JP4424734B2 - Core cutting device - Google Patents

Description

The present invention relates to an apparatus for cutting a columnar sample (geological core, hereinafter simply referred to as a core) excavated and collected in the longitudinal direction.

When investigating the seabed's strata, etc., the core is sampled with the core tube filled in the core tube, and various scientific information is acquired by observing and analyzing the core in the core tube. Here, how to observe and analyze the core in the core tube is a problem. Usually, the core tube filled with the core is cut in half in the length direction to The core is observed and analyzed by obtaining the cut surface.

However, there is one problem in cutting core-filled core tubes. The core quality of the core filled in the core tube is diverse. For example, when the core is formed from a deposit such as a soft mud layer or a sand layer, the core quality is relatively soft. On the other hand, when the core is formed from sedimentary rock, igneous rock, metamorphic rock, etc., the core quality is relatively hard. If the core quality is hard, the core tube and the core can be cut at the same time using a grindstone. However, in order to cut a soft core, it does not work with a cutting grindstone, and it is advantageous to cut with a wire or the like. However, since the core is built into the hard core tube, the core built into the core tube cannot be cut directly with a wire.

Therefore, conventionally, both a cutting machine equipped with a cutting blade and a cutting machine equipped with a wire are prepared, and information on the properties of the core is obtained by X-ray imaging. Only the core tube was cut with a cutting machine equipped with a blade, and then the core was cut with a cutting machine equipped with a wire. However, in this method, there is a problem that the cutting process increases and it takes time and effort, and if the process of moving the core is included, the core is damaged when the core is moved, or the core when the core is cut It becomes difficult to position. Furthermore, when a core cutting machine is mounted on an observation survey ship, there is a problem that when a plurality of types of cutting machines are brought in, space is taken up accordingly.

An object of the present invention is to cut a core tube filled with a soft core simultaneously with the core tube while being a single device.

Another object of the present invention is to provide a core cutting machine that can cope with various core qualities while being a single device.

The core cutting device adopted by the present invention to solve such a problem is a core cutting device that cuts a core tube filled with a core placed on a bed in a longitudinal direction,
The cutting device has a cutting mechanism provided so as to be movable in the longitudinal direction of the core tube, and the cutting mechanism is composed of first cutting means and second cutting means, Each of the cutting parts has a main shaft extending in the vertical direction and a cutting blade rotatable in the horizontal direction, and the second cutting means is in the same horizontal plane as the left and right cutting blades. Thus, it has a cutting portion extending in a direction crossing the moving direction of the cutting mechanism (in a preferred embodiment, a direction orthogonal to the moving direction of the cutting mechanism).

By comprising in this way, the core tube with which the soft core was filled can be cut | disconnected by one process. That is, when the cutting mechanism moves in the longitudinal direction of the core tube, the core tube is cut by the left and right cutting blades of the first cutting means, and the second cutting is performed following the cutting of the core tube by the cutting blades of the first cutting means. The cutting part of the means cuts the core. In a preferred embodiment, the second cutting means is located on the rear side of the first cutting means with respect to the moving direction of the cutting mechanism.

In one preferable aspect, the cutting part of the second cutting means is a wire. In another preferred embodiment, the cutting part of the second cutting means is a band saw. These cutting portions may be fixed, but in one preferred embodiment, the cutting portion of the second cutting means is extended in the extending direction of the cutting portion of the second cutting means (in the preferred embodiment, orthogonal to the moving direction of the cutting mechanism). It can be moved horizontally in the direction of

In a preferred embodiment, the main shaft of at least one cutting portion of the first cutting means can be changed from a posture extending in the vertical direction to a posture extending in the horizontal direction (in a preferred embodiment, it is rotatable). The rotation direction of the cutting blade can be changed from the horizontal direction to the vertical direction. By doing so, it is possible to cut the core tube filled with the hard core with only the cutting blade of one cutting portion of the first cutting means. Preferably, each cutting part of the first cutting means is provided so that the position of each cutting part of the first cutting means can be adjusted in a direction orthogonal to the moving direction of the cutting mechanism.

In one aspect, the second cutting means is configured to be deformable between a cutting posture of the core by the cutting portion of the second cutting means and a retracting posture that does not interfere with the cutting of the core by the first cutting means. ing. In another aspect, the second cutting means is detachably provided. In one preferred embodiment, the apparatus includes a column (preferably a portal column) provided on the bed so as to be capable of reciprocating in the longitudinal direction of the core tube, and the cutting mechanism is attached to the column. It is installed. In this structure, the cutting mechanism is provided so as to be movable (reciprocating) in the longitudinal direction of the core tube via a reciprocating column, and the position of the first cutting means is adjusted in the horizontal and vertical directions with respect to the column. Can be attached freely.

