Bolt line drawing device and method

Abstract

The invention discloses a bolt line drawing device and method, and relates to the field of engine assembly.The bolt line drawing device comprises a main body barrel, the main body barrel is internally divided into an air pressure bin and a liquid bin through a sealing plug, a guiding telescopic rod is arranged in the liquid bin, one end of the guiding telescopic rod is connected with the sealing plug, and the other end of the guiding telescopic rod is connected with the end face of the main body barrel; the guiding telescopic rod is sleeved with a guiding telescopic spring. A top pressure switch assembly is mounted at one end, corresponding to the liquid bin, of the main body cylinder, and a fan-shaped nozzle is mounted on the top pressure switch assembly; a liquid channel is formed in the jacking switch assembly, the jacking switch assembly moves towards the inner side of the main body cylinder after being extruded to open the liquid channel, and liquid enters the fan-shaped nozzle from the liquid bin. According to the line drawing device, the influence of the operation flatness environment can be reduced, the line is kept uniform and clear in width, and the line drawing device can be recycled.

Description

Technical Field

[0001] This invention relates to the field of engine assembly, and more particularly to a bolt marking device and method. Background Technology

[0002] After bolts are assembled, they are usually marked with lines to facilitate inspection for looseness. Traditionally, this is done manually using a marker or paint pen. However, due to the non-planar structure between the bolt and the component, manual marking cannot guarantee straight, continuous, and consistent lines, and is inefficient. To overcome these problems, a marking nozzle has been disclosed in the prior art. This nozzle includes a retaining ring, a nozzle head, a pressure plate, and a spray pipe. One end of the pressure plate is fixedly connected to the nozzle head, and the other end is movably connected to the retaining ring. The middle section is for the user to press, causing the nozzle head to spray paint.

[0003] While the above method can improve operational efficiency compared to traditional line drawing methods, it still relies on manual pressing. The spray angle and flow rate are determined by the pressing force, which can easily cause broken lines or uneven thickness due to differences in pressing speed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a bolt marking device and method that can reduce the influence of the working flatness environment, and achieve uniform and clear line width. Moreover, the marking device can be recycled.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, embodiments of the present invention provide a bolt marking device, including a main cylinder, wherein the main cylinder is divided into a pressure chamber and a liquid chamber by a sealing plug, and a guide telescopic rod is provided in the liquid chamber. One end of the guide telescopic rod is connected to the sealing plug, and the other end is connected to the end face of the main cylinder. A guide telescopic spring is provided on the outer sleeve of the guide telescopic rod. The main body cylinder is equipped with a top pressure switch assembly at one end corresponding to the liquid chamber, and the top pressure switch assembly is equipped with a fan-shaped nozzle. The top pressure switch assembly has a liquid channel. When the top pressure switch assembly is squeezed, it moves inward to the inside of the main body cylinder to open the liquid channel, and the liquid enters the fan-shaped nozzle from the liquid chamber.

[0006] As a further implementation, the guide telescopic rod is provided with several liquid guiding holes at one end connected to the main body cylinder.

[0007] As a further implementation, the pressure switch assembly includes a pressure switch body and a pressure switch spring, wherein in the initial state, the pressure switch spring causes the pressure switch body to seal the liquid passage.

[0008] As a further implementation, the top pressure switch body includes a spray head, a movable rod, and a movable plate. The liquid channel is located inside the spray head, the movable rod is coaxially installed with the spray head, and one end of the movable rod is connected to a fan-shaped nozzle. The top pressure switch spring is sleeved on the outside of the movable rod, and one end of the top pressure switch spring abuts against the movable plate.

[0009] As a further implementation, a first sealing ring is installed at the end of the movable plate away from the top pressure switch spring.

[0010] As a further implementation, the main body cylinder is equipped with a pressure relief check valve corresponding to the pressure chamber, which is used to release pressure when the gas pressure in the pressure chamber exceeds a set value.

[0011] As a further implementation, the main cylinder is equipped with a gas filling check valve corresponding to the pressure chamber, the gas filling check valve being used to allow gas to enter the pressure chamber.

[0012] As a further implementation, the main body cylinder is equipped with a filling check valve corresponding to the liquid tank, and the filling check valve is used to connect an external liquid filling device.

