Oil sprayer of bolt cleaning machine

Abstract

The utility model discloses an oil sprayer of a gun cleaning machine, which comprises an oil spray nozzle and a control valve, a feed pipe of the oil spray nozzle is connected with the oil spray nozzle after passing through the control valve, and the feed pipe comprises an oil branch and a gas branch; the oil nozzle comprises an air inlet cavity, an oil channel and a mixing cavity, the outlet end of the oil channel is communicated with the mixing cavity, the inlet end of the oil channel is communicated with the oil branch, and oil passes through the control valve and then enters the mixing cavity through the oil channel; the outlet end of the air inlet cavity is communicated with the mixing cavity, the inlet end of the air inlet cavity is communicated with the air branch, flowing compressed air enters the air inlet cavity through the control valve and then is exhausted through the mixing cavity, and after flowing compressed air enters the mixing cavity, the air inlet end of the air inlet cavity is communicated with the air branch. Oil in the mixing cavity is conveyed to the oil spraying opening through the siphon principle to be sprayed out and form vaporific lubricating agents, the control valve and the oil spraying nozzle are improved, two-stage control over the oil and air is achieved, and the oil spraying effect is improved.

Description

Technical Field

[0001] The utility model relates to a component of a gun cleaning machine, in particular to an oil sprayer for a gun cleaning machine. Background Art

[0002] As an auxiliary equipment for welding robots, the intelligent gun cleaner plays an important role in robot automated welding. It is mainly used to clean the flying objects stuck in the gas shield of the welding gun during the automatic welding process of the robot, ensuring long-term unobstructed gas flow, effectively blocking air from entering the welding area, protecting the welding pool and improving the quality of the weld. It can effectively clean the dust accumulated by welding smoke on the conductive nozzle, dredge and clean the protective gas outlet holes on the connecting pipe, spray the protective cover with high temperature resistant anti-blocking agent, reduce the dead adhesion of welding slag to the gun cover and gun nozzle, and increase durability.

[0003] After the welding gun is cleaned and blown, it needs to be sprayed with oil. However, the oil sprayer of the traditional gun cleaning machine has the following disadvantages:

[0004] Since the oil-gas mixing ratio is regulated and controlled in a first-level coarse manner, the compressed air and oil are throttled by the ordinary throttle valve and then mixed and sprayed out of the nozzle, resulting in the spray oil atomization presenting larger particles and poor atomization effect, which leads to poor lubrication and anti-blocking effect on the welding gun protective cover, causing the welding slag to adhere firmly to the inner wall of the protective cover, thereby reducing the durability and service life of the welding gun protective cover and the conductive nozzle, and affecting the welding process and quality. At the same time, due to the firm adhesion of the welding slag, it is difficult to clean and remove the slag of the gun cleaning reamer, and the overload work leads to a high failure rate of the reamer and a shortened service life. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a gun cleaning machine oil injector, which realizes two-level control of oil and air by improving the control valve and the oil spray nozzle, improves the oil spray effect, thereby increasing the service life of the welding gun protective cover, conductive nozzle, and gun cleaning reamer, and significantly improving the stability of the welding process and the quality assurance capability.

[0006] Specifically, a gun cleaning machine oil injector comprises an oil injection nozzle and a control valve, wherein the oil injection nozzle is connected to the control valve through a feed pipe, and the feed pipe comprises an oil branch and a gas branch;

[0007] The fuel injection nozzle comprises an air intake chamber, a fuel passage and a mixing chamber.

[0008] The outlet end of the oil passage is connected to the mixing chamber, while the inlet end is connected to the oil branch, and the oil passes through the control valve and enters the mixing chamber through the oil passage;

[0009] The outlet end of the air inlet chamber is connected to the mixing chamber, and the inlet end is connected to the gas branch. The flowing compressed air first enters the air inlet chamber through the control valve and then is discharged through the mixing chamber. After the flowing compressed air enters the mixing chamber, the oil in the mixing chamber is sent to the oil injection port through the siphon principle and sprayed out to form a mist lubricant.

