JP6763516B2 - Metal cuttings compression device - Google Patents

Description

The present invention mainly relates to a metal cutting waste compression device for compressing metal cutting chips generated during metal cutting and solidifying them 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 these chips are collected for reuse. However, chips generated by cutting have various shapes and dimensions such as ribbon-shaped, spiral / coil-shaped, spiral-shaped, curly / curled-shaped, and chip-shaped, and handling becomes complicated as they are. The chips are compacted into a predetermined shape using a compression device as shown in Patent Document 1 below.

Japanese Unexamined Patent Publication No. 2003-311576

However, in this type of chip compression device, since the chips have various shapes and dimensions, the chips do not smoothly enter the compression molding chamber. Therefore, the inner diameter of the compression molding chamber is increased to various sizes. Chips of form and size must be forced into the compression molding chamber, and a large compression power corresponding to the large compression area whose diameter is the inner diameter of the compression molding chamber is required, resulting in an increase in size of the device. There was a problem.

An object of the present invention is to solve these problems, to capture and crush the chips discharged from the machine tool immediately after the discharge, reduce the size of the chips, and accumulate the chips in the compression molding chamber. It is not necessary to increase the inner diameter, and it is possible to obtain a compression molded product with a small amount of power, and even with strong curled chips and chips of high-strength materials, it is always appropriate without enlarging the equipment. An object of the present invention is to provide a metal cutting chip compression device capable of processing a large amount of chips.

[Solution 1]
As described in claim 1, the metal cutting waste compression device of the present invention includes a hopper that receives the input metal cutting waste, a crushing mechanism that crushes the metal cutting waste sent from the hopper, and a crushed metal. It is provided with a transfer mechanism that feeds the cutting chips into the compression cylinder mechanism and a compression cylinder mechanism that compresses the transferred metal cutting chips in the compression molding chamber, and the crushing mechanism usually rotates inward in opposite directions. A first drive mechanism including a pair of rotating shafts, a pair of crushing blades having a thickness in the axial direction of each of the rotating shafts, and a first electric motor for driving one of the rotating shafts, and the other. A second drive mechanism composed of a second electric motor for driving a rotating shaft is provided, and the crushing blade group is a second drive mechanism that engages with a crushing blade group connected to the first drive mechanism in a scissors shape. A control mechanism that is composed of a series of crushing blade groups, is provided with a detection mechanism that detects the amount of metal cutting chips that pass through the pair of crushing blade groups, and controls the operation of each electric motor that drives the pair of crushing blade groups. the provided, wherein when it is detected that many passes of the metal cutting chips by the detection mechanism, after temporarily stopping the motor of the respective, the normal rotation direction to drive in the opposite direction, continuing each motor Is configured so that one is temporarily driven in the normal rotation direction and the other is temporarily driven in the direction opposite to the normal rotation direction .

According to the invention according to claim 1, a hopper that receives the input metal cutting chips, a crushing mechanism that crushes the metal cutting chips sent from the hopper, and a transfer that sends the crushed metal cutting chips to the compression cylinder mechanism. It is provided with a mechanism and a compression cylinder mechanism for compression-molding the transferred metal cutting chips in a compression molding chamber, and the crushing mechanism includes a pair of rotating shafts that normally rotate inward in opposite directions, and each rotation. A first drive mechanism consisting of a first electric motor that has a pair of crushing blades having a thickness in the axial direction of the shaft and drives one of the rotating shafts, and a second electric motor that drives the other rotating shaft. The crushing blade group is composed of a crushing blade group connected to the first drive mechanism and a crushing blade group connected to the second drive mechanism engaged in a scissors shape. A detection mechanism for detecting the amount of metal cutting chips passing through the pair of crushing blade groups is provided, and a control mechanism for controlling the operation of each electric motor for driving the pair of crushing blade groups is provided, and the detection mechanism is used for metal cutting. when it is detected that there are many passing amount of debris, after temporarily stopping the motor of the respective, the normal rotation direction to drive in the opposite direction, subsequently the other one of each of the motor in the normal direction of rotation Is configured to be temporarily driven in the direction opposite to the normal rotation direction .

As a result, even if chips that require a large amount of power required to crush strong curled chips or chips of high-strength materials are put into the hopper, the crushing blade is always provided with an appropriate amount of chips. Since it can be sent, it can be done by keeping the required crushing torque low, which has the effect of obtaining a small and inexpensive device. In addition, since many crushed chips are appropriately dispersed without being collected in the transfer mechanism, there is an effect that efficient processing can be performed.

Top view showing an embodiment of the present invention A front view showing an embodiment of the present invention with the panel removed and piping and wiring omitted. Left side view showing an embodiment of the present invention with the panel removed and piping and wiring omitted. Top view showing the crushing mechanism of one Example of the present invention Left side view showing the crushing mechanism of one embodiment of the present invention. Cross-sectional view of the crushing mechanism of one embodiment of the present invention (AA cross-sectional view of FIG. 4) Cross-sectional view of the crushing mechanism of one embodiment of the present invention (BB cross-sectional view of FIG. 5) Flow chart showing control of crushing mechanism according to an embodiment of the present invention

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 8.

