Polishing brush quick-release structure of plate brushing machine
By designing a quick-release structure for the brush on the brushing machine, and utilizing the combination of the break thread and the locking nut, the brush can be quickly disassembled, solving the problem of cumbersome brush disassembly in existing brushing machines, improving production efficiency and reducing labor costs.
Patent Information
- Application Number
- CN202610075842.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-20
- Publication Date
- 2026-03-06
AI Technical Summary
The existing brush disassembly and reassembly operations of the brushes in the brushing machine are cumbersome, resulting in low production efficiency and high labor costs.
A quick-release structure for a grinding brush is designed, including a grinding brush shaft, a grinding brush fixing sleeve, and a quick-release mechanism. By setting multiple intermittent threads in the grinding brush fixing sleeve, combined with a locking nut and a slider rail system, the grinding brush can be quickly disassembled and installed.
This technology enables rapid disassembly of the grinding brush, reducing manual operation time, lowering labor costs, and improving production efficiency.
Smart Images
Figure CN121608068A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of brushing machine technology, specifically to a quick-release structure for the brush of a brushing machine. Background Technology
[0002] A PCB cleaning machine is a specialized piece of equipment used to clean or treat printed circuit boards (PCBs). It primarily removes contaminants, oxide layers, drill burrs, and other residues from the PCB surface to improve adhesion for subsequent processes. It achieves surface treatment through physical friction between high-speed rotating brush rollers and the PCB, combined with water rinsing. PCB cleaning machines are widely used in the electronics manufacturing industry, improving production efficiency and consistency, and ensuring uniform coating quality. The working principle of a PCB cleaning machine mainly includes a conveying system, a brush roller system, and a spraying system. It achieves efficient and uniform surface treatment through a combination of physical friction and chemical cleaning.
[0003] Circuit board cleaning machines are widely used in the electronics manufacturing industry, especially in SMT, wave soldering production lines, and PCBA manufacturing. They are indispensable in these areas, improving product stability and lifespan, reducing labor costs, and adapting to high-density assembly requirements. With increasing reliability demands in consumer electronics, automotive electronics, and other fields, the circuit board cleaning machine market will continue to grow, and may evolve towards greater efficiency and environmental friendliness in the future.
[0004] Existing brush removal methods for plate brushing machines typically involve locking the brush with a nut or a nut with a push rod. Since the brush is located on the inside, removal requires manually removing the nut or loosening it several turns to manually remove the inner brush retainer ring. This process is cumbersome, time-consuming, and reduces production efficiency. To address this, the inventor has developed a quick-release structure for the brushes of a plate brushing machine. Summary of the Invention
[0005] The purpose of this invention is to provide a quick-release structure for the brushes of a brushing machine. This quick-release structure has the advantages of simple structure, reasonable design, faster brush disassembly speed than conventional brushing machines, reduced manual brush replacement time, lower labor costs, and improved production efficiency, thus solving the problems mentioned in the above-mentioned technical background.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a quick-release structure for a brushing machine, comprising a frame and a brush mechanism running on the frame, wherein the brush mechanism is provided with a quick-release mechanism for locking it, the brush mechanism comprising a brush shaft and a brush fixedly sleeved on the brush shaft, a brush fixing sleeve coaxially connected to the brush shaft, the end of the brush fixing sleeve away from the brush shaft being an internally hollow cavity structure, the cavity being provided with multiple interrupted threads, the quick-release mechanism comprising a front bearing seat, a bearing inner bushing disposed on one side of the front bearing seat, and a bearing mounted on the front bearing seat, the end of the brush fixing sleeve away from the brush shaft being disposed on the bearing, a locking nut being disposed at the end of the bearing inner bushing away from the front bearing seat, the locking nut being mounted on the brush fixing sleeve, wherein the locking nut is used to limit the position of the front bearing seat and the bearing inner bushing, the front bearing seat being fixed on a slider, and the end of the slider away from the front bearing seat being slidably disposed on a slide rail.
[0007] Preferably, the frame includes two parallel body plates, with a water baffle fixed on one of the body plates. The brush fixing sleeve passes through both ends of the water baffle. The brush fixing sleeve does not interfere with the water baffle when rotating. When cleaning the circuit board with the brushing machine, the high-speed water flow used will not affect the structure of the two body plates that are far apart from each other under the action of the water baffle, thus avoiding water ingress into these structures and causing failure or damage.
