Intake elbow inner wall polishing device

Abstract

The utility model provides a kind of inlet bend inner wall polishing device, including workbench, further include: electric sliding table, fixed in the top end of workbench one side, electric sliding table moving end is fixed with connecting platform, driving motor, it is installed in the top end of moving table, the output shaft end portion of driving motor is fixed with flexible shaft, the outside of flexible shaft is provided with inner support structure, the outside of inner support structure is provided with polishing sheet, scrap collecting structure, it is set in the bottom end of workbench one side.The utility model, by starting negative pressure fan, make the negative pressure formed in the inside of air deflector pipe, the chip produced by polishing is inhaled into the inside of air deflector pipe by negative pressure, is collected by scrap collecting cover, thus realizes the chip collection function of this device, the chip in the inside of pipeline is extracted and collected, removes the residual chip in bend inner wall, avoids chip to hinder polishing tool and inner wall contact, simultaneously accelerates the discharge of bend interior heat, prevents the deformation or performance degradation of bend material due to high temperature.

Description

Technical Field

[0001] This utility model relates to the field of air intake bend processing technology, and in particular to an air intake bend inner wall polishing device. Background Technology

[0002] Because the 3D printing process can easily cause layering, residual powder, or micro-protrusions on the inner wall of the intake bend due to the accumulation of layers, and the curved structure of the bend makes it difficult for traditional polishing methods to evenly reach all parts of the inner wall, thus affecting the smoothness of airflow and the accuracy of air intake, an intake bend inner wall polishing device has been established. This device is specifically designed to adapt to the inner wall structure of 3D printed bends, remove inner wall defects through polishing, achieve a uniform and smooth inner wall surface, and ensure the airflow stability and operational reliability of the intake bend in subsequent use.

[0003] A search revealed Chinese patent publication number CN211841489U, which discloses an inner wall polishing device for pipe bending. The device includes a base plate, a sliding rod and a support frame fixedly connected to the top of the base plate, a sliding seat slidably connected to the outer surface of the sliding rod, a clamping fixture fixedly connected to one side of the sliding seat, and a positioning screw threaded to the other side of the sliding seat. A fixing frame is fixedly connected to the top of the support frame. This utility model relates to the technical field of polishing equipment. This inner wall polishing device for pipe bending uses a second telescopic rod to push a conical block downwards. Because the conical block is conical, when the second telescopic rod moves downwards, it pushes a pusher block, which in turn pushes a pusher plate outwards, causing the arc-shaped end of the pusher plate to fit against the inner wall of the pipe bending. A servo motor drives the polishing cylinder to rotate, thus polishing the inner walls of pipe bending of different diameters. This avoids the need to change different polishing machines to polish the inner walls of different pipe bending, improving work efficiency and ease of use.

[0004] The above-mentioned patent has the following shortcomings: it is not easy to remove debris. Because the inner wall of the 3D printed air intake bend is a complex curved surface, the space is closed and the channel is narrow, the metal or resin debris generated during the polishing process is easy to accumulate in the recesses and corners of the inner wall of the bend. This will not only hinder the full contact between the polishing tool and the inner wall, affecting the polishing uniformity and surface accuracy, but may also cause secondary damage to the processed surface due to the residual debris.

[0005] To address this, a polishing device for the inner wall of the air intake bend is proposed. Utility Model Content

[0006] In view of this, the present invention aims to provide an air intake bend inner wall polishing device to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial alternative.

