A spray marker gun head with a protection function

Abstract

The utility model relates to the technical field of spraying identification, and disclose a kind of protective function's spray mark gun head, including protective cover and the spray gun main body located in the inboard of the protective cover, the one end of the opening side of the protective cover is equipped with mounting hole, the top of the spray gun main body is equipped with spray nozzle, one end of the spray nozzle extends to the outside of the protective cover through the mounting hole, and the cap for fixing the protective cover on the outside of the spray gun main body is equipped on the spray nozzle. Spray gun main body is located in the inboard of protective cover, and spray nozzle is located outside through protective cover, neither affect spray mark operation, nor can the spray gun main body of spray mark gun head be protected in the process of spray mark, not adhere to mark ink, avoid the necrosis of spray mark component due to paint dry.

Description

Technical Field

[0001] This utility model relates to the field of spray marking technology, specifically to a spray marking gun head with protective function. Background Technology

[0002] In the finishing plant's production process, after the flaw detection equipment inspects the surface of the workpiece, it sends a signal to the marking device at the exit according to the location of the defect, so that the marking device sprays quick-drying marking ink (paint) at the corresponding angle. The next process then grinds the workpiece according to the location of the paint marking.

[0003] Existing marking devices have significant technical defects: due to the viscous and fast-drying nature of the marking ink, and the angled arrangement of multiple spray guns, paint is prone to splattering onto opposite spray guns or dripping into lower spray guns due to excessive flow during spraying. After the paint dries, it sticks to the spray gun components, causing the spray guns to jam or become damaged, requiring frequent repairs or replacements, which not only increases equipment costs but also affects production efficiency.

[0004] There is currently no dedicated protective structure for this scenario in the existing technology. Conventional protective measures (such as regular manual cleaning) cannot solve the problem of paint adhesion at the root, and the maintenance cost is high and the effect is poor. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a spray gun head with a protective function. Its nozzle extends to the outside through the mounting hole to carry out the spraying work, while the spray gun body is covered by a protective cover inside, thereby protecting the spray gun head from the adhesion of marking ink and preventing the spraying parts from malfunctioning due to the drying of the paint.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A protective spray gun head includes a protective cover and a spray gun body located inside the protective cover. The protective cover has a mounting hole at one end opposite to the opening side. A nozzle is mounted on the top of the spray gun body. One end of the nozzle extends through the mounting hole to the outside of the protective cover. A cap is fitted on the nozzle to fix the protective cover to the outside of the spray gun body.

[0008] Optionally, the cap and the nozzle are connected by a threaded connection.

[0009] Optionally, the protective cover has a cuboid structure, with a length of 120mm, a width greater than 70mm, and a height of 200mm.

[0010] Optionally, the protective cover is made of stainless steel.

[0011] Optionally, the mounting hole is located at the center of the bottom of the protective cover, and the inner diameter of the mounting hole is 18mm.

[0012] Optionally, the spray gun body includes a paint spray chamber and an air chamber connected to each other, the nozzle is located at the top of the paint spray chamber, the air chamber is located at the bottom of the paint spray chamber, and both the paint spray chamber and the air chamber are in communication with the nozzle.

[0013] Optionally, the paint spraying chamber has a paint inlet on one side and a cleaning agent inlet on the other side, and both the paint inlet and the cleaning agent inlet are connected to the paint spraying chamber.

[0014] Optionally, a first air inlet valve and a second air inlet valve are provided on the outside of the air chamber, and an adjustment knob for adjusting the internal pressure of the air chamber is provided on one side of the second air inlet valve, and the adjustment knob is located at the bottom of the air chamber.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) In this utility model, the spray gun body is located inside the protective cover, and the nozzle passes through the protective cover and is located outside. This will not affect the spraying operation, and can protect the spray gun body of the spray gun head during the spraying process. The spraying ink will not adhere to it, thus avoiding the damage of the spraying parts caused by the drying of the paint.

[0017] (2) In this utility model, the protective cover is fixed to the spray gun body by a cap, and the cap and the nozzle are connected by a thread, which not only ensures the stability of the protective cover assembly, but also facilitates quick disassembly, greatly improving the efficiency of later maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the spray gun head with protective function in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the protective cover in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the spray gun body in an embodiment of this utility model;

[0021] Figure 4 yes Figure 2 A magnified view of a portion of point A in the middle;

[0022] Figure 5 This is a schematic diagram showing the positions of the protective cover and the spray gun body in an embodiment of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the protective cover in an embodiment of this utility model;

[0024] Among them, 1. Paint spraying tank; 101. Paint import; 102. Cleaning agent import;

