Detachable machining chip removal device for coolant treatment device

Abstract

To provide a replaceable machining chip removal device while maintaining a coolant circulation path. [Solution] A processing system includes a coolant tank (100), a debris removal device (A) that removes debris contained in the coolant, and a supply device that supplies treated coolant to a machine tool, and the debris removal device is detachable from the coolant tank. The debris removal device includes a filter (2) for filtering untreated coolant, an untreated coolant guide (6) that guides the untreated coolant toward the filter, a treated coolant guide (7) that guides treated coolant that has passed through the filter and been filtered into the coolant tank, a casing (1) that holds the filter in its internal space and surrounds at least the area through which the coolant flows, and an installation part (15) that protrudes from the outer surface of the casing and is capable of abutting against part or the entire upper periphery of the open part of the coolant tank.

Description

[Technical Field]

[0001] This invention relates to a chip removal device for removing chips contained in coolant discharged from a machine tool, and more particularly to a chip removal device that is detachable from a coolant tank used in a coolant treatment system. [Background technology]

[0002] As disclosed in Patent Document 1, the conventional technology for coolant treatment devices generally comprises an inlet for introducing untreated coolant into a coolant tank, a suction means for sucking the coolant from the coolant tank, and a filter disposed between the inlet and the suction means. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-141982 Summary of the Invention [Problem to be solved by the invention]

[0004] According to the technology disclosed in the aforementioned Patent Document 1, untreated coolant flowing in from the inlet flows through the coolant tank toward the suction means, and is filtered by a filter placed along the way to remove machining debris. Therefore, the components that make up the coolant treatment device are assembled together.

[0005] However, because the coolant treatment device is an integrated unit, changing one part of the device (such as a filter) requires changing the entire device, which is particularly costly since the entire device must be replaced even if the coolant circulation path is normal. Also, when a new chip removal device (especially a filtration system) is developed, it is not possible to change to the newly developed device, so the entire coolant treatment device must be installed, which results in a large cost burden.

[0006] The present invention was developed in consideration of the above points, and its purpose is to provide a chip removal device that allows the main parts of the coolant treatment device to be replaced while maintaining the coolant circulation path, thereby reducing the cost of equipment replacement and allowing the old type to be easily replaced with a newly developed type. [Means for solving the problem]

[0007] Therefore, the first invention relating to a detachable machining debris removal device in a coolant treatment device is a coolant treatment device that includes a coolant tank with an open top for temporarily storing coolant used in machine tools, a machining debris removal device for removing machining debris contained in the coolant, and a supply device for supplying the processed coolant that has been processed by the machining debris removal device back to the machine tool, and that allows for the circulatory reuse of the coolant. The machining debris removal device is detachable from the coolant tank, and includes a filter for filtering the untreated coolant, and a filter for moving the untreated coolant toward the filter. the filter is moved in the direction of the flow of the untreated coolant; a treated coolant guide section that guides the treated coolant that has been filtered by passing through the filter into the coolant tank; a casing that forms the untreated coolant guide section and the treated coolant guide section and has an internal space, which holds the filter in the internal space and surrounds at least the range in which the coolant flows; and an installation section that protrudes from the outer surface of the casing and is capable of abutting against a part or the entire upper periphery of the periphery of the open part of the coolant tank.

[0008] According to the first aspect of the present invention, the chip removal device is integrated into a casing. The casing's mounting section can be attached to the coolant tank by placing it in the open section of the coolant tank, and the casing can be removed by detaching it from the coolant tank. Since the coolant tank has an open top, the entire chip removal device can be installed in the coolant tank by abutting the mounting section protruding from the side of the casing against the periphery of the open section of the coolant tank. The casing not only holds the filter but also forms the untreated coolant guide section and the treated coolant guide section, ensuring the chip removal function as the coolant flows. Furthermore, because the casing encloses at least the coolant flow area, the coolant does not use the coolant tank until it is processed (the chips are removed), preventing the untreated coolant and the treated coolant from mixing. Therefore, the chip removal device and the coolant tank can be integrated without the need for fine adjustment of their relative positions.

[0009] The second invention, relating to a detachable machining chip removal device for a coolant treatment device, is the same as the first invention, in that the untreated coolant guide section is provided with an untreated coolant supply port that opens at the end facing the machine tool when the coolant treatment device is installed close to the machine tool, and the untreated coolant supply port has a front side wall section that stands upright at the very end edge, side wall sections that stand upright on the left and right of the front side wall section, and rear side wall sections that are positioned on both sides of the untreated coolant guide section facing the front side wall section, and opens approximately upward, and the front side wall section is configured to allow a water stop plate of an appropriate height to be detachably attached, and can be appropriately replaced depending on the shape and height of the discharge section through which untreated coolant is discharged from the machine tool.

