Nozzle cutting apparatus for lens workpieces

Abstract

The utility model discloses a kind of water gap cutting equipment for lens workpiece, the water gap cutting equipment for lens workpiece includes: box, conveying mechanism, first cutting mechanism, second cutting mechanism and blanking mechanism;Box interior is provided with mounting plane;Conveying mechanism is set as rotating conveying mechanism, and conveying mechanism sequentially has feeding station, first cutting station, second cutting station and blanking station along rotating conveying direction;First cutting mechanism is set to the adjacent side of first cutting station;Second cutting mechanism is set to the adjacent side of second cutting station;Blanking mechanism is set to the adjacent side of blanking station.The water gap cutting equipment for lens workpiece realizes whole-course automation process from feeding, cutting to blanking by rotating conveying mechanism, positioning fixture rotates with conveying mechanism, sequentially passes through each station, completes a processing cycle, reduces manual intervention, reduces operating cost, and ensures the continuity of production process.

Description

Technical Field

[0001] This utility model relates to the field of sprue cutting equipment, and in particular to a sprue cutting equipment for lens workpieces. Background Technology

[0002] Lens components, especially those formed through injection molding, often have excess gate runner structures at their edges, known as "gates." These gates need to be precisely and smoothly removed during subsequent processing to meet the optical performance and assembly requirements of the lens. Currently, common methods for removing gates from such lens components include manual cutting and semi-automatic equipment cutting. Manual cutting relies on operators using specialized tools, which is not only inefficient and labor-intensive, but also makes it difficult to guarantee the quality and consistency of the cuts. Improper operation can easily lead to scratches, chipping, or gate residue on the lens, resulting in a low product yield.

[0003] To address the aforementioned issues, some semi-automatic or fully automatic cutting equipment has emerged in the existing technology. For example, some equipment uses linear or rotary conveyor mechanisms to sequentially deliver workpieces to the cutting station. However, these devices often suffer from one or more of the following drawbacks: Dispersed processes and low efficiency: Some equipment only has one cutting station. For lens workpieces requiring cutting of both sides of the sprue, operators or robots need to reposition and clamp the workpiece after cutting one side and then cut the other side. This secondary positioning not only increases the complexity of the equipment and the production cycle time but also directly affects the cutting accuracy and symmetry of the sprue due to accumulated positioning errors. Complex structure and large space occupation: To achieve double-sided cutting, some solutions use multiple independent devices connected in series or complex robot transfer systems, resulting in a long and cumbersome production line layout, a large footprint, and high difficulty and cost in coordinating and controlling the various devices. Insufficient positioning stability: During the cutting process, especially at moments of significant impact, the workpiece may experience slight displacement or vibration. If the positioning fixture is poorly designed and cannot reliably fix the workpiece at the moment of cutting, it will directly lead to uneven cutting surfaces or workpiece damage. In addition, during sprue shearing operations, the sprue is flexible and will splash everywhere, requiring timely cleaning after the operation is completed. Utility Model Content

[0004] Therefore, it is necessary to provide a sprue cutting device for lens workpieces to address the technical problem that existing sprue cutting processes for lens workpieces easily cause damage to the workpieces.

[0005] A sprue cutting device for lens workpieces includes a housing, a conveying mechanism, a first cutting mechanism, a second cutting mechanism, and a unloading mechanism. The housing has an internal mounting plane, and the top side of the mounting plane forms a working cavity. The conveying mechanism, the first cutting mechanism, the second cutting mechanism, and the unloading mechanism are all housed within the working cavity and mounted on the mounting plane. The conveying mechanism is a rotary conveying mechanism, and along the rotary conveying direction, it is sequentially provided with a loading station, a first cutting station, a second cutting station, and an unloading station. The first cutting mechanism is located adjacent to the first cutting station; the second cutting mechanism is located adjacent to the second cutting station; and the unloading mechanism is located adjacent to the unloading station.

