Integrated CNC special vacuum negative pressure automatic drainage device

Abstract

The application relates to the technical field of CNC equipment accessories, in particular to an integrated CNC special vacuum negative pressure automatic drainage device.The application provides an integrated CNC special vacuum negative pressure automatic drainage device, which solves the technical problem that the vacuum system of a CNC cannot automatically drain cutting fluid.A kind of integrated CNC special vacuum negative pressure automatic drainage device, including water storage tank, buffer tank and vacuum tank, by setting buffer tank, buffer tank is used for storing cutting fluid in vacuum pipeline, in the cutting fluid receiving state, vacuum tank and buffer tank form a whole, the negative pressure value in vacuum tank and buffer tank is same, the cutting fluid in vacuum pipeline enters the buffer tank and stores when entering the vacuum tank, when the buffer tank needs to drain cutting fluid, the vacuum tank is disconnected with the buffer tank through the buffer valve, the cutting fluid in the buffer tank can be drained, and the vacuum tank still maintains the corresponding vacuum value during the drainage process, automatic drainage can be realized while non-stop drainage is realized.

Description

Technical Field

[0001] This invention relates to the field of CNC equipment accessories technology, and in particular to an integrated CNC-specific vacuum negative pressure automatic drainage device. Background Technology

[0002] CNC is the abbreviation for Computer Numerical Control Machine Tool, which is an automated machine tool equipped with a program control system. This control system logically processes programs with control codes or other symbolic instructions, decodes them, represents them with coded numbers, and inputs them into the CNC device via an information carrier. After processing, the CNC device sends various control signals to control the machine tool's movements, automatically machining parts according to the shape and dimensions required by the drawings.

[0003] Currently, most CNC machining processes utilize cutting fluid for cooling and lubricating cutting tools. The workpiece is typically held in place using vacuum suction. While this method offers advantages such as ease of operation, speed, and high safety, it suffers from a common drawback: achieving a complete seal between the workpiece and the fixture is difficult. This results in cutting fluid being drawn into the fixture and then into the vacuum system during machining. Consequently, the cutting fluid needs frequent replenishment, and even slight negligence can lead to excessive fluid loss, causing the tool to fail to cool properly, resulting in tool breakage, machine downtime, and other accidents.

[0004] Therefore, the vacuum system of current CNC technology has a technical problem of not being able to automatically discharge cutting fluid. Summary of the Invention

[0005] The present invention provides an integrated CNC-specific vacuum negative pressure automatic drainage device, which solves the technical problem that the vacuum system of CNC cannot automatically drain cutting fluid in the present technology.

[0006] Some implementation schemes for solving the above-mentioned technical problems include: An integrated CNC-specific vacuum negative pressure automatic drainage device includes a water storage tank, a buffer tank, and a vacuum tank. One end of the vacuum tank is connected to the vacuum pipeline of the CNC machine, and the other end of the vacuum tank is connected to the buffer tank. The buffer tank is connected to the water storage tank. The vacuum chamber is connected to a negative pressure maintainer that maintains negative pressure inside the vacuum chamber; The integrated CNC-specific vacuum negative pressure automatic drainage device also includes a vacuum generator for evacuating the buffer box and an air pump for supplying airflow into the buffer box. A buffer valve is provided between the vacuum chamber and the buffer chamber to control the connection or disconnection between the vacuum chamber and the buffer chamber; a vacuum valve is provided between the vacuum generator and the buffer chamber to control the connection or disconnection between the vacuum generator and the buffer chamber; an air pump is provided between the air pump and the buffer chamber to control the connection or disconnection between the air pump and the buffer chamber; and a drain valve is provided between the buffer chamber and the water storage tank to control the connection or disconnection between the buffer chamber and the water storage tank. This integrated CNC-specific vacuum negative pressure automatic drainage device includes cutting fluid receiving state, drainage state, and switching state. In the cutting fluid receiving state: the buffer valve is open, the drain valve, the vacuum valve, and the air filling valve are all closed, the cutting fluid in the vacuum pipeline enters the buffer tank through the vacuum box, and the negative pressure protector maintains the negative pressure in the vacuum box; In the drainage state: the buffer valve is closed, the drain valve and the air filling valve are open, the vacuum valve is closed, and the air pump supplies gas into the buffer tank through the air filling valve, so that the cutting fluid in the buffer tank is discharged into the water storage tank; In the switching state: the buffer valve, the inflation valve, and the drain valve are all closed, the vacuum valve is open, and the vacuum generator evacuates the buffer box until the negative pressure value inside the buffer box is equal to the negative pressure value inside the vacuum box. Then, the buffer valve opens and the vacuum valve closes.

