A spray pattern mechanical switching assembly for a spray gun

Abstract

A kind of spray mode mechanical switching assembly for spray gun, including spray gun connecting piece, spray gun connecting piece is rotatably connected with mechanical switching assembly by a communicating pipe, a rotating member is covered outside the mechanical switching assembly, a nozzle connecting piece is provided with the mechanical switching assembly one end and is connected with communicating pipe, mechanical switching assembly includes first elastic sheet passing on communicating pipe, second elastic sheet is arranged on the side of first elastic sheet and limiting sheet is arranged on the side of second elastic sheet, first clamping block is arranged on the side of limiting sheet, second clamping block is arranged on the side of the first clamping block, at least two limiting grooves are provided on the outside of limiting sheet;Rotating member inside is provided with at least one limiting block, spray gun connecting piece and nozzle connecting piece are communicated by communicating pipe, when the rotating mechanical switching assembly of rotating member cooperation communicating pipe is switched to carry out the switching of spray gun spray mode, convex block slides into slot will issue mechanical touch sound, not only it is convenient to judge whether gear is in place, also significantly improve the accuracy and stability of operation.

Description

Technical Field

[0001] This utility model relates to the technical field of spray gun nozzles, and specifically to a spray mode mechanical switching component for a spray gun. Background Technology

[0002] The advantages of existing airless spray gun technology are mainly reflected in high spraying efficiency, high paint utilization, strong adaptability, and good coating quality. Its spray flow rate is large, with a construction efficiency approximately three times that of air spraying. It also minimizes paint rebound, reducing spray marks caused by paint mist dispersion and improving paint utilization and coating quality. Furthermore, airless spray guns can spray both high and low viscosity paints, making them particularly suitable for high-solids, high-viscosity paints. A single spray coat produces a thicker layer, reducing the number of coats and shortening the construction cycle. Simultaneously, because the paint does not mix with oil, water, or other impurities from compressed air during the spraying process, it eliminates paint film defects caused by moisture, oil, dust, etc., in compressed air, resulting in excellent coating adhesion, even in gaps and corners.

[0003] However, as disclosed in patent US20130233945A1, an airless spray gun provides an indexing mechanism for an airless spray gun. The indexing device of the present invention enables the top protection device of the spray gun to rotate relative to the frame of the spray gun in 90-degree increments without loosening the fixing nut of the end cover; however, this indexing mechanism cannot accurately determine whether the gear has been rotated to the correct position and has poor gear adjustment accuracy. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a mechanical switching component for spray guns. When the mechanical switching component is rotated by a rotating part in conjunction with a connecting pipe to switch the spray gun spray mode, the elastic rebound force of the first elastic block and the second elastic block causes the protrusion of the first locking block to slide into the groove of the second locking block and make a mechanical contact sound. This not only makes it easier for users to judge whether the setting is in place when adjusting the nozzle angle or flow rate during use, but also significantly improves the accuracy and stability of operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A spray mode mechanical switching assembly for a spray gun includes a spray gun connector, which is rotatably connected to the mechanical switching assembly via a connecting pipe. The mechanical switching assembly is used to adjust the spray mode. A rotating member is encased around the mechanical switching assembly, which cooperates with the connecting pipe to rotate the mechanical switching assembly and switch the spray gun spray mode. A nozzle connector is provided at one end of the mechanical switching assembly and is connected to the connecting pipe for connecting a nozzle. The mechanical switching assembly includes a first spring plate passing through the connecting pipe and a second spring plate located on one side of the first spring plate. The device includes a limiting piece on one side of the second spring, a first locking block on one side of the limiting piece, and a second locking block on one side of the first locking block. The first spring cooperates with the second spring to limit the limiting piece, the limiting piece cooperates with the rotating component to limit the first locking block, and the second locking block cooperates with the spray gun connector to limit the first locking block. The outer side of the limiting piece has at least two limiting grooves; the inner side of the rotating component has at least one limiting block, which cooperates with the limiting grooves of the limiting piece to limit the first locking block. The spray gun connector and the nozzle connector are connected by a connecting pipe.

[0007] The rotating component has a slot on its outer side, a first spring component is provided in the slot, a positioning ring is provided on one side of the first spring component, and a limiting pin is provided between the nozzle connector and the rotating component. The slot is used to cooperate with the first spring component to limit the positioning ring, the positioning ring is used to limit the limiting pin, and the limiting pin is used to cooperate with the rotating component to limit the nozzle connector.

