Cutting fluid tank for machine tool and fluid path control method

Abstract

The present invention relates to a cutting fluid tank for a machine tool and a fluid path control method. The cutting fluid tank comprises a first tank body, a second tank body, and a third tank body. The first tank body is provided with a flow return port and a first fluid level switch. A bottom surface of the second tank body is connected to a top surface of the first tank body, and a bottom surface of the third tank body is connected to the top surface of the second tank body. The third tank body is provided with a fluid input port and a second fluid level switch. The first tank body is in communication with the third tank body by means of a first pipe, and the first tank body is caused by means of a first pump body to supply fluid to the third tank body. The second tank body is in communication with the first tank body by means of a second pipe, and the second tank body is caused by means of an electric valve to supply fluid to the first tank body. According to the present invention, by means of optimizing the structural design and fluid path control, the occupied area can be reduced, so that the flexible arrangement of capacity is achieved, and the convenience of use is improved.

Description

Chip fluid tank and fluid circuit control method for machine tools Technical Field

[0001] The invention relates to a chip fluid box and a fluid circuit control method for a machine tool, belonging to the technical field of numerically controlled machine tools. Background Art

[0002] During the mold processing process on CNC machine tools, cutting fluid is often required to cool and lubricate the workpiece and flush the cutting chips from the bed to ensure the precision of the workpiece's precision machining and the cleanliness of the CNC integrated circuit. Therefore, the liquid tank that stores cutting fluid has become an indispensable component for precision data processing. Among them, the above-mentioned liquid tank used to store cutting fluid in machine tools is also habitually called an oil tank. Oil tanks are generally used to store liquids such as lubricating oil, cutting fluid, hydraulic oil, etc. that lubricate and cool the moving parts of machine tools. With the development of technology, the liquids used in modern machine tools are no longer limited to oil-based substances, but also include water-based liquids, etc. However, the term "oil tank" is still widely used. However, most existing machine tool oil tanks are laid flat under the CNC machine tool, occupying a large area but with a small capacity. Their capacity design is greatly limited by the machine tool structure and the operating environment, making them very inconvenient to use and unable to meet the needs of efficient CNC machine tool processing.

[0003] Summary of the Invention

[0004] The present invention provides a chip fluid tank and fluid circuit control method for a machine tool, aiming to address at least one of the technical problems existing in the prior art. To this end, the present invention proposes a chip fluid tank and fluid circuit control method for a machine tool. By optimizing the structural design and fluid circuit control, the method reduces the required floor space while enabling flexible capacity settings and improving ease of use.

[0005] On the one hand, the technical solution of the present invention relates to a cutting fluid tank for a machine tool, comprising: a first tank body, the first tank body is provided with a reflux port for recovering the cutting fluid after processing and a first liquid level switch for monitoring the change of the liquid level in the tank; a second tank body, the bottom surface of the second tank body is connected to the top surface of the first tank body; a third tank body, the bottom surface of the third tank body is connected to the top surface of the second tank body, the third tank body is provided with a liquid supply port for providing cutting fluid for processing and a second liquid level switch for monitoring the change of the liquid level in the tank; wherein, the first tank body is connected to the third tank body through a first pipe, and the first pump body enables the first tank body to provide cutting fluid to the third tank body; the second tank body is connected to the first tank body through a second pipe, and the second tank body is enabled to replenish cutting fluid to the first tank body through an electric valve; wherein, the third tank body provides cutting fluid for processing to the CNC machine tool through the third pipe and the second pump body.

[0006] Furthermore, a temperature sensor for detecting the temperature of the cutting fluid is provided in the third box.

[0007] Furthermore, the third box body is provided with a first channel so that when the third box body is in an overflowing state, the cutting fluid of the third box body flows to the second box body; the second box body is provided with a second channel so that when the second box body is in an overflowing state, the cutting fluid of the second box body flows to the first box body.

[0008] Furthermore, the second box body is provided with a first liquid inlet, and the third box body is provided with a first liquid outlet, a first side plate and a first external connecting piece. The first liquid outlet is provided on the first side plate, and the first side plate and the first external connecting piece are combined to form the first channel. The inlet of the first channel is connected to the first liquid outlet, and the outlet of the first channel is connected to the first liquid inlet.

[0009] Furthermore, the first box body is provided with a second liquid inlet, the second box body is provided with a second liquid outlet, a second side plate and a second external connecting piece, the second liquid outlet is provided on the second side plate, the second side plate and the second external connecting piece are combined to form the second channel, the inlet of the second channel is connected to the second liquid outlet, and the outlet of the second channel is connected to the second liquid inlet.

