A microlens polishing apparatus

Abstract

The utility model provides a kind of microlens grinding device, including base, the top of base is fixedly arranged with portal frame, the portal frame is fixedly arranged with joist in, the middle part of joist is provided with pivot, the top of pivot is fixedly arranged with bridge plate, the bridge plate top is fixedly connected with the clamp symmetrical to pivot, the side of portal frame is provided with the conveyor belt of height lower than clamp, the other side of portal frame is provided with lifting frame, the middle part of lifting frame is provided with transmission shaft.In the utility model, set up portal frame, set up conveyor belt on the side of portal frame, set up the millable disc that can be lifted on the other side of portal frame, set up the bridge plate that can be horizontally rotated in portal frame, then set up the clamp symmetrical to pivot on plate, so that microlens module on one clamp can be milled, another clamp can be carried out feeding and discharging operation, greatly improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of microlens processing technology, specifically a microlens grinding device. Background Technology

[0002] C-Lens are cylindrical, axially oriented miniature plano-convex lenses, with one end being spherical and the other flat. They are widely used in the manufacture of optical devices such as fiber optic communications, endoscopes, and lidar. Typical dimensions are: diameter 1.40 mm, axial length 2.00 mm, one end being a spherical surface with a radius of 1.500, and the other end being a flat surface inclined at 8° to the axis.

[0003] Patent CN109719588B discloses an upper mold and a method for forming a microlens module on the upper mold. The upper mold includes: a mold body, at least two first grinding plates, at least one second grinding plate, at least one extrusion plate, and fasteners. The mold body has a groove in its center, within which microlens material is densely arranged. The microlens material is cylindrical, with one spherical end close to the groove and the end to be ground away from it. At least two first grinding plates are attached to the mold body, and the number of second grinding plates equals the number of extrusion plates. Under the pressure of the extrusion plate, the second grinding plates, along with the at least two first grinding plates, surround the groove to fix the microlens material. Fasteners are used to fix the extrusion plate to the mold body. This upper mold can improve the processing efficiency of microlens material, reduce production costs, and facilitate obtaining a better grinding surface.

[0004] The specification of this prior art describes coating a fixing material onto the grinding pad and the microlens raw material, causing the grinding pad and the microlens raw material to form a solidified microlens module. The microlens module can then be removed from the upper mold and placed on the polishing disc for grinding. However, the existing equipment for grinding microlens modules has shortcomings in use: a clamp is set below the grinding disc to hold the microlens module, and then the polishing disc is controlled to descend to grind the aspherical end of the microlens module. However, during loading and unloading after grinding, the grinding disc is in an idle state for a long time, which greatly reduces the grinding efficiency for a large number of microlens modules that need to be ground.

[0005] Therefore, this utility model provides a microlens grinding device. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a microlens grinding device to solve the problems mentioned in the background section. This invention has the function of complementary grinding and loading / unloading operations, improving the efficiency of microlens module grinding. It also has the advantages of automatic clamping and automatic unloading and transmission, reducing labor intensity.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a microlens grinding device, comprising a base, a gantry frame fixedly mounted on the top of the base, a support beam fixedly mounted inside the gantry frame, a rotating shaft mounted in the middle of the support beam, a bridge plate fixedly mounted on the top of the rotating shaft, and a clamp symmetrical to the rotating shaft fixedly connected to the top of the bridge plate. A conveyor belt with a height lower than the clamp is mounted on one side of the gantry frame, and a lifting frame is mounted on the other side of the gantry frame. A drive shaft is mounted in the middle of the lifting frame, and a grinding disc with a height higher than the clamp is fixedly connected to the bottom of the drive shaft.

[0008] Furthermore, the two ends of the support beam are fixedly connected to the opposite sides of the gantry frame, and the bottom of the support beam is fixedly connected to an output shaft and a control motor fixedly connected to the bottom of the rotating shaft.

[0009] Furthermore, a suspension beam is fixedly connected to the top of the other side of the gantry frame. The lifting frame includes a base plate and two guide shafts fixedly installed on the upper surface of the base plate and respectively close to both ends. A guide sleeve is fixedly installed on the suspension beam and sleeved outside the guide shaft.

[0010] Furthermore, a servo electric cylinder is fixedly connected to the top of the cantilever beam, the output shaft of the servo electric cylinder is fixedly connected to the upper end face of the base plate, a drive motor is fixedly connected to the upper end face of the base plate, and the output shaft of the drive motor is fixedly connected to the top of the transmission shaft.

[0011] Furthermore, the fixture includes a tray and a rectangular clamping frame. The lower end face of the tray is fixedly connected to the upper end face of the bridge plate. The rectangular clamping frame is radially slidably connected to the upper end face of the tray. A baffle located between the rectangular clamping frame and the center of the tray is fixedly connected to the upper end face of the tray. The number of rectangular clamping frames is at least three and they are evenly distributed relative to the circumference of the tray.