[0008] The first card block has at least four slots on one side, and the second card block has at least four protrusions on one side that cooperate with the slots. The protrusions are used to switch the spray mode with the slots of the first card block when the rotating component drives the limiting plate to rotate.

[0009] The outer side of the first card block is provided with at least two first protrusions, which are used to cooperate with the limiting groove of the limiting piece to limit the first card block.

[0010] The second block has at least two second protrusions on its outer side and at least two connecting grooves on one side of the spray gun connector that match and connect with the second protrusions of the second block. The second protrusions are used to limit the second block by cooperating with the connecting grooves of the spray gun connector.

[0011] The first elastic piece has an outwardly protruding first elastic block on one side, and a second elastic block is provided on the side of the second elastic piece opposite to the first elastic block of the first elastic piece. The first elastic block is used to cooperate with the second elastic block to maintain elastic deformation.

[0012] The beneficial effects of this utility model are as follows: By rotating the mechanical switching component and the nozzle connector, the spray mode can be switched. When the protrusion slides out of the slot, a gap is generated between the first and second locking blocks, which pushes the limiting plate to squeeze the second spring plate, causing the first and second spring plates to compress and deform. After the spray mode is adjusted, the protrusion is aligned with the slot position. Through the elastic rebound force of the first and second elastic blocks, the protrusion slides into the slot and makes a mechanical contact sound. It is easy to judge whether the spray mode is adjusted in place by mechanical feel and sound, which improves the flexibility and ease of operation of the spray gun. Attached Figure Description

[0013] Figure 1 This is a 1 / 4 cross-sectional view of the present invention.

[0014] Figure 2 This is an exploded schematic diagram of this utility model.

[0015] Figure 3 This is one of the assembly diagrams of the rotating component and the first and second locking blocks of this utility model.

[0016] Figure 4 This is the second assembly diagram of the rotating component of this utility model with the first and second locking blocks.

[0017] Figure 5 This is a schematic diagram of the rotating component of this utility model.

[0018] Explanation of icon numbers:

[0019] 1-Spray gun connector, 10-Connecting groove, 2-Connecting pipe, 3-Mechanical switching component, 30-First spring, 300-First elastic block, 31-Second spring, 310-Second elastic block, 32-Limiting piece, 320-Limiting groove, 33-First locking block, 330-Gate, 331-First protrusion, 34-Second locking block, 340-Protrusion, 341-Second protrusion, 4-Rotating component, 40-Limiting block, 41-Card groove, 5-First spring component, 6-Positioning ring, 7-Limiting pin, 8-Nozzle connector. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] like Figure 1-5As shown, this utility model relates to a spray mode mechanical switching assembly for a spray gun, including a spray gun connector 1. The spray gun connector 1 is rotatably connected to a mechanical switching assembly 3 via a connecting pipe 2. The mechanical switching assembly 3 is used to adjust the spray mode. A rotating member 4 is wrapped around the mechanical switching assembly 3. The rotating member 4 is used to cooperate with the connecting pipe 2 to rotate the mechanical switching assembly 3 to switch the spray gun spray mode. A nozzle connector 8 is provided at one end of the mechanical switching assembly 3 and is connected to the connecting pipe 2. The nozzle connector 8 is used to connect... The nozzle; the mechanical switching assembly 3 includes a first spring plate 30 passing through the connecting pipe 2, a second spring plate 31 disposed on one side of the first spring plate 30, a limiting plate 32 disposed on one side of the second spring plate 31, a first locking block 33 disposed on one side of the limiting plate 32, and a second locking block 34 disposed on one side of the first locking block 33. The first spring plate 30 cooperates with the second spring plate 31 to limit the limiting plate 32, the limiting plate 32 cooperates with the rotating member 4 to limit the first locking block 33, and the second locking block 34 cooperates with the spray gun connector 1 to... The first locking block 33 is used for limiting, and the outer side of the limiting plate 32 is provided with at least two limiting grooves 320; the inner side of the rotating part 4 is provided with at least one limiting block 40, which is used to cooperate with the limiting groove 320 of the limiting plate 32 to limit the first locking block 33; the spray gun connector 1 and the nozzle connector 8 are connected through the connecting pipe 2. When the mechanical switching assembly 3 is assembled, the first spring plate 30 is inserted into the rotating part 4 along the connecting pipe 2, and then the second spring plate 31 is put in. After that, the limiting plate 32 is inserted along the connecting pipe 2 to synchronize the first locking block 33. Insert and connect with the limiting groove 320 of the limiting piece 32, and connect the second locking block 34 with the connecting groove 10 of the spray gun connector 1. Insert the spray gun connector 1 along the connecting pipe 2, and rotate the spray gun connector 1 to lock one end of the connecting pipe 2 with the threaded connection of the spray gun connector 1, thus completing the assembly of the mechanical switching component 3. After the spray gun connector 1 is connected to the spray gun, the spray gun connector 1 cannot be rotated freely, while the rotating part 4, the mechanical switching component 3, and the nozzle connector 8 can all rotate around the connecting pipe 2.

