KR20230140042A - Filtering apparatus of coolant chiller for machine tool and method thereof - Google Patents

Abstract

The present invention differs from the existing bag filter in that it is not a one-time operation, but the control unit controls the operation of the operation unit and the shutter unit depending on the state or processing type of the filtering unit, automatically discharges the chips loaded in the filtering unit to the outside of the housing unit, and repeats the filtering unit. A coolant for machine tools that can be reused, reducing maintenance costs and time, improving replacement convenience and productivity, promoting operator convenience, preventing resource waste, and maximizing the safety and reliability of machine tools. It relates to the filtering device and filtering method of the chiller.

Description

Filtering apparatus of coolant chiller for machine tool and method thereof}

The present invention relates to a filtering device and filtering method for a coolant chiller for machine tools. More specifically, the present invention relates to a filtering device and a filtering method for a coolant chiller for machine tools, and more specifically, to automatically discharge chips loaded in the filtering unit instead of a one-time use, unlike existing bag filters, so that the filtering unit can be reused repeatedly. Accordingly, it relates to a filtering device and filtering method for a coolant chiller for machine tools that can improve replacement convenience and productivity and reduce maintenance costs.

In general, machine tools refer to machines used to process metal/non-metal workpieces into desired shapes and dimensions using appropriate tools using various cutting or non-cutting processing methods.

Various types of machine tools, including turning centers, vertical/horizontal machining centers, door machining centers, Swiss turns, electric discharge machines, horizontal NC boring machines, and CNC lathes, are widely used in various industrial fields to suit the purpose of the work.

In general, various types of machine tools currently in use are equipped with an operating panel to which numerical control (NC) or computerized numerical control (CNC) technology is applied. This operating panel is equipped with various function switches or buttons and a monitor.

In addition, a machine tool includes a table on which the workpiece material is seated and transported for processing the workpiece, a pallet to prepare the workpiece before processing, a spindle on which the tool or workpiece is combined and rotated, a tailstock to support the workpiece, etc. during processing, and an anti-vibration tool. Equipped with etc.

In general, in machine tools, tables, tool rests, spindles, tailstocks, vibration stoppers, etc. are equipped with transfer units that transfer along a transfer axis to perform various machining.

Additionally, machine tools generally use multiple tools for various processing, and a tool magazine or turret is used as a tool storage location to store and store multiple tools.

These machine tools use multiple tools for various processing, and a tool magazine is used as a tool storage location to store multiple tools.

In addition, machine tools are generally equipped with an automatic tool changer (ATC) for withdrawing or storing a specific tool from a tool magazine according to a command from a numerical control unit in order to improve the productivity of the machine tool.

Additionally, machine tools are generally equipped with an automatic pallet changer (APC) to minimize non-processing time. The automatic pallet changer (APC) automatically exchanges pallets between the workpiece machining area and the workpiece installation area. A workpiece can be mounted on a pallet.

In addition, a machine tool includes a table on which the workpiece material is seated and transported for processing the workpiece, a pallet to prepare the workpiece before processing, a spindle on which the tool or workpiece is combined and rotated, a tailstock to support the workpiece, etc. during processing, and an anti-vibration tool. Equipped with etc.

In general, such a machine tool may include a fixed left spindle and a transferable right spindle for clamping both sides of the base material, and a fixed spindle for clamping one side of the base material and a transferable tailstock for fixing the other side of the base material. It can be included.

In general, machine tools refer to machines used to process metal/non-metal workpieces into desired shapes and dimensions using appropriate tools using various cutting or non-cutting processing methods.

Various types of machine tools, including turning centers, vertical/horizontal machining centers, door machining centers, Swiss turns, electric discharge machines, horizontal NC boring machines, and CNC lathes, are widely used in various industrial fields to suit the purpose of the work.

In general, various types of machine tools currently in use are equipped with an operating panel to which numerical control (NC) or computerized numerical control (CNC) technology is applied. This operating panel is equipped with various function switches or buttons and a monitor.

In addition, a machine tool includes a table on which the workpiece material is seated and transported for processing the workpiece, a pallet to prepare the workpiece before processing, a spindle on which the tool or workpiece is combined and rotated, a tailstock to support the workpiece, etc. during processing, and an anti-vibration tool. Equipped with etc.

In general, in machine tools, tables, tool rests, spindles, tailstocks, vibration stoppers, etc. are equipped with transfer units that transfer along a transfer axis to perform various machining.

Additionally, machine tools generally use multiple tools for various processing, and a tool magazine or turret is used as a tool storage location to store and store multiple tools.

These machine tools use multiple tools for various processing, and a tool magazine is used as a tool storage location to store multiple tools.

In addition, machine tools are generally equipped with an automatic tool changer (ATC) for withdrawing or storing a specific tool from a tool magazine according to a command from a numerical control unit in order to improve the productivity of the machine tool.

Additionally, machine tools are generally equipped with an automatic pallet changer (APC) to minimize non-processing time. The automatic pallet changer (APC) automatically exchanges pallets between the workpiece machining area and the workpiece installation area. A workpiece can be mounted on a pallet.

In general, machine tools supply liquid such as coolant to the spindle, tool, and workpiece to improve cutting effectiveness and provide lubrication and cooling. This coolant is recovered and circulated after use. The recovered coolant is mixed with chips generated during cutting. After the coolant and chips are separated using a purification device, the coolant is circulated again.

Chips of various sizes and types generated during machining work on machine tools are handled directly by humans or transported through automatic devices such as chip conveyors and disposed of as industrial waste. In other words, a device that automatically discharges these chips to the outside of the equipment is called a chip conveyor device.

Additionally, machine tools use coolant chillers to reduce temperature changes by lowering or increasing the temperature of the coolant. In general, coolant chillers have a coil inside to lower or increase the temperature of the coolant, maintaining the coolant at an appropriate temperature, and circulating and reusing the coolant.

However, if the coolant flowing inside the coolant chiller contains chips generated during processing, and the chips contained in these coolants accumulate inside the coolant chiller, the area where the coolant can be immersed inside the coolant chiller becomes smaller. This reduces the coolant chiller’s performance.

