Cooling device for numerical control flame cutting machine

Abstract

The utility model provides a kind of cooling device for numerical control flame cutting machine, comprising: cutting nozzle, first cooling water passage is provided outside cutting nozzle;Opening and closing mechanism, opening and closing mechanism includes left half and right half, when opening and closing mechanism is closed, left half and right half surround cutting nozzle from left and right sides, left half and right half are provided with airflow passage, the end of left half and the end of right half are provided with hook-shaped portion, hook-shaped portion is communicated with airflow passage, the end of hook-shaped portion is provided with hole;When opening and closing mechanism is closed, hook-shaped portion faces the end of cutting nozzle;The airflow passage is connected with negative pressure device.Further, left half and right half are connected with respective pivot respectively, and the pivot of left half and right half is driven to realize opening and closing by respective motor.The cooling device for numerical control flame cutting machine provided by the utility model reduces the temperature difference between the inside of cutting nozzle and the outside of cutting nozzle when cutting nozzle stops operating, realizes rapid and effective cooling of cutting nozzle and prolongs its service life.

Description

Technical Field

[0001] This utility model relates to the field of flame cutting machine technology, and in particular to a cooling device for CNC flame cutting machines. Background Technology

[0002] Flame cutting is a common method for rough machining of steel plates. CNC flame cutting machines use digital programs to drive the machine tool's movement, are equipped with a flame cutting system, and use a CNC system to control the switching on and off of the flame cutting system to cut metal materials such as steel plates. The temperature of the cutting torch in a flame cutting system can reach two to three thousand degrees Celsius during operation. To cool the torch, a water cooling system (such as...) is usually added to the outside of the cutting nozzle. Figure 1 As shown, a first cooling water channel 11 is added to the outside of the nozzle 1 to prevent the temperature of the torch from rising continuously. Therefore, the cooling water is on when the torch is running; when the torch stops running, the temperature of the nozzle is still very high due to residual heat, so the cooling water is still on.

[0003] During torch operation, the strong heating capacity of the flame means that the temperature difference between the inside and outside of the nozzle is not significant, even with cooling water. However, when the flame stops, the outside of the nozzle cools down faster due to the cooling water, while the inside lacks a cooling mechanism and is most affected by the flame. This results in a temperature difference between the inside and outside of the nozzle, and the different rates of thermal expansion and contraction affect the nozzle's lifespan.

[0004] This invention aims to provide a cooling device for a CNC flame cutting machine, which reduces the temperature difference between the inside and outside of the cutting nozzle when the nozzle stops operating, thereby achieving rapid and effective cooling of the nozzle and extending its service life. Utility Model Content

[0005] This invention aims to provide a cooling device for a CNC flame cutting machine, which reduces the temperature difference between the inside and outside of the cutting nozzle when the nozzle stops operating, thereby achieving rapid and effective cooling of the nozzle and extending its service life.

[0006] This utility model provides a cooling device for a CNC flame cutting machine, comprising: a cutting nozzle, with a first cooling water channel provided on the outer side of the cutting nozzle; an opening and closing mechanism, comprising a left half and a right half, wherein when the opening and closing mechanism is closed, the left half and the right half surround the cutting nozzle from the left and right sides, and the left half and the right half are provided with airflow channels, and each end of the left half and the right half is provided with a hook-shaped part, which is connected to the airflow channel, and the end of the hook-shaped part has a hole; when the opening and closing mechanism is closed, the hook-shaped part faces the end of the cutting nozzle; the airflow channel is connected to a negative pressure device.

[0007] Furthermore, a second cooling water channel is provided in the left and right halves.

[0008] Furthermore, the left and right halves are connected to their respective rotating shafts, which are opened and closed by their respective motors.

[0009] The cooling device for CNC flame cutting machines provided by this utility model reduces the temperature difference between the inside and outside of the cutting nozzle when the nozzle stops operating, thereby achieving rapid and effective cooling of the cutting nozzle and extending its service life. Attached Figure Description

[0010] Figure 1 The diagram shows a cross-sectional schematic of an existing cooling mechanism used for the nozzle of a CNC flame cutting machine.

[0011] Figure 2 The diagram shown is a schematic diagram of the opening and closing mechanism of an embodiment of this utility model.

[0012] Figure 3 The figure shown is a cross-sectional structural schematic diagram of the cooling device for a CNC flame cutting machine according to the first embodiment of this utility model.

[0013] Figure 4 The diagram shown is a schematic diagram illustrating the operating principle of the first embodiment of this utility model.

[0014] Figure 5 The figure shown is a cross-sectional structural diagram of the second embodiment of this utility model.