[0006] The sprue cutting equipment for lens workpieces also includes positioning fixtures, which are respectively set on the surface of the conveying mechanism corresponding to the loading station, the first cutting station, the second cutting station and the unloading station. Along the radial direction of the rotation trajectory of the conveying mechanism, the cutting ends of the first cutting mechanism and the cutting ends of the second cutting mechanism are respectively matched with the inner and outer sides of each positioning fixture. Thus, when the workpiece is loaded on the positioning fixture and the sprues at both ends of the workpiece are exposed to the inner and outer sides of the positioning fixture, the first cutting mechanism and the second cutting mechanism can sequentially cut the sprues at both ends of the workpiece.

[0007] In one embodiment, the conveying mechanism includes a cam divider and a rotating pallet. The cam divider is mounted on a mounting plane, and the output end of the cam divider is oriented towards the top side. The geometric center of the rotating pallet is connected to the output end of the cam divider.

[0008] In one embodiment, the loading station, the first cutting station, the second cutting station, and the unloading station are distributed at equal angles along the edge of the top surface of the rotating pallet, with the geometric central axis of the rotating pallet as the axis.

[0009] In one embodiment, the first cutting mechanism, the second cutting mechanism, and the unloading mechanism are respectively located at the edge of the rotating pallet at preset workstations.

[0010] In one embodiment, the four positioning fixtures are distributed at the edges of the top surface of the rotating pallet at equal angles to the preset workstations.

[0011] In one embodiment, along the radial direction of the rotating pallet, the inner side of the rotating pallet corresponding to each positioning fixture is provided with clearance holes.

[0012] In one embodiment, the first cutting mechanism includes a first pressing component and a first cutting component. The first pressing component is disposed on the top side of the first cutting station and connected to the mounting plane, and the pressing end of the top of the first pressing component is correspondingly engaged with each positioning fixture. The first cutting component is disposed on the bottom side of the first cutting station and mounted on the mounting plane, and the cutting end of the first cutting component is correspondingly engaged with the outer edge of each positioning fixture relative to the rotation center.

[0013] In one embodiment, the first pressing assembly includes a first connecting seat, a first lifting unit, and a first pressing plate. The bottom end of the first connecting seat is connected to the mounting plane, and the top end of the first connecting seat extends to the top side of the first cutting station. The first lifting unit is installed on the top end of the first connecting seat, and the output end of the first lifting unit is set towards the first cutting station. The first pressing plate is installed on the output end of the first lifting unit.

[0014] In one embodiment, the first cutting assembly includes a first mounting bracket, a first fine-tuning slide, a first mounting plate, and a first pneumatic shear; the first mounting bracket is mounted on the bottom side of the first cutting station; the first fine-tuning slide is mounted on the first mounting bracket, and the movable end of the first fine-tuning slide is positioned facing the top side; the first mounting plate is connected to the top surface of the movable end of the first fine-tuning slide; the first pneumatic shear is mounted on the first mounting plate, and the cutting end of the first pneumatic shear is positioned facing the edge corresponding to the first cutting station.

[0015] In one embodiment, the first cutting assembly further includes a first collecting hopper and a first storage tray; the first collecting hopper is mounted on a first mounting plate, and the inlet end of the first collecting hopper is located adjacent to the cutting end of the first pneumatic scissors, and the outlet end of the first collecting hopper is located facing the bottom; the first storage tray is located on the bottom side of the outlet end of the first collecting hopper.

[0016] In one embodiment, the aforementioned first fine-tuning slide is provided as two, and is respectively disposed at both ends of the bottom side of the first mounting plate.

[0017] In one embodiment, each of the above positioning fixtures is provided with four mounting slots, which are arranged along the length of the positioning fixture on the top side surface of the positioning fixture.

[0018] In one embodiment, the first cutting component is provided with four first pneumatic scissors, each of which is installed on the first mounting plate in a corresponding slot.

