Resin lens cutting system based on real-time sensing of radian of curved surface

Abstract

The invention relates to the technical field of resin lens cutting, in particular to a resin lens cutting system based on real-time curved surface radian perception, which comprises a bottom plate, a vertical plate is fixedly connected to the top of the bottom plate, a mold is arranged on the side surface of the vertical plate, a machining table is arranged at the top of the bottom plate, and a workpiece body is placed at the top of the machining table; a hydraulic attaching assembly is arranged between the workpiece body and the mold and comprises a rectangular block, cylinders are fixedly connected to the two sides of the rectangular block, and a first piston plate is slidably connected into the cylinder on the right side. Complexity of PLC programming and high use cost are omitted through a mechanical structure, a mold with the corresponding curved surface radian is correspondingly machined in advance, then real-time sensing of the radian is achieved through the hydraulic attaching assembly, then the corresponding laser head moves in real time for cutting, the machining precision is high, and the equipment cost is low.

Description

Technical Field

[0001] This invention relates to the field of resin lens cutting technology, specifically a resin lens cutting system based on real-time sensing of surface curvature. Background Technology

[0002] Resin lenses, as a type of material with good light transmission, are widely used in automobile production. For example, common car headlight lenses are made of resin lenses. Currently, resin lenses commonly found on the market are often processed into conventional shapes during manufacturing.

[0003] However, PLC programming is difficult and costly when dealing with workpieces with complex curvature and a small number of parts. To address this, we propose a resin lens cutting system based on real-time curvature sensing to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a resin lens cutting system based on real-time sensing of surface curvature, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a resin lens cutting system based on real-time sensing of curved surface curvature, comprising a base plate, a vertical plate fixedly connected to the top of the base plate, a mold mounted on the side of the vertical plate, a processing table set on the top of the base plate, a workpiece body placed on the top of the processing table, and a hydraulic bonding assembly between the workpiece body and the mold, comprising a rectangular block, cylinders fixedly connected to both sides of the rectangular block, a first piston plate slidably connected inside the right cylinder, a first piston rod fixedly connected to the right side of the first piston plate, the right end of the first piston rod extending to the outside of the cylinder and fixedly connected to a connecting block, a laser head mounted on the connecting block, a second piston plate slidably connected inside the left cylinder, a second piston rod fixedly connected to the left side of the second piston plate, the left end of the second piston rod extending to the outside of the cylinder and fixedly connected to an arc-shaped contact block, the arc-shaped contact block contacting the mold; The rectangular block forms a first oil chamber and a second oil chamber with the first piston plate and the second piston plate, respectively. The first oil chamber and the second oil chamber are connected by a through hole opened inside the rectangular block. A feed adjustment component is provided in the through hole to adjust the lateral position of the first piston plate. A spring is fixedly connected between the second piston plate and the cylinder. The spring is movably sleeved on the outside of the second piston rod. When the spring is in a stretched state, it provides a leftward pressing force to the arc-shaped contact block.

[0006] More preferably, the feed rate adjustment component includes a circular tube, the outer wall of which is slidably connected to the inner wall of the through hole, the right end of which extends to the outside of the through hole and is fixedly connected to an annular side plate, the outer wall of which is slidably connected to the inner wall of the cylinder.

[0007] More preferably, a sleeve is rotatably embedded inside the rectangular block, and a threaded groove is opened inside the sleeve and a first screw is threadedly connected thereto. The right end of the first screw is fixedly connected to the annular side plate. A positioning rod is slidably embedded inside the rectangular block, and the right end of the positioning rod is fixedly connected to the annular side plate.

[0008] More preferably, the rectangular block has a cavity inside, and a round rod is rotatably connected between the inner walls of the front and rear sides of the cavity. A worm gear is provided on the outer side of the round rod. The left end of the sleeve is located in the cavity, and a worm wheel is fixedly connected to its outer side. The worm gear meshes with the worm wheel. The front end of the round rod extends to the outside of the rectangular block and is fixedly connected to a knob.

[0009] More preferably, the bottom of the rectangular block is provided with a cutting and walking assembly, which includes two lifting platforms set on the base plate, a U-shaped plate fixedly connected to the top of the lifting platform, a second screw rotatably connected between the U-shaped plates, and a protrusion fixedly connected to the bottom of the rectangular block, the protrusion being threadedly connected to the second screw.

