Polyurethane spraying device

Abstract

The utility model relates to the technical field of spraying devices, and discloses a polyurethane spraying device which comprises a spray gun, a fixed plate is fixedly connected to a nozzle of the spray gun, a sleeve is rotatably connected to the fixed plate, openings for polyurethane materials to pass through are formed in the fixed plate and the sleeve respectively, the two openings are coaxial with the nozzle of the spray gun, and the nozzle of the spray gun is fixedly connected with the fixed plate. A plurality of baffles arranged at equal intervals in the circumferential direction are arranged in the sleeve, and a control assembly used for controlling the baffles to move is arranged in the sleeve. When the polyurethane spraying device provided by the utility model is applied, the adjusting range of the spraying caliber of the spraying gun is wide, the spraying caliber is more adaptive to the area to be covered of an object, a worker can flexibly adjust the spraying caliber according to specific requirements, the spraying effect and the spraying efficiency are improved, and the applicability and the flexibility of spraying equipment are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying devices, in particular to a polyurethane spraying device. Background Art

[0002] Polyurethane is a polymer material formed by the polycondensation reaction of polyols and polyisocyanates and has excellent mechanical properties. It has extremely strong plasticity. Soft polyurethane has smaller compression deformation, good heat insulation, sound insulation, earthquake resistance, and anti-toxic properties. Therefore, it is used as packaging, sound insulation, and filtering materials. Rigid polyurethane plastics are light in weight, have excellent sound insulation and heat insulation properties, are resistant to chemical drugs, have good electrical properties, are easy to process, and have low water absorption.

[0003] After retrieval, a multi-tube layer type gas spray gun with the publication number of CN204829914U includes a main gas spray gun pipe. The end of the main gas spray gun pipe is connected to a flame stabilizer. The front end of the main gas spray gun pipe is provided with a plurality of gas spray gun branch pipes. The gas spray gun branch pipes are evenly distributed on the main gas spray gun pipe, and the diameters of the gas spray gun branch pipes are different. This solution has a simple structure, can realize gas spraying with different diameters, and the spray pipes with different diameters do not interfere with each other. However, when the above technical solution is actually used, there are still the following deficiencies:

[0004] This prior art is provided with a plurality of branch pipes to change the spraying diameter. However, considering the weight or volume of the spray gun, the number of branch pipes that can be accommodated on the spray gun is small, that is, the types of spraying diameters that can be adjusted are few, the adjustment accuracy is poor, and the adjustment range is narrow. In this way, for objects with different coverage areas, there may be a mismatch between the object and the spraying diameter. If the spraying diameter is small, the paint flow is insufficient, and it takes more time to complete the painting, which will affect the spraying efficiency. If the spraying diameter is large, the paint may exceed the surface of the object, resulting in paint waste. Secondly, the setting of a plurality of branch pipes increases the occupied space at the nozzle of the spray gun, which may cause it difficult for the branch pipes to reach some dead corners or deeper spraying areas, affecting the applicability and flexibility of the spray gun.

[0005] Therefore, it is necessary to design a polyurethane spraying device to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a polyurethane spraying device.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A polyurethane spraying device includes a spray gun. A fixing plate is fixedly connected to the nozzle of the spray gun. A sleeve is rotatably connected to the fixing plate. Both the fixing plate and the sleeve are provided with openings for the polyurethane material to pass through, and the two openings are coaxial with the nozzle of the spray gun. A plurality of baffles are arranged at equal intervals in the circumferential direction inside the sleeve, and a control component for controlling the movement of the baffles is arranged inside the sleeve.

[0009] As a preferred technical solution of the present utility model, the control component includes a guiding column fixedly connected to the baffle. A plurality of arc-shaped guiding grooves with the same number as the guiding columns are arranged on the inner top surface of the sleeve. The guiding column is located inside the arc-shaped guiding groove. A slider is fixed to the bottom of the baffle. A plurality of sliding grooves with the same number as the sliders are arranged on the fixing plate, and the slider is slidably connected inside the sliding groove. The control component further includes a fixing piece for fixing the position of the sleeve.