[Overall configuration of metal cuttings compression device]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the metal cutting chips compression device of the present invention has a hopper 2 that receives chips discharged from a machine tool, and a crushing mechanism that is directly below the hopper 2 and crushes the chips to make them smaller. 3, a transfer mechanism 4 that transfers crushed and reduced chips to a compression cylinder mechanism 5, a compression cylinder mechanism 5 that compresses and discharges chips, and a hydraulic pump that generates hydraulic pressure in the compression cylinder mechanism 5. A motor device 21, a hydraulic pressure 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 are provided.

[Hopper, outer frame and panel]
As shown in FIGS. 1 to 3, the metal cutting waste compression device 1 of the present invention has a substantially cubic shape and is surrounded on the outside by a shielding panel (not shown), and a hydraulic cylinder portion of the compression cylinder mechanism 5 is above the shielding panel. It has a prominent appearance. Outer frame members are assembled by welding or the like at 12 mating portions between the shielding panels in order to support the weight and load of the structure. Each shielding panel is screwed to an outer frame member facing each other with a screw or the like, but a structure in which a part of the shielding panel is hooked on the outer frame member may be used. 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 apparatus 1. Further, a reinforcing member for supporting the crushing mechanism 3 is added to the middle stage of the apparatus 1. A hopper 2 for temporarily storing chips is formed on a top plate as a shielding panel on the upper part of the apparatus 1. The hopper 2 may be provided with an extension hopper member whose opening is further enlarged upward.

[Crushing mechanism]
As shown in detail in FIGS. 4 to 7, the crushing mechanism 3 is powered by two rotating shafts 31, a bearing 35 that supports each shaft, and a crushing motor device 24 via a rotating shaft 31 and a key or the like. A plurality of driven crushing blades 32, a gap regulating member 33 that regulates the distance between adjacent crushing blades 32, and a crushing motor device that is attached to one end of a rotating shaft 31 and drives the crushing blades 32 via a key or the like. It is composed of a box 34 to which a bearing 35 and a crushing motor device 24 are mounted. The box 34 is attached to the reinforcing member of the outer frame as a whole of the crushing mechanism 3 by a tightening bolt (not shown).

The crushing blade 32 has a thick disk shape, and the outer diameter 38 of the disk is provided with a plurality of protrusions 37 for catching chips. The crushing blades 32 rotate inward on the rotation shaft 31 via a key or the like, so that the chips stored in the hopper 2 are reliably captured by the protrusions 37 on the outer circumference. The captured chips are sheared and crushed at the corners of the disc outer diameters 38 of the adjacent crushing blades 32.

The crushing blades 32 rotate inward on the rotation shaft 31 via a key or the like, so that chips falling from the hopper 2 directly above the crushing blades 2 can be reliably captured as shown in FIGS. 2 to 3. Is formed, sheared, crushed, and dropped onto the transfer mechanism 4 directly below.

Adjacent crushing blades 32 are attached to each other by a gap regulating member 33. The outer diameter of the gap regulating member is set so as to secure a gap with the circumscribed circle diameter of the protrusion 37 provided on the facing crushing blade 32. The crushing blade 32 and the gap regulating member 33 may be integrally formed, or all the crushing blades 32 and the gap regulating member 33 on the rotating shaft 31 may be integrally formed.

One crushing motor device 24 is directly attached to the box 34 so that the main shaft is orthogonal to one rotating shaft 31, the main shaft of the other crushing motor device 24 is orthogonal to the other rotating shaft 31, and one crushing motor device. It is arranged in the same direction as 24 on the end side of the rotating shaft without one of the crushing motor devices 24, and is attached to the box 34 via the adapter 51. A bearing 35 that supports the rotating shaft 31 is interposed inside the adapter 51. In the vicinity of the bearing 35 of the rotating shaft 31, a pulsar ring 52 having an uneven outer circumference such as a gear and a rotation detection sensor 53 for detecting the rotation of the pulsar ring are provided.

The control of the device when chips are charged is as shown in FIG. Normally, both the first electric motor and the second electric motor are driven by a control mechanism 6 (not shown) so as to rotate in the normal direction as shown in (A), that is, the crushing blades rotate inward with each other. When a large amount of chips are thrown in, the load torque, drive current, rotation speed, etc. of the crushing motor device 24 fluctuate. In the embodiment, the pulse output of the rotation detection sensor 53 is delayed as shown in (B). As a result, both the first electric motor and the second electric motor are stopped as shown in (C). Instead of the pulse output of the rotation detection sensor 53, the electric motor may be stopped depending on the load torque of the first electric motor or the second electric motor or the degree of increase in the drive current.

After that, as shown in (D), the first and second electric motors are reversed, that is, the crushing blades driven by these electric motors are rotated outward. At this time, the charged chips are pushed back by the crushing blade and move upward in the apparatus. At the stage where it can be confirmed by (E) that a certain period of time has passed, the first and second electric motors are stopped as in (F). Needless to say, (E) may be controlled not by time but by rotation angle.