[0010] Optionally, the fuel injector includes

[0011] A fuel injection block, a valve core and a pressing block, wherein the valve core is installed in the fuel injection block through the pressing block;

[0012] A mixing chamber is provided at the front of the fuel injection block, and the discharge end of the mixing chamber is a fuel injection port;

[0013] The valve core has an axial oil passage extending into the mixing chamber, the oil passage is in communication with the mixing chamber, the valve core and the inner wall of the fuel injection block have an air inlet chamber, the air inlet chamber is located at the feed end of the mixing chamber and is in communication with the mixing chamber, the valve core is provided with a plurality of gas passages arranged circumferentially with the oil passage as the axis, the outlet of the gas passage is in communication with the air inlet chamber;

[0014] The clamping block is connected to the fuel injection block by a threaded connection and is sealed by a sealing ring. The oil branch of the feed pipe is connected to the oil channel of the valve core, and the gas branch is connected to the gas channel.

[0015] Optionally, the oil branch and the gas branch are coaxial, and the oil branch is located inside the gas branch.

[0016] Optionally, the air inlet cavity is formed by a conical surface at the front of the valve core and an inner wall surface of the fuel injection block, and is located at the periphery of the oil channel.

[0017] Optionally, the control valve includes

[0018] The housing has an oil cavity and a gas cavity, wherein the oil cavity is provided with an oil joint, and the gas cavity is provided with a gas joint;

[0019] an oil valve, acting on the oil chamber, and

[0020] a gas valve, acting on the gas chamber;

[0021] The oil in the oil cavity and the gas in the gas cavity are connected to the feed pipe through an external joint after being controlled. The external joint includes a gas flow channel and an oil flow channel. The gas flow channel is connected to the gas branch, and the oil flow channel is connected to the oil branch.

[0022] The utility model has the following advantages:

[0023] The utility model performs two-stage control on oil and compressed air. The first-stage control is to improve the control valve, integrate the high-precision compressed air needle valve throttling and the oil needle throttling valve throttling into a valve body to pre-adjust the oil-gas mixing ratio. After pre-adjustment, the compressed air and oil enter the second-stage control, which is to improve the fixed nozzle and perform two-stage fine proportioning of oil and gas on demand in the nozzle mixing chamber; after the above improvements and two-stage control, the oil spray atomization effect is significantly improved, the service life of the welding gun protective cover, conductive nozzle, and gun cleaning reamer is greatly increased by more than 20%, and the welding process stability and quality assurance capabilities are significantly improved.

[0024] It is better to spray the welding gun protective cover with high temperature resistant anti-blocking agent to reduce the adhesion of welding slag, eliminate the dead adhesion to the gun cover and gun nozzle, and increase durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 It is a three-dimensional schematic diagram of the fuel injection nozzle of the utility model;

[0027] Figure 3 It is a transverse schematic diagram of the fuel injection nozzle of the utility model;

[0028] Figure 4 yes Figure 3 Schematic diagram of the cross-section of the BB ( Figure 4 The solid line with an arrow is the gas flow direction, and the dotted line with an arrow is the oil flow direction);

[0029] Figure 5 This is a schematic diagram of the valve core and the clamping block in the disassembled state;

[0030] Figure 6 is a schematic diagram of the three-dimensional structure of the valve core ( Figure 6 The solid line with an arrow is the gas flow direction, and the dotted line with an arrow is the oil flow direction);

[0031] Figure 7 is a schematic diagram of the three-dimensional structure of the control valve;

[0032] Figure 8 is a schematic side view of the control valve;

[0033] Fig. 9 yes Figure 8 Schematic cross-sectional view of AA in the figure;

[0034] Fig.10 is a schematic top view of the control valve;

[0035] Fig.11 yes Fig.10Schematic cross-sectional view of AA in the figure;

[0036] Fig.12 is a schematic cross-sectional view of the feed pipe;

[0037] In the figure: 100, fuel injection nozzle; 101, fuel injection block; 1011, mixing chamber; 1012, air intake chamber; 102, valve core; 1021, cone surface; 1022, gas channel; 1023, convex part; 1024, fuel channel; 103, pressing block; 104, sealing ring;

[0038] 200, feed pipe; 201, oil branch; 202, gas branch;

[0039] 300, control valve; 301, housing; 302, oil connector; 303, gas connector; 304, external connector; 305, oil valve; 306, gas valve; 307, oil external connector; 3071, oil cavity; 3072, gas cavity. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0041] In this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0042] As described in the background technology, since the oil-gas mixture ratio is regulated and controlled in a primary rough manner, the compressed air and oil are throttled by the ordinary throttle valve and then mixed and sprayed out of the nozzle, resulting in the spray oil atomization presenting larger particles and poor atomization effect, which leads to poor lubrication and anti-blocking effect on the welding gun protective cover, resulting in the welding slag firmly adhering to the inner wall of the protective cover, thereby reducing the durability and service life of the welding gun protective cover and the conductive nozzle, and affecting the welding process and quality. At the same time, due to the firm adhesion of the welding slag, it is difficult to clean and remove the slag of the cleaning gun reamer, and the overload work leads to a high failure rate of the reamer and a shortened service life.

