Inner hole spraying device

Abstract

The utility model provides an inner hole spraying device. The inner hole spraying device comprises a rack, a fixed seat, a sliding seat and a spraying pipe with a mounting cavity, the fixed seat is fixedly arranged on the rack, the spraying pipe is connected to the sliding seat, the sliding seat is arranged on the rack in a sliding mode, when the sliding seat slides towards the fixed seat, the spraying pipe extends out of the fixed seat, and when the sliding seat slides towards the mounting cavity, the spraying pipe is connected to the mounting cavity. A spraying opening is formed in the end, close to the fixing base, of the spraying pipe. The spraying pipe and the sliding base capable of driving the spraying pipe and the spraying opening in the spraying pipe to move are designed, when the spraying device is used, the spraying gun is arranged in the spraying pipe and stretches into the inner hole of the part through the displacement of the spraying pipe to achieve spraying, the spraying device is suitable for spraying of the inner hole with the deep and long hole, and the problem that spraying of the inner hole with the deep and long hole cannot be achieved through an existing technology is solved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to an internal hole spraying device. Background Technology

[0002] The landing gear requires the use of corrosion-resistant aluminum-based water-based paint on the piston rod, a key load-bearing structural component. This type of piston rod is generally T-shaped, such as... Figure 1 As shown, the aperture of the holes in the area to be sprayed is less than 100mm, while the hole depth is as long as 1600mm, with a hole diameter ratio of 18:1. This is the first time that an internal hole spraying process for aluminum-based water-based paint has been used. Due to factors such as the depth of the inner hole of the part and the existing conditions of the factory, the handheld internal hole spray gun cannot guarantee the quality stability during the spraying process, while robotic spraying is not feasible due to the influence of hole diameter and depth. Even if the spray gun is modified, the appearance quality and uniformity of the coating cannot be guaranteed. Utility Model Content

[0003] The purpose of this invention is to provide an internal hole spraying device that can adapt to the internal hole spraying process of the above-mentioned parts.

[0004] The technical solution of this utility model is: an internal hole spraying device, including a frame, a fixed seat, a slide seat and a spraying pipe with an installation cavity. The fixed seat is fixed on the frame, the spraying pipe is connected to the slide seat, the slide seat is slidably disposed on the frame, and when the slide seat slides toward the fixed seat, the spraying pipe extends out from the fixed seat. The end of the spraying pipe near the fixed seat is provided with a spraying nozzle.

[0005] Preferably, the fixed base is provided with a first support block, the slide is provided with a second support block, one end of the spray pipe is installed in the second support block, and the other end of the spray pipe passes through the first support block.

[0006] Preferably, a bushing is provided between the spray pipe and the second support block; a ball bearing sleeve is provided between the spray pipe and the first support block.

[0007] Preferably, both the first support block and the second support block are connected by a lifting drive mechanism.

[0008] Preferably, the drive mechanism includes a first mounting base, a second mounting base, a worm gear, a lead screw, and a handle. The worm gear is rotatably disposed within the first mounting base, and the lead screw passes vertically through the first mounting base and meshes with the worm gear. One end of the worm gear extends out of the first mounting base and connects to the handle, and the upper end of the lead screw extends out of the first mounting base and connects to the second mounting base. The first mounting base is mounted on a fixed base or a sliding base, and the second mounting base is used to mount a first support block or a second support block.

[0009] Preferably, the mounting cavity is located close to the spray nozzle. After the spray gun is installed in the mounting cavity, the nozzle of the spray gun can extend from the spray nozzle, facilitating spraying operations.

[0010] Preferably, the upper surface of the frame is provided with a guide rail, and the bottom of the slide is provided with a slider that is adapted to the guide rail.

[0011] Preferably, the bottom of the frame is provided with casters and vertically extendable support legs.

[0012] Preferably, the upper surface of the frame is provided with a stop block for defining the starting and / or ending position of the slide movement.

[0013] Preferably, the frame includes a frame body and a base plate disposed at the upper end of the frame body, the frame body is hollow inside, and the fixed seat and the sliding seat are mounted on the base plate.

[0014] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0015] 1. Design a spray tube and a slide that can move the spray tube and the spray nozzle on it. When in use, the spray gun is placed in the spray tube, and the spray is extended into the inner hole of the part by the displacement of the spray tube to achieve spraying. It is suitable for spraying deep inner holes and solves the problem of deep inner hole spraying that cannot be achieved by existing processes.

