Small-size elbow grinding machine

Abstract

The utility model relates to the field of polishing devices, and discloses a small-size elbow polishing machine which comprises a machine shell, a motor is installed on the inner wall of the machine shell, a storage battery is installed at the left end of the motor, a transmission mechanism is arranged at the right end of the motor, and a closed shell is fixedly connected to the right end of the machine shell. And the transmission mechanism comprises an extension assembly and an adjusting assembly, the extension assembly comprises a fixing sleeve, the left end of the fixing sleeve is fixedly connected to the right end of the closed shell, a sliding sleeve is slidably connected to the inner wall of the fixing sleeve, a transmission sleeve is rotatably connected to the inner wall of the sliding sleeve, and a transmission shaft is inserted into the inner wall of the transmission sleeve. According to the polishing device, the adjustable transmission mechanism is arranged, when the polishing device needs to penetrate through a gap for polishing, the sliding sleeve can be driven to move rightwards by adjusting the adjusting assembly, the sliding sleeve can drive the transmission sleeve to move rightwards, and therefore a transmission path can be achieved, and at the moment, an operator can guide the polishing head to penetrate through the gap to achieve polishing operation.

Description

Technical Field

[0001] This utility model relates to the field of grinding devices, and in particular to a small-volume bent-head grinding machine. Background Technology

[0002] A polishing machine is a device used to process the outer surface of an object. It generally includes large polishing machines and small polishing machines. Small polishing machines are mainly handheld polishing machines. They can start polishing operations as soon as they are plugged in. They are widely used because of their small size and convenient operation. They include curved head polishing machines and straight head polishing machines. The transmission structure of the two is similar, and they only differ in the direction of transmission.

[0003] In existing elbow grinders, the outer shell is generally designed as a single piece, which means that the position of the grinding head is relatively fixed relative to the handle. When grinding, if it is necessary to grind through a gap, the operator will be unable to pass the device through the gap due to the restriction of the handle. The overall device has poor applicability in use. Therefore, a small-volume elbow grinder is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a small-volume curved head grinder, which aims to improve the problem in the prior art that "the curved head grinder in the prior art is difficult to pass through the gap for grinding operations due to the limitation of the handle".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a small-volume elbow grinder, comprising a housing, a motor mounted on the inner wall of the housing, a battery mounted on the left end of the motor, a transmission mechanism mounted on the right end of the motor, a closed shell fixedly connected to the right end of the housing, the transmission mechanism comprising an extension component and an adjustment component, the extension component comprising a fixed sleeve, the left end of the fixed sleeve fixedly connected to the right end of the closed shell, a sliding sleeve slidably connected to the inner wall of the fixed sleeve, a transmission sleeve rotatably connected to the inner wall of the sliding sleeve, a transmission shaft inserted into the inner wall of the transmission sleeve, the left end of the transmission shaft fixedly connected to the right end of the motor output shaft, a grinding head fixedly connected to the right end of the sliding sleeve, a drive wheel fixedly connected to the right end of the transmission sleeve, a driven wheel rotatably connected through the front end of the grinding head, the driven wheel and the drive wheel meshing with each other, a grinding disc mounted on the front end of the driven wheel, and a limit component provided on the outer wall of the fixed sleeve.

[0006] As a further description of the above technical solution:

[0007] The adjusting component includes a cylindrical block, the rear end of which is fixedly connected to the outer wall of the sliding sleeve. The front surface of the fixed sleeve is provided with a groove, and the cylindrical block slides on the inner wall of the groove.

[0008] As a further description of the above technical solution:

[0009] An adjusting sleeve is rotatably connected to the outer wall of the fixed sleeve. The outer wall of the adjusting sleeve is provided with an inclined groove, and the cylindrical block slides on the inner wall of the inclined groove.

[0010] As a further description of the above technical solution:

[0011] The rear end of the sliding sleeve is provided with a spline, and the rear end of the fixed sleeve is provided with a keyway, and the spline slides on the inner wall of the keyway.

[0012] As a further description of the above technical solution:

[0013] The limiting component includes a limiting sleeve, which is fixedly connected to the outer wall of the fixed sleeve. A plug is slidably connected through the right end of the limiting sleeve. A limiting groove is provided at the left end of the adjusting sleeve, and the plug is inserted into the inner wall of the limiting groove.

