Spraying device used after surface treatment of shot blasting machine

Abstract

The invention discloses a spraying device used after surface treatment of a shot blasting machine, the spraying device comprises a central sleeve, a telescopic rod, a sliding wheel, a knob and other parts and has the functions of automatic folding and quick disassembly, the telescopic rod is of a hollow structure, and the front end of the telescopic rod is provided with an embedded cavity for a sliding wheel support to rotate. The sliding wheel is axially hinged to the sliding wheel support and hinged to the telescopic rod through the horizontal rotating shaft, so that the sliding wheel can rotate from the working state to the storage state, the rotary knob drives the gear meshing set through the rotary knob rotating shaft, the sliding wheel support is driven to turn over, 90-degree folding of the sliding wheel is achieved, and the support limiting hole and the limiting pin are automatically locked. The pressing button at the top of the rotary knob can relieve clamping of the limiting pin and the support limiting hole, the sliding wheel is convenient to disassemble or replace, and the folding device has the advantages of being compact in structure, easy and convenient to operate, convenient and fast to maintain and the like.

Description

Technical Field

[0001] This invention relates to the field of paint spraying equipment technology, specifically to a spraying device for surface treatment after shot blasting. Background Technology

[0002] In current shot blasting machine surface treatment equipment, paint spraying devices are usually used as a subsequent process to coat the cleaned workpiece to enhance its corrosion resistance, aesthetics, or other functional effects. In current paint spraying equipment, sliding wheels play a crucial role as support and moving components during the operation of the equipment.

[0003] In such spraying equipment, the rollers, as supporting and moving components, play a crucial role in the operation of the equipment and the switching of workstations. However, in existing spraying equipment, most rollers adopt a fixed structure or a non-foldable design, which makes them susceptible to damage from the external environment when used in conjunction with shot blasting machines, or during frequent movement or adjustment.

[0004] Specifically, during the process of moving the equipment to the shot blasting area or transferring it after processing, the sliding wheels often come into contact with uneven ground, metal residue, hard objects, or obstacles, which can easily cause impact, wear, or deformation. Especially in harsh industrial environments, such as work areas containing paint fumes, metal particles, and chemical solvents, these substances can cause corrosion, adhesion, and mechanical damage to the sliding wheels, thereby affecting their function and service life.

[0005] Furthermore, as a post-processing device following shot blasting, spraying equipment often requires frequent repositioning or movement into and out of workstations. Fixed sliding wheels, constantly exposed, are inconvenient to store, easily damaged, and can even affect the loading, transportation, or storage of the equipment. Therefore, the problem of existing spraying equipment's sliding wheels being unable to be folded, stored, or quickly disassembled urgently needs to be solved. Summary of the Invention

[0006] The purpose of this invention is to provide a spraying device for surface treatment after shot blasting, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a spraying device for surface treatment after shot blasting, comprising a central sleeve, a telescopic rod, a sliding wheel, and a knob. The telescopic rod has a hollow structure with an embedded cavity at the front end for the sliding wheel bracket to rotate. The sliding wheel is rotatably mounted on the sliding wheel bracket by axial hinge. The sliding wheel bracket and the telescopic rod are hinged together by a horizontal pivot, so that the sliding wheel can rotate around the pivot from the working state to the retracted state perpendicular to the telescopic rod.

[0008] According to the above technical solution, the knob is set on the side wall of the telescopic rod, the knob shaft is in contact with the gear meshing group, the gear meshing group is engaged with the rack structure on the sliding wheel bracket, and when the knob is rotated, the gear meshing group drives the sliding wheel bracket to flip, thereby realizing the 90° folding of the sliding wheel.

[0009] According to the above technical solution, the sliding wheel is folded and set perpendicular to the telescopic rod.

[0010] According to the above technical solution, the gear meshing assembly is provided with a bracket limiting hole, the bracket limiting hole and the limiting pin are precisely aligned, and the limiting pin is automatically sprung into the bracket limiting hole by the elastic force provided by the compression spring.

[0011] According to the above technical solution, the limiting pin is an elastic element that can overcome the elastic force of the spring assembly under the action of external force, thereby releasing the engagement with the limiting hole of the bracket.