[0007] Preferably, CNC includes a cutting state when the tool is machining the workpiece and a tool changing state when the tool is changed, wherein the switching state is completed in the tool changing state.

[0008] Preferably, the integrated CNC-specific vacuum negative pressure automatic drainage device also includes a controller and a first sensor for detecting the vacuum state inside the vacuum chamber and a second sensor for detecting the vacuum state inside the buffer chamber. The buffer valve, the drain valve, the inflation valve, and the vacuum valve are all solenoid valves. The negative pressure maintainer, the vacuum generator, the air pump, and the buffer valve, drain valve, inflation valve, and vacuum valve are all controlled by the controller.

[0009] Preferably, the vacuum chamber is located above the buffer chamber, and the cutting fluid in the vacuum chamber flows into the buffer chamber under the action of gravity.

[0010] Preferably, both the vacuum generator and the air pump are fixed to the water storage tank.

[0011] Preferably, the water storage tank is provided with a bracket, the bracket is provided with feet that contact the ground, the feet are fixed to the bracket by threads, the vacuum generator is fixed to the bracket by screws, and the air pump is fixed to the bracket by screws.

[0012] Preferably, the vacuum generator is connected to the buffer box via a vacuum pipe, and the vacuum valve is connected in series with the vacuum pipe.

[0013] Preferably, the air pump is connected to the buffer tank via an inflation pipe, and the inflation valve is connected in series with the inflation pipe.

[0014] Preferably, both the inflation tube and the vacuum tube are connected to the upper end of the buffer box.

[0015] Preferably, the vacuum chamber and the buffer chamber are connected by a connecting pipe, and the buffer valve is connected in series with the connecting pipe.

[0016] Compared with the prior art, the present invention has the following advantages: By setting up a buffer tank, which is used to store the cutting fluid in the vacuum pipeline, the vacuum tank and the buffer tank form a whole when the cutting fluid is receiving. At this time, the negative pressure values ​​in the vacuum tank and the buffer tank are the same. The cutting fluid that enters the vacuum tank from the vacuum pipeline enters the buffer tank for storage. When the buffer tank needs to drain the cutting fluid, the vacuum tank and the buffer tank are disconnected through the buffer valve. At this time, the cutting fluid in the buffer tank can be drained. In addition, the vacuum tank maintains the corresponding vacuum value during the drainage process, so as to achieve automatic drainage and drainage without stopping the machine.

[0017] By installing an air pump, which supplies airflow into the buffer tank during drainage, the cutting fluid inside the buffer tank can be discharged quickly, thus improving the drainage efficiency of the buffer tank.

[0018] By setting up a vacuum generator, which is used to evacuate the buffer tank after drainage, the vacuum value of the buffer tank after drainage is equal to the vacuum value inside the vacuum tank. Then, the buffer valve is opened, and the buffer tank can normally buffer the cutting fluid in the vacuum tank. Attached Figure Description

[0019] For illustrative purposes, several embodiments of the invention are illustrated in the following figures. These figures are incorporated herein by reference and form part of the detailed description. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring the concept of the subject matter of the invention.

[0020] Figure 1 This is a schematic diagram of the present invention.

[0021] Figure 2This is a schematic diagram of the internal structure of the water storage tank, buffer tank, and vacuum tank.

[0022] Figure 3 This is a schematic diagram showing the relative positions of the water storage tank, buffer tank, and vacuum tank.

[0023] Figure 4 This is a flowchart of the process of the present invention.

[0024] As shown in the figure: 1. Water storage tank; 2. Buffer tank; 3. Vacuum tank; 4. Vacuum pipeline; 5. Negative pressure retainer; 6. Vacuum generator; 7. Air pump; 8. Buffer valve; 9. Vacuum valve; 10. Air filling valve; 11. Drain valve. Detailed Implementation

[0025] The specific embodiments shown below are intended to describe various configurations of the subject matter of the invention and are not intended to represent the only configuration in which the subject matter of the invention can be practiced. The specific embodiments include particular details intended to provide a thorough understanding of the subject matter of the invention. However, it will be clear and apparent to those skilled in the art that the subject matter of the invention is not limited to the specific details shown herein and can be practiced without these specific details.