[0019] In one embodiment, similar to the first cutting mechanism corresponding to the first cutting station, the second cutting mechanism corresponding to the second cutting station includes a second pressing component and a second cutting component. The second pressing component has the same structure as the first pressing component and is arranged in the same way on the adjacent side of the second cutting station. The second cutting component has the same structure as the first cutting component and is arranged in the same way but in the opposite direction on the bottom side of the second cutting station.

[0020] In one embodiment, the second cutting assembly includes four second pneumatic shears. The four second pneumatic shears are arranged in the same manner as the four first pneumatic shears and are positioned in opposite directions on the bottom side of the second cutting station. The cutting end of each second pneumatic shear can be fitted into the clearance hole on the inner side of the corresponding positioning fixture to cut the sprue at the inner end of the corresponding workpiece relative to the center of rotation.

[0021] In one embodiment, the aforementioned unloading mechanism includes a third connecting seat, a horizontal linear guide rail, a lifting guide rail, and a suction assembly. The third connecting seat is correspondingly disposed on the adjacent side of the unloading station and connected to the mounting plane. The horizontal linear guide rail's parallel rotating support plate is mounted on the top of the third connecting seat. The lifting guide rail's vertical rotating support plate is mounted on the drive end of the horizontal linear guide rail. The suction assembly is mounted on the drive end of the lifting guide rail. Thus, the horizontal linear guide rail, in conjunction with the lifting guide rail, can drive the suction assembly to suction and unload the workpiece that has been conveyed to the unloading station and completed the sprue cutting.

[0022] The material suction assembly includes four suction cup units to perform material suction on four workpieces in the corresponding positioning fixture.

