A trimming device for air conditioner plastic part processing

By designing a rotating cylinder and eccentric wheel structure, the sandpaper replacement process of the trimming device for processing air conditioner plastic parts is simplified, solving the problem of cumbersome operation in the existing technology and improving work efficiency.

CN224347557UActive Publication Date: 2026-06-12CHANGGE SHANGCHEN MASCH MFG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGGE SHANGCHEN MASCH MFG CO LTD
Filing Date
2025-04-29
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

The existing trimming device for processing plastic parts of air conditioners is cumbersome to operate when changing sandpaper, requiring the removal of the old sandpaper and the installation of the new sandpaper.

Method used

A structure including a rotating cylinder, a sandpaper winding roller, a limiting hole, and an eccentric wheel was designed. The sandpaper can be quickly replaced by rotating the second screw and the eccentric wheel, which simplifies the installation and removal process of the sandpaper.

Benefits of technology

It enables quick sandpaper replacement, simplifies the operation process, and improves work efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a trimming device for processing plastic parts for air conditioners, including a workbench. A mounting plate is fixedly connected to the top of the inner cavity of the workbench, and a motor is installed on the left side of the mounting plate. When changing sandpaper, the second screw is rotated first so that the pressure bar no longer presses the sandpaper. Then, the first screw is unscrewed to release the sandpaper winding roller. The sandpaper is then pulled out and the waste sandpaper on the front side is torn off. The sandpaper is then passed through the front side of the rectangular groove into the interior of the rotating cylinder. The two second screws are rotated, and the pressure bar moves to the right to press and fix the sandpaper in the inner cavity of the rectangular groove. Then, the top of the sandpaper winding roller is pressed and rotated so that the sandpaper winding roller tightens the sandpaper. Then, the first screw is moved, passes through the first groove, and is tightened in the inner cavity of the adjacent limiting hole, thereby fixing the sandpaper winding roller in the inner cavity of the rotating cylinder, thus completing the sandpaper replacement.
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Description

Technical Field

[0001] This utility model relates to the field of air conditioner plastic parts processing technology, and in particular to a trimming device for processing air conditioner plastic parts. Background Technology

[0002] An air conditioner, or air conditioner, regulates temperature and humidity. A wall-mounted air conditioner is a unit used to handle changes in air temperature within a space. Its function is to regulate parameters such as temperature, humidity, cleanliness, and airflow in a room to meet the requirements of human comfort or industrial processes. Many of the internal components of an air conditioner are made of plastic, and these plastic parts often produce scraps after molding, which need to be removed later.

[0003] Chinese Patent Publication No. CN218556542U discloses a trimming device for processing plastic parts for air conditioners, including a support mechanism and an adjustment mechanism disposed on the support mechanism for moving the plastic parts. The upper end of the adjustment mechanism is provided with a fixing mechanism for limiting the plastic parts, and one side of the fixing mechanism is provided with a trimming mechanism for removing burrs from the outer edge of the moving plastic parts.

[0004] This patent describes the use of a grinding wheel to trim the edges of plastic parts in air conditioners. The grinding wheel is usually covered with sandpaper, which needs to be replaced when it is severely worn. The existing replacement method requires removing the old sandpaper and installing the new one, which is quite cumbersome. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide a trimming device for processing plastic parts for air conditioners.

[0006] One of the objectives of this utility model is achieved through the following technical solution:

[0007] A trimming device for processing plastic parts for air conditioners includes a worktable. A mounting plate is fixedly connected to the top of the worktable's inner cavity. A motor is mounted on the left side of the mounting plate. A drive rod is fixedly connected to the top power output end of the motor. The drive rod is rotatably connected to the top of the worktable. A rotating cylinder is fixedly sleeved on the outer edge of the drive rod. A circular hole is opened at the top of the rotating cylinder. A sandpaper winding roller is movably inserted into the inner cavity of the circular hole. The sandpaper winding roller is movably sleeved on the outer edge of the drive rod. A first groove is opened on the left side of the rotating cylinder near the top. A first screw is inserted into the inner cavity of the first groove. Several limiting holes are opened on the outer edge of the sandpaper winding roller near the top. A rectangular groove is opened on the front side of the rotating cylinder. A pressure strip is movably inserted into the inner cavity of the rectangular groove. Connecting rods are fixedly connected to the rear side of the pressure strip near the top and bottom.