[0010] According to the second invention, when a coolant treatment device is installed adjacent to a machine tool, an open raw coolant supply port is disposed at the end of the raw coolant guide section located on the machine tool side. This raw coolant supply port is surrounded by various walls and opens approximately upward, so coolant supplied from the machine tool simply flows downward toward the supply port, which opens approximately upward. This significantly simplifies the supply of raw coolant when installing a chip removal device by locating the supply port at the coolant discharge section of the target machine tool. Furthermore, the front wall portion of the supply port can be fitted with a watertight plate whose height can be adjusted, allowing the actual opening position of the supply port to be adjusted. Therefore, by appropriately changing the opening position of the supply port, adjustments can be made as needed to optimize the connection with the coolant discharge section of the machine tool. In this way, when replacing a chip removal device from a previously installed coolant treatment device, the adjustable connection with the machine tool ensures reliable supply of raw coolant to the chip removal device.

[0011] The third invention, relating to a detachable machining chip removal device in a coolant processing device, is the first or second invention, wherein the installation portion is detachably attached to the casing and is of any size, shape, and thickness that allows it to abut against part or the entire upper periphery of the open portion of the coolant tank.

[0012] According to the third aspect of the invention, the replacement chip removal device is ultimately installed on a coolant tank via a mounting section. By arbitrarily modifying the size, shape, and thickness of the mounting section, it can be installed on an existing coolant tank. The size (particularly the shape) of the mounting section is adjusted so that it can completely cover the open section (top opening) of the existing coolant tank. By closing the open section of the coolant tank in this way, foreign matter can be prevented from entering the coolant tank from outside, maintaining the cleanliness of the processed coolant stored in the coolant tank.

[0013] The fourth invention, relating to a removable machining debris removal device in a coolant processing device, is the third invention, wherein the filter is a drum filter attached to a drum, the drum is formed in an approximately cylindrical shape with a horizontal axis, allows liquid to move between the inside and outside on the approximately cylindrical surface, and is rotatable around the approximately cylindrical axis, and the casing is equipped with a drive unit and a transmission unit for transmitting rotational force to rotate the drum around the axis.

[0014] According to the fourth invention, a filter for filtering raw coolant is mounted on a substantially cylindrical drum as a drum filter, and the drum can be rotated about its axis (around its substantially cylindrical axis). This allows the entire drum filter to rotate about its axis, allowing the entire filter to be used as a filter medium. In other words, when using a drum filter to filter coolant, a portion of the substantially cylindrical drum with its axis horizontal is immersed in a liquid, such as raw coolant, temporarily stored in the casing. By rotating the drum, the entire filter can be used for filtration. Note that the term "substantially cylindrical" refers to a structure consisting solely of a framework of multiple rod-shaped members spaced at appropriate intervals and arranged along a generatrix, which forms a cylindrical shape when a filter is placed around it. This concept naturally also includes cylindrical structures made of a large-mesh metal mesh or the like.

[0015] The fifth invention, relating to a removable machining chip removal device for a coolant processing device, is the fourth invention, wherein the internal space of the casing is formed in a direction inclined relative to the vertical, the drum is held near the lower part of the internal space, the drive unit is installed near the upper part of the internal space, and the transmission unit has a scraper that can slide against the internal wall surface of the casing and is suspended between the drum and the drive unit, moving circulatingly between them together with the scraper, with the scraper moving upward along the incline while sliding against the inner wall surface of the casing.

[0016] According to the fifth invention, the drive unit is installed above the casing and can transmit rotational force to the drum from a position distant from the drum via the transmission unit. Therefore, while the drum filter is immersed in the raw coolant stored below the casing, the drive unit can apply driving force without touching the raw coolant. The transmission unit is suspended between the drive unit and the drum and moves in a circulating manner. A scraper is installed on a part of the transmission unit, allowing it to slide against the inner wall surface of the casing during the circulating movement. When the drive unit rotates forward (normally), it descends above the inclined casing, and when it rises below, it moves diagonally upward near the inner wall surface (the inclined bottom surface) located on the lower side (bottom side) of the casing. Therefore, by attaching a scraper to the transmission unit, it can gradually rise while sliding against the inclined bottom surface of the casing. The scraper scrapes away any debris that sinks in the liquid and is contained in the untreated coolant supplied to the periphery of the drum filter, moving it upward and separating it from the coolant. A discharge section is provided above the casing to discharge the debris moved by the scraper from the casing.