[0010] As a preferred technical solution of the present utility model, the fixing piece includes two chambers arranged inside the sleeve. A moving plate is arranged inside the chamber. A spring is jointly fixed between the top surface of the moving plate and the inner top surface of the chamber. A plug rod is fixedly connected to the bottom of the moving plate. The bottom end of the plug rod extends below the sleeve, and the plug rod is slidably connected to the sleeve. A connecting rod and a driving block with a triangular cross-section are further arranged inside the chamber. The driving block is fixedly connected to the connecting rod. One end of the connecting rod extends outside the sleeve, and an extrusion plate is fixed to the end of the connecting rod located outside the sleeve. A plurality of slots adapted to the plug rod are arranged on the fixing plate.

[0011] As a preferred technical solution of the present utility model, the two extrusion plates are symmetrically arranged, and the cross-section of the extrusion plate is in a fan-shaped structure.

[0012] As a preferred technical solution of the present utility model, anti-slip patterns are arranged on the opposite side walls of the two extrusion plates.

[0013] As a preferred technical solution of the present utility model, scale lines are arranged on the side wall of the fixing plate, and reference lines are arranged on the side wall of the sleeve.

[0014] The present utility model has the following beneficial effects:

[0015] 1. Wide adjustment range: Through the cooperation of components such as the extrusion plate, connecting rod, and driving block, a wide range of adjustment of the spraying diameter can be achieved. In this way, the staff can flexibly adjust the spraying diameter according to specific requirements, adapt to objects of different sizes, and improve the spraying effect;

[0016] 2. Improved spraying efficiency: After adjusting the caliber, the spraying caliber is more suitable for the area to be covered by the object, avoiding the problems of low efficiency or paint waste caused by too large or too small spraying caliber. This helps to improve the spraying efficiency and save paint costs;

[0017] 3. Less space occupied: The component for adjusting the caliber is set at the spray nozzle of the spray gun. The structure is simple and compact, and it will not increase the occupied space at the spray nozzle of the spray gun. This is very suitable for scenarios where the spraying area is relatively narrow or flexible operation is required, improving the applicability and flexibility of the spraying equipment;

[0018] 4. Easy to operate: Compared with replacing nozzles of different calibers in other existing technologies, the operation of adjusting the caliber in this solution is relatively simple. For scenarios where the caliber needs to be changed frequently, the staff only needs to press the extrusion plate and rotate the sleeve to complete the adjustment, without having to select and install the appropriate nozzle multiple times for disassembly and installation operations, simplifying the operation steps and improving the convenience and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a polyurethane spraying device proposed by the present utility model;

[0020] Figure 2 is Figure 1 a partial structural diagram of;

[0021] Figure 3 is an exploded view of the control component;

[0022] Figure 4 is an exploded view of the control component from another perspective;

[0023] Figure 5 is a schematic internal structure diagram of the sleeve and the fixing plate, including a partial structural diagram of the fixing member.

[0024] In the figure: 1 spray gun, 2 fixing plate, 3 sleeve, 4 opening, 5 baffle, 6 guide post, 7 arc-shaped guide groove, 8 slider, 9 chute, 10 chamber, 11 insertion rod, 12 moving plate, 13 spring, 14 extrusion plate, 15 connecting rod, 16 driving block, 17 slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0026] Refer to Figures 1-5, a polyurethane spraying device, including a spray gun 1. A fixing plate 2 is fixedly connected to the nozzle of the spray gun 1. A sleeve 3 is rotatably connected to the fixing plate 2. Openings 4 for the passage of polyurethane material are provided on both the fixing plate 2 and the sleeve 3, and the two openings 4 are coaxial with the nozzle of the spray gun 1. A plurality of baffles 5 are arranged at equal circumferential intervals inside the sleeve 3, and a control component for controlling the movement of the baffles 5 is provided inside the sleeve 3.

