Machine tool cooling device and CNC machine tool system

Abstract

The present invention relates to a machine tool cooling device and a numerical control machine tool system, wherein the machine tool cooling device comprises a closed water tank, a heat exchange device and a bypass pipeline, the water tank outlet of the closed water tank is connected with the heat exchange water inlet of the heat exchange device after passing through the unit water pump, the heat exchange water outlet of the heat exchange device can be connected with the water inlet of the machine tool, the water outlet of the machine tool is connected with the water tank inlet of the closed water tank, the closed water tank is provided with a water replenishment port and a bypass water outlet, the water replenishment port can be connected with an external water supply device, one end of the bypass pipeline is connected with the bypass water outlet, and the other end of the bypass pipeline is connected with the heat exchange device. Thereby, the cooling water in the machine tool cooling device can be still in a closed space when replenishing water, and at the same time, excess water or air can also flow into the heat exchange device from the bypass pipeline, thereby effectively avoiding the occurrence of the closed water tank bursting.

Description

Technical Field

[0001] The invention relates to the field of numerical control machining, in particular to a machine tool cooler device and a numerical control machine tool system. Background Art

[0002] During the use of CNC machine tools, the temperature of the equipment is high, and it is necessary to use a machine tool cooler to cool it down to ensure that the CNC machine tools can operate normally with high precision. Because the temperature of the equipment is high during CNC machine tool processing, the water in the water tank of the machine tool cooler evaporates quickly and needs to be replenished frequently. During the initial filling or subsequent maintenance and water replenishment, the water tank is prone to bursting, affecting the normal use of the machine tool cooler. Summary of the invention

[0003] Based on this, it is necessary to provide a machine tool cooling device and a CNC machine tool system to solve the problem of easy explosion in the system.

[0004] A machine tool cooling device comprises a closed water tank, a heat exchange device and a bypass pipeline, wherein the closed water tank is provided with a water tank outlet, a water tank inlet, a water replenishing port and a bypass outlet, and the heat exchange device is provided with a heat exchange outlet and a heat exchange inlet, the water tank outlet is connected with the heat exchange inlet after passing through a unit water pump, the heat exchange outlet can be connected with the machine tool water inlet, the water outlet of the machine tool is connected with the water tank inlet, the water replenishing port can be connected with an external water supply device, one end of the bypass pipeline is connected with the bypass outlet, and the other end of the bypass pipeline is connected with the heat exchange device.

[0005] The above scheme provides a machine tool cooling device. In order to prevent the cooling water in the machine tool cooling device from being polluted by the external environment, a closed water circulation system is formed between the closed water tank, the heat exchange device and the machine tool. The water in the closed water tank reaches the machine tool after heat exchange in the heat exchange device to cool the machine tool. The cooling water carries the heat and flows back to the closed water tank. Then, under the action of the unit water pump, it flows to the heat exchange device for heat exchange again, and circulates in sequence. However, due to the high temperature and high water evaporation of the machine tool during use, the closed water tank needs to be frequently replenished with water. In the process of replenishing water, the head of the external water supply device generally used to communicate with the water replenishment port is greater than the head of the unit water pump. Therefore, in order to ensure the closedness of the entire system and prevent the cooling water from being polluted, it is also necessary to avoid the large head of the external water supply device causing the water inlet speed of the closed water tank to be greater than the water outlet speed, so that the cooling water or gas in the closed water tank cannot be discharged in time, and the closed water tank explodes. A bypass water outlet is further arranged on the closed water tank, and the bypass pipeline is connected between the bypass water outlet and the heat exchange device, so that the cooling water in the machine tool cooler device can remain in the closed space during water replenishment, and at the same time, excess water or air can also flow into the heat exchange device from the bypass pipeline in time, thereby effectively avoiding the closed water tank from bursting.

[0006] In one of the embodiments, a one-way water flow component is provided on the bypass pipeline, so that the water flow in the bypass pipeline can only flow from the bypass water outlet to the heat exchange device.

