Lens frame processing and feeding structure and processing equipment

Abstract

The application relates to a mirror frame processing feeding structure and a processing equipment, which comprises an inner frame processing position and an outer frame processing position. The inner frame processing position is provided with a first X-axis translation platform. The first X-axis translation platform is provided with a Z-axis rotating table and a first clamp. The Z-axis rotating table is provided with a second clamp located in the same horizontal processing plane as the first clamp. The first clamp and the second clamp are used for jointly clamping a mirror frame blank. The mirror frame processing feeding structure and the processing equipment designed by the application directly install the clamp of the inner frame processing position on the shared precision plane motion mechanism, cancel the traditional Z-axis height adjusting mechanism from the structure, simplify the equipment, reduce the cost, and fundamentally avoid the workpiece deformation caused by the non-co-planar clamping surface, thereby ensuring the long-term stability of processing. Meanwhile, the multi-axis mechanism of the outer frame processing position receives the workpiece in a flexible track, improves the success rate and reliability of process conversion, and makes the overall operation of the equipment efficient and smooth.

Description

Technical Field

[0001] This application relates to the field of machining equipment technology, and in particular to a frame processing feeding structure and processing equipment. Background Technology

[0002] The manufacturing of eyeglass frames, especially mid-to-high-end metal or acetate frames, typically involves multiple complex processing steps. On an automated production line, a typical process includes: first, rough machining of the inner frame contour of a piece of acetate to form a frame blank; then, transferring and re-fixing the frame blank for fine machining of the outer frame contour, curved surfaces, and other details. To improve efficiency, modern processing equipment usually integrates two or more workstations, such as an inner frame machining station and an outer frame machining station, to achieve continuous automated operation.

[0003] However, existing processing equipment of this type, especially in the design of its workpiece clamping and transfer mechanism, has inherent defects. To ensure that the two clamps can accurately and coplanarly clamp the thin-walled frame material and prevent stress deformation during clamping, a Z-axis height adjustment mechanism, perpendicular to the processing plane, is usually installed below at least one clamp. This adjustment is typically achieved through fine-tuning screws or shims. However, under long-term, high-frequency operation and vibration, the threads and other components of the adjustment mechanism are prone to slight loosening, causing the previously adjusted accuracy to "drift." This necessitates periodic shutdowns for inspection and readjustment, affecting the continuity and stability of production.

[0004] Furthermore, during process transitions—specifically, the transfer and fixing of the frame blank from the inner frame machining station to the outer frame machining station—existing technologies often employ rigid linear motion for direct docking or fitting. This "rigid" assembly method has a low tolerance for error and is highly sensitive to the dimensional tolerances and elastic deformation of the frame blank. Even slight deviations can easily lead to assembly failure, jamming, or even crushing damage to the workpiece, thereby reducing the overall yield and operational reliability of the processing equipment. Utility Model Content

[0005] To address the aforementioned issues, this application provides a simplified equipment structure and convenient maintenance and inspection method for feeding and processing mirror frames.

[0006] To achieve the above objectives, in a first aspect, embodiments of this application provide a frame processing and feeding structure, including an inner frame processing position and an outer frame processing position. The inner frame processing position is provided with a first X-axis translation platform, a Z-axis rotary table and a first clamp are provided on the first X-axis translation platform, and a second clamp located on the same horizontal processing plane as the first clamp is provided on the Z-axis rotary table. The first clamp and the second clamp are used to jointly clamp a frame blank. The outer frame processing position is provided with a multi-axis spatial motion mechanism and a third clamp driven by the multi-axis spatial motion mechanism. The third clamp is used to fix the frame blank processed by the inner frame processing position.

[0007] Preferably, the first X-axis translation platform includes a servo motor, a linear guide rail, and a base. The base is slidably mounted on the linear guide rail, and the output shaft of the servo motor is connected to the base for transmission to drive the base to move along the linear guide rail.

[0008] Preferably, telescopic covers are provided on both sides of the base in the direction of movement, and the servo motor and linear guide rail are both housed within the telescopic covers.

[0009] Preferably, the top surface of the telescopic cover is an inclined surface.

[0010] Preferably, both the first clamp and the second clamp are pneumatic grippers.

[0011] Preferably, a second X-axis translation platform is provided on the Z-axis rotary table, and the second fixture is mounted on the Z-axis rotary table via the second X-axis translation platform; wherein, after the inner frame processing position completes the processing of the frame blank, the second X-axis translation platform drives the second fixture to hold the frame blank at a preset junction position.