[0014] As a further description of the above technical solution:

[0015] The right end of the insert is tapered, and a lever is fixedly connected to the front surface of the insert. The lever passes through and is slidably connected to the front surface of the limiting sleeve. A sliding rod is fixedly connected to the inner wall of the limiting sleeve, and the insert slides on the outer wall of the sliding rod.

[0016] As a further description of the above technical solution:

[0017] A reset spring is fixedly connected to the left end of the insertion block, and the left end of the reset spring is fixedly connected to the inner wall of the limiting sleeve.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the limiting sleeve is rotatably connected to a rotating sleeve, and a slot is provided on the right surface of the rotating sleeve.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by setting an adjustable transmission mechanism, when it is necessary to pass through the gap for grinding, the sliding sleeve can be moved to the right by adjusting the adjustment component. The sliding sleeve will drive the transmission sleeve to move to the right, thus making the transmission path. At this time, the operator can guide the grinding head through the gap to realize the grinding operation. The overall device has good applicability.

[0022] 2. In this utility model, by setting a limiting component, after adjusting the transmission mechanism, the rotating sleeve can be rotated to drive the slot and the dial plate to be misaligned. In this way, the insert block will not be able to move to the left and get out of the inside of the limiting groove, and the adjusting sleeve will be fixed and cannot be rotated. This can prevent the device from being extended or shortened at will during the grinding process, and the overall device has good stability. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0024] Figure 2 This is a three-dimensional structural breakdown diagram of the overall device in this utility model;

[0025] Figure 3 This is a three-dimensional structural disassembly diagram of the transmission mechanism in this utility model;

[0026] Figure 4 This is a three-dimensional cross-sectional view of the transmission mechanism in this utility model after disassembly.

[0027] Figure 5 This is a three-dimensional cross-sectional diagram of the limiting component in this utility model.

[0028] Legend:

[0029] 1. Housing; 2. Enclosed shell; 3. Transmission mechanism; 31. Drive shaft; 32. Fixed sleeve; 33. Cylindrical block; 34. Adjusting sleeve; 35. Inclined groove; 36. Transmission sleeve; 37. Sliding sleeve; 38. Slide groove; 39. Drive wheel; 310. Driven wheel; 4. Limiting assembly; 41. Limiting groove; 42. Insert block; 43. Paddle plate; 44. Slide rod; 45. Return spring; 46. Limiting sleeve; 47. Slot; 48. Rotating sleeve; 5. Grinding head; 6. Grinding disc; 7. Battery; 8. Motor. Detailed Implementation

[0030] 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.

[0031] Reference Figure 1 - Figure 3This utility model provides an embodiment of a small-volume elbow grinder, comprising a housing 1 for supporting the overall device. A motor 8 for driving the overall device is installed on the inner wall of the housing 1. A battery 7 for storing electrical energy is installed on the left end of the motor 8. The overall device adopts an integrated design and can be directly connected to an external power source to power the motor 8 during use, without needing other power sources to operate. A transmission mechanism 3 for transmitting power is provided on the right end of the motor 8. A sealing shell 2 for closing the opening on the right end of the housing 1 is fixedly connected to the right end of the housing 1. The transmission mechanism 3 includes an extension component and an adjustment component. The extension component includes a fixed sleeve 32 for supporting the overall transmission mechanism 3. The left end of the fixed sleeve 32 is fixedly connected to the right end of the sealing shell 2. A sliding sleeve 37 for driving the transmission sleeve 36 to move left and right is slidably connected to the inner wall of the fixed sleeve 32. A transmission sleeve 36 for transmitting rotation is rotatably connected. A transmission shaft 31 for driving the transmission sleeve 36 to rotate is inserted into the inner wall of the transmission sleeve 36. The left end of the transmission shaft 31 is fixedly connected to the right end of the output shaft of the motor 8. The transmission shaft 31 can be driven to rotate by starting the motor 8. The rotation of the transmission shaft 31 can drive the transmission sleeve 36 to rotate. A grinding head 5 for supporting the rotation of the driven wheel 310 is fixedly connected to the right end of the sliding sleeve 37. A driving wheel 39 for driving the driven wheel 310 to rotate is fixedly connected to the right end of the transmission sleeve 36. The front end of the grinding head 5 passes through and is rotatably connected to the driven wheel 310 for driving the grinding disc 6 to rotate. The driven wheel 310 and the driving wheel 39 mesh with each other. When the driving wheel 39 rotates, it can drive the driven wheel 310 to rotate. A grinding disc 6 for grinding objects is installed at the front end of the driven wheel 310. A limiting component 4 for limiting the adjustment component is provided on the outer wall of the fixed sleeve 32.