[0012] According to the above technical solution, the knob is equipped with a pressing structure. The user can press the button on the top of the knob to force the limiting pin to retract against the spring force, release the engagement with the limiting hole of the bracket, and release the rotational freedom of the sliding wheel bracket.

[0013] According to the above technical solution, the sliding wheel is connected to the sliding wheel bracket by an axial hinge.

[0014] According to the above technical solution, the sliding wheel can be tightly fitted with other components of the device after folding, so as to realize the overall storage of the device, and can be automatically unfolded in the working state.

[0015] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: This invention, through the provision of a bracket limiting hole and a locking pin mechanism, achieves precise locking of the sliding wheel bracket during folding, effectively preventing the sliding wheel from accidentally unfolding during use. Compared with existing technologies, the locking method of this invention has the following advantages: 1. Simple structure and easy operation: The design of using a knob to operate and pressing a button to release the locking pin simplifies the operation process, allowing users to easily fold and unlock the wheels without complicated tools or extra steps; 2. High reliability: The mechanical locking method of the limiting hole and locking pin has strong durability and stability. Even under high load or long-term use, it can still maintain a firm locking effect, avoiding the problem of traditional sliding wheels being easy to loosen or fall off. 3. Enhanced safety: The spring-loaded design of the locking pin ensures that the locking pin will not easily come off even under external force, providing higher safety and avoiding malfunctions of the sliding wheel due to movement or external interference; 4. Compact structure and strong adaptability: The design of this invention can be applied to various telescopic rods or pipe structures, and does not require an additional large area of ​​space, so it can work effectively in environments with limited space. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a cross-sectional view of the sliding wheel and telescopic rod in a spraying device used after shot blasting surface treatment; Figure 2 A top view of a spraying device used after surface treatment by a shot blasting machine; Figure 3 This is an exploded view of a sliding wheel and telescopic rod in a spraying device used after shot blasting surface treatment.

[0017] In the picture: 1. Center sleeve; 2 telescopic rods, 21 embedded cavity; 3. Sliding wheel, 31. Sliding wheel bracket, 32. Gear meshing assembly, 33. Limiting pin, 34. Spring assembly, 35. Bracket limiting hole; 4 knobs, 41 knobs rotating shaft; 5. Paint pipe, 6. Preheating coil, 7. Air extraction pipe, 8. Air inlet pipe, 9. Sewage suction tray, 10. Hot air hole, 11. Cleaning tray, 12. Connecting shaft, 13. Hot air pipe. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Reference Figure 1-3A spraying device for surface treatment after shot blasting includes a central sleeve 1, a telescopic rod 2, a sliding wheel 3, a knob 4, a paint pipe 5, a preheating coil 6, an exhaust pipe 7, an air inlet pipe 8, a suction tray 9, a hot air hole 10, a cleaning tray 11, a connecting shaft 12, a hot air pipe 13, an embedded cavity 21, a sliding wheel bracket 31, a knob rotating shaft 41, a gear meshing assembly 32, a limiting pin 33, a spring assembly 34, and a bracket limiting hole 35. In this structure, the telescopic rod 2 is hollow, and its front end is provided with an embedded cavity 21 for the sliding wheel bracket 31 to rotate. The sliding wheel 3 is rotatably mounted on the sliding wheel bracket 31 by axial hinge. The sliding wheel bracket 31 and the telescopic rod 2 are hinged together by a horizontal rotating shaft, allowing the sliding wheel 3 to rotate around the rotating shaft from an axial working state to a retracted state perpendicular to the telescopic rod 2.

[0020] Preferably, the knob 4 is located on the side wall of the telescopic rod 2. The knob 4 passes through the internal space of the telescopic rod 2 via a knob shaft 41. A gear engagement group 32 is provided below the knob shaft 41. The gear engagement group 32 engages with the rack structure on the sliding wheel bracket 31, thereby forming a rotational linkage mechanism. When the knob 4 is rotated clockwise, the gear engagement group 32 drives the sliding wheel bracket 31 to rotate around the shaft, realizing a 90° folding of the sliding wheel 3. This structure not only realizes the automatic folding function, but also controls the folding angle, significantly improving the compactness of the device in the storage or transportation state.

