Portable ten-inch grinding machine

Abstract

The utility model discloses a portable ten-inch dull polish machine relates to workpiece surface treatment technical field, including frame and protection subassembly, the right end of frame is provided with hand-held part, the protection subassembly is connected to the front of frame bottom, the other end of protection curtain is connected to support frame, the inside of support frame is also provided with slide bar no. The middle of the first sliding block is connected with a first shear fork arm through a rotating shaft, the right end of the second shear fork arm is connected with a second sliding block through a rotating shaft, the second sliding rod is sleeved with a second spring, and the second sliding block is connected with a hand screw in a screwed mode. According to the portable ten-inch dull polish machine, the driving shaft and the first bevel gear are driven by the motor to rotate, the second bevel gear is driven by the first bevel gear to drive the transmission shaft and the dull polish head to rotate, the surface of a workpiece can be machined through the dull polish head, and due to the fact that the sum of the length of the machine frame and the length of the handheld part is about ten inches, the portable ten-inch dull polish machine is convenient to carry, light and smooth; and therefore, the device can adapt to some processing areas with narrow spaces.

Description

Technical Field

[0001] This utility model relates to the field of workpiece surface treatment technology, specifically a portable 10-inch sander. Background Technology

[0002] A grinding wheel is a tool used for grinding, polishing, and finishing the surfaces of metals, stone, ceramics, and other materials. It typically consists of abrasive particles, a binder, and perforations. It can be used with an electric motor, manual tools, or other equipment. There are many types of grinding machines, designed to suit different products. For small workpieces, the 10-inch grinding machine is the most commonly used, as it is compact and convenient for efficient and high-precision grinding of small workpiece surfaces.

[0003] For example, utility model application CN202321230515.1 discloses a handheld sander. This utility model, by setting a first and second connecting rod, allows the sanding head to be extended, retracted, and rotated according to the needs of sanding cinnabar pendants. This enables fine sanding of small-volume workpieces, and the heat dissipation holes allow the heat generated by the internal parts to be dissipated in a timely manner, preventing damage to the machine from prolonged exposure to high temperatures. It can also be fixed in place by the telescopic rod and base, making storage convenient and space-saving. However, when the sanding head rotates at high speed to sand the workpiece, a large amount of flying debris is generated. This debris can fly onto the worker's face, causing injury.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a portable 10-inch sander. Utility Model Content

[0005] The purpose of this invention is to provide a portable 10-inch sander to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A portable 10-inch sander, comprising a frame and a protective assembly. A handheld portion is provided at the right end of the frame. The protective assembly is connected to the bottom front of the frame and includes a protective curtain, a support frame, rollers, a sliding rod, a spring, a slider, a scissor arm, a scissor arm, a slider, a sliding rod, a spring, and a hand-tightening screw. The other end of the protective curtain is connected to the support frame, and rollers are rotatably mounted inside the support frame. A sliding rod is also provided inside the support frame, and a spring and a slider are sleeved on the outside of the sliding rod. A scissor arm is connected to the middle of the slider via a pivot, and a scissor arm is connected to the middle of the scissor arm via a pivot. A slider is connected to the right end of the scissor arm via a pivot, and a slider is threaded through the middle of the slider. A spring is sleeved on the outside of the slider. A hand-tightening screw is screwed onto the slider.

[0007] Furthermore, the rollers are symmetrically distributed about the center of the support frame, and the support frame and the slide bar are fixedly connected.

[0008] Furthermore, the slider one is elastically connected to the support frame via a spring one, and both slider one and slider two have a right-angled structure.

[0009] Furthermore, the frame and the second slide bar are fixedly connected, and the second slide bar is elastically connected to the frame via the second spring.

[0010] Furthermore, a motor is installed on the right side inside the frame, and the output end of the motor is connected to a drive shaft.

[0011] Furthermore, a bevel gear one is provided on the outside of the drive shaft, and a bevel gear two is connected to the outside of the bevel gear one.

[0012] Furthermore, a drive shaft is inserted through the middle of the second bevel gear, and a grinding head is installed at the bottom of the drive shaft.

[0013] Furthermore, the drive shaft and the frame are rotatably connected, and the drive shaft and the drive shaft are perpendicular to each other.

