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 uncompressed metal cutting chips in a part of a machining tool. For example, in Patent Document 2 and Patent Document 3, a container configured to suck cutting oil by a pump from an oil reservoir in the container is provided in a part of the machining tool. However, such a container is intended to be attached to a specific machining tool for recycling cutting oil and cannot be used alone. As something that can be transported and used alone, for example, Patent Document 4 discloses a chip transport cart that separates cutting oil and chips using gravity and is transportable.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems 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 is configured such that the bottom surface is concave, that is, curved in cross-section, and inclined in one direction, so that the lump shape of the metal cutting mass is not broken and the metal cutting mass can be retained. In addition, since the cutting oil that naturally flows down from the metal cutting mass and the cutting chips is automatically aggregated into the oil sump along the inclination of the bottom surface, the oil can be efficiently recovered. In addition, since the metal cutting mass is arranged along the inclined bottom surface, it is possible to prevent the metal cutting mass from being laminated only at specific locations.

[0011] In addition, since an oil passage hole is formed in the lower part of the oil sump, by attaching a suction device such as a pump to the oil sump, only the cutting oil in the container can be easily recovered.

[0012] Furthermore, by adopting a cart configuration with casters provided on the bottom plate and a handle provided on the side surface, even if metal cutting chips and metal cutting masses are successively put into the container and the overall weight increases, it can be easily transported.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying out the Invention

[0014] Hereinafter, embodiments of the present invention will be described based on the examples shown in the drawings.

Example

[0015] The cutting oil recovery container 1 of the present invention is a box-shaped container composed of a single bottom plate 2 and four side plates 31, 32, 33, 34 provided at its periphery. For example, the bottom plate 2 is formed by bending a rectangular metal plate with a length of 800 mm, a width of 500 mm, and a thickness of 2.3 mm into a cross-sectionally curved shape with its central portion recessed. Four side plates 31, 32, 33, 34 are erected at the periphery of the bottom plate 2. The side plates 31, 32 are rectangular metal plates with a width of 500 mm and a height of 405 mm, and the side plates 33, 34 are rectangular metal plates with a width of 800 mm and a height of 405 mm. Also, 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 at an angle θ of 4 degrees downward with respect to the floor surface. Therefore, the metal cutting chips 8 and the cutting oil that naturally flows down from the metal cutting chips 8 move along the inclination of the bottom plate 2 and towards the deepest part of the bottom plate 2. As shown in the figure, the bottom plate 2 is provided so as to be inclined towards the side plate 31, and the metal cutting chips, metal cutting chips 8, and cutting oil that naturally flows down from the metal cutting chips 8 on the bottom plate 2 move in one direction towards the side plate 31.

[0016] A plurality of casters 6 are rotatably provided on the lower surface of the bottom plate 2. The casters 6 are capable of freely moving in the direction in which the cutting oil recovery container 1 rotates. The number of casters 6 provided on the lower surface of the bottom plate 2 is not limited to four as shown in this embodiment, and may be three or more, or even two. A gripping portion 5 for gripping when moving the cutting oil recovery container 1 is provided on the outer surface of the side plate 32. The gripping portion 5 is not limited to a substantially U-shaped metal pipe as shown in this embodiment, and various shapes and materials can be adopted as long as they are shapes and materials that are easy to operate for moving 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] Furthermore, the present invention is not limited to the above embodiments, which are merely illustrative 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 due to the relationship between the viscosity coefficient of the cutting oil and the fluid velocity, the lower limit value of the inclination angle is preferably 4 degrees or more.

Explanation of Reference Numerals

[0023] 1 Cutting oil recovery container 2 Bottom plate 31 Side plate 32 Side plate 33 Side plate 34 Side plate 4 Oil sump 41 Oil passage hole 5 Gripping portion 6 Caster 7 Liquid collector 8 Metal cutting block

Claims

1. A cutting oil recovery container composed of a bottom plate and side plates provided on its periphery, into which metal cutting chips and metal cutting blocks formed by compressing the metal cutting chips are introduced. An oil sump is erected on the inner surface side of the side plates, and the bottom plate formed in a curved cross-sectional shape with a bending radius is inclined toward the oil sump, and an oil passage hole through which oil passes is formed at the lower part of the oil sump. A cutting oil recovery container characterized by this.

2. The cutting oil recovery container according to claim 1, characterized in that a plurality of casters are provided on the bottom surface of the bottom plate, and a gripping portion is further provided on the side surface.

3. The cutting oil recovery container according to claim 1 or claim 2, characterized in that an oil discharge mechanism is provided in the oil sump.

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