[0027] Referring to Figure 3 and Figure 4 , the control component includes a guiding column 6 fixedly connected to the baffle 5. A plurality of arc-shaped guiding grooves 7 with the same number as the guiding columns 6 are provided on the inner top surface of the sleeve 3. The guiding column 6 is located inside the arc-shaped guiding groove 7. A slider 8 is fixedly connected to the bottom of the baffle 5. A plurality of sliding grooves 9 with the same number as the sliders 8 are provided on the fixing plate 2, and the slider 8 is slidably connected inside the sliding groove 9. The cooperation between the sliding groove 9 and the slider 8, and the cooperation between the arc-shaped guiding groove 7 and the guiding column 6 both play a role in limiting and guiding the movement of the baffle 5. All the baffles 5 can be operated to gather or disperse, so as to change the spraying diameter, improve the application range and spraying accuracy of the device. The control component also includes a fixing member for fixing the position of the sleeve 3.

[0028] Referring to Figure 5 , the fixing member includes two chambers 10 provided inside the sleeve 3. A moving plate 12 is provided inside the chamber 10. A spring 13 is jointly fixed between the top surface of the moving plate 12 and the inner top surface of the chamber 10. A plug rod 11 is fixedly connected to the bottom of the moving plate 12. The bottom end of the plug rod 11 extends below the sleeve 3, and the plug rod 11 is slidably connected to the sleeve 3. A connecting rod 15 and a driving block 16 with a triangular cross-section are also provided inside the chamber 10. The driving block 16 is fixedly connected to the connecting rod 15. One end of the connecting rod 15 extends outside the sleeve 3, and an extrusion plate 14 is fixed to the end of the connecting rod 15 located outside the sleeve 3. A plurality of slots 17 adapted to the plug rods 11 are provided on the fixing plate 2. The slots 17 are arranged at equal circumferential intervals. The cooperation between the slots 17 and the plug rods 11 can fix the sleeve 3. During operation, the staff only needs to press the extrusion plate 14 and rotate for adjustment, which is simple to operate and improves the efficiency of the spraying operation.

[0029] Referring to Figure 2 , the two extrusion plates 14 are symmetrically arranged, and the cross-section of the extrusion plate 14 is in a fan-shaped structure, which increases the contact area between the extrusion plate 14 and the staff's hand and ensures the convenience of screwing the sleeve 3.

[0030] Referring to Figure 2 , anti-slip patterns are provided on the opposite side walls of the two extrusion plates 14, which increases the friction between the staff's hand and the extrusion plate 14 and facilitates the staff to perform the screwing operation.

[0031] Referring toFigure 2 On the side wall of the fixing plate 2, there are scale lines, and on the side wall of the sleeve 3, there are reference lines. By using the scale lines and reference lines, when adjusting the spraying diameter, the staff does not need to adjust at the front of the spray nozzle, which simplifies the operation process and reduces the safety hazards caused by the spray nozzle facing the staff at the same time.

[0032] The specific working principle of the present utility model is as follows:

[0033] When it is necessary to change the spraying diameter, the staff presses two pressing plates 14, and the two pressing plates 14 move towards each other, driving the connecting rod 15 and the driving block 16 to move. The driving block 16 presses the moving plate 12. Under the action of the inclined surface of the driving block 16, the moving plate 12 and the inserting rod 11 will move upward. At this time, the bottom end of the inserting rod 11 will move out of the slot 17. Subsequently, the staff continuously presses the pressing plate 14 and rotates the sleeve 3. The sleeve 3 drives the arc-shaped guiding groove 7 to rotate. The inner side of the arc-shaped guiding groove 7 will press the guiding column 6, causing the guiding column 6 to move along the shape trajectory of the arc-shaped guiding groove 7, and then driving the baffle 5 to move together. Under the limiting action of the slider 8 and the sliding groove 9, the guiding column 6 and the baffle 5 will rotate while moving. In this way, all the baffles 5 will gather or move away simultaneously, realizing the closing or opening action for the spray nozzle of the spray gun 1. The rotation angle of the sleeve 3 is different, and the gathering degree of the baffles 5 is different. In this way, the space for the polyurethane material to pass through between the baffles 5 is also different, thus achieving the purpose of adjusting the spraying diameter of the spray gun 1, and the adjustment range is wide. The spraying diameter of the spray gun 1 has a high adaptability to the area to be covered by the object, which avoids the waste of polyurethane paint while ensuring the spraying efficiency;

[0034] After adjusting to the appropriate diameter, the staff releases the pressing plate 14. Under the elastic force of the spring 13, the inserting rod 11 moves downward to reset, and the bottom end of the inserting rod 11 is inserted into the slot 17 at the corresponding position, thereby fixing the position of the sleeve 3. This diameter adjustment part is arranged at the spray nozzle of the spray gun 1, with a simple structure and no increase in the occupied space at the spray nozzle of the spray gun 1, and it is applicable to a wide range of spraying areas.

[0035] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A polyurethane spraying device, comprising a spray gun (1), characterized in that: A fixed plate (2) is fixedly connected to the nozzle of the spray gun (1), a sleeve (3) is rotatably connected to the fixed plate (2), openings (4) for the polyurethane material to pass through are provided on both the fixed plate (2) and the sleeve (3), and the two openings (4) are coaxial with the nozzle of the spray gun (1), a plurality of baffles (5) are arranged at equal intervals in the circumferential direction, and a control component for controlling the movement of the baffles (5) is provided inside the sleeve (3).

2. A polyurethane spraying device according to claim 1, characterized in that: The control assembly comprises a guide column (6) fixedly connected to the baffle (5); the inner top surface of the sleeve (3) is provided with a plurality of arc-shaped guide grooves (7) whose number is the same as the guide columns (6); the guide columns (6) are located inside the arc-shaped guide grooves (7); a slider (8) is fixed to the bottom of the baffle (5); the fixed plate (2) is provided with a plurality of slide grooves (9) whose number is the same as the slide grooves (8); and the slide grooves (8) are slidably connected inside the slide grooves (9); the control assembly also comprises a fixing member, which is used to fix the position of the sleeve (3).

3. A polyurethane spraying device according to claim 2, characterized in that: The fixing member comprises two chambers (10) arranged in the sleeve (3), a movable plate (12) is arranged inside the chamber (10), a spring (13) is fixed between the top surface of the movable plate (12) and the inner top surface of the chamber (10), a plug rod (11) is fixedly connected to the bottom of the movable plate (12), the bottom end of the plug rod (11) extends to the bottom of the sleeve (3), and the plug rod (11) is slidably connected to the sleeve (3), a connecting rod (15) and a driving block (16) with a triangular cross-section are also arranged inside the chamber (10), the driving block (16) is fixedly connected to the connecting rod (15), one end of the connecting rod (15) extends to the outside of the sleeve (3), and an extrusion plate (14) is fixed to the end of the connecting rod (15) located outside the sleeve (3), and a plurality of slots (17) adapted to the plug rod (11) are provided on the fixing plate (2).

4. A polyurethane spraying device according to claim 3, characterized in that: The two extrusion plates (14) are symmetrically arranged, and the cross section of the extrusion plate (14) is a fan-shaped structure.

5. A polyurethane spraying device according to claim 4, characterized in that: Anti-slip grooves are provided on the opposite side walls of the two extrusion plates (14).

6. A polyurethane spraying device according to claim 1, characterized in that: The side wall of the fixing plate (2) is provided with scale lines, and the side wall of the sleeve (3) is provided with reference lines.

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