[0007] The technical solution of this utility model embodiment is implemented as follows: an air intake bend inner wall polishing device, including a worktable, and further comprising: An electric slide is fixed to one side of the top of the worktable. The moving end of the electric slide is fixed with a connecting platform. A moving platform is provided above the connecting platform. A pneumatic clamp is installed on one side of the top of the worktable. A drive motor is mounted on the top of the moving platform. A flexible shaft is fixed to the end of the output shaft of the drive motor. An inner support structure is provided on the outside of the flexible shaft. A polishing disc is provided on the outside of the inner support structure. A reciprocating structure for driving the polishing disc to move back and forth is set between the moving stage and the connecting stage; A chip collection structure is provided on one side of the bottom end of the workbench. The chip collection structure includes a guide rod fixed to one side of the bottom end of the workbench. A movable frame is slidably connected to the outer side of the guide rod. An air duct is threadedly connected to the bottom end of the movable frame. A connecting component is provided at the top end of the movable frame.

[0008] In some embodiments: the connecting assembly includes a telescopic tube fixed inside the top of the movable frame, a rubber connecting sleeve fixed to the top of the telescopic tube, a telescopic spring connected to the movable frame fixed to the bottom of the rubber connecting sleeve, a chip collection cover detachably installed inside the air guide tube, and a negative pressure fan fixed to the bottom of the air guide tube.

[0009] In some embodiments: the telescopic tube is a hollow tubular structure with a wrinkled surface, and the telescopic tube is a telescopic structure.

[0010] In some embodiments: the frontal cross-section of the inner wall of the rubber connecting sleeve has a stepped structure, the outer side wall at the top of the air guide pipe is provided with an external thread, and the bottom of the movable frame is provided with an internal thread that cooperates with the external thread.

[0011] In some embodiments: the inner support structure includes an adjusting sleeve fixed to the outside of the flexible shaft by bolts, a compression spring fixed to one side of the adjusting sleeve, a movable sleeve slidably connected to the flexible shaft fixed to one side of the compression spring, a push arm hinged to the outside of the movable sleeve, a push plate connected to a polishing disc hinged to the side of the push arm away from the movable sleeve, a fixed sleeve fixed to one side of the flexible shaft, and a guide arm rotatably connected to the push plate hinged to the outside of the fixed sleeve.

[0012] In some embodiments: several sets of push plates are provided on the outside of the flexible shaft, and the several sets of push plates are arranged in a ring with equal spacing on the outside of the flexible shaft.

[0013] In some embodiments: the reciprocating structure includes slide rails fixed on both sides of the top of the connecting platform, a slider connected to the moving platform is slidably connected to the outer side of the top of the slide rails, a support frame is fixed to the side of the top of the connecting platform, a servo motor is fixed to the top of the support frame, a cam is fixed to the end of the output shaft of the servo motor, and a rocker arm is rotatably connected to one side of the bottom end of the cam via a pin.

[0014] In some embodiments: the rocker arm on the side away from the cam forms a rotating structure with the moving platform, and the slide rails are symmetrically distributed on the vertical center line of the moving platform.

[0015] The present invention has the following advantages due to the adoption of the above technical solution: A polishing device for the inner wall of an air intake bend pipe is disclosed. By activating a negative pressure fan, a negative pressure is created inside the air duct. Polishing debris is drawn into the air duct by the negative pressure and collected by a debris collection hood. This device achieves its debris collection function, extracting and collecting debris from inside the pipe, removing residual debris from the inner wall of the bend pipe, preventing debris from obstructing the contact between the polishing tool and the inner wall, and accelerating the dissipation of heat inside the bend pipe to prevent deformation or performance degradation of the bend pipe material due to high temperature.

[0016] An air intake bend inner wall polishing device uses a compression spring to push a sliding sleeve, which in turn pushes a push plate outward via a push arm, causing the polishing pad to fit tightly against the inner wall of the bend. This enables the device to adapt to different pipe diameters, allowing it to polish pipes of different diameters without requiring additional equipment replacement or structural adjustments to suit specific pipe diameters, thus improving the device's versatility and flexibility.

