An internal polishing device for plastic parts
By designing an internal polishing device for plastic parts that includes a polishing mechanism and a cleaning component, debris can be cleaned up simultaneously during the polishing process. This solves the problem of debris retention during the polishing of circular holes in annular plastic parts and ensures the polishing effect.
Patent Information
- Application Number
- CN202521420680.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-08
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-08
AI Technical Summary
In the prior art, during the polishing process of circular holes in annular plastic parts, debris is difficult to remove, causing the grinding wheel to rub repeatedly against the hole wall, which affects the polishing effect.
An internal polishing device for plastic parts was designed, comprising a polishing mechanism and a cleaning component. While polishing is performed by rotating an electric abrasive roller, a suction pipe rotates simultaneously to absorb debris. The debris is then collected into a collection box using a fan and connecting pipe to prevent debris from accumulating.
It effectively cleans up the debris generated during the polishing process, preventing the debris from repeatedly rubbing between the abrasive roller and the hole wall, thus ensuring the polishing effect of the circular holes in the annular plastic parts.
Smart Images
Figure CN224674490U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of internal polishing technology for plastic parts, and specifically to an internal polishing device for plastic parts. Background Technology
[0002] Plastic parts are various plastic products made from synthetic resin as the main raw material through processes such as injection molding. During the processing of plastic parts, polishing equipment is needed to polish the interior in order to ensure the quality of the finished product.
[0003] In current technology, when polishing the inside of a circular hole in a ring-shaped plastic part, a grinding wheel is used to polish the inside of the circular hole. However, debris is generated during the polishing process. Since the surface space of the circular hole is closed, the debris generated during the polishing process will be trapped inside the circular hole and will not be able to be discharged naturally. The debris trapped during the polishing process will repeatedly rub between the grinding wheel and the hole wall, which will cause scratches on the circular hole wall and affect the polishing effect of the grinding wheel on the inside of the circular hole.
[0004] Based on this, the present invention designs an internal polishing device for plastic parts to solve the above problems. Utility Model Content
[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a polishing device for the interior of plastic parts.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A polishing device for the interior of plastic parts includes a worktable, the top of which is fixedly connected to a fixing plate and a three-jaw chuck.
[0008] It also includes a polishing mechanism, which includes a drive assembly disposed on one side of a fixed plate. A rotating rod is rotatably connected to the inner wall of the fixed plate. An electric lifting rod is mounted on the surface of the rotating rod. An electric abrasive roller is mounted on one end of the electric lifting rod. A cleaning assembly is disposed on one side of the electric lifting rod.
[0009] The cleaning assembly includes a fixed rod that is fixedly connected to one side of the electric lifting rod. A vacuum pipe is fixedly connected to the end of the fixed rod away from the electric lifting rod. A connecting pipe is fixedly connected to the inner wall of the rotating rod. One end of the connecting pipe is connected to the vacuum pipe, and the other end of the connecting pipe is rotatably connected to the fixed pipe.
[0010] Furthermore, the cleaning assembly also includes a collection box fixedly connected to one side of the workbench, a fan installed at the bottom of the collection box, the end of the fixed pipe away from the connecting pipe communicating with the top of the collection box, and a filter frame fixedly connected to the inner wall of the collection box.
[0011] Furthermore, the drive assembly includes two first gears rotatably connected to one side of the fixed plate, the two first gears meshing together, a first motor fixedly connected to one side of the fixed plate, the output shaft of the first motor fixedly connected to one end of one of the first gears, and the inner wall of the other first gear fixedly connected to the surface of the rotating rod.
[0012] Furthermore, a sealed bearing is embedded in one end of the fixed tube, and the inner edge of the sealed bearing is fixedly connected to the surface of the connecting tube.
[0013] Furthermore, the middle part of the connecting pipe is set as a corrugated pipe, and the connecting pipe is a rubber component.
[0014] Furthermore, a limiting rod is fixedly connected to the other side of the fixing plate, and the end of the limiting rod away from the fixing plate and the end of the vacuum pipe near the fixing plate are located on the same vertical plane.
[0015] Furthermore, the surface of the suction pipe is connected to a guide frame, and the opening of the guide frame is funnel-shaped.
[0016] Furthermore, the inner walls of the filter frame are all inclined on all four sides.
[0017] Compared with the prior art, the advantages of this utility model are as follows:
[0018] 1. In the above-mentioned polishing mechanism, by rotating the surface of the electric grinding roller in contact with the circular hole of the annular plastic part while rotating itself, it is beneficial to achieve the polishing operation of the circular hole of the annular plastic part. At the same time, the dust suction pipe in the cleaning component rotates synchronously with the electric grinding roller. Under the action of the fan, fixed pipe and connecting pipe, it is beneficial to enable the dust suction pipe to simultaneously absorb and clean the debris generated during the polishing process of the grinding roller, thereby avoiding the debris generated during polishing from being stuck in the circular hole. This avoids the debris from repeatedly rubbing between the grinding roller and the hole wall during the polishing process, which is beneficial to ensuring the polishing effect of the grinding roller on the circular hole of the annular plastic part.
