mechanism for detecting the completion of compression, and when the detection mechanism detects the completion of compression of the metal cutting waste by the compression cylinder mechanism, the oil connected between the compression cylinder, the hydraulic pressure source, and the oil reservoir. The passage is closed by an electromagnetic opening/closing valve, and at the same time, the electromagnetic cylinder opening/closing valve provided between the cylinder side with the larger diameter of the pressure increasing cylinder mechanism and the hydraulic power source and oil reservoir is operated to increase the pressure in the compression cylinder mechanism. The metal cutting debris compression device according to claim 1, wherein the device is configured to apply the generated hydraulic pressure. The booster cylinder mechanism is equipped with a detector that detects that the piston built in a cylinder with a large diameter is in the original position and a detector that detects the maximum movement, and that the detector detects that the piston has moved the maximum. When it is detected, the electromagnetic opening/closing valve of the oil passage connected between the compression cylinder and the hydraulic pressure source and the oil reservoir is operated to open, and at the same time, the cylinder side of the pressure-increasing cylinder mechanism having the large diameter and the hydraulic pressure source and After operating the solenoid on-off valve installed between the oil reservoirs to apply hydraulic pressure in the direction to return the large diameter cylinder to its original position, connect it again between the compression cylinder and the hydraulic source and oil reservoir. The oil passage is closed by the electromagnetic on-off valve, and at the same time, the piston is moved to the maximum by the electromagnetic on-off valve interposed between the cylinder side with the larger diameter of the pressure-increasing cylinder mechanism and the hydraulic power source and the oil reservoir. The metal cutting debris compression apparatus according to claim 2, wherein the hydraulic pressure is applied in a direction to cause the increased pressure to act on the compression cylinder mechanism.