As such, the conventional coolant chiller for machine tools essentially requires a filtering device for the coolant chiller to remove chips from the coolant submerged or flowing inside the coolant chiller, and generally, the filtering device for such coolant chiller is A bag filter was used.

However, the filtering device and method of the conventional coolant chiller for machine tools require periodic replacement as the bag filter is used, and the operator spends a lot of time and money to replace the bag filter, resulting in a waste of resources. There was a problem.

In addition, the filtering device and method of the conventional coolant chiller for machine tools cannot automatically discharge chips loaded in the filtering section, and the entire filtering section must be replaced along with the chips loaded in the filtering section, resulting in increased non-processing time, which reduces productivity. There was a problem that this was degraded and caused inconvenience to workers.

Moreover, in the filtering device and method of the conventional coolant chiller for machine tools, if the bag filter is clogged with chips depending on the type and state of processing before the periodic replacement time of the bag filter, the equipment is damaged or destroyed, increasing maintenance costs and time. There was a problem in that processing precision decreased and the stability and reliability of machine tools deteriorated.

Republic of Korea Patent Registration No. 10-0774663 Republic of Korea Patent Publication No. 10-2018-0130830 Republic of Korea Patent Publication No. 10-2015-01306613

The present invention is to solve the above problems, and the purpose of the present invention is to replace the existing bag filter with a one-time operation, where the control unit controls the operation of the operation unit and the shutter unit according to the status of the filter unit or the type of processing and is loaded into the filter unit. By automatically discharging the filtered chips to the outside of the housing unit, the filtering unit can be reused repeatedly, reducing maintenance costs and time, improving replacement convenience and productivity, promoting operator convenience, preventing resource waste, and This relates to a filtering device and filtering method for a coolant chiller for machine tools that can maximize the safety and reliability of the machine.

In order to achieve the object of the present invention, the filtering device of the coolant chiller for machine tools according to the present invention includes a housing part of the coolant chiller that controls the temperature of the coolant of the machine tool; a filtering unit disposed to be retractable and withdrawn from the housing unit to filter chips contained in the coolant; an operating unit that moves the filtering unit to discharge chips loaded in the filtering unit to the outside of the housing unit; and a control unit that controls the operations of the housing unit, the filtering unit, and the operation unit, wherein the control unit controls the operation of the operation unit according to the state or processing type of the filtering unit so that the filtering unit can be used repeatedly. Chips loaded in the filtering unit can be automatically discharged to the outside of the housing unit.

In addition, in another preferred embodiment of the filtering device for the coolant chiller for machine tools according to the present invention, the filtering unit of the filtering device for the coolant chiller for machine tools filters and stores chips contained in the coolant and stores the coolant. It is provided with a bucket part formed in a mesh structure for passage, and the operating unit is pulled out of the housing part by the bucket part through control of the control unit and rotated at a predetermined angle, and then rotates forward and reverse at a predetermined angle. By repeating the process a predetermined number of times, the chips loaded in the bucket unit can be automatically discharged to the outside of the housing unit.

In addition, in another preferred embodiment of the filtering device for the coolant chiller for machine tools according to the present invention, the housing portion of the filtering device for the coolant chiller for machine tools is opened and closed according to a signal from the control unit to allow the filtering unit to enter or exit. A shutter unit installed on one side of the housing unit may be included.

In addition, in another preferred embodiment of the filtering device of the coolant chiller for machine tools according to the present invention, the filtering portion of the filtering device of the coolant chiller for machine tools is disposed on one side of the bucket portion and is filtered by chips loaded in the bucket portion. a drain portion that diverts the coolant when a blockage occurs; and a sensing unit disposed in the bucket unit or the drain unit.

In addition, in another preferred embodiment of the filtering device for the coolant chiller for machine tools according to the present invention, the operating portion of the filtering device for the coolant chiller for machine tools includes a support portion installed inside the housing portion; A spline coupled to the bucket portion on one side and installed on the support portion to enable linear movement and rotation; a cam box unit installed inside the housing unit and having a driving unit for linearly moving and rotating the spline; and a link unit, one end of which is coupled to the spline and the other end of which is coupled to the cam box unit, and which moves the spline in a straight line in conjunction with the linear movement caused by the drive of the drive unit.

In addition, in another preferred embodiment of the filtering device for the coolant chiller for machine tools according to the present invention, the operating portion of the filtering device for the coolant chiller for machine tools is a coupling portion formed on one side of the spline to be coupled to the bucket portion. ; And it may further include a sealing part installed between the support part and the spline part.

In addition, in another preferred embodiment of the filtering device for the coolant chiller for machine tools according to the present invention, the mesh structure of the bucket portion of the filtering device for the coolant chiller for machine tools is formed on the side and/or bottom surface of the bucket portion, , the mesh structure may be formed to have a size of 50 mesh or more and 100 mesh or less.

In addition, in another preferred embodiment of the filtering device for the coolant chiller for machine tools according to the present invention, the bottom surface of the bucket portion is perpendicular to the spline when the bucket portion of the filtering device for the coolant chiller for machine tools is in the original position. In order to prevent residual chips from flowing into the spline and the sealing portion, a portion or all of the mesh structure may be absent or may be formed more densely than the mesh structure formed on the side of the bucket portion.

In addition, in another preferred embodiment of the filtering device of the coolant chiller for machine tools according to the present invention, the control unit of the filtering device of the coolant chiller for machine tools automatically moves the chips loaded in the bucket to the outside of the housing. a memory unit that stores data to be discharged; an analysis unit that analyzes the operation order and operation status of the shutter unit and the spline based on data stored in the memory unit and data sensed through the sensing unit; and a processing unit that operates the shutter unit and the spline or generates an alarm according to the data stored in the memory unit and the analysis result of the analysis unit.

In addition, in another preferred embodiment of the filtering device of the coolant chiller for machine tools according to the present invention, the memory unit of the filtering device of the coolant chiller for machine tools includes the processing type of the workpiece of the machine tool, processing time, and the reference weight of the bucket portion. , a basic data storage unit that stores the reference time, and processing program; and a sensing data storage unit that stores sensing data of the sensing unit.

