A sander with easy-to-change grinding wheels
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2026-08-11
AI Technical Summary
针对现有技术的不足，本实用新型提供了一种便于更换打磨轮的砂光机，解决了传统砂光机打磨轮更换效率低、安全性的问题
该实用新型，通过设置更换装置，的转动式拆卸结构，结合限位杆与打磨辊的滑动配合、卡条与滑槽的联动设计，无需依赖额外工具即可完成打磨轮的拆卸与安装。相比传统螺栓固定或卡扣结构，操作步骤更简洁，能大幅减少更换耗时，尤其适用于需要频繁切换打磨轮的场景，限位盘与固定盘分别从两端对打磨辊形成轴向限位，圆周阵列排布的限位杆则确保打磨辊与转杆的同步转动，避免打滑或偏心。
Smart Images
Figure CN224616010U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sanding machine processing technology, specifically a sanding machine that facilitates the replacement of grinding wheels. Background Technology
[0002] In industrial production, furniture manufacturing, metal processing and other fields, sanders are key equipment for surface treatment. Their sanding efficiency, ease of operation and safety directly affect production quality and progress.
[0003] Traditional sanders often use bolts or clips to fasten the grinding wheels. Bolted structures require tools such as wrenches to disassemble and install, making the process cumbersome. This can significantly increase downtime and reduce production efficiency, especially in scenarios where different grits and materials of grinding wheels need to be changed frequently. While some clip-on structures do not require tools, the clips are prone to wear or deformation due to long-term vibration, which can cause the grinding wheels to loosen. Utility Model Content
[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a sander with an easy-to-change grinding wheel, solving the problems of low grinding wheel replacement efficiency and safety in traditional sanders.
[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a sander that facilitates the replacement of grinding wheels, comprising: a support frame, wherein a grinding device is rotatably connected to the inner wall of the support frame, and a replacement device is slidably connected to the inner wall of the grinding device. The replacement device is disassembled by rotation. The grinding device includes a rotating rod, and a grinding roller is slidably connected to the outer wall of the rotating rod. The inner wall of the grinding roller is slidably connected to the outer wall of the replacement device. Through the rotational disassembly structure of the replacement device, combined with the sliding cooperation between the limiting rod and the grinding roller, and the linkage design of the locking strip and the sliding groove, the disassembly and installation of the grinding wheel can be completed without the need for additional tools.
[0006] Preferably, the end face of the rotating rod is rotatably connected to the output end of the motor, and the inner wall of the rotating rod is rotatably connected to the inner wall of the support frame.
[0007] Preferably, the replacement device includes a limiting plate, and a limiting rod is fixedly connected to the outer wall of the limiting plate. The outer wall of the limiting rod is arranged in a circumferential array along the central axis of the limiting plate. The limiting plate and the fixed plate respectively form an axial limit on the grinding roller from both ends. The circumferentially arranged limiting rod ensures the synchronous rotation of the grinding roller and the rotating rod, avoiding slippage or eccentricity.
[0008] Preferably, the inner wall of the limiting disc is fixedly connected to the outer wall of the rotating rod, the outer wall of the limiting disc is in contact with the outer wall of the grinding roller, and the outer wall of the limiting rod is slidably connected to the inner wall of the grinding roller.
[0009] Preferably, the outer wall of the limiting rod is slidably connected to a fixed plate, the inner wall of the fixed plate is provided with a groove, the inner wall of the groove is slidably connected to a locking strip, the inner wall of the locking strip is rotatably connected to a limiting rod, and the locking strip is locked by the constraint of the limiting rod, which can effectively resist the vibration and impact during grinding, ensure grinding accuracy, and reduce workpiece defects caused by loose connection.
[0010] Preferably, the outer wall of the fixed disk is in contact with the outer wall of the grinding roller, the outer wall of the limiting rod is fixedly connected to the end of the slide bar away from the motor, and the outer wall of the clamping strip is rotatably connected to the outer wall of the fixed disk.