[0017] The sixth invention, relating to a detachable machining debris removal device in a coolant processing device, is the fifth invention, in which the drum is arranged inside a hollow space and is provided with a backwash water injection section that sprays cleaning water from the back side of the filter toward the front side.

[0018] According to the sixth invention, by providing a backwash water injection unit, the backwash water sprayed from the back side of the filter can wash away the processing debris adhering to the front side of the filter, restoring the filter to a suitable condition. Note that the backwash water injection unit is used to clean the filter during maintenance after the coolant processing operation is completed.

[0019] The seventh invention, relating to a removable machining debris removal device in a coolant processing device, is the sixth invention, wherein the untreated coolant guide section is configured to tilt the untreated coolant supplied from the untreated coolant supply port downward toward the bottom of the casing, and the treated coolant guide section is configured by a discharge port that opens into the wall of the casing at a position that is continuous with the inside of the drum.

[0020] According to the seventh invention, raw coolant can be supplied to the raw coolant guide section simply by flowing coolant discharged from the machine tool into the supply port. Similarly, treated coolant can be removed by flowing it out through a discharge port connected to the inside of the drum. If the treated coolant simply flows down into a coolant tank, gravity can easily remove it from the drum. Since the drum is immersed in the raw coolant at the bottom of the casing, the coolant that passes through the filter is concentrated inside the drum. By providing a continuous discharge port on the drum, only the treated coolant can be removed. Treated coolant can be removed from the inside of the drum by gravity flow or by suction using a suction device. Treated coolant is stored in a coolant tank, but if a suction device is used, the treated coolant can be sucked in and directly supplied to the machine tool. [Effects of the Invention]

[0021] According to the present invention, the chip removal device is integrally constructed from the part formed by the casing and the parts held by the casing. Therefore, it is possible to remove the chip removal device part used in the existing coolant treatment device and replace it. Since the usable part of the existing coolant treatment device can be reused as is, replacement costs are reduced.

[0022] Furthermore, the milling debris removal device that uses a drum filter is a type (automatic discharge type) in which the filter used as the filtering material rotates and the milling debris can be removed by a scraper in the transmission section. Some existing coolant treatment devices are of the type (manual discharge type) in which milling debris generated after filtration is manually removed, but this type of manual discharge milling debris removal device can also be converted to an automatic discharge type. With a manual discharge type, it is necessary to stop the device once and remove the milling debris, but by making the above-mentioned replacement, it is possible to convert it into a coolant treatment device that does not require milling debris removal work, thereby shortening treatment time and reducing work. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is an explanatory diagram showing the configuration of an embodiment of the present invention; [Figure 2] 1 is an explanatory diagram showing the configuration of an embodiment of the present invention; [Figure 3] 1 is an explanatory diagram showing the configuration of an embodiment of the present invention; [Figure 4] 1 is an explanatory diagram showing the internal structure of an embodiment of the present invention; [Figure 5] 1 is an explanatory diagram showing an operation mode of an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] An embodiment of the present invention will be described below with reference to the drawings. Figures 1 to 3 show this embodiment. All of Figures 1 to 3 show the relationship between the chip removal device, which is the subject of the present invention, and a coolant tank used in an existing coolant processing system. Figure 1 shows the two separated, while Figures 2 and 3 show the chip removal device installed in the coolant tank. Figures 2 and 3 show the same state, but in different orientations.

[0025] As shown in Fig. 1, the machining debris removal device A according to this embodiment is configured as an integral part so that it can be installed in a coolant tank 100 used in existing coolant processing devices. Basically, the outer frame portion is configured as a casing 1, and a filter 2 is held using the internal space of this casing 1. In this embodiment, the filter 2 is installed in a substantially cylindrical drum 5, and an example is shown in which the entire device constitutes a drum filter.