[0022] like Figure 1-2 As shown, the rotating part 4 has a groove 41 on its outer side, a first spring 5 is provided in the groove 41, a positioning ring 6 is provided on one side of the first spring 5, and a limiting pin 7 is provided between the nozzle connector 8 and the rotating part 4. The groove 41 is used to cooperate with the first spring 5 to limit the positioning ring 6, the positioning ring 6 is used to limit the limiting pin 7, and the limiting pin 7 is used to cooperate with the rotating part 4 to limit the nozzle connector 8. When the rotating part 4 rotates, the nozzle connector 8 rotates synchronously through the locking action of the limiting pin 7, thereby changing the spray mode of the nozzle.

[0023] like Figure 2-4As shown, the first locking block 33 has at least four slots 330 on one side, and the second locking block 34 has at least four protrusions 340 that cooperate with the slots 330 on one side. The protrusions 340 are used to switch the spray mode with the slots 330 of the first locking block 33 when the rotating member 4 drives the limiting piece 32 to rotate. The outer side of the protrusion is set as an arc edge, which facilitates the smooth sliding of the protrusions 340 out of or into the slots 330 when the first locking block 33 rotates relative to the second locking block 34.

[0024] like Figure 3-4 As shown, the outer side of the first card block 34 is provided with at least two first protrusions 331, which are used to cooperate with the limiting groove 320 of the limiting piece 32 to limit the first card block 33.

[0025] like Figure 2-4 As shown, the outer side of the second locking block 34 is provided with at least two second protrusions 341, and at least two connecting grooves 10 are provided on one side of the spray gun connector 1 to match and connect with the second protrusions 341 of the second locking block 34. The second protrusions 341 are used to cooperate with the connecting grooves 10 of the spray gun connector 1 to limit the second locking block 34. Through the limiting of the connecting grooves 10 and the second protrusions 341 on the spray gun connector 1, when the first locking block 33 rotates around the connecting pipe 2, the second locking block 34 and the first locking block 33 rotate relative to each other.

[0026] like Figure 2-5 As shown, a first elastic block 300 protruding outward is provided on one side of the first elastic piece 30, and a second elastic block 310 is provided on one side of the second elastic piece 31 opposite to the first elastic block 300 of the first elastic piece 30. The first elastic block 300 is used to cooperate with the second elastic block 310 to maintain elastic deformation. When the spray mode adjustment starts, the first locking block 33 rotates relative to the second locking block 34. When the protrusion 340 slides out of the slot 330, a gap is generated between the first locking block 33 and the second locking block 34, so that the first locking block 33 pushes the limiting piece 32 to squeeze the second elastic piece 31, so that the first elastic piece 30 and the second elastic piece 31 are squeezed, and the first elastic block 300 and the second elastic block 310 are compressed and deformed. When the spray mode adjustment is completed, the protrusion 340 is aligned with the slot 330. Through the elastic rebound force of the first elastic block 300 and the second elastic block 310, the protrusion 340 slides into the slot 330 and makes a mechanical contact sound.