[0010] Furthermore, the first external connecting member and the second external connecting member each include an external plate and a first external connecting plate, a second external connecting plate, and a third external connecting plate connected in sequence; one side of the first external connecting plate, the second external connecting plate, and the third external connecting plate are respectively connected to three consecutive side edges of the external plate, the other sides of the first external connecting plate, the second external connecting plate, and the third external connecting plate of the first external connecting member are all connected to the first side plate, and the other sides of the first external connecting plate, the second external connecting plate, and the third external connecting plate of the second external connecting member are all connected to the second side plate.

[0011] Furthermore, the invention further comprises multiple connecting assemblies, each comprising a connecting plate and two connecting rails, with two connecting rails connected to each side of the connecting plate; one connecting rail is connected to the second housing, and the other is connected to the first housing or the third housing. The chip fluid tank for a machine tool according to claim 1 is characterized in that the connecting rails are integrally connected to the first housing, the second housing, or the third housing.

[0012] Furthermore, the first box body is provided with a plurality of water receiving plates, one side of each of the plurality of water receiving plates is connected to the inner wall of the return port, and the other side of each of the plurality of water receiving plates is surrounded to form a water receiving port.

[0013] Furthermore, both ends of the third pipeline are connected to the third box and the CNC machine tool respectively, and the second pump body is arranged at the connection between the third pipeline and the third box.

[0014] Furthermore, the lower end of the first pipe is connected to the upper side of the first box, and the upper end of the first pipe is connected to the upper side of the third box.

[0015] Furthermore, one end of the second pipe is connected to the side surface of the second box body, and the other end of the second pipe is connected to the top surface of the first box body.

[0016] Furthermore, the first pump body is arranged at the connection between the first pipeline and the first box body.

[0017] Furthermore, the length of the third box is smaller than the length of the second box.

[0018] Furthermore, the inner wall of the reflux port is connected to a filter screen.

[0019] Furthermore, both the third box body and the second box body may be provided with handles.

[0020] Furthermore, a push handle is provided on the first box body or the second box body.

[0021] Another aspect of the technical solution of the present invention relates to a fluid circuit control method, which is applied to the chip fluid tank for a machine tool in the above embodiment. The method according to the present invention comprises the following steps:

[0022] S100, using the second pump body to enable the third box to supply cutting fluid to the CNC machine tool; using the first pump body to enable the cutting fluid in the first box to flow to the third box;

[0023] S200, when a low liquid level signal fed back by the first liquid level switch is received, causing the second tank to replenish cutting fluid to the first tank through the electric valve, until a high liquid level signal fed back by the first liquid level switch is received, and the electric valve is closed;

[0024] S300: When low liquid level signals fed back by the first liquid level switch and the second liquid level switch are received simultaneously, a cutting fluid adding signal is output;

[0025] S400: When a low liquid level signal fed back by the second liquid level switch is received but a low liquid level signal fed back by the first liquid level switch is not received at the same time, a fault alarm signal is output.

[0026] Furthermore, the step S100 further includes the following steps: when the temperature sensor in the third box feeds back a temperature alarm signal, reducing the speed of the cutting fluid flowing to the third box through the second pump body, and opening the solenoid valve at the same time.

[0027] Furthermore, the first pump body and the second pump body are of the same model and are configured to operate synchronously.

[0028] The beneficial effects of the present invention are as follows.

[0029] The cutting fluid tank and fluid circuit control method for machine tools of the present invention can reduce the floor space by optimizing the structural design and fluid circuit control, while achieving flexible capacity setting and improving ease of use. The second box body is arranged on the upper side of the first box body, and the third box body is arranged on the upper side of the second box body. The three boxes are stacked in the vertical height direction, so that the capacity of the cutting fluid tank can be expanded by extending it in the height space direction, thereby resolving the contradiction between the capacity of the cutting fluid tank and the floor space. And by adopting a modular design, the capacity of the cutting fluid tank can be flexibly set under certain floor space conditions by changing the capacity of the second box body. By setting the first channel and the second channel, the cutting fluid volume of the three boxes can be self-regulated, and the capacity of each box can be fully utilized. By cooperating with the first liquid level switch and the second liquid level switch, the online automatic adjustment of the cutting fluid volume of the box body, the timely replenishment of the cutting fluid volume of the box body and the timely feedback of the fault conditions can be achieved, thereby ensuring the stability of the liquid supply to the CNC machine tool. On the premise of having a second tank for storing and replenishing cutting fluid, the temperature of the cutting fluid flowing into the fluid inlet of the CNC machine tool is controlled through the cooperation of the second pump body, the electric valve and the temperature sensor, which is beneficial to ensure the cooling effect of the cutting fluid during the CNC machining process and improve the machining accuracy and machining effect of the CNC machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a first structural schematic diagram of a chip fluid tank for a machine tool according to an embodiment of the present invention.