[0013] Secondly, embodiments of the present invention also provide a bolt marking method, wherein the top pressure switch assembly of the bolt marking device is brought into contact with the bolt, and under the squeezing action, the top pressure switch assembly moves into the main body cylinder, thereby opening the liquid channel; the liquid enters the fan-shaped nozzle through the liquid channel and is atomized and sprayed onto the bolt surface.

[0014] As a further implementation, when the gas pressure exceeds the set value, the internal screw plug of the pressure relief check valve is loosened to release pressure.

[0015] The beneficial effects of this invention are as follows: (1) The bolt marking device of the present invention includes a main cylinder, which is divided into a pressure chamber and a liquid chamber by a sealing plug. The liquid chamber is provided with a guide telescopic rod. A top pressure switch assembly is installed at the front end of the liquid chamber. The top pressure switch assembly has a built-in spring that blocks the internal liquid channel when it is not under force. When it is subjected to squeezing pressure and moves inward, it opens the liquid channel, allowing the liquid to flow out and be atomized and sprayed out. Under the combined action of gas and liquid, the line width can be kept constant and the lines are clear and continuous.

[0016] (2) The main body of the present invention is equipped with a pressure relief check valve, which can automatically and actively relieve pressure when the pressure chamber is too high, so that the sealing plug can return to its original position and ensure the safety of the device. At the same time, the main body is also equipped with a gas filling check valve and a filling check valve, which can inject gas and liquid into the main body, so that the device can be recycled. Compared with the existing line drawing method, it can improve the line drawing efficiency and has a lower cost. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is a schematic diagram of the line drawing device according to one or more embodiments of the present invention; Figure 2 This is a schematic diagram of the installation of the pressure relief check valve and the gas filling check valve according to one or more embodiments of the present invention; Figure 3 This is a schematic diagram of the installation of the guide telescopic rod according to one or more embodiments of the present invention; Figure 4 This is a schematic diagram of the top pressure switch assembly structure according to one or more embodiments of the present invention; Figure 5 This is a schematic diagram of the top pressure switch body structure according to one or more embodiments of the present invention.

[0019] Among them, 1. pressure relief check valve, 2. gas filling check valve, 3. main body cylinder, 4. sealing plug, 5. guide telescopic rod, 6. filling check valve, 7. guide telescopic spring, 8. top pressure switch spring, 9. first sealing ring, 10. second sealing ring, 11. top pressure switch body, 12. fan-shaped nozzle, 13. mounting hole, 14. guide rod, 15. guide seat, 16. liquid guide hole, 17. partition plate, 18. liquid channel, 19. nozzle part, 20. movable plate, 21. movable rod. Detailed Implementation

[0020] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0021] For ease of description, the use of the words "front" and "back" in this invention only indicates that they are consistent with the front and back directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] In the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Example 1: This embodiment provides a bolt marking device, such as... Figure 1As shown, the system includes a main cylinder 3, a guide telescopic rod 5, a guide telescopic spring 7, and a top pressure switch assembly. The main cylinder 3 serves as the primary carrier, with the top pressure switch assembly installed at one end, making that end the front end. Inside the main cylinder 3, there is a guide telescopic rod 5, which is coaxially aligned with the main cylinder 3. One end of the guide telescopic rod 5 is connected to the inner wall of the front end of the main cylinder 3, and the other end is fitted with a sealing plug 4, which fits snugly against the inner wall of the main cylinder 3. The sealing plug 4 divides the interior of the main cylinder 3 into two cavities: a front cavity filled with liquid, forming a liquid chamber; and a rear cavity filled with gas, forming a pressure chamber.

[0024] The main body cylinder 3 is made of metal, such as stainless steel. The dimensions of the main body cylinder 3 are set according to actual requirements. In this embodiment, the sidewall thickness of the main body cylinder 3 is 3mm, the outer diameter is 40~50mm, and the front wall thickness is 10mm. Figure 1 and Figure 2 As shown, a pressure relief check valve 1 and a gas filling check valve 2 are installed at the rear end of the main body cylinder 3, and their installation directions are opposite. The metal ball in the pressure relief check valve 1 is closer to the rear end of the main body cylinder 3, while the metal ball in the gas filling check valve 2 is farther away from the rear end of the main body cylinder 3. The pressure relief check valve 1 is used to control the gas pressure in the pressure chamber, maintaining the gas pressure at 0.5~0.8 MPa. When the pressure is increased to a certain level, it ensures that the gas pushes the metal ball of the pressure relief check valve 1 to compress the spring and release pressure, thereby improving the safety of the device. The gas filling check valve 2 is connected to an external gas filling device for gas filling, ensuring that gas only enters the pressure chamber. During gas filling, the gas pushes the metal ball of the gas filling check valve 2 to compress the spring, allowing the gas to enter the pressure chamber. After gas filling is completed, the spring pushes the metal ball back to its original position, and the metal ball seals the gas filling port for sealing.