[0027] Working principle: First, assembly is performed. The connecting tube 2 is inserted into one end of the rotating part 4. Next, the nozzle connector 8 is inserted into the same end of the rotating part 4 to limit the connecting tube 2. Then, the limiting pin 7 is inserted between the nozzle connector 8 and the rotating part 4 to limit the movement. The positioning ring 6 is then slipped onto one end of the rotating part 4. The first spring 5 is then inserted into the slot 41 to complete the limiting of the rotating part 4 and the nozzle connector 8. Next, the mechanical switching assembly 3 is assembled. First, the first spring piece 30 is inserted along the connecting tube 2 into the rotating part 4. Inside the rotating part 4, after inserting the second spring piece 31, insert the limiting piece 32 along the connecting pipe 2, and simultaneously insert the first locking block 33 into the limiting groove 320 of the limiting piece 32 to complete the connection. When inserting the limiting piece, the limiting groove 320 slides into the limiting block 40, and the second locking block 34 completes the limiting connection with the connecting groove 10 of the spray gun connector 1. Insert the spray gun connector 1 along the connecting pipe 2, and by rotating the spray gun connector 1, the connecting pipe 2 and the spray gun connector 1 are threadedly locked, completing the mechanical process. When assembling the switching component 3, after the spray gun connector 1 is connected to the spray gun, the spray gun connector 1 cannot rotate freely. However, the rotating component 2, the mechanical switching component 3, and the nozzle connector 8 can all rotate around the connecting pipe 2. When it is necessary to switch the spray mode, the rotating component 4 is rotated. The rotating component 4 drives the limiting plate 32 and the nozzle connector 8 to rotate. The limiting plate 32 drives the first locking block 33 to rotate synchronously. When the protrusion 340 slides out of the slot 330, a gap is generated between the first locking block 33 and the second locking block 34, so that the first locking block 33 pushes the limiting plate 32 to squeeze the second spring plate 31, causing the first spring plate 30 and the second spring plate 31 to undergo compression and contraction deformation. When the spray mode adjustment is completed, the protrusion 340 is aligned with the slot 330. Through the elastic rebound force of the first elastic block 300 and the second elastic block 310, the protrusion 340 slides into the slot 330 and makes a mechanical contact sound, which allows the user to judge whether the spray mode is adjusted properly by mechanical feel and sound.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Therefore, without departing from the design spirit of the present utility model, any equivalent changes or modifications made by those skilled in the art to the structure, features and principles of the present utility model should fall within the protection scope of the patent application of the present utility model.

Claims

1. A spray mode mechanical switching component for a spray gun, comprising a spray gun connector, characterized in that: The spray gun connector is rotatably connected to a mechanical switching assembly via a connecting pipe. This mechanical switching assembly is used to adjust the spray mode. A rotating component covers the mechanical switching assembly and cooperates with the connecting pipe to rotate the mechanical switching assembly, switching the spray gun spray mode. A nozzle connector connected to the connecting pipe is located at one end of the mechanical switching assembly, and this nozzle connector is used to connect a nozzle. The mechanical switching assembly includes a first spring plate passing through the connecting pipe, a second spring plate located on one side of the first spring plate, and a component located on one side of the second spring plate. The device includes a limiting plate, a first locking block located on one side of the limiting plate, and a second locking block located on one side of the first locking block. The first spring plate is used to cooperate with the second spring plate to limit the limiting plate. The limiting plate is used to cooperate with the rotating component to limit the first locking block. The second locking block is used to cooperate with the spray gun connector to limit the first locking block. The outer side of the limiting plate is provided with at least two limiting grooves. The inner side of the rotating component is provided with at least one limiting block, which is used to cooperate with the limiting grooves of the limiting plate to limit the first locking block. The spray gun connector and the nozzle connector are connected by a connecting pipe.

2. The spray mode mechanical switching component for a spray gun according to claim 1, characterized in that: The rotating component has a slot on its outer side, a first spring component is provided in the slot, a positioning ring is provided on one side of the first spring component, and a limiting pin is provided between the nozzle connector and the rotating component. The slot is used to cooperate with the first spring component to limit the positioning ring, the positioning ring is used to limit the limiting pin, and the limiting pin is used to cooperate with the rotating component to limit the nozzle connector.

3. The spray mode mechanical switching component for a spray gun according to claim 1, characterized in that: The first card block has at least four slots on one side, and the second card block has at least four protrusions on one side that cooperate with the slots. The protrusions are used to switch the spray mode with the slots of the first card block when the rotating component drives the limiting plate to rotate.

4. The spray mode mechanical switching component for a spray gun according to claim 3, characterized in that: The outer side of the first card block is provided with at least two first protrusions, which are used to cooperate with the limiting groove of the limiting piece to limit the first card block.

5. The spray mode mechanical switching component for a spray gun according to claim 1, characterized in that: The second block has at least two second protrusions on its outer side and at least two connecting grooves on one side of the spray gun connector that match and connect with the second protrusions of the second block. The second protrusions are used to limit the second block by cooperating with the connecting grooves of the spray gun connector.

6. The spray mode mechanical switching component for a spray gun according to claim 1, characterized in that: The first elastic piece has an outwardly protruding first elastic block on one side, and a second elastic block is provided on the side of the second elastic piece opposite to the first elastic block of the first elastic piece. The first elastic block is used to cooperate with the second elastic block to maintain elastic deformation.

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