Special vacuum negative-pressure automatic drainage device for integrated CNC (computer numerical control)

Abstract

The invention relates to the technical field of CNC equipment accessories, in particular to a vacuum negative pressure automatic drainage device special for integrated CNC. According to the vacuum negative pressure automatic drainage device special for the integrated CNC, the technical problem that in the prior art, a CNC vacuum system cannot automatically discharge cutting fluid is solved. A vacuum negative pressure automatic drainage device special for integrated CNC comprises a water storage tank, a buffer tank and a vacuum tank, the buffer tank is arranged and used for storing cutting fluid in a vacuum pipeline, in the cutting fluid receiving state, the vacuum tank and the buffer tank form a whole, the negative pressure value in the vacuum tank is the same as that in the buffer tank, and therefore the cutting fluid in the vacuum pipeline can be drained. Cutting fluid entering the vacuum box from the vacuum pipeline enters the buffer box to be stored, when the buffer box needs to discharge the cutting fluid, the vacuum box and the buffer box are disconnected through the buffer valve, the cutting fluid in the buffer box can be discharged, and the vacuum box still keeps a corresponding vacuum value in the water discharging process. Automatic drainage is achieved, and meanwhile non-stop drainage can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of CNC equipment accessories, and in particular to an integrated CNC special vacuum negative pressure automatic drainage device. Background Art

[0002] CNC is the abbreviation of numerical control machine tools. It refers to computer numerical control machine tools, which are automated machine tools equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, express them in coded numbers, and input them into the numerical control device through information carriers. After calculation and processing, the numerical control device sends various control signals to control the movement of the machine tool and automatically process the parts according to the shape and size required by the drawing.

[0003] At present, most CNCs use cutting fluid to cool and lubricate the tools, and the products being processed are mostly fixed by vacuum adsorption. Although this processing and fixing method has the advantages of convenient operation, fastness and high safety, it generally has a common disadvantage. It is difficult to achieve a complete seal between the processed products and the fixtures. As a result, the cutting fluid will be sucked into the fixtures during the processing, and then into the vacuum device, resulting in frequent addition of cutting fluid in the machine. If you are a little careless, the excessive loss of cutting fluid will cause the tool to not cool down during processing, resulting in tool breakage, machine downtime and other accidents.

[0004] Therefore, the vacuum system of CNC in the prior art has the technical problem of being unable to automatically discharge the cutting fluid. Summary of the invention

[0005] The invention provides an integrated CNC special vacuum negative pressure automatic drainage device, which solves the technical problem that the vacuum system of CNC in the prior art cannot automatically discharge cutting fluid.

[0006] Some implementation plans adopted to solve the above technical problems include: An integrated CNC-specific vacuum negative pressure automatic drainage device comprises a water storage tank, a buffer tank and a vacuum tank, one end of the vacuum tank is connected to a vacuum pipe of the CNC, the other end of the vacuum tank is connected to the buffer tank, and the buffer tank is in communication with the water storage tank; The vacuum box is connected to a negative pressure retainer for maintaining negative pressure in the vacuum box; 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 air flow into the buffer box; A buffer valve for controlling the connection or disconnection between the vacuum box and the buffer box is provided between the vacuum box and the buffer box, a vacuum valve for controlling the connection or disconnection between the vacuum generator and the buffer box is provided between the vacuum generator and the buffer box, an air charging valve for controlling the connection or disconnection between the air pump and the buffer box is provided between the air pump and the buffer box, and a drainage valve for controlling the connection or disconnection between the buffer box and the water storage tank is provided between the buffer box and the water storage tank; Among them, the integrated CNC special 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 opened, the drain valve, the vacuum valve and the inflation valve are all closed, the cutting fluid in the vacuum pipe enters the buffer box 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 drainage valve and the charging valve are opened, the vacuum valve is closed, and the air pump supplies gas into the buffer tank through the charging 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 opened, and the vacuum generator evacuates the buffer box until the negative pressure value in the buffer box is equal to the negative pressure value in the vacuum box, and then the buffer valve opens and the vacuum valve closes.