By providing the first cutting means and the second cutting means, the core and the core tube can be cut in one step even when the core filled in the core tube is soft,
The cutting time is shortened, and it is not necessary to move only the core as in the prior art, so that the core is not damaged.

The rotation direction of the cutting blade is changed from the horizontal direction to the vertical direction by making the main axis of at least one cutting part of the first cutting means freely changeable from a posture extending in the vertical direction to a posture extending in the horizontal direction. In what has been made possible, the core tube filled with the hard core can be cut with the cutting blade of one cutting part of the first cutting means by making one cutting part of the first cutting means vertical. It becomes possible. Therefore, the core tube filled with the soft core corresponds to the first cutting means and the second cutting means in the horizontal posture, and the core tube filled with the hard core corresponds to the first tube in the vertical posture. It is possible to cope with one cutting portion of one means, and it is possible to cope with a core tube filled with various core qualities while being a single device.

FIG. 1 is a schematic perspective view of a core cutting device according to the present invention. The core cutting device has a rectangular parallelepiped bed 1, and on the upper surface of the bed 1, a longitudinal member V mounting base 3 on which a core tube 2 filled with a core 20 is placed extends in the longitudinal direction of the bed 1. It is provided. On the upper surface of the bed 1, left and right linear guides 4 are laid in the longitudinal direction of the bed 1 along the installation table 3 and on both sides of the installation table 3 and extending in parallel with each other. ing. In the left and right linear guides 4, the portal column 5 is connected to the longitudinal direction of the bed 1 (which is also the longitudinal direction of the installation table 3 through the sliding portion 6 provided at the lower ends of the left and right columns, that is, the core tube. 2 in the longitudinal direction). The portal column 5 can reciprocate on the linear guide 4 by a feed screw 7 extending parallel to the linear guide 4, and the feed screw 7 is driven by a feed motor 8. In the present specification, the longitudinal direction of the bed is the front-rear direction, the short-side direction of the bed is the left-right direction, and the direction in which the portal column first moves during cutting is the front.

A cutting mechanism is mounted on the portal column 5, and the cutting mechanism can reciprocate in the length direction of the core tube 2 together with the portal column 5. The cutting mechanism mainly includes first cutting means for cutting the core tube and the hard core, and mainly second cutting means for cutting the soft core.

As shown in FIGS. 1, 2, 7, 11, the first cutting means has two left and right cutting portions 9, 10, and each cutting portion 9, 10 is placed horizontally on the front surface of the portal column 5. With respect to the linear guide 11 extended and provided, the position can be adjusted in the horizontal direction. The pair of cutting portions 9 and 10 are respectively composed of main shafts 90 and 100, disc-shaped rotatable cutting blades 91 and 101 provided at the tips of the main shafts 90 and 100, and a main shaft motor 92 that rotates the main shafts 90 and 100. , 102 and heads 93, 103 for supporting the main shaft, and are mounted on the linear guide 11 so as to be movable in the horizontal direction from side to side via a sliding body 12 formed on the rear surfaces of the heads 93, 103. The cutting portions 9 and 10 are movable in the horizontal direction with respect to the linear guide 11 by a feed screw 13 extending in parallel to the linear guide 11, and the feed screw is driven by a feed motor 14.

When the spindles 90 and 100 are rotated by the spindle motors 92 and 102, the cutting blades 91 and 101 are rotationally driven in a plane orthogonal to the spindles 90 and 100. In addition to being able to adjust the position in the horizontal direction, the cutting portions 9 and 10 are also configured to be adjustable in the vertical direction. The left and right cutting portions 9 and 10 are set such that the lower cutting blades 91 and 101 rotate in the same horizontal plane when the main shafts 90 and 100 are extended vertically. Furthermore, the vertical positions and horizontal positions of the cutting blades 91 and 101 are installed so as to cut only the core tube 2 fixed to the installation base 3 at the central portion in the vertical direction. Examples of preferable cutting blades 91 and 101 include a cutting grindstone and a diamond cutter. In the figure, reference numeral 15 is a vertical handle, 16 is a front / rear handle, and 17 is a vertical feed motor.

As shown in FIGS. 4, 5, and 12, one of the left and right cutting parts 9, 10 is between the posture in which the main shaft 92 extends in the vertical direction and the posture in which the main shaft 92 extends in the horizontal direction. It can be transformed freely. In one embodiment, the head 93 of the cutting part 9 is rotatably mounted on a support part 930 having a sliding part 12 on the rear side, and the main shaft 92 is supported via the rotatable head 93. The unit 930 is configured to be movable between a vertical posture and a horizontal posture. In the embodiment, the cutting blade 91 of the cutting unit 9 has a larger diameter than the cutting blade 101 of the cutting unit 10, but the cutting blade 91 of the cutting unit 9 and the cutting blade 101 of the cutting unit 10 are the same size. It may be.