[0017] An air intake bend inner wall polishing device is provided. By starting a servo motor to drive the cam to rotate, the cam pulls the moving table back and forth through the rocker arm, thereby realizing the reciprocating polishing function of the device. This forms a combined rotary and reciprocating polishing action, avoiding the grinding dead angles caused by single rotary polishing, while enhancing the grinding effect on the inner wall texture of the bend, ensuring polishing uniformity and surface precision.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 In this utility model Figure 1 Another structural diagram from a different angle; Figure 3 A three-dimensional cross-sectional structural diagram of the chip collection structure provided by this utility model; Figure 4 A three-dimensional structural diagram of the internal support structure provided by this utility model; Figure 5 A three-dimensional structural diagram of the reciprocating structure provided by this utility model.

[0021] Figure label: 1-Workbench, 2-Chip collection structure, 201-Air duct, 202-Negative pressure fan, 203-Chip collection hood, 204-Telescopic spring, 205-Telescopic tube, 206-Rubber connecting sleeve, 207-Moving frame, 208-Guide rod, 3-Pneumatic clamp, 4-Polishing disc, 5-Internal support structure, 501-Push plate, 502-Push arm, 503-Compression spring, 504-Adjusting sleeve, 505-Moving sleeve, 506-Guide arm, 507-Fixed sleeve, 6-Flexible shaft, 7-Drive motor, 8-Reciprocating structure, 801-Support frame, 802-Servo motor, 803-Cam, 804-Rocker arm, 805-Slide rail, 806-Slider, 9-Moving table, 10-Connecting table, 11-Electric slide table. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] Example 1

[0026] like Figures 1 to 5 As shown, an air intake bend inner wall polishing device includes a worktable 1, and further includes: An electric slide table 11 is fixed to one side of the top of the worktable 1. A connecting table 10 is fixed to the moving end of the electric slide table 11. A moving table 9 is provided above the connecting table 10. A pneumatic clamp 3 is installed on one side of the top of the worktable 1. A drive motor 7 is mounted on the top of the moving platform 9. A flexible shaft 6 is fixed to the end of the output shaft of the drive motor 7. An inner support structure 5 is provided on the outside of the flexible shaft 6. A polishing sheet 4 is provided on the outside of the inner support structure 5. The reciprocating structure 8, used to drive the polishing disc 4 to move back and forth, is disposed between the moving stage 9 and the connecting stage 10. The chip collection structure 2 is set on one side of the bottom end of the workbench 1. The chip collection structure 2 includes a guide rod 208 fixed on one side of the bottom end of the workbench 1. A movable frame 207 is slidably connected to the outer side of the guide rod 208. An air duct 201 is threadedly connected to the bottom end of the movable frame 207. A connecting component is set at the top end of the movable frame 207.

[0027] In this embodiment, when the inner wall of the intake bend needs to be polished, the bend is fixed on the worktable 1 by the pneumatic clamp 3, and one end of the bend is aligned with the flexible shaft 6, and the other end is aligned with the chip collection structure 2. The electric slide 11 is started to drive the connecting table 10 and the moving table 9 to move, so that the polishing disc 4 extends into the bend. Then, the drive motor 7 is started to drive the flexible shaft 6 to rotate, which in turn drives the polishing disc 4 to rotate and polish. The inner support structure 5 is used to adapt to bends of different diameters, so that the polishing disc 4 fits tightly against the inner wall. The reciprocating structure 8 drives the polishing disc 4 to reciprocate while rotating. The chip collection structure 2 simultaneously extracts and collects the chips generated during polishing. The flexible shaft 6 has low stiffness and can be bent freely. It can deform with the contour of the bend and transmit rotational torque at the same time, adapting to its internal curved surface.

[0028] like Figures 1 to 3 As shown, the connecting assembly includes a telescopic tube 205 fixed inside the top of the movable frame 207. A rubber connecting sleeve 206 is fixed to the top of the telescopic tube 205, and a telescopic spring 204 connected to the movable frame 207 is fixed to the bottom of the rubber connecting sleeve 206. A chip collection cover 203 is detachably installed inside the air duct 201, and a negative pressure fan 202 is fixed to the bottom of the air duct 201. The telescopic tube 205 is a hollow tubular structure with a pleated surface and is telescopic. The frontal cross-section of the inner wall of the rubber connecting sleeve 206 is a stepped structure. An external thread is provided on the outer wall of the top of the air duct 201, and an internal thread that mates with the external thread is provided inside the bottom of the movable frame 207.