[0025] 2. Nozzle; 3. Cap; 4. Protective cover; 401. Mounting hole;

[0026] 5. Air chamber; 501. First air intake valve; 502. Second air intake valve; 503. Adjustment knob;

[0027] 6. Paint feed rate adjustment component. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0029] Example 1, as Figures 1-6 As shown, a protective spray gun head includes a spray gun body, a nozzle 2, a cap 3, and a protective cover 4. The nozzle 2 is fixedly installed on the top of the spray gun body. The protective cover 4 and the cap 3 are sequentially fitted onto the nozzle 2. The cap 3 can fix the protective cover 4 to the spray gun body, that is, the protective cover 4 is located between the cap 3 and the spray gun body, and the spray gun body is located inside the protective cover 4. One end of the nozzle 2 passes through the protective cover 4 and is located on the outside.

[0030] Specifically, the end of nozzle 2 passes through protective cover 4 and cap 3 in sequence to ensure that paint and ink can be smoothly sprayed from the end of nozzle 2. The main body of the spray gun is located inside protective cover 4, and nozzle 2 passes through protective cover 4 and is located on the outside. This not only does not affect the marking operation, but also protects the main body of the spray gun head during the marking process, preventing the marking ink (paint) from adhering to it and avoiding damage to the marking components due to the paint drying out.

[0031] As described above, the protective cover 4 has a mounting hole 401 at one end opposite to the opening side. One end of the nozzle 2 extends through the mounting hole 401 to the outside of the protective cover 4. A cap 3 for fixing the protective cover 4 to the outside of the spray gun body is fitted on the nozzle 2. The protective cover 4 has a hollow cuboid structure with one end open and the other end closed. The open end is the top and the closed end is the bottom. The mounting hole 401 is located at the center of the bottom of the protective cover 4 and is distributed opposite to the opening of the protective cover 4.

[0032] The cap 3 and the nozzle 2 are connected by a threaded connection. After the nozzle 2 passes through the mounting hole 401 of the protective cover 4, the cap 3 is tightened onto the nozzle 2. The cap 3 firmly fixes the inner side of the bottom of the protective cover 4 to the top surface of the spray mark body. The two are in a closed state, and the outer diameter of the bottom of the cap 3 is larger than the inner diameter of the mounting hole 401 to ensure that there is no gap between the two after the assembly is completed, so as to prevent paint from seeping into the inside of the protective cover 4.

[0033] Furthermore, the protective cover 4 can be made of corrosion-resistant materials such as stainless steel, which can withstand long-term erosion by quick-drying paint, greatly improving the service life of the device.

[0034] To ensure that the spray gun body is completely covered, the protective cover 4 is 120mm long, 200mm high, and 70mm wide. The inner diameter of the mounting hole 401 is 18mm, which ensures that the nozzle 2 can pass through and that the cap 3 can completely cover it after being tightened.

[0035] In addition, sealing gaskets can be set on the inner and outer sides of the protective cover 4 to further improve its sealing performance and prevent paint from seeping in through the gaps. The sealing gaskets here are fitted on the nozzle 2, that is, first the sealing gasket is fitted, then the protective cover 4 is fitted, then another sealing gasket is fitted, and finally the cap 3 is fitted to firmly fix the protective cover 4.

[0036] Assembly process of the dart spray gun head:

[0037] First, insert the spray gun body into the opening end of the protective cover 4, so that the nozzle 2 at the top passes through the mounting hole 401 at the bottom of the protective cover 4. Then, screw the cap 3 on the outside of the nozzle 2 from top to bottom until the protective cover 4 is firmly fixed to the spray gun body.

[0038] Example 2, as Figures 1-3 As shown, this utility model also proposes a specific structure for the spray gun body.

[0039] The spray gun body includes a paint spray chamber 1 and an air chamber 5 connected to each other. The nozzle 2 is located at the top of the paint spray chamber 1, and the air chamber 5 is located at the bottom of the paint spray chamber 1. Both the paint spray chamber 1 and the air chamber 5 are connected to the nozzle 2, and the upper part of the air chamber 5 has a notch, at which a paint feed adjustment component 6 is installed.

[0040] The paint spraying chamber 1 has a paint inlet 101 on one side and a cleaning agent inlet 102 on the other side, and both the paint inlet 101 and the cleaning agent inlet 102 are connected to the paint spraying chamber 1; the air chamber 5 has a first air inlet valve 501 and a second air inlet valve 502 on the outside, and a regulating knob 503 for adjusting the internal pressure of the air chamber 5 is provided on one side of the second air inlet valve 502, and the regulating knob 503 is located at the bottom of the air chamber 5.