[0026] Understandably, in this document, relational terms such as “first” and “second” are intended to distinguish one entity or operation from another, and are not intended to expressly or imply any actual relationship or order between these entities or operations.

[0027] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Reference Figures 1 to 4 As shown, an integrated CNC-specific vacuum negative pressure automatic drainage device includes a water storage tank 1, a buffer tank 2, and a vacuum tank 3. One end of the vacuum tank 3 is connected to the vacuum pipe 4 of the CNC, and the other end of the vacuum tank 3 is connected to the buffer tank 2. The buffer tank 2 is connected to the water storage tank 1. The vacuum chamber 3 is connected to a negative pressure maintainer 5 that maintains negative pressure inside the vacuum chamber 3; The integrated CNC-specific vacuum negative pressure automatic drainage device also includes a vacuum generator 6 for evacuating the buffer tank 2 and an air pump 7 for supplying airflow into the buffer tank 2. A buffer valve 8 is provided between the vacuum chamber 3 and the buffer chamber 2 to control the connection or disconnection between the vacuum chamber 3 and the buffer chamber 2; a vacuum valve 9 is provided between the vacuum generator 6 and the buffer chamber 2 to control the connection or disconnection between the vacuum generator 6 and the buffer chamber 2; an air pump 7 is provided between the air pump 7 and the buffer chamber 2 to control the connection or disconnection between the air pump 7 and the buffer chamber 2; and a drain valve 11 is provided between the buffer chamber 2 and the water storage tank 1 to control the connection or disconnection between the buffer chamber 2 and the water storage tank 1. This integrated CNC-specific vacuum negative pressure automatic drainage device includes cutting fluid receiving state, drainage state, and switching state. In the cutting fluid receiving state: the buffer valve 8 is open, the drain valve 11, the vacuum valve 9, and the air filling valve 10 are all closed, the cutting fluid in the vacuum pipe 4 enters the buffer tank 2 through the vacuum tank 3, and the negative pressure protector maintains the negative pressure in the vacuum tank 3; In the drainage state: the buffer valve 8 is closed, the drain valve 11 and the air filling valve 10 are open, the vacuum valve 9 is closed, and the air pump 7 supplies gas into the buffer tank 2 through the air filling valve 10, so that the cutting fluid in the buffer tank 2 is discharged into the water storage tank 1; In the switching state: the buffer valve 8, the inflation valve 10, and the drain valve 11 are all closed, the vacuum valve 9 is open, and the vacuum generator 6 evacuates the buffer box 2 until the negative pressure value in the buffer box 2 is equal to the negative pressure value in the vacuum box 3, at which point the buffer valve 8 opens and the vacuum valve 9 closes.

[0029] In some embodiments, CNC includes a cutting state when a tool is machining a workpiece and a tool changing state when the tool is being changed, wherein the switching state is completed in the tool changing state.

[0030] Switching states requires connecting vacuum chamber 3 to buffer chamber 2, which means opening buffer valve 8. Although buffer chamber 2 has been evacuated before buffer valve 8 is opened, the vacuum value inside vacuum chamber 3 may still fluctuate during the opening process. Completing all actions for switching states before the tool change process is finished can prevent the fluctuation of the vacuum value inside vacuum chamber 3 from affecting the machining performance of CNC.

[0031] Reference Figures 1 to 4As shown, in some embodiments, the integrated CNC-specific vacuum negative pressure automatic drainage device further includes a controller and a first sensor for detecting the vacuum state inside the vacuum chamber 3 and a second sensor for detecting the vacuum state inside the buffer chamber 2. The buffer valve 8, the drain valve 11, the inflation valve 10, and the vacuum valve 9 are all solenoid valves. The negative pressure retainer 5, the vacuum generator 6, the air pump 7, and the buffer valve 8, drain valve 11, inflation valve 10, and vacuum valve 9 are all controlled by the controller.

[0032] The controller can be integrated into the CNC control system, or it can communicate with the CNC control system and be centrally controlled by the CNC control system through the controller.

[0033] In some embodiments, the vacuum chamber 3 is located above the buffer chamber 2, and the cutting fluid in the vacuum chamber 3 flows into the buffer chamber 2 under the action of gravity.

[0034] In some embodiments, both the vacuum generator 6 and the air pump 7 are fixed to the water storage tank 1.

