Telescopic double-layer paint sprayer structure capable of removing dust

Abstract

The invention discloses a telescopic double-layer paint sprayer structure capable of removing dust, and belongs to the field of dust removal and paint spraying devices. One end of a breather pipe is connected with an air pressure container and provided with a first electromagnetic ball valve; the other end of the rotating pipe sleeve is driven by a servo motor fixed to the ventilation pipe through a base to rotate around the axis. The inclined section penetrates through the breather pipe to be connected with the paint pressure container and is provided with a second electromagnetic ball valve, and the straight section is arranged in a cavity of the breather pipe and is parallel in axis. One end of the paint spraying pipe is connected with the straight section cavity, and the other end of the paint spraying pipe is provided with a spraying head and movably clamped to the straight section. The inner wall of the rotating pipe is fixedly connected with a threaded block with a threaded hole, the threaded block is in threaded fit with the spraying pipe, and the spraying pipe is driven by rotation to move along the axis so that the nozzle can stretch out or retract from the other end of the rotating pipe. The threaded block is provided with a through hole to keep the two cavities communicated. According to the structure, the spray pipe stretches out and draws back through thread transmission, the spray pipe is contained in the rotating pipe when not used, and the functions of saving space and protecting parts are achieved.

Description

Technical Field

[0001] The present invention belongs to the field of paint nozzle structures, and particularly relates to a dust-removing telescopic double-layer paint nozzle structure. Background Art

[0002] When spraying paint, it is necessary to blow clean the surface of the material with gas and then evenly spray the paint on the surface of the material.

[0003] Although the existing integrated paint nozzle structure integrates the nozzle and the high-pressure blowing device into one body, and can immediately spray paint after blowing the surface of the material, improving the continuity of the paint spraying process. However, since the paint nozzle is exposed outside the high-pressure blowing device, the overall space occupied by the two is large, and it is difficult for the paint nozzle to reach some narrow areas for operation. At the same time, the paint nozzle is exposed for a long time and is easily contaminated by dust, moisture, etc. in the external environment, and is more likely to be blocked by foreign objects under harsh working conditions.

[0004] In summary, it is necessary to design a dust-removing telescopic double-layer paint nozzle structure to solve the problems of large space occupied by the paint nozzle and the blowing device and easy contamination of the paint nozzle. Summary of the Invention

[0005] In order to solve the above problems, the present invention proposes a dust-removing telescopic double-layer paint nozzle structure.

[0006] In order to achieve the above object, the present invention proposes the following technical content: A dust-removing telescopic double-layer paint nozzle structure includes the following structures: An air pipe, one end of which is connected and communicated with a pressure vessel filled with air through a hose; a first electromagnetic ball valve is installed on the air pipe; A rotating pipe, one end of which is sleeved on the other end of the air pipe and can rotate relative to the air pipe around the axis of the air pipe; A servo motor, the base of which is installed on the air pipe and is used to drive the rotating pipe to rotate; A paint bent pipe, including an inclined section and a straight section. The inclined section is inserted into the air pipe, and the straight section is located in the cavity of the air pipe. One end of the straight section is connected and communicated with one end of the inclined section located in the cavity of the air pipe, and the axis of the straight section is parallel to the axis of the air pipe; the end of the inclined section away from the straight section is connected and communicated with a pressure vessel filled with paint through a hose; a second electromagnetic ball valve is installed on the inclined section; A paint spray pipe, which is simultaneously located in the rotating pipe and the cavity of the air pipe. One end of the paint spray pipe is located in the cavity of the straight section, and the other end is installed with a nozzle; the paint spray pipe is movably clamped on the straight section, and the paint spray pipe can only slide relative to the paint spray pipe along the axis of the paint spray pipe; by moving the paint spray pipe, the nozzle can extend out or retract into the cavity of the rotating pipe from the other end of the rotating pipe; The thread block is fixedly connected to the inner wall of the rotating tube cavity; a threaded hole is provided on the thread block, and the rotating tube is threadedly connected to the paint spray pipe through the threaded hole on the thread block; The through hole is arranged on the threaded block and is used to ensure that the ventilating tube cavity is always connected with the rotating tube cavity.

[0007] Furthermore, the rotating tube is connected to the ventilation tube via a bearing, the outer ring of the bearing is fixedly connected to the rotating tube, and the inner ring is fixedly connected to the ventilation tube.

[0008] Compared with the rotating tube directly mounted on the ventilation pipe, the rotation is realized by relying on the slide groove and slider structure and the bearing connection is adopted, so that the rotating tube can rotate relative to the ventilation pipe more smoothly.