[0025] The pressure relief check valve 1 has a built-in screw plug at the top. Loosening the screw plug reduces the force on the spring in the pressure relief check valve 1 and reduces the pressure on the metal ball, thus achieving pressure relief.

[0026] A one-way valve 6 is installed on the side of the liquid tank. The liquid can be added into the liquid tank through the one-way valve 6. The liquid is usually a colored liquid, such as acrylic paint or alkyd paint.

[0027] like Figure 1 and Figure 3 As shown, the guide telescopic rod 5 is used to fix the sealing plug 4 and maintain axial movement. A guide telescopic spring 7 is sleeved on the outside of the guide telescopic rod 5. Its function is to push the sealing plug 4 back to its original position after the pressure chamber is depressurized due to the depletion of liquid. The main function of the sealing plug 4 is to isolate gas from liquid. When the pressure in the pressure chamber increases, it pushes the sealing plug 4 to move downward in the direction shown in the view to compress the liquid. The thickness of the sealing plug 4 is 10~15mm, which fits tightly against the inner wall of the main body cylinder 3. The sealing plug 4 cooperates with the guide telescopic rod 5 to prevent the sealing plug 4 from tilting during movement.

[0028] In this embodiment, the guide telescopic rod 5 includes a guide rod 14 and a guide seat 15. The guide seat 15 has a guide channel for the movement of the guide rod 14, and the front end of the guide rod 14 is inserted into the guide channel. The guide seat 15 is fixed to the main body cylinder 3. In order to install the top pressure switch assembly, the interior of the guide seat 15 is divided into a guide channel and an installation cavity by a partition 17. The periphery of the installation cavity is provided with several liquid guiding holes 16, so that the liquid in the liquid tank can enter the installation cavity and open the top pressure switch assembly when a certain pressure is generated.

[0029] When subjected to compressive pressure, the top pressure switch assembly moves inward toward the main body cylinder 3 to open the internal liquid channel 18, allowing the liquid to flow out and be atomized and sprayed out. For example... Figure 4 and Figure 5 As shown, the top pressure switch assembly includes a top pressure switch body 11, a fan-shaped nozzle 12, and a top pressure switch spring 8. A mounting hole 13 is provided at the front end of the main body cylinder 3, and the mounting hole 13 is a countersunk hole. The top pressure switch body 11 includes a nozzle head, a movable rod 21, and a movable plate 20. The nozzle head is disposed within the mounting hole 13 of the main body cylinder 3. To ensure sealing, a second sealing ring 10 is provided at the rear end of the nozzle head corresponding to the mounting hole 13.

[0030] The nozzle head has a liquid channel 18 arranged axially inside. A fan-shaped nozzle 12 is installed inside the nozzle head, located at the front end of the liquid channel 18. The end of the fan-shaped nozzle 12 has a Y-shaped channel. The rear end of the fan-shaped nozzle 12 is connected to a movable rod 21, and the diameter of the movable rod 21 is smaller than the diameter of the liquid channel 18. The movable rod 21 passes axially through the mounting hole 13, the movable plate 20, and the partition 17 in the guide telescopic rod 5. The movable plate 20 is fixedly connected to the movable rod 21 and is located behind the mounting hole 13. A pressure switch spring 8 is sleeved on the outside of the movable rod 21 and is located between the partition 17 and the movable plate 20.

[0031] The movable plate 20 is fitted with a first sealing ring 9 on the side facing the front wall of the main body cylinder 3. Under the elastic force of the top pressure switch spring 8, the first sealing ring 9 seals the mounting hole 13 of the main body cylinder 3, preventing liquid from entering the liquid channel 18. When the top pressure switch body 11 moves backward under the action of external force, the movable plate 20 compresses the top pressure switch spring 8, and the first sealing ring 9 separates from the end face of the main body cylinder 3. The air pressure compresses the liquid and enters the liquid channel 18 inside the top pressure switch body 11. The fan-shaped nozzle 12 atomizes the liquid and sprays it onto the surface of the object.

