Cutting oil recovery container

Abstract

To provide a cutting oil recovery container which can efficiently separate a cutting oil without breaking metal cut lumps compressed in a lump form and efficiently recover the cutting oil from metal chips.SOLUTION: A cutting oil recovery container 1 comprises a bottom plate 2 and side plates 31, 32, 33, 34 provided at a peripheral edge of the bottom plate 2, and metal chips and metal cut lamps formed by compressing the metal chips are placed into the cutting oil recovery container 1. An oil sump box 4 is erected on an inner surface side of the side plate 31. The bottom plate 2 formed in a concave shape in which a center portion is recessed is inclined toward the oil sump box 4 and an oil passage hole through which an oil passes is formed at a lower part of the oil sump box 4.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a cutting oil recovery container that separates and recovers cutting oil by natural filtration from metal cutting chips generated during cutting processing and from metal cutting chunks formed by compressing the metal cutting chips into chunks. [Background technology]

[0002] In general, when cutting various metal parts with a machine such as a lathe, oil-based or water-soluble cutting oil is applied to the cutting site to suppress friction and cool the contact surface between the various metal parts and the machine tool such as the lathe. The metal cutting chips generated at this time are long and curled, and many spaces are generated between the cutting chips as dead spaces, making them very bulky, so they need to be collected frequently. In addition, a large amount of cutting oil is attached to the metal cutting chips.

[0003] Conventionally, the main method of treating such metal cutting chips is to discharge the metal cutting chips from a cutting machine to a transport cart on a spiral conveyor or the like, and then compress them to a certain size with a large compressor to be disposed of or recycled. However, as described above, the shape of the cutting chips is often long and curled, and the cost of transporting them to the transport cart is also high. In response to this problem, a metal cutting chip compression device that compresses bulky metal cutting chips into metal cutting chunks has been proposed in Patent Document 1. With such a device, bulky metal cutting chips can be collected in a compressed state into a plate-shaped or columnar chunk, which eliminates the hassle of replacing the collection box, but the cutting oil attached to the metal cutting chunks drips down and causes an oil liquid pool in the collection box.

[0004] Conventionally, a method has been proposed for recovering cutting oil from metal cutting chips before compression in a part of a cutting machine. For example, in Patent Document 2 and Patent Document 3, a container configured to suck cutting oil from an oil liquid pool in the container by a pump is provided in a part of a cutting machine. However, such a container is attached to a specific processing machine and is intended to circulate the cutting oil, and cannot be used as a single container. For example, Patent Document 4 discloses a chip transport cart that uses gravity to separate cutting oil and chips and can be transported. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2017-42777 A [Patent Document 2] JP 2003-275937 A [Patent Document 3] Patent Publication No. 2022-130002 [Patent Document 4] Japanese Patent Application Publication No. 11-207562 Summary of the Invention [Problem to be solved by the invention]

[0006] However, since the metal cutting lumps formed in the device such as Patent Document 1 are attached to a specific processing machine as described above, it was not possible to use a container such as Patent Document 2 or Patent Document 3. In addition, if the metal cutting chips before compression molding are put into the collection container, they naturally spread along the bottom surface of the container, so that the metal cutting chips can be put in one after another. However, in the case of the metal cutting lumps as in Patent Document 1, due to their shape, they do not spread along the bottom surface of the container and pile up in the collection container. If they pile up, it is necessary to immediately replace the collection container or stop the operation of the cutting machine, so it was necessary to take a method of recovering the cutting oil in the metal cutting lumps. In addition, there was a problem that the lumps of the lumps of the metal cutting chips collapsed due to the impact of the collision between the metal cutting lumps of the lumps of the metal cutting chips. If there is a bottom plate that is parallel to the floor surface as in Patent Document 4, the oil does not drain well and the oil adheres to the bottom plate, resulting in poor recovery efficiency.

