JP2019217626A - Metal cutting chip compression apparatus - Google Patents

Abstract

To provide a metal cutting chip compression apparatus, capable of crushing metal cutting chips requiring large crushing power without enlarging the size of the apparatus, and continuing processing of a proper amount of metal cutting chips, even when a large amount of metal cutting chips are inputted.SOLUTION: Separate crushing motor apparatuses 24 are provided on respective ends of each revolving shaft 31 for driving a pair of crushing blade groups. When a large amount of metal cutting chips are inputted, the amount of metal cutting chips passing through a crusher is detected, and at least one revolving shaft is constituted so as to be driven to a direction opposite to a normal rotation direction.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a metal chip compression device for compressing metal chips generated during metal cutting and solidifying them into a predetermined shape.

In the metal cutting process, a large amount of metal chips (hereinafter referred to as chips) is discharged from a machine tool, and the chips are collected for reuse. However, the chips generated by the cutting process have various forms and dimensions such as ribbon, spiral / coil, spiral, shrink / curl, chip, etc. The swarf is hardened into a predetermined shape using a compression device as shown in Patent Document 1 below.

JP 2003-31576 A

However, in this type of chip compression device, since the chips do not smoothly enter the compression molding chamber because the chips have various forms and dimensions, the inside diameter of the compression molding chamber is increased, Chips of the form and dimensions must be forced into the compression molding chamber, and a large power for compression is required to match a large compression area having a diameter equal to the inner diameter of the compression molding chamber. There was a problem.

An object of the present invention is to solve these problems and to capture and crush chips discharged from a machine tool immediately after discharge, reduce the size of the chips, and accumulate the chips to reduce the size of the compression molding chamber. It is not necessary to increase the inner diameter, and it is possible to obtain compression molded products with small power.Also, even with strong curled chips and chips of high-strength material, it is always appropriate It is an object of the present invention to provide a metal chip compression device capable of processing a large amount of chips.

[Solution 1]
As described in claim 1, the metal swarf compression device of the present invention includes a hopper for receiving the input metal swarf, a crushing mechanism for crushing the metal swarf sent from the hopper, and a crushed metal. It has a transfer mechanism for feeding cutting chips into a compression cylinder mechanism, and a compression cylinder mechanism for compressing and forming the transferred metal chips in a compression molding chamber. The crushing mechanisms rotate inward, usually in opposite directions to each other. A pair of rotating shafts, a pair of crushing blades having a thickness in the axial direction of each of the rotating shafts, a first drive mechanism including a first electric motor driving one of the rotating shafts, and the other A second drive mechanism configured by a second electric motor that drives a rotating shaft, wherein the crushing blade group is engaged with the crushing blade group connected to the first drive mechanism in a scissor-like manner with the second drive mechanism. It consists of a series of crushing blades, A detection mechanism for detecting the amount of metal chips passing through the pair of crushing blades is provided, and a control mechanism for controlling the operation of each of the electric motors driving the pair of crushing blades is provided. When it is detected that the passage amount is large, each of the electric motors is temporarily stopped, and at least one of the rotation shafts is driven in a direction opposite to the normal rotation direction.

According to the first aspect of the present invention, a hopper for receiving the inputted metal swarf, a crushing mechanism for crushing the metal swarf sent from the hopper, and a transfer for feeding the crushed metal swarf to the compression cylinder mechanism A compression cylinder mechanism for compression-molding the transferred metal shavings in a compression molding chamber. The crushing mechanism includes a pair of rotating shafts that normally rotate inward in opposite directions to each other, and each of the rotating shafts. A first drive mechanism including a pair of crushing blade groups having a thickness in the axial direction of the shaft, the first drive mechanism including a first motor that drives one of the rotation shafts, and a second motor that drives the other rotation shaft Comprises a second driving mechanism, the crushing blade group is constituted by a crushing blade group connected to the first drive mechanism and a crushing blade group connected to the second drive mechanism engaging in a scissor shape, Pass through the pair of crushing blades A detection mechanism for detecting the amount of metal chips is provided, and a control mechanism for controlling the operation of each electric motor that drives the pair of crushing blades is provided.The detection mechanism detects that a large amount of metal chips is passed. In such a case, each of the electric motors is temporarily stopped, and at least one of the rotating shafts is driven in a direction opposite to a normal rotation direction.

As a result, the crushing blade always has an appropriate amount of swarf even when crushing chips, such as strong curling swarf and swarf of high-strength material, that require large power are thrown into the hopper. Since it can be sent, the required crushing torque can be kept low, so that a small and inexpensive device can be obtained. In addition, since many crushed chips are appropriately dispersed without gathering in the transfer mechanism, there is an effect that efficient processing can be performed.