[0012] Preferably, the multi-axis spatial motion mechanism drives the third clamp to move into the inner frame of the frame blank in a continuous arc trajectory to tighten the inner contour of the frame blank.

[0013] Preferably, the third clamp includes at least two retractable clamping blocks that extend to abut against the inner contour of the inner frame and apply a preset clamping force, thereby enabling the third clamp to tighten the frame blank.

[0014] Preferably, the multi-axis spatial motion mechanism is further provided with an air nozzle, the opening of which faces the outer surface of the third clamp.

[0015] Secondly, embodiments of this application provide a frame processing device, including the frame processing feeding structure described in any embodiment of the first aspect.

[0016] The frame processing feeding structure and processing equipment designed in this application directly mounts the fixture of the inner frame processing position onto a shared precision planar motion mechanism, structurally eliminating the traditional Z-axis height adjustment mechanism. This simplifies the equipment, reduces costs, and fundamentally avoids workpiece deformation caused by non-coplanar clamping surfaces, ensuring long-term processing stability. Simultaneously, the multi-axis mechanism of the outer frame processing position receives the workpiece with a flexible trajectory, improving the success rate and reliability of process transitions, making the overall equipment operation efficient and smooth. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the frame processing and feeding equipment provided in the embodiments of this application.

[0018] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0019] Figure 3 This is a schematic diagram of the structure provided in the embodiments of this application, showing the first clamp and the second clamp jointly holding the object.

[0020] Figure 4 This is a schematic diagram of the planar structure of the frame processing and feeding structure provided in the embodiment of this application.

[0021] Figure 5 This is a schematic diagram showing the disassembled operation of the frame loading process provided in the embodiments of this application.

[0022] The components include: a frame processing and feeding structure 100, an inner frame processing station 101, an outer frame processing station 102, a frame processing equipment 200, an inner frame processing spindle unit 201, an outer frame processing spindle unit 202, a frame blank 300, a first X-axis translation platform 10, a servo motor 11, a linear guide rail 12, a base 13, a Z-axis rotary table 20, a second X-axis translation platform 21, a first fixture 30, a second fixture 40, a multi-axis spatial motion mechanism 50, a third fixture 60, and a clamping block 61. Detailed Implementation

[0023] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0024] See Figures 1 to 5 As shown, this application embodiment provides a frame processing feeding structure 100 and a frame processing equipment 200 including the frame processing feeding structure 100.

[0025] Specifically, such as Figure 1As shown, the frame processing and loading structure 100 includes an inner frame processing station 101 and an outer frame processing station 102. Correspondingly, the frame processing equipment 200 also includes an inner frame processing spindle unit 201 disposed above the inner frame processing station 101 and an outer frame processing spindle unit 202 disposed above the outer frame processing station 102. In the automated process, the frame processing and loading structure 100 is responsible for clamping, positioning, and transferring the frame material to cooperate with the inner frame processing spindle unit 201 to perform preliminary inner frame contour processing on the frame material, forming a frame blank 300. Subsequently, it is transferred to the outer frame processing station 102 to cooperate with the outer frame processing spindle unit 202 to perform fine processing on the outer frame contour and other curved surfaces of the frame blank 300, so as to continuously complete all processing steps of the inner and outer frames.

[0026] Next, the specific structural features of the frame processing and feeding structure 100 in the embodiments of this application will be described in detail.

[0027] like Figure 1 , Figure 2 , Figure 3 As shown, the frame processing and feeding structure 100 provided in this application embodiment mainly includes a first X-axis translation platform 10, a Z-axis rotary table 20, a first clamp 30, a second clamp 40, a multi-axis spatial motion mechanism 50, and a third clamp 60.

[0028] The inner frame processing position 101 is equipped with a first X-axis translation platform 10. This first X-axis translation platform 10 is the basis for the movement of the workpiece in the entire inner frame processing position, and is used to realize the overall translation of the workpiece in the X-axis direction. The first X-axis translation platform 10 is equipped with a Z-axis rotary table 20 and a first clamp 30. The first clamp 30 can be directly or through a connecting seat fixed to the first X-axis translation platform 10, serving as the reference for clamping actions, while the Z-axis rotary table 20 is used to drive the components above it to rotate around the Z-axis perpendicular to the processing plane, so as to realize actions such as picking up the frame material and adjusting the angle.

[0029] Specifically, the Z-axis rotary table 20 is equipped with a second clamp 40 located on the same horizontal machining plane as the first clamp 30. The first clamp 30 and the second clamp 40 are used to jointly clamp a mirror frame blank 300. This structural design ensures coplanarity of the clamping when the two clamps jointly clamp the mirror frame blank 300 without the need for an additional height adjustment mechanism in the Z-axis direction, thereby avoiding unnecessary stress or deformation on the mirror frame blank 300. In this embodiment, both the first clamp 30 and the second clamp 40 are pneumatic grippers.