[0015] Figure label: 1: Cutting nozzle; 11: First cooling water passage; 12: Second cooling water passage; 2: Opening and closing mechanism; 21: Left half; 211: Rotating shaft; 22: Right half; 221: Rotating shaft; 3: Airflow channel; 31: Hole; 4: Hook-shaped part. Detailed Implementation

[0016] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0017] Figure 2 The diagram shown is a schematic representation of the opening and closing mechanism according to an embodiment of this utility model. Figure 2As shown, the opening and closing mechanism 2 includes a left half 21 and a right half 22. When the opening and closing mechanism 2 is closed, the left half 21 and the right half 22 surround the cutting nozzle 1 from the left and right sides. The left half 21 and the right half 22 are respectively connected to their respective rotating shafts 211 and 221, and the rotating shafts 211 and 221 of the left half 21 and the right half 22 can be driven by their respective motors to achieve opening and closing. The main function of the opening and closing mechanism 2 is to open and close, and to surround the cutting nozzle 1 from the left and right sides when closed. Those skilled in the art can conceive of many mechanisms to achieve this function. For example, the rotating shafts 211 and 221 are respectively connected to their respective gears, and the gears mesh with each other. When one gear is driven to rotate, the other gear also rotates synchronously, thereby achieving opening and closing. Those skilled in the art can conceive of many other mechanisms to achieve these functions. Further details are omitted here.

[0018] Figure 3 The diagram shown is a cross-sectional structural schematic of the cooling device for a CNC flame cutting machine according to the first embodiment of this utility model. Figure 3 As shown, the first embodiment of this utility model provides a cooling device for a CNC flame cutting machine, including: a cutting nozzle 1, with a first cooling water channel 11 provided on the outside of the cutting nozzle 1; an opening and closing mechanism 2, which includes a left half 21 and a right half 22. When the opening and closing mechanism 2 is closed, the left half 21 and the right half 22 surround the cutting nozzle 1 from the left and right sides. The left half 21 and the right half 22 are provided with airflow channels 3. The ends of the left half 21 and the right half 22 are both provided with hook-shaped parts 4, which are connected to the airflow channels 3. The ends of the hook-shaped parts 4 have holes 31. When the opening and closing mechanism 2 is closed, the hook-shaped parts 4 face the ends of the cutting nozzle 1. The airflow channels 3 are connected to a negative pressure device.

[0019] In the existing technology, when the flame is stopped, the outer side of the cutting nozzle cools down faster due to the operation of cooling water, while the inner side of the cutting nozzle lacks a cooling mechanism and is most affected by the flame. As a result, there is a temperature difference between the inner and outer sides of the cutting nozzle. Due to the effect of thermal expansion and contraction, there is a problem of different shrinkage rates, which affects the service life of the cutting nozzle. Figure 4 The diagram shown is a schematic diagram illustrating the operating principle of the first embodiment of this utility model. Figure 4As shown, when the flame stops, the opening and closing mechanism 2 closes, and the left half 21 and the right half 22 surround the nozzle 1. Through heat transfer, the opening and closing mechanism 2 itself can share some of the heat. When the opening and closing mechanism 2 is closed, the hook-shaped part 4 faces the end of the nozzle 1, and the airflow channel 3 is connected to the negative pressure device. Therefore, the airflow channel 3 can draw in the air inside the nozzle 1 and remove it through the airflow channel 3. The temperature inside the nozzle 1 is relatively high. By drawing the air inside the nozzle 1 into the airflow channel 3, the cooling of the inside of the nozzle 1 is effectively accelerated. On the other hand, the hot air inside the nozzle 1 also has the opportunity to flow through the outside of the nozzle 1, thereby reducing the temperature difference between the inside and outside of the nozzle and helping to extend the service life of the nozzle.

[0020] In addition, during flame emission, slag left after combustion can easily remain near the tip of the nozzle. If the slag accumulates, it will clog the nozzle and affect normal use. By using airflow channel 3 to suction the tip of nozzle 1, the slag can be removed and cleaned, thereby extending the maintenance cycle and service life of the nozzle.

[0021] Figure 5 The diagram shown is a cross-sectional structural schematic of the second embodiment of this utility model. Further, as... Figure 5 As shown, a second cooling water channel is provided in the left half 21 and the right half 22, so that the temperature can be accelerated when needed.

[0022] The cooling device for CNC flame cutting machines provided by this utility model reduces the temperature difference between the inside and outside of the cutting nozzle when the nozzle stops operating, thereby achieving rapid and effective cooling of the cutting nozzle and extending its service life.

[0023] In the description of this utility model, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" and their orientation or positional relationships are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A cooling device for a CNC flame cutting machine, comprising: The cutting nozzle has a first cooling water channel on its outer side. The cooling device for the CNC flame cutting machine is characterized in that it further includes: The opening and closing mechanism includes a left half and a right half. When the opening and closing mechanism is closed, the left half and the right half surround the cutting nozzle from the left and right sides. The left half and the right half are provided with airflow channels. The end of the left half and the end of the right half are provided with hook-shaped parts, which are connected to the airflow channels. The end of the hook-shaped parts has a hole. When the opening and closing mechanism is closed, the hook-shaped parts face the end of the cutting nozzle. The airflow channel is connected to the negative pressure device.

2. The cooling device for a CNC flame cutting machine according to claim 1, characterized in that, A second cooling water passage is provided in the left and right halves.

3. The cooling device for a CNC flame cutting machine according to claim 1, characterized in that, The left and right halves are connected to their respective shafts, which are opened and closed by their respective motors.

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