[0007] In view of the above-mentioned problems, the present invention aims to provide a cutting oil recovery container that can efficiently separate cutting oil from metal cutting chips compressed into lumps without them crumbling, and can efficiently recover cutting oil from metal cutting chips. [Means for solving the problem]

[0008] Therefore, the first feature of the present invention is that in a cutting oil recovery container consisting of a bottom plate and side plates attached to its periphery, into which metal cutting chips and metal cutting chunks formed by compressing the metal cutting chips are poured, an oil collection manhole is erected on the inner surface of the side plate, the bottom plate, which is formed with a concave shape with a recessed center, is inclined toward the oil collection manhole, and an oil passage hole through which oil passes is formed at the bottom of the oil collection manhole.

[0009] A second feature is that the bottom surface of the bottom plate is provided with a plurality of casters and further has a gripping portion on the side, and a third feature is that the oil collection manhole is provided with an oil drainage mechanism. Effect of the Invention

[0010] Due to the above configuration, the present invention can hold the metal cuttings without losing their shape, especially by forming the bottom surface into a concave shape, i.e., a curved cross section, and tilting it in one direction. In addition, the cutting oil that flows naturally from the metal cuttings and cutting chips is naturally collected in the oil collecting basin along the tilt of the bottom surface, so the oil can be efficiently collected. In addition, since the metal cuttings are arranged along the tilted bottom surface, it is possible to prevent the metal cuttings from being piled up in only a specific area.

[0011] In addition, since an oil hole is formed at the bottom of the oil collection basin, by attaching a suction device such as a pump to the oil collection basin, it is possible to easily collect only the cutting oil inside the container.

[0012] Furthermore, by configuring the container in a cart fashion with casters on the bottom plate and handles on the sides, metal cutting chips and metal cutting chunks can be added to the container one after another, making it easy to transport even if the overall weight becomes heavy. [Brief description of the drawings]

[0013] [Figure 1] 1 is a perspective view showing a cutting oil recovery container according to the present invention from the front side; [Diagram 2] 1 is a perspective view showing a cutting oil recovery container according to the present invention from the rear side. FIG. [Diagram 3] FIG. 2 is a plan view of the cutting oil recovery container according to the present invention. [Figure 4] 1 is a cross-sectional view of a cutting oil recovery container according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. EXAMPLES

[0015] The cutting oil recovery container 1 of the present invention is a box-shaped container consisting of one bottom plate 2 and four side plates 31, 32, 33, 34 provided on its periphery, as shown in Figs. 1 to 4. For example, the bottom plate 2 is a rectangular metal plate 800 mm long, 500 mm short, and 2.3 mm thick, formed to have a curved cross section with a concave central portion. Four side plates 31, 32, 33, 34 are erected on the periphery of the bottom plate 2, and the side plates 31, 32 are rectangular metal plates 500 mm wide and 405 mm high, and the side plates 33, 34 are rectangular metal plates 800 mm wide and 405 mm high. The side plates 31, 32, 33, 34 have the same thickness as the bottom plate 2. As shown in Fig. 4, the bottom plate 2 is curved with a bending radius R of 400 mm, and is inclined downward with respect to the floor surface at an angle θ of 4 degrees. Therefore, the metal cutting chips 8 and the cutting oil naturally flowing down from the metal cutting chips 8 move naturally along the slope of the bottom plate 2 to the most recessed part of the bottom plate 2. As shown in the figure, the bottom plate 2 is provided so as to slope toward the side plate 31, and the metal cutting chips on the bottom plate 2, the metal cutting chips 8, and the cutting oil naturally flowing down from the metal cutting chips 8 move toward one side of the side plate 31.

[0016] A plurality of casters 6 are provided on the underside of the bottom plate 2 so as to be rotatable. The casters 6 are capable of moving freely in the direction in which the cutting oil recovery container 1 turns, and the number of casters provided on the underside of the bottom plate 2 is not limited to four as shown in this embodiment, but may be three or more, or may be two. A grip 5 is provided on the outer surface of the side plate 32 to be gripped when moving the cutting oil recovery container 1. The grip 5 is not limited to a substantially U-shaped metal pipe as shown in this embodiment, and various shapes and materials can be used as long as they are easy to operate to move the cutting oil recovery container 1.