In addition, in another preferred embodiment of the filtering device of the coolant chiller for machine tools according to the present invention, the analysis unit of the filtering device of the coolant chiller for machine tools determines the sensing data stored in the sensing data storage unit and the current opening/closing of the shutter unit. A confirmation unit that checks whether And according to the confirmation result of the confirmation unit, the sensing data stored in the sensing data unit and the processing time, reference weight, or reference time stored in the basic data storage unit are compared and analyzed to determine whether the chip loaded in the bucket unit is outside the housing unit. It may include a judgment unit that determines whether discharge is necessary.

In addition, in another preferred embodiment of the filtering device of the coolant chiller for machine tools according to the present invention, the processing unit of the filtering device of the coolant chiller for machine tools discharges the chips loaded in the bucket unit as a result of the determination of the determination unit. A command unit that transmits a signal to a driving unit of the shutter unit and the cam box unit to open the shutter unit and move the spline forward and rotationally when necessary; and an alarm unit that generates an alarm when coolant is drained into the drain unit as a result of the verification unit.

In addition, in another preferred embodiment of the filtering device of the coolant chiller for machine tools according to the present invention, the filtering device of the coolant chiller for machine tools opens the shutter unit according to a signal from the processing unit, and the spline is connected to the cam box unit. After the spline moves forward by the drive unit, it rotates forward by 180 degrees, and the bucket part is inverted, and 15 degrees of forward rotation and reverse rotation are repeated three to seven times, and then the spline rotates backward by 180 degrees. Thus, after the spline moves backward with the bucket part in its original position, the shutter part is closed, thereby automatically discharging the chips loaded in the bucket part to the outside of the housing part.

In addition, in another preferred embodiment of the filtering device for the coolant chiller for machine tools according to the present invention, the filtering unit of the filtering device for the coolant chiller for machine tools filters and stores chips contained in the coolant and stores the coolant. It is provided with a bucket part formed in a mesh structure for passage, and the operating unit draws the bucket part out of the housing part through the control of the control unit and rotates the bucket part at a predetermined angle, and then retracts the bucket part into the housing part. By repeating the drawing operation a predetermined number of times, the chips loaded in the bucket unit can be automatically discharged to the outside of the housing unit.

In order to achieve another object of the present invention, the filtering method of the coolant chiller for machine tools according to the present invention includes the steps of storing data for automatically discharging chips loaded in the bucket unit to the outside of the housing unit; Sensing with a sensing unit; Checking the sensing result of the sensing unit and whether a shutter unit installed on one side of the housing unit is opened or closed; Comparing and analyzing the sensing result and previously stored data according to the confirmation result to determine whether the chip loaded in the bucket unit needs to be discharged to the outside of the housing; As a result of the determination, if it is necessary to discharge the chips loaded in the bucket unit, sending a signal to the driving unit of the shutter unit and the cam box unit to command and open the shutter unit and move the spline forward and rotationally may include; .

In addition, in another preferred embodiment of the filtering method of the coolant chiller for machine tools according to the present invention, the filtering method of the coolant chiller for machine tools is such that the coolant flows to the drain according to the sensing result and the confirmation result after the confirmation step. A step of generating an alarm when drained may be further included.

The filtering device and filtering method of the coolant chiller for machine tools according to the present invention are not one-time, unlike existing bag filters, but the control unit controls the operation of the operation unit and the shutter unit depending on the status of the filter unit or the type of processing, so that the filtering unit loaded in the filtering unit By automatically discharging chips to the outside of the housing unit, the filtering unit can be reused repeatedly, which has the effect of reducing maintenance costs and time due to replacement of existing bag filters and preventing waste of resources.

In addition, in the filtering device and filtering method of the coolant chiller for machine tools according to the present invention, the control unit controls the operation of the operation unit and the shutter unit to automatically discharge chips loaded in the filtering unit to the outside of the housing unit, thereby reducing the non-processing time. This has the effect of maximizing productivity and improving processing precision by maintaining a constant coolant temperature.

Moreover, the filtering device and filtering method of the coolant chiller for machine tools according to the present invention automatically discharge chips loaded in the filtering unit to the outside and generate an alarm when the filtering unit is clogged to quickly notify the operator of the equipment. It has the effect of preventing damage or breakage in advance and improving the stability and reliability of machine tools.

In addition, in the filtering device and filtering method of the coolant chiller for machine tools according to the present invention, the control unit controls the operation of the operation unit and the shutter unit to automatically discharge chips loaded in the filtering unit to the outside of the housing unit, thereby improving operator convenience. It has the effect of preventing safety accidents in advance.

Figure 1 shows a conceptual diagram of a filtering device for a coolant chiller for machine tools according to the present invention.
2 to 7 show conceptual diagrams according to the operating state according to the operating sequence of the filtering device of the coolant chiller for machine tools according to the present invention.
Figure 8 shows the configuration of the control unit of the filtering device of the coolant chiller for machine tools according to the present invention.
Figure 9 shows a procedure diagram of the filtering method of the coolant chiller for machine tools according to the present invention.
Figure 10 shows a procedure diagram for the operating sequence of the filtering method of the coolant chiller for machine tools according to the present invention.

Hereinafter, the filtering device and filtering method of the coolant chiller for machine tools according to an embodiment of the present invention will be described in detail with reference to the drawings. The embodiments introduced below are provided as examples so that the idea of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. Also, in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals refer to like elements throughout the specification.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. These embodiments only serve to ensure that the disclosure of the present invention is complete and that common knowledge in the technical field to which the present invention pertains is provided. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification. The sizes and relative sizes of layers and regions in the drawings may be exaggerated for clarity of explanation.

The terminology used herein is for describing embodiments and is therefore not intended to limit the invention. As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, “comprise” and/or “comprising” refers to the presence of one or more other components, steps, operations and/or elements. or does not rule out addition.

Figure 1 shows a conceptual diagram of a filtering device for a coolant chiller for machine tools according to the present invention, and Figures 2 to 7 are conceptual diagrams according to the operating state according to the operating sequence of the filtering device for a coolant chiller for machine tools according to the present invention. represents. Figure 8 shows the configuration of the control unit of the filtering device of the coolant chiller for machine tools according to the present invention. Figure 9 shows a procedure diagram of the filtering method of the coolant chiller for machine tools according to the present invention, and Figure 10 shows a procedure diagram of the operation sequence of the filtering method of the coolant chiller for machine tools according to the present invention.