[0012] Furthermore, the lower end face of the rectangular clamping frame is fitted with the upper end face of the tray, and a clearance notch opposite to the baffle is provided on one side of the rectangular clamping frame.

[0013] Furthermore, the rectangular clamping frame has limit sleeves welded to both sides, and the baffle has limit shafts fitted onto the outside of the limit sleeves welded to both ends via support plates.

[0014] Furthermore, a servo motor is fixedly connected to the bottom of the tray, and the output shaft of the servo motor is fixedly connected to a transmission disk located above the tray. An eccentric connecting pin corresponding to the rectangular clamping frame is fixedly connected to the upper end face of the transmission disk. One side of the rectangular clamping frame is rotatably connected to the corresponding eccentric connecting pin through a connecting rod.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. In this utility model, a gantry frame is set up, a conveyor belt is set up on one side of the gantry frame, a height-adjustable grinding disc is set up on the other side of the gantry frame, a horizontally rotatable bridge plate is set up inside the gantry frame, and then a clamp symmetrical to the rotation axis is set up on the plate, so that when the microlens module on one clamp is being ground, the other clamp can be loaded and unloaded, which greatly improves production efficiency.

[0017] 2. In this utility model, the fixture includes a rectangular clamping frame and a tray. The rectangular clamping frame slides radially on the upper surface of the tray. A baffle located on the centripetal side of the rectangular clamping frame is fixed on the upper surface of the tray. When the rectangular clamping frame moves radially, it can cooperate with the baffle to clamp and release the microlens module inside the rectangular clamping frame. This has the advantage of making the clamping and releasing of the microlens module more convenient. Moreover, when the rectangular clamping frame moves away from the center of the tray, it can push the microlens module inside away from the tray and drop it onto the conveyor belt. This has the advantage of making the loading and unloading of the microlens module more labor-saving and convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a microlens grinding device according to the present invention;

[0019] Figure 2 This is a schematic diagram showing the detailed assembly of the lifting frame, drive shaft, and gantry frame of the microlens grinding device of this utility model;

[0020] Figure 3 This is a schematic diagram of the fixture for a microlens grinding device according to the present invention;

[0021] Figure 4 for Figure 3 The diagram at the bottom.

[0022] In the diagram: 1. Base; 2. Gantry frame; 21. Cantilever beam; 211. Guide sleeve; 3. Support beam; 4. Rotating shaft; 5. Bridge plate; 6. Clamp; 61. Pallet; 611. Baffle; 6111. Support plate; 6112. Limiting shaft; 62. Rectangular clamping frame; 621. Clearance notch; 622. Limiting sleeve; 7. Conveyor belt; 8. Lifting frame; 81. Base plate; 82. Guide shaft; 9. Drive shaft; 101. Grinding disc; 102. Control motor; 103. Servo electric cylinder; 104. Drive motor; 105. Servo motor; 106. Transmission disc; 1061. Eccentric connecting pile; 107. Connecting rod. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please see Figures 1 to 4 This utility model provides a technical solution: a microlens grinding device, including a base 1, a gantry frame 2 fixedly mounted on the top of the base 1, a support beam 3 fixedly mounted inside the gantry frame 2, a rotating shaft 4 mounted in the middle of the support beam 3, a bridge plate 5 fixedly mounted on the top of the rotating shaft 4, and a clamp 6 symmetrically connected to the top of the bridge plate 5 relative to the rotating shaft 4. When the rotating shaft 4 drives the bridge plate 5 to rotate, the clamp 6 at the upper end of the bridge plate 5 revolves around the rotating shaft 4. The clamp 6 is used to hold a square or triangular microlens module formed by bonding a grinding pad and a large number of microlenses with a bonding material. After the clamp 6 holds the microlens module, it facilitates the grinding disc 101 to grind the aspherical ends of the microlenses.

[0025] The two ends of the support beam 3 are fixedly connected to the opposite sides of the gantry 2, and the bottom of the support beam 3 is fixedly connected to the output shaft and the bottom of the rotating shaft 4 is fixedly connected to the control motor 102, which provides driving force to the rotation of the rotating shaft 4.