[0009] Furthermore, a first sealing ring made of rubber material is provided between the inner wall of the rotating tube and the outer wall of the ventilation tube. The first sealing ring is sleeved on the outer wall of the ventilation tube and abuts against the inner wall of the rotating tube.

[0010] Ensure the integrity of the gas flow channel and avoid air leakage at the interface of the rotating tube and the ventilation tube. If there is air leakage, the blowing force will be reduced and the blowing effect will be unsatisfactory.

[0011] Furthermore, a dovetail-shaped slider is fixedly connected to the outer wall of the paint nozzle, and a matching dovetail-shaped slide groove is provided on the inner wall of the straight section cavity. The dovetail groove structure limits the paint nozzle to slide only along the axial direction; by designing the length of the slide groove, it is ensured that the paint nozzle will not separate from the straight section.

[0012] By relying on the dovetail groove structure, the paint nozzle is restricted to slide only along the axis of the straight section, restricting the position of other modes, ensuring that the rotating action of the rotating tube is converted into the sliding of the paint nozzle.

[0013] Furthermore, a second sealing ring made of rubber is sleeved on the outer wall of the paint spray pipe, and the second sealing ring abuts against the inner wall of the straight section cavity.

[0014] Similarly, the second sealing ring is used to seal the paint nozzle and the straight section to avoid a gap between the two. If a gap occurs between the two, the paint will enter the airway of the vent pipe, affecting the subsequent use of the airway.

[0015] Furthermore, the through holes are provided in plurality, and the plurality of through holes are arranged in a circular array around the axis of the paint spray pipe.

[0016] Multiple evenly spaced through holes ensure even air flow and smoother dust removal.

[0017] Furthermore, the nozzle structure can be provided in plurality, and the plurality of nozzle structures are integrated into a whole through the outer shell.

[0018] Integrate multiple different nozzle structures into a whole, enabling continuous replacement of nozzles during the process of spraying paint once, without stopping and replacing the nozzles.

[0019] Furthermore, it also includes a searchlight, which is fixedly connected to the housing or the ventilation pipe.

[0020] It can provide light, and the layout positions of the searchlights are different in different implementation manners, meeting the purpose of installation flexibility.

[0021] Furthermore, a three-way valve is installed at one end of the inclined section of the paint folding pipe away from the straight section. The outlet of the three-way valve is communicated with the inclined section, and the other two inlets are respectively communicated with a paint pressure vessel and a cleaning agent pressure vessel through hoses.

[0022] A cleaning agent channel is designed, and part of the path of the cleaning agent channel shares the same path with the paint channel. The cleaning agent can be used to wash the residual paint inside the paint spray pipe, avoiding paint solidification and affecting the next painting.

[0023] The beneficial effects that can be achieved by adopting the above technical solutions are as follows: 1. Placing the paint spray pipe in the rotating pipe cavity, compared with the independent layout and then integration of the two, this layout method of this solution saves more space. The smaller the space, the more convenient it is for the device to spray paint in a narrow position.

[0024] 2. When in use, the paint spray pipe is outside the rotating pipe cavity, and when not in use, it retracts into the rotating pipe cavity, avoiding collision damage to the paint spray pipe during the period when it is not in use. Brief Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the whole in Embodiment 1; Figure 2 It is a cross-sectional view of the whole structure in Embodiment 1.

[0026] Figure 3 It is a schematic structural diagram of the whole in Embodiment 2; Figure 4 It is a cross-sectional view of Embodiment 2.

[0027] 1. Ventilation pipe; 2. Rotating pipe; 3. External gear; 4. Servo motor; 5. Driving gear; 6. Paint folding pipe; 61. Inclined section; 62. Straight section; 7. Paint spray pipe; 8. Nozzle; 9. Threaded block; 10. Threaded hole; 11. Through hole; 12. Searchlight; 13. Bearing; 14. First sealing ring; 15. Reducer; 16. Housing; Detailed Embodiment

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0029] Embodiment 1: As Figure 1 and Figure 2 shown, a dust-removing telescopic double-layer paint spray head structure includes: A ventilation pipe 1, which is a rigid pipe. In Figure 1 , its left end is connected and communicated with a pressure vessel filled with air through a hose. And the outer wall of the ventilation pipe 1 is fixedly connected to the robotic arm, and the ventilation pipe 1 is driven by the robotic arm to move. A first electromagnetic ball valve (not shown) is installed on the ventilation pipe 1 to control the opening and closing of the ventilation pipe 1.

