Automatic press-fit system and press-fit method for TO package laser diode

Abstract

A TO package laser diode automatic press-fit system and press-fit method belong to the technical field of optoelectronic device packaging. The system comprises a press-fit station, supports and a pressing mechanism are arranged opposite to the front and back of the press-fit station, a first feeding mechanism and a second feeding mechanism are arranged opposite to the left and right sides, a first grabbing mechanism and a second grabbing mechanism are arranged on the supports, and an LD visual positioning mechanism is arranged between the first grabbing mechanism and the press-fit station. The press-fit station comprises a rotating disc, a square tube seat positioning hole is arranged in the feeding area and the press-fit area of the rotating disc, a group of press-fit components for physical positioning of LD materials are coaxially arranged below each tube seat positioning hole. Only the LD material is corrected in angle through visual positioning, the tube seat is positioned in shape by the square tube seat positioning hole on the rotating disc, and the LD material is physically positioned by the internal structure of the guide pipe, so that the visual hardware investment cost is greatly reduced, the visual debugging process is simplified, and the press-fit efficiency of the whole machine is improved.

Description

Technical Field

[0001] This invention relates to the field of optoelectronic device packaging technology, and in particular to an automatic press-fit system and method for TO-packaged laser diodes. Background Technology

[0002] Transistor Outline Package (TO) laser diodes are widely used in fiber optic communication, lidar, and medical aesthetics due to their small size, low cost, and good high-frequency characteristics. During the packaging process, the TO socket (housing) needs to be press-fitted with the laser diode chip or die with heat sink to ensure good mechanical fixation and heat conduction path.

[0003] To improve pressing efficiency, automatic TO pressing devices have emerged, which are equipped with a feeding mechanism, a discharging mechanism, a pressing mechanism, and a vision monitoring and debugging mechanism. Through the cooperation of the feeding and discharging mechanisms, the loading and unloading actions are automated and continuous. The pressing mechanism is used to press the LD (Laser Diode) material together with the TO tube socket, and the vision monitoring and debugging mechanism is used to ensure the coaxiality of the LD material and the tube socket.

[0004] The existing TO automatic pressing device relies entirely on visual monitoring for all adjustments to the relative angle and position of the LD material and the tube seat. This requires at least two vision systems, resulting in high operating costs. It also requires identification and adjustment of both the LD material box and the tube seat, leading to long production line cycle times. Furthermore, the dual vision systems have poor long-term operational stability and large discrepancies in coaxiality consistency. Summary of the Invention

[0005] To address the technical problems of existing TO automatic pressing devices, which rely entirely on visual monitoring and debugging to ensure product coaxiality, resulting in high costs and long production line cycles, this invention provides an automatic pressing system and method for TO packaged laser diodes.

[0006] The technical solution of this invention is as follows: This invention provides an automatic pressing and fitting system for TO-packaged laser diodes, including a worktable with a pressing and fitting station. Supports and pressing mechanisms are arranged opposite each other on the front and rear sides of the pressing and fitting station. A first feeding mechanism and a second feeding mechanism are arranged opposite each other on the left and right sides of the pressing and fitting station. The support is equipped with a first gripping mechanism for gripping LD materials and a second gripping mechanism for gripping tube seats and the pressed and fitted finished product. An LD vision positioning mechanism is provided between the first gripping mechanism and the pressing and fitting station to assist in the positioning and adjustment of the plane angle of the LD materials. The pressing and fitting station includes a horizontally placed rotary table. A square tube seat positioning hole is provided in both the feeding area and the pressing and fitting area of ​​the rotary table. A set of pressing and fitting components is coaxially arranged directly below each tube seat positioning hole. Each pressing and fitting component includes a guide tube movably disposed within the tube seat positioning hole. The upper end of the guide tube supports the tube seat, and the interior of the guide tube is used for the physical positioning of the LD materials. Only the LD material is positioned and its angle is corrected by vision. The tube seat is positioned by the square tube seat positioning hole on the rotary table. The LD material is positioned by the internal structure of the guide tube. There is no need for vision to correct the posture of the tube seat or the coaxiality of the tube seat and the LD material. By sharing the positioning function through mechanical structure, the investment cost of vision hardware is greatly reduced, the vision debugging process is simplified, the image recognition process is reduced, and the production line cycle time is shortened. At the same time, it avoids the stability defects caused by the long-term operation drift of dual vision systems. Moreover, the rotary table integrates feeding and pressing stations, which can simultaneously complete the pre-placement of materials and pressing operations. The parallel operation of the process improves the overall pressing efficiency of the machine.