[0029] In this embodiment, the rubber connecting sleeve 206 is pre-connected to the bend port, and the telescopic spring 204 pushes the rubber connecting sleeve 206 to always fit the bend port. During the polishing process, the negative pressure fan 202 is started to form a negative pressure inside the air guide duct 201. The polishing debris is sucked into the air guide duct 201 by the negative pressure and collected by the debris collection cover 203. The guide rod 208 provides sliding guidance for the moving frame 207, which makes it easy for the manual adjustment of the position of the moving frame 207 according to the position of the bend port.

[0030] Example 2

[0031] An air intake bend inner wall polishing device, this embodiment is based on embodiment 1 with the following improvements, such as... Figures 1 to 4 As shown, the inner support structure 5 includes an adjusting sleeve 504 fixed to the outside of the flexible shaft 6 by bolts. A compression spring 503 is fixed to one side of the adjusting sleeve 504. A movable sleeve 505 that is slidably connected to the flexible shaft 6 is fixed to one side of the compression spring 503. A push arm 502 is hinged to the outside of the movable sleeve 505. A push plate 501 connected to the polishing plate 4 is hinged to the side of the push arm 502 away from the movable sleeve 505. A fixed sleeve 507 is fixed to one side of the flexible shaft 6. A guide arm 506 that is rotatably connected to the push plate 501 is hinged to the outside of the fixed sleeve 507. Several sets of push plates 501 are arranged on the outside of the flexible shaft 6, and the several sets of push plates 501 are arranged in a ring with equal spacing on the outside of the flexible shaft 6.

[0032] In this embodiment, the elastic force of the compression spring 503 pushes the movable sleeve 505 to slide along the flexible shaft 6. At the same time, the movable sleeve 505 drives the push arm 502 to unfold, thereby pushing the push plate 501 to expand outward. Meanwhile, the fixed sleeve 507 limits and guides the movement direction of the push plate 501, so that the polishing disc 4 fits tightly with the inner wall of the bend, so as to adapt to bends of different diameters and to a certain extent ensure the uniformity of polishing of the inner wall of bends of different specifications.

[0033] like Figures 1 to 5As shown, the reciprocating structure 8 includes slide rails 805 fixed on both sides of the top of the connecting platform 10. A slider 806 connected to the moving platform 9 is slidably connected to the outer side of the top of the slide rails 805. A support frame 801 is fixed to the side of the top of the connecting platform 10. A servo motor 802 is fixed to the top of the support frame 801. A cam 803 is fixed to the end of the output shaft of the servo motor 802. A rocker arm 804 is rotatably connected to one side of the bottom of the cam 803 through a pin. The side of the rocker arm 804 away from the cam 803 forms a rotating structure with the moving platform 9. The slide rails 805 are symmetrically distributed on the vertical center line of the moving platform 9.