[0023] The aforementioned sprue cutting equipment for lens workpieces achieves a fully automated process from loading, cutting to unloading through a rotary conveyor mechanism. The positioning fixture rotates with the conveyor mechanism, passing through each station sequentially to complete one processing cycle, reducing manual intervention, lowering operating costs, and ensuring the continuity of the production process. The rotary conveyor mechanism and multi-station design allow workpieces to be processed at different stages simultaneously during flow. Two cutting mechanisms are responsible for cutting the sprues on both sides of the workpiece, avoiding repeated positioning or waiting time, thereby shortening the processing cycle of a single workpiece and increasing overall output. At the same time, it effectively avoids scratching the lens workpiece and personnel during manual clamping and handling. The step-by-step cutting design (the first cutting mechanism handles one side of the sprue, and the second cutting mechanism handles the other side) simplifies the function of each cutting mechanism, reduces the complexity of a single mechanism, and may improve equipment reliability and maintainability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a sprue cutting device for lens workpieces in one embodiment; Figure 2This is a partial structural schematic diagram of a sprue cutting device for lens workpieces in one embodiment; Figure 3 This is a partially exploded structural diagram of a sprue cutting device for lens workpieces in one embodiment; Figure 4 This is a partial structural schematic diagram of a sprue cutting device for lens workpieces in one embodiment; Figure 5 This is a partial structural schematic diagram of a sprue cutting device for lens workpieces in one embodiment; Figure 6 This is a partial structural schematic diagram of a sprue cutting device for lens workpieces in one embodiment. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Please see Figures 1 to 6This utility model discloses a sprue cutting device 1 for lens workpieces. The sprue cutting device 1 for lens workpieces includes a housing 10, a conveying mechanism 20, a first cutting mechanism 30, a second cutting mechanism 40, and a feeding mechanism 50. The housing 10 has an installation plane 11 inside, and the top side of the installation plane 11 is set as a working cavity. The conveying mechanism 20, the first cutting mechanism 30, the second cutting mechanism 40, and the feeding mechanism 50 are all housed in the working cavity and installed on the installation plane 11. The conveying mechanism 20 is a rotary conveying mechanism 20, and the conveying mechanism 20 is sequentially provided with a loading station a and a first cutting station a along the rotary conveying direction. The cutting equipment comprises a cutting station b, a second cutting station c, and a blanking station d. Based on this, a first cutting mechanism 30 is located adjacent to the first cutting station b; a second cutting mechanism 40 is located adjacent to the second cutting station c; and a blanking mechanism 50 is located adjacent to the blanking station d. Thus, after the workpiece is loaded at the loading station a, the conveying mechanism 20 drives the workpiece to the first cutting station b, where the first cutting mechanism 30 cuts the sprue on one side of the workpiece. Then, the workpiece is conveyed to the second cutting station c, where the second cutting mechanism 40 cuts the sprue on the other side. Finally, the workpiece is conveyed to the blanking station d and blanking mechanism 50 completes the blanking process. Specifically, the sprue cutting equipment 1 for lens workpieces also includes positioning fixtures 60. The positioning fixtures 60 are respectively set on the surface of the conveying mechanism 20 corresponding to the loading station a, the first cutting station b, the second cutting station c, and the unloading station d. Each positioning fixture 60 receives the material at the loading station a, and then, during the rotation of the conveying mechanism 20, the loaded workpiece sequentially passes through the first cutting station b, the second cutting station c, and the unloading station d to complete one processing cycle. Based on this, along the radial direction of the rotation trajectory of the conveying mechanism 20, the cutting ends of the first cutting mechanism 30 and the second cutting mechanism 40 respectively cooperate with the inner and outer sides of each positioning fixture 60. Thus, when the workpiece is loaded on the positioning fixture 60 and the sprues at both ends of the workpiece are exposed to the inner and outer sides of the positioning fixture 60, the first cutting mechanism 30 and the second cutting mechanism 40 can sequentially cut the sprues at both ends of the workpiece.Based on the above configuration, the sprue cutting equipment 1 for lens workpieces in this solution achieves a fully automated process from loading, cutting to unloading through the rotary conveyor mechanism 20. The positioning fixture 60 rotates with the conveyor mechanism 20, passing through each station in sequence to complete one processing cycle, reducing manual intervention, lowering operating costs, and ensuring the continuity of the production process. The rotary conveyor mechanism 20 and multi-station design allow the workpiece to be processed at different stages simultaneously during flow. The two cutting mechanisms are responsible for cutting the sprues on both sides of the workpiece, avoiding repeated positioning or waiting time, thereby shortening the processing cycle of a single workpiece and increasing the overall output. The step-by-step cutting design (the first cutting mechanism 30 processes one side of the sprue, and the second cutting mechanism 40 processes the other side) simplifies the function of each cutting mechanism, reduces the complexity of a single mechanism, and may improve the reliability and maintainability of the equipment.

[0032] Furthermore, the conveying mechanism 20 includes a cam divider 21 and a rotating pallet 22. The cam divider 21 is mounted on the mounting plane 11, and the output end of the cam divider 21 is arranged facing the top side. The geometric center of the rotating pallet 22 is connected to the output end of the cam divider 21, so that the cam divider 21 can drive the rotating pallet 22 to perform intermittent rotational motion at a preset division angle.

[0033] Specifically, the loading station a, the first cutting station b, the second cutting station c, and the unloading station d are distributed at equal angles to the edge of the top surface of the rotating pallet 22 with the geometric central axis of the rotating pallet 22 as the axis; correspondingly, the first cutting mechanism 30, the second cutting mechanism 40, and the unloading mechanism 50 are respectively set at the edge of the rotating pallet 22 with the preset station.

[0034] Specifically, in one embodiment, four positioning fixtures 60 are distributed at the edges of the top side surface of the rotating pallet 22 at equal angles corresponding to preset work positions.