[0010] More preferably, a motor is fixedly connected to the side of the U-shaped plate, the output shaft end of the motor is fixedly connected to the second screw, and two crossbars are fixedly connected between the U-shaped plates, with the protrusions slidably connected to the crossbars.

[0011] More preferably, the front and rear sides of the processing table are provided with clamping and positioning components, which include two support plates. Two cylinders are fixedly connected to the outer side wall of the support plates, and the movable end of the cylinder extends into the support plate and is fixedly connected to a clamping block.

[0012] More preferably, a U-shaped frame is fixedly connected to the top of the base plate, and a laser device is installed on the top of the U-shaped frame. The laser device and the laser head are connected by a connecting wire.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a cutting and walking component to move a rectangular block backward, and an arc-shaped contact block moves backward on the arc surface of the mold. Under the action of a spring, the second piston plate and the second piston rod generate a leftward clamping force, causing the arc-shaped contact block to move continuously to the left in the first half of the movement and fit against the arc surface of the mold. The leftward movement of the second piston plate increases the volume of the second oil chamber, while the volume of the first oil chamber on the right side decreases accordingly. Thus, under the action of hydraulic oil, the first piston plate is driven to move to the left, and the laser head moves to the left accordingly. Similarly, the arc-shaped contact block moves continuously to the right in the second half of the movement. The thrust generated by the pressure drives the second piston plate to move to the right, and the first piston plate also moves to the right. This ensures that the movement trajectory of the laser head is always consistent with the mold. Thus, under the action of the laser equipment, a resin lens with a curvature corresponding to the arc surface of the mold can be cut by the laser head. The fit is high, and the position of the laser head can be adjusted while cutting. 2. In this invention, rotating a knob drives a round rod to rotate, which in turn drives a worm gear meshing with it to rotate. The worm gear drives the sleeve to rotate, and the first screw inside the sleeve unscrews out, causing the annular side plate and the round tube to move to the right. When the volume of the second oil chamber on the left side remains unchanged, the thrust generated by the movement of the annular side plate to the right pushes the hydraulic oil and the first piston plate to move to the right, thereby enabling unidirectional adjustment of the lateral position of the laser head, thereby adjusting the cutting feed. 3. This invention eliminates the complexity and high cost of PLC programming through mechanical structure. It uses a pre-processed mold with a corresponding curved surface curvature, and then uses a hydraulic bonding component to realize real-time sensing of the curvature. The corresponding laser head moves and cuts in real time, resulting in high processing accuracy and low equipment cost. Attached Figure Description

[0014] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention; Figure 2 This is a right-view stereoscopic structural diagram of the present invention; Figure 3 This is a schematic diagram of the internal cross-sectional planar structure of the hydraulic bonding component of the present invention; Figure 4 This is a three-dimensional structural diagram of the connection between the rectangular block and the feed rate adjustment component of the present invention; Figure 5 This is a schematic diagram showing the position of the laser head when the hydraulic bonding component of the present invention is in different positions on the mold; Figure 6 This is a schematic diagram showing the position of the second piston plate when the annular side plate of the present invention is pushed out to the right; Figure 7 This is a schematic diagram showing the position of the second piston plate when the annular side plate of the present invention is reset; Figure 8 for Figure 1 Enlarged 3D structural diagram of area A in the middle; Figure 9 for Figure 1 Enlarged 3D structural diagram of area B; Figure 10 for Figure 3 Enlarged 3D structural diagram of area C; Figure 11 for Figure 3 A magnified three-dimensional structural diagram of the central D area.

[0015] In the picture: 1. Base plate; 10. Vertical plate; 11. Mold; 12. Machining table; 13. Workpiece body; 2. Hydraulic bonding assembly; 20. Rectangular block; 21. Through hole; 22. Cylinder; 23. First piston plate; 24. First piston rod; 240. Connecting block; 241. Laser head; 25. First oil chamber; 26. Second piston plate; 27. Second piston rod; 270. Arc-shaped contact block; 28. Second oil chamber; 29. ​​Spring; 3. Feed rate adjustment assembly; 30. Round tube; 31. Annular side plate; 32. Sleeve; 33. First screw; 34. Cavity; 35. Round rod; 36. Worm gear; 37. Worm wheel; 38. Positioning rod; 39. Knob; 4. Cutting walking assembly; 40. Protrusion; 41. Lifting platform; 42. U-shaped plate; 43. Second screw; 44. Motor; 45. Crossbar; 5. Clamping and positioning assembly; 50. Support plate; 51. Cylinder; 52. Clamping block; 6. U-shaped frame; 60. Laser equipment; 61. Connecting wires. Detailed Implementation