[0034] In this embodiment, while the drive motor 7 drives the polishing disc 4 to rotate, the servo motor 802 is started to drive the cam 803 to rotate, so that the cam 803 pulls the moving table 9 along the slide rail 805 and the slider 806 through the rocker arm 804 to slide back and forth. At the same time, the moving table 9 drives the drive motor 7, the flexible shaft 6 and the polishing disc 4 to move back and forth synchronously. The combination of rotation and reciprocating motion forms a composite polishing action, which covers all areas of the inner wall of the bent pipe to a certain extent, avoids the grinding dead corners caused by single rotation polishing, and improves the comprehensiveness and accuracy of the inner wall polishing.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A polishing device for the inner wall of an air intake bend, comprising a worktable (1), characterized in that, Also includes: An electric slide (11) is fixed on one side of the top of the workbench (1). A connecting platform (10) is fixed to the moving end of the electric slide (11). A moving platform (9) is provided above the connecting platform (10). A pneumatic clamp (3) is installed on one side of the top of the workbench (1). A drive motor (7) is installed on the top of the moving platform (9). A flexible shaft (6) is fixed to the end of the output shaft of the drive motor (7). An inner support structure (5) is provided on the outside of the flexible shaft (6). A polishing sheet (4) is provided on the outside of the inner support structure (5). A reciprocating structure (8) for driving the polishing disc (4) to move back and forth is provided between the moving stage (9) and the connecting stage (10); A chip collection structure (2) is provided on one side of the bottom end of the workbench (1). The chip collection structure (2) includes a guide rod (208) fixed on one side of the bottom end of the workbench (1). A movable frame (207) is slidably connected to the outside of the guide rod (208). An air duct (201) is threadedly connected to the bottom end of the movable frame (207). A connecting component is provided at the top end of the movable frame (207).

2. The air intake bend inner wall polishing device according to claim 1, characterized in that: The connecting assembly includes a telescopic tube (205) fixed inside the top of the movable frame (207), a rubber connecting sleeve (206) fixed at the top of the telescopic tube (205), a telescopic spring (204) connected to the movable frame (207) fixed at the bottom of the rubber connecting sleeve (206), a chip collection cover (203) detachably installed inside the air guide pipe (201), and a negative pressure fan (202) fixed at the bottom inside the air guide pipe (201).

3. The air intake bend inner wall polishing device according to claim 2, characterized in that: The telescopic tube (205) is a hollow tubular structure with a wrinkled surface, and the telescopic tube (205) is a telescopic structure.

4. The air intake bend inner wall polishing device according to claim 2, characterized in that: The inner wall of the rubber connecting sleeve (206) has a stepped cross-section when viewed from the front. The outer side wall of the top of the air guide pipe (201) is provided with an external thread, and the bottom of the movable frame (207) is provided with an internal thread that cooperates with the external thread.

5. The air intake bend inner wall polishing device according to claim 1, characterized in that: The inner support structure (5) includes an adjusting sleeve (504) fixed to the outside of the flexible shaft (6) by bolts. A compression spring (503) is fixed to one side of the adjusting sleeve (504). A movable sleeve (505) that is slidably connected to the flexible shaft (6) is fixed to one side of the compression spring (503). A push arm (502) is hinged to the outside of the movable sleeve (505). A push plate (501) that is connected to the polishing plate (4) is hinged to the side of the push arm (502) away from the movable sleeve (505). A fixed sleeve (507) is fixed to one side of the flexible shaft (6). A guide arm (506) that is rotatably connected to the push plate (501) is hinged to the outside of the fixed sleeve (507).

6. The air intake bend inner wall polishing device according to claim 5, characterized in that: The push plate (501) is provided in several groups on the outside of the flexible shaft (6), and the several groups of push plates (501) are arranged in a ring with equal spacing on the outside of the flexible shaft (6).

7. The air intake bend inner wall polishing device according to claim 1, characterized in that: The reciprocating structure (8) includes slide rails (805) fixed on both sides of the top of the connecting platform (10). A slider (806) connected to the moving platform (9) is slidably connected to the outer side of the top of the slide rails (805). A support frame (801) is fixed to the side of the top of the connecting platform (10). A servo motor (802) is fixed to the top of the support frame (801). A cam (803) is fixed to the end of the output shaft of the servo motor (802). A rocker arm (804) is rotatably connected to one side of the bottom of the cam (803) through a pin.

8. The air intake bend inner wall polishing device according to claim 7, characterized in that: The rocker arm (804) on the side away from the cam (803) forms a rotating structure with the moving table (9), and the slide rails (805) are symmetrically distributed on the vertical center line of the moving table (9).

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