The filtering device 1 of the coolant chiller for machine tools according to the present invention will be described with reference to FIGS. 1 to 8. As shown in Figures 1 to 8, the filtering device 1 of the coolant chiller for machine tools according to the present invention includes a housing part 100, a filtering part 200, an operating part 300, and a control part 400. Includes.

The housing unit 100 controls the temperature of the coolant of the machine tool. In other words, the housing part is the housing part of the coolant chiller, and a space is formed inside to store the coil and coolant. When the coolant is stored, the temperature of the coolant is raised or lowered through a coil, etc. to maintain a constant temperature of the coolant. keep it that way

The filtering unit 200 is disposed so as to be retractable and withdrawn from the housing unit and filters chips contained in the coolant. The filtering unit filters and stores chips contained in the coolant and includes a bucket unit formed in a mesh structure to allow the coolant to pass through.

The operating unit 300 moves the filtering unit to discharge the chips loaded on the filtering unit to the outside of the housing unit.

The control unit 400 controls the operations of the housing unit, filtering unit, and operating unit. That is, the control unit automatically discharges the chips loaded in the filtering unit to the outside of the housing unit by controlling the operation of the operating unit according to the state or processing type of the filtering unit so that the filtering unit can be used repeatedly. Specifically, the control unit 400 controls the operating sequence and operating state of the shutter unit and the operating unit of the housing unit, which will be described later, and performs a function of automatically discharging chips loaded in the filtering unit to the outside of the housing unit.

That is, the operating unit is pulled out of the housing unit by the bucket unit under the control of the control unit, rotated at a predetermined angle, and repeats forward and reverse rotation at a predetermined angle a predetermined number of times, thereby loading the chip into the bucket unit. can be automatically discharged to the outside of the housing.

In addition, the operating unit loads the bucket into the bucket by repeatedly performing the operation of drawing the bucket into and out of the housing a predetermined number of times while rotating it at a predetermined angle by pulling the bucket out of the housing through the control of the control unit. Chips can be automatically discharged to the outside of the housing. In other words, the operating unit pulls the bucket out of the housing in a simpler operation, rotates it 180 degrees, and repeats the operation of moving the spline forward and backward, which will be described later, about 3 to 7 times, so that the chips loaded in the bucket are secondary. It can be completely removed to improve control convenience and speed of work.

In this way, the filtering device of the coolant chiller for machine tools according to the present invention is not one-time, unlike the existing bag filter, but the control unit controls the operation of the operation unit and the shutter unit depending on the status of the filter unit or the type of processing, so that the chips loaded in the filtering unit are removed. By automatically discharging to the outside of the housing unit, the filtering unit can be reused repeatedly, thereby reducing maintenance costs and time due to replacement of existing bag filters and preventing waste of resources.

As shown in FIGS. 1 to 7, the housing portion 100 of the filtering device 1 of the coolant chiller for machine tools according to the present invention includes a shutter portion 110, and the filtering portion 200 includes a bucket portion. It includes (210), a drain part (220), and a sensing part (230).

The shutter unit 110 is installed on one side of the housing unit so that it can be opened and closed according to a signal from the control unit for insertion or withdrawal of the filtering unit 200. That is, when the shutter unit (110) receives a signal from the control unit and opens, the bucket unit of the filtering unit 200 is pulled out to the outside of the housing unit, and the chips loaded in the bucket unit are discharged to the outside of the housing unit and then returned to the inside of the housing unit. After the furnace bucket unit is retracted, the shutter unit remains closed according to a signal from the control unit.

The bucket portion 210 is formed with a mesh structure to filter and store chips contained in the coolant and allow the coolant to pass through. Additionally, this bucket portion is formed in a hexahedral shape with an open top surface.

That is, the mesh structure of the bucket portion may be formed on the side and/or bottom surface of the bucket portion. Specifically, it can be formed on all four sides of the hexahedral shape of the bucket portion, and if necessary, all four sides and the bottom can be formed into a mesh structure.

Additionally, this mesh structure may be formed to have a size of 50 mesh or more and 100 mesh or less. In this way, through the mesh structure, the coolant passes through the bucket portion and flows inside the housing portion, and the chips contained in the coolant are filtered out and loaded into the bucket portion. If the mesh structure is formed less than 50 mesh, clogging by chips occurs too frequently, reducing productivity, and if the mesh structure is formed more than 100 mesh, chips cannot be filtered out and too many chips remain in the coolant. A problem occurs in which the effectiveness of the coolant chiller is reduced and the processing quality deteriorates.

In addition, in another preferred embodiment of the filtering device of the coolant chiller for machine tools according to the present invention, the bucket portion of the filtering device of the coolant chiller for machine tools is the bottom surface of the bucket portion perpendicular to the spline with the bucket portion in the original position. A portion or all of the mesh structure may not have a mesh structure to prevent residual chips from entering the spline and sealing portion, or the mesh structure may be formed more densely than the mesh structure formed on the side of the bucket portion. That is, as shown in Figure 4, when the bucket part is in the original position, a portion or the entire bottom surface of the bucket part perpendicular to the spline has no mesh structure (Figures 1 to 1) to prevent residual chips from flowing into the spline and sealing part. 7 shows a bucket portion without a mesh structure), even if the mesh structure is located on a portion of the bottom surface, the mesh structure on the bottom surface of the bucket portion may be formed smaller than the 50 mesh structure on the side.

The drain portion 220 is disposed on one side of the bucket portion and functions to divert coolant when the bucket portion is clogged by chips loaded therein. In other words, the drain part is installed on one side of the bucket part in a joint structure for connecting the drain pipe, and when the bucket part is clogged by chips loaded, it has the function of bypassing the coolant supplied to the bucket part along the drain part. Perform. Accordingly, it prevents the equipment from stopping due to insufficient flow, and when the coolant bypasses the drain part, an alarm is generated through the alarm part of the control unit, which will be described later, to prevent damage or destruction of the equipment and eliminate the need for operators to continuously monitor the equipment. By notifying emergency situations quickly and accurately, it can ensure the stability and reliability of machine tools and promote operator convenience.

The sensing unit 230 is disposed in the bucket unit or drain unit, generates a signal according to the sensing result, and transmits it to the control unit.