[0014] This utility model provides a portable 10-inch sander, which has the following beneficial effects:

[0015] 1. This utility model utilizes the elastic force of spring one and spring two to support slider one and slider two, so that the cross-arranged scissor arms one and two generate longitudinal support force on the support frame, thereby blocking debris through the unfolded protective curtain and preventing debris from flying and causing injury to workers.

[0016] 2. This utility model uses a motor to drive the drive shaft and bevel gear one to rotate. The bevel gear one drives the bevel gear two to rotate the drive shaft and the grinding head. The grinding head can be used to process the surface of the workpiece. Since the total length of the frame and the hand-held part is about ten inches, it is easy to carry, lightweight and convenient, and can adapt to some narrow processing areas. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the frame structure of a portable 10-inch sander according to the present invention;

[0018] Figure 2 This is a schematic diagram of the frame cross-section structure of a portable 10-inch sander according to the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the support frame of a portable 10-inch sander according to the present invention.

[0020] In the diagram: 1. Frame; 2. Handheld unit; 3. Protective components; 301. Protective curtain; 302. Support frame; 303. Roller; 304. Slide bar one; 305. Spring one; 306. Slider one; 307. Scissor arm one; 308. Scissor arm two; 309. Slider two; 310. Slide bar two; 311. Spring two; 312. Hand screw; 4. Motor; 5. Drive shaft; 6. Bevel gear one; 7. Bevel gear two; 8. Transmission shaft; 9. Grinding head. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] like Figures 1 to 3As shown, a portable 10-inch sander includes a frame 1 and a protective assembly 3. A handheld part 2 is located at the right end of the frame 1. The protective assembly 3 is connected to the bottom front of the frame 1 and includes a protective curtain 301, a support frame 302, rollers 303, a first slide bar 304, a first spring 305, a first slider 306, a first scissor arm 307, a second scissor arm 308, a second slider 309, a second slide bar 310, a second spring 311, and a thumbscrew 312. The other end of the protective curtain 301 is connected to the support frame 302, and the rollers 303 are rotatably mounted inside the support frame 302. The first slide bar 304 is also located inside the support frame 302, and the first spring 305 and the first slider 306 are sleeved on the outside of the first slide bar 304. The middle of the first slider 306 is open... A scissor arm 307 is connected via a pivot, and a second scissor arm 308 is connected to the middle of the first scissor arm 307 via a pivot. A second slider 309 is connected to the right end of the second scissor arm 308 via a pivot, and a second slider rod 310 is inserted through the middle of the second slider 309. A second spring 311 is sleeved on the outside of the second slider rod 310. A hand screw 312 is screwed onto the second slider 309. Rollers 303 are symmetrically distributed about the center of the support frame 302, and the support frame 302 and the first slider rod 304 are fixedly connected. A first slider 306 is elastically connected to the support frame 302 via a first spring 305, and both the first slider 306 and the second slider 309 have right-angle structures. The frame 1 and the second slider rod 310 are fixedly connected, and the second slider 309 is elastically connected to the frame 1 via a second spring 311.

[0023] The specific operation is as follows: the elastic force of spring 305 and spring 311 supports slider 306 and slider 309, so that the cross-set scissor arms 307 and 308 generate longitudinal support force on the support frame 302, thereby blocking the debris through the unfolded protective curtain 301 and preventing the debris from flying and causing injury to the workers.

[0024] like Figure 2 As shown, a motor 4 is installed on the right side inside the frame 1, and the output end of the motor 4 is connected to a drive shaft 5. A bevel gear 6 is provided on the outside of the drive shaft 5, and a bevel gear 7 is connected to the outside of the bevel gear 6. A transmission shaft 8 is passed through the middle of the bevel gear 7, and a grinding head 9 is installed at the bottom of the transmission shaft 8. The transmission shaft 8 and the frame 1 are rotatably connected, and the drive shaft 5 and the transmission shaft 8 are perpendicular to each other.

[0025] The specific operation is as follows: the motor 4 drives the drive shaft 5 and bevel gear 6 to rotate, and the bevel gear 6 drives the bevel gear 7 to rotate the transmission shaft 8 and the grinding head 9. The grinding head 9 can be used to process the surface of the workpiece. Since the total length of the frame 1 and the handheld part 2 is about ten inches, it is easy to carry, lightweight and convenient, and can adapt to some narrow processing areas.