[0007] Preferably, the CNC includes a cutting state when the tool is processing a 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 in the vacuum box, a second sensor for detecting the vacuum state in the buffer box, the buffer valve, the drain valve, the inflation valve, and the vacuum valve are all solenoid valves, and the negative pressure retainer, the vacuum generator, the air pump, and the buffer valve, the drain valve, the inflation valve, and the vacuum valve are all controlled by the controller.

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

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

[0011] Preferably, the water tank is provided with a bracket, the bracket is provided with a foot in contact with the ground, the foot is 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 through a vacuum air pipe, and the vacuum valve is connected in series to the vacuum air pipe.

[0013] Preferably, the air pump is connected to the buffer box through an air charging pipe, and the air charging valve is connected in series to the air charging pipe.

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

[0015] Preferably, the vacuum box is connected to the buffer box via a connecting pipe, and the buffer valve is serially connected to the connecting pipe.

[0016] Compared with the prior art, the present invention has the following advantages: A buffer box is provided, which is used to store the cutting fluid in the vacuum pipe. In the cutting fluid receiving state, the vacuum box and the buffer box form a whole. At this time, the negative pressure values ​​in the vacuum box and the buffer box are the same. The cutting fluid that enters the vacuum box from the vacuum pipe enters the buffer box for storage. When the buffer box needs to discharge the cutting fluid, the vacuum box is disconnected from the buffer box through the buffer valve. At this time, the cutting fluid in the buffer box can be drained. Moreover, the vacuum box still maintains the corresponding vacuum value during the drainage process. Automatic drainage can be achieved while non-stop drainage can be achieved.

[0017] An air pump is provided to supply air flow into the buffer box when the buffer box is drained, so that the cutting fluid in the buffer box can be quickly discharged, thereby improving the drainage efficiency of the buffer box.

[0018] By setting up a vacuum generator, the vacuum generator is used to evacuate the buffer box after drainage is completed, so that the vacuum value of the buffer box after drainage is completed is equal to the vacuum value in the vacuum box, and then, the buffer valve is opened, and the buffer box can normally cache the cutting fluid in the vacuum box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For the purpose of explanation, several embodiments of the present invention technology are described in the following drawings. The following drawings are incorporated into this text and constitute a part of the specific embodiment. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring the concept of the present invention subject technology.

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

[0021] Figure 2Schematic diagram of the internal structure of the water storage tank, buffer tank and vacuum tank.

[0022] Figure 3 Schematic diagram of the relative positions of the water storage tank, buffer tank and vacuum tank.

[0023] Figure 4 It is the work flow chart of the present invention.

[0024] As shown in the figure: 1. Water storage tank, 2. Buffer tank, 3. Vacuum tank, 4. Vacuum pipe, 5. Negative pressure retainer, 6. Vacuum generator, 7. Air pump, 8. Buffer valve, 9. Vacuum valve, 10. Inflation valve, 11. Drain valve. DETAILED DESCRIPTION

[0025] The specific embodiments shown below are intended to be descriptions of various configurations of the subject technology of the present invention, and are not intended to represent the only configuration that the subject technology of the present invention can be put into practice. The specific embodiments include specific details intended to provide a thorough understanding of the subject technology of the present invention. However, it will be clear and obvious to those skilled in the art that the subject technology of the present invention is not limited to the specific details shown herein, and can be put into practice without these specific details.