[0016] 2. The first and second support blocks for installing the spraying pipe are both height-adjustable via a drive mechanism, which enables the spray gun to be aligned with the center of the inner hole of the part being sprayed, ensuring uniform spraying and coating quality.

[0017] 3. The spray pipe slides within the first support block through the cooperation of the ball sleeve. The circumferentially arranged balls of the ball sleeve are interference-fitted with the spray pipe, which on the one hand ensures the fast and stable movement of the spray pipe, and on the other hand plays a good guiding role.

[0018] Fourth, the spray pipe is fitted with a bushing to tightly engage with the second support block. On the one hand, this tight engagement allows the spray pipe to follow the movement of the second support block through sliding. On the other hand, it enables a detachable installation structure.

[0019] 5. The bottom of the frame is equipped with casters and outriggers. When in use, extend the outriggers to raise the casters, providing a stable working environment. The height of the frame can be adjusted by adjusting the outriggers to place the spray pipe at a suitable height. When it is necessary to move, raise the outriggers to make the casters contact the ground for easy movement.

[0020] VI. This utility model uses a spraying tube inserted into the inner hole of the part to achieve spraying. After extensive spraying process verification, this method can ensure the consistency of the sprayed coating quality and the uniformity of the thickness. It can also complete the spraying of the entire inner hole area of ​​the piston rod in one go, simplifying the original process that required two or more steps of spraying, greatly improving the spraying efficiency, and improving the coating quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of a certain type of piston rod;

[0022] Figure 2 A schematic diagram of the internal hole spraying device provided by this utility model;

[0023] Figure 3 This is a schematic diagram of the drive mechanism;

[0024] Figure 4 This is a schematic diagram of the ball bearing sleeve.

[0025] Figure 5 A schematic diagram of the stop block.

[0026] In the attached diagram: 1. Frame; 101. Frame body; 102. Base plate; 103. Casters; 104. Support legs; 2. Fixed base; 3. Drive mechanism; 31. First mounting base; 32. Second mounting base; 33. Worm gear; 34. Lead screw; 35. Handle; 4. First support block; 5. Second support block; 6. Ball sleeve; 7. Bushing; 8. Spray pipe; 81. Spray nozzle; 9. Guide rail; 10. Slider; 11. Stop block; 12. Slide seat. Detailed Implementation

[0027] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0028] like Figure 2 , Figure 5 As shown, the internal hole spraying device provided in this embodiment includes a frame 1, a fixed base 2, a drive mechanism 3, a first support block 4, a second support block 5, a ball sleeve 6, a bushing 7, a spraying pipe 8, a guide rail 9, a slider 10, a stop block 11, and a slide block 12.

[0029] The frame 1 includes a frame body 101, a base plate 102, casters 103, and support legs 104. The frame body 101 is a rectangular structure formed by multiple steel pipes joined together, and its hollow interior provides movement space for the lead screw 34 of the drive mechanism 3. The upper surface of the frame body 101 is bolted with a rectangular base plate 102. The center of the base plate 102 has an elongated through hole for the lead screw 34 to pass through.

[0030] The upper surface of the base plate 102 is provided with a guide rail 9, which is provided on both sides of the elongated through hole and extends along the length of the base plate 102.

[0031] The fixed base 2 is bolted to one end of the base plate 102. A slider 10 is mounted on the lower surface of the slide block 12, and the slider 10 is slidably connected to the guide rail 9. Under the action of the slider 10, the slide block 12 slides along the guide rail 9 to move closer to or away from the fixed base 2.

[0032] Both the fixed base 2 and the slide 12 are equipped with a drive mechanism 3. Figure 3 As shown, the drive mechanism 3 includes a first mounting base 31, a second mounting base 32, a worm gear 33, a lead screw 34, and a handle 35. The worm gear 33 is rotatably disposed inside the first mounting base 31. The lead screw 34 passes vertically through the first mounting base 31 and meshes with the worm gear 33. One end of the worm gear 33 extends outside the first mounting base 31 and connects to the handle 35. The upper end of the lead screw 34 extends outside the first mounting base 31 and connects to the second mounting base 32. The first mounting base 31 is bolted to the fixed base 2 or the slide 12. The second mounting base 32 mounted on the fixed base 2 is bolted to the first support block 4. The second mounting base 32 mounted on the slide 12 is bolted to the second support block 5.