[0019] 2. By setting up a filter frame, it is beneficial to intercept the debris entering the collection box, and the inclined inner wall of the filter frame helps the debris in the filter frame to slide down to the bottom of the filter frame and accumulate better. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a perspective view of an internal polishing device for plastic parts according to the present invention;
[0022] Figure 2 This is a schematic diagram of the polishing mechanism of an internal polishing device for plastic parts according to the present invention;
[0023] Figure 3 This is a schematic diagram of the cleaning component structure of an internal polishing device for plastic parts according to the present invention;
[0024] Figure 4 This is a schematic diagram of the installation structure of the dust suction pipe and guide frame of the internal polishing device for plastic parts according to this utility model;
[0025] Figure 5 This is a cross-sectional view of the collection box of an internal polishing device for plastic parts according to this utility model.
[0026] The labels in the diagram represent:
[0027] 100. Worktable; 200. Three-jaw chuck; 300. Fixing plate; 400. Polishing mechanism; 410. Drive assembly; 411. First gear; 412. First motor; 420. Rotating rod; 430. Electric lifting rod; 440. Electric grinding roller; 450. Cleaning assembly; 451. Fixing rod; 452. Suction pipe; 453. Connecting pipe; 454. Fixing pipe; 455. Collection box; 456. Fan; 457. Filter frame; 458. Sealed bearing; 459. Guide frame; 460. Limiting rod. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0029] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.
[0030] In some embodiments, please refer to the accompanying drawings. Figures 1-5 A plastic part internal polishing device includes a worktable 100, and a fixed plate 300 and a three-jaw chuck 200 are fixedly connected to the top of the worktable 100.
[0031] It also includes a polishing mechanism 400, which includes a drive assembly 410 disposed on one side of a fixed plate 300. A rotating rod 420 is rotatably connected to the inner wall of the fixed plate 300. An electric lifting rod 430 is mounted on the surface of the rotating rod 420. An electric abrasive roller 440 is mounted on one end of the electric lifting rod 430. A cleaning assembly 450 is disposed on one side of the electric lifting rod 430.
[0032] The cleaning component 450 includes a fixed rod 451 fixedly connected to one side of the electric lifting rod 430. A vacuuming pipe 452 is fixedly connected to one end of the fixed rod 451 away from the electric lifting rod 430. A connecting pipe 453 is fixedly connected to the inner wall of the rotating rod 420. One end of the connecting pipe 453 is connected to the vacuuming pipe 452, and the other end of the connecting pipe 453 is rotatably connected to the fixed pipe 454.
[0033] It should be noted that the electric lifting rod 430 includes an electric push rod and a mounting rod. The electric push rod is fixedly connected to the surface of the rotating rod 420, and the mounting rod is fixedly connected to the telescopic end of the electric push rod. A round rod is fixedly connected to the surface of the rotating rod 420, and the inner wall of the mounting rod is slidably connected to the surface of the round rod. The round rod limits the mounting rod. The electric push rod can be started by the controller to drive the mounting rod to move. Thus, the distance between the electric sanding roller 440 and the center of the rotating rod 420 can be adjusted by the electric lifting rod 430.
[0034] The electric sanding roller 440 includes a fixed frame, a drive motor, and a sanding roller. The fixed frame is fixedly connected to one end of the electric lifting rod 430. The drive motor is installed inside the fixed frame. The output shaft of the drive motor passes through the fixed frame and is fixedly connected to one end of the sanding roller. The drive motor is started by the controller, and the output shaft of the drive motor will drive the sanding roller to rotate. The end of the sanding roller away from the drive motor passes through the three-jaw chuck 200. The length of the suction pipe 452 matches the length of the sanding roller, and the two ends of the suction pipe 452 are aligned with the two ends of the sanding roller. The opening of the suction pipe 452 faces the electric sanding roller 440.
[0035] The center of the three-jaw chuck 200 and the center of the rotating rod 420 are on the same axis. When using the three-jaw chuck 200 to fix a ring-shaped plastic part, the ring-shaped plastic part is placed inside the three-jaw chuck 200. The operator drives the large bevel gear to rotate by rotating the small bevel gear on the chuck. The back of the large bevel gear usually has a flat thread structure, which meshes with the flat threads at the rear ends of the three jaws. As the large bevel gear rotates, the three jaws move linearly along the radial direction of the chuck body, thereby clamping the ring-shaped plastic part.