According to one embodiment of the present invention, the sensing part is formed in the form of a flow switch in the bucket part or the drain part, and when a chip is loaded in the bucket part and the bucket part is blocked and the coolant is bypassed through the drain part, the sensing part is formed as a flow switch. Signals are generated through the unit, and these signals can be transmitted to the sensing data storage unit, which will be described later.

In addition, according to another embodiment of the present invention, the sensing unit is a weight sensor installed in the bucket unit, which senses the weight of the chip loaded on the bucket unit, generates a signal in real time, and transmits this signal to the sensing data storage unit to store the sensing data. Automatic chip ejection from the bucket unit can be performed by comparing the data stored in the unit and the standard weight stored in the basic data storage unit with each other in the judgment unit.

In addition, according to another embodiment of the present invention, the sensing unit is a time sensor installed in the bucket unit, which generates a signal when a certain period of time has elapsed and transmits this signal to the sensing data storage unit to collect the data stored in the sensing data storage unit and the basic data. Automatic chip ejection from the bucket unit can be performed by comparing the reference time stored in the storage unit with the judgment unit.

Accordingly, the operating unit is pulled out of the housing unit by the bucket unit under the control of the control unit, rotated at a predetermined angle, and repeats forward and reverse rotation at a predetermined angle a predetermined number of times, thereby loading the chips in the bucket unit. is automatically discharged to the outside of the housing. In other words, depending on the type of the sensing unit, the sensing result of the sensing unit is transmitted to the sensing data storage unit, and the data stored in the basic data storage unit and the data stored in the sensing data storage unit are compared and analyzed by the judgment unit to receive a processing signal from the processing unit of the corresponding control unit. The operating unit is pulled out of the housing by the bucket and rotated at a predetermined angle. By repeating forward and reverse rotation at a predetermined angle a predetermined number of times, the chips loaded in the bucket are automatically moved to the outside of the housing. It is discharged as

As shown in Figures 1 to 7, the operating part 300 of the filtering device 1 of the coolant chiller for machine tools according to the present invention includes a support part 310, a spline 320, and a cam box part 330. , a link portion 340, a coupling portion 350, and/or a sealing portion 360.

The support part 310 is installed inside the housing part. That is, the support part is fixedly installed inside the housing part, and the spline is installed through the support part, so that the spline can move linearly and rotate according to the drive of the driving part of the cam box part. The support portion is installed adjacent to the shutter portion of the housing portion.

The spline 320 has a bucket portion coupled to one side of the spline, and is installed on the support portion to enable linear movement and rotation. That is, the spline is coupled to the bucket portion through a coupling portion on one side and is installed through the support portion. Accordingly, the spline is connected to the cam box part according to the drive of the drive part of the cam box part and rotates by the transmission part that transmits the rotational power of the drive part in conjunction, and moves linearly according to the cam diagram of the cam box part according to the rotational power of the drive part. It moves linearly back and forth in the support section by the link section.

The cam box unit 330 has a driving unit for linearly moving and rotating the spline, and is installed inside the housing unit. That is, although not shown in the drawing, the cam box part is formed in the shape of a disk and has a cam that rotates according to the driving of the driving part, and the link part moves forward or backward in conjunction with the rotation of the cam according to the driving of the driving part. The spline moves forward or backward in conjunction with the forward or backward movement of the link part. In addition, through the transmission unit 332, one side of which is connected to the rotation axis of the drive unit of the cam box unit and the other side connected to the spline, the transmission unit rotates in conjunction with the rotation of the drive unit 331, and the spline rotates in conjunction with the rotation of the transmission unit. . Although not necessarily limited to this, the driving unit may be formed as a servo motor to repeatedly perform forward and reverse rotation or forward and reverse rotation of the spline at a predetermined angle a predetermined number of times. Additionally, this transmission part may be formed of a belt, chain, etc.

One end of the link unit 340 is coupled to the spline, and the other end of the link unit is coupled to the cam box unit to move the spline in a straight line in conjunction with the linear movement caused by the driving unit. That is, one end of the link part is coupled to a spline, and the other end of the link part is coupled to a cam of the cam box part (not shown in the drawing) and moves immediately in conjunction with the rotational drive of the cam of the cam box part that rotates according to the drive of the drive part, and this linear movement It moves in a straight line by interlocking the splines.

The coupling portion 350 is formed on one side of the spline to be coupled to the bucket portion. That is, the coupling portion is formed at one end of the spline and is connected to the bucket portion through methods such as bolts, rivets, and welding, thereby moving the bucket portion linearly or rotationally in conjunction with the linear or rotational movement of the spline, and at the same time, maintaining the bucket portion and It can be easily combined and miniaturized.

The sealing part 360 is installed between the support part and the spline part. In other words, the sealing part is installed between the support part and the spline part to prevent coolant and foreign substances from entering the operating part when the spline is driven, thereby reducing maintenance costs and improving the stability and reliability of the equipment.

As shown in Figures 1 and 8, the control unit 400 of the filtering device 1 of the coolant chiller for machine tools according to the present invention includes a memory unit 410, an analysis unit 420, and a processing unit 430. Includes.

The control unit includes NC (numerical control) or CNC (computerized numerical control) and PLC, and various numerical control programs are built in. That is, the control unit is equipped with processing programs, drive programs, and operation programs for the processing unit, drive unit, and shutter unit, and the corresponding programs are automatically loaded and operated according to the operation of the control unit. Additionally, the control unit communicates with the processing unit, drive unit, shutter unit, and PLC using a predetermined protocol.

In addition, although not shown in the drawings, according to a preferred embodiment of the present invention, the control unit includes a main operation unit, and this main operation unit includes a screen display program and a data input program according to screen display selection, and the screen display program It displays a software switch on the display screen according to the output, recognizes the ON/OFF status of the software switch, and performs the function of issuing input/output commands for machine operation.

In addition, although not necessarily limited to this, the main operating unit is installed on the case or one side of the machine tool and includes various function switches or buttons and a monitor capable of displaying various information.

PLC (Programmable Logic Controller) communicates with the control unit, processing unit, shutter unit, drive unit, etc. according to a prescribed protocol, and performs the function of executing control commands through this communication. In other words, the PLC operates the processing unit, shutter unit, drive unit, etc. according to the numerical control program of the control unit.