[0030] A rotating pipe 2, which is a rigid pipe, sleeved on the right end of the ventilation pipe 1 (the end far from the hose on the ventilation pipe 1). The rotating pipe 2 is connected to the ventilation pipe 1 through a bearing 13, and their axes coincide. The outer ring of the bearing is fixedly connected to the rotating pipe 2, and the inner ring is fixedly connected to the ventilation pipe 1. Relying on the bearing 13, the rotating pipe 2 can rotate relative to the ventilation pipe 1 around the axis of the ventilation pipe 1. A first sealing ring 14 made of rubber is provided between the inner wall of the rotating pipe 2 and the outer wall of the ventilation pipe 1 to achieve sealing.

[0031] An external gear 3, sleeved and fixedly connected to the outer wall of the rotating pipe 2, whose axis coincides with the axis of the rotating pipe 2, and can rotate as a whole with the rotating pipe 2.

[0032] A servo motor 4, whose base is fixedly connected to the outer wall of the ventilation pipe 1. A speed reducer 15 is also installed on the outer wall of the ventilation pipe 1. The rotating shaft of the servo motor 4 is fixedly connected to the input end of the speed reducer 15, and the output end of the speed reducer is fixedly connected to a driving gear 5. The axis of the driving gear 5 coincides with the axis of the output end of the speed reducer 15. The servo motor 4 has a power-off self-locking function, and the driving gear 5 will not rotate freely in the non-driving state. The driving gear 5 meshes with the external gear 3, and the servo motor 4 drives the rotating pipe 2 to rotate through the two.

[0033] A paint folding pipe 6, passing through and fixed on the circumferential side of the ventilation pipe 1, which includes an inclined section 61 and a straight section 62. Among them, the inclined section 61 passes through the ventilation pipe 1 and is fixedly connected to the ventilation pipe 1. The straight section 62 is integrally arranged at one end of the inclined section 61 and is in the cavity of the ventilation pipe 1. The axis of the straight section 62 is parallel to the axis of the ventilation pipe 1. A second electromagnetic ball valve is installed on the inclined section 61. The second electromagnetic ball valve is located outside the ventilation pipe 1 to control the opening and closing of the paint folding pipe 6. One end of the inclined section 61 far from the straight section 62 is connected and communicated with a pressure vessel filled with paint through a hose.

[0034] The paint spray pipe 7 is in the cavity of the rotating pipe 2 and the vent pipe 1 at the same time, and the axis of the paint spray pipe 7 coincides with the axis of the two. One end of the paint spray pipe 7 is in the cavity of the straight section 62, and the other end is equipped with a spray head 8. The spray heads 8 of different shapes can make the sprayed paint present different shapes.

[0035] One end of the paint nozzle 7 facing the straight section 62 is movably clamped in the straight section 62, and the paint nozzle 7 can slide relative to the straight section 62. The specific structure is: a dovetail-shaped slider is fixedly connected to the outer wall of the paint nozzle 7, and a dovetail-shaped slide groove matching it is opened on the inner wall of the cavity of the straight section 62. The dovetail groove structure restricts the paint nozzle 7 to slide only along the axial direction, and the length of the slide groove is precisely designed to ensure that the paint nozzle 7 will not separate from the straight section 62. At the same time, a second sealing ring made of rubber material is sleeved on the outer wall of the paint nozzle 7, and the second sealing ring is against the inner wall of the cavity of the straight section 62 to ensure the sealing of the outer wall of the paint nozzle 7 and the inner wall of the cavity of the straight section 62 during the movement.

[0036] The threaded block 9 is fixedly connected to the inner wall of the cavity of the rotating tube 2 and rotates with the rotating tube 2 as a whole. A threaded hole 10 is opened in the middle of the threaded block 9, and the axis of the threaded hole 10 coincides with the axis of the rotating tube 2. The threaded block 9 is threadedly connected to the outer surface of the paint nozzle 7 by means of the threaded hole 10. When the aforementioned servo motor drives the rotating tube 2 to rotate, the threaded block 9 rotates accordingly. Since the threaded block 9 is threadedly connected to the paint nozzle 7, and the paint nozzle 7 can only slide along the axis of the paint nozzle 7 relative to the straight section 62, the rotating tube 2 can drive the paint nozzle 7 to move based on the linkage of the above components. When the servo motor 4 rotates forward, from the perspective of Figure 2, the paint nozzle 7 is provided with a nozzle 8, one end of which extends out of the rotating tube 2 to the right; when it is reversed, it retracts to the left and returns to its original position. The number of forward and reverse rotations of the motor is preset by the program to ensure that the paint nozzle 7 can be extended without being separated from the straight section 62.

