Plastic part polishing device and polishing system

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By designing a plastic piece grinding device integrating the first grinding assembly, the second grinding assembly and the flexible force control assembly, the problems of low grinding efficiency and high production cost in the prior art are solved, and efficient and low-cost grinding effect are achieved.

CN222903483UActive Publication Date: 2025-05-27HILDA AUTO PARTS (LIAONING) CO LTD

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Patent Information

Application Number: CN202421800049.0
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-07-29
Publication Date: 2025-05-27
Estimated Expiration: 2034-07-29

AI Technical Summary

Technical Problem

In the prior art, plastic parts are grinding efficiency and high production costs, especially in the polishing process of plastic parts with small internal space.

Method used

A grinding device including a first grinding assembly, a second grinding assembly and two flexible force control components is designed, and efficient grinding of the interior and exterior of the plastic part is achieved through the combination of the flexible force control assembly and the vibration assembly.

Benefits of technology

It improves the grinding efficiency of plastic parts, reduces production costs, ensures the grinding quality, and reduces the loss of abrasives.

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Abstract

The utility model relates to the technical field of automotive trim manufacturing, in particular to a plastic part polishing device and a polishing system. The plastic part grinding device comprises a first grinding assembly, a second grinding assembly and two flexible force control assemblies, the output ends of the two flexible force control assemblies are oppositely arranged and connected with the first grinding assembly and the second grinding assembly correspondingly, and the first grinding assembly is used for grinding and trimming the outer portion of a plastic part. And the second grinding assembly is used for grinding and trimming the interior of the plastic part. As the first polishing assembly and the second polishing assembly are integrated on one device, the interior and the exterior of the plastic part can be polished, the station rhythm is saved, and meanwhile the polishing efficiency of the plastic part is improved. Due to the fact that the flexible force control assembly is arranged, the grinding quality can be guaranteed, loss of grinding materials is reduced, and the production cost of plastic parts is reduced.

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Description

Technical Field

[0001] The utility model relates to the technical field of automobile interior decoration manufacturing, in particular to a plastic part grinding device. Background Art

[0002] At present, plastic parts for automobile interiors have parting lines during the injection molding process. In the prior art, in order to ensure the flatness of the surface of the plastic parts, they need to be polished and trimmed. Since some plastic parts have complex structures and small internal operating space, most of them are polished and trimmed manually or semi-automatically, which makes the polishing efficiency low. When the manual polishing force is too large, it will cause excessive scratches on the surface of the plastic parts after polishing, which will reduce the qualified rate of the product and increase the production cost. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a plastic part grinding device and a grinding system, which solve the technical problems of low grinding efficiency and high production cost of plastic parts with small internal space.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0007] An embodiment of the utility model provides a plastic part grinding device, comprising a first grinding component, a second grinding component and two flexible force control components; the output ends of the two flexible force control components are arranged in reverse and are respectively connected to the first grinding component and the second grinding component; the first grinding component is used to grind and trim the outside of the plastic part; the second grinding component is used to grind and trim the inside of the plastic part.

[0008] Preferably, a vibration component is also included between the first grinding component and the flexible force control component; the vibration component includes a shell and an eccentric unit, the eccentric unit is located in the shell and is rotatably connected to the shell, the bottom plate of the flexible force control component is connected to the top of the shell, and the first grinding component is connected to the bottom of the shell; an air inlet and an air outlet are provided on the shell, and the air inlet is arranged corresponding to the eccentric unit; when air enters the air inlet, the eccentric unit rotates to generate centrifugal force to drive the first grinding component to vibrate.

[0009] Preferably, the eccentric unit includes fan blades, a connecting shaft and an eccentric cam; the fan blades and the eccentric cam are both mounted and fixed on the connecting shaft; the upper and lower ends of the connecting shaft are rotatably connected to the shell through bearing units respectively; the air inlet is arranged corresponding to the fan blades, and when air enters the air inlet, the fan blades drive the connecting shaft to rotate and then drive the eccentric cam to rotate, and the eccentric cam generates centrifugal force to drive the first grinding component to vibrate.

[0010] Preferably, the eccentric unit further comprises a balancing block sleeved and fixed on the connecting shaft.

[0011] Preferably, the shell includes a first connecting shell and a second connecting shell which are buckled together up and down; the air inlet is located on the first connecting shell, and the first grinding assembly is connected to the bottom of the second connecting shell; the upper and lower ends of the connecting shaft rotate with the first connecting shell and the second connecting shell through bearing units respectively.

[0012] Preferably, the first polishing assembly comprises a sandpaper base and flocked sandpaper; the sandpaper base is connected to the bottom of the shell; the flocked sandpaper and the sandpaper base are detachably connected.

[0013] Preferably, the second grinding assembly includes a driving motor and a grinding rod; the fixed end of the driving motor is connected to the output end of the flexible force control assembly through a connecting piece, and the output end of the driving motor is connected to the grinding rod to drive the grinding rod to rotate.

[0014] Preferably, the two flexible force control components are connected via a connecting plate.

[0015] The embodiment of the utility model further provides a plastic part grinding system, which adopts the above-mentioned plastic part grinding device and also includes a six-axis robotic arm; the plastic part grinding device is arranged at the moving end of the six-axis robotic arm.

[0016] (III) Beneficial effects

[0017] The beneficial effects of the utility model are:

[0018] The utility model discloses a plastic part grinding device, comprising a first grinding component, a second grinding component and two flexible force control components, wherein the output ends of the two flexible force control components are arranged in reverse and are respectively connected to the first grinding component and the second grinding component, wherein the first grinding component is used to grind and trim the outside of the plastic part, and the second grinding component is used to grind and trim the inside of the plastic part. Since the first grinding component and the second grinding component are integrated into one device, the inside and the outside of the plastic part can be polished, which saves the workstation cycle and improves the plastic part grinding efficiency. Since the flexible force control component is provided, the grinding quality can be guaranteed, and the loss of abrasive can be reduced, thereby reducing the production cost of the plastic part.

[0019] The utility model discloses a plastic part grinding system, which includes a plastic part grinding device, thereby saving the workstation cycle and improving the plastic part grinding efficiency. The flexible force control component can ensure the grinding quality, reduce the loss of abrasives, and reduce the production cost of plastic parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the plastic part grinding device in the first embodiment;

[0021] Figure 2is an exploded schematic diagram of the vibration component;

[0022] Figure 3 It is a structural schematic diagram of the plastic part grinding system in the second embodiment.

[0023] [Description of Reference Numerals]

[0024] 1: first grinding component; 11: sandpaper base; 12: flocking sandpaper;

[0025] 2: second grinding component; 21: driving motor; 22: grinding rod; 23: connecting piece;

[0026] 3: Flexible force control components;

[0027] 4: vibration assembly; 41: housing; 411: first connecting shell; 412: second connecting shell; 42: eccentric unit; 421: fan blade; 422: connecting shaft; 423: eccentric cam; 424: balance block; 43: bearing unit;

[0028] 5: Connecting plate;

[0029] 6: Six-axis robotic arm. DETAILED DESCRIPTION

[0030] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0031] Embodiment 1

[0032] like Figure 1 As shown, this embodiment provides a plastic part grinding device, which includes a first grinding component 1, a second grinding component 2 and two flexible force control components 3, and the two flexible force control components 3 are connected by a connecting plate 5.

[0033] The output ends of the two flexible force control components 3 are set in opposite directions and are respectively connected to the first polishing component 1 and the second polishing component 2. The first polishing component 1 is used to polish and trim the outside of the plastic part, and the second polishing component 2 is used to polish and trim the inside of the plastic part. Since the first polishing component 1 and the second polishing component 2 are integrated into one device, the inside and outside of the plastic part can be polished, which saves the workstation cycle and improves the polishing efficiency of the plastic part. At the same time, since the output ends of the two flexible force control components 3 are set in opposite directions, interference between the first polishing component 1 and the second polishing component 2 during operation is avoided. Since the flexible force control component 3 is provided, it can ensure that the contact force between the polishing component thereon and the workpiece is constant, thereby ensuring the polishing quality, reducing the loss of abrasives, and reducing the production cost of plastic parts.

[0034] It should be noted that the flexible force control component 3 can output a constant force within the corresponding floating range, thereby actively compensating for the loss of abrasive during the grinding process and the positioning error of the workpiece, and the magnitude of the output force can be freely set to make the product grinding quality more stable, and the contact surface can be controlled within the set force value range. In this embodiment, the accuracy of the flexible force control component 3 is ±2N. The specific structure and principle of the flexible force control component 3 are all existing technologies and will not be repeated here.

[0035] like Figure 1 As shown, in order to improve the grinding effect of the first grinding component 1, a vibration component 4 is also included between the first grinding component 1 and the flexible force control component 3. The vibration component 4 includes a shell 41 and an eccentric unit 42. The eccentric unit 42 is located in the shell 41 and is rotatably connected to the shell 41. The bottom plate of the flexible force control component 3 is connected to the top of the shell 41, and the first grinding component 1 is connected to the bottom of the shell 41. An air inlet and an air outlet are provided on the shell 41, and the air inlet is arranged corresponding to the eccentric unit 42. When air enters the air inlet, the eccentric unit 42 rotates to generate centrifugal force to drive the first grinding component 1 to vibrate.

[0036] like Figure 2 As shown, the eccentric unit 42 includes a fan blade 421, a connecting shaft 422 and an eccentric cam 423. The fan blade 421 and the eccentric cam 423 are both sleeved and fixed on the connecting shaft 422. The upper and lower ends of the connecting shaft 422 are rotatably connected to the housing 41 through the bearing unit 43 respectively. The air inlet is arranged corresponding to the fan blade 421. When the air inlet enters the air inlet, the fan blade 421 drives the connecting shaft 422 to rotate and then drives the eccentric cam 423 to rotate. The eccentric cam 423 generates centrifugal force to drive the first grinding assembly 1 to vibrate. In order to adjust the vibration frequency, the eccentric unit 42 also includes a balance block 424 sleeved and fixed on the connecting shaft 422.

[0037] For easy installation, the housing 41 includes a first connecting shell 411 and a second connecting shell 412 that are buckled up and down, the air inlet is located on the first connecting shell 411, the first polishing assembly 1 is connected to the bottom of the second connecting shell 412, and the upper and lower ends of the connecting shaft 422 are respectively rotated with the first connecting shell 411 and the second connecting shell 412 through the bearing unit 43. In this embodiment, the structure of the bearing unit 43 is not specifically limited, as long as the relative rotation of the two can be achieved.

[0038] In this embodiment, the first polishing assembly 1 includes a sandpaper base 11 and flocked sandpaper 12, the sandpaper base 11 is connected to the bottom of the housing 41, and the flocked sandpaper 12 and the sandpaper base 11 are detachably connected by Velcro. The flocked sandpaper 12 is used to polish the outside of the plastic part. The second polishing assembly 2 includes a drive motor 21 and a polishing rod 22, the fixed end of the drive motor 21 is connected to the output end of the flexible force control assembly 3 through a connector 23, and the output end of the drive motor 21 is connected to the polishing rod 22 to drive the polishing rod 22 to rotate. The polishing rod 22 can extend into the interior of the plastic part and is used to polish the interior of the plastic part.

[0039] Embodiment 2

[0040] like Figure 3 As shown, this embodiment provides a plastic part grinding system, which adopts the plastic part grinding device in the first embodiment and also includes a six-axis robot arm 6, and the plastic part grinding device is arranged at the moving end of the six-axis robot arm 6.

[0041] Since the plastic part grinding system includes the plastic part grinding device, the station cycle is saved and the plastic part grinding efficiency is improved. Since the flexible force control component 3 is provided, the grinding quality can be guaranteed, the loss of abrasive can be reduced, and the production cost of the plastic part can be reduced.

[0042] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0045] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0046] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A plastic part grinding device, characterized in that: It comprises a first grinding component (1), a second grinding component (2) and two flexible force control components (3); The output ends of the two flexible force control components (3) are arranged in opposite directions and are respectively connected to the first polishing component (1) and the second polishing component (2); The first grinding component (1) is used for grinding and trimming the exterior of the plastic part; The second grinding component (2) is used for grinding and trimming the inside of the plastic part.

2. The plastic part grinding device according to claim 1, characterized in that: A vibration component (4) is also included between the first polishing component (1) and the flexible force control component (3); The vibration component (4) comprises a shell (41) and an eccentric unit (42), wherein the eccentric unit (42) is located inside the shell (41) and is rotatably connected to the shell (41), the bottom plate of the flexible force control component (3) is connected to the top of the shell (41), and the first grinding component (1) is connected to the bottom of the shell (41); The housing (41) is provided with an air inlet and an air outlet, and the air inlet is arranged corresponding to the eccentric unit (42); When air enters the air inlet, the eccentric unit (42) rotates to generate centrifugal force to drive the first grinding assembly (1) to vibrate.

3. The plastic part grinding device according to claim 2, characterized in that: The eccentric unit (42) comprises a fan blade (421), a connecting shaft (422) and an eccentric cam (423); The fan blade (421) and the eccentric cam (423) are both sleeved and fixed on the connecting shaft (422); The upper and lower ends of the connecting shaft (422) are rotatably connected to the housing (41) via bearing units (43) respectively; The air inlet is arranged corresponding to the fan blade (421). When air enters the air inlet, the fan blade (421) drives the connecting shaft (422) to rotate and then drives the eccentric cam (423) to rotate. The eccentric cam (423) generates centrifugal force to drive the first grinding component (1) to vibrate.

4. The plastic part grinding device according to claim 3, characterized in that: The eccentric unit (42) further comprises a balancing block (424) sleeved on and fixed on the connecting shaft (422).

5. The plastic part grinding device according to claim 3, characterized in that: The housing (41) comprises a first connecting housing (411) and a second connecting housing (412) which are buckled together in an upper and lower manner; The air inlet is located on the first connecting shell (411), and the first polishing assembly (1) is connected to the bottom of the second connecting shell (412); The upper and lower ends of the connecting shaft (422) rotate with the first connecting shell (411) and the second connecting shell (412) respectively through bearing units (43).

6. The plastic part grinding device according to claim 2, characterized in that: The first grinding assembly (1) comprises a sandpaper base (11) and flocked sandpaper (12); The sandpaper base (11) is connected to the bottom of the housing (41); The flocking sandpaper (12) and the sandpaper base (11) are detachably connected.

7. The plastic part grinding device according to claim 1, characterized in that: The second grinding assembly (2) comprises a driving motor (21) and a grinding rod (22); The fixed end of the driving motor (21) is connected to the output end of the flexible force control component (3) via a connecting piece (23), and the output end of the driving motor (21) is connected to the grinding rod (22) to drive the grinding rod (22) to rotate.

8. The plastic part grinding device according to claim 1, characterized in that: The two flexible force control components (3) are connected via a connecting plate (5).

9. A plastic part grinding system, characterized in that: The plastic part grinding device according to any one of claims 1 to 8 further comprises a six-axis robotic arm (6); The plastic part grinding device is arranged at the moving end of the six-axis mechanical arm (6).