[0031] FIG2 is a second structural schematic diagram of a chip fluid tank for a machine tool according to an embodiment of the present invention.

[0032] FIG3 is a partial structural exploded view of a chip fluid tank for a machine tool according to an embodiment of the present invention.

[0033] FIG4 is a schematic cross-sectional view of the structure of a chip fluid tank for a machine tool according to an embodiment of the present invention.

[0034] FIG5 is an enlarged structural diagram of the connection assembly at point A in FIG2 .

[0035] FIG6 is a basic flow chart of a fluid circuit control method according to an embodiment of the present invention.

[0036] Reference numerals:

[0037] 100 first tank; 110 reflux port; 120 first liquid level switch; 130 first pipeline; 140 first pump body; 150 second liquid inlet; 160 water receiving plate;

[0038] 200 second housing; 210 second pipeline; 220 electric valve; 230 second channel; 240 first liquid inlet; 250 second liquid outlet; 260 second side plate; 270 second external component;

[0039] 300 third box; 310 second liquid level switch; 320 first channel; 330 first liquid outlet; 340 first side plate; 350 first external connection member; 351 external plate; 352 first external connection plate; 353 second external connection plate; 354 ​​third external connection plate; 360 third pipeline; 370 second pump body;

[0040] 400 connecting assembly; 410 connecting plate; 420 connecting rail;

[0041] 500 wheels; 510 push handles; 520 carrying handles. DETAILED DESCRIPTION

[0042] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict.

[0043] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, terms such as "upper," "lower," "left," "right," "top," and "bottom" used in this disclosure are intended solely to describe the relative positions of the components of the disclosure as shown in the accompanying drawings.

[0044] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments and are not intended to limit the present invention. The term "and / or" as used herein includes any combination of one or more of the related listed items.

[0045] It should be understood that although the terms first, second, third, etc. may be used to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, without departing from the scope of the present disclosure, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element.

[0046] Referring to Figures 1 to 6, the chip fluid tank for machine tools according to the technical solution of the present invention includes a first tank body 100, a second tank body 200 and a third tank body 300. The first tank body 100 is provided with a reflux port 110 for recovering the cutting fluid after processing and a first liquid level switch 120 for monitoring the change of the liquid level in the tank. The bottom surface of the second tank body 200 is connected to the top surface of the first tank body 100, and the bottom surface of the third tank body 300 is connected to the top surface of the second tank body 200. The third tank body 300 is provided with an infusion port for providing cutting fluid for processing and a second liquid level switch 310 for monitoring the change of the liquid level in the tank. Among them, the first box body 100 is connected to the third box body 300 through the first pipe 130, and the first pump body 140 enables the first box body 100 to provide cutting fluid to the third box body 300, the second box body 200 is connected to the first box body 100 through the second pipe 210, and the electric valve 220 enables the second box body 200 to supplement the cutting fluid to the first box body 100.

[0047] In some specific implementations, the third box body 300 is provided with a first channel 320 so that when the third box body 300 is in an overflowing state, the cutting fluid in the third box body 300 flows to the second box body 200, and the second box body 200 is provided with a second channel 230 so that when the second box body 200 is in an overflowing state, the cutting fluid in the second box body 200 flows to the first box body 100.

[0048] Specifically, the cutting fluid discharged from the CNC machine tool after processing flows into the first box body 100 from the reflux port 110. Under the action of the first pump body 140, the cutting fluid in the first box body 100 flows into the third box body 300 through the first pipe 130. The cutting fluid in the third box body 300 flows into the CNC machine tool under the action of the second pump body 370, thereby realizing the recycling of the cutting fluid. When too much cutting fluid flows into the third box body 300 and causes the third box body 300 to overflow, the excess cutting fluid will flow into the second box body 200 through the first channel 320. When too much cutting fluid is stored in the second box body 200 and causes the second box body 200 to overflow, the excess cutting fluid will flow into the first box body 100 through the second channel 230, self-adjusting the liquid content of the three boxes. At the same time, when the cutting fluid in the first box body 100 is too little, the cutting fluid in the second box body 200 can also be made to flow to the first box body 100 through the electric valve 220, and the liquid level changes of the first box body 100 can be monitored by the first liquid level switch 120, and the liquid level changes of the third box body 300 can be monitored by the second liquid level switch 310, so as to replenish the liquid in the first box body 100 and the third box body 300 in time, so that the second box body 200 can not only store the cutting fluid, but also replenish the cutting fluid, thereby ensuring the stability of the cutting fluid supply of the CNC machine tool. The chip fluid tank for machine tools of the embodiment of the present invention realizes flexible setting of the cutting fluid capacity in the first tank body 100, the second tank body 200 and the third tank body 300, and adapts to the different changes in the drainage and supply requirements of CNC machine tools during diversified processing.