[0026] The casing 1 has an elongated internal space that is inclined relative to the vertical direction, and is therefore divided into an upper section 11 and a lower section 12. Utilizing this internal space, a drive unit 4 is installed inside the upper section 11, and a drum 5 that constitutes a drum filter is installed inside the lower section 12. A transmission unit (an endless chain or the like) 3 is suspended between the drive unit 4 and the drum 5, so that the rotational drive force of the drive unit 4 can be transmitted to the drum 5. The drive unit 4 and the drum 5 are equipped with sprockets or the like (not shown), and by suspending chains or the like around both sprockets or the like, the transmission of drive force can be ensured.

[0027] The casing 1 also forms a guide portion (untreated coolant guide portion) 6 for guiding untreated coolant discharged from the machine tool (hereinafter sometimes referred to as untreated coolant) into the interior of the casing 1. Specifically, near the lower portion 12 of the casing 1, left and right sidewall portions 61a, 61b, bottom portions 62a, 62b, and rear portions (rear sidewall portions) 63a, 63b (however, 63b is not shown), and a front sidewall portion 64 is provided on the front side, the terminal edge of which forms an open untreated coolant supply port 60 (FIG. 2). The untreated coolant guide portion 6, which is composed of the above-mentioned components, is provided to guide the untreated coolant being supplied (discharged from the machine tool) toward the lower portion 12 of the casing 1 (the bottom of the internal space 10), i.e., toward the area where the filter 2 is located. In addition, protective panels 13 that are continuous with the casing 1 are provided above the rear portions 63a, 63b and above the filter 2. These are provided to protect the filter 2 and other components while avoiding interference with parts of the machine tool, as the coolant treatment device is installed close to the machine tool. While the protective panel 13 is shown in an example with a lowered central portion, this shape can be modified as appropriate depending on the machine tool. In addition, the filter 2 and other components are protected by the protective panel 13 primarily to prevent these components from being exposed to the outside (to prevent splashes, etc., from being dispersed onto the machine tool), as the filter and drum 5 move circulatingly or rotate as described below.

[0028] The casing 1 having the above-described configuration is basically formed of a plate-like member to have a hollow interior. The lower portion 12 is positioned at the lowest position within the casing 1, so that coolant supplied to the casing 1 flows downward toward the inside of the lower portion 12 (internal space 10) and is stored therein. Therefore, the bottom portions 62a, 62b are formed in two separate locations in the range from the sidewall portions 61a, 61b to the internal space 10. Both bottom portions are inclined so that they gradually decrease in height from the sidewall portions 61a, 61b toward the bottom of the internal space 10, allowing the inflowing coolant to flow downward along this inclination. A water stop plate 65 can be attached to the front side to raise its upper edge higher than the front sidewall portion 64. The water stop plate 65 can be supported in an upright position by being inserted into support members 66a, 66b provided on the sidewall portions 61a, 61b of the untreated coolant guide portion 6. By attaching this water stop plate 65, it is possible to change the height of the upper edge of the front side wall portion 64, and to adjust the state of the opening formed by the terminal edge of the untreated coolant guide portion 6.

[0029] The casing 1 also has a guide section (treated coolant guide section) for allowing the coolant that has been filtered by passing through the filter 2 and from which processing debris has been removed (hereinafter, this may be referred to as treated coolant) to flow out of the casing 1. In this embodiment, the guide section is formed by a discharge port 7 that opens up a portion located inside the drum 5. This discharge port 7 penetrates the casing 1 and discharges the treated coolant that has flowed into the drum 5 to the outside by gravity, and the outflowing treated coolant is configured to be stored in a coolant tank 100.

[0030] The casing 1 also has an installation base 14 that protrudes partially from its outer surface. This installation base 14 is a base for connecting the installation section 15 and is fixed to the casing 1 by welding or the like. Fastening through holes 16, 17 are drilled in both the installation base 14 and the installation section 15, and the two 14, 15 are fastened together by a bolt (fastening member) 18 or the like, resulting in the installation section 15 being formed to protrude from the casing 1. By tapping the through hole 17 of the installation section 15 to form a female thread, the bolt (fastening member) 18 can be threaded into the through hole 17, and the installation base 14 can be clamped between the head of the bolt 18 and the installation section 15, thereby enabling fixation in a fastened state. Therefore, the fastening by the bolt (fastening member) 18 makes the configuration detachable. The shape and size of this installation portion 15 can be changed as appropriate depending on the external shape of the casing 1 and the shape of the opening of the coolant tank 100, and an installation portion 5 of a suitable shape and size is provided so that it can abut against the periphery (upper edge) 110 of the opening of the coolant tank 100.