[0007] Preferably, the guide tube is vertically slidably disposed within the limiting frame, which is fixedly installed at the bottom of the rotating disk. A limiting plate is fixedly connected to the bottom end of the guide tube, and both ends of the limiting plate extend outward from the limiting frame to connect to the guide tube lifting assembly. A first return spring is sleeved on the guide tube. A top tube for pushing the LD material is slidably disposed inside the guide tube. The top tube is coaxially disposed with the guide tube, and the bottom end of the top tube extends downward through the limiting frame. A second return spring is sleeved on the top tube. The limiting frame restricts the guide tube to only vertically rise and fall. The two return springs provide automatic return elastic force for the guide tube and the top tube, respectively. After lifting and pressing are completed, the components automatically return to their original positions. The top tube moves independently and can push the LD upward to complete the pressing independently. The actions do not interfere with each other.

[0008] Preferably, a number of guide positioning protrusions are fixedly provided on the inner wall of the conduit at circumferential intervals. The guide positioning protrusions extend along the axial direction of the conduit and correspond one-to-one with the grooves on the LD material. The top pipe is provided with a clearance groove, which corresponds one-to-one with the guide positioning protrusions. The guide positioning protrusions and the LD grooves engage to achieve physical anti-foolproof positioning. After the LD falls into the conduit, the circumferential angle is mechanically locked, eliminating the need for visual fine-tuning of the angle. Structurally, this ensures that the LD and the pipe seat are coaxial. The clearance groove of the top pipe avoids the protrusions, and the lifting and lowering process of the top pipe will not interfere with the guide structure. The LD is pushed smoothly without any attitude deviation.

[0009] Preferably, the conduit lifting assembly is located below the rotary table feeding area. The conduit lifting assembly includes a bracket and a lifting cylinder. The lifting cylinder is vertically mounted on the workbench via a first fixed frame. The bracket is fixedly mounted on the telescopic end of the top of the lifting cylinder. The bracket is used to cooperate with the two protruding ends of the limiting plate. The lifting cylinder drives the bracket to lift the conduit as a whole, raising the height of the conduit to facilitate the feeding of LD material by the suction nozzle.

[0010] Preferably, the pressing mechanism includes a second fixed frame, on which an upper pressing cylinder and a lower pressing cylinder are provided. The upper pressing cylinder and the lower pressing cylinder are arranged opposite each other on the upper and lower sides of the rotary disc pressing area. The lower pressing cylinder is located directly above the upper pressing cylinder. The lower pressing cylinder presses the tube seat downward to restrict the tube seat from floating and shifting upward during the pressing process. The upper pressing cylinder synchronously drives the top tube to move upward and push the LD. The upper and lower bidirectional cooperation completes the pressing and the pressing force is stable.

[0011] Preferably, the first feeding mechanism includes an LD hopper that moves along the Y-axis, and the LD hopper has a plurality of LD material holes, which are circular holes. The second feeding mechanism includes a tube seat and a finished product hopper that move along the Y-axis. The tube seat and the finished product hopper include a heated tube seat hopper and a cooled finished product hopper that are arranged opposite each other along the Y-axis. The tube seat hopper has a plurality of tube seat material holes, and the finished product hopper has a plurality of finished product material holes. The tube seat material holes are square holes, and the finished product material holes are stepped holes with an outer square and an inner round shape. The LD material holes, tube seat material holes, and finished product material holes are all equally spaced along the X-axis and Y-axis. The LD circular holes and the tube seat square holes are used to separate the two types of materials, which facilitates the gripping mechanism to identify and pick up the materials. The matrix-style equidistant material holes can store multiple sets of workpieces at one time, reducing the frequency of frequent material replenishment and increasing the continuous operation time of the equipment.