As shown in FIGS. 8 and 9, the portal column 5 is provided with a second cutting means 18 located on the rear side of the first cutting means composed of two cutting portions 9 and 10. Specifically, the first cutting means is provided on the front surface of the portal column 5, and the second cutting means 18 is provided between the left and right columns of the portal column 5. The second cutting means 18 is formed in the left-right direction (the direction orthogonal to the moving direction of the portal column 5, that is, the core tube 2) in the same horizontal plane as the cutting blades 91, 101 of the cutting portions 9, 10 of the first cutting means. A cutting part extending in a direction perpendicular to the longitudinal direction is provided. As such a cutting part, a wire or a band saw is illustrated.

As shown in FIGS. 3 and 9, the second cutting means 18 will be described based on a cutting portion using a wire 19. Wire holders 21 are provided on both the left and right sides of the core mounting base 3, and a wire 19 extends in the horizontal direction between the left and right wire holders 21. When the main shafts 90 and 100 of the two left and right cutting parts 9 and 10 of the first cutting means are in a vertical posture and the cutting blades 91 and 101 extend in the horizontal direction, the cutting blades 91 and 101 of the cutting parts 9 and 10. And the wire 19 are located in the same horizontal plane. The wire 19 may be a fixed type, or may be a swinging device that reciprocally moves in the wire extending direction (left-right direction). The second cutting means can be moved upward by the retracting cylinder 22 and can be moved to the retracted position.

As shown in FIG. 10, the second cutting means 18 may use a band saw 190, for example, a diamond band saw. In one embodiment, the band saw 190 is wound around two rotatable rollers 23 arranged in the left-right direction, and one of the rollers 23 is connected to the motor 24 to serve as a driving roller. It is configured to be movable in the left-right direction. The band saw 190 wound around the rotating roller 23 rotates, so that the lower band saw 190 moves in the horizontal direction. Similarly to the wire, the band saw 190 may be swingable in the horizontal direction. Alternatively, the band saw may be fixed. The core cutting device according to the present invention can be mounted with each of the second cutting means using the wire 19 as the cutting part and the second cutting means using the band saw 190 as the cutting part, corresponding to the properties of the core. Any of the second cutting means is selected and mounted as a cutting mechanism.

The holding of the core 20 and the core tube 2 is performed by a clamp method in one method. Place the end face against the reference plate and press it with a vice from the opposite end face. The vice jaw can be changed to any position. Alternatively, the core tube 2 provided in the V-shaped groove portion of the installation base 3 is fixed by pressing from above while following the cutting position by the pressure roller 25 provided in the portal column 5 at the time of cutting. Also good. The cooling means for the cutting means is wet when the core quality is hard, but dry cold air is used when the core quality is soft.

A method for cutting the core-filled core tube 2 when the core is made of a relatively soft material such as a soft mud layer or a sand layer will be described. The core tube 2 is provided in the fixed part on the upper surface of the bed, the main shafts 90 and 100 of the left and right cutting parts 9 and 10 are set in the vertical direction, and the cutting blades 91 and 101 are at the same horizontal position on the left and right ends of the core tube 2. Make a cut in the horizontal direction. Then, the wire 19 is stretched between the left and right wire holders 21 in the horizontal direction. In this state, the main shafts 90 and 100 are rotated by the main shaft motors 92 and 102 and the cutting blades 91 and 101 are rotated, and the feed screw is driven by the feed motor, along the length direction of the core tube 2. When the mold column 5 is moved forward, the left and right ends of the core tube 2 are first cut by the cutting blades 91 and 101, and then the wire 19 is cut while passing through the cut portion of the core tube 2 and cutting the soft core 20. Moves following. By doing so, even if the core tube is filled with a soft core, the core tube 2 and the core 20 can be cut simultaneously. The wire is particularly applied when the core structure is soft (for example, a clay core) and the state of the cut surface is broken by the processing of the grindstone. Furthermore, a fixed type wire and a swing type wire are selected depending on the properties of the core.

A method of cutting the core-filled core tube when the core is made of a relatively hard material such as sedimentary rock, igneous rock, or metamorphic rock will be described. The main shaft of one of the cutting portions 9 is rotated 90 degrees to extend the main shaft 90 in the horizontal direction so that the cutting blade 91 extends in the vertical direction. If necessary, the position of one cutting portion 9 is adjusted in the left-right direction via the linear guide 11 on the front surface of the column 5, and the vertical position of the cutting blade 91 is further adjusted so that the cutting blade 91 is the core tube. 2 is set at a position where it can be equally divided to the left and right, and the other cutting portion 10 is retracted to the side. In this state, the main shaft 90 is rotated by the main shaft motor 92 and the cutting blade 91 is rotated in the vertical direction, and the feed screw 7 is driven by the feed motor 8 so that the length of the core tube 2 filled with the core 20 is reached. When the portal column 5 is moved forward along the direction, the cutting blade 91 cuts the core tube 2 and the core 20 while dividing them in the vertical direction. The cutting by the cutting blade 91 of the cutting section 9 of the first cutting means may be one-pass cutting or may be performed while reciprocating. In the case where the core tube 2 and the core 20 are cut using only the first cutting means, the second cutting means is set in a posture retracted upward.