[0031] The installation section 15 is installed around the entire periphery (upper edge) 110 of the open section of the coolant tank 100 or at an appropriate position, thereby stabilizing the installation state and allowing the weight of the chip removal device A to be supported by the installation state. Therefore, when fastening the installation section 15 with the fastening members (bolts) 18 and the female threads of the through-holes 17, the installation section 15 is positioned lower and the installation base 14 is positioned higher. The area where the installation base 14 is stacked on the installation section 15 is a region of a predetermined width (the area indicated by the hatching in the figure) on the edge of the installation section 15, and the installation state can be stabilized by being supported over a wide area around the casing 1. The installation section 15 is not limited to the above configuration; a flange-shaped protrusion may be provided on the outer surface of the integral casing 1.

[0032] In any case, by providing the installation portion 15, the machining chip removal device A can be placed by abutting it against the entire periphery or part of the periphery (upper edge) 110 of the open portion of the coolant tank 100. Even if it is not possible to abut the entire periphery, it can be placed stably by abutting it at several points. Note that the coolant tank 100 assumed in this embodiment is pre-installed with pumps 120 (in an existing coolant processing device) for supplying the stored treated coolant to the machine tool, and by using these pumps 120, the treated coolant can be sent from the coolant tank 100 to the machine tool.

[0033] As shown in FIG. 2 , by installing the chip removal device A on the coolant tank 100 using the installation portion 15, the chip removal device A can be stably supported on the upper edge of the coolant tank 100. At this time, the installation portion 15 completely blocks the open portion (top opening) of the coolant tank 100 (by forming the installation portion 15 in this manner), preventing foreign matter (impurities) from entering the coolant tank 100 from the outside. Since the coolant tank 100 stores treated coolant, as described below, the blocking of the open portion by the installation portion 15 maintains the cleanliness of the treated coolant and stabilizes its quality. Furthermore, the casing 1 installed on the coolant tank 100 has an untreated coolant guide portion 6 formed near its lower portion 12 that opens generally upward (approximately upward), forming an untreated coolant supply port 60. As described above, this supply port 60 is formed by the edges of the left and right sidewalls 61a, 61b, the backsides 63a, 63b, and the front sidewall 64, and because the upper edges of all of these walls face upward, it opens substantially upward. Note that the front sidewall 64 and the water stop plate 65 are formed by walls that are lower than the other members (sidewalls 61a, 61b, etc.), so they are also open on the front side, but this opening is for connecting to a discharge section for discharging coolant from the machine tool, and the untreated coolant supply port 60 that opens at the end of the casing 1 faces upward as a whole.

[0034] 3, even when the machining debris removal device A is installed in the coolant tank 100, the pumps 120 installed in the coolant tank 100 remain usable as is, as described above. Near the top 11 of the casing 1, a drive means 8 for operating the drive unit 4 (FIG. 1) is provided. The drive means 8 is made up of a motor 81 as a drive source and a gearbox 82 for changing the direction of rotation, and applies a rotational force to the drive unit 4 by the driving force of the motor 81. The drive means 8 also has a tension adjustment unit 83 for adjusting the tension between the drum 5 (FIG. 1), and is capable of applying an appropriate tension to the transmission unit 3 (FIG. 1).

[0035] Furthermore, in this embodiment, as shown in Fig. 3, a pressure device 9 for backwashing is provided. The configuration of the backwashing section will be described later, but a backwashing water jetting section is disposed inside the drum 5, and the pressure device 9 is connected to this backwashing water jetting section. Therefore, the cleaning water pressurized by the pressure device 9 is jetted from the backside of the filter 2 inside the drum 5, and machining debris adhering to the filter 2 can be removed by backwashing.

[0036] Next, the internal structure will be described with reference to Figure 4. Figure 4 is a longitudinal cross-sectional view of the casing 1 including the built-in components. As shown in Figure 4, the upper and lower parts 11 and 12 of the casing 1 are respectively equipped with a drive unit 4 and a drum 5 (drum filter 2), each of which is integrally formed with sprockets 31 and 32. The driving force of the drive unit 4 is transmitted to the drum 5 via a chain (transmission unit) 3 suspended between the sprockets 31 and 32, allowing the two to rotate in unison. A filter 2 is wound around the drum 5, and the filter 2 rotates as the drum 5 rotates (as a drum filter). The sprockets 31 and 32 on the drive unit 4 and the drum 5 are respectively disposed on both sides of the rotation shaft, and the chains (transmission units) 3 are also suspended on both sides. Therefore, the chains (transmission units) 3 disposed on both sides can circulate at the same speed. By placing plate-like members horizontally on both sides, a scraper, as described below, can be constructed.