[0026] Furthermore, a conveyor belt 7 with a height lower than that of the clamp 6 is installed on one side of the gantry frame 2, and a lifting frame 8 is installed on the other side of the gantry frame 2. Specifically, a suspension beam 21 is fixedly connected to the top of the other side of the gantry frame 2. The lifting frame 8 includes a base plate 81 and two guide shafts 82 fixedly installed on the upper surface of the base plate 81 and respectively close to both ends. A guide sleeve 211 is fixedly installed on the suspension beam 21 and sleeved on the outside of the guide shafts 82. A drive shaft 9 is installed in the middle of the lifting frame 8, and a grinding disc 101 with a height higher than that of the clamp 6 is fixedly connected to the bottom of the drive shaft 9. A servo cylinder 103 is fixedly connected to the top of the suspension beam 21. The output shaft of the servo cylinder 103 is fixedly connected to the upper surface of the base plate 81. The servo cylinder 103 provides control force for the up and down movement of the base plate 81. A drive motor 104 is fixedly connected to the upper surface of the base plate 81. The output shaft of the drive motor 104 is fixedly connected to the top of the drive shaft 9. The drive motor 104 rotates towards the drive shaft 9. The drive shaft 9 provides driving force, and when it rotates, it drives the grinding disc 101 to rotate. When the lifting frame 8 moves up and down, it can change the distance between the grinding disc 101 and the clamp 6 below it. When one clamp 6 on the bridge plate 5 is below the grinding disc 101, the other clamp 6 will be above the conveyor belt 7. That is to say, when the microlens module on one clamp 6 is being processed, the operator can perform loading and unloading operations on the other clamp 6. The unloaded microlens module can be directly transferred to the disassembly process by the conveyor belt 7. This setting can improve production efficiency.

[0027] In this embodiment, the clamp 6 includes a tray 61 and a rectangular clamping frame 62. The lower end face of the tray 61 is fixedly connected to the upper end face of the bridge plate 5. The rectangular clamping frame 62 is radially slidably connected to the upper end face of the tray 61. A baffle 611 located between the center of the rectangular clamping frame 62 and the center of the tray 61 is fixedly connected to the upper end face of the tray 61. The side of the rectangular clamping frame 62 away from the center of the tray 61 and the baffle 611 form a clamping structure for holding the microlens module. That is, when the rectangular clamping frame 62 moves towards the center of the tray 61, the rectangular clamping frame 62 and the baffle 611 will clamp the microlens module placed in the rectangular clamping frame 62 on the tray 61. When the rectangular clamping frame 62 moves in the opposite direction, it will push the microlens module away from the tray 61, so that the ground microlens module can fall onto the conveyor belt 7 below. This setting facilitates automatic unloading and automatic clamping control, reduces labor intensity, and improves the efficiency of unloading and loading operations.

[0028] Among them, the rectangular clamping frame 62 has limit sleeves 622 welded on both sides, and the two ends of the baffle 611 are welded with limit shafts 6112 sleeved on the outside of the limit sleeves 622 through the support plate 6111. The limit shafts 6112 and the limit sleeves 622 slide together to achieve the effect of radial sliding of the rectangular clamping frame 62 relative to the tray 61.

[0029] In this embodiment, there are at least three rectangular clamping frames 62, which are evenly distributed around the tray 61. Each rectangular clamping frame 62 holds a set of microlens modules, which increases the number of microlens modules that can be processed by the grinding disc 101 in a single grinding operation, and greatly improves the grinding output.

[0030] In this embodiment, a servo motor 105 is fixedly connected to the bottom of the tray 61. The output shaft of the servo motor 105 is fixedly connected to a transmission disk 106 located above the tray 61. An eccentric connecting pin 1061 corresponding to the rectangular clamping frame 62 is fixedly connected to the upper end face of the transmission disk 106. One side of the rectangular clamping frame 62 is rotatably connected to the corresponding eccentric connecting pin 1061 through a connecting rod 107. When the transmission disk 106 rotates, it will drive the corresponding rectangular clamping frame 62 to move radially relative to the tray 61 through the connecting rod 107. This can control the synchronous movement of the rectangular clamping frame 62 on the current clamp 6, which has the advantages of automated clamping and automated unloading.

[0031] Preferably, the lower end face of the rectangular clamping frame 62 is fitted with the upper end face of the tray 61, and a clearance notch 621 opposite to the baffle 611 is provided on one side of the rectangular clamping frame 62. After the baffle 611 enters the clearance notch 621, it and the rectangular clamping frame 62 can clamp the microlens module. This arrangement can improve the stability of clamping the microlens module.

