阅读说明：本技术 Nxt工作头真空检测装置 (NXT working head vacuum detection device ) 是由 胡湘洋 龚乾 陈秀林 于 2021-01-05 设计创作，主要内容包括：本发明公开了NXT工作头真空检测装置,包括：总进气管、气路切换机构、真空发生器、三通气管接头、正/负压输出端；所述总进气管与所述气路切换机构相连接,所述气路切换机构将总进气管输入的压缩空气切换分出两路正气压,其中,一路正压通过第一正压气管与所述真空发生器的输入端相连接,所述真空发生器的输出端与所述三通气管接头的一端相连接；另一路正压通过第二正压气管与所述三通气管接头的另一端相连接,所述三通气管接头的输出端与所述正/负压输出端相连接。通过上述方式,本发明提供的NXT工作头真空检测装置,在总进气管的气路上安装气路切换开关、真空发生器、单向阀,通过切换可以实现同一端口输出正/负气压。(The invention discloses a NXT working head vacuum detection device, comprising: the device comprises a main air inlet pipe, an air path switching mechanism, a vacuum generator, a three-way air pipe joint and a positive/negative pressure output end; the main air inlet pipe is connected with the air path switching mechanism, the air path switching mechanism switches compressed air input by the main air inlet pipe into two paths of positive air pressure, wherein one path of positive pressure is connected with the input end of the vacuum generator through a first positive pressure air pipe, and the output end of the vacuum generator is connected with one end of the three-way air pipe joint; the other positive pressure is connected with the other end of the three-way air pipe joint through a second positive pressure air pipe, and the output end of the three-way air pipe joint is connected with the positive/negative pressure output end. Through the mode, the NXT working head vacuum detection device provided by the invention is characterized in that the air path change-over switch, the vacuum generator and the one-way valve are arranged on the air path of the main air inlet pipe, and the positive/negative air pressure output by the same port can be realized through switching.)

An NXT working head vacuum detection device, characterized in that, comprising: the device comprises a main air inlet pipe, an air path switching mechanism, a vacuum generator, a three-way air pipe joint and a positive/negative pressure output end; the main air inlet pipe is connected with the air path switching mechanism, the air path switching mechanism switches compressed air input by the main air inlet pipe into two paths of positive air pressure, wherein one path of positive pressure is connected with the input end of the vacuum generator through a first positive pressure air pipe, and the output end of the vacuum generator is connected with one end of the three-way air pipe joint; the other positive pressure is connected with the other end of the three-way air pipe joint through a second positive pressure air pipe, and the output end of the three-way air pipe joint is connected with the positive/negative pressure output end.

2. The NXT working head vacuum detection device as claimed in claim 1, wherein the air path switching mechanism is an air path switch.

3. The NXT working head vacuum detection device as claimed in claim 1, wherein a one-way valve is installed on a second positive pressure air pipe of the other positive pressure of the air passage switching mechanism.

4. The NXT working head vacuum detection device as recited in claim 3, wherein the check valve is a two-way check valve.

Technical Field

The invention relates to the technical field of SMT (surface mount technology) surface mount equipment, in particular to a NXT working head vacuum detection device.

Background

The working head maintenance platform is externally connected with an air pipe and is used for feeding air pressure of 0.5Mpa, each Syring (rod) of the working head is blown and cleaned, the working head can only be maintained, and the first prior art has the defects that:

1. the function is single, and the working head can only be maintained and cleaned to perform the blowing action;

2. the maintained working head needs to be installed on a machine, a signal switch of a vacuum pump of the machine is controlled through the special FUJI software, the vacuum pump is turned on to detect the vacuum degree, the operation is complicated, and the efficiency of maintaining the working head is influenced.

Disclosure of Invention

The invention mainly solves the technical problem of providing the NXT working head vacuum detection device.A gas path change-over switch, a vacuum generator and a one-way valve are arranged on a gas path of a main gas inlet pipe, positive/negative gas pressure can be output from the same port through switching, the negative pressure and the positive pressure use the same gas inlet, and the original positive pressure is not influenced under the condition of adding a negative pressure device.

In order to solve the technical problems, the invention adopts a technical scheme that: providing an NXT working head vacuum detection device, comprising: the device comprises a main air inlet pipe, an air path switching mechanism, a vacuum generator, a three-way air pipe joint and a positive/negative pressure output end; the main air inlet pipe is connected with the air path switching mechanism, the air path switching mechanism switches compressed air input by the main air inlet pipe into two paths of positive air pressure, wherein one path of positive pressure is connected with the input end of the vacuum generator through a first positive pressure air pipe, and the output end of the vacuum generator is connected with one end of the three-way air pipe joint; the other positive pressure is connected with the other end of the three-way air pipe joint through a second positive pressure air pipe, and the output end of the three-way air pipe joint is connected with the positive/negative pressure output end.

In a preferred embodiment of the present invention, the air path switching mechanism is an air path switch.

In a preferred embodiment of the present invention, a one-way valve is installed on the second positive pressure air pipe of the other positive pressure of the air passage switching mechanism.

In a preferred embodiment of the present invention, the check valve is a two-way check valve.

The invention has the beneficial effects that: the NXT working head vacuum detection device of the invention is characterized in that an air path change-over switch, a vacuum generator and a one-way valve are arranged on an air path of a main air inlet pipe, positive/negative air pressure can be output from the same port through switching, the negative pressure and the positive pressure use the same air inlet, under the condition of adding a negative pressure device,

the original positive pressure is not affected.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is a gas circuit diagram of the positive/negative air pressure switching of the NXT working head vacuum detection device of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention is: NXT working head vacuum detection device includes: the device comprises a main air inlet pipe 1, an air path switching mechanism 2, a vacuum generator 3, a three-way air pipe joint 4 and a positive/negative pressure output end 5; the main air inlet pipe is connected with the air path switching mechanism, the air path switching mechanism switches compressed air input by the main air inlet pipe into two paths of positive air pressure, wherein one path of positive pressure is connected with the input end of the vacuum generator through a first positive pressure air pipe 7, and the output end of the vacuum generator is connected with one end of the three-way air pipe joint; the other positive pressure is connected with the other end of the three-way air pipe joint through a second positive pressure air pipe 8, and the output end of the three-way air pipe joint is connected with the positive/negative pressure output end.

Specifically, the gas circuit switching mechanism is a gas circuit switching switch, a one-way valve 6 is installed on a second positive pressure gas pipe of another positive pressure of the gas circuit switching mechanism, and the one-way valve is a two-way one-way valve and can prevent negative pressure leakage.

Description of the working principle:

a) the compressed air enters the gas circuit switch and then is divided into two paths of positive air pressure;

b) one positive air pipe on the air path switch is provided with a one-way valve (preventing negative pressure leakage) and is connected with one end of the three-air-pipe joint;

c) the other path of positive pressure on the gas path change-over switch is connected to the input end of a vacuum generator, and the output end of the vacuum generator is connected to the other end of the three-way gas pipe joint;

d) if positive pressure is needed, the gas path change-over switch is toggled to the positive pressure, namely the output of the positive/negative pressure output end is the positive pressure;

e) if negative pressure is needed, the air path change-over switch is toggled to be positive pressure, namely, the output of the positive/negative pressure output end is negative pressure.

In summary, the NXT working head vacuum detection device provided by the invention has the advantages that the air path change-over switch, the vacuum generator and the one-way valve are arranged on the air path of the main air inlet pipe, and the same end can be realized through the change-over

The port outputs positive/negative air pressure, the negative pressure and the positive pressure use the same air inlet, and the original positive pressure is not influenced under the condition of adding the negative pressure device.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.