[0008] Preferably, multiple interrupted threads are arranged in the circumferential direction within the cavity of the brush fixing sleeve, and the opening of the cavity is provided with a slot.
[0009] Preferably, the front bearing housing is L-shaped, and both ends of the front bearing housing are fixed with U-shaped disassembly and assembly handles. By holding the two disassembly and assembly handles with both hands, the operator can pull the front bearing housing to separate it from the brush fixing sleeve and complete the disassembly.
[0010] Preferably, there are two slide rails, which are arranged in parallel. Both slide rails are fixed to the support platform, which is fixed to the bottom support base, which is fixed to the frame.
[0011] Preferably, the quick-release mechanism further includes a rear bearing housing located at the end of the brush shaft away from the front bearing housing and a platform plate located on one side of the rear bearing housing. The platform plate and the rear bearing housing are both fixed to one of the body plates. A pressure table is provided at the end of the platform plate near the rear bearing housing. A T-shaped limiting rack is fixed at the end of the pressure table away from the platform plate. The rear bearing housing is U-shaped and a bearing is installed on the rear bearing housing. The end of the brush shaft away from the front bearing housing is located on the bearing.
[0012] Preferably, a limiting wheel is fixed at the end of the brush shaft away from the front bearing seat. The limiting wheel has multiple limiting grooves formed in the circumferential direction, and the limiting rack is inserted into one of the limiting grooves.
[0013] Preferably, two parallel springs are provided between the platform plate and the pressure table, with each spring connected to the platform plate and the pressure table at both ends respectively.
[0014] Preferably, a locking mechanism is provided at the end of the brushing mechanism away from the quick-release mechanism. The locking mechanism includes a mounting plate and a motor fixed on the mounting plate. A synchronous belt pulley set is provided at the output end of the motor. The synchronous belt pulley set includes a synchronous belt and a main synchronous pulley and a driven synchronous pulley respectively installed at both ends of the synchronous belt.
[0015] Preferably, the main synchronous pulley is connected to the output end of the motor, the secondary synchronous pulley is rotatably connected to the support platform, and a swing sleeve is fixed to the end of the secondary synchronous pulley away from the main synchronous pulley, and a locking block is fixed to the end of the swing sleeve away from the swing shaft.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention provides a quick-release structure for the brush of a brushing machine. The quick-release structure includes a frame and a brush mechanism running on the frame. The brush mechanism is equipped with a quick-release mechanism for locking it. The overall structure is simple and rationally designed. The brush mechanism includes a brush shaft and a brush fixedly sleeved on the brush shaft. A brush fixing sleeve is coaxially connected to the brush shaft. The end of the brush fixing sleeve away from the brush shaft is a hollow cavity structure with multiple intermittent threads. During disassembly, simply rotating the brush fixing sleeve 45° utilizes these threads to lock or release the brush, achieving the quick-release function. The right side of the brush fixing sleeve has a slot similar to a locking nut, which cooperates with the locking nut on the outside of the bearing inner bushing to lock the rotation. This invention allows for faster brush disassembly than conventional brushing machines, reducing manual brush replacement time, lowering labor costs, and improving production efficiency.
[0017] 2. In this invention, the brushing mechanism is equipped with a locking mechanism at the end away from the quick-release mechanism. The locking mechanism includes a mounting plate and a motor fixed to the mounting plate. The output end of the motor is equipped with a synchronous belt pulley set, which includes a synchronous belt and a main synchronous pulley and a driven synchronous pulley respectively installed at both ends of the synchronous belt. The main synchronous pulley is connected to the output end of the motor, and a swing sleeve is fixed at the end of the driven synchronous pulley away from the main synchronous pulley. A locking block is fixed at the end of the swing sleeve away from the swing shaft. The locking block is used to contact and connect with the rear bearing seat, pressing the rear bearing seat tightly. The sliding friction force limits the rear bearing seat, preventing it from shaking. At the same time, when it is necessary to release the limitation on the rear bearing seat, only the motor needs to be operated, without the need for manual use of tools to tighten screws, making the operation convenient and quick, and improving the user experience.