[0032] Reference Figure 2 - Figure 4 The adjusting assembly includes a cylindrical block 33 for moving the sliding sleeve 37. The rear end of the cylindrical block 33 is fixedly connected to the outer wall of the sliding sleeve 37. The front surface of the fixed sleeve 32 is provided with a groove 38 for limiting the movement trajectory of the cylindrical block 33. The cylindrical block 33 slides on the inner wall of the groove 38. Due to the restriction of the groove 38, the cylindrical block 33 can only move horizontally left and right. The outer wall of the fixed sleeve 32 is rotatably connected to an adjusting sleeve 34 for actively moving the cylindrical block 33. The outer wall of the adjusting sleeve 34 is provided with a sloping groove 35. The cylindrical block 33 slides on the inner wall of the sloping groove 35. By rotating the adjusting sleeve 34, the sloping groove 35 can be driven to squeeze the cylindrical block 33, thus driving the cylindrical block 33 to move left and right. The rear end of the sliding sleeve 37 is provided with a spline for supporting the sliding sleeve 37. The rear end of the fixed sleeve 32 is provided with a keyway. The spline slides on the inner wall of the keyway. By providing the spline and keyway, the stability of the fixed sleeve 32 after it is moved out can be enhanced.

[0033] Reference Figure 3 - Figure 5The limiting component 4 includes a limiting sleeve 46 for accommodating the insert 42. The limiting sleeve 46 is fixedly connected to the outer wall of the fixed sleeve 32. The right end of the limiting sleeve 46 is slidably connected to the insert 42 for limiting the rotation of the limiting sleeve 46. The left end of the adjusting sleeve 34 is provided with a limiting groove 41 for accommodating the insert 42. The insert 42 is inserted into the inner wall of the limiting groove 41. The right end of the insert 42 is tapered. When the tapered slope of the insert 42 is compressed, the insert 42 will be forced to move to the left. The front surface of the insert 42 is fixedly connected to a lever 43 for facilitating the operator to move the insert 42. The lever 43 is slidably connected to the front surface of the limiting sleeve 46. When the insert 42 moves to the left, the lever 43 will also... The limit sleeve 46 moves synchronously to the left. The inner wall of the limit sleeve 46 is fixedly connected to a slide rod 44 for supporting the movement of the insert 42. The insert 42 slides on the outer wall of the slide rod 44. The left end of the insert 42 is fixedly connected to a reset spring 45 for driving the insert 42 to move to the right and reset. The left end of the reset spring 45 is fixedly connected to the inner wall of the limit sleeve 46. The reset spring 45 will push the insert 42 to the right at all times. The outer wall of the limit sleeve 46 is rotatably connected to a rotating sleeve 48 for blocking the movement of the dial plate 43. The right surface of the rotating sleeve 48 is provided with a slot 47 for accommodating the dial plate 43. Only when the dial plate 43 is aligned with the slot 47 can the dial plate 43 move to the left, so that the insert 42 can disengage from the inner wall of the limit groove 41.