[0011] Beneficial effects This invention provides a sander with an easy-to-change grinding wheel. It has the following advantages: This utility model, through the inclusion of a replacement device and a rotating disassembly structure, combined with the sliding engagement of the limiting rod and the grinding roller, and the linkage design of the locking strip and the sliding groove, allows for the disassembly and installation of the grinding wheel without the need for additional tools. Compared to traditional bolt-fixed or snap-fit structures, the operation steps are simpler, significantly reducing replacement time. It is especially suitable for scenarios requiring frequent grinding wheel switching. The limiting plate and the fixing plate respectively provide axial restraint to the grinding roller from both ends, while the circumferentially arrayed limiting rods ensure synchronous rotation of the grinding roller and the rotating rod, preventing slippage or eccentricity. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This utility model Figure 2 A magnified structural diagram of point A in the middle.
[0013] In the diagram: 1. Support frame; 2. Grinding device; 20. Rotating rod; 21. Grinding roller; 3. Changing device; 30. Limiting plate; 31. Limiting rod; 32. Fixing plate; 33. Slide groove; 34. Locking strip; 35. Limiting rod. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Example Please see Figure 1-3 This utility model provides a technical solution: a sander with an easy-to-change grinding wheel, comprising: The support frame 1 has a grinding device 2 rotatably connected to its inner wall, and a replacement device 3 is slidably connected to its inner wall. The replacement device 3 can be disassembled by rotating. When the sander is working, the motor outputs power to drive the grinding device 2 to grind the workpiece. The support frame 1 provides stable support for the entire equipment. The grinding device 2 includes a rotating rod 20, with a grinding roller 21 slidably connected to the outer wall of the rotating rod 20. The inner wall of the grinding roller 21 is slidably connected to the outer wall of the changing device 3. The end face of the rotating rod 20 is rotatably connected to the output end of the motor, and the inner wall of the rotating rod 20 is rotatably connected to the inner wall of the support frame 1. In the grinding device 2, the rotating rod 20 is a key component for power transmission. It is connected to the output end of the motor to transmit the rotational power of the motor. The grinding roller 21 is sleeved on the outer wall of the rotating rod 20 and rotates synchronously with the rotating rod 20 through cooperation with the changing device 3, thereby completing the grinding of the workpiece.
[0016] The replacement device 3 includes a limiting disk 30. A limiting rod 31 is fixedly connected to the outer wall of the limiting disk 30, and the outer wall of the limiting rod 31 is arranged in a circumferential array along the central axis of the limiting disk 30. The inner wall of the limiting disk 30 is fixedly connected to the outer wall of the rotating rod 20. The outer wall of the limiting disk 30 is in contact with the outer wall of the grinding roller 21. The outer wall of the limiting rod 31 is slidably connected to the inner wall of the grinding roller 21. The limiting disk 30 in the replacement device 3 is fixed to the outer wall of the rotating rod 20. The limiting rod 31 on its outer wall is arranged in a circumferential array along the central axis and is slidably connected to the inner wall of the grinding roller 21. This structure not only realizes the sliding cooperation between the grinding roller 21 and the rotating rod 20, which facilitates the installation and removal of the grinding roller 21, but also ensures that the two rotate synchronously and avoids slippage. A fixed plate 32 is slidably connected to the outer wall of the limiting rod 31. A groove 33 is provided on the inner wall of the fixed plate 32. A retaining strip 34 is slidably connected to the inner wall of the groove 33. A limiting rod 35 is rotatably connected to the inner wall of the retaining strip 34. The outer wall of the fixed plate 32 is in contact with the outer wall of the grinding roller 21. The outer wall of the limiting rod 35 is fixedly connected to the end of the sliding rod away from the motor. The outer wall of the retaining strip 34 is rotatably connected to the outer wall of the fixed plate 32. The fixed plate 32 is slidably connected to the outer wall of the limiting rod 31. It and the limiting plate 30 respectively form axial limiting on the grinding roller 21 from both ends to prevent the grinding roller 21 from axial displacement during the grinding process. When it is necessary to fix the grinding roller 21, rotate the limiting rod 35 to drive the locking strip 34 to slide in the slide groove 33, so that the locking strip 34 and the outer wall of the fixing plate 32 are locked together, and the grinding roller 21 is firmly fixed. When it is necessary to replace the grinding roller 21, rotate the limiting rod 35 in the opposite direction to unlock the locking strip 34, and the fixing plate 32 and the grinding roller 21 can be easily slid off, realizing rotational disassembly without additional tools, which is convenient and efficient.