[0018] 3. The quick-release mechanism of the present invention also includes a rear bearing seat located at the end of the brush shaft away from the front bearing seat and a platform plate located on one side of the rear bearing seat. The platform plate and the rear bearing seat are both fixed to one of the body plates. A pressure table is provided at the end of the platform plate near the rear bearing seat. A T-shaped limiting rack is fixed at the end of the pressure table away from the platform plate. Two parallel springs are provided between the platform plate and the pressure table. The two ends of each spring are connected to the platform plate and the pressure table respectively. In the default state, the springs will not wobble, and the springs allow the limiting rack to rise and fall within a very small range, thereby allowing the limiting rack to better fit with the limiting groove. Attached Figure Description
[0019] Figure 1 This is the front view of the present invention; Figure 2 This is a partial cross-sectional view of the frame, brushing mechanism, and quick-release structure of the present invention; Figure 3 This is a cross-sectional view of the brush fixing sleeve of the present invention; Figure 4 This is a schematic diagram of the brush fixing sleeve of the present invention; Figure 5 This is one of the schematic diagrams of an embodiment of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of A in the middle; Figure 7 This is a second schematic diagram of an embodiment of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of B in the middle; Figure 9 This is a schematic diagram of the locking mechanism of the present invention.
[0020] The reference numerals and names in the figure are as follows: 1. Frame; 11. Body plate; 12. Water baffle; 2. Grinding brush mechanism; 21. Grinding brush shaft; 22. Grinding brush; 23. Grinding brush fixing sleeve; 231. Slot; 24. Intermittent thread; 3. Quick release mechanism; 31. Front bearing seat; 32. Bearing inner bushing; 33. Locking nut; 34. Disassembly and assembly operation handle; 35. Slider; 36. Slide rail; 37. Support platform; 38. Bottom support seat; 39. Platform plate; 310. Pressing table; 311. Limit rack; 312. Limit wheel; 3121. Limit groove; 313. Spring; 314. Rear bearing seat; 4. Locking mechanism; 41. Mounting plate; 42. Motor; 43. Synchronous belt; 44. Main synchronous pulley; 45. Driven synchronous pulley; 46. Swing shaft; 47. Swing sleeve; 48. Locking block. Detailed Implementation
[0021] 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.
[0022] In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0023] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.
[0024] Please see Figure 1 The present invention provides an embodiment of a brush quick-release structure for a brushing machine. The brush quick-release structure includes a frame 1 and a brush mechanism 2 running on the frame 1. The brush mechanism 2 is provided with a quick-release mechanism 3 for locking it. A locking mechanism 4 is provided at the end of the brush mechanism 2 away from the quick-release mechanism 3.
[0025] Please see Figure 2 The frame 1 includes two parallel body plates 11, with a water baffle 12 fixed on one of the body plates 11. The brushing mechanism 2 includes a brush shaft 21 and a brush 22 fixedly sleeved on the brush shaft 21. A brush fixing sleeve 23 is coaxially connected to the brush shaft 21, and the brush fixing sleeve 23 passes through both ends of the water baffle 12. The brush fixing sleeve 23 does not interfere with the movement of the water baffle 12 when rotating. When cleaning the circuit board using the brushing machine, the high-speed water flow will not damage the two circuit boards under the action of the water baffle 12. The structure of the body panels 11 that is far apart from each other on one side affects the structure and prevents water from entering these structures, which could lead to failure or damage. The quick-release mechanism 3 includes a front bearing seat 31, a bearing inner bushing 32 disposed on one side of the front bearing seat 31, and a bearing mounted on the front bearing seat 31. The end of the brush fixing sleeve 23 away from the brush shaft 21 is disposed on the bearing. Specifically, the bearing inner bushing 32 is connected to the brush shaft 21 through a keyway, and a locking nut 33 is provided at the end of the bearing inner bushing 32 away from the front bearing seat 31.
[0026] Please see Figures 3 to 4 The end of the brush fixing sleeve 23 away from the brush shaft 21 is a hollow cavity structure. Multiple interrupted threads 24 are provided in the cavity. The multiple interrupted threads 24 are arranged in the circumferential direction of the cavity of the brush fixing sleeve 23. A slot 231 is provided at the opening of the cavity. In this embodiment, four sets of interrupted threads 24 are provided in the cavity of the brush fixing sleeve 23, and the four sets of interrupted threads 24 are distributed at intervals.