[0035] In some embodiments, the water storage tank 1 is provided with a bracket, the bracket is provided with a foot that contacts the ground, the foot is fixed to the bracket by threads, the vacuum generator 6 is fixed to the bracket by screws, and the air pump 7 is fixed to the bracket by screws.

[0036] The legs are fixed to the bracket by threads, and the height of the legs relative to the bracket can be adjusted, thereby adjusting the bracket to a horizontal position or a desired position.

[0037] In some embodiments, the vacuum generator 6 is connected to the buffer tank 2 via a vacuum pipe, and the vacuum valve 9 is connected in series with the vacuum pipe.

[0038] In some embodiments, the air pump 7 is connected to the buffer tank 2 via an inflation pipe, and the inflation valve 10 is connected in series with the inflation pipe.

[0039] In some embodiments, both the inflation tube and the vacuum tube are connected to the upper end of the buffer box 2.

[0040] In some embodiments, the vacuum chamber 3 and the buffer chamber 2 are connected by a connecting pipe, and the buffer valve 8 is connected in series with the connecting pipe.

[0041] The technical solution of the present invention will be further described below through actual working process: Reference Figures 1 to 4 As shown, during the CNC cutting process, the negative pressure holder 5 always maintains the negative pressure value in the vacuum box 3. The negative pressure holder 5 can be a vacuum pump 7 or other equipment. Vacuum pipe 4 provides vacuum for CNC components that require vacuum. Some cutting fluid is drawn into vacuum pipe 4 and enters vacuum chamber 3. Under the action of gravity, the cutting fluid enters buffer chamber 2 from vacuum chamber 3. At this time, the automatic drainage device is in the cutting fluid receiving state, that is, buffer valve 8 is open, vacuum valve 9, air filling valve 10 and drain valve 11 are all closed, and negative pressure retainer 5 maintains negative pressure in vacuum chamber 3. When a certain amount of cutting fluid accumulates in buffer tank 2, buffer valve 8 closes. At this time, the CNC can be in the workpiece machining state or the tool changing state. After buffer valve 8 closes, vacuum tank 3 is disconnected from buffer tank 2, and the negative pressure value in vacuum tank 3 is maintained by negative pressure holder 5. After buffer tank 2 is disconnected from vacuum tank 3, drain valve 11 and air filling valve 10 open, vacuum valve 9 closes, and air pump 7 supplies air to buffer tank 2, allowing the cutting fluid in buffer tank 2 to be quickly drained into water storage tank 1. This process is the drainage state.

[0042] After the buffer tank 2 has drained, drain valve 11, buffer valve 8, and inflation valve 10 are closed, and air pump 7 stops. Vacuum generator 6 evacuates the buffer tank 2; vacuum generator 6 is typically an air extraction device, such as a vacuum pump. When the vacuum value in buffer tank 2 equals the vacuum value in vacuum tank 3, buffer valve 8 is opened, and buffer tank 2 can then normally receive the cutting fluid from vacuum tank 3. This process is a switching state. During the switching state, the negative pressure value in vacuum tank 3 is still maintained by the vacuum retainer.

[0043] To improve the stability of CNC, the entire process of switching states can be completed in the tool change state of the CNC.

[0044] The technical solution of the present invention and its corresponding details have been described above. It is understood that the above description is only some implementation schemes of the technical solution of the present invention, and some details may be omitted in the specific implementation.

[0045] Furthermore, in some embodiments of the above invention, multiple embodiments may be combined; however, due to space limitations, all such combinations will not be listed here. Those skilled in the art can freely combine and implement the above embodiments according to their needs to obtain a better application experience.

[0046] When implementing the subject matter of this invention, those skilled in the art can obtain other detailed configurations or drawings based on the subject matter and drawings. Obviously, these details are still within the scope of the subject matter of this invention without departing from it.