[0012] Preferably, the edge of the tube seat positioning hole is parallel to the edge of the tube seat material hole and the finished product material hole, ensuring that after the gripper grabs the tube seat or finished product, there is no need for additional rotation and angle adjustment. It can be directly lowered vertically into the square positioning hole, simplifying the motion axis configuration of the second gripping mechanism and reducing the difficulty of equipment control.

[0013] Preferably, the first gripping mechanism includes a suction nozzle capable of moving along the X and Z axes and rotating around the Z axis, the second gripping mechanism includes a gripper capable of moving along the X and Z axes, and the LD vision positioning mechanism includes a camera assembly. The axis of the suction nozzle, the axis of the gripper, the lens axis of the camera assembly, and the axis of the feeding area guide tube are all on the same straight line, shortening the suction nozzle's conveying stroke. After the LD is visually corrected for the angle, it is conveyed linearly to the guide tube without the need for large-scale translational correction, thus improving the positioning speed. The suction nozzle has its own rotation axis, and the LD angle compensation is completed by a single vision system, eliminating the need for a tube seat vision module.

[0014] Preferably, the initial position, material picking position, and angle calibration position of the suction nozzle are aligned with the axis of the tube seat positioning hole, the initial position, material picking position, and finished product placement position of the gripper in the rotary table feeding area. The centers of each station are aligned, and there is no lateral offset in gripping and conveying. This reduces the amount of coordinate compensation calculation, lowers the computational load of vision and motion control, and improves the equipment's operating response speed.

[0015] A pressing and mixing method, comprising: The suction nozzle moves from its initial position to the LD hopper to pick up LD material. At the same time, the gripper moves from its initial position to the tube seat hopper to grab the tube seat. After the suction nozzle and gripper have finished grabbing, they reset themselves. The suction nozzle transfers the sucked LD material to the LD vision positioning mechanism to obtain a shape image of the LD material and upload it to calculate the angle deviation. The suction nozzle drives the LD material to rotate and adjust according to the calculated angle and direction, so that the groove on the LD material is aligned with the guide positioning protrusion in the guide tube. The suction nozzle transfers the LD material to the tube seat positioning hole directly above the rotary table feeding area. The guide tube lifting assembly lifts the guide tube, and the suction nozzle releases the LD material, causing it to fall into the guide tube. The guide tube lifting assembly, the guide tube, and the suction nozzle then reset. The gripper moves the tube seat to the position of the tube seat positioning hole in the rotary table loading area. The gripper releases the tube seat so that it falls into the tube seat positioning hole and is supported by the guide tube. The gripper then resets. The rotary table rotates the pre-loaded LD material and the pipe seat to the pressing area. The pressing mechanism presses down on the pipe seat and pushes the top pipe upward to press the LD material in the guide tube into the pipe seat. After the pressing is completed, the pressing mechanism resets. The rotary table rotates the pressed finished product to the loading area. The grippers move from the initial position to the loading area, grab the finished product and transfer it to the finished product bin, and then the grippers reset.

[0016] Only the LD performs visual angle correction, and the tube seat is mechanically positioned by the square positioning hole, which eliminates a visual recognition process and reduces the single cycle time. The secondary mechanical positioning of the LD is completed by the guide tube protrusion, ensuring stable coaxiality accuracy. The rotary table operates in two alternating positions, and material picking and pressing are synchronized and parallel, resulting in higher pressing efficiency for the whole machine.