[0035] Furthermore, along the radial direction of the rotating pallet 22, the rotating pallet 22 is provided with a clearance hole e on the inner side of each positioning fixture 60. Thus, when the cutting end of the second cutting mechanism 40 cuts the sprue at the inner end of the workpiece loaded in the positioning fixture, the clearance hole e can avoid the cutting end of the second cutting mechanism 40 to prevent interference.

[0036] Furthermore, the first cutting mechanism 30 includes a first pressing assembly 31 and a first cutting assembly 32. The first pressing assembly 31 is correspondingly disposed on the top side of the first cutting station b and connected to the mounting plane 11, and the pressing end of the top of the first pressing assembly 31 cooperates with each positioning fixture 60. The first cutting assembly 32 is correspondingly disposed on the bottom side of the first cutting station b and mounted on the mounting plane 11, and the cutting end of the first cutting assembly 32 cooperates with the outer edge of each positioning fixture 60 relative to the rotation center. Thus, when the positioning fixture 60 loaded with the workpiece rotates to the first cutting station b, the pressing end of the first pressing assembly 31 presses down and cooperates with the positioning fixture 60 to further clamp the workpiece; at this time, the cutting end of the first cutting assembly 32 cuts the outer end of the workpiece relative to the rotation center.

[0037] Specifically, in one embodiment, the first pressing assembly 31 includes a first connecting seat 311, a first lifting unit 312, and a first pressing plate 313. The bottom end of the first connecting seat 311 is connected to the mounting plane 11, and the top end of the first connecting seat 311 extends to the top side of the first cutting station b. The first lifting unit 312 is installed on the top end of the first connecting seat 311, and the output end of the first lifting unit 312 faces the first cutting station b. The first pressing plate 313 is installed on the output end of the first lifting unit 312. When the positioning fixture 60 rotates to the first cutting station b, the first step is for the lifting unit to drive the first pressing plate 313 to press down and cooperate with the positioning fixture 60.

[0038] Specifically, in one embodiment, the first cutting assembly 32 includes a first mounting bracket 321, a first fine-tuning slide 322, a first mounting plate 323, and a first pneumatic shear 324. The first mounting bracket 321 is mounted on the bottom side of the first cutting station b. The first fine-tuning slide 322 is mounted on the first mounting bracket 321, and the movable end of the first fine-tuning slide 322 is positioned towards the top side. The first mounting plate 323 is connected to the top surface of the movable end of the first fine-tuning slide 322. The first pneumatic shear 324 is mounted on the first mounting plate 323, and the cutting end of the first pneumatic shear 324 is positioned towards the edge corresponding to the first cutting station b. When the positioning fixture 60 carrying the workpiece rotates to the first cutting station b, the first fine-tuning slide 322 fine-tunes the relative position of the first pneumatic shear 324 based on the sprue cutting point at the outer end of the workpiece. Subsequently, the first pneumatic shear 324 cuts the sprue at the preset sprue cutting point at the outer end of the workpiece, thereby completing the cutting process of the sprue at the outer end of the workpiece.

[0039] Specifically, in another embodiment, the first cutting assembly 32 further includes a first collecting hopper 325 and a first storage tray 326; the first collecting hopper 325 is installed on the first mounting plate 323, and the inlet end of the first collecting hopper 325 is located adjacent to the cutting end of the first pneumatic shear 324 for collecting sprue waste generated during the cutting process, while the outlet end of the first collecting hopper 325 is located facing the bottom; the first storage tray 326 is located on the bottom side of the outlet end of the first collecting hopper 325 for temporary storage of sprue waste.

[0040] More specifically, in order to further enhance the support stability of the first fine-tuning slide 322 on the first mounting plate 323, two first fine-tuning slides 322 are provided, and are respectively set at both ends of the bottom side of the first mounting plate 323.

[0041] Furthermore, in one embodiment, each positioning fixture 60 is provided with four mounting slots f, which are arranged along the length of the positioning fixture 60 on the top side surface of the positioning fixture 60, so that each positioning fixture 60 can clamp four workpieces for positioning and conveying; correspondingly, the first cutting component 32 is provided with four first pneumatic scissors 324, which are respectively installed on the first mounting plate 323 corresponding to the four mounting slots f.