Claims

1. An integrated CNC-specific vacuum negative pressure automatic drainage device, characterized in that: The device includes a water tank (1), a buffer tank (2), and a vacuum tank (3). One end of the vacuum tank (3) is connected to the vacuum pipe (4) of the CNC machine, and the other end of the vacuum tank (3) is connected to the buffer tank (2). The buffer tank (2) is connected to the water tank (1). The vacuum tank (3) is connected to a negative pressure maintainer (5) that maintains negative pressure inside the vacuum tank (3). The integrated CNC-specific vacuum negative pressure automatic drainage device also includes a vacuum generator (6) for evacuating the buffer tank (2) and an air pump (7) for supplying airflow into the buffer tank (2). The vacuum tank (3) and the buffer tank... (2) A buffer valve (8) is provided between the vacuum box (3) and the buffer box (2) to control the connection or disconnection. A vacuum valve (9) is provided between the vacuum generator (6) and the buffer box (2) to control the connection or disconnection. An air pump (7) is provided between the air pump (7) and the buffer box (2) to control the connection or disconnection. A drain valve is provided between the buffer box (2) and the water storage tank (1) to control the connection or disconnection. 11); The integrated CNC-specific vacuum negative pressure automatic drainage device includes a cutting fluid receiving state, a drainage state, and a switching state. In the cutting fluid receiving state: the buffer valve (8) is open, and the drainage valve (11), the vacuum valve (9), and the air filling valve (10) are all closed. The cutting fluid in the vacuum pipe (4) enters the buffer tank (2) through the vacuum tank (3), and the negative pressure protector maintains the negative pressure in the vacuum tank (3). In the drainage state: the buffer valve (8) is closed, and the drainage valve (11) and the air filling valve (10) are open. When the vacuum valve (9) is closed, the air pump (7) supplies gas into the buffer tank (2) through the air filling valve (10), so that the cutting fluid in the buffer tank (2) is discharged into the water storage tank (1); in the switching state: the buffer valve (8), the air filling valve (10), and the drain valve (11) are all closed, the vacuum valve (9) is opened, and the vacuum generator (6) evacuates the buffer tank (2) until the negative pressure value in the buffer tank (2) is equal to the negative pressure value in the vacuum tank (3), then the buffer valve (8) is opened and the vacuum valve (9) is closed.

2. The integrated CNC-specific vacuum negative pressure automatic drainage device according to claim 1, characterized in that: CNC includes the cutting state when the tool is machining the workpiece and the tool changing state when the tool is changed, wherein the switching state is completed in the tool changing state.

3. The integrated CNC-specific vacuum negative pressure automatic drainage device according to claim 1, characterized in that: The integrated CNC-specific vacuum negative pressure automatic drainage device also includes a controller and a first sensor for detecting the vacuum state inside the vacuum chamber (3) and a second sensor for detecting the vacuum state inside the buffer chamber (2). The buffer valve (8), the drain valve (11), the inflation valve (10), and the vacuum valve (9) are all solenoid valves. The negative pressure retainer (5), the vacuum generator (6), the air pump (7), the buffer valve (8), the drain valve (11), the inflation valve (10), and the vacuum valve (9) are all controlled by the controller.

4. The integrated CNC-specific vacuum negative pressure automatic drainage device according to claim 1, characterized in that: The vacuum chamber (3) is located above the buffer chamber (2), and the cutting fluid in the vacuum chamber (3) flows into the buffer chamber (2) under the action of gravity.

5. The integrated CNC-specific vacuum negative pressure automatic drainage device according to claim 1, characterized in that: The vacuum generator (6) and the air pump (7) are both fixed to the water storage tank (1).

6. The integrated CNC-specific vacuum negative pressure automatic drainage device according to claim 5, characterized in that: The water storage tank (1) is provided with a bracket, the bracket is provided with a foot that contacts the ground, the foot is fixed to the bracket by threads, the vacuum generator (6) is fixed to the bracket by screws, and the air pump (7) is fixed to the bracket by screws.

7. The integrated CNC-specific vacuum negative pressure automatic drainage device according to claim 6, characterized in that: The vacuum generator (6) is connected to the buffer box (2) through a vacuum pipe, and the vacuum valve (9) is connected in series to the vacuum pipe.

8. The integrated CNC-specific vacuum negative pressure automatic drainage device according to claim 7, characterized in that: The air pump (7) is connected to the buffer box (2) through an air inflator, and the air inflator (10) is connected in series to the air inflator.

9. The integrated CNC-specific vacuum negative pressure automatic drainage device according to claim 8, characterized in that: Both the inflation tube and the vacuum tube are connected to the upper end of the buffer box (2).

10. The integrated CNC-specific vacuum negative pressure automatic drainage device according to claim 1, characterized in that: The vacuum chamber (3) and the buffer chamber (2) are connected by a connecting pipe, and the buffer valve (8) is connected in series to the connecting pipe.

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