[0026] In summary, when using this portable 10-inch sander, firstly, the inner surfaces of the frame 1 and the support frame 302 are provided with screw holes coaxial with the hand screw 312. When the hand screw 312 is unscrewed from the screw hole, the external load is removed. Spring 1 305 and Spring 2 311 return to their original shape due to their own elastic restoring force. This causes slider 1 306 and slider 2 309 to slide horizontally to the left along the outside of slider 1 304 and slider 2 310, respectively, until the crossing angle of scissor arms 1 307 and scissor arms 2 308 increases, and the distance between the support frame 302 and the frame 1 increases, thereby fully unfolding the protective curtain 301.

[0027] Next, place the workpiece that needs to be ground and polished on a flat worktable, and then control the motor 4 to drive the drive shaft 5 and bevel gear 6 to rotate. The bevel gear 6 drives the bevel gear 7 to drive the transmission shaft 8 and the grinding head 9 to rotate, and use the grinding head 9 to process the surface of the workpiece.

[0028] Because the rollers 303 are kept in close contact with the worktable under the action of springs 305 and 311, the rollers 303 provide mobility, allowing the operator to easily move the frame 1 by holding the handpiece 2, thereby grinding different positions of the workpiece. During this process, the protective curtain 301 blocks the debris, preventing debris from flying and causing injury to the operator, thus improving the use effect of the sander. After use, slide sliders 306 and 309 to the right, and then screw the hand screws 312 into the screw holes one by one, which can effectively store the support frame 302, making it convenient for the operator to carry it out on a daily basis.

[0029] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A portable 10-inch sander, comprising a frame (1) and a protective assembly (3), characterized in that, The right end of the frame (1) is provided with a hand-held part (2). The protective component (3) is connected to the bottom front of the frame (1). The protective component (3) includes a protective curtain (301), a support frame (302), a roller (303), a slide bar (304), a spring (305), a slider (306), a scissor arm (307), a scissor arm (308), a slider (309), a slide bar (310), a spring (311), and a hand screw (312). The other end of the protective curtain (301) is connected to the support frame (302). The support frame (302) is rotatably equipped with a roller (303). The frame (302) is also provided with a slide bar (304) inside, and a spring (305) and a slider (306) are sleeved on the outside of the slide bar (304). The middle part of the slider (306) is connected to a scissor arm (307) through a pivot, and the middle part of the scissor arm (307) is connected to a scissor arm (308) through a pivot. The right end of the scissor arm (308) is connected to a slider (309) through a pivot, and a slide bar (310) passes through the middle part of the slider (309). A spring (311) is sleeved on the outside of the slide bar (310), and a hand screw (312) is screwed onto the slider (309).

2. A portable 10-inch sander according to claim 1, characterized in that, The rollers (303) are symmetrically distributed about the center of the support frame (302), and the support frame (302) and the slide bar (304) are fixedly connected.

3. A portable 10-inch sander according to claim 1, characterized in that, The slider one (306) is elastically connected to the support frame (302) through the spring one (305), and both slider one (306) and slider two (309) are right-angled structures.

4. A portable 10-inch sander according to claim 1, characterized in that, The frame (1) and the slide bar (310) are fixedly connected, and the slide bar (309) is elastically connected to the frame (1) through the spring (311).

5. A portable 10-inch sander according to claim 1, characterized in that, A motor (4) is installed on the right side inside the frame (1), and the output end of the motor (4) is connected to a drive shaft (5).

6. A portable 10-inch sander according to claim 5, characterized in that, The drive shaft (5) is provided with a bevel gear one (6) on its outside, and a bevel gear two (7) is connected to the outside of the bevel gear one (6).

7. A portable 10-inch sander according to claim 6, characterized in that, The transmission shaft (8) is inserted through the middle of the second bevel gear (7), and a grinding head (9) is installed at the bottom of the transmission shaft (8).

8. A portable 10-inch sander according to claim 7, characterized in that, The drive shaft (8) is rotatably connected to the frame (1), and the drive shaft (5) and the drive shaft (8) are perpendicular to each other.

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