[0008] Furthermore, the first screw is inserted into the inner cavity of the adjacent limiting hole, the first screw is threaded to the limiting hole, the inner cavity of the limiting hole is provided with internal thread, and a plurality of the limiting holes are arranged in a ring array with the center of the sandpaper winding roller as the center.

[0009] Furthermore, the top and bottom of the rotating cylinder are provided with limit grooves, the end of the connecting rod away from the pressure strip moves through the adjacent limit groove and is fixedly connected to the limit plate, the left side of the connecting rod is provided with an eccentric wheel, and the front side of the rotating cylinder is provided with a second groove near the top and bottom, and a second screw is inserted into the inner cavity of the second groove.

[0010] Furthermore, the second screw and the second groove are connected by a thread, and the rear end of the second screw is fixedly connected to the eccentric wheel.

[0011] Furthermore, sandpaper is wound around the outer edge of the sandpaper winding roller, and the sandpaper matches the rectangular groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model discloses a trimming device for processing plastic parts for air conditioners. When changing sandpaper, first rotate the second screw so that the pressure bar no longer presses down on the sandpaper. Then, unscrew the first screw to release the sandpaper winding roller. Next, pull out the sandpaper and tear off the waste sandpaper from the front side. Then, pass the sandpaper through the front side of the rectangular groove into the interior of the rotating cylinder. Rotate the two second screws, and the pressure bar moves to the right to press and fix the sandpaper in the inner cavity of the rectangular groove. Then, press the top of the sandpaper winding roller and rotate the sandpaper winding roller to tighten the sandpaper. Then, move the first screw, which passes through the first groove and is tightened in the inner cavity of the adjacent limiting hole, thereby fixing the sandpaper winding roller in the inner cavity of the rotating cylinder, thus completing the sandpaper replacement. Attached Figure Description

[0014] Figure 1 This is a frontal perspective view of the present invention;

[0015] Figure 2 This is a front view of the present utility model;

[0016] Figure 3 This is a front perspective view of the motor component of this utility model;

[0017] Figure 4 This utility model Figure 3 Exploded view;

[0018] Figure 5 This is a front perspective view of the rotating cylinder component of this utility model;

[0019] Figure 6This is a frontal perspective view of the limiting hole of the component of this utility model;

[0020] Figure 7 This is a frontal perspective view of the sandpaper winding roller component of this utility model;

[0021] Figure 8 This is a front perspective view of the pressure strip of the component of this utility model;

[0022] Figure 9 This utility model Figure 3 Enlarged view of point A in the middle;

[0023] Figure 10 This utility model Figure 3 Enlarged view of point B in the middle;

[0024] Figure 11 This utility model Figure 8 Enlarged view of point C in the middle.