[0017] A metal plate bent into a U-shape is provided on the inner surface of the side plate 31, and the oil collecting manhole 4 is provided. An oil passage hole 41 is provided by cutting out a part of the lower part of the oil collecting manhole 4. The size of the oil passage hole 41 is preferably large enough that the metal cutting chips and metal cutting chunks 8 cannot pass through, and multiple oil passage holes 41 may be provided. As described above, the bottom plate 2 is inclined downward toward the side plate 31, so that the cutting oil that naturally flows down from the metal cutting chips and metal cutting chunks 8 flows into the internal space of the oil collecting manhole 4 through the oil passage hole 41.

[0018] A liquid collector 7 or an oil suction pump (not shown) is inserted into the oil collecting manhole 4 as necessary, and the oil stored in the internal space is discharged to the outside of the cutting oil recovery container 1. This oil discharge mechanism is not limited to a specific form, and any form can be adopted as long as it is a mechanism that can discharge the oil stored in the oil collecting manhole 4 to the outside.

[0019] The metal cutting chunks 8 are formed by molding metal chips or metal cutting shavings discharged from a cutting machine into a chunk of a specified shape using a compressor or the like. The metal cutting chunks 8 can be molded into various shapes, such as columnar, plate-like, or spherical, and are formed into a chunk with cutting fluid sprayed onto the metal chips or metal cutting shavings in order to improve processing accuracy and tool life during compression molding or cutting processing.

[0020] The metal cuttings 8 are contained in the cutting oil recovery container 1 of the present invention, and move to gather near the oil collecting manhole 4 as the bottom plate 2 inclines. The cutting oil is naturally filtered from the metal cuttings 8 during or after the movement, and flows along the bottom plate 2 into the oil collecting manhole 4. In addition, since the bottom surface 2 of the metal cuttings 8 that is put into the cutting oil recovery container 1 is inclined, it is possible to reduce the impact when put in and prevent the metal cuttings 8 from collapsing. In addition, cutting chips that were attached to the metal cuttings 8 and cutting chips that have detached from the metal cuttings 8 also move to the periphery of the oil collecting manhole 4 in the same manner as the movement of the metal cuttings 8. Not only the metal cuttings 8 but also the metal cutting chips before compression are put into the cutting oil recovery container 1.

[0021] Incidentally, the present invention is not limited to the above-described embodiments, which are merely examples for the purpose of explanation, and it goes without saying that modifications and additions to the constituent elements are possible without departing from the scope of the claims.

[0022] The inclination angle of the bottom plate 2 is set to 4 degrees, but in view of the relationship between the viscosity coefficient of the cutting oil and the fluid velocity, the lower limit of the inclination angle is preferably 4 degrees or more. [Explanation of symbols]

[0023] 1 Cutting oil collection container 2 Bottom plate 31 Side Panel 32 Side Panel 33 Side Panel 34 Side Panel 4 Oil Reservoir 41 Oil hole 5 Gripping part 6 Casters 7. Liquid Collector 8 Metal cutting lump

Claims

1. A cutting oil recovery container is composed of a bottom plate and side plates attached to its periphery, and into which metal cutting chips and metal cutting chunks formed by compressing the metal cutting chips are put, characterized in that an oil collection manhole is erected on the inner side of the side plates, the bottom plate is formed with a concave shape with a recessed center and is inclined toward the oil collection manhole, and an oil passage hole through which oil passes is formed at the bottom of the oil collection manhole.

2. 2. The cutting oil recovery container according to claim 1, further comprising a plurality of casters on the bottom surface of the bottom plate and a gripping portion on the side surface.

3. 3. The cutting oil recovery container according to claim 1, wherein the oil collecting vessel is provided with an oil discharge mechanism.

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