[0027] Please see Figures 5 to 6 The locking nut 33 is installed on the brush fixing sleeve 23. The locking nut 33 is used to limit the position of the front bearing seat 31 and the bearing inner bushing 32. The front bearing seat 31 is L-shaped, and both ends of the front bearing seat 31 are fixed with U-shaped disassembly and assembly operation handles 34. By holding the two disassembly and assembly operation handles 34 with both hands, the operator can pull the front bearing seat 31 to separate the front bearing seat 31 from the brush fixing sleeve 23 and complete the disassembly. The front bearing seat 31 is fixed on the slider 35. The end of the slider 35 away from the front bearing seat 31 is slidably set on two slide rails 36. The two slide rails 36 are arranged in parallel and both slide rails 36 are fixed on the support platform 37. The support platform 37 is fixed on the bottom support base 38. The bottom support base 38 is fixed on the machine body plate 11.
[0028] Please see Figures 7 to 8 The quick-release mechanism 3 also includes a rear bearing seat 314 located at the end of the brush shaft 21 away from the front bearing seat 31, and a platform plate 39 located on one side of the rear bearing seat 314. The platform plate 39 and the rear bearing seat 314 are both fixed on one of the body plates 11. A pressure table 310 is provided at the end of the platform plate 39 near the rear bearing seat 314. A T-shaped limiting rack 311 is fixed at the end of the pressure table 310 away from the platform plate 39. Two parallel springs 313 are provided between the platform plate 39 and the pressure table 310. The two ends of each spring 313 are connected to the platform plate 39 and the pressure table 310 respectively. In the default state, the springs 313 will not wobble, and the springs 313 allow the limiting rack 311 to rise and fall within a very small range, thereby allowing the limiting rack 311 to better fit with the limiting groove 3121.
[0029] Please refer to it again. Figures 7 to 8 The rear bearing housing 314 is U-shaped and a bearing is installed on the rear bearing housing 314. The end of the brush shaft 21 away from the front bearing housing 31 is set on the bearing. The end of the brush shaft 21 away from the front bearing housing 31 is also fixed with a limiting wheel 312. Multiple limiting grooves 3121 are formed in the circumferential direction of the limiting wheel 312. The limiting rack 311 is inserted into one of the limiting grooves 3121.
[0030] Please see Figure 9 The locking mechanism 4 includes a mounting plate 41 fixed on the support platform 37 and a motor 42 fixed on the mounting plate 41. The output end of the motor 42 is provided with a synchronous pulley set, which includes a synchronous belt 43 and a main synchronous pulley 44 and a driven synchronous pulley 45 respectively installed at both ends of the synchronous belt 43. The main synchronous pulley 44 is connected to the output end of the motor 42, and the driven synchronous pulley 45 is rotatably connected to the support platform 37. A rocker sleeve 47 is fixed at the end of the driven synchronous pulley 45 away from the main synchronous pulley 44. A locking block 48 is fixed at the end of the rocker sleeve 47 away from the rocker shaft 46. The locking block 48 is used to contact and connect with the rear bearing seat 314, press the rear bearing seat 314 tightly, and limit the rear bearing seat 314 by sliding friction to prevent the rear bearing seat 314 from shaking.
[0031] Working principle: Please refer to the following again. Figures 1 to 9In this invention, multiple interrupted threads 24 are provided in the cavity of the brush fixing sleeve 23. By simply rotating the brush fixing sleeve 23 by 45°, the multiple interrupted threads 24 can be used to lock or release the brush 22, achieving a quick-release function for the brush 22. The right side of the brush fixing sleeve 23 has a slot 231 similar to a locking nut 33, which cooperates with the locking nut 33 on the outside of the bearing inner bushing 32 to lock the rotation. This makes the brush disassembly speed of this invention faster than conventional brushing machines, reducing the operation time for manual brush replacement. In specific operation, the locking nut 33 on the outside of the front bearing seat 31 is unscrewed, the front bearing seat 31 is pulled out, and then the brush fixing sleeve 23 is rotated by 45°. Through the interrupted threads 24, the brush fixing sleeve 23 and the brush 22 can be directly pulled out. The principle of installing the brush 22 is the same, only the operation sequence is reversed.
