Negative pressure spray cooling device for tool bar heating machine

Abstract

A negative pressure spray cooling device for a tool holder heating machine, particularly referring to the use of high-speed flowing gas to generate negative pressure adsorption, thereby atomizing and spraying cooling water onto the tool holder after heating and assembling the tool, so that the mating hole of the tool is tightly bonded to the tool due to thermal expansion and contraction, is characterized by the following:

Claims

1. A negative pressure spray cooling device for a tool bar heating machine, comprising: The machine body comprises a machine base, a lifting device, and a negative pressure spray cooling device. The machine base has a tool holder for inserting a tool. A hollowed-out base surrounds the tool holder. A guide rail is erected on one side of the machine base corresponding to the upper part of the tool holder. A hollowed-out top cover is located on the guide rail corresponding to the base. The top cover has a slider pivotally mounted on the guide rail. A lifting device is located at one end of the slider, which controls the top cover to slide up and down, closing and sealing it to the base. A negative pressure spray cooling device is located at the center of the top surface of the top cover. A cooling water tank is located at the bottom of the machine body. A cooling pipe extends upward from the cooling water tank. A connecting pipe is connected to the cooling pipe at the center of the top surface of the top cover. A water inlet pipe and an air inlet pipe are located inside the cooling pipe and the connecting pipe. One end of the water inlet pipe is connected to the cooling water tank, and one end of the air inlet pipe is connected to an air compressor. A Venturi tube is obliquely connected to the corresponding ends of the water inlet pipe and the air inlet pipe. The high-speed air flow in the air inlet pipe generates a negative pressure adsorption effect to atomize the cooling water in the water inlet pipe. A plurality of water return holes are provided at the top of the cooling water tank to allow water to flow back to the cooling water tank.

2. The negative pressure spray cooling device for the tool bar heating machine as described in claim 1, wherein: The lifting device has a base and a cover. The cover is locked onto the slider. The base has two braking elements. Each braking element has a screw hole for locking a screw. One end of the screw is connected to a handle. By using the handle to screw the screw, the two braking elements are clamped and fixed to the guide rail.

3. The negative pressure spray cooling device for the tool holder heating machine as described in claim 1, wherein: The diameter of the Venturi tube is half the diameter of the intake pipe.

4. The negative pressure spray cooling device for the tool holder heating machine as described in claim 1, wherein: The angle between the Venturi tube and the intake pipe is 15° to 30°.

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