[0017] As can be seen from the above technical solutions, the advantages of the present invention are: Only the LD material is positioned and its angle is corrected by vision. The tube seat is positioned by the square tube seat positioning hole on the rotary table. The LD material is positioned by the internal structure of the guide tube. There is no need for vision to correct the posture of the tube seat or the coaxiality of the tube seat and the LD material. By sharing the positioning function through mechanical structure, the investment cost of vision hardware is greatly reduced, the vision debugging process is simplified, the image recognition process is reduced, and the production line cycle time is shortened. At the same time, it avoids the stability defects caused by the long-term operation drift of dual vision systems. Moreover, the rotary table integrates feeding and pressing stations, which can simultaneously complete the pre-placement of materials and pressing operations. The parallel operation of the process improves the overall pressing efficiency of the machine. Attached Figure Description

[0018] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a first-view perspective three-dimensional structural diagram of the TO-packaged laser diode automatic pressure fitting system according to one or more embodiments of the present invention. Figure 2 This is a second-view perspective three-dimensional structural diagram of the TO-packaged laser diode automatic pressure fitting system according to one or more embodiments of the present invention; Figure 3 This is a third-view perspective three-dimensional structural diagram of the TO-packaged laser diode automatic pressure fitting system according to one or more embodiments of the present invention; Figure 4 This is a top view of the automatic pressure fitting system for TO-packaged laser diodes according to one or more embodiments of the present invention. Figure 5 This is a schematic diagram showing the positions of the first gripping mechanism and the second gripping mechanism according to one or more embodiments of the present invention; Figure 6 This is a schematic diagram of the structure of the press-fit assembly according to one or more embodiments of the present invention; Figure 7 for Figure 6 A schematic diagram of the DD cross-sectional structure shown. Figure 8 This is a schematic diagram of the mating structure of the LD and the catheter according to one or more embodiments of the present invention; Figure 9 This is a partially enlarged structural diagram of the LD used for positioning with a catheter according to one or more embodiments of the present invention; Figure 10This is a partially enlarged structural diagram of the catheter of the present invention, according to one or more embodiments, used for positioning in conjunction with an LD; Figure 11 This is a schematic diagram of the loading and unloading positions according to one or more embodiments of the present invention; Figure 12 This is a schematic diagram of the structure of the LD silo according to one or more embodiments of the present invention; Figure 13 This is a schematic diagram of the pipe seat and finished product silo according to one or more embodiments of the present invention; The components represented by the various reference numerals in the diagram are: 1. Workbench; 2. Support frame; 21. Vertical beam; 22. First horizontal beam; 23. Second horizontal beam; 3. First feeding mechanism; 31. First Y-axis moving assembly; 32. First connecting frame; 33. LD hopper; 34. LD material hole; 35. First material picking position; 4. First gripping mechanism; 41. First X-axis moving assembly; 42. First Z-axis moving assembly; 43. R-axis rotating assembly; 44. Nozzle; 45. First initial position; 5. Second feeding mechanism; 51. Second Y-axis moving assembly; 52. Second connecting frame; 53. Tube seat and finished product bin; 531. Tube seat bin; 532. Finished product bin; 54. Tube seat material hole; 55. Finished product material hole; 56. Second material picking position; 57. Finished product placement position; 6. Second gripping mechanism; 61. Second X-axis moving assembly; 62. Second Z-axis moving assembly; 63. Gripper; 64. Second initial position; 7. Press-fit station; 71. Rotary disc; 72. Rotary motor assembly; 73. Pipe seat positioning hole; 74. Press-fit assembly; 741. Limiting frame; 742. Guide tube; 7421. Guide positioning protrusion; 743. Jacking pipe; 7431. Clearance groove; 744. First return spring; 745. Second return spring; 746. Limiting plate; 75. Guide tube lifting assembly; 751. Bracket; 752. First fixing frame; 753. Lifting cylinder; 76. Third initial position; 77. Press-fit position; 8. Pressing mechanism; 81. Second fixed frame; 82. Lowering cylinder; 83. Lowering head; 84. Uppering cylinder; 85. Uppering head; 9. LD visual positioning mechanism; 91. Third fixing frame; 92. Camera assembly; 93. Angle calibration position; 10. LD material; 101. Groove. Detailed Implementation