[0042] Furthermore, similar to the first cutting mechanism 30 corresponding to the first cutting station b, the second cutting mechanism 40 corresponding to the second cutting station c includes a second pressing assembly 41 and a second cutting assembly 42. The second pressing assembly 41 has the same structure as the first pressing assembly 31 and is arranged in the same way on the adjacent side of the second cutting station c. The second cutting assembly 42 has the same structure as the first cutting assembly 32 and is arranged in the same way but in opposite directions on the bottom side of the second cutting station c. Specifically, the second cutting assembly 42 includes four second pneumatic shears 424. The four second pneumatic shears 424 are arranged in the same way as the four first pneumatic shears 324, in opposite directions, on the bottom side of the second cutting station c. Thus, the cutting end of each second pneumatic shear 424 can fit into the clearance hole e on the inner side of the corresponding positioning fixture 60 to cut the sprue at the inner end of the workpiece relative to the center of rotation.

[0043] Furthermore, the unloading mechanism 50 includes a third connecting seat 51, a horizontal linear guide rail 52, a lifting guide rail 53, and a suction assembly 54. The third connecting seat 51 is correspondingly disposed on the adjacent side of the unloading station d and connected to the mounting plane 11. The horizontal linear guide rail 52 is mounted on the top of the third connecting seat 51 with a parallel rotating pallet 22. The lifting guide rail 53 is mounted on the drive end of the horizontal linear guide rail 52 with a vertical rotating pallet 22. The suction assembly 54 is mounted on the drive end of the lifting guide rail 53. Thus, the horizontal linear guide rail 52, in conjunction with the lifting guide rail 53, can drive the suction assembly 54 to suction and unload the workpiece that has been conveyed to the unloading station d and completed the sprue cutting.

[0044] Specifically, in one embodiment, the suction assembly 54 includes four suction cup units 541 to perform suction operations on four workpieces in the corresponding positioning fixture 60.

[0045] In summary, the sprue cutting equipment for lens workpieces disclosed in this utility model achieves a fully automated process from loading, cutting to unloading through a rotary conveyor mechanism. The positioning fixture rotates with the conveyor mechanism, passing through each station sequentially to complete one processing cycle, reducing manual intervention, lowering operating costs, and ensuring the continuity of the production process. The rotary conveyor mechanism and multi-station design allow the workpiece to be processed at different stages simultaneously during flow. The two cutting mechanisms are responsible for cutting the sprues on both sides of the workpiece, avoiding repeated positioning or waiting time, thereby shortening the processing cycle of a single workpiece and increasing overall output. At the same time, it effectively avoids scratching the lens workpiece and personnel during manual clamping and handling. The step-by-step cutting design (the first cutting mechanism handles one side of the sprue, and the second cutting mechanism handles the other side) simplifies the function of each cutting mechanism, reduces the complexity of a single mechanism, and may improve the reliability and maintainability of the equipment.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A sprue cutting device for lens workpieces, characterized in that, include: The system comprises a housing, a conveying mechanism, a first cutting mechanism, a second cutting mechanism, and a feeding mechanism. The housing has an internal mounting plane, with a working cavity on the top side of the mounting plane. The conveying mechanism, the first cutting mechanism, the second cutting mechanism, and the feeding mechanism are all housed within the working cavity and mounted on the mounting plane. The conveying mechanism is a rotary conveying mechanism, and along the rotary conveying direction, it is sequentially equipped with a loading station, a first cutting station, a second cutting station, and a feeding station. The first cutting mechanism is located adjacent to the first cutting station; the second cutting mechanism is located adjacent to the second cutting station; and the feeding mechanism is located adjacent to the feeding station. The sprue cutting equipment for lens workpieces also includes positioning fixtures, which are respectively set on the surface of the conveying mechanism corresponding to the loading station, the first cutting station, the second cutting station and the unloading station. Along the radial direction of the rotation trajectory of the conveying mechanism, the cutting ends of the first cutting mechanism and the cutting ends of the second cutting mechanism are respectively matched with the inner and outer sides of each positioning fixture. Thus, when the workpiece is loaded on the positioning fixture and the sprues at both ends of the workpiece are exposed to the inner and outer sides of the positioning fixture, the first cutting mechanism and the second cutting mechanism can sequentially cut the sprues at both ends of the workpiece.