[0030] Furthermore, the outer frame processing station 102 is equipped with a multi-axis spatial motion mechanism 50. In this embodiment, the multi-axis spatial motion mechanism 50 can be a five-axis or six-axis industrial robot arm, which has the ability to perform complex posture and trajectory movements in three-dimensional space. Simultaneously, a third clamp 60 is mounted on the end effector of the multi-axis spatial motion mechanism 50, the third clamp 60 being used to fix the mirror frame blank 300 processed by the inner frame processing station 101.

[0031] During operation, for example: the frame material is first driven by the Z-axis rotary table 20 to rotate to a predetermined position for material picking, and then rotated to a predetermined angle to clamp the frame material together with the first clamp 30 at the inner frame processing position 101 to complete the inner frame processing and form the frame blank 300; subsequently, the multi-axis spatial motion mechanism 50 of the outer frame processing position 102 drives the third clamp 60 to move to a preset junction position to receive and fix the frame blank 300 from the inner frame processing position 101; finally, the third clamp 60 takes the frame blank 300 away for fine processing of the outer frame.

[0032] In some embodiments, such as Figure 3 As shown, the first X-axis translation platform 10 includes a servo motor 11, a linear guide rail 12, and a base 13. The base 13 is slidably mounted on the linear guide rail 12. The output shaft of the servo motor 11 is connected to the base 13 for transmission, driving the base 13 to move along the linear guide rail 12. In this embodiment, by utilizing the closed-loop control and high dynamic response characteristics of the servo motor 11, the first X-axis translation platform 10 possesses extremely high positioning accuracy and repeatability, enabling it to strictly execute complex machining path instructions. Simultaneously, its excellent acceleration and deceleration performance allows the platform to perform rapid idle movement, effectively shortening non-machining time.

[0033] In some embodiments, telescopic covers (not shown) are provided on both sides of the base 13 in the direction of movement. When the base 13 moves along the linear guide rail 12, the telescopic covers will stretch or compress accordingly, thereby forming a dynamic, continuous closed or semi-closed cavity. The servo motor 11 and the linear guide rail 12 are both housed within the telescopic covers, protecting them from the erosion and contamination of chips and dust generated during processing. This effectively reduces the risk of jamming, wear, or corrosion of moving parts, ensuring the reliability and stability of equipment operation.

[0034] In practice, the top surface of the telescopic cover is sloped. This actively guides the chips to slide to both sides into the collection area, effectively preventing the accumulation of waste chips in the telescopic cover and reducing the burden of daily cleaning and maintenance.

[0035] In some embodiments, such as Figure 1 , Figure 2As shown, a second X-axis translation platform 21 is provided on the Z-axis rotary table 20, and the second fixture 40 is mounted on the Z-axis rotary table 20 through the second X-axis translation platform 21; wherein, after the inner frame processing position 101 completes the processing of the frame blank 300, the second X-axis translation platform 21 drives the second fixture 40 to hold the frame blank 300 at a preset junction position.

[0036] Thus, by setting up the second X-axis translation platform 21, the second clamp 40 is given an independent linear translation capability along the X-axis, in addition to the rotational movement of the Z-axis rotary table 20. On the one hand, by driving the second X-axis translation platform 21, the distance between the second clamp 40 and the fixed first clamp 30 can be precisely adjusted to accommodate frame materials of different sizes and specifications. On the other hand, during the handover stage, after the inner frame processing position 101 completes the processing of the frame blank 300, the second X-axis translation platform 21 drives the second clamp 40 to move the processed frame blank 300 to a preset handover position. At this position, the frame blank 300 is suspended outside the main body of the Z-axis rotary table 20, and a completely open, mechanically interference-free operating space is formed below and inside it, preparing for the third clamp 60 of the outer frame processing position 102 to receive it.

[0037] In some embodiments, such as Figure 4 , Figure 5 As shown, the multi-axis spatial motion mechanism 50 drives the third clamp 60 to move along a continuous arc trajectory into the inner frame of the frame blank 300, thereby tightening the inner contour of the frame blank 300. The continuous arc trajectory means that the multi-axis spatial motion mechanism 50 does not drive the third clamp 60 into the inner frame of the frame blank 300 in a perpendicular posture. Instead, it drives the third clamp 60 in an inclined posture, with the top side of the clamp, which is at a higher vertical position, entering the inner frame of the frame blank 300 first. Then, the multi-axis spatial motion mechanism 50 continues to drive the third clamp 60 along the continuous arc trajectory, gradually adjusting the posture of the third clamp 60 from an inclined state to a state parallel to the frame blank 300, until the third clamp 60 is completely inside the inner frame of the frame blank 300, tightening the inner contour of the frame blank 300 to fix it in place.