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0017] Please see Figure 1-11This invention provides a technical solution: a resin lens cutting system based on real-time sensing of curved surface curvature, comprising a base plate 1, a vertical plate 10 fixedly connected to the top of the base plate 1, a mold 11 mounted on the side of the vertical plate 10, a processing table 12 set on the top of the base plate 1, a workpiece body 13 placed on the top of the processing table 12, and a hydraulic bonding component 2 between the workpiece body 13 and the mold 11, which includes a rectangular block 20, with cylinders 22 fixedly connected to both sides of the rectangular block 20, and a sliding connection inside the right cylinder 22. A first piston plate 23 is fixedly connected to the right side of the first piston plate 23. The right end of the first piston rod 24 extends to the outside of the cylinder 22 and is fixedly connected to a connecting block 240. A laser head 241 is mounted on the connecting block 240. A second piston plate 26 is slidably connected inside the left side of the cylinder 22. A second piston rod 27 is fixedly connected to the left side of the second piston plate 26. The left end of the second piston rod 27 extends to the outside of the cylinder 22 and is fixedly connected to an arc-shaped contact block 270. The arc-shaped contact block 270 is in contact with the mold 11. A first oil chamber 25 and a second oil chamber 28 are formed between the rectangular block 20, the first piston plate 23, and the second piston plate 26, respectively. The first oil chamber 25 and the second oil chamber 28 are connected through a through hole 21 opened inside the rectangular block 20. A feed adjustment component 3 is provided in the through hole 21 to adjust the lateral position of the first piston plate 23. The first oil chamber 25, the second oil chamber 28 and the through hole 21 are filled with hydraulic oil. With a certain amount of hydraulic oil, the pressure in the left first oil chamber 25 decreases, and the hydraulic oil flows through the through hole 21 to the right second oil chamber 28, thereby driving the first piston plate 23 to move laterally. A spring 29 is fixedly connected between the second piston plate 26 and the cylinder 22. The spring 29 is movably sleeved on the outside of the second piston rod 27. When the spring 29 is in a stretched state, it provides a leftward pressing force to the arc-shaped contact block 270.

[0018] In this embodiment, specifically: the feed rate adjustment component 3 includes a circular tube 30, the outer wall of the circular tube 30 is slidably connected to the inner wall of the through hole 21, the right end of the circular tube 30 extends to the outside of the through hole 21 and is fixedly connected to an annular side plate 31, and the outer wall of the annular side plate 31 is slidably connected to the inner wall of the cylinder 22. While the circular tube 30 slides with the through hole 21, it achieves a seal through the sealing ring. At the same time, the left end of the circular tube 30 is set as a slope to reduce the resistance of hydraulic oil passage. In this embodiment, specifically: a sleeve 32 is rotatably embedded inside the rectangular block 20, a threaded groove is opened inside the sleeve 32 and a first screw 33 is threadedly connected thereto, the right end of the first screw 33 is fixedly connected to the annular side plate 31, and a positioning rod 38 is slidably embedded inside the rectangular block 20, the right end of the positioning rod 38 is fixedly connected to the annular side plate 31. In this embodiment, specifically: a cavity 34 is provided inside the rectangular block 20, and a round rod 35 is rotatably connected between the inner walls of the front and rear sides of the cavity 34. A worm gear 36 is provided on the outer side of the round rod 35. The left end of the sleeve 32 is located inside the cavity 34, and a worm wheel 37 is fixedly connected to its outer side. The worm gear 36 meshes with the worm wheel 37. The front end of the round rod 35 extends to the outside of the rectangular block 20 and is fixedly connected to a knob 39. It should be noted that a vent is provided between the cavity 34 and the outside, and the cavity is connected to the outside air pressure through the vent. When the sleeve 32 and the rectangular block 20 rotate, there is a narrow gap to prevent negative pressure from forming after the annular side plate 31 moves to the right.