[0017] When in use, the motor outputs power to drive the grinding device 2 to grind the workpiece when the sander is working. The support frame 1 provides stable support for the entire equipment. In the grinding device 2, the rotating rod 20 is a key component for power transmission. It is connected to the output end of the motor and transmits the rotational power of the motor. The grinding roller 21 is sleeved on the outer wall of the rotating rod 20 and rotates synchronously with the rotating rod 20 through cooperation with the changing device 3, thereby completing the grinding of the workpiece.
[0018] The limiting plate 30 in the replacement device 3 is fixed to the outer wall of the rotating rod 20. The limiting rods 31 on its outer wall are arranged in a circumferential array along the central axis and are slidably connected to the inner wall of the grinding roller 21. This structure not only realizes the sliding cooperation between the grinding roller 21 and the rotating rod 20, which facilitates the installation and disassembly of the grinding roller 21, but also ensures that the two rotate synchronously and avoids slippage.
[0019] The fixed plate 32 is slidably connected to the outer wall of the limiting rod 31. It and the limiting plate 30 respectively form axial limits on the grinding roller 21 from both ends, preventing the grinding roller 21 from axial displacement during the grinding process. When it is necessary to fix the grinding roller 21, rotate the limiting rod 35 to drive the locking strip 34 to slide in the slide groove 33, so that the locking strip 34 and the outer wall of the fixed plate 32 are locked together, firmly fixing the grinding roller 21. When it is necessary to replace the grinding roller 21, rotate the limiting rod 35 in the opposite direction, the locking strip 34 is unlocked, and the fixed plate 32 and the grinding roller 21 can be easily slid off, realizing rotational disassembly without additional tools, which is convenient and efficient.
[0020] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A sander with easily replaceable grinding wheels, comprising: The support frame (1) is characterized by: The inner wall of the support frame (1) is rotatably connected to a grinding device (2), and the inner wall of the grinding device (2) is slidably connected to a replacement device (3). The replacement device (3) is disassembled by rotation. The grinding device (2) includes a rotating rod (20), and a grinding roller (21) is slidably connected to the outer wall of the rotating rod (20). The inner wall of the grinding roller (21) is slidably connected to the outer wall of the replacement device (3).
2. A sander with easily replaceable grinding wheels according to claim 1, characterized in that: The end face of the rotating rod (20) is rotatably connected to the output end of the motor, and the inner wall of the rotating rod (20) is rotatably connected to the inner wall of the support frame (1).
3. A sander with easily replaceable grinding wheels according to claim 1, characterized in that: The replacement device (3) includes a limiting plate (30), and a limiting rod (31) is fixedly connected to the outer wall of the limiting plate (30). The outer wall of the limiting rod (31) is arranged in a circular array along the central axis of the limiting plate (30).
4. A sander with easily replaceable grinding wheels according to claim 3, characterized in that: The inner wall of the limiting disc (30) is fixedly connected to the outer wall of the rotating rod (20), the outer wall of the limiting disc (30) is in contact with the outer wall of the grinding roller (21), and the outer wall of the limiting rod (31) is slidably connected to the inner wall of the grinding roller (21).
5. A sander with easily replaceable grinding wheels according to claim 4, characterized in that: The outer wall of the limiting rod (31) is slidably connected to a fixed plate (32), the inner wall of the fixed plate (32) is provided with a groove (33), the inner wall of the groove (33) is slidably connected to a retaining strip (34), and the inner wall of the retaining strip (34) is rotatably connected to a limiting rod (35).
6. A sander with easily replaceable grinding wheels according to claim 5, characterized in that: The outer wall of the fixed disk (32) is in contact with the outer wall of the grinding roller (21), the outer wall of the limiting rod (35) is fixedly connected to the end of the slide rod away from the motor, and the outer wall of the locking strip (34) is rotatably connected to the outer wall of the fixed disk (32).