In addition, although not shown in the drawing, the control unit of the filtering device according to the present invention may include a display unit that can improve user or worker convenience by displaying the results of the memory unit, analysis unit, processing unit, and sensing unit in real time. These display units include liquid crystal display (LCD), thin film transistor-liquid crystal display (TFT LCD), organic light-emitting diode (OLED), and flexible display. , a 3D display, or an e-ink display.

In addition, although not necessarily limited to this, the display unit is formed in the form of a touch screen and can be installed on the case or one side of the machine tool to display various function switches or buttons and various information.

The memory unit 410 stores data for automatically discharging chips loaded in the bucket unit to the outside of the housing unit. The memory unit may be a variety of storage devices such as ROM, RAM, EPROM, flash drive, hard drive, etc., or may be web storage that performs the storage function of the memory unit 310 on the Internet.

The analysis unit 420 analyzes the operation order and operation status of the shutter unit and spline based on data stored in the memory unit and data sensed through the sensing unit.

The processing unit 430 operates the shutter unit and spline or generates an alarm according to the data stored in the memory unit and the analysis results of the analysis unit.

As shown in Figure 8, the memory unit 410 of the control unit of the filtering device 1 of the coolant chiller for machine tools according to the present invention includes a basic data storage unit 411 and a sensing data storage unit 412. .

The basic data storage unit 411 stores the processing type of the workpiece of the machine tool, the processing time, the reference weight of the bucket portion, the reference time, and the processing program.

The sensing data storage unit 412 stores real-time sensing data of the sensing unit.

As shown in FIG. 8, the analysis unit 420 of the control unit of the filtering device 1 of the coolant chiller for machine tools according to the present invention includes a confirmation unit 421 and a determination unit 422.

The confirmation unit 421 checks the sensing data stored in the sensing data storage unit and whether the shutter unit is currently opened or closed.

The determination unit 422 compares and analyzes the sensing data stored in the sensing data unit and the processing time, reference weight, or standard time stored in the basic data storage unit according to the confirmation result of the confirmation unit to determine whether the chip loaded in the bucket unit is outside of the housing. Determine whether discharge is necessary.

As shown in FIG. 8, the processing unit 430 of the control unit of the filtering device 1 of the coolant chiller for machine tools according to the present invention includes a command unit 431 and an alarm unit 432.

The command unit 431 transmits a signal to the driving unit of the shutter unit and the cam box unit in order to open the shutter unit and move the spline forward and rotationally when the chip loaded in the bucket unit needs to be ejected as a result of the determination unit. That is, the shutter part is opened according to a signal from the command part of the processing part, the spline is moved forward by the driving part of the cam box part, and then rotated forward by 180 degrees, and the bucket part is inverted, and rotated 15 degrees forward and reverse three or more times to 7 times. After performing the process no more than once, the spline is reversely rotated 180 degrees, the spline moves backward with the bucket part in its original position, and then the shutter part is closed, automatically discharging the chips loaded in the bucket part to the outside of the housing part.

The alarm unit 432 generates an alarm when coolant is drained into the drain unit as a result of the verification unit.

Therefore, in the filtering device of the coolant chiller for machine tools according to the present invention, the control unit controls the operation of the operation unit and the shutter unit to automatically discharge chips loaded in the filtering unit to the outside of the housing unit, thereby reducing non-processing time. It maximizes productivity, improves processing precision by maintaining a constant coolant temperature, and generates an alarm when the filter part is clogged to quickly notify the operator, preventing equipment damage or destruction in advance and improving the stability of machine tools. It improves reliability, promotes worker convenience, and prevents safety accidents.

Referring to FIGS. 1 to 8 and 10, the filtering operation principle of the filtering device and filtering method for a machine tool according to the present invention will be described.

As shown in Figure 1, as the coolant flows into the bucket part of the filtering part, the chips contained in the coolant are loaded into the bucket part through the mesh structure of the bucket part, and the coolant moves to the coolant chiller to maintain the temperature.

While the coolant flows in the bucket, the data sensed through the sensing unit installed in the bucket or drain is transmitted to the sensing data storage unit through a signal in real time. That is, when the sensing unit is a flow switch and the flow switch is detected, a detection signal is transmitted to the sensing data storage unit to proceed with the chip removal operation of the bucket unit. In contrast, when coolant flowing into the drain is detected, the corresponding signal is transmitted to the sensing data storage unit, and the confirmation unit confirms this to generate an alarm. Additionally, if the sensing unit is a weight sensor, the weight of the bucket unit is continuously sensed and the weight data of the bucket unit is transmitted to the sensing data storage unit. Additionally, if the sensing unit is a time sensor (timer), the coolant flows into the bucket unit and continuously detects the supplied time and transmits this to the sensing data storage unit.

Afterwards, the confirmation unit checks whether the shutter unit is open or closed and the presence or absence of stored data in the sensing data storage unit while the sensing data of the sensing unit is stored in real time in the sensing data storage unit.

After checking the sensing data and whether the shutter unit is opened or closed in the confirmation unit, if it is confirmed that the coolant is not drained through the drain unit, the judging unit determines the sensing data stored in the sensing data unit, the processing time, and the standard weight stored in the basic data storage unit according to the confirmation result. , or compare and analyze the standard time to determine whether the chips loaded in the bucket need to be discharged to the outside of the housing. Specifically, for example, if the sensing part is a weight sensor, the current weight of the bucket part in the sensing data is compared with the standard weight, and if the current weight is greater than the standard weight, it is determined that chip discharge from the bucket part is necessary. Additionally, specifically, when the sensing unit is a timer sensor, the current sensing data is compared with the time and the standard time, and when the standard time is exceeded, it is determined that chip discharge from the bucket unit is necessary.

As a result of the determination of the judgment unit, if it is determined that the chips loaded in the bucket unit need to be discharged to the outside of the housing unit, the command unit opens the shutter unit and transmits an operating signal to the driving unit of the shutter unit and cam box unit to move the spline forward and rotationally. .

The shutter unit opens primarily according to the operation signal from the command unit (see S51 in Figs. 2 and 10).