[0049] Furthermore, multiple pulleys can be provided at the bottom of the first housing 100 to facilitate the movement of the cutting fluid tank for the machine tool. Furthermore, a push handle can be provided on the first housing 100 or the second housing 200 to facilitate the movement of the cutting fluid tank. Furthermore, both sides of the third housing 300 and the second housing 200 can be provided with a lifting handle to facilitate the replacement and transportation of the third housing 300 and the second housing 200.

[0050] In the embodiment of the present invention, the cutting fluid tank for a machine tool has a second tank body 200 disposed on the upper side of the first tank body 100, and a third tank body disposed on the upper side of the second tank body 200. The three tanks are stacked in the vertical height direction, so that the capacity of the tank can be expanded by extending it in the height space direction, thereby resolving the contradiction between the tank capacity and the floor space. In addition, by adopting a modular design, the capacity of the cutting fluid tank can be flexibly set under certain floor space conditions by changing the capacity of the second tank body 200. The position of the reflux port 110 of the first tank body 100 can be flexibly set according to the drain port of the CNC machine tool, and the position of the liquid supply port of the third tank body 300 can also be flexibly set according to the structure of the CNC machine tool, so that the tank can be flexibly arranged on the side of the CNC machine tool, which is conducive to improving the flexibility of the spatial layout.

[0051] In some specific embodiments of the present invention, the first box body 100 is arranged at the bottom of the cutting fluid box, the length of the first box body 100 is greater than the length of the second box body 200, the second box body 200 is arranged on the top surface of one side of the first box body 100, and the top surface of the other side of the first box body 100 is provided with a return port 110, and the inner wall of the return port 110 is connected to a filter screen. Furthermore, the first box body 100 is provided with a plurality of water receiving plates 160, one side of each of the plurality of water receiving plates 160 is connected to the inner wall of the return port 110, and the other side of the plurality of water receiving plates 160 is surrounded to form a water receiving port. After the processed cutting fluid flows out from the drain port of the CNC machine tool, it flows to the return port 110 through the water receiving port, is filtered through the filter screen on the return port 110, and then enters the first box body 100.

[0052] In some specific embodiments of the present invention, the first pipe 130 is provided on the side of the cutting fluid tank, the lower end of the first pipe 130 is connected to the upper side of the first tank body 100, and the upper end of the first pipe 130 is connected to the upper side of the third tank body 300. The first pump body 140 is provided between the second tank body 200 and the water receiving plate 160. The first pump body 140 is provided at the connection between the first pipe 130 and the first tank body 100. The cutting fluid in the first tank body 100 flows to the third tank body 300 under the action of the first pump body 140. At the same time, by providing the second liquid level switch 310, it is helpful to ensure the amount of cutting fluid in the third tank body 300 and ensure the stability of the cutting fluid supply to the CNC machine tool. Furthermore, the third housing 300 is connected to the fluid inlet of the CNC machine tool via a third pipe 360. A second pump body 370 is provided on the top surface of the third housing 300. The second pump body 370 is disposed at the junction of the third housing 300 and the third pipe 360. The cutting fluid within the third housing 300 flows toward the CNC machine tool under the action of the second pump body 370. It should be noted that in some specific embodiments, the first pump body 140 and the second pump body 370 utilize the same pump model and are configured to operate synchronously. It is understood that the connection of the first pipe 130 to the upper side of the first housing 100 allows the cutting fluid entering the first housing 100 to settle before flowing back into the third housing 300.

[0053] In some specific embodiments of the present invention, the second pipe 210 is arranged between the second box body 200 and the connecting plate 410, one end of the second pipe 210 is connected to the side of the second box body 200, and the other end of the second pipe 210 is connected to the top surface of the first box body 100. The electric valve 220 is arranged on the second box body 200 and on the side of the second pipe 210, and the opening and closing of the second pipe 210 are controlled by the electric valve 220. At the same time, by providing the first liquid level switch 120, the opening and closing of the electric valve 220 is controlled according to the feedback signal of the first liquid level switch 120, so as to achieve timely replenishment of the cutting fluid of the first box body 100. It should be noted that the electric valve 220 in the embodiment of the present invention can adopt an electric two-way ball valve.