[0041] As mentioned above, the paint spraying chamber 1 and the air chamber 5 are the core components for the spray gun head to achieve precise and stable spraying. The two work together to allow the spray gun to accurately control the shape and size of the mark by adjusting the flow rate through the paint spraying chamber 1, and to make the mark clear and adhere stably by adjusting the pressure and atomization through the air chamber 5.

[0042] Specifically, the paint spray chamber 1 is a cavity where paint and compressed air are initially mixed. After entering through the paint inlet 101, the paint meets the compressed air delivered through the air chamber 5, forming an air-paint mixture flow, which prepares for subsequent stable spraying. The internal space design (such as cavity volume and channel aperture) in conjunction with the paint feed rate adjustment component 6 can precisely control the paint flow rate and the amount of paint sprayed per burst.

[0043] Air chamber 5 is used for centralized storage, and the pressure inside air chamber 5 is adjusted by adjusting knob 503. Compressed air enters air chamber 5 through first air inlet valve 501 and second air inlet valve 502 to form high-pressure air. After entering the paint spraying chamber 1, the high-pressure air impacts the paint, breaking it into fine droplets. The higher the pressure, the finer the atomization, resulting in more uniform markings and clearer edges during spraying. Among these, air pressure is the power source for paint spraying. The mixed air-paint flow is rapidly sprayed out from nozzle 2 under the high pressure of air chamber 5, ensuring that the paint can accurately adhere to the surface of the workpiece.

[0044] After the marking is completed, when the cleaning agent enters through the cleaning agent inlet 102, the air chamber 5 can continue to provide compressed air to assist the cleaning agent in flowing in the paint spray chamber 1 and nozzle 2, so as to more thoroughly wash away residual paint and prevent drying and clogging.

[0045] The spray gun body, nozzle 2, and cap 3 mentioned above are all existing technologies, and will not be described in detail here.

[0046] In Example 3, based on Example 1, the present invention also proposes a simple protective device. First, a hole with a diameter of 18mm is made at the bottom of an empty bottle (excluding the bottle mouth) with a width greater than 70mm and a length greater than 120mm. Then, the cap 3 of the spray gun head is removed, allowing the spray gun head to pass through the hole at the bottom of the empty bottle. Then, the cap 3 is tightened again to avoid gaps and prevent paint from seeping in.

[0047] In summary, the protective spray gun head proposed in this utility model, through the protective cover 4 adapted to the gun head structure, utilizes the mounting hole 401 and the cap 3 for a seamless connection, combined with the reasonable bottom size to cover the spray splash range, selects corrosion-resistant materials, and features smooth through holes and a detachable design to form physical anti-splash, thereby solving the problem of paint splashing and dripping onto the gun head from the root, effectively preventing the spray gun from jamming and being damaged, and significantly reducing equipment failure rate and maintenance costs, demonstrating significant practical value.

[0048] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A spray gun head with protective function, characterized in that: The device includes a protective cover and a spray gun body located inside the protective cover. The protective cover has a mounting hole at one end opposite to the opening side. A nozzle is mounted on the top of the spray gun body. One end of the nozzle extends through the mounting hole to the outside of the protective cover, and a cap is fitted on the nozzle to fix the protective cover to the outside of the spray gun body.

2. The spray gun head with protective function according to claim 1, characterized in that: The cap and the nozzle are connected by a threaded connection.

3. The spray gun head with protective function according to claim 1, characterized in that: The protective cover has a cuboid structure, with a length of 120mm, a width greater than 70mm, and a height of 200mm.

4. The spray gun head with protective function according to claim 3, characterized in that: The protective cover is made of stainless steel.

5. The spray gun head with protective function according to claim 3, characterized in that: The mounting hole is located at the center of the bottom of the protective cover, and the inner diameter of the mounting hole is 18mm.

6. The spray gun head with protective function according to claim 1, characterized in that: The spray gun body includes a paint spray chamber and an air chamber connected to each other. The nozzle is located at the top of the paint spray chamber, and the air chamber is located at the bottom of the paint spray chamber. Both the paint spray chamber and the air chamber are connected to the nozzle.

7. The spray gun head with protective function according to claim 6, characterized in that: The paint spraying chamber has a paint inlet on one side and a cleaning agent inlet on the other side, and both the paint inlet and the cleaning agent inlet are connected to the paint spraying chamber.

8. The spray gun head with protective function according to claim 7, characterized in that: The outer side of the air chamber is provided with a first air inlet valve and a second air inlet valve. A regulating knob for adjusting the internal pressure of the air chamber is provided on one side of the second air inlet valve, and the regulating knob is located at the bottom of the air chamber.

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