[0007] In one of the embodiments, the one-way water flow component is a one-way valve, and the flow direction of the one-way valve is from the bypass water outlet to the heat exchange device.

[0008] In one of the embodiments, the machine tool cooling device further comprises a pressure detection component for detecting the pressure in the closed water tank, and the pressure detection component is electrically connected to the one-way water flow component.

[0009] In one of the embodiments, the position on the heat exchange device that is connected to the bypass pipeline is located downstream of the water pump of the unit.

[0010] In one of the embodiments, the water replenishment port is provided with a switch valve or a water replenishment one-way valve.

[0011] In one embodiment, the heat exchange device includes a heat exchange pipeline, the heat exchange pipeline is connected between the closed water tank and the machine tool, the bypass pipeline is connected to the heat exchange pipeline, the position in the heat exchange pipeline that is connected to the bypass pipeline is the bypass position, and the pipe diameter downstream of the bypass position on the heat exchange pipeline is larger than the pipe diameter upstream of the bypass position.

[0012] In one embodiment, the bypass water outlet is located at the upper end of the closed water tank, and the water tank water outlet is located at the lower end of the closed water tank.

[0013] A numerical control machine tool system comprises a machine tool and the above-mentioned machine tool cooling device, wherein the heat exchange water outlet is connected with the water inlet of the machine tool, and the water outlet of the machine tool is connected with the water inlet of the water tank.

[0014] The above scheme provides a CNC machine tool system, which cools the machine tool by arranging the machine tool cooling device, thereby preventing the closed water tank from bursting during the initial filling or subsequent maintenance. This not only meets the requirement that the cooling water is always in a closed space and is not polluted by the outside world, but also avoids the danger of the closed water tank bursting.

[0015] In one of the embodiments, the CNC machine tool system further includes an external water supply device, and the lift of the external water supply device is greater than the lift of the water pump of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the machine tool cooling device described in this embodiment.

[0017] Description of reference numerals:

[0018] 10. Machine tool cooling device, 11. Closed water tank, 111. Water tank outlet, 112. Water tank inlet, 113. Water replenishment port, 114. Bypass outlet, 12. Heat exchange pipeline, 121. Heat exchange outlet, 122. Bypass position, 13. Bypass pipeline, 131. One-way water flow component, 14. Unit water pump. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The various technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-described embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0022] like Figure 1 As shown, in one embodiment, a machine tool cooling device 10 is provided, including a closed water tank 11, a heat exchange device and a bypass pipeline 13, wherein the closed water tank 11 is provided with a water tank outlet 111, a water tank inlet 112, a water replenishment port 113 and a bypass outlet 114, and the heat exchange device is provided with a heat exchange outlet 121 and a heat exchange inlet, the water tank outlet 111 of the closed water tank 11 is connected with the heat exchange inlet of the heat exchange device after passing through the unit water pump 14, the heat exchange outlet 121 of the heat exchange device can be connected with the water inlet of the machine tool, the water outlet of the machine tool is connected with the water tank inlet 112 of the closed water tank 11, the water replenishment port 113 can be connected with an external water supply device, one end of the bypass pipeline 13 is connected with the bypass outlet 114, and the other end of the bypass pipeline 13 is connected with the heat exchange device.