FIG. 2 is a plan view showing one embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an embodiment of the present invention, in which a panel is removed and piping and wiring are omitted. FIG. 2 is a left side view of the embodiment of the present invention, in which a panel is removed, piping and wiring are omitted. FIG. 2 is a plan view showing a crushing mechanism according to one embodiment of the present invention. Left side view showing a crushing mechanism according to an embodiment of the present invention. Sectional view of the crushing mechanism of one embodiment of the present invention (sectional view taken along the line AA in FIG. 4). Sectional view of the crushing mechanism of one embodiment of the present invention (sectional view taken along the line BB in FIG. 5). Flow chart showing control of the crushing mechanism according to one embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

[Overall configuration of metal chip compression device]
An embodiment of the present invention will be described below based on the drawings.
As shown in FIGS. 1 to 3, a metal chip compression device of the present invention includes a hopper 2 that receives chips discharged from a machine tool, and a crushing mechanism that is located immediately below the hopper 2 and crushes chips to reduce the size of the chips. 3, a transfer mechanism 4 for transferring crushed and reduced chips to a compression cylinder mechanism 5, a compression cylinder mechanism 5 for compressing and discharging chips, and a hydraulic pump for generating hydraulic pressure of the compression cylinder mechanism 5. The motor device 21, the hydraulic pressure control valve 17 for controlling the hydraulic pressure, the control unit 6 (not shown), an outer frame for supporting the structure, and a panel for shielding the inside.

(Hopper, outer frame and panel)
As shown in FIGS. 1 to 3, the metal chip compressing apparatus 1 of the present invention has a substantially cubic shape and is surrounded by a shielding panel (not shown), and a hydraulic cylinder part of a compression cylinder mechanism 5 is provided on an upper portion thereof. It has a prominent appearance. Outer frame members are assembled by welding or the like at 12 places where the shielding panels are joined to support the weight and load of the structure. Each shield panel is screwed to the opposing outer frame member with a screw or the like, but may be configured to partially hook the outer frame member. A reinforcing member for supporting the weight of the compression cylinder mechanism 5 is further added to the upper outer frame of the device 1. Further, a reinforcing member for supporting the crushing mechanism 3 is added to the middle stage of the present apparatus 1. In the upper part of the present apparatus 1, a hopper 2 for temporarily storing chips is formed on a top plate as a shielding panel. Note that the hopper 2 may be provided with an extended hopper member for further increasing the opening upward.

(Crushing mechanism)
As shown in detail in FIGS. 4 to 7, the crushing mechanism 3 includes two rotary shafts 31, a bearing 35 supporting each shaft, and a crushing motor device 24 via the rotary shaft 31 via a key via a key or the like. A plurality of crushing blades 32 to be driven, a gap regulating member 33 for regulating the interval between adjacent crushing blades 32, and a crushing motor device attached to one end of the rotating shaft 31 for driving the crushing blades 32 via a key or the like. 24, and a box 34 to which the bearing 35 and the crushing motor device 24 are attached. The box 34 is attached as a whole to the reinforcing member of the outer frame by a fastening bolt (not shown).

The crushing blade 32 has a disk shape having a thickness, and a plurality of protrusions 37 for capturing chips are provided on a disk outer diameter 38. The crushing blades 32 rotate inward on the rotary 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 periphery. The captured swarf is sheared and crushed at the corners between the disc outer diameters 38 of the adjacent opposing crushing blades 32.

Each of the crushing blades 32 rotates inwardly via a key or the like on the rotating shaft 31 to reliably capture chips falling from the hopper 2 directly above as shown in FIGS. Is formed, sheared, crushed, and dropped on the transfer mechanism 4 immediately below.

The spacing between the adjacent crushing blades 32 is set by the 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 opposing crushing blade 32. The crushing blade 32 and the gap regulating member 33 may be formed integrally, or all the crushing blades 32 and the gap regulating member 33 on the rotating shaft 31 may be formed integrally.

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

FIG. 8 shows the control of the apparatus when chips are introduced. Normally, both the first electric motor and the second electric motor are driven by the control mechanism 6 (not shown) so as to rotate forward as shown in FIG. When a large amount of swarf is supplied, load torque, drive current, rotation speed, and the like of the crushing motor device 24 fluctuate. In the embodiment, the pulse of the rotation detection sensor 53 is delayed as shown in FIG. Thereby, as shown in (C), both the first electric motor and the second electric motor are stopped. It should be noted that the motor may be stopped based on the load torque of the first motor or the second motor or the degree of increase in the drive current instead of outputting the pulse of the rotation detection sensor 53.