[0037] A plurality of through holes 11 are provided on the threaded block 9 to ensure that the inner cavity of the vent pipe 1 is always connected with the inner cavity of the rotating pipe 2, thereby ensuring that Figure 2 From the perspective of the paint spraying tube 7, the gas in the cavity of the vent pipe 1 can be ejected from the right end of the rotating tube 2 through the through hole 11. In order to make the gas uniform, a plurality of through holes 11 are arranged in a circular array around the axis of the paint spraying tube 7.

[0038] The searchlight 12 is mounted on the outer wall of the ventilation pipe 1 to provide sufficient light when spraying paint in a dark place.

[0039] Operation process: The camera installed on the robotic arm will identify the coordinates of the position to be painted and feed back these coordinates to the control unit of the robotic arm. The control unit calculates the rotation angles of each servo on the robotic arm through inverse solution, so that the end of the paint spray pipe 7 on the robotic arm faces the position to be painted towards the nozzle.

[0040] After aligning with the painting position, the control unit controls the opening of the first electromagnetic ball valve. Due to the pressure difference, the gas in the high-pressure container is ejected. It passes through the ventilation pipe 1 and several through-holes on the threaded block in sequence, and finally is ejected from the end of the rotating pipe near the nozzle to blow the dust and debris on the surface of the object to be painted, reducing dust accumulation. The opening time of the first electromagnetic ball valve is t1, which is timed by the control unit. After the opening time reaches t1, the control unit controls the closing of the first electromagnetic ball valve. During the blowing process, the second electromagnetic ball valve is in the closed state. A compressor is installed on the high-pressure container filled with air, and a pressure gauge is equipped outside the high-pressure container. The control unit detects the value of the pressure gauge and controls the operation of the compressor to ensure the constant pressure inside the high-pressure container and ensure the blowing effect. The principle of maintaining a constant pressure in the subsequent painting part is the same and will not be elaborated.

[0041] Then, the control unit controls the servo motor 4 to rotate forward a certain number of turns (Q turns), so that the nozzle penetrates through the corresponding end of the rotating pipe. When the number of turns of the servo motor reaches Q turns, it stops automatically, and the nozzle remains in the state of protruding from the rotating pipe.

[0042] Then, the control unit controls the opening of the second electromagnetic ball valve. Due to the pressure difference, the paint in the high-pressure container is ejected. It passes through the inclined section and the horizontal section and is ejected from the end of the paint spray pipe 7 towards the nozzle to spray paint on the position to be painted. The camera installed on the robotic arm continuously takes pictures of the painted area, and the neural network continuously identifies the images. If 80% of the pixels in the image are painted, the painting is completed. After the painting is completed, the control unit controls the closing of the second electromagnetic ball valve. Then, it controls the servo motor 4 to rotate backward Q turns to retract the nozzle back into the cavity of the rotating pipe again.

[0043] Finally, the camera on the robotic arm continues to identify the coordinates of another position to be painted and repeats the above process until all positions to be painted have been painted.

[0044] The advantages of this device are as follows: When in use, the paint spray pipe 7 of this structure protrudes from the rotating pipe 2, and when not in use, it retracts into the cavity of the rotating pipe 2, which can be applicable to narrow painting spaces. At the same time, during the non-use stage, it avoids the contamination of the paint spray pipe 7 by sundries.

[0045] Embodiment 2: A dust-removing telescopic double-layer paint spray head structure, which is different from Embodiment 1. In this embodiment, multiple spray heads with different shapes are integrated into a whole through a spherical housing, and each spray head works independently. Since the paint spraying shapes of each spray head are different (linear, fan-shaped, and conical), the spray head can selectively spray paint or jet air.

[0046] The housing is fixedly connected to the robotic arm. The housing is fixedly connected to the outer wall of the air pipe 1 of each spray head structure.