[0025] The following are the labels in the diagram: 1. Workbench; 2. Mounting plate; 3. Motor; 4. Drive rod; 5. Rotating cylinder; 6. Round hole; 7. Sandpaper winding roller; 8. Sandpaper; 9. First groove; 10. First screw; 11. Limiting hole; 12. Rectangular groove; 13. Pressure strip; 14. Connecting rod; 15. Limiting groove; 16. Limiting plate; 17. Eccentric wheel; 18. Second screw; 19. Second groove. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-11This utility model provides a technical solution: a trimming device for processing plastic parts for air conditioners, including a workbench 1, an mounting plate 2 fixedly connected to the top of the inner cavity of the workbench 1, a motor 3 mounted on the left side of the mounting plate 2, a drive rod 4 fixedly connected to the top power output end of the motor 3, the drive rod 4 being rotatably connected to the top of the workbench 1, a rotating cylinder 5 fixedly sleeved on the outer edge of the drive rod 4, a circular hole 6 opened at the top of the rotating cylinder 5, a sandpaper winding roller 7 movably inserted into the inner cavity of the circular hole 6, the sandpaper winding roller 7 being movably sleeved on the outer edge of the drive rod 4, a first groove 9 opened on the left side of the rotating cylinder 5 near the top, a first screw 10 inserted into the inner cavity of the first groove 9, the first screw 10 being inserted into the inner cavity of an adjacent limiting hole 11, the first screw 10 being threadedly connected to the limiting hole 11, the inner cavity of the limiting hole 11 being provided with an internal thread, and a plurality of limiting holes 11 being arranged in a circular array with the center of the sandpaper winding roller 7 as the center;

[0028] Sandpaper 8 is wound around the outer edge of the sandpaper winding roller 7. The sandpaper 8 matches the rectangular groove 12. Several limiting holes 11 are opened near the top of the outer edge of the sandpaper winding roller 7. A rectangular groove 12 is opened on the front side of the rotating cylinder 5. A pressure strip 13 is movably inserted into the inner cavity of the rectangular groove 12. A connecting rod 14 is fixedly connected to the rear side of the pressure strip 13 near the top and bottom. Limiting grooves 15 are opened at the top and bottom of the rotating cylinder 5. The end of the connecting rod 14 away from the pressure strip 13 moves through the adjacent limiting groove 15 and is fixedly connected to the limiting plate 16. An eccentric wheel 17 is provided on the left side of the connecting rod 14. A second groove 19 is opened near the top and bottom of the front side of the rotating cylinder 5. A second screw 18 is inserted into the inner cavity of the second groove 19. The second screw 18 and the second groove 19 are threadedly connected. The rear end of the second screw 18 is fixedly connected to the eccentric wheel 17.

[0029] Working principle: This utility model discloses a trimming device for processing plastic parts for air conditioners. During use, when installing the sandpaper winding roller 7, the sandpaper winding roller 7, which is wrapped with sandpaper 8, is moved. The sandpaper winding roller 7 passes through the circular hole 6 and is fitted onto the outside of the drive rod 4. Then, the sandpaper 8 on the sandpaper winding roller 7 is pulled out and passes through the rectangular groove 12, then wraps around the outside of the rotating cylinder 5. Figure 3As shown, the sandpaper 8 is then passed through the front side of the rectangular groove 12 into the interior of the rotating cylinder 5, so that the sandpaper 8 is located to the right of the pressure strip 13. Then, the two second screws 18 are rotated, and the second screws 18 drive the eccentric wheel 17 to rotate. The protruding part of the eccentric wheel 17 contacts the connecting rod 14, so that the connecting rod 14 and the pressure strip 13 move to the right. The connecting rod 14 moves in the inner cavity of the limiting groove 15, and the pressure strip 13 moves to the right to press and fix the sandpaper 8 in the inner cavity of the rectangular groove 12. Then, the top of the sandpaper winding roller 7 is pressed and the sandpaper winding roller 7 is rotated, so that the sandpaper winding roller 7 tightens the sandpaper 8. Then, the first screw 10 is moved, the first screw 10 passes through the first groove 9 and is tightened in the inner cavity of the adjacent limiting hole 11, thereby fixing the sandpaper winding roller 7 in the inner cavity of the rotating cylinder 5, thus completing the installation of the sandpaper winding roller 7.

[0030] Then, the motor 3 is started by an external power supply. The motor 3 drives the rotating cylinder 5 to rotate through the drive rod 4. The rotating cylinder 5 drives the sandpaper 8 to rotate. Then, the air conditioner plastic part to be trimmed is moved to release it from the sandpaper 8 on the outside of the rotating cylinder 5, thereby realizing the trimming work.