[0033] The upper end of the first support block 4 is provided with a mounting hole, and a ball bearing sleeve 6 is disposed in the mounting hole. Figure 4 As shown, multiple steel balls are arranged on the side wall of the ball bushing 6, achieving an interference fit with the spraying pipe 8. The ball bushing 6 is a plastic steel ball bushing. The upper end of the second support block 5 is provided with a mounting hole, and a PTFE bushing 7 is installed in the mounting hole. The bushing 7 is tightly installed with the spraying pipe 8, so that there is no relative displacement between the spraying pipe 8 and the bushing 7.

[0034] like Figure 2 As shown, the spray tube 8 is a stainless steel tube with a spray nozzle 81 at one end. The interior of the spray tube 8 near the spray nozzle 81 has a mounting cavity (not shown) for mounting a spray gun. One end of the spray tube 8 with the spray nozzle 81 passes through the ball sleeve 6, and the other end is tightly fitted into the bushing 7.

[0035] There are two ways to adjust the height of the spray pipe 8. One is to raise the entire frame 101 using the support legs 104. The support legs 104 are a common structure found in tooling tables. The other is to adjust the height using the drive mechanism 3 to meet the needs of different spraying sites.

[0036] During spraying, the spray gun is installed in the mounting cavity inside the spray tube 8, with the nozzle extending from the spray port 81. The part is clamped using an additional fixture, ensuring that the axis of its inner bore is aligned with the axis of the spray tube 8. The axis of the spray tube 8 can be finely adjusted using the drive mechanism 3. The spray gun is started, and the slide 12 is moved. The slide 12 moves the spray tube 8 and the spray gun together, with the spray port 81 extending into the inner bore of the part. The spray tube 8 continues to move until the entire inner bore of the part is sprayed.

[0037] The upper surface of the base plate 102 is provided with a stop block 11 (e.g., ...) for limiting the starting and / or ending positions (set according to actual needs) of the movement of the slide block 12. Figure 5 (As shown). The stop block 11 is n-shaped with through holes at both ends for bolts to pass through and be threaded to the base plate 102. When the slide block 12 contacts the stop block 11, it achieves restraint. The movement of the slide block 12 can be done manually or by motor, depending on actual needs. The drive speed of the motor can be designed according to the spraying process to ensure coating uniformity and full coverage.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An internal bore spray device comprising a frame, characterised in that, The fixed seat is fixed on the frame, the sliding seat is connected with the spraying pipe, and the spraying pipe is extended from the fixed seat when the sliding seat slides to the fixed seat.

2. The internal bore spray device of claim 1, wherein, The first supporting block is arranged on the fixed seat, the second supporting block is arranged on the sliding seat, one end of the spraying pipe is installed in the second supporting block, and the other end of the spraying pipe is arranged in the first supporting block.

3. The internal bore spray device of claim 2, wherein, A bushing is arranged between the spraying pipe and the second supporting block, and a ball sleeve is arranged between the spraying pipe and the first supporting block.

4. The internal bore spray device of claim 2, wherein, The first supporting block and the second supporting block are connected through a lifting driving mechanism.

5. The internal bore spray device of claim 4, wherein, The driving mechanism comprises a first mounting seat, a second mounting seat, a worm, a screw rod and a handle, the worm is arranged in the first mounting seat, the screw rod vertically penetrates the first mounting seat and is engaged with the worm, one end of the worm extends to the outside of the first mounting seat and is connected with the handle, the upper end of the screw rod extends to the outside of the first mounting seat and is connected with the second mounting seat, the first mounting seat is installed on the fixed seat or the sliding seat, and the second mounting seat is used for installing the first supporting block or the second supporting block.

6. The internal bore spray device of any one of claims 1-5, wherein, The mounting cavity is arranged close to the spraying port.

7. The internal bore spray device of any one of claims 1-5, wherein, The upper surface of the frame is provided with a guide rail, and the bottom of the sliding seat is provided with a sliding block matched with the guide rail.

8. The internal bore spray device of any one of claims 1-5, wherein, The bottom of the frame is provided with universal wheels and legs capable of vertically extending and retracting.

9. The internal bore spray device of any one of claims 1-5, wherein, The upper surface of the frame is provided with a stop block for limiting the start and / or end position of the sliding seat.

10. The internal bore spray device of any one of claims 1-5, wherein, The frame comprises a frame body and a bottom plate arranged at the upper end of the frame body, the frame body is hollow, and the fixed seat and the sliding seat are installed on the bottom plate.

Images