[0037] Here, the drum 5 is separated into two casing 1 sides, with annular rotating rings (two rotating rings arranged on both sides) 51 fixed to sprockets 32, and a plurality of rod-shaped members 52 for supporting the filter 2 are provided at appropriate intervals to unite the two rotating rings 51. Because the main body of the drum 5 is formed by the rod-shaped members 52, liquid can move between the inside and outside in areas where the rod-shaped members 52 are not arranged. Therefore, the filter 2 attached to the drum 5 can function as a filter medium in areas where the rod-shaped members 52 are not arranged, and by moving the untreated coolant from the outside to the inside of the drum 5 (passing through the filter 2), the processing chips contained in the untreated coolant can be filtered by the filter 2 functioning as a filter medium.

[0038] Because liquid can flow inside and outside the drum 5 (on the front and back sides of the filter 2), it is possible for the filtered coolant to return to the outside of the drum 5. However, if the liquid (filtered coolant) that has flowed into the inside of the drum 5 is discharged from the casing 1, only the treated coolant can be obtained. Therefore, an open outlet 7 (FIG. 1) is provided on the side of the casing 1 located inside the drum 5, which constitutes the treated coolant guide section 50. The open area is approximately the same size as the inside of the annular rotating ring 51, but because backwash water spray sections 91 and 92 (described below) are installed, the area below the approximate center (the shaded area in the figure) essentially functions as the guide section 50. Therefore, the treated (filtered) coolant can be discharged outside the casing 1 via the guide section 50, allowing the treated coolant to be stored in the coolant tank 100.

[0039] As already explained, the casing 1 has a sidewall portion and other components forming an untreated coolant supply section 60 near the lower portion 12 (on the right side in the figure). Untreated coolant X is supplied from this supply section 60 into the casing 1, where it flows down into the internal space 10 of the casing 1. An appropriate amount is stored around the lower portion 12, and as the amount of untreated coolant increases, it passes through the filter 2. Because of this function, the casing 1 can temporarily store untreated coolant X at least around the drum 5. At this time, the casing 1 around the drum 5 forms a storage section with an appropriate volume. The chip removal device A of this embodiment is installed (placed from above) on the coolant tank 100, so it is supported by the installation section 15. The lower portion 12 of the casing 1 does not reach the bottom surface 101 of the coolant tank 100 (there is an appropriate gap between them). Therefore, a storage area is secured when storing treated coolant in the coolant tank 100.

[0040] Also, backwash water jetting units 91, 92 are arranged inside drum 5. These backwash water jetting units 91, 92 are supported in an area (part of casing 1) other than the area where casing 1 is opened (the shaded area in the drawing), and liquid sending unit 91 that sends pressurized water extends an appropriate length in the longitudinal direction of drum 5 (the direction perpendicular to the paper surface in the drawing), and a plurality of jetting ports 92 are arranged in liquid sending unit 91. In other words, by arranging backwash water jetting units 91, 92 on the back surface side of filter 2, the washing water can be caused to pass from the back surface side to the front surface side of filter 2 by jetting it, thereby enabling backwashing.

[0041] Furthermore, this embodiment is configured so that scrapers 33 can scrape away chips that sink inside the casing 1. The scrapers 33 are fixed to the transmission unit (e.g., chain) 3 at appropriate intervals and comprise plate-like members that are hung horizontally on both the left and right transmission units (e.g., chains) 3. When the scrapers 33 are fixed, the edges of the plate-like members are maintained in an upright position so that they can reach the inner wall surface of the casing 1 so that they can slide against the inner wall surface of the casing 1 when the transmission unit 3 moves. Therefore, the leading edge of the scraper 33 moves (slides) while sliding against the inner wall surface of the casing 1, thereby transporting the chips like a conveyor. Relatively large chips contained in the untreated coolant settle within the coolant and may settle on the inner wall surface below the drum 5 (the lower part 12 of the casing 1). By erecting the device so as to reach the sunken chips, the chips can be scraped from the inner wall surface of the casing 1 and transported so as to gradually raise the bottom (slant bottom) of the slanted casing 1. The transported chips Y can be discharged to the outside by natural falling, for example, by configuring the device so as to open an appropriate position in the upper part 11 of the casing 1.