[0019] In this embodiment, specifically: a cutting and walking assembly 4 is provided at the bottom of the rectangular block 20, which includes two lifting platforms 41 set on the base plate 1. A U-shaped plate 42 is fixedly connected to the top of the lifting platform 41. An electric push rod is provided inside the lifting platform 41. The U-shaped plate 42 is driven to rise and fall by the electric push rods on both sides. A second screw 43 is rotatably connected between the inner walls of the front and rear sides of the U-shaped plate 42. A protrusion 40 is fixedly connected to the bottom of the rectangular block 20. The protrusion 40 is threadedly connected to the second screw 43. In this embodiment, specifically: a motor 44 is fixedly connected to the side of the U-shaped plate 42, the output shaft end of the motor 44 is fixedly connected to the second screw 43, two crossbars 45 are fixedly connected between the U-shaped plates 42, and the protrusion 40 is slidably connected to the crossbars 45; In this embodiment, specifically: the front and rear sides of the processing table 12 are provided with clamping and positioning components 5, which include two support plates 50. Two cylinders 51 are fixedly connected to the outer side wall of the support plate 50. The movable end of the cylinder 51 extends into the support plate 50 and is fixedly connected with a clamping block 52. In this embodiment, specifically: a U-shaped frame 6 is fixedly connected to the top of the base plate 1, and a laser device 60 is provided on the top of the U-shaped frame 6. The laser device 60 is connected to the laser head 241 through a connecting wire 61. The laser device 60 is a CO2 laser cutting device with a wavelength of 9.3µm. When the CO2 laser cuts the resin lens, the cutting edge can directly reach a smooth state without secondary polishing. The specific model is Coherent Cx-10.

[0020] In use, the corresponding mold 11 is first installed on the vertical plate 10. After the workpiece body 13 is calibrated and reset by the clamping and positioning component 5, the arc-shaped contact block 270 on the left side of the rectangular block 20 contacts the front end of the mold 11, and the laser head 241 on the right side of the rectangular block 20 is positioned above the workpiece body 13. The rectangular block 20 is moved backward by the cutting and walking component 4, and the arc-shaped contact block 270 moves backward on the arc surface of the mold 11. Under the action of the spring 29, the second piston plate 26 and the second piston rod 27 generate a leftward clamping force, so that the arc-shaped contact block 270 continues to move to the left and contacts the arc surface of the mold 11 during the first half of the movement. When the two piston plates are in contact, the second piston plate 26 moves to the left, which increases the volume of the second oil chamber 28 and reduces the volume of the first oil chamber 25 on the right side. As a result, the first piston plate 23 moves to the left under the action of hydraulic oil, and the laser head 241 moves to the left accordingly. Similarly, the arc-shaped contact block 270 moves to the right continuously in the second half of the movement. The thrust generated by the pressure drives the second piston plate 26 to move to the right, and the first piston plate 23 also moves to the right. This ensures that the movement trajectory of the laser head 241 is always consistent with that of the mold 11. Thus, under the action of the laser equipment 60, the laser head 241 can cut out a resin lens with an arc shape corresponding to the mold 11. Rotating the knob 39 drives the round rod 35 to rotate. The round rod 35 drives the worm wheel 37, which meshes with it, to rotate through the worm gear 36. The worm wheel 37 drives the sleeve 32 to rotate. The first screw 33 inside the sleeve 32 is screwed out and drives the annular side plate 31 and the round tube 30 to move to the right. When the volume of the second oil chamber 28 on the left side remains unchanged, the thrust generated by the movement of the annular side plate 31 to the right pushes the hydraulic oil and the first piston plate 23 to move to the right. This allows for unidirectional adjustment of the lateral position of the laser head 241, thereby adjusting the cutting feed.