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

[0027] The terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0028] Reference Figures 1 to 4 As shown, an integrated CNC dedicated vacuum negative pressure automatic drainage device comprises a water storage tank 1, a buffer tank 2 and a vacuum tank 3, one end of the vacuum tank 3 is connected to a vacuum pipe 4 of the CNC, the other end of the vacuum tank 3 is connected to the buffer tank 2, and the buffer tank 2 is in communication with the water storage tank 1; The vacuum box 3 is connected to a negative pressure retainer 5 for maintaining negative pressure in the vacuum box 3; The integrated CNC dedicated vacuum negative pressure automatic drainage device also includes a vacuum generator 6 for evacuating the buffer box 2 and an air pump 7 for supplying air flow into the buffer box 2; A buffer valve 8 for controlling the connection or disconnection between the vacuum box 3 and the buffer box 2 is provided between the vacuum box 3 and the buffer box 2; a vacuum valve 9 for controlling the connection or disconnection between the vacuum generator 6 and the buffer box 2 is provided between the vacuum generator 6 and the buffer box 2; an air charging valve 10 for controlling the connection or disconnection between the air pump 7 and the buffer box 2 is provided between the air pump 7 and the buffer box 2; a drain valve 11 for controlling the connection or disconnection between the buffer box 2 and the water storage tank 1 is provided between the buffer box 2 and the water storage tank 1; Among them, the integrated CNC special 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 opened, the drain valve 11, the vacuum valve 9 and the charging 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 drainage valve 11 and the charging valve 10 are opened, the vacuum valve 9 is closed, and the air pump 7 supplies gas into the buffer tank 2 through the charging 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 opened, 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, and then the buffer valve 8 is opened and the vacuum valve 9 is closed.

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

[0030] The switching state requires that the vacuum box 3 is connected to the buffer box 2, that is, the buffer valve 8 needs to be opened. Although the buffer box 2 has been evacuated before the buffer valve 8 is opened, the vacuum value in the vacuum box 3 may still fluctuate to a certain extent during the opening of the buffer valve 8. Completing all the switching state actions before the tool changing process is completed can avoid the vacuum value fluctuation in the vacuum box 3 affecting the CNC processing performance.

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

[0032] The controller can be integrated into the CNC control system, or communicate with the CNC control system, and the CNC control system can perform central control through the controller.

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

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

[0035] In some embodiments, the water tank 1 is provided with a bracket, the bracket is provided with a foot in contact with 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, so that the bracket can be adjusted to a horizontal state or a required state.

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

[0038] In some embodiments, the air pump 7 is connected to the buffer box 2 through an air filling pipe, and the air filling valve 10 is connected in series to the air filling pipe.

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

[0040] In some embodiments, the vacuum box 3 is connected to the buffer box 2 via a connecting pipe, and the buffer valve 8 is serially connected to the connecting pipe.

[0041] The technical solution of the present invention is further described below through the 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 air pump 7 or other equipment; The vacuum pipe 4 provides vacuum for the CNC parts that require vacuum, and part of the cutting fluid will be sucked into the vacuum pipe 4. The cutting fluid entering the vacuum pipe 4 will enter the vacuum box 3, and enter the buffer box 2 from the vacuum box 3 under the action of gravity. At this time, the automatic drainage device is in a cutting fluid receiving state, that is, the buffer valve 8 is open, the vacuum valve 9, the charging valve 10 and the drainage valve 11 are all closed, and the negative pressure retainer 5 maintains the negative pressure in the vacuum box 3; When a certain amount of cutting fluid accumulates in the buffer box 2, the buffer valve 8 is closed. At this time, the CNC can be in the state of processing workpieces or in the state of changing tools. After the buffer valve 8 is closed, the vacuum box 3 is disconnected from the buffer box 2, and the negative pressure value in the vacuum box 3 is maintained by the negative pressure retainer 5. After the buffer box 2 is disconnected from the vacuum box 3, the drainage valve 11 and the charging valve 10 are opened, the vacuum valve 9 is closed, and the air pump 7 supplies air to the buffer box 2, so that the cutting fluid in the buffer box 2 can be quickly discharged into the water storage tank 1. This process is the drainage state.

[0042] After the buffer box 2 is drained, the drain valve 11, the buffer valve 8 and the charging valve 10 are closed, and the air pump 7 is stopped. The vacuum generator 6 evacuates the buffer box 2, and the vacuum generator 6 is usually an exhaust device, such as a vacuum pump. When the vacuum value in the buffer box 2 is equal to the vacuum value in the vacuum box 3, the buffer valve 8 is opened, and the buffer box 2 can normally receive the cutting fluid in the vacuum box 3. This process is a switching state. In the switching state, the negative pressure value in the vacuum box 3 is still maintained by the vacuum retainer.