[0036] In this embodiment, when polishing the inside of the circular hole of the annular plastic part, the distance between the electric polishing roller 440 and the rotating rod 420 is adjusted by the electric lifting rod 430, and the annular plastic part is placed in the three-jaw chuck 200. At this time, the polishing roller in the electric polishing roller 440 is located inside the circular hole of the annular plastic part, and the annular plastic part is fixed by the three-jaw chuck 200. After fixing, the center of the annular plastic part coincides with the center of the three-jaw chuck 200 and the center of the rotating rod 420. Then, the electric lifting rod 430 drives the electric polishing roller 440 to move, so that the polishing roller in the electric polishing roller 440... The surface contacts the inner wall of the circular hole in the annular plastic part, and the drive assembly 410 is activated to drive the rotating rod 420 to rotate. This causes the rotating rod 420 to drive the abrasive roller to rotate in contact with the circular hole of the annular plastic part through the electric lifting rod 430. While rotating, the electric abrasive roller 440 is driven to run, so that the abrasive roller rotates on its own axis to achieve the polishing operation of the circular hole of the annular plastic part. When the electric abrasive roller 440 is rotating and polishing, the connecting pipe 453 and the dust suction pipe 452 will rotate synchronously with the electric abrasive roller 440. At the same time as polishing, the cleaning assembly 450 runs synchronously to absorb and clean the debris generated during polishing.
[0037] In some embodiments, such as Figures 2-5 As shown, in a preferred embodiment of the present invention, the cleaning component 450 further includes a collection box 455 fixedly connected to one side of the workbench 100. A fan 456 is installed at the bottom of the collection box 455. The end of the fixed pipe 454 away from the connecting pipe 453 is connected to the top of the collection box 455. A filter frame 457 is fixedly connected to the inner wall of the collection box 455.
[0038] In this embodiment, when the cleaning component 450 is running, the fan 456 is started by the controller. The fan 456 will discharge the air in the collection box 455, creating a negative pressure inside the collection box 455. This causes the fixed pipe 454 and the connecting pipe 453 to adsorb the external air. Under the action of the connecting pipe 453, the suction pipe 452 will simultaneously adsorb the debris generated during the polishing of the abrasive roller during rotation. The adsorbed debris will enter the collection box 455 through the connecting pipe 453 and the fixed pipe 454, and be intercepted and collected by the filter frame 457. By adsorbing the debris generated during polishing, it is beneficial to avoid the debris generated during polishing from remaining in the circular hole, thereby avoiding repeated friction between the abrasive roller and the hole wall, ensuring the polishing effect of the abrasive roller on the circular hole of the annular plastic part.
[0039] A removable cover is bolted to one side of the collection box 455. When it is necessary to clean the debris inside the filter frame 457, the cover can be opened to clean the debris inside the filter frame 457.
[0040] In some embodiments, such as Figures 2-3 As shown, in a preferred embodiment of the present invention, the drive assembly 410 includes two first gears 411 rotatably connected to one side of the fixed plate 300, the two first gears 411 meshing together, a first motor 412 fixedly connected to one side of the fixed plate 300, the output shaft of the first motor 412 fixedly connected to one end of one of the first gears 411, and the inner wall of the other first gear 411 fixedly connected to the surface of the rotating rod 420.
[0041] In this embodiment, when the first motor 412 is started by the controller, the output shaft of the first motor 412 will drive one of the first gears 411 to rotate, and under the action of the other first gear 411, it will drive the rotating rod 420 to rotate synchronously, ensuring the stability of the connection between the connecting pipe 453 and the fixed pipe 454 while driving the rotating rod 420 to rotate.
[0042] In some embodiments, such as Figure 4 As shown, in a preferred embodiment of the present invention, a sealing bearing 458 is embedded in one end of the fixing tube 454, and the inner edge of the sealing bearing 458 is fixedly connected to the surface of the connecting tube 453.
[0043] In this embodiment, the outer edge of the sealing bearing 458 is fixedly connected to the inner wall of the fixed tube 454. When the rotating rod 420 drives the connecting tube 453 to rotate, the sealing bearing 458 will ensure the sealing of the connection between the connecting tube 453 and the fixed tube 454.
[0044] In some embodiments, such as Figure 4 As shown, in a preferred embodiment of the present invention, the middle part of the connecting pipe 453 is provided as a corrugated pipe, and the connecting pipe 453 is a rubber component.
[0045] In this embodiment, when the electric lifting rod 430 moves, it will cause the corrugated pipe of the connecting pipe 453 to extend or retract, thereby ensuring the stability of the connecting pipe 453 during use when the device is running.
[0046] In some embodiments, such as Figure 3 As shown, in a preferred embodiment of the present invention, a limiting rod 460 is fixedly connected to the other side of the fixing plate 300. The end of the limiting rod 460 away from the fixing plate 300 and the end of the suction pipe 452 close to the fixing plate 300 are located on the same vertical plane.
[0047] In this embodiment, when the annular plastic part is placed into the three-jaw chuck 200, one end of the annular plastic part is made to fit against the end of the limiting rod 460 away from the fixing plate 300, thereby ensuring that one end of the annular plastic part, one end of the dust suction pipe 452 and one end of the abrasive roller are on the same vertical plane, thus ensuring that the circular hole of the annular plastic part is fully polished and ensuring the polishing effect of the circular hole of the annular plastic part.
[0048] In some embodiments, such as Figure 4 As shown, in a preferred embodiment of the present invention, the surface of the suction pipe 452 is connected to a guide frame 459, and the opening of the guide frame 459 is funnel-shaped.
[0049] In this embodiment, when the surface of the abrasive roller contacts the inner wall of the circular hole of the annular plastic part, the guide frame 459 does not contact the interior. The guide frame 459 is inclined, which helps the debris generated during polishing to enter the dust suction pipe 452 better.
[0050] In some embodiments, such as Figure 5 As shown, in a preferred embodiment of the present invention, the inner walls of the filter frame 457 are inclined on all four sides.
[0051] In this embodiment, the debris entering the collection box 455 will remain in the filter frame 457. When the fan 456 is turned off, the debris remaining in the filter frame 457 will lose the suction of the wind. Under the action of the inclined inner wall of the filter frame 457, it will slide down to the lower end of the filter frame 457 and gather better, which is beneficial to improving the collection effect of the filter frame 457 on debris, while ensuring the ventilation effect of the filter frame 457.
[0052] It should be noted that the motors, electric actuators, and sealed bearings mentioned above are all components with relatively mature existing technologies. Specific models can be selected according to actual needs. At the same time, the motors, electric actuators, and power supplies can be powered by built-in power supplies or by AC power. The specific power supply method should be selected according to the situation, and will not be elaborated here.
[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A polishing device for the interior of plastic parts, comprising a worktable (100), wherein a fixing plate (300) and a three-jaw chuck (200) are fixedly connected to the top of the worktable (100), characterized in that: It also includes a polishing mechanism (400), which includes a drive assembly (410) disposed on one side of a fixed plate (300), a rotating rod (420) rotatably connected to the inner wall of the fixed plate (300), an electric lifting rod (430) mounted on the surface of the rotating rod (420), an electric abrasive roller (440) mounted on one end of the electric lifting rod (430), and a cleaning assembly (450) disposed on one side of the electric lifting rod (430). The cleaning assembly (450) includes a fixed rod (451) fixedly connected to one side of the electric lifting rod (430). A vacuum pipe (452) is fixedly connected to one end of the fixed rod (451) away from the electric lifting rod (430). A connecting pipe (453) is fixedly connected to the inner wall of the rotating rod (420). One end of the connecting pipe (453) is connected to the vacuum pipe (452), and the other end of the connecting pipe (453) is rotatably connected to a fixed pipe (454).
2. The internal polishing device for plastic parts according to claim 1, characterized in that, The cleaning assembly (450) also includes a collection box (455) fixedly connected to one side of the workbench (100). A fan (456) is installed at the bottom of the collection box (455). The end of the fixed pipe (454) away from the connecting pipe (453) is connected to the top of the collection box (455). A filter frame (457) is fixedly connected to the inner wall of the collection box (455).
3. The internal polishing device for plastic parts according to claim 2, characterized in that, The drive assembly (410) includes two first gears (411) rotatably connected to one side of the fixed plate (300), the two first gears (411) meshing together, a first motor (412) is fixedly connected to one side of the fixed plate (300), the output shaft of the first motor (412) is fixedly connected to one end of one of the first gears (411), and the inner wall of the other first gear (411) is fixedly connected to the surface of the rotating rod (420).
4. The internal polishing device for plastic parts according to claim 3, characterized in that, A sealed bearing (458) is embedded in one end of the fixed tube (454), and the inner edge of the sealed bearing (458) is fixedly connected to the surface of the connecting tube (453).
5. The internal polishing device for plastic parts according to claim 4, characterized in that, The middle part of the connecting pipe (453) is corrugated, and the connecting pipe (453) is a rubber component.
6. The internal polishing device for plastic parts according to claim 5, characterized in that, A limiting rod (460) is fixedly connected to the other side of the fixing plate (300). The end of the limiting rod (460) away from the fixing plate (300) and the end of the suction pipe (452) near the fixing plate (300) are located on the same vertical plane.
7. The internal polishing device for plastic parts according to claim 6, characterized in that, The surface of the suction pipe (452) is connected to a guide frame (459), and the opening of the guide frame (459) is funnel-shaped.
8. The internal polishing device for plastic parts according to claim 2, characterized in that, The inner walls of the filter frame (457) are all inclined on all four sides.