[0042] <Operation mode> Next, the operation of the machining debris removal device A of this embodiment will be described. Since the machining debris removal device A is operated while installed in the coolant tank 100, the operation will be described when the two are integrated. The operation in this state is shown in Figure 5.

[0043] First, as shown in FIG. 5(a), when the device is activated, the drive unit 4 starts to rotate, and the drum 5 also rotates via the transmission unit 3. From this point on, the scraper 33 moves together with the transmission unit 3, and is ready to scrape away chips. In this state, raw coolant X is supplied from the raw coolant supply port 60 formed at the end of the casing 1. The supplied raw coolant X flows along the raw coolant guide portion 6 of the casing 1 toward the lower portion 12 of the internal space 10 of the casing 1. When an appropriate amount of raw coolant X accumulates in the lower portion 12 of the casing 1, the settled chips Y are scraped off by the scraper 33 and discharged to the outside of the casing 1.

[0044] Furthermore, as the untreated coolant X continues to flow in, the water level of the untreated coolant X stored in the internal space of the casing 1 rises, and when it reaches the filter 2 held by the drum 5, it passes through the filter 2 in an area of ​​the drum 5 where the rod-shaped members 52 are not arranged (an area where the filter 2 can function as a filtering medium). By filtering, fine machining debris floating in the coolant X is removed, and treated coolant can be obtained. Thereafter, the treated coolant flows outward from the opening area (guiding portion) 50 of the casing 1. Note that at this time, the untreated coolant X does not flow outward from the casing 1; only the treated coolant that has passed through the filter 2 can flow outward.

[0045] 5(b), the treated coolant Z that has flowed out of the casing 1 is stored in the coolant tank 100. Even in this state, the untreated coolant X is stored in the internal space 10 of the casing 1 (particularly inside the lower portion 12), and only the treated coolant Z is stored in the coolant tank 100, so that the two liquids do not mix.

[0046] By storing the processed coolant Z in the coolant tank 100 in this way, it can be supplied to the machine tool by the aforementioned pumps 120 (FIG. 1) that are installed in the coolant tank 100 from the beginning.

[0047] The machining debris Y contained in the untreated coolant X is eventually captured by the filter 2, and the machining debris Y accumulated on the filter 2 can be removed by backwashing using the backwash water spraying units 91, 92 after the filtration process is completed. The backwashing of the filter 2 using the backwash water spraying units 91, 92 is performed by spraying cleaning water while rotating the filter 2 (rotating the drum 5) after the coolant treatment process is completed. The cleaning water used for backwashing is temporarily stored inside the lower part 12 of the casing 1 and can be sucked out using a separate suction device or the like.

[0048] Because this embodiment is configured and operable as described above, the machining debris removal device A of this embodiment is detachable from the coolant tank 100, allowing for easy replacement by removing a previously installed machining debris removal device A of the same type and then installing the same type of machining debris removal device A again. Therefore, it is also possible to install a new machining debris removal device A of this embodiment after removing a different type (e.g., manual discharge type) of machining debris removal device or a machining debris removal device of the same type (automatic discharge type) but with a different configuration. Simply by installing this machining debris removal device A in the coolant tank 100, it can be used as a normal coolant processing device.

[0049] In this case, in the machining debris removal device A of this embodiment, the casing 1 surrounds at least the area through which the coolant (untreated coolant and treated coolant) flows, so the untreated coolant can flow without using the coolant tank 100, and there is no need to adjust the installation state (especially the linked state) of the machining debris removal device A and the coolant tank 100.

[0050] The embodiment of the present invention is as described above, but the embodiment is merely an example of the present invention, and the present invention is not limited to the above embodiment. Therefore, other components may be added to the above embodiment, or the elements constituting the embodiment may be changed to other configurations.

[0051] Therefore, the individual elements of the above embodiment can be modified as appropriate. For example, the drum 5 is configured to support the filter 2 while allowing the filter 2 to function as a filtering medium by arranging rod-shaped members 52 at appropriate intervals. However, the drum 5 does not have to be configured with rod-shaped members 52 as long as it is configured to allow the untreated coolant X to pass through. In other words, for example, the drum 5 may be configured with a hard mesh member with a large mesh size.