[0023] In order to prevent the cooling water in the machine tool cooling device 10 from being contaminated by the external environment, a closed water circulation system is formed between the closed water tank 11, the heat exchange device and the machine tool. The water inlet and outlet of the above-mentioned machine tool refer to the water inlet and outlet of the internal pipeline in the machine tool that is used to connect with the heat exchange device to achieve cooling. The cooling water takes away the heat in the machine tool by circulating in the internal pipeline. The water in the closed water tank 11 reaches the machine tool after heat exchange in the heat exchange device to cool the machine tool. The cooling water carries the heat back to the closed water tank 11, and then flows to the heat exchange device for heat exchange again under the action of the unit water pump 14, and circulates in sequence. However, due to the high temperature and high water evaporation when the machine tool is in use, the closed water tank 11 needs to be frequently replenished with water. During the water replenishment process, the head of the external water supply device connected to the water replenishment port 113 is generally greater than the head of the unit water pump 14. Therefore, in order to ensure the closedness of the entire system and avoid the cooling water from being contaminated, it is also to avoid the larger head of the external water supply device causing the water inlet speed of the closed water tank 11 to be greater than the water outlet speed, so that the cooling water or gas in the closed water tank 11 cannot be discharged in time, and the closed water tank 11 will burst. Figure 1As shown, a bypass water outlet 114 is further provided on the closed water tank 11, and the bypass pipe 13 is connected between the bypass water outlet 114 and the heat exchange device, so that the cooling water in the machine tool cooler device 10 can remain in the closed space during water replenishment, and at the same time, excess water or air can also flow into the heat exchange device from the bypass pipe 13 in time, thereby effectively avoiding the closed water tank 11 from bursting.

[0024] Furthermore, if Figure 1 As shown, in one embodiment, a one-way water flow component 131 is provided on the bypass pipe 13, so that the water flow in the bypass pipe 13 can only flow from the bypass water outlet 114 to the heat exchange device. That is, the cooling water in the closed water tank 11 can only flow from the closed water tank 11 to the heat exchange device through the bypass pipe 13, and cannot flow from the heat exchange device back to the closed water tank 11 through the bypass pipe 13. In the case of water shortage in the closed water tank 11, during normal use, the cooling water of the unit water pump 14 flows back from the bypass pipe 13 to the closed water tank 11 after entering the heat exchange device, thereby affecting the normal cooling and heat dissipation.

[0025] Specifically, in one embodiment, the one-way water flow component 131 is a one-way valve, and the one-way valve directs flow from the bypass outlet 114 to the heat exchange device. Optionally, the one-way water flow component 131 can also be other components that can achieve one-way flow control of cooling water, which is not specifically limited here.

[0026] Furthermore, in one embodiment, the machine tool cooling device 10 further includes a pressure detection component for detecting the pressure in the closed water tank 11 , and the pressure detection component is electrically connected to the one-way water flow component 131 .

[0027] When the pressure detection component detects that the pressure in the closed water tank 11 is greater than the allowable preset pressure, the one-way water flow component 131 is controlled to open, so as to discharge the cooling water or gas in the closed water tank 11 in time.

[0028] Further, in one embodiment, if Figure 1 As shown, the position on the heat exchange device that is connected to the bypass pipeline 13 is located downstream of the unit water pump 14.

[0029] During the initial water replenishment, the unit water pump 14 will be turned on together with the external water supply device, but during the maintenance process, the unit water pump 14 is in a closed state. By setting the position on the heat exchange device that is connected to the bypass pipe 13 downstream of the unit water pump 14, the efficiency of timely discharge of cooling water and gas in the closed water tank 11 during maintenance is effectively improved.

[0030] More specifically, in one embodiment, the water replenishment port 113 is provided with a switch valve or a water replenishment check valve, thereby effectively ensuring that the closed water tank 11 is in a closed state when the machine tool cooling device 10 is normally cooling the machine tool, thereby avoiding internal contamination and corrosion.

[0031] Further, in one embodiment, if Figure 1 As shown, the heat exchange device includes a heat exchange pipeline 12, the heat exchange pipeline 12 is connected between the closed water tank 11 and the machine tool, the bypass pipeline 13 is connected to the heat exchange pipeline 12, the position in the heat exchange pipeline 12 that is connected to the bypass pipeline 13 is the bypass position 122, and the pipe diameter of the heat exchange pipeline 12 located downstream of the bypass position 122 is larger than the pipe diameter located upstream of the bypass position 122. Therefore, when the cooling water or gas in the closed water tank 11 needs to be discharged in time, the cooling water or gas flowing out through the bypass pipeline 13 can have enough space to circulate quickly, further improving the protection effect of the closed water tank 11.