[0034] Working principle: When the length of the overall transmission mechanism 3 needs to be adjusted, the adjusting sleeve 34 can be manually rotated. The inclined groove 35 on the outer wall of the adjusting sleeve 34 will rotate with the rotation of the adjusting sleeve 34. The inclined groove 35 interacts with the cylindrical block 33 fixedly connected to the rear end of the outer wall of the sliding sleeve 37. Because the cylindrical block 33 slides on the inner wall of the sliding groove 38 set on the front surface of the fixed sleeve 32, and is restricted by the sliding groove 38 to only move horizontally left and right, the rotation of the inclined groove 35 will squeeze the cylindrical block 33, making it slide left and right in the sliding groove 38. In this way, the length of the overall transmission mechanism 3 can be changed. When the length is adjusted, Afterwards, the insert 42 will move to the right and insert into the limiting groove 41 under the action of the return spring 45. Then, the rotating sleeve 48 connected to the outer wall of the limiting sleeve 46 can be rotated, so that the slot 47 on the right surface of the rotating sleeve 48 is misaligned with the dial plate 43. At this time, the dial plate 43 will be blocked and cannot move to the left, and the insert 42 will not be able to move to the left and get out of the limiting groove 41, thus ensuring that the adjusting sleeve 34 is fixed and ensuring the stability of the entire device during the grinding process. At the same time, since the transmission mechanism 3 of the whole device is designed to be slender and has a small cross-sectional area, it can easily pass through the gap for grinding operations.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A small-volume elbow grinding machine, comprising a housing (1), characterized in that: A motor (8) is installed on the inner wall of the housing (1). A battery (7) is installed on the left end of the motor (8). A transmission mechanism (3) is provided on the right end of the motor (8). A closed shell (2) is fixedly connected to the right end of the housing (1). The transmission mechanism (3) includes an extension component and an adjustment component. The extension component includes a fixed sleeve (32). The left end of the fixed sleeve (32) is fixedly connected to the right end of the closed shell (2). A sliding sleeve (37) is slidably connected to the inner wall of the fixed sleeve (32). A transmission sleeve (36) is rotatably connected to the inner wall of the sliding sleeve (37). A transmission shaft (31) is inserted into the inner wall of the transmission sleeve (36). The left end of the transmission shaft (31) is fixedly connected to the right end of the output shaft of the motor (8). A grinding head (5) is fixedly connected to the right end of the sliding sleeve (37). A drive wheel (39) is fixedly connected to the right end of the transmission sleeve (36). A driven wheel (310) is rotatably connected to the front end of the grinding head (5). The driven wheel (310) and the drive wheel (39) mesh with each other. A grinding disc (6) is installed at the front end of the driven wheel (310). A limit component (4) is provided on the outer wall of the fixed sleeve (32).

2. The small-volume elbow grinding machine according to claim 1, characterized in that: The adjustment component includes a cylindrical block (33), the rear end of which is fixedly connected to the outer wall of the sliding sleeve (37), and the front surface of the fixed sleeve (32) is provided with a groove (38), and the cylindrical block (33) slides on the inner wall of the groove (38).

3. The small-volume elbow grinding machine according to claim 2, characterized in that: The outer wall of the fixed sleeve (32) is rotatably connected to the adjusting sleeve (34), and the outer wall of the adjusting sleeve (34) is provided with a groove (35), and the cylindrical block (33) slides on the inner wall of the groove (35).

4. The small-volume elbow grinding machine according to claim 1, characterized in that: The rear end of the sliding sleeve (37) is provided with a spline, and the rear end of the fixed sleeve (32) is provided with a keyway, and the spline slides on the inner wall of the keyway.

5. A small-volume elbow grinding machine according to claim 3, characterized in that: The limiting component (4) includes a limiting sleeve (46), which is fixedly connected to the outer wall of the fixed sleeve (32). The right end of the limiting sleeve (46) is slidably connected to an insert (42). The left end of the adjusting sleeve (34) is provided with a limiting groove (41), and the insert (42) is inserted into the inner wall of the limiting groove (41).

6. A small-volume elbow grinding machine according to claim 5, characterized in that: The right end of the insert (42) is tapered. A lever (43) is fixedly connected to the front surface of the insert (42). The lever (43) passes through and is slidably connected to the front surface of the limiting sleeve (46). A slide rod (44) is fixedly connected to the inner wall of the limiting sleeve (46). The insert (42) slides on the outer wall of the slide rod (44).

7. A small-volume elbow grinding machine according to claim 6, characterized in that: A reset spring (45) is fixedly connected to the left end of the insert (42), and the left end of the reset spring (45) is fixedly connected to the inner wall of the limiting sleeve (46).

8. A small-volume elbow grinding machine according to claim 7, characterized in that: The outer wall of the limiting sleeve (46) is rotatably connected to a rotating sleeve (48), and a slot (47) is provided on the right surface of the rotating sleeve (48).

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