[0020] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0021] Example 1 In a typical embodiment of the present invention, such as Figures 1-4 As shown, an automatic press-fit system for TO-packaged laser diodes is proposed, comprising: a worktable 1, a support 2, a first feeding mechanism 3, a first gripping mechanism 4, a second feeding mechanism 5, a second gripping mechanism 6, a press-fit station 7, a pressing mechanism 8, and an LD vision positioning mechanism 9. The press-fit station 7 is disposed on the worktable 1. The support 2 and the pressing mechanism 8 are positioned opposite each other on the front and rear sides of the press-fit station 7, and are both fixedly mounted on the worktable 1. The first feeding mechanism 3 and the second feeding mechanism 5 are also fixedly mounted on the worktable 1, and are positioned opposite each other on the left and right sides of the press-fit station 7. The first feeding mechanism 3 is used for feeding the LD material 10. The second feeding mechanism 5 is used for feeding the tube seat and unloading and storing the finished product; the first gripping mechanism 4 and the second gripping mechanism 6 are both mounted on the bracket 2. The first gripping mechanism 4 is used to grip the LD material 10 on the first feeding mechanism 3 to the pressing station 7. The LD vision positioning mechanism 9 is located between the first gripping mechanism 4 and the pressing station 7 to assist in the positioning and adjustment of the plane angle of the LD material 10, so as to facilitate the subsequent physical alignment of the LD material 10 with the tube seat. The second gripping mechanism 6 is used to grip the tube seat on the second feeding mechanism 5 to the pressing station 7 and to grip the finished product on the pressing station 7 to the second feeding mechanism 5. The pressing mechanism 8 is used to press the LD material 10 on the pressing station 7 together with the tube seat.

[0022] The pressing station 7 includes a rotary table 71, a rotary motor assembly 72, pipe seat positioning holes 73, a pressing assembly 74, and a guide tube lifting assembly 75. The rotary motor assembly 72 is fixedly mounted on the workbench 1, and the rotary table 71 is fixedly connected to the output end of the rotary motor assembly 72. The rotary table 71 is placed horizontally and can rotate around its axis. The pipe seat positioning holes 73 are rectangular holes to accommodate pipe seats with an outer square and inner circle structure, achieving physical positioning of the pipe seats. There are two pipe seat positioning holes 73, which are located on the rotary table 71 and are positioned opposite each other with respect to the center of the rotary table 71. One pipe seat positioning hole 73 is located in the feeding area, and the other pipe seat positioning hole 73 is located in the pressing area. The pressing assembly 74 has two sets, and the pressing assembly... Each component 74 corresponds one-to-one with the pipe seat positioning hole 73. Specifically, a set of pressing components 74 is fixedly installed directly below each pipe seat positioning hole 73. The pressing components 74 are installed on the lower surface of the rotating disk 71 and are coaxially arranged with the corresponding pipe seat positioning hole 73. The pressing components 74 are movably arranged inside the pipe seat positioning hole 73. The inside of the pressing components 74 is used for the physical positioning of the LD material 10, and the upper end of the pressing components 74 is used for the support of the pipe seat to ensure the coaxiality of the LD material 10 and the pipe seat after pressing. The guide tube lifting component 75 is fixedly arranged on the workbench 1. The guide tube lifting component 75 is arranged opposite to the pressing mechanism 8 to temporarily lift the guide tube 742 of the pressing components 74 to receive the LD material 10.