[0032] like Figure 4 and Figure 5 As shown, the longitudinal section of the fan-shaped nozzle 12 is fan-shaped, and the outlet cross section of the fan-shaped nozzle 12 is rectangular, so that the liquid forms a linear spray.

[0033] In this embodiment, the sealing plug 4, the first sealing ring 9, and the second sealing ring 10 are all made of rubber.

[0034] The bolt marking device in this embodiment is based on the synergistic effect of gas and liquid, and is triggered by compression to automatically open the liquid channel 18, which can ensure a constant line width and clear and continuous lines; the device can also be cyclically replenished and can be reused for a long time; at the same time, the overall size of the device is small and can be applied to complex assembly spaces.

[0035] Example 2: This embodiment provides a bolt marking method based on the bolt marking device described in Embodiment 1. When the device contacts the bolt, the top pressure switch body 11 is subjected to extrusion force and moves inward toward the main body cylinder 3. The movable plate 20 and the first sealing ring 10 move upward, releasing the sealing effect on the liquid channel 18. The liquid in the liquid chamber enters the liquid channel 18 through the liquid guide hole 16, and then enters the fan-shaped nozzle 12 through the Y-shaped channel. The fan-shaped nozzle 12 sprays out a linear spray to realize the bolt surface marking operation.

[0036] When the gas pressure inside the pressure chamber exceeds 0.8 MPa, the threads of the built-in plug of the pressure relief check valve 1 are gradually loosened to actively relieve pressure.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bolt marking device, characterized in that, The device includes a main cylinder, which is divided into a pressure chamber and a liquid chamber by a sealing plug. A guide telescopic rod is provided in the liquid chamber. One end of the guide telescopic rod is connected to the sealing plug, and the other end is connected to the end face of the main cylinder. A guide telescopic spring is provided on the outer sleeve of the guide telescopic rod. The main body cylinder is equipped with a top pressure switch assembly at one end corresponding to the liquid chamber, and the top pressure switch assembly is equipped with a fan-shaped nozzle. The top pressure switch assembly has a liquid channel. When the top pressure switch assembly is squeezed, it moves inward to the inside of the main body cylinder to open the liquid channel, and the liquid enters the fan-shaped nozzle from the liquid chamber.

2. The bolt marking device according to claim 1, characterized in that, The guide telescopic rod is provided with several liquid guiding holes at one end connected to the main cylinder.

3. A bolt marking device according to claim 1 or 2, characterized in that, The pressure switch assembly includes a pressure switch body and a pressure switch spring. In the initial state, the pressure switch spring causes the pressure switch body to seal the liquid passage.

4. A bolt marking device according to claim 3, characterized in that, The main body of the top pressure switch includes a spray head, a movable rod, and a movable plate. The liquid channel is located inside the spray head. The movable rod is coaxially installed with the spray head, and one end of the movable rod is connected to a fan-shaped nozzle. The top pressure switch spring is sleeved on the outside of the movable rod, and one end of the top pressure switch spring abuts against the movable plate.

5. A bolt marking device according to claim 4, characterized in that, The first sealing ring is installed on the end of the movable plate away from the top pressure switch spring.

6. A bolt marking device according to claim 1, characterized in that, The main cylinder is equipped with a pressure relief check valve corresponding to the pressure chamber. The pressure relief check valve is used to release pressure when the gas pressure in the pressure chamber exceeds a set value.

7. A bolt marking device according to claim 1 or 6, characterized in that, The main cylinder is equipped with a gas filling check valve corresponding to the pressure chamber, which is used to allow gas to enter the pressure chamber.

8. A bolt marking device according to claim 1, characterized in that, The main cylinder is equipped with a filling check valve corresponding to the liquid tank, and the filling check valve is used to connect an external liquid filling device.

9. A method for marking bolt lines, characterized in that, Using the bolt marking device as described in any one of claims 1-8, the end of the bolt marking device with the pressure switch assembly is brought into contact with the bolt. Under the pressure, the pressure switch assembly moves into the main body cylinder, opening the liquid channel. The liquid enters the fan-shaped nozzle through the liquid channel and is atomized and sprayed onto the bolt surface.

10. A bolt marking method according to claim 9, characterized in that, When the gas pressure exceeds the set value, the internal screw plug of the pressure relief check valve is loosened to release the pressure.

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