[0032] Working principle: Start the control motor 102, the rotating shaft 4 rotates, driving the bridge plate 5 to rotate, so that one of the clamps 6 is above the conveyor belt 7. Then, control the servo motor 105 below the clamp 6 to drive the transmission disk 106 to rotate a certain angle. The connecting rod 107 drives the corresponding rectangular clamps 62 to move outward a certain distance. At this time, the rectangular clamps 62 are in a partially suspended state. Then, place the solidified square microlens module inside the rectangular clamp 62, so that the vertical planes on both sides of the square microlens module are aligned with the baffle 611 and the opposite sides inside the rectangular clamp 62, respectively. Place the microlens module in each rectangular clamp 62 in this manner. Then, control the transmission disk 106 to rotate in the opposite direction through the servo motor 105. At this time, each rectangular clamp 62 moves towards the center of the tray 61. Under the action of the baffle 611, the two sides of the microlens module are clamped. Then, control the rotating shaft 4 to rotate, causing the clamp 6 fully loaded with microlens modules to move... Move to the bottom of the grinding disc 101, start the drive motor 104, and the transmission shaft 9 drives the grinding disc 101 to rotate. Then, control the lifting frame 8 to descend through the servo cylinder 103, so that the grinding disc 101 descends and grinds the upper surface of the microlens module. During this process, the material can be loaded onto another clamp 6 located above the conveyor belt 7. After the microlens module is ground, control the bridge plate 5 to rotate so that the ground microlens modules are located above the conveyor belt 7. Then, control the servo motor 105 at the bottom of the clamp 6 above the conveyor belt 7 to drive the transmission disc 106 to rotate in the opposite direction. At this time, the connecting rod 107 will push the rectangular clamp 62 to move in the opposite direction. The rectangular clamp 62 will push the microlens module inside to the outside of the tray 61. The microlens module will fall directly onto the conveyor belt 7. Start the conveyor belt 7 to transfer the ground microlens module to the next station, such as the disassembly station. After disassembly, the ground microlens can be obtained.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A microlens grinding apparatus, comprising a base (1), characterized in that, A gantry frame (2) is fixedly installed on the top of the base (1). A support beam (3) is fixedly installed inside the gantry frame (2). A rotating shaft (4) is installed in the middle of the support beam (3). A bridge plate (5) is fixedly installed on the top of the rotating shaft (4). A clamp (6) symmetrical to the rotating shaft (4) is fixedly connected to the top of the bridge plate (5). A conveyor belt (7) with a height lower than the clamp (6) is installed on one side of the gantry frame (2). A lifting frame (8) is installed on the other side of the gantry frame (2). A drive shaft (9) is installed in the middle of the lifting frame (8). A grinding disc (101) with a height higher than the clamp (6) is fixedly connected to the bottom of the drive shaft (9).

2. The microlens grinding apparatus according to claim 1, characterized in that: The two ends of the support beam (3) are fixedly connected to the opposite sides of the gantry frame (2), and the bottom of the support beam (3) is fixedly connected to the output shaft and the bottom of the rotating shaft (4) is fixedly connected to the control motor (102).

3. The microlens grinding apparatus according to claim 1, characterized in that: A suspension beam (21) is fixedly connected to the top of the other side of the gantry (2). The lifting frame (8) includes a base plate (81) and two guide shafts (82) fixedly installed on the upper surface of the base plate (81) and respectively close to both ends. A guide sleeve (211) is fixedly installed on the suspension beam (21) and sleeved outside the guide shaft (82).

4. The microlens grinding apparatus according to claim 3, characterized in that: A servo electric cylinder (103) is fixedly connected to the top of the cantilever beam (21). The output shaft of the servo electric cylinder (103) is fixedly connected to the upper end face of the base plate (81). A drive motor (104) is fixedly connected to the upper end face of the base plate (81). The output shaft of the drive motor (104) is fixedly connected to the top of the transmission shaft (9).

5. The microlens grinding apparatus according to claim 1, characterized in that: The clamp (6) includes a tray (61) and a rectangular clamping frame (62). The lower end face of the tray (61) is fixedly connected to the upper end face of the bridge plate (5). The rectangular clamping frame (62) is radially slidably connected to the upper end face of the tray (61). A baffle (611) located between the center of the rectangular clamping frame (62) and the center of the tray (61) is fixedly connected to the upper end face of the tray (61). The number of rectangular clamping frames (62) is at least three and they are evenly distributed around the circumference of the tray (61).

6. The microlens grinding apparatus according to claim 5, characterized in that: The lower end face of the rectangular clamp (62) is in contact with the upper end face of the tray (61), and a clearance notch (621) opposite to the baffle (611) is provided on one side of the rectangular clamp (62).

7. A microlens grinding apparatus according to claim 5, characterized in that: The rectangular clamp (62) has a limit sleeve (622) welded on both sides, and the baffle (611) has a limit shaft (6112) welded to the outside of the limit sleeve (622) through the support plate (6111) at both ends.

8. A microlens grinding apparatus according to claim 5, characterized in that: A servo motor (105) is fixedly connected to the bottom of the tray (61). The output shaft of the servo motor (105) is fixedly connected to a transmission disk (106) located above the tray (61). An eccentric connecting pin (1061) corresponding to the rectangular clamping frame (62) is fixedly connected to the upper end face of the transmission disk (106). One side of the rectangular clamping frame (62) is rotatably connected to the corresponding eccentric connecting pin (1061) through a connecting rod (107).

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