[0043] Therefore, in order to overcome the above problems, Figure 1-Figure 12As shown, this embodiment provides a gun cleaning machine oil injector, including an oil injector 100 and a control valve 300, wherein the oil injector 100 is connected to the control valve 300 through a feed pipe 200, and the feed pipe 100 includes an oil branch 201 and a gas branch 202 (such as Fig.12 shown);

[0044] The fuel injection nozzle includes an air intake chamber 1012, a fuel channel 1024 and a mixing chamber 1011.

[0045] The outlet end of the oil channel 1024 is connected to the mixing chamber 1011, and the inlet end is connected to the oil branch 201. After passing through the control valve 300, the oil enters the mixing chamber 1011 through the oil channel 1024.

[0046] The outlet end of the air inlet chamber 1012 is connected to the mixing chamber 1011, and the inlet end is connected to the gas branch 202. The flowing compressed air first enters the air inlet chamber 1012 through the control valve and then is discharged through the mixing chamber 1011. After the flowing compressed air enters the mixing chamber 1011, the oil in the mixing chamber is sent to the oil injection port through the siphon principle and sprayed out to form a mist lubricant.

[0047] The above technical features can realize the spraying of oil in mist form through the improvement of the oil injection nozzle. During the discharge of compressed air from the nozzle, the oil discharged into the mixing chamber is discharged by the principle of siphon. When discharged, the oil is discharged in a jet manner, so that the oil is formed into mist lubricant under the action of compressed air and acts on the welding gun; thereby improving the oil injection effect.

[0048] In order to improve the uniformity of oil discharge, Figure 4-Figure 6 As shown, in one embodiment, the fuel injector includes

[0049] A fuel injection block 101, a valve core 102 and a pressing block 103, wherein the valve core is installed in the fuel injection block through the pressing block;

[0050] The front part of the fuel injection block is provided with a mixing chamber 1011, and the discharge end of the mixing chamber 1011 is a fuel injection port;

[0051] The valve core has an axial oil passage 1024 (such as Figure 6 As shown, the oil passage is extended to the mixing chamber by inserting a cylindrical protrusion 1023 into the mixing chamber), the oil passage 1024 is communicated with the mixing chamber 1011, the valve core and the inner wall of the fuel injection block have an air intake chamber 1012, the air intake chamber is located at the feed end of the mixing chamber 1011 and is communicated with the mixing chamber 1011, the valve core is provided with a plurality of gas passages 1022 arranged circumferentially with the oil passage as the axis, and the outlet of the gas passage is communicated with the air intake chamber 1012;

[0052] The clamping block 103 is connected to the fuel injection block 101 by a threaded connection, the valve core is clamped into the fuel injection block in a clamping manner, and a sealing ring 104 is used to seal the clamping block and the fuel injection block. The oil branch of the feed pipe is connected to the oil channel of the valve core, and the gas branch is connected to the gas channel.

[0053] In the above technical features, by setting an air inlet cavity and evenly setting several gas channels, the gas can be evenly located on the periphery of the oil channel, so that the gas wraps the oil and enters the mixing cavity, thereby improving the mixing degree of the gas and the oil, thereby ensuring that the particle size of the discharged oil is smaller, improving the atomization effect of the oil, and improving the oil spraying effect of the nozzle on the welding gun.

[0054] In order to make the whole structure compact, in one embodiment, as Fig.12 As shown, the oil branch 201 and the gas branch 202 are coaxial, and the oil branch is located inside the gas branch. This technical feature makes the overall structure more compact and avoids too many pipelines being exposed.

[0055] In order to allow the gas to better wrap the oil, in one embodiment, the air inlet cavity is formed by the front part of the valve core with a conical surface 1021 and the inner wall surface of the oil injection block, and is located outside the oil channel. This technical feature can improve the mixing degree of the oil and compressed air, and the conical surface can better allow the gas to enter the mixing cavity in a uniform injection manner, so that the oil atomization effect is better.