Thereafter, as shown in (D), the first and second electric motors are reversed, that is, the crushing blade group driven by these electric motors is rotated outward. At this time, the injected chips are pushed back by the crushing blade and move upward in the apparatus. At the stage where it is possible to confirm that the predetermined time has elapsed by (E), the first and second electric motors are stopped as shown in (F). It goes without saying that (E) may be controlled not by time but by rotation angle.

After that, the first motor is rotated forward and the second motor is rotated reversely as shown in FIG. At this time, the injected chips move from the first electric motor to the second electric motor. Thereby, the tip portion of the crushed blade that has been bitten by the crushing blade is loosened and easily crushed. (H) stops the first and second motors as shown in (I) when it is possible to confirm that the predetermined time has elapsed.

Thereafter, as shown in (J), the first motor is rotated in the reverse direction, and the second motor is rotated in the normal direction. At this time, the injected chips move from the second electric motor to the first electric motor. At the stage where it is possible to confirm that the predetermined time has elapsed by (K), the first and second electric motors are stopped as shown in (L). Subsequently, the operation returns to the normal operation shown in FIG.

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

(Transport mechanism)
As shown in FIG. 2 and FIG. 3, in a plan view, the width of the triangle or the triangle becomes narrower toward the opening provided in the upper part of the compression molding chamber 12 so as to receive all the chips falling from the crushing blade 32. It comprises a pentagonal transfer plate 71, a plate 72 welded to the transfer plate 71 for attaching the transfer plate 71 to the box 34, and bolts for connecting the plate 72 and the box 34. Although the plate 72 is welded to 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 an opening provided in the upper part of the compression molding chamber 12. At the edge of the transfer plate 71, a vertical wall for preventing chips from jumping out of the transfer plate 71 is provided at a predetermined height in a substantially vertical direction.

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

[Compression cylinder mechanism]
As shown in FIGS. 2 and 3, the compression cylinder mechanism 5 includes a hydraulic cylinder located at an upper part of the apparatus 1, a compression plunger 11 which 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 introduced, a bottom plate 13 capable of switching the presence or absence of a bottom hole 14, and a switching cylinder 15 provided directly below the bottom plate 13 on one side and having a hydraulic pressure of a hydraulic cylinder A reaction force member 18 for receiving the generated compressive force, four columns connecting the hydraulic cylinder and the reaction force member 18, and a hydraulic pressure control valve 17 attached to a part of the hydraulic pump / motor device. It is configured. In the initial position, the compression plunger 11 and the compression molding chamber 12 are fitted with a small gap at the upper part so as to prevent misalignment at the time of assembly.

Chips sent from the transfer mechanism 4 are supplied 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 a state without the bottom hole. When it is detected that the compression molding chamber 12 is full of chips by a detector (not shown) that detects the accumulation state of the metal chips 22 (referred to as chips), the supply of chips is stopped, and the compression process is stopped. Move to The compression is performed by the hydraulic compression force of a 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 a specified hydraulic pressure corresponding to the relief pressure has been reached.

The above embodiments are not intended to limit the present invention, but are exemplifications for explanation, and modifications and alterations may be made without departing from 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.

REFERENCE SIGNS LIST 1 metal cutting chip 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 Rotary shaft 32 Crushing blade 33 Gap regulating member 34 Box 35 Bearing 37 Protrusion 38 Disc outer diameter (protrusion root diameter)
51 Adapter 52 Pulser ring 53 Rotation detection sensor 71 Transfer plate 72 Plate

Claims (1)

A hopper that receives the metal chips that have been input, a crushing mechanism that crushes the metal chips sent from the hopper, a transfer mechanism that sends the crushed metal chips to the compression cylinder mechanism, and a transfer mechanism that sends the transferred metal chips. In a metal chip compression device provided with a compression cylinder mechanism for performing compression molding in a compression molding chamber, the crushing mechanism includes a pair of rotation shafts that normally rotate in opposite directions toward the inside and an axial direction of each of the rotation shafts. A first driving mechanism including a pair of crushing blade groups having a thickness, a first driving mechanism including a first electric motor driving one of the rotating shafts, and a second electric motor including a second electric motor driving the other rotating shaft. A second driving mechanism, wherein 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 scissor-like manner; Metal cutting through the group A detection mechanism for detecting the amount of chips is provided, and a control mechanism for controlling the operation of each of the electric motors driving the pair of crushing blades is provided, and the detection mechanism detects that a large amount of metal cutting chips has passed. Wherein each of the electric motors is temporarily stopped, and at least one of the rotating shafts is driven in a direction opposite to a normal rotation direction, wherein

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