[0054] In some specific embodiments of the present invention, by providing a first channel 320, a first liquid outlet 330, and a first liquid inlet 240, when the third housing 300 is overflowing, the cutting fluid in the third housing 300 flows to the second housing 200, thereby achieving flexible setting of the liquid volume in each housing. Referring to FIG1 , the second housing 200 is provided with a first liquid inlet 240, and the third housing 300 is provided with a first liquid outlet 330, a first side plate 340, and a second external member 270. The first liquid outlet 330 is provided on the first side plate 340. The first side plate 340 and the second external member 270 are combined to form a first channel 320. The inlet of the first channel 320 is connected to the first liquid outlet 330, and the outlet of the first channel 320 is connected to the first liquid inlet 240. Specifically, the length of the third housing 300 is shorter than that of the second housing 200. The first liquid inlet 240 is disposed on the top surface of the second housing 200. When the second external connector 270 is not connected, the first liquid inlet 240 partially leaks outward. The first liquid inlet 240 is disposed below the first side plate 340, and the first liquid outlet 330 is disposed above the first side plate 340. After the second external connector 270 is connected to the third housing 300, a first channel 320 is formed between the first external connector 350 and the first side plate 340, covering the first liquid inlet 240 and the first liquid outlet 330. Therefore, when the cutting fluid in the third housing 300 overflows to the level of the first liquid inlet 240, the cutting fluid flows from the first liquid inlet 240 into the first channel 320 and finally into the second housing 200 through the first liquid outlet 330, thereby self-regulating the liquid volume between the third housing 300 and the second housing 200.

[0055] In some specific embodiments of the present invention, the first external component 350 includes an external plate 351 and a first external plate 352, a second external plate 353 and a third external plate 354 connected in sequence, one side of the first external plate 352, the second external plate 353 and the third external plate 354 are respectively connected to three consecutive side edges of the external plate 351, and the other sides of the first external plate 352, the second external plate 353 and the third external plate 354 are all connected to the first side plate 340, and the first side plate 340 is parallel to the external plate 351. Specifically, the top side of the first external plate 352 is connected to the rear side of the second external plate 353, the front side of the second external plate 353 is connected to the top side of the third external plate 354, the left sides of the first external plate 352, the second external plate 353, and the third external plate 354 are respectively connected to the rear side, top side, and front side of the right side of the external plate 351, and the right sides of the first external plate 352, the second external plate 353, and the third external plate 354 are respectively connected to the rear side, top side, and front side of the left side of the first side plate 340. The bottom side of the first side plate 340 is disposed at the first liquid inlet 240, and the bottom side of the external plate 351 is disposed at the first liquid inlet 240. The bottom sides of the first external plate 352 and the third external plate 354 are respectively connected to the rear side and front side of the first liquid inlet 240. The first liquid outlet 330 is arranged on the upper side of the first side plate 340 and below the second external plate 353. The upper side of the first liquid outlet 330 is connected to the lower side of the second external plate 353, and the rear side and front side of the first liquid outlet 330 are respectively connected to the upper side of the first external plate 352 and the third external plate 354.

[0056] In some specific embodiments of the present invention, by providing a second channel 230, a second liquid outlet 250, and a second liquid inlet 150, when the second box 200 is overflowing, the cutting fluid in the second box 200 flows to the first box 100, thereby achieving flexible setting of the liquid volume in each box. Referring to Figure 1, the first box 100 is provided with a second liquid inlet 150, and the second box 200 is provided with a second liquid outlet 250, a first side plate 340, and a second external member 270. The second liquid outlet 250 is provided on the first side plate 340. The first side plate 340 and the second external member 270 are combined to form a second channel 230. The inlet of the second channel 230 is connected to the second liquid outlet 250, and the outlet of the second channel 230 is connected to the second liquid inlet 150. Specifically, the length of the second housing 200 is shorter than that of the first housing 100. The second liquid inlet 150 is disposed on the top surface of the first housing 100. When the second external connector 270 is not connected, the second liquid inlet 150 partially leaks outward. The second liquid inlet 150 is disposed below the first side plate 340, and the second liquid outlet 250 is disposed above the first side plate 340. After the second external connector 270 is connected to the second housing 200, a second channel 230 is formed between the first external connector 350 and the first side plate 340, covering the second liquid inlet 150 and the second liquid outlet 250. Therefore, when the cutting fluid in the second housing 200 overflows to the height of the second liquid inlet 150, the cutting fluid flows from the second liquid inlet 150 into the second channel 230 and finally into the first housing 100 through the second liquid outlet 250, thereby self-regulating the liquid volume in the second housing 200 and the first housing 100.