[0021] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A resin lens cutting system based on real-time sensing of curved surface curvature, comprising a base plate (1), characterized in that: A vertical plate (10) is fixedly connected to the top of the base plate (1). A mold (11) is mounted on the side of the vertical plate (10). A processing table (12) is set on the top of the base plate (1). A workpiece body (13) is placed on the top of the processing table (12). A hydraulic bonding assembly (2) is set between the workpiece body (13) and the mold (11). The assembly includes a rectangular block (20). A cylinder (22) is fixedly connected to both sides of the rectangular block (20). A first piston plate (23) is slidably connected inside the right cylinder (22). The right side of the first piston plate (23) is connected to the cylinder (22). A first piston rod (24) is fixedly connected to the side. The right end of the first piston rod (24) extends to the outside of the cylinder (22) and is fixedly connected to a connecting block (240). A laser head (241) is mounted on the connecting block (240). A second piston plate (26) is slidably connected inside the left cylinder (22). A second piston rod (27) is fixedly connected to the left side of the second piston plate (26). The left end of the second piston rod (27) extends to the outside of the cylinder (22) and is fixedly connected to an arc-shaped contact block (270). The arc-shaped contact block (270) contacts the mold (11). The rectangular block (20) forms a first oil chamber (25) and a second oil chamber (28) with the first piston plate (23) and the second piston plate (26), respectively. The first oil chamber (25) and the second oil chamber (28) are connected through a through hole (21) opened inside the rectangular block (20). A feed adjustment component (3) is provided in the through hole (21) to adjust the lateral position of the first piston plate (23). A spring (29) is fixedly connected between the second piston plate (26) and the cylinder (22). The spring (29) is movably sleeved on the outside of the second piston rod (27). The spring (29) provides a leftward pressing force to the arc-shaped contact block (270) when it is in a stretched state.

2. The resin lens cutting system based on real-time sensing of curved surface curvature according to claim 1, characterized in that: The feed adjustment assembly (3) includes a circular tube (30), the outer wall of the circular tube (30) is slidably connected to the inner wall of the through hole (21), the right end of the circular tube (30) extends to the outside of the through hole (21) and is fixedly connected to an annular side plate (31), the outer wall of the annular side plate (31) is slidably connected to the inner wall of the cylinder (22).

3. The resin lens cutting system based on real-time sensing of curved surface curvature according to claim 2, characterized in that: The rectangular block (20) is fitted with a sleeve (32) inside, and the sleeve (32) has a threaded groove and is threaded to a first screw (33). The right end of the first screw (33) is fixedly connected to the annular side plate (31). The rectangular block (20) is fitted with a positioning rod (38) inside, and the right end of the positioning rod (38) is fixedly connected to the annular side plate (31).

4. The resin lens cutting system based on real-time sensing of curved surface curvature according to claim 3, characterized in that: The rectangular block (20) has a cavity (34) inside. A round rod (35) is rotatably connected between the inner walls of the front and rear sides of the cavity (34). A worm gear (36) is provided on the outer side of the round rod (35). The left end of the sleeve (32) is located inside the cavity (34), and a worm wheel (37) is fixedly connected to its outer side. The worm gear (36) meshes with the worm wheel (37). The front end of the round rod (35) extends to the outside of the rectangular block (20) and is fixedly connected to a knob (39).

5. The resin lens cutting system based on real-time sensing of curved surface curvature according to claim 4, characterized in that: The bottom of the rectangular block (20) is provided with a cutting and walking assembly (4), which includes two lifting platforms (41) set on the base plate (1). The top of the lifting platform (41) is fixedly connected with a U-shaped plate (42), and a second screw (43) is rotatably connected between the U-shaped plates (42). The bottom of the rectangular block (20) is fixedly connected with a protrusion (40), and the protrusion (40) is threadedly connected to the second screw (43).

6. The resin lens cutting system based on real-time sensing of curved surface curvature according to claim 5, characterized in that: A motor (44) is fixedly connected to the side of the U-shaped plate (42). The output shaft end of the motor (44) is fixedly connected to the second screw (43). Two crossbars (45) are fixedly connected between the U-shaped plates (42). The protrusion (40) is slidably connected to the crossbars (45).

7. The resin lens cutting system based on real-time sensing of curved surface curvature according to claim 6, characterized in that: The processing table (12) is provided with clamping and positioning components (5) on the front and rear sides, which include two support plates (50). Two cylinders (51) are fixedly connected to the outer side wall of the support plate (50). The movable end of the cylinder (51) extends into the support plate (50) and is fixedly connected to a clamping block (52).

8. The resin lens cutting system based on real-time sensing of curved surface curvature according to claim 7, characterized in that: A U-shaped frame (6) is fixedly connected to the top of the base plate (1), and a laser device (60) is installed on the top of the U-shaped frame (6). The laser device (60) and the laser head (241) are connected by a connecting wire (61).

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