After that, as shown in (G), the first electric motor is rotated forward and the second electric motor is reversed. At this time, the charged chips move from the side of the first motor to the side of the second motor. As a result, the tip portion that has been engaged with the crushing blade of the charged chips is loosened and easily crushed. (H) stops the first and second electric motors as in (I) at the stage where it can be confirmed that a certain period of time has passed.

After that, as shown in (J), the first electric motor is reversed and the second electric motor is rotated forward. At this time, the charged chips move from the side of the second motor to the side of the first motor. At the stage where it can be confirmed by (K) that a certain period of time has passed, the first and second electric motors are stopped as in (L). Following this, the normal operation shown in (A) is restored.

It should be noted that these series of operations (D) to (F), (G) to (I), and (J) to (L) are merely examples, and any one of them may be selected or combined. May be configured to work

[Transfer mechanism]
As shown in FIGS. 2 to 3, a triangle or a triangle in a plan view that is wide so as to receive all chips falling from the crushing blade 32 and narrows toward the opening provided in the upper part of the compression forming chamber 12. It is composed of a pentagonal transfer plate 71, a plate 72 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 be bolted or integrated. 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 the opening provided in the upper part of the compression molding chamber 12. A vertical wall for preventing chips from popping out from the transfer plate 71 is provided on the edge of the transfer plate 71 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 chips that have been crushed and fallen are collected in the V-shaped groove of the transfer plate 71, and are sequentially opened by an inclination toward an opening provided in the upper part of the compression molding chamber 12. It is accumulated inside the compression molding chamber 12 from the portion.

[Compression cylinder mechanism]
As shown in FIGS. 2 to 3, the compression cylinder mechanism 5 includes a hydraulic cylinder located at the upper part of the apparatus 1, a compression plunger 11 that operates integrally with a hydraulic piston (not shown) in the hydraulic cylinder, and an upper part. A compression molding chamber 12 having an opening into which chips are put into, a bottom plate 13 that can switch the presence or absence of a bottom hole 14, and a switching cylinder 15 that is directly under the bottom plate 13 and is attached to one side, depending on the hydraulic pressure of the hydraulic cylinder. A reaction force member 18 that receives the generated compressive force, four columns that connect the hydraulic cylinder and the reaction force member 18, and a hydraulic pressure control valve 17 that is attached to a part of the hydraulic pump / motor device. It is configured. The compression plunger 11 and the compression molding chamber 12 are fitted with a slight gap at the upper part in the initial position so that the misalignment does not occur during assembly.

Chips sent from the transfer mechanism 4 are charged through the 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 the compression molding chamber 12 is detected to be full of chips by a detector (not shown) that detects the accumulated state of the metal cutting chips 22 (referred to as chips), the injection of chips is stopped and the compression step is performed. Move to. The compression is performed by the compressive force of the hydraulic pressure of the hydraulic cylinder. The compression molding is completed by stopping the compression operation when the hydraulic pressure detector (not shown) of the hydraulic pressure cylinder detects that the specified hydraulic pressure corresponding to the relief pressure has been reached.

The above-mentioned examples are not limited to them as the present invention, but are exemplified for explanation, and are modified and modified as long as they do not contradict the technical idea of the present invention that can be recognized by those skilled in the art from the description of the claims. Addition is possible.

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 regulating member 34 Box 35 Bearing 37 Protrusion 38 Disc outer diameter (tooth bottom circle diameter of protrusion)
51 Adapter 52 Pulsar ring 53 Rotation detection sensor 71 Transfer plate 72 Plate

Claims (1)

A hopper that receives the input metal cutting chips, a crushing mechanism that crushes the metal cutting chips sent from the hopper, a transfer mechanism that sends the crushed metal cutting chips to the compression cylinder mechanism, and the transferred metal cutting chips. In a metal cutting chip compressor equipped with a compression cylinder mechanism for compression molding in a compression molding chamber, the crushing mechanism has a pair of rotating shafts that normally rotate inward in opposite directions and axial directions of the respective rotating shafts. A first drive mechanism having a pair of crushing blades having a thickness and consisting of a first electric motor for driving one of the rotating shafts, and a second electric motor for driving the other rotating shaft. The crushing blade group is provided with two drive mechanisms, and the crushing blade group is composed of a crushing blade group connected to the first drive mechanism and a crushing blade group connected to the second drive mechanism engaged in a scissors shape, and the pair of crushing blades. A detection mechanism for detecting the amount of metal cutting chips passing through the group is provided, and a control mechanism for controlling the operation of each electric motor for driving the pair of crushing blade groups is provided. The detection mechanism measures the amount of metal cutting chips passing through. when it is detected that often, after temporarily stopping the motor of the respective, the normal rotation direction to drive in the opposite direction, continuing one each of the motor other normal rotation direction in a normal rotation direction A metal cutting chip compressor characterized in that it is temporarily driven in the opposite direction to the above.

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