[0032] Further, in one embodiment, if Figure 1 As shown, the bypass water outlet 114 is located at the upper end of the closed water tank 11, and the water tank water outlet 111 is located at the lower end of the closed water tank 11. Thus, in the process of not performing heat exchange, the gas in the closed water tank 11 is discharged as much as possible, and the cooling water replenished from the water replenishment port 113 is retained in the closed water tank 11 as much as possible.

[0033] Furthermore, in another embodiment, a CNC machine tool system is provided, including a machine tool and the above-mentioned machine tool cooling device 10, the heat exchange outlet 121 of the heat exchange device is connected to the water inlet of the machine tool, and the water outlet of the machine tool is connected to the water tank inlet 112 of the closed water tank 11.

[0034] The above scheme provides a CNC machine tool system, which cools the machine tool by arranging the machine tool cooling device 10, thereby preventing the closed water tank 11 from bursting during the initial filling or subsequent maintenance. This not only meets the requirement that the cooling water is always in a closed space and is not polluted by the outside world, but also avoids the danger of the closed water tank 11 bursting.

[0035] Furthermore, in one embodiment, the CNC machine tool system further includes an external water supply device, and the head of the external water supply device is greater than the head of the unit water pump 14. The water replenishment efficiency is improved, and based on the setting of the bypass pipeline 13, the larger water replenishment efficiency will not cause the closed water tank 11 to burst.

[0036] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A machine tool cooling device, characterized in that: It includes a closed water tank, a heat exchange device and a bypass pipeline. The closed water tank is provided with a water tank outlet, a water tank inlet, a water replenishment port and a bypass outlet. The heat exchange device is provided with a heat exchange outlet and a heat exchange inlet. The water tank outlet is connected with the heat exchange inlet after passing through the unit water pump. The heat exchange outlet can be connected with the machine tool inlet. The machine tool outlet is connected with the water tank inlet. The water replenishment port can be connected with an external water supply device. One end of the bypass pipeline is connected with the bypass outlet, and the other end of the bypass pipeline is connected with the heat exchange device. The head of the external water supply device is greater than the head of the water pump of the unit; The bypass pipeline is provided with a one-way water flow component, so that the water flow in the bypass pipeline can only flow from the bypass water outlet to the heat exchange device.

2. The machine tool cooling device according to claim 1, characterized in that: The one-way water flow component is a one-way valve, and the flow direction of the one-way valve is the direction from the bypass water outlet to the heat exchange device.

3. The machine tool cooling device according to claim 2, characterized in that: It also includes a pressure detection component for detecting the pressure in the closed water tank, and the pressure detection component is electrically connected to the one-way water flow component.

4. The machine tool cooling device according to any one of claims 1 to 3, characterized in that: The position on the heat exchange device that is connected to the bypass pipeline is located downstream of the unit water pump.

5. The machine tool cooling device according to any one of claims 1 to 3, characterized in that: The water replenishment port is provided with a switch valve or a water replenishment one-way valve.

6. The machine tool cooling device according to any one of claims 1 to 3, characterized in that: The heat exchange device includes a heat exchange pipeline, which is connected between the closed water tank and the machine tool. The bypass pipeline is connected to the heat exchange pipeline. The position in the heat exchange pipeline that is connected to the bypass pipeline is the bypass position. The diameter of the pipe on the heat exchange pipeline downstream of the bypass position is larger than the diameter of the pipe upstream of the bypass position.

7. The machine tool cooling device according to any one of claims 1 to 3, characterized in that: The bypass water outlet is located at the upper end of the closed water tank, and the water tank water outlet is located at the lower end of the closed water tank.

8. A numerical control machine tool system, characterized in that: It comprises a machine tool and a machine tool cooling device according to any one of claims 1 to 7, wherein the heat exchange water outlet is connected to the water inlet of the machine tool, and the water outlet of the machine tool is connected to the water inlet of the water tank.

9. The numerical control machine tool system according to claim 8, characterized in that: It also includes an external water supply device, and the head of the external water supply device is greater than the head of the water pump of the unit.

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