Afterwards, the driving part of the cam box part operates according to the operation signal of the command part, the link part moves forward in conjunction with the rotation of the cam according to the operation of the cam box driving part, and the spline moves forward in conjunction with the forward movement of the link part. At this time, the position of the bucket part becomes the original position (A). (See S52 in FIGS. 3 and 4 and FIG. 10)

Afterwards, according to the operation signal from the command unit, the driving part of the cam box rotates 180 degrees forward, and in conjunction with the 180 degree forward rotation of the driving part, the spline rotates 180 degrees forward through the transmission part. At this time, the position of the bucket part is in an inverted state (B). (S53 in FIGS. 5 and 10) As the spline rotates forward 180 degrees and is in an inverted state, the bucket part is also linked and is in an inverted state of 180 degrees to the bucket part. The loaded chips are initially discharged into the chip collection tank (2).

However, even when the bucket unit is rotated forward by 180 degrees and is in an inverted state (B), there are cases where the chips loaded in the bucket unit are not completely removed into the chip collection tank (2). To solve this problem, the spline rotates 180 degrees forward, the bucket part rotates 180 degrees forward and is inverted (B), and 15 degrees forward rotation (C1) and 15 degrees reverse rotation (C2) are repeated at least 3 to 7 times. and perform it. (S54 in FIGS. 6 and 7 and FIG. 10) In this way, the spline rotates 180 degrees forward and the bucket portion is inverted, and a significant portion of the chips initially loaded in the bucket portion are discharged to the chip collection tank 2, thereby discharging the housing. Chips contained in the coolant can be discharged to the outside, but due to the nature of the chips, in order to completely and quickly remove the remaining chips remaining in the bucket, the spline is rotated 15 degrees in the forward and reverse directions of the cam box unit according to the signal from the command unit. By repeating this process at least 7 times to 7 times, the chips remaining in the bucket are secondaryly shaken off and completely and quickly removed to improve productivity by reducing maintenance time due to removal of chips loaded on the bucket. Maintenance costs can be reduced by reusing parts.

In addition, even when the bucket unit is rotated forward by 180 degrees and is in an inverted state (B), there are cases where the chips loaded in the bucket unit are not completely removed into the chip collection tank (2). To solve this problem, the spline rotates 180 degrees forward and the bucket portion rotates 180 degrees forward and is inverted (B). Instead of performing forward and reverse rotations at an angle of 15 degrees, the chip loaded in the bucket portion is moved through a simpler operation. can be discharged secondaryly. In other words, in the state where the bucket part moves forward and rotates 180 degrees forward and is inverted (B), the spline repeats forward and backward movement in one cycle about 3 to 7 times, thereby secondarily shaking off the remaining chips in the bucket part. You can remove the chips loaded in the bucket more quickly and easily.

Afterwards, according to the signal from the command unit, the drive unit rotates 180 degrees in reverse, and the spline is linked through the transmission unit to rotate 180 degrees in reverse, moving the bucket unit to its original position (B) (S55 in Figure 10).

Afterwards, the link unit moves backward by the cam as the drive unit of the cam box unit is driven according to the signal from the command unit, and the bucket unit moves backward as the spline moves backward in conjunction with the link unit (S56 in FIG. 10).

Afterwards, the shutter unit closes according to a signal from the command unit (S57 in FIG. 10).

In this way, the bucket unit according to the present invention first removes the chips loaded in the bucket unit by rotating them 180 degrees to the outside of the housing through the command unit of the control unit, and secondarily rotates forward and backward at a predetermined angle of 15 degrees for 3 to 3 times. By repeating the removal process about 7 times, the chips loaded in the bucket can be automatically, quickly and accurately discharged to the outside of the housing.

Referring to Figure 9, the filtering method of the coolant chiller for machine tools according to the present invention will be described. As shown in Figure 9, the filtering method of the coolant chiller for machine tools according to the present invention includes a data storage step (S1), a sensing step (S2), a confirmation step (S3), a judgment step (S4), and a command step (S5). ), and an alarm step (S6). In each step, the specific operating process, operating principle, configuration, and contents of the device are the same as the filtering device of the coolant chiller for machine tools in the specification of the present invention, so hereinafter, the filtering method of the coolant chiller for machine tools will be described with reference to FIG. 9. The unique features of are explained with emphasis.

Data for automatically discharging chips loaded in the bucket to the outside of the housing is stored.

After the data storage step (S1), sensing is performed using a sensing unit installed in the bucket unit or drain unit.

After the sensing step (S2), the sensing result of the sensing unit and whether the shutter unit installed on one side of the housing unit is opened or closed are checked in the confirmation unit.

After the confirmation step (S3), based on the confirmation result, the sensing result is compared and analyzed with the previously stored data stored in the memory unit, and the judgment unit determines whether the chip loaded in the bucket unit needs to be discharged to the outside of the housing.

After the judgment step (S4), if it is necessary to discharge the chips loaded in the bucket as a result of the judgment, a signal is sent to the drive unit of the shutter unit and the cam box unit to command and open the shutter unit and move the spline forward and rotationally.

After the command step (S5), an alarm is generated when coolant is drained into the drain unit according to the sensing result and confirmation result.

In this way, the filtering method of the coolant chiller for machine tools according to the present invention is not one-time, unlike the existing bag filter, but the control unit controls the operation of the operation unit and the shutter unit depending on the status of the filter unit or the type of processing, so that the chips loaded in the filtering unit are removed. By automatically discharging the filter to the outside of the housing, the filtering part can be reused repeatedly, reducing maintenance costs and time due to replacement of existing bag filters, preventing resource waste, maximizing productivity by reducing non-processing time, and cooling the filter. By keeping the runt temperature constant, processing precision can be improved.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those skilled in the art or those skilled in the art will understand the present invention as described in the patent claims to be described later. It will be understood that the present invention can be modified and changed in various ways without departing from the spirit and technical scope. Therefore, the technical scope of the present invention should not be limited to what is described in the detailed description of the specification, but should be defined by the scope of the patent claims.