[0043] In order to improve the stability of CNC, the entire process of switching states can be completed in the tool changing state of CNC.

[0044] The above describes the subject technical solution and corresponding details of the present invention. It can be understood that the above description is only some implementation plans of the subject technical solution of the present invention, and some details may be omitted during the specific implementation.

[0045] In addition, in some embodiments of the above invention, multiple embodiments may be implemented in combination, and various combinations are not listed one by one due to space limitations. Those skilled in the art can freely combine and implement the above embodiments as needed in specific implementation to obtain a better application experience.

[0046] When implementing the subject technical solution of the present invention, those skilled in the art can obtain other detailed configurations or drawings based on the subject technical solution of the present invention and the drawings. Obviously, these details still fall within the scope covered by the subject technical solution of the present invention without departing from the subject technical solution of the present invention.

Claims

1. An integrated CNC-specific vacuum negative pressure automatic drainage device, characterized in that: The invention comprises a water storage tank (1), a buffer tank (2) and a vacuum tank (3); one end of the vacuum tank (3) is connected to a vacuum pipe (4) of a CNC, the other end of the vacuum tank (3) is connected to the buffer tank (2), and the buffer tank (2) is in communication with the water storage tank (1); the vacuum tank (3) is connected to a negative pressure retainer (5) for maintaining negative pressure in the vacuum tank (3); the integrated CNC-specific vacuum negative pressure automatic drainage device also comprises a vacuum generator (6) for evacuating the buffer tank (2) and an air pump (7) for supplying air flow into the buffer tank (2); the vacuum tank (3) and the buffer tank are connected to each other. A buffer valve (8) is provided between the vacuum box (3) and the buffer box (2) for controlling the connection or disconnection between the vacuum box (3) and the buffer box (2); a vacuum valve (9) is provided between the vacuum generator (6) and the buffer box (2) for controlling the connection or disconnection between the vacuum generator (6) and the buffer box (2); an air charging valve (10) is provided between the air pump (7) and the buffer box (2) for controlling the connection or disconnection between the air pump (7) and the buffer box (2); and a drainage valve (10) is provided between the buffer box (2) and the water storage tank (1) for controlling the connection or disconnection between the buffer box (2) and the water storage tank (1). 11); wherein the integrated CNC dedicated vacuum negative pressure automatic drainage device comprises a cutting fluid receiving state, a drainage state and a switching state. In the cutting fluid receiving state: the buffer valve (8) is opened, the drainage valve (11), the vacuum valve (9) and the inflation valve (10) are all closed, the cutting fluid in the vacuum pipe (4) enters the buffer box (2) through the vacuum box (3), and the negative pressure protector maintains the negative pressure in the vacuum box (3); in the drainage state: the buffer valve (8) is closed, the drainage valve (11) and the inflation valve (10) are opened. The buffer tank (2) is opened, the vacuum valve (9) is closed, and the air pump (7) supplies gas into the buffer tank (2) through the charging 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 charging 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), and 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 is characterized in that: The CNC includes a cutting state when the tool processes a workpiece and a 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 is characterized in that: The integrated CNC-specific vacuum negative pressure automatic drainage device further comprises a controller and a first sensor for detecting the vacuum state in the vacuum box (3), and a second sensor for detecting the vacuum state in the buffer box (2); the buffer valve (8), the drainage 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 drainage 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 is characterized in that: The vacuum box (3) is located above the buffer box (2), and the cutting fluid in the vacuum box (3) flows into the buffer box (2) under the action of gravity.

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

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

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

9. The integrated CNC-specific vacuum negative pressure automatic drainage device according to claim 8 is characterized in that: The inflation pipe and the vacuum air pipe are both 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 is characterized in that: The vacuum box (3) is connected to the buffer box (2) via a connecting pipe, and the buffer valve (8) is connected in series to the connecting pipe.

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