[0057] In some specific embodiments of the present invention, the first external component 350 includes an external plate 351 and a first external plate 352, a second external plate 353 and a third external plate 354 connected in sequence, one side of the first external plate 352, the second external plate 353 and the third external plate 354 are respectively connected to three consecutive side edges of the external plate 351, and the other sides of the first external plate 352, the second external plate 353 and the third external plate 354 are all connected to the first side plate 340, and the first side plate 340 is parallel to the external plate 351. Specifically, the top side of the first external plate 352 is connected to the rear side of the second external plate 353, the front side of the second external plate 353 is connected to the top side of the third external plate 354, the left sides of the first external plate 352, the second external plate 353, and the third external plate 354 are respectively connected to the rear side, top side, and front side of the right side of the external plate 351, and the right sides of the first external plate 352, the second external plate 353, and the third external plate 354 are respectively connected to the rear side, top side, and front side of the left side of the first side plate 340. The lower side of the first side plate 340 is provided at the second liquid inlet 150, and the lower side of the external plate 351 is provided at the second liquid inlet 150. The lower sides of the first external plate 352 and the third external plate 354 are respectively connected to the rear side and front side of the second liquid inlet 150. The second liquid outlet 250 is arranged on the upper side of the first side plate 340 and below the second external plate 353. The upper side of the second liquid outlet 250 is connected to the lower side of the second external plate 353, and the rear side and front side of the second liquid outlet 250 are respectively connected to the upper side of the first external plate 352 and the third external plate 354.

[0058] In some specific embodiments of the present invention, a chip fluid tank for a machine tool according to an embodiment of the present invention is provided with a plurality of connection assemblies 400, the connection assemblies 400 including a connection plate 410 and two connection rails 420, the two sides of the connection plate 410 being connected to the two connection rails 420, one of which being connected to the second box body 200, and the other being connected to the first box body 100 or the third box body 300. Referring to FIG1 , the connection rails 420 are U-shaped structures, consisting of two side panels (not shown) and a bottom panel (not shown). One side of the two side panels is connected to the opposite sides of the bottom panel, and the two side panels are connected to two adjacent boxes respectively. The connection plates 410 are connected to the bottom panels on the two boxes respectively to achieve the connection between the two boxes. Furthermore, the connecting plate 410 is connected to the base plate by screws and nuts, thereby realizing a detachable connection between the connecting plate 410 and the base plate, which is convenient for replacing the second box body 200 of different volumes according to the cutting fluid processing requirements, and is also conducive to ensuring a stable connection between the two boxes, thereby reducing the restriction on the box height. Under the condition of a certain floor area, the overall capacity of the chip fluid tank for the machine tool can be increased by setting a box body with a higher height.

[0059] In some specific embodiments of the present invention, the third housing 300 and the second housing 200 are connected via two sets of connecting assemblies 400, which are disposed on opposite sides of the third housing 300. The same set of connecting assemblies 400 is disposed on the outside of the same side of the third housing 300 and the second housing 200, wherein one connecting rail 420 is connected to the bottom side of the third housing 300 and to the top side of the connecting plate 410, and the other connecting rail 420 is connected to the top side of the second housing 200 and to the bottom side of the connecting plate 410. It will be appreciated that the integration of one connecting rail 420 with the third housing 300 and the integration of the other connecting rail 420 with the second housing 200 facilitates the secure connection between the two housings and facilitates disassembly and installation.

[0060] In some specific embodiments of the present invention, the second housing 200 and the first housing 100 are connected via two sets of connecting assemblies 400, which are disposed on opposite sides of the second housing 200. The same set of connecting assemblies 400 is disposed on the outside of the same side of the second housing 200 and the first housing 100, wherein one connecting rail 420 is connected to the bottom side of the second housing 200 and the top side of the connecting plate 410, and the other connecting rail 420 is connected to the top side of the first housing 100 and the bottom side of the connecting plate 410. It will be appreciated that one connecting rail 420 is integrally connected to the second housing 200 and the other connecting rail 420 is integrally connected to the first housing 100, which facilitates enhanced connection stability between the two housings and facilitates disassembly and installation.

[0061] 1 to 6 , the fluid circuit control method of the technical solution of the present invention is applied to a chip fluid tank for a machine tool according to an embodiment of the present invention, and the method includes at least the following steps:

[0062] S100: The third tank 300 supplies cutting fluid to the CNC machine tool through the second pump 370, and the cutting fluid in the first tank 100 flows to the third tank 300 through the first pump 140. Specifically, the first tank 100 receives the cutting fluid that flows back from the CNC machine tool after machining. After being filtered and precipitated by the first tank 100, the cutting fluid enters the third tank 300 through the first pump 140, and then enters the CNC machine tool through the second pump 370 for cooling, lubricating, and cleaning during CNC machining, thereby realizing the recycling of the cutting fluid.

[0063] S200: When a low liquid level signal is fed back from the first liquid level switch 120, the second tank 200 replenishes cutting fluid into the first tank 100 through the electric valve 220 until a high liquid level signal is fed back from the first liquid level switch 120, at which point the electric valve 220 is closed. Specifically, during CNC machining, cutting fluid loss may occur, causing the amount of cutting fluid entering the CNC machine tool to exceed the amount of cutting fluid flowing back, resulting in a low cutting fluid level in the first tank 100. Timely detection and feedback from the first liquid level switch 120, along with timely replenishment through the second tank 200, helps ensure a stable supply of cutting fluid during CNC machining.