[0047] Moreover, a three-way valve is installed at one end of the inclined section of the paint folding pipe 6 away from the straight section. The outlet of the three-way valve is connected to the inclined section, and the other two inlets are respectively connected to a paint pressure vessel and a cleaning agent pressure vessel through hoses. Electromagnetic ball valves are installed on the two inlets of the three-way valve, and the two electromagnetic ball valves are respectively controlled by the control unit to open and close, so as to realize the passage of paint or cleaning agent into the paint folding pipe 6. After all spraying operations are completed, under the control logic of the control unit, the control unit opens the corresponding electromagnetic ball valve and closes the other electromagnetic ball valve, so that the cleaning agent enters the paint spray pipe 7 and finally sprays out from the end of the paint spray pipe 7 away from the paint folding pipe 6, realizing the cleaning of the inner wall of the paint folding pipe 6.

[0048] In order to prevent the searchlight in Embodiment 1 from being blocked by the housing, the searchlight is installed on the outer side wall of the housing. Three spray head structures share one searchlight.

[0049] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can make various changes and modifications within the scope not deviating from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A dust-removable retractable double-layer paint spray head structure, characterized in that: Includes the following structures: A vent pipe, one end of which is connected to and communicated with a pressure vessel filled with air through a hose; a first electromagnetic ball valve is installed on the vent pipe; A rotating tube, one end of which is sleeved on the other end of the ventilation pipe and can rotate relative to the ventilation pipe around the axis of the ventilation pipe; A servo motor, the base of which is mounted on the vent pipe, is used to drive the rotating pipe to rotate; The paint folding tube comprises an inclined section and a straight section, wherein the inclined section is inserted into the vent pipe, the straight section is located in the vent pipe cavity, one end of the straight section is connected and communicated with one end of the inclined section located in the vent pipe cavity, and the axis of the straight section is parallel to the axis of the vent pipe; one end of the inclined section away from the straight section is connected and communicated with a pressure container filled with paint through a hose; a second electromagnetic ball valve is installed on the inclined section; The paint nozzle is in the cavity of the rotating tube and the vent tube at the same time, one end of the paint nozzle is in the cavity of the straight section, and the other end is equipped with a nozzle; the paint nozzle is movably mounted on the straight section, and the paint nozzle can only slide relative to the paint nozzle along the axis of the paint nozzle; through the movement of the paint nozzle, the nozzle can extend from the other end of the rotating tube or retract into the rotating tube cavity; The thread block is fixedly connected to the inner wall of the rotating tube cavity; a threaded hole is provided on the thread block, and the rotating tube is threadedly connected to the paint spray pipe through the threaded hole on the thread block; The through hole is arranged on the threaded block and is used to ensure that the ventilating tube cavity is always connected with the rotating tube cavity.

2. The dust-removable retractable double-layer paint spray head structure according to claim 1, characterized in that: The rotating tube is connected to the ventilation tube through a bearing, the outer ring of the bearing is fixedly connected to the rotating tube, and the inner ring is fixedly connected to the ventilation tube.

3. The dust-removable retractable double-layer paint spray head structure according to claim 1, characterized in that: A first sealing ring made of rubber material is arranged between the inner wall of the rotating tube and the outer wall of the ventilation tube. The first sealing ring is sleeved on the outer wall of the ventilation tube and abuts against the inner wall of the rotating tube.

4. The dust-removable retractable double-layer paint spray head structure according to claim 1, characterized in that: A dovetail-shaped slider is fixedly connected to the outer wall of the paint nozzle, and a matching dovetail-shaped slide groove is opened on the inner wall of the straight section cavity. The dovetail groove structure restricts the paint nozzle to slide only along the axial direction; by designing the length of the slide groove, it is ensured that the paint nozzle will not leave the straight section.

5. The dust-removable retractable double-layer paint spray head structure according to claim 1, characterized in that: A second sealing ring made of rubber is sleeved on the outer wall of the paint spray pipe, and the second sealing ring abuts against the inner wall of the straight section cavity.

6. The dust-removable telescopic double-layer paint spray head structure according to claim 1, characterized in that: There are a plurality of through holes, which are arranged in a circular array around the axis of the paint spray pipe.

7. The dust-removable telescopic double-layer paint spray head structure according to claim 1, characterized in that: The nozzle structure can be arranged in plurality, and the plurality of nozzle structures are integrated into a whole through the housing.

8. The dust-removable telescopic double-layer paint spray head structure according to claim 7, characterized in that: The utility model also comprises a searchlight which is fixedly connected to the outer shell or the vent pipe.

9. The dust-removable telescopic double-layer paint spray head structure according to claim 7, characterized in that: A three-way valve is installed at one end of the paint folded pipe inclined section away from the straight section, the outlet of the three-way valve is connected with the inclined section, and the other two inlets are connected with the paint pressure container and the cleaning agent pressure container through hoses.

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