[0021] Furthermore, the lower end of the gear meshing assembly 32 is provided with a bracket limiting hole 35. When the knob 4 is rotated to the preset folding position, the bracket limiting hole 35 and the limiting pin 33 are precisely aligned. The limiting pin 33 is located at the lower left of the gear meshing assembly 32. The limiting pin 33 is a cylindrical structure arranged vertically, with a positioning shoulder at its upper end. A compression spring is provided between the positioning shoulder and the mounting hole of the limiting pin. One end of the compression spring abuts against the shoulder of the limiting pin 33, and the other end abuts against the stop surface above the sliding hole. When not pressed or subjected to external force, it continuously applies a spring force downward to the limiting pin 33. The limiting pin 33 automatically springs into the bracket limiting hole 35 by the spring force provided by the compression spring, realizing a mechanical self-locking function and effectively preventing the sliding wheel from loosening or rebounding in the folded state. This structure is different from the existing design that relies only on friction or external fixing buckles, and has higher stability and vibration resistance.

[0022] Furthermore, to improve the maintainability of the pulley, knob 4 is equipped with a pressing mechanism. Users can press down on the top button of the knob to force the limit pin 33 to retract against the spring force, thereby releasing its engagement with the bracket limit hole 35. At this time, the pulley bracket 31 is in the unlocked state, allowing the user to unfold the pulley 3 as a whole or quickly disassemble and replace it along the pin direction. This operation is simple, requires no tools, and facilitates quick on-site replacement of damaged pulleys or removal of foreign objects.

[0023] Specifically, the folding and disassembly process of the sliding wheel 3 is achieved through the coordinated operation of the knob 4 control mechanism, the gear meshing group 32, and the limiting locking device (limiting pin 33, spring assembly 34, bracket limiting hole 35), which has the advantages of simple operation, reliable action, and convenient maintenance. When it is necessary to fold the sliding wheel 3 to the storage state, the knob 4 located on one side of the telescopic rod 2 is manually rotated. At this time, the knob shaft 41 inside the knob 4 is connected to the gear meshing group 32, and the gear meshing group 32 further meshes with the rack structure located on one side of the sliding wheel bracket 31. As the knob 4 is rotated, the gear meshing group 32 drives the rack structure of the sliding wheel bracket 31, thereby causing the sliding wheel bracket 31 to rotate around the horizontal axis, so that the sliding wheel 3 gradually changes from its original working state along the axial direction of the telescopic rod 2 to a folded state perpendicular to the telescopic rod 2. The rotation angle is 90°, and the sliding wheel bracket 31 rotates with the sliding wheel 3. When the sliding wheel bracket 31 rotates to the preset position, the bracket limiting hole 35 on the gear meshing assembly 32 will be precisely aligned with the limiting pin 33. Under the elastic force of the compression spring, the limiting pin 33 will automatically spring into the bracket limiting hole 35, forming a reliable mechanical lock, thereby preventing the sliding wheel 3 from springing back due to external impact or device movement. If the sliding wheel 3 needs to be unfolded or disassembled for replacement, the user can press down the pressing button on the top of the knob 4. This button will cause the limiting pin 33 to retract to the unlocked state against the elastic force of the spring assembly 34, thereby releasing the rotational freedom of the sliding wheel bracket 31. At this time, the knob 4 can be rotated in the opposite direction to make the sliding wheel 3 rotate back to the working position, or the sliding wheel bracket 31 can be pulled out as a whole for quick replacement.

[0024] As a preferred embodiment of the present invention: outside the central sleeve 1, a paint pipe 5, an exhaust pipe 7, an air inlet pipe 8, and a hot air pipe 13 are also provided for auxiliary functions of spraying and cleaning. One end of the paint pipe 5 is inserted into the interior of the central sleeve 1, and the end away from the central sleeve 1 is connected to an external paint conveying device to realize the paint conveying function; one end of the exhaust pipe 7 extends into the central sleeve 1, and the far end is connected to an exhaust device. The exhaust pipe 7 also passes through the connecting shaft 12 to drain the bottom sludge; the structure of the air inlet pipe 8 is similar to that of the exhaust pipe 7. One end extends into the central sleeve 1, the far end is connected to an air pump, and it passes through the connecting shaft 12 from the side near the suction plate 9 to realize positive pressure air supply.