[0052] Furthermore, the filter 2 is not particularly limited, and as long as it can function as a filtering material, it may be made of resin (for example, nylon material) or metal (for example, SUS sintered material or wedge wire), and may be configured to filter through slits rather than having fine holes. [Explanation of symbols]

[0053] 1 casing 2. Filters 3 Transmission part (endless chain, etc.) 4 Drive unit 5 Drums 6 Untreated coolant guide 7 Outlet 8. Driving means 9. Pressure device (for backwashing) 10. Casing internal space 11 Top of the casing 12 Lower part of casing 13 Protective Panel 14 Installation base 15 Installation part 16 Installation base through hole 17 Installation through hole (with tapped female thread) 18 Bolt (fastening member) 31,32 sprocket 33 Scraper 50 Coolant guide section after treatment 51 Rotating Ring 52 Rod-shaped member 60 Untreated coolant supply port 61a,61b Side wall part 62a,62b Bottom part 63a Rear section (rear side wall section) 64 Front side wall 65 Water stop plate 66a, 66b Support member (for water stop plate) 91 Backwash water injection unit liquid supply unit 92 Backwash water injection nozzle 100 Coolant Tank 101 Bottom of the coolant tank 110 Coolant tank opening periphery (upper edge) 120 Pumps A Processing waste removal device X Untreated coolant Y Processing waste Z-treated coolant

Claims

1. A coolant treatment device that allows for the circulatory reuse of coolant, comprising: a coolant tank with an open top for temporarily storing coolant used in a machine tool; a chip removal device for removing chips contained in the coolant; and a supply device for supplying the processed coolant treated by the chip removal device back to the machine tool, A machining chip removal device that is detachable from the coolant tank, a filter for filtering the untreated coolant; an untreated coolant guide portion that guides the flow direction of the untreated coolant so that the untreated coolant moves toward the filter; a treated coolant guide portion that guides the treated coolant that has been filtered by passing through the filter to the coolant tank; a casing that defines the untreated coolant guide portion and the treated coolant guide portion and has an internal space, holds the filter in the internal space, and surrounds at least a range through which the coolant flows; an installation portion that protrudes from the outer surface of the casing and is capable of contacting a part or the entire upper portion of the periphery of the open portion of the coolant tank; A detachable machining chip removal device in a coolant treatment device, comprising:

2. the untreated coolant guide portion has an untreated coolant supply port that is open at an end facing the machine tool when the coolant treatment device is installed close to the machine tool, The raw coolant supply port has a front side wall portion erected at the end edge, side wall portions erected separately on the left and right sides thereof, and a rear side wall portion arranged separately on both sides of the raw coolant guide portion while facing the front side wall portion, and is open substantially upward, The detachable machining chip removal device in the coolant treatment device described in claim 1 is configured so that a water stop plate of an appropriate height can be attached and detached to the front side wall surface portion, and can be appropriately replaced depending on the shape and height of the discharge portion through which untreated coolant is discharged from the machine tool.

3. 3. A detachable machining chip removal device in a coolant processing device as described in claim 1 or 2, wherein the installation portion is detachably attached to the casing and is provided in any size, shape, and thickness that allows it to abut against part or the entire upper periphery of the open portion of the coolant tank.

4. 4. The detachable machining chip removal device in a coolant processing device according to claim 3, wherein the filter is a drum filter attached to a drum, the drum is formed in a substantially cylindrical shape with a horizontal axis, the substantially cylindrical surface allows liquid to move between the inside and outside, and the drum is rotatable about the substantially cylindrical axis, and the casing is equipped with a drive unit and a transmission unit for transmitting a rotational force to the drum to rotate it about the axis.

5. the internal space of the casing is formed in a direction inclined with respect to the vertical direction, the drum is held in the vicinity of a lower part of the internal space, and the drive unit is installed in the vicinity of an upper part of the internal space, 5. A detachable chip removal device for a coolant processing device according to claim 4, wherein the transmission unit is provided with a scraper that can slide against the inner wall surface of the casing, is suspended between the drum and the drive unit, and moves circulating between the two together with the scraper, with the scraper moving upward along the incline while sliding against the inner wall surface of the casing.

6. 6. A detachable machining chip removal device in a coolant treatment device according to claim 5, wherein the drum is disposed inside a hollow space and is provided with a backwash water injection section that sprays cleaning water from the back side of the filter toward the front side.

7. 7. A detachable machining chip removal device in a coolant processing device as described in claim 6, wherein the untreated coolant guide section is configured to tilt the untreated coolant supplied from the untreated coolant supply port downward toward the lower part of the casing, and the treated coolant guide section is configured by a discharge port that opens into a position on the wall surface of the casing that is continuous with the inside of the drum.

Images