1: Coolant chiller filtering device
100: Housing part
200: filtering unit
300: operating unit
400: control unit

Claims (16)

A housing portion of a coolant chiller that controls the temperature of the coolant of the machine tool;
a filtering unit disposed to be retractable and withdrawn from the housing unit to filter chips contained in the coolant;
an operating unit that moves the filtering unit to discharge chips loaded in the filtering unit to the outside of the housing unit; and
It includes a control unit that controls the operations of the housing unit, the filtering unit, and the operating unit,
The control unit controls the operation of the operating unit according to the status or processing type of the filtering unit so that the filtering unit can be used repeatedly, and automatically discharges chips loaded on the filtering unit to the outside of the housing unit. Filtering device for coolant chiller.
According to paragraph 1,
The filtering part has a bucket part formed in a mesh structure to filter and store chips contained in the coolant and allow the coolant to pass through,
The operating unit is pulled out of the housing unit by the bucket unit through control of the control unit, rotated at a predetermined angle, and then repeatedly performs forward rotation and reverse rotation at a predetermined angle a predetermined number of times. A filtering device for a coolant chiller for machine tools, characterized in that automatically discharges loaded chips to the outside of the housing.
According to paragraph 2,
The housing part,
A filtering device for a coolant chiller for a machine tool, comprising a shutter unit installed on one side of the housing unit to be opened and closed according to a signal from the control unit to allow the filtering unit to be drawn in or out.
According to paragraph 3,
The filtering unit,
a drain portion disposed on one side of the bucket portion to divert the coolant when the bucket portion is clogged by chips loaded thereon; and
A filtering device for a coolant chiller for machine tools, comprising: a sensing unit disposed on the bucket unit or the drain unit.
According to paragraph 4,
The operating unit,
A support part installed inside the housing part;
A spline coupled to the bucket portion on one side and installed on the support portion to enable linear movement and rotation;
a cam box unit installed inside the housing unit and having a driving unit for linearly moving and rotating the spline; and
A coolant chiller for machine tools, including a link unit that has one end coupled to the spline and the other end coupled to the cam box unit to move the spline in a straight line in conjunction with the linear movement caused by the drive of the drive unit. of filtering device.
According to clause 5,
The operating unit,
A coupling portion formed on one side of the spline to be coupled to the bucket portion; and
A filtering device for a coolant chiller for machine tools, further comprising a sealing part installed between the support part and the spline part.
According to paragraph 2,
The mesh structure of the bucket portion is formed on the side and/or bottom surface of the bucket portion,
A filtering device for a coolant chiller for machine tools, characterized in that the mesh structure is formed to be 50 mesh or more and 100 mesh or less.
According to clause 6,
When the bucket part is in its original position, a portion or entire bottom surface of the bucket part that is perpendicular to the spline has no mesh structure or a mesh formed on the side of the bucket part to prevent residual chips from entering the spline and the sealing part. A filtering device for a coolant chiller for machine tools, characterized in that it is formed more densely than the structure.
According to clause 5,
The control unit,
a memory unit that stores data for automatically discharging chips loaded in the bucket unit to the outside of the housing unit;
an analysis unit that analyzes the operation order and operation status of the shutter unit and the spline based on data stored in the memory unit and data sensed through the sensing unit; and
A processing unit that operates the shutter unit and the spline or generates an alarm according to the data stored in the memory unit and the analysis result of the analysis unit.
According to clause 9,
The memory unit,
A basic data storage unit that stores the workpiece processing type, processing time, reference weight of the bucket portion, reference time, and processing program of the machine tool; and
A filtering device for a coolant chiller for a machine tool, comprising: a sensing data storage unit that stores sensing data of the sensing unit.
According to clause 10,
The analysis unit,
a confirmation unit that checks the sensing data stored in the sensing data storage unit and whether the shutter unit is currently opened or closed; and
According to the confirmation result of the confirmation unit, the sensing data stored in the sensing data unit and the processing time, standard weight, or standard time stored in the basic data storage unit are compared and analyzed to ensure that the chip loaded in the bucket unit is discharged to the outside of the housing unit. A filtering device for a coolant chiller for machine tools, comprising a judgment unit that determines whether this is necessary.
According to clause 11,
The processing unit,
A command unit that transmits a signal to a driving unit of the shutter unit and the cam box unit to open the shutter unit and move the spline forward and rotationally when the judgment result of the determination unit determines that it is necessary to discharge the chips loaded in the bucket unit; and
An alarm unit that generates an alarm when coolant is drained into the drain unit as a result of the confirmation of the confirmation unit.
According to clause 9,
According to a signal from the processing unit, the shutter unit is opened, and the spline is rotated forward by 180 degrees after the spline is moved forward by the drive unit of the cam box unit, and the bucket unit is rotated 15 degrees forward and reverse three times in an inverted state. After repeating the process no less than 7 times, the spline is reversely rotated 180 degrees, the spline moves backward with the bucket part in its original position, and then the shutter part is closed, thereby removing the chip loaded in the bucket part from the housing. A filtering device for a coolant chiller for machine tools, which is characterized by automatically discharging it to the outside of the unit.
According to paragraph 1,
The filtering part has a bucket part formed in a mesh structure to filter and store chips contained in the coolant and allow the coolant to pass through,
The operating unit pulls the bucket unit out of the housing unit through control of the control unit and rotates the bucket unit at a predetermined angle by repeatedly performing an operation of inserting and withdrawing the bucket unit into and out of the housing unit a predetermined number of times. A filtering device for a coolant chiller for machine tools, characterized in that the chips loaded in the bucket unit are automatically discharged to the outside of the housing unit.
Storing data for automatically discharging chips loaded in the bucket unit to the outside of the housing unit;
Sensing with a sensing unit;
Checking the sensing result of the sensing unit and whether a shutter unit installed on one side of the housing unit is opened or closed;
Comparing and analyzing the sensing result and previously stored data according to the confirmation result to determine whether the chip loaded in the bucket unit needs to be discharged to the outside of the housing unit;
As a result of the determination, if it is necessary to discharge the chips loaded in the bucket unit, sending a signal to the driving unit of the shutter unit and the cam box unit to command and open the shutter unit and move the spline forward and rotationally. Filtering method of coolant chiller for machine tools.
According to clause 15,
After the above confirmation step,
A filtering method for a coolant chiller for a machine tool, further comprising: generating an alarm when coolant is drained into the drain unit according to the sensing result and the confirmation result.

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