[0023] like Figure 6 and Figure 7 As shown, the press assembly 74 includes a limiting frame 741, a guide tube 742, a top tube 743, a first return spring 744, a second return spring 745, and a limiting plate 746. The limiting frame 741 has a U-shaped structure and is fixedly installed at the bottom of the rotating disk 71 by bolts. The guide tube 742 is vertically slidably disposed inside the limiting frame 741. The bottom end of the guide tube 742 is fixedly connected to the limiting plate 746. The surface of the limiting plate 746 is perpendicular to the axis of the guide tube 742. The limiting plate 746 is slidably connected to the inner wall of the limiting frame 741, and both ends of the limiting plate 746 extend outward from the limiting frame 741. 41. The first reset spring 744 is sleeved on the conduit 742. The two ends of the limiting plate 746 are used to contact the conduit lifting assembly 75. The limiting plate 746 is used to push the conduit to move upward, and at the same time plays a sliding guiding role. It can also compress the first reset spring 744 to facilitate the self-reset of the conduit 742. The jacking tube 743 is inserted into the conduit 742 and is slidably connected to the conduit 742. The jacking tube 743 has a cross-shaped structure. The second reset spring 745 is sleeved on the jacking tube 743 and is located in the limiting frame 741 for the self-reset of the jacking tube 743.

[0024] Specifically, the bottom end of the jacking tube 743 extends downward through the limiting frame 741. The upper end of the first return spring 744 contacts the lower surface of the rotating disk 71, and the lower end of the first return spring 744 contacts the upper surface of the limiting plate 746, so that the first return spring 744 can be compressed when the guide tube 742 moves upward. The upper end of the second return spring 745 contacts the inner wall of the inner cavity of the limiting frame 741, and the lower end of the second return spring 745 contacts the protrusion of the jacking tube 743, so that the second return spring 745 is compressed when the jacking tube 743 moves upward.

[0025] In this embodiment, the inside of the conduit 742 is used to place and position the LD material 10. The inner diameter of the conduit 742 matches the outer diameter of the LD material 10, and the inner diameter of the conduit 742 is the same as the inner diameter of the tube seat to ensure the coaxiality of the press fit between the LD material 10 and the tube seat. The top end of the conduit 742 is used to support the tube seat. The top tube 743 is used to push the LD material 10 upward to achieve the press fit with the tube seat.

[0026] like Figure 8 , Figure 9 and Figure 10 As shown, a guide positioning protrusion 7421 is fixedly provided on the inner wall of the conduit 742. The guide positioning protrusion 7421 extends along the axial direction of the conduit 742, and there are several guide positioning protrusions 7421 arranged at intervals along the circumference of the conduit 742. The LD material 10 itself has a groove 101. The guide positioning protrusion 7421 corresponds to the groove 101 one by one. Through the cooperation of the guide positioning protrusion 7421 and the groove 101, the physical positioning of the LD material 10 is realized, ensuring the coaxiality of the LD material 10 and the conduit 742, and thus ensuring the coaxiality of the LD material 10 and the pipe seat. The top pipe 743 is provided with an avoidance groove 7431, which corresponds to the guide positioning protrusion 7421 one by one, so as to avoid the guide positioning protrusion 7421 and ensure that the top pipe 743 can slide vertically in the conduit 742.

[0027] The conduit lifting assembly 75 includes a bracket 751, a first fixed frame 752, and a lifting cylinder 753. The first fixed frame 752 is fixedly mounted on the workbench 1, and the lifting cylinder 753 is vertically fixedly mounted on the first fixed frame 752. The bracket 751 has a U-shaped structure for contacting both ends of the limiting plate 746, thereby pushing the conduit 742 to move vertically. The bracket 751 is fixedly mounted on the telescopic end at the top of the lifting cylinder 753.

[0028] The pressing mechanism 8 includes a second fixed frame 81, a lower pressing cylinder 82, a lower pressing head 83, an upper pressing cylinder 84, and an upper pressing head 85. The second fixed frame 81 is fixedly mounted on the workbench 1. The upper pressing cylinder 84 and the lower pressing cylinder 82 are both vertically fixedly mounted on the second fixed frame 81. The upper pressing cylinder 84 and the lower pressing cylