A burr removing mechanism for motorcycle injection molding parts

Abstract

The utility model relates to injection molding part processing technical field, concretely relates to a rough edge removal mechanism for motorcycle injection molding part processing, including rotation motor, rotation axis, threaded rod, limit plate and polishing cylinder, rotation motor output end is connected rotation axis vertically downward, rotation axis bottom fixed threaded rod, and the connecting place is equipped with the limit plate, and the limit plate bottom is equipped with the limit block, polishing cylinder is embedded connection through the top limit slot and the limit block, is set in the threaded rod outside, and is fixed by locking nut and limit plate together. The annular groove is set up in the outer wall of polishing cylinder, and the surface is all polishing material, rotation motor drives polishing cylinder rotation, and the whole lifting is driven by external driving mechanism, makes annular groove different step surface respectively contact workpiece edge top surface, bottom surface and side, realizes multidirectional rough edge removal, and this mechanism can finish the rough edge treatment of composite edge in single clamping through the cooperation of annular groove structure and whole lifting, helps to reduce repeated positioning, promotes polishing efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of injection molding processing technology, and in particular to a burr removal mechanism for processing motorcycle injection molded parts. Background Technology

[0002] In the production of injection-molded motorcycle parts, molten plastic inevitably forms flash or overflow at the mold parting surface, gate, and venting channels, collectively referred to as burrs. If these burrs are not removed, they not only directly affect the appearance quality and assembly precision of the parts, but may also cause premature cracking due to stress concentration during vehicle use, or cause debris to jam the transmission system, posing a potential threat to the safety and reliability of the motorcycle. Therefore, developing efficient and precise burr removal devices is of great significance for ensuring product quality and improving the level of production automation.

[0003] In existing technologies, the removal of burrs from injection molded parts mainly relies on two methods: manual grinding and mechanical grinding. Manual grinding is the most common method in production, where operators use files, sandpaper, or handheld electric grinders, relying on experience to trim the edges of the workpiece. Mechanical grinding, on the other hand, uses fixed automated equipment with motors driving standard grinding wheels such as grinding wheels and flap wheels to grind the workpiece along a preset path. Both methods can achieve basic removal of burrs.

[0004] However, both traditional methods exhibit significant drawbacks when dealing with the edges of injection-molded parts with multidimensional burrs. While manual grinding allows for flexible adjustments to the grinding area based on the operator's feel, its quality stability relies entirely on individual skill, resulting in high labor intensity and low efficiency, making it difficult to meet the consistency requirements of mass production. In automated mechanical grinding, standard grinding tools are typically rigidly mounted, with a fixed angle between their working surface and the drive shaft. This rigid structure prevents the grinding tool from dynamically adjusting the contact angle between its working surface and the complex contours of the workpiece during processing. Therefore, the equipment can only efficiently grind the burrs on the sides that are in contact with the grinding tool plane. When encountering burrs on the side, top, and bottom surfaces of an edge simultaneously, for the vertical top and bottom burrs, the grinding tool cannot effectively contact and apply force at an angle, often resulting in the burrs being bent rather than removed, producing overflow or secondary burrs. To solve this problem, processing must be interrupted, the workpiece re-clamped, and the top or bottom surface to be processed rotated to a position parallel to the grinding tool's working surface. This operation mode, which involves repeated loading, unloading, and repositioning due to the inability of the tool to adaptively adjust the bonding surface, not only significantly reduces production efficiency but also introduces cumulative errors due to multiple clamping, severely restricting the improvement of processing accuracy and yield, thus forming a key technical bottleneck in the automated deburring process. Utility Model Content

[0005] The purpose of this utility model is to provide a burr removal mechanism for processing injection molded motorcycle parts. It solves the technical problems caused by the rigid structure, single working surface, and inability to dynamically adjust the fitting angle of traditional grinding tools. This results in the inability to efficiently and accurately remove multi-dimensional burrs on the side, top, and bottom surfaces of injection molded parts in one go, which requires repeated loading and unloading of workpieces and multiple positioning, leading to low processing efficiency, poor product consistency, and easy generation of secondary burrs.

[0006] To achieve the above objectives, this utility model provides a burr removal mechanism for processing injection molded motorcycle parts, including a rotating motor. The output end of the rotating motor is vertically downward and has a rotating shaft. A threaded rod is fixedly installed at the bottom end of the rotating shaft. A limiting plate is fixedly installed at the connection between the threaded rod and the rotating shaft. A limiting block is fixedly installed at the bottom end of the limiting plate. The limiting block is embedded in a limiting groove. The limiting groove is opened at the top of a grinding cylinder. The grinding cylinder is sleeved on the outside of the threaded rod and located below the limiting plate. Two locking nuts are threadedly installed on the threaded rod below the grinding cylinder. An annular groove is opened on the lower outer side of the grinding cylinder, and the surfaces of the grinding cylinder and the annular groove are both made of grinding material.

[0007] The housing of the output end of the rotating motor is bolted to the top of the rotating plate, and a support cylinder is fixedly installed at the bottom of the rotating plate opposite to the rotating motor.

[0008] The rotating plate and the support cylinder are rotatably mounted with a rotating shaft inside, and the limiting plate is located below the support cylinder. A photoelectric probe is fixedly installed at the bottom of the rotating plate adjacent to the support cylinder.

[0009] A drive shaft is installed through the other side of the rotating plate, and the top end of the drive shaft passes through the corner plate and is located at the output end of the drive motor.

[0010] The housing of the drive motor output end is bolted to the top of the corner plate, and several diagonal bracing plates are installed at intervals at the top corner of the corner plate.

[0011] The other side of the corner plate is bolted to the lower side of the extension plate, and the extension plate is provided with a number of fixing holes spaced apart above the corner plate.

[0012] This utility model discloses a burr removal mechanism for processing injection-molded motorcycle parts, comprising a rotary motor with its output end vertically downward. The output end of the rotary motor is connected to a rotating shaft, and a threaded rod is fixedly mounted at the bottom end of the rotating shaft. An annular limiting plate is provided at the connection between the rotating shaft and the threaded rod, and a downwardly extending limiting block is provided on the bottom surface of the limiting plate. A cylindrical grinding cylinder is fitted with the limiting block through a limiting groove at its top, allowing the grinding cylinder to rotate synchronously with the rotating shaft. The grinding cylinder is sleeved outside the threaded rod and located below the limiting plate. Two locking nuts screwed into the threaded rod, together with the limiting plate, achieve axial fixation of the grinding cylinder. An annular groove is provided on the lower outer wall of the grinding cylinder, and both the outer surface of the cylinder and the surface of the annular groove are covered with grinding material.

[0013] During operation, the mechanism is driven vertically by an external drive structure to switch the contact positions between the different stepped surfaces of the annular groove and the workpiece. Simultaneously, the drive motor, via a drive shaft, rotates a rotating plate horizontally, adjusting the horizontal angle of the rotating motor and grinding cylinder fixed on the plate. This horizontal angle adjustment capability allows the annular groove or outer surface of the grinding cylinder to more flexibly align with edges on the workpiece in different directions. When the entire mechanism is raised and lowered to select a suitable working surface for the annular groove, the coordinated adjustment of the horizontal angle allows this working surface to better conform to the workpiece contour, helping to adapt to edge structures with complex orientations and improving the adaptability and processing effect of the grinding. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the connection of the drive motor in an embodiment of this utility model.

[0017] Figure 3 This is a schematic diagram of the connection of the rotating motor according to an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the connection of the grinding cylinder in an embodiment of this utility model.

[0019] In the diagram: 101, rotating motor; 102, rotating shaft; 103, threaded rod; 104, limiting plate; 105, limiting block; 106, limiting groove; 107, grinding cylinder; 108, annular groove; 109, locking nut; 110, rotating plate; 111, support cylinder; 112, photoelectric probe; 113, drive shaft; 114, angle plate; 115, drive motor; 116, diagonal brace; 117, extension plate; 118, fixing hole. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] Please see Figures 1-4 .

[0022] A burr removal mechanism for processing injection-molded motorcycle parts is disclosed. The mechanism is mounted on an extension plate 117, which has several spaced fixing holes 118. These holes 118 are used to securely mount the entire mechanism to a multi-axis slide or other external drive equipment via bolts, providing a reliable connection base for the mechanism's precise movement in three-dimensional space. On one side of the extension plate 117, a corner plate 114 is vertically mounted via bolts. To enhance the structural stability and deformation resistance of the corner plate 114 under complex loads, several diagonal bracing plates 116 are spaced at the top corner of the corner plate 114. These diagonal bracing plates 116 effectively distribute and transfer the load to the extension plate 117. A drive motor 115 is fixedly mounted on the top of the corner plate 114 by bolts. The output end of the drive motor 115 is connected to a drive shaft 113. The drive shaft 113 passes through the corner plate 114 downwards and its end is connected to a rotating plate 110. The core function of the drive motor 115 is to drive the drive shaft 113 to rotate, thereby precisely controlling the rotating plate 110 to rotate horizontally around its axis.

[0023] A rotary motor 101 is bolted to the top of the rotating plate 110, and the output end of the rotary motor 101 is set vertically downward. The output end of the rotary motor 101 is connected to a rotating shaft 102, which passes downward through a support cylinder 111 fixedly installed at the bottom of the rotating plate 110. The support cylinder 111 provides crucial intermediate support for the slender rotating shaft 102, ensuring its smooth operation at high speeds and reducing vibration. A threaded rod 103 is fixedly installed at the bottom of the rotating shaft 102, and a limiting plate 104 is fixedly installed at the connection between the rotating shaft 102 and the threaded rod 103. A limiting block 105 is fixedly installed at the bottom end of the limiting plate 104. The limiting block 105 is designed to be precisely embedded in a limiting groove 106 specially opened at the top of the grinding cylinder 107. This fitting structure of the limiting block 105 and the limiting groove 106 realizes the circumferential limiting of the grinding cylinder 107, ensuring that the grinding cylinder 107 can rotate synchronously with the rotating shaft 102 without rotating relative to itself. The grinding cylinder 107 is sleeved on the outside of the threaded rod 103 and located below the limiting plate 104. Its axial position is fixed and clamped by two locking nuts 109 screwed into the lower end of the threaded rod 103. These two locking nuts 109 and the upper limiting plate 104 work together to firmly clamp the grinding cylinder 107 in the middle, completing the final connection of the power transmission chain from the rotating motor 101 to the grinding cylinder 107. An annular groove 108 is provided on the lower outer side of the grinding cylinder 107, and the entire outer surface of the grinding cylinder 107 and the surface of the annular groove 108 are made of grinding material. This is the direct working part for performing the burr removal function. The upper and lower stepped platform design of the annular groove 108 is designed to process the vertical edges on the workpiece.

[0024] At the bottom end of the rotating plate 110, a photoelectric probe 112 is fixedly installed near the support cylinder 111. Its function is to identify the position and contour of the workpiece to be processed in real time, providing visual feedback for the precise control of the entire system. In this embodiment, the function of the drive motor 115 driving the rotating plate 110 to rotate through the drive shaft 113 is crucial. It enables the entire grinding assembly mounted on the rotating plate 110 to be flexibly adjusted in the horizontal plane as a whole. This adjustment capability allows the high-speed rotating grinding cylinder 107 to not only adapt to workpiece surfaces with different orientations, but also to dynamically adjust its azimuth angle during continuous grinding, so that the surface of the grinding cylinder 107 or the stepped surface of the annular groove 108 can more ideally fit the contour of the workpiece, thereby achieving comprehensive and precise burr removal of injection molded parts with complex curved surfaces or concave structures.

[0025] Working principle: The extension plate 117 is securely mounted on a multi-axis slide or other external drive structure through several fixing holes 118, thus providing a basis for the precise movement of the entire mechanism in three-dimensional space. The corner plate 114 is vertically mounted on one side below the extension plate 117 by bolts. Its structure is reinforced by several diagonal bracing plates 116 installed at the top corner. This design significantly enhances the rigidity of the corner plate 114 under dynamic loads, effectively preventing vibration or deformation that may occur during subsequent grinding operations. The housing of the output end of the drive motor 115 is fixed to the top of the corner plate 114 by bolts. Its output end is connected to the drive shaft 113 that passes through the corner plate 114. When the drive motor 115 starts, it drives the drive shaft 113 to rotate.

[0026] The rotation of the drive shaft 113 directly drives the rotating plate 110 mounted at its end, enabling the rotating plate 110 to rotate horizontally around the axis of the drive shaft 113. This horizontal rotation capability is key to the flexible grinding of the entire mechanism, providing crucial angular freedom in the horizontal direction for all subsequent grinding actions. The housing of the output end of the rotary motor 101 is bolted to the top of the rotating plate 110, with its output end pointing vertically downwards and connected to the rotating shaft 102. A support cylinder 111 is fixedly mounted at the bottom of the rotating plate 110 opposite to the rotary motor 101. The rotating shaft 102 passes through the rotating plate 110 and through the interior of the support cylinder 111, allowing it to rotate smoothly within it. A threaded rod 103 is fixedly mounted at the bottom of the rotating shaft 102, and a limit plate 104 is fixed at the connection between the two, located below the support cylinder 111. A limiting block 105 is fixedly installed at the bottom end of the limiting plate 104. The limiting block 105 is embedded in the limiting groove 106 opened at the top of the grinding cylinder 107. This circumferential limiting structure allows the grinding cylinder 107 to rotate synchronously with the rotating shaft 102 without rotating relative to itself. The grinding cylinder 107 is sleeved on the outside of the threaded rod 103 and located below the limiting plate 104. By screwing two locking nuts 109 into the threaded rod 103 below the grinding cylinder 107, together with the upper limiting plate 104, the grinding cylinder 107 is tightly clamped in the middle, completing the axial fixation and circumferential drive connection of the grinding cylinder 107.

[0027] When the rotating motor 101 starts, power is transmitted sequentially through the rotating shaft 102 and the threaded rod 103. Due to the engagement of the limiting block 105 and the limiting groove 106, the grinding cylinder 107 is driven to rotate at high speed, and the grinding material on its surface and the surface of the annular groove 108 begins to act on the workpiece. The photoelectric probe 112 is fixedly installed at the bottom of the rotating plate 110 and adjacent to the support cylinder 111. It continuously identifies and monitors the position of the workpiece to be ground throughout the process. Based on the feedback from the photoelectric probe 112, the operator or control system can precisely adjust the angular position of the rotating plate 110 through the drive motor 115, thereby changing the orientation of the high-speed rotating grinding cylinder 107. This dynamic angle adjustment mechanism allows the grinding cylinder 107 to adjust its tangential angle of contact with the workpiece in real time during movement, whether it is operating on its outer surface or the stepped surface of the annular groove 108. This ensures that the grinding force always acts on the burrs in the most effective direction and allows the grinding surface to better conform to the complex and varied contours of the workpiece. Especially for injection molded parts with concave or curved structures, this function effectively avoids grinding dead corners and surface scratches caused by improper angles, significantly improving the adaptability of grinding and the consistency of surface treatment.

[0028] The annular groove 108 and its upper and lower stepped platforms on the lower outer side of the grinding cylinder 107 are key to the multi-functional grinding capability of this mechanism. The height of the entire mechanism is adjusted via an external drive structure. When the upper stepped surface of the annular groove 108 is aligned with the workpiece, the upper vertical surface and related burrs of the workpiece can be ground; when the mechanism lowers so that the lower stepped surface of the annular groove 108 is aligned with the workpiece, the lower vertical surface of the workpiece can be effectively treated. Simultaneously, the remaining outer surface area of ​​the grinding cylinder 107, without the annular groove 108, can be used for conventional grinding of flat surfaces or convex contours of the workpiece. Combined with the angle adjustment capability provided by the drive motor 115, this mechanism achieves coordinated control of spatial position and working posture, enabling a single grinding cylinder 107 to handle burrs from multiple directions and angles on the workpiece, reducing the number of tool changes and simplifying the processing flow. This collaborative work between components allows the mechanism to adapt to the geometric features of different parts of the workpiece, achieving comprehensive and precise burr removal, effectively improving processing efficiency and surface treatment quality, while reducing the labor intensity of operators.

[0029] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A burr removal mechanism for processing injection molded motorcycle parts, comprising a rotating motor (101), characterized in that: The output end of the rotating motor (101) is vertically downward and has a rotating shaft (102). A threaded rod (103) is fixedly installed at the bottom end of the rotating shaft (102). A limiting plate (104) is fixedly installed at the connection between the threaded rod (103) and the rotating shaft (102). A limiting block (105) is fixedly installed at the bottom end of the limiting plate (104). The limiting block (105) is embedded in the limiting groove (106). The limiting groove (106) is opened at the top of the grinding cylinder (107). The grinding cylinder (107) is sleeved on the outside of the threaded rod (103) and located below the limiting plate (104). The threaded rod (103) is located below the grinding cylinder (107) and has two locking nuts (109) installed by threads. An annular groove (108) is opened on the lower outside of the grinding cylinder (107). The surfaces of the grinding cylinder (107) and the annular groove (108) are both made of grinding material.

2. The burr removal mechanism for motorcycle injection molding as described in claim 1, characterized in that: The housing of the output end of the rotating motor (101) is bolted to the top of the rotating plate (110), and a support cylinder (111) is fixedly installed at the bottom of the rotating plate (110) opposite to the rotating motor (101).

3. The burr removal mechanism for motorcycle injection molding as described in claim 2, characterized in that: A rotating shaft (102) is rotatably installed inside the rotating plate (110) and the support cylinder (111), and a limiting plate (104) is located below the support cylinder (111). A photoelectric probe (112) is fixedly installed at the bottom of the rotating plate (110) adjacent to the support cylinder (111).

4. The burr removal mechanism for motorcycle injection molding as described in claim 3, characterized in that: A drive shaft (113) is installed through the other side of the rotating plate (110), and the top end of the drive shaft (113) passes through the corner plate (114) and is located at the output end of the drive motor (115).

5. The burr removal mechanism for motorcycle injection molding as described in claim 4, characterized in that: The housing of the output end of the drive motor (115) is bolted to the top of the corner plate (114), and several diagonal bracing plates (116) are installed at intervals at the top corner of the corner plate (114).

6. The burr removal mechanism for motorcycle injection molding as described in claim 5, characterized in that: The other side of the corner plate (114) is bolted to the lower side of the extension plate (117), and the extension plate (117) is provided with a plurality of fixing holes (118) spaced apart above the corner plate (114).

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