[0056] In order to control the amount of oil and compressed air entering the mixing chamber, Figure 7-Figure 11 As shown, in one embodiment, the control valve 300 includes

[0057] The housing 301 has an oil chamber 3071 and a gas chamber 3072. The oil chamber is provided with an oil joint 302, and the gas chamber is provided with a gas joint 303. The oil chamber is connected to the oil branch 201 through an oil external joint 307.

[0058] The oil valve 305 acts on the oil chamber, and

[0059] A gas valve 306, acting on the gas chamber;

[0060] Preferably, the oil valve and the gas valve are needle valves;

[0061] The oil in the oil cavity and the gas in the gas cavity are connected to the feed pipe through an external joint 304 after being controlled. The external joint includes a gas flow channel and an oil flow channel. The gas flow channel is connected to the gas branch, and the oil flow channel is connected to the oil branch.

[0062] The above technical features improve the valve and realize the control of the oil volume and compressed air volume, so as to achieve the best ratio of gas to oil in the mixing chamber, thereby improving the atomization effect of the oil and enhancing the injection effect.

[0063] The utility model performs two-stage control on oil and compressed air. The first-stage control is to improve the control valve, integrate the high-precision compressed air needle valve throttling and the oil needle throttling valve throttling into a valve body to pre-adjust the oil-gas mixing ratio. After pre-adjustment, the compressed air and oil enter the second-stage control, which is to improve the fixed nozzle and perform two-stage fine proportioning of oil and gas on demand in the nozzle mixing chamber; after the above improvements and two-stage control, the oil spray atomization effect is significantly improved, the service life of the welding gun protective cover, conductive nozzle, and gun cleaning reamer is greatly increased by more than 20%, and the welding process stability and quality assurance capabilities are significantly improved.

[0064] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gun cleaning oil injector, characterized in that: It includes a fuel injection nozzle and a control valve, wherein the fuel injection nozzle is connected to the control valve through a feed pipe, and the feed pipe includes a fuel branch and a gas branch; The fuel injection nozzle comprises an air intake chamber, a fuel passage and a mixing chamber. The outlet end of the oil passage is connected to the mixing chamber, while the inlet end is connected to the oil branch, and the oil passes through the control valve and enters the mixing chamber through the oil passage; The outlet end of the air inlet chamber is connected to the mixing chamber, and the inlet end is connected to the gas branch. The flowing compressed air first enters the air inlet chamber through the control valve and then is discharged through the mixing chamber. After the flowing compressed air enters the mixing chamber, the oil in the mixing chamber is sent to the oil injection port through the siphon principle and sprayed out to form a mist lubricant.

2. According to claim 1, the oil sprayer for gun cleaning machine is characterized in that: The fuel injection nozzle comprises A fuel injection block, a valve core and a pressing block, wherein the valve core is installed in the fuel injection block through the pressing block; A mixing chamber is provided at the front of the fuel injection block, and the discharge end of the mixing chamber is a fuel injection port; The valve core has an axial oil passage extending into the mixing chamber, the oil passage is in communication with the mixing chamber, the valve core and the inner wall of the fuel injection block have an air inlet chamber, the air inlet chamber is located at the feed end of the mixing chamber and is in communication with the mixing chamber, the valve core is provided with a plurality of gas passages arranged circumferentially with the oil passage as the axis, the outlet of the gas passage is in communication with the air inlet chamber; The clamping block is connected to the fuel injection block by a threaded connection and is sealed by a sealing ring. The oil branch of the feed pipe is connected to the oil channel of the valve core, and the gas branch is connected to the gas channel.

3. According to claim 2, the oil sprayer for gun cleaning machine is characterized in that: The oil branch and the gas branch are coaxial, and the oil branch is located inside the gas branch.

4. The gun cleaning oil injector according to claim 2, characterized in that: The air inlet cavity is formed by the conical surface of the front part of the valve core and the inner wall surface of the oil injection block, and is located at the periphery of the oil channel.

5. The gun cleaning oil injector according to claim 1, characterized in that: The control valve comprises The housing has an oil cavity and a gas cavity, wherein the oil cavity is provided with an oil joint, and the gas cavity is provided with a gas joint; an oil valve, acting on the oil chamber, and a gas valve, acting on the gas chamber; The oil in the oil cavity and the gas in the gas cavity are connected to the feed pipe through an external joint after being controlled. The external joint includes a gas flow channel and an oil flow channel. The gas flow channel is connected to the gas branch, and the oil flow channel is connected to the oil branch.

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