[0038] In specific implementation, such as Figure 2 , Figure 5As shown, the third clamp 60 includes at least two retractable clamping blocks 61. The clamping blocks 61 extend to abut against the inner contour of the inner frame and apply a preset clamping force, thereby enabling the third clamp 60 to tighten the frame blank 300. In specific implementation, the clamping blocks 61 can be driven by an internal pneumatic or hydraulic actuator. After receiving the frame blank 300, they extend outward to abut against and uniformly apply a clamping force to the inner contour of the frame blank 300 from the inside, thereby achieving a firm positioning.

[0039] In some embodiments, the multi-axis spatial motion mechanism 50 is further provided with an air nozzle (not shown in the figure), the opening of which faces the outer surface of the third fixture 60. In this way, the airflow supplied by the air nozzle can actively remove any tiny chips and dust residue that may have adhered to the third fixture 60 due to the previous machining cycle, preventing secondary contamination or scratches on the surface of the frame blank 300, and ensuring that the positioning reference surface of the third fixture 60 remains clean at all times, thereby providing a reliable guarantee for achieving continuous, stable, and high-precision clamping and machining.

[0040] The frame processing feeding structure and processing equipment provided in this application eliminates the need for a traditional Z-axis height adjustment mechanism by directly mounting the fixture of the inner frame processing position onto a shared precision planar motion mechanism. This simplifies the equipment, reduces costs, and fundamentally avoids workpiece deformation caused by non-coplanar clamping surfaces, ensuring long-term processing stability. Simultaneously, the multi-axis mechanism of the outer frame processing position receives the workpiece with a flexible trajectory, improving the success rate and reliability of process transitions, resulting in efficient and smooth overall equipment operation.

[0041] In the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0042] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A frame processing and feeding structure, comprising an inner frame processing position and an outer frame processing position, characterized in that, The inner frame processing position is provided with a first X-axis translation platform, a Z-axis rotary table and a first fixture are provided on the first X-axis translation platform, and a second fixture located on the same horizontal processing plane as the first fixture is provided on the Z-axis rotary table. The first fixture and the second fixture are used to jointly clamp a frame blank. The outer frame processing position is provided with a multi-axis spatial motion mechanism and a third fixture driven by the multi-axis spatial motion mechanism. The third fixture is used to fix the frame blank processed by the inner frame processing position.

2. The frame processing and feeding structure according to claim 1, characterized in that, The first X-axis translation platform includes a servo motor, a linear guide rail, and a base. The base is slidably mounted on the linear guide rail, and the output shaft of the servo motor is connected to the base for driving the base to move along the linear guide rail.

3. The frame processing and feeding structure according to claim 2, characterized in that, Telescopic covers are provided on both sides of the base in the direction of movement, and the servo motor and linear guide rail are housed within the telescopic covers.

4. The frame processing and feeding structure according to claim 3, characterized in that, The top surface of the telescopic cover is a slope.

5. The frame processing and feeding structure according to claim 1, characterized in that, Both the first clamp and the second clamp are pneumatic grippers.

6. The frame processing and feeding structure according to claim 1, characterized in that, A second X-axis translation platform is provided on the Z-axis rotary table, and the second fixture is mounted on the Z-axis rotary table via the second X-axis translation platform; wherein, after the inner frame processing position completes the processing of the frame blank, the second X-axis translation platform drives the second fixture to hold the frame blank at a preset junction position.

7. The frame processing and feeding structure according to claim 1 or 6, characterized in that, The multi-axis spatial motion mechanism drives the third clamp to move into the inner frame of the frame blank in a continuous arc trajectory to tighten the inner contour of the frame blank.

8. The frame processing and feeding structure according to claim 7, characterized in that, The third clamp includes at least two retractable clamping blocks that extend to abut against the inner contour of the inner frame and apply a preset clamping force, thereby enabling the third clamp to tighten the frame blank.

9. The frame processing and feeding structure according to claim 7, characterized in that, The multi-axis spatial motion mechanism is also equipped with an air nozzle, the opening of which faces the outer surface of the third clamp.

10. A frame processing device, characterized in that, The frame processing and feeding structure includes any one of claims 1-9.

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