[0025] The suction disc 9 is mounted on the lower end of the central sleeve 1 via the connecting shaft 12. A preheating ring 6 is provided around the suction disc 9. The preheating ring 6 has a ring structure with multiple hot air holes 10 evenly distributed on its outward side to ensure uniform distribution of hot air. A hot air chamber is provided inside the preheating ring 6, and the hot air chamber is connected to the hot air conveying equipment through a hot air pipe 13.

[0026] A cleaning disc 11 is provided on the side of the suction disc 9 away from the central sleeve 1. The cleaning disc 11 is used to receive and process dust particles in the working area. The cleaning disc 11 and the suction disc 9 can adopt a movable hinge structure for easy cleaning and disassembly.

[0027] The entire device can be compactly stored in its non-operational state through the folding mechanism of the telescopic rod 2 and the sliding wheels 3, improving the convenience of movement and transportation. At the same time, the quick-release structure of the sliding wheels 3 can improve maintenance efficiency. In the operating state, multiple sliding wheels 3 unfold to stably support the main body of the device, the preheating coil 6 realizes the temperature control auxiliary function, and the exhaust pipe 7 and the intake pipe 8 form an internal airflow circulation system, which is conducive to the stability of the on-site spraying and cleaning process environment.

[0028] Through the above structural optimizations, while ensuring mobility and foldability, it also takes into account the functions required for the spraying process, such as conveying, exhaust, and temperature control. It has significant advantages such as multi-functional integration, modular design, compact structure, and convenient assembly, and is suitable for support and mobile components of various portable industrial equipment.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A spraying device for surface treatment after shot blasting, comprising a central sleeve (1), a telescopic rod (2), a sliding wheel (3), and a knob (4), characterized in that: The telescopic rod (2) has a hollow structure and an embedded cavity (21) at the front end for the sliding wheel bracket (31) to rotate. The sliding wheel (3) is rotatably mounted on the sliding wheel bracket (31) by axial hinge. The sliding wheel bracket (31) and the telescopic rod (2) are connected by a horizontal pivot, so that the sliding wheel (3) can rotate around the pivot from the working state to the storage state perpendicular to the telescopic rod (2).

2. The spraying device for surface treatment after shot blasting according to claim 1, characterized in that: The knob (4) is located on the side wall of the telescopic rod (2). The knob shaft (41) is in contact with the gear meshing group (32). The gear meshing group (32) meshes with the rack structure on the sliding wheel bracket (31). When the knob (4) is rotated, the gear meshing group (32) drives the sliding wheel bracket (31) to flip, thereby realizing the 90° folding of the sliding wheel (3).

3. A spraying device for surface treatment after shot blasting according to claim 2, characterized in that: The sliding wheel (3) is folded and set perpendicular to the telescopic rod (2).

4. A spraying device for surface treatment after shot blasting according to claim 1, characterized in that: The gear meshing assembly (32) is provided with a bracket limiting hole (35) below it. The bracket limiting hole (35) and the limiting pin (33) are precisely aligned. The limiting pin (33) is automatically pushed into the bracket limiting hole (35) by the elastic force provided by the compression spring.

5. A spraying device for surface treatment after shot blasting according to claim 1, characterized in that: The limiting pin (33) is an elastic element that can overcome the elastic force of the spring assembly (34) under the action of external force, thereby releasing the engagement with the bracket limiting hole (35).

6. A spraying device for surface treatment after shot blasting according to claim 5, characterized in that: The knob (4) is equipped with a pressing structure. The user can press the button on the top of the knob to force the limiting pin (33) to retract against the spring force, release the engagement with the bracket limiting hole (35), and release the rotational freedom of the sliding wheel bracket (31).

7. A spraying device for surface treatment after shot blasting according to claim 1, characterized in that: The sliding wheel (3) is connected to the sliding wheel bracket (31) by an axial hinge.

8. A spraying device for surface treatment after shot blasting according to claim 1, characterized in that: The sliding wheel (3) can be tightly fitted with other parts of the device after folding, so as to realize the overall storage of the device, and can be automatically unfolded in the working state.

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