[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A quick-release structure for a brush in a brushing machine, characterized in that: The utility model provides a quick release mechanism (3) is arranged on the brush mechanism (2) and is locked to the brush mechanism (2), the brush mechanism (2) is arranged on the rack (1), and the quick release mechanism (3) is arranged on the brush mechanism (2) and is locked to the brush mechanism (2). The brush mechanism (2) comprises a brush shaft (21) and a brush (22) fixedly sleeved on the brush shaft (21), and a brush fixing sleeve (23) is coaxially connected to the brush shaft (21), and the end of the brush fixing sleeve (23) away from the brush shaft (21) is a hollow cavity structure, and a plurality of partitioned threads (24) are arranged in the cavity. The quick release mechanism (3) comprises a front bearing seat (31), a bearing inner bushing (32) arranged on one side of the front bearing seat (31) and a bearing mounted on the front bearing seat (31), the end of the brush fixing sleeve (23) away from the brush shaft (21) is arranged on the bearing, the end of the bearing inner bushing (32) away from the front bearing seat (31) is provided with a locking nut (33), the locking nut (33) is mounted on the brush fixing sleeve (23), the front bearing seat (31) is fixed on a sliding block (35), and the end of the sliding block (35) away from the front bearing seat (31) is slidingly arranged on a sliding rail (36).
2. The brush plate machine's brush grinding quick release structure according to claim 1, characterized in that: The rack (1) comprises two machine body plates (11) arranged in parallel, one of the machine body plates (11) is fixedly provided with a water baffle cover (12), and the brush fixing sleeve (23) penetrates through both ends of the water baffle cover (12).
3. The brush plate machine's brush grinding quick release structure according to claim 1, characterized in that: The plurality of partitioned threads (24) are arranged in the circumferential direction of the cavity of the brush fixing sleeve (23), and a slot (231) is arranged at the opening of the cavity.
4. The brush plate machine's brush grinding quick release structure according to claim 1, characterized in that: The front bearing seat (31) is in an L shape, and both ends of the front bearing seat (31) are fixedly provided with a dismounting handle (34) in a U shape.
5. The brush plate machine's brush grinding quick release structure according to claim 1, characterized in that: The sliding rail (36) is provided with two sliding rails (36) arranged in parallel, and both the sliding rails (36) are fixed on a support table (37), the support table (37) is fixed on a bottom support seat (38), and the bottom support seat (38) is fixed on the rack (1).
6. The brush plate machine's brush grinding quick release structure according to claim 1, characterized in that: The quick release mechanism (3) further comprises a rear bearing seat (314) arranged at the end of the brush shaft (21) away from the front bearing seat (31) and a platform plate (39) arranged on one side of the rear bearing seat (314), the end of the platform plate (39) close to the rear bearing seat (314) is provided with a pressing table (310), the end of the pressing table (310) away from the platform plate (39) is fixedly provided with a limiting rack (311) in a T shape, the rear bearing seat (314) is in a U shape, and a bearing is mounted on the rear bearing seat (314), and the end of the brush shaft (21) away from the front bearing seat (31) is arranged on the bearing.
7. The brush plate machine's brush grinding quick release structure according to claim 6, characterized in that: The end of the brush shaft (21) away from the front bearing seat (31) is further fixedly provided with a limiting wheel (312), a plurality of limiting grooves (3121) are formed in the circumferential direction of the limiting wheel (312), and the limiting rack (311) is inserted into one of the limiting grooves (3121).
8. The brush plate machine's brush grinding quick release structure according to claim 6, characterized in that: Two parallel springs (313) are arranged between the platform plate (39) and the pressing table (310), and two ends of each spring (313) are connected with the platform plate (39) and the pressing table (310) respectively.
9. The brush plate machine's brush grinding quick release structure according to claim 1, characterized in that: The grinding brush mechanism (2) is provided with a locking mechanism (4) at one end away from the quick release mechanism (3), the locking mechanism (4) comprises a mounting plate (41) and a motor (42) fixed on the mounting plate (41), and the output end of the motor (42) is provided with a synchronous belt wheel set comprising a synchronous belt (43) and a main synchronous wheel (44) and a slave synchronous wheel (45) mounted at two ends of the synchronous belt (43) respectively.
10. The brush plate machine's brush grinding quick release structure according to claim 9, characterized in that: The main synchronous wheel (44) is connected with the output end of the motor (42), the slave synchronous wheel (45) is rotatably connected on the support table (37), and one end of the slave synchronous wheel (45) away from the main synchronous wheel (44) is fixed with a swing sleeve (47), and one end of the swing sleeve (47) away from the swing shaft (46) is fixed with a locking block (48).