[0064] S300: When low liquid level signals are received simultaneously from the first liquid level switch 120 and the second liquid level switch 310, a cutting fluid refill signal is output. Specifically, when the cutting fluid loss reaches a certain level, it will cause both the first tank 100 and the third tank 300 to experience insufficient cutting fluid. Timely detection and feedback from the first liquid level switch 120 and the second liquid level switch 310 facilitate timely replenishment of the cutting fluid in the tanks.

[0065] S400: When a low liquid level signal is received from the second liquid level switch 310 but a low liquid level signal is not received from the first liquid level switch 120, a fault alarm signal is output. Specifically, when the cutting fluid in the first tank 100 is sufficient but the cutting fluid in the third tank 300 is insufficient, the first liquid level switch 120 and the second liquid level switch 310 can cooperate to provide timely feedback, thereby facilitating the timely correction of faults such as damage to the first pump body 140 or blockage of the first pipeline 130.

[0066] The chip fluid tank for machine tools in the embodiment of the present invention not only realizes self-regulation of the cutting fluid amount in the three tanks by setting the first channel 320 and the second channel 230, making full use of the capacity of each tank, but also realizes online automatic adjustment of the cutting fluid amount in the tank through the cooperation of the first liquid level switch 120 and the second liquid level switch 310, as well as timely replenishment of the cutting fluid amount in the tank and timely feedback of fault conditions, thereby ensuring the stability of the liquid supply to the CNC machine tool.

[0067] In some specific embodiments of the present invention, a temperature sensor for detecting the temperature of the cutting fluid is provided in the third housing 300. When the temperature sensor in the third housing 300 detects that the cutting fluid temperature is too high and feeds back a temperature alarm signal, the second pump body 370 reduces the speed at which the cutting fluid flows into the third housing 300, thereby reducing the impact of the higher-temperature cutting fluid in the first housing 100 on the temperature of the cutting fluid in the third housing 300. Simultaneously, the solenoid valve is opened to inject the lower-temperature cutting fluid in the second housing 200 into the first housing 100, thereby lowering the temperature of the cutting fluid in the first housing 100 and, consequently, the temperature of the cutting fluid flowing into the fluid inlet of the CNC machine tool. This helps ensure the cooling effect of the cutting fluid during CNC machining, thereby improving the machining accuracy and machining effect of the CNC machine tool.

[0068] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the aforementioned embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure. Within the scope of protection of the present invention, its technical solutions and / or implementation methods may be modified and varied in various ways.

Claims

1. A chip liquid tank for a machine tool, characterized in that: include: A first box (100), wherein the first box (100) is provided with a reflux port (110) for recovering cutting fluid after processing and a first liquid level switch (120) for monitoring changes in liquid level in the box; A second box body (200), the bottom surface of the second box body (200) being connected to the top surface of the first box body (100); A third box (300), the bottom surface of the third box (300) being connected to the top surface of the second box (200), the third box (300) being provided with a liquid supply port for providing cutting fluid for machining and a second liquid level switch (310) for monitoring changes in the liquid level in the box; The first box (100) is connected to the third box (300) through a first pipe (130), and the first pump (140) enables the first box (100) to provide cutting fluid to the third box (300); the second box (200) is connected to the first box (100) through a second pipe (210), and the electric valve (220) enables the second box (200) to supplement the first box (100) with cutting fluid; The third box (300) cooperates with the third pipe (360) and the second pump body (370) to provide cutting fluid for machining to the numerical control machine tool.

2. The chip liquid tank for a machine tool according to claim 1, characterized in that: The third box (300) is provided with a temperature sensor for detecting the temperature of the cutting fluid.

3. The chip liquid tank for a machine tool according to claim 1, characterized in that: The third box (300) is provided with a first channel (320) so that when the third box (300) is in an overflowing state, the cutting fluid in the third box (300) flows to the second box (200); the second box (200) is provided with a second channel (230) so that when the second box (200) is in an overflowing state, the cutting fluid in the second box (200) flows to the first box (100).

4. The chip liquid tank for a machine tool according to claim 3, characterized in that: The second housing (200) is provided with a first liquid inlet (240), and the third housing (300) is provided with a first liquid outlet (330), a first side plate (340) and a first external connection component (350). The first liquid outlet (330) is provided on the first side plate (340). The first side plate (340) and the first external connection component (350) are combined to form the first channel (320). The inlet of the first channel (320) is communicated with the first liquid outlet (330), and the outlet of the first channel (320) is communicated with the first liquid inlet (240).