[0031] When replacing sandpaper 8, first rotate the second screw 18 so that the protruding part of the eccentric wheel 17 moves away from the connecting rod 14, so that the pressure strip 13 no longer presses the sandpaper. Then unscrew the first screw 10 to release the sandpaper winding roller 7. Then pull out the sandpaper 8 and tear off the waste sandpaper 8 on the front side. The new sandpaper on the back side will be released from the sandpaper winding roller 7. Then pass the sandpaper 8 through the front side of the rectangular groove 12 into the interior of the rotating cylinder 5. Rotate the two second screws 18, and the pressure strip 13 moves to the right to press and fix the sandpaper 8 in the inner cavity of the rectangular groove 12. Then press the top of the sandpaper winding roller 7 and rotate the sandpaper winding roller 7 so that the sandpaper winding roller 7 tightens the sandpaper 8. Then move the first screw 10, the first screw 10 passes through the first groove 9 and is tightened in the inner cavity of the adjacent limiting hole 11, thereby fixing the sandpaper winding roller 7 in the inner cavity of the rotating cylinder 5, thus completing the replacement of sandpaper 8.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 this utility model.

[0033] 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A trimming device for processing plastic parts for air conditioners, comprising a worktable (1), characterized in that: A mounting plate (2) is fixedly connected to the top of the inner cavity of the workbench (1). A motor (3) is installed on the left side of the mounting plate (2). A drive rod (4) is fixedly connected to the top power output end of the motor (3). The drive rod (4) is rotatably connected to the top of the workbench (1). A rotating cylinder (5) is fixedly sleeved on the outer edge of the drive rod (4). A round hole (6) is opened on the top of the rotating cylinder (5). A sandpaper winding roller (7) is movably inserted into the inner cavity of the round hole (6). The sandpaper winding roller (7) is movably sleeved with... On the outer edge of the drive rod (4), a first groove (9) is provided on the left side of the rotating cylinder (5) near the top. A first screw (10) is inserted into the inner cavity of the first groove (9). Several limiting holes (11) are provided on the outer edge of the sandpaper winding roller (7) near the top. A rectangular groove (12) is provided on the front side of the rotating cylinder (5). A pressure strip (13) is movably inserted into the inner cavity of the rectangular groove (12). A connecting rod (14) is fixedly connected to the rear side of the pressure strip (13) near the top and bottom.

2. The trimming device for processing plastic parts for air conditioners as described in claim 1, characterized in that: The first screw (10) is inserted into the inner cavity of the adjacent limiting hole (11). The first screw (10) is threadedly connected to the limiting hole (11). The inner cavity of the limiting hole (11) is provided with an internal thread. Several limiting holes (11) are arranged in a ring array with the center of the sandpaper winding roller (7) as the center.

3. The trimming device for processing plastic parts for air conditioners as described in claim 1, characterized in that: The top and bottom of the rotating cylinder (5) are provided with limiting grooves (15). The end of the connecting rod (14) away from the pressure strip (13) moves through the adjacent limiting groove (15) and is fixedly connected to the limiting plate (16). An eccentric wheel (17) is provided on the left side of the connecting rod (14). A second groove (19) is provided on the front side of the rotating cylinder (5) near the top and bottom. A second screw (18) is inserted into the inner cavity of the second groove (19).

4. The trimming device for processing plastic parts for air conditioners as described in claim 3, characterized in that: The second screw (18) and the second groove (19) are connected by a thread, and the rear end of the second screw (18) is fixedly connected to the eccentric wheel (17).

5. The trimming device for processing plastic parts for air conditioners as described in claim 1, characterized in that: The outer edge of the sandpaper winding roller (7) is wrapped with sandpaper (8), and the sandpaper (8) matches the rectangular groove (12).