2. The sprue cutting equipment for lens workpieces according to claim 1, characterized in that, The conveying mechanism includes a cam divider and a rotating pallet. The cam divider is mounted on the mounting plane, and its output end faces the top side. The geometric center of the rotating pallet is connected to the output end of the cam divider.

3. The sprue cutting equipment for lens workpieces according to claim 2, characterized in that, The loading station, the first cutting station, the second cutting station, and the unloading station are distributed at equal angles along the edge of the top surface of the rotating pallet, with the geometric central axis of the rotating pallet as the axis.

4. The sprue cutting equipment for lens workpieces according to claim 3, characterized in that, Along the radial direction of the rotating tray, the inner side of the rotating tray corresponding to each positioning fixture is provided with clearance holes.

5. The sprue cutting equipment for lens workpieces according to claim 4, characterized in that, The first cutting mechanism includes a first pressing component and a first cutting component. The first pressing component is correspondingly disposed on the top side of the first cutting station and connected to the mounting plane, and the pressing end of the top of the first pressing component is correspondingly engaged with each positioning fixture. The first cutting component is correspondingly disposed on the bottom side of the first cutting station and mounted on the mounting plane, and the cutting end of the first cutting component is correspondingly engaged with the outer edge of each positioning fixture relative to the rotation center.

6. The sprue cutting equipment for lens workpieces according to claim 5, characterized in that, The first pressing assembly includes a first connecting seat, a first lifting unit, and a first pressing plate. The bottom end of the first connecting seat is connected to the mounting plane, and the top end of the first connecting seat extends to the top side of the first cutting station. The first lifting unit is installed on the top end of the first connecting seat, and the output end of the first lifting unit is set towards the first cutting station. The first pressing plate is installed on the output end of the first lifting unit.

7. The sprue cutting equipment for lens workpieces according to claim 6, characterized in that, The first cutting assembly includes a first mounting frame, a first fine-tuning slide, a first mounting plate, and a first pneumatic shear; the first mounting frame is mounted on the bottom side of the first cutting station; the first fine-tuning slide is mounted on the first mounting frame, and the movable end of the first fine-tuning slide is positioned facing the top side; the first mounting plate is connected to the top side surface of the movable end of the first fine-tuning slide; the first pneumatic shear is mounted on the first mounting plate, and the cutting end of the first pneumatic shear is positioned facing the edge corresponding to the first cutting station.

8. The sprue cutting equipment for lens workpieces according to claim 7, characterized in that, Each positioning fixture is provided with four mounting slots, which are arranged along the length of the positioning fixture on the top side surface of the positioning fixture.

9. The sprue cutting equipment for lens workpieces according to claim 8, characterized in that, The first cutting component is equipped with four first pneumatic scissors, each of which is installed on the first mounting plate in a corresponding slot.

10. The sprue cutting equipment for lens workpieces according to claim 9, characterized in that, Similar to the first cutting mechanism corresponding to the first cutting station, the second cutting mechanism corresponding to the second cutting station includes a second pressing component and a second cutting component. The second pressing component has the same structure as the first pressing component and is arranged in the same way on the adjacent side of the second cutting station. The second cutting component has the same structure as the first cutting component and is arranged in the same way but in the opposite direction on the bottom side of the second cutting station.

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