5. The chip liquid tank for a machine tool according to claim 4, characterized in that: The first housing (100) is provided with a second liquid inlet (150), and the second housing (200) is provided with a second liquid outlet (250), a second side plate (260) and a second external component (270); the second liquid outlet (250) is provided on the second side plate (260); the second side plate (260) and the second external component (270) are combined to form the second channel (230); the inlet of the second channel (230) is communicated with the second liquid outlet (250), and the outlet of the second channel (230) is communicated with the second liquid inlet (150).

6. The chip liquid tank for a machine tool according to claim 5, characterized in that: The first external component (350) and the second external component (270) both include an external plate (351) and a first external plate (352), a second external plate (353) and a third external plate (354) connected in sequence; one side of the first external plate (352), the second external plate (353) and the third external plate (354) are respectively connected to three consecutive side edges of the external plate (351), the other sides of the first external plate (352), the second external plate (353) and the third external plate (354) of the first external component (350) are connected to the first side plate (340), and the other sides of the first external plate (352), the second external plate (353) and the third external plate (354) of the second external component (270) are connected to the second side plate (260).

7. [Corrected 28.10.2024 in accordance with Rule 91] A chip liquid tank for a machine tool according to claim 1, characterized in that: It also includes a plurality of connection components (400), wherein the connection components (400) include a connection plate (410) and two connection rails (420), and the two sides of the connection plate (410) are respectively connected to the two connection rails (420); one of the connection rails (420) is connected to the second box (200), and the other connection rail (420) is connected to the first box (100) or the third box (300).

8. [Corrected 28.10.2024 in accordance with Rule 91] A chip liquid tank for a machine tool according to claim 7, characterized in that: The connecting track (420) is integrally connected to the first box (100), the second box (200) or the third box (300).

9. The chip fluid tank for a machine tool according to claim 1, characterized in that: The first box body (100) is provided with a plurality of water receiving plates (160), one side of each of the plurality of water receiving plates (160) is connected to the inner wall of the return port (110), and the other side of each of the plurality of water receiving plates (160) is surrounded to form a water receiving port.

10. The chip fluid tank for a machine tool according to claim 1, characterized in that: Both ends of the third pipeline (360) are respectively connected to the third box (300) and the CNC machine tool, and the second pump body (370) is arranged at the connection between the third pipeline (360) and the third box (300).

11. The chip fluid tank for a machine tool according to claim 1, characterized in that: The lower end of the first pipe (130) is connected to the upper side of the first box (100), and the upper end of the first pipe (130) is connected to the upper side of the third box (300).

12. According to the chip fluid box for machine tools as described in claim 1, one end of the second pipe (210) is connected to the side of the second box body (200), and the other end of the second pipe (210) is connected to the top surface of the first box body (100).

13. The chip fluid tank for a machine tool according to claim 1, characterized in that: The first pump body (140) is arranged at the connection between the first pipeline (130) and the first box body (100).

14. The chip fluid tank for a machine tool according to claim 1, characterized in that: The length of the third box (300) is smaller than the length of the second box (200).

15. The chip fluid tank for a machine tool according to claim 1, characterized in that: The inner wall of the reflux port (110) is connected to a filter screen.

16. The chip fluid tank for a machine tool according to claim 1, characterized in that: The third box (300) and the second box (200) may both be provided with handles.

17. The chip fluid tank for a machine tool according to claim 1, characterized in that: A push handle is provided on the first box body (100) or the second box body (200).

18. A fluid circuit control method, applied to a chip fluid tank for a machine tool according to any one of claims 1 to 17, the method comprising the following steps: S100, using the second pump body (370) to enable the third box (300) to provide cutting fluid for machining to the CNC machine tool; using the first pump body (140) to enable the cutting fluid in the first box (100) to flow to the third box (300); S200, when a low liquid level signal fed back by the first liquid level switch (120) is received, the second box (200) is caused to replenish cutting fluid to the first box (100) through the electric valve (220), until a high liquid level signal fed back by the first liquid level switch (120) is received, and the electric valve (220) is closed; S300, when low liquid level signals fed back by the first liquid level switch (120) and the second liquid level switch (310) are received simultaneously, outputting a cutting fluid adding signal; S400: When a low liquid level signal fed back by the second liquid level switch (310) is received but a low liquid level signal fed back by the first liquid level switch (120) is not received at the same time, a fault alarm signal is output.

19. The liquid circuit control method according to claim 18, characterized in that: The step S100 also includes the following steps: when the temperature sensor in the third box (300) feeds back a temperature alarm signal, the speed at which the cutting fluid flows toward the third box (300) is reduced through the second pump body (370), and the electric valve (220) is opened at the same time.

20. The liquid circuit control method according to claim 18, characterized in that: The first pump body (140) and the second pump body (370) are of the same model and are configured to operate synchronously.

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