Further, when the cutting surface is broken by the processing of the grindstone and the wire is hard and cannot be cut, a diamond band saw is adopted as the second cutting means instead of the wire. The band saw can be selected from a rotary type, a swing type, and a fixed type. The diamond band saw can also cut the core tube and the core simultaneously.

The present invention can be used as an apparatus for cutting a columnar sample excavated and collected in the longitudinal direction.

It is a whole perspective view showing the outline of the core cutting device concerning the present invention, and shows the state where the 1st cutting means and the 2nd cutting means were set. It is the schematic which shows the cutting | disconnection of the core tube by a 1st cutting means in case a core quality is soft. It is the schematic which shows the cutting | disconnection of the core by the 2nd cutting means in case a core quality is soft. It is a whole perspective view showing the outline of the core cutting device concerning the present invention, and shows the state where one cutting part of the 1st cutting means was set up. It is the schematic which shows the cutting | disconnection of the core tube and the core by one cutting part of the 1st cutting means in case a core quality is hard. It is a front view of the core cutting device concerning the present invention. It is a side view of the core cutting device concerning the present invention. The left figure is a side view of the cutting mechanism of the core cutting device according to the present invention, and the right figure is a front view of the second cutting means (using a wire as a cutting part) of the cutting mechanism. It is the side view and front view which show the other Example (The band saw is used as a cutting part) of the 2nd cutting means. It is a front view of a 1st cutting means, and is a figure which shows the cutting | disconnection of the core tube by the cutting blade of the right and left cutting part of a 1st cutting means. It is a front view of the 1st cutting means, and is a figure showing cutting of a core tube and a core by a cutting blade of one cutting part of the 1st cutting means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bed 2 Core tube 20 Core 3 Installation stand 5 Portal column 9 Cutting part 90 Spindle 91 Cutting blade 92 Spindle motor 10 Cutting part 100 Spindle 101 Cutting blade 102 Spindle motor 18 Second cutting means 19 Wire 190 Band saw

Claims (11)

A core cutting device for cutting in a longitudinal direction a core tube filled with a core placed on a bed,
The cutting device has a cutting mechanism that is movable in the longitudinal direction of the core tube, and the cutting mechanism includes a first cutting means and a second cutting means,
The first cutting means has left and right cutting portions, each cutting portion has a main shaft extending in the vertical direction, and a cutting blade rotatable in the horizontal direction,
The core cutting device characterized in that the second cutting means has a cutting portion extending in a direction transverse to the moving direction of the cutting mechanism in the same horizontal plane as the left and right cutting blades. The core cutting device according to claim 1, wherein the cutting portion of the second cutting means extends in a direction orthogonal to the moving direction of the cutting mechanism. 3. The core cutting device according to claim 1, wherein the second cutting means is located rearward of the first cutting means with respect to the moving direction of the cutting mechanism. 4. The core cutting device according to claim 1, wherein the cutting portion of the second cutting means is a wire. 4. The core cutting device according to claim 1, wherein the cutting portion of the second cutting means is a band saw. 6. The core cutting device according to claim 1, wherein the cutting portion of the second cutting means is movable horizontally in the extending direction of the cutting portion of the second cutting means. 7. The deviation of any one of claims 1 to 6, wherein the main shaft of at least one cutting portion of the first cutting means is configured to be freely transformable from a posture extending in the vertical direction to a posture extending in the horizontal direction. The core cutting device is characterized in that the rotation direction of the core can be changed from the horizontal direction to the vertical direction. 8. The core cutting device according to claim 7, wherein each cutting portion of the first cutting means is provided so that its position can be adjusted in a direction orthogonal to the moving direction of the cutting mechanism. 9. The method according to claim 1, wherein the second cutting means changes between a cutting posture of the core by the cutting portion of the second cutting means and a retracting posture that does not interfere with the cutting of the core by the first cutting means. A core cutting device characterized by being configured. 9. The core cutting device according to claim 1, wherein the second cutting means is detachably provided. 11. The apparatus according to claim 1, wherein the device includes a column provided on the bed so as to be reciprocable in the longitudinal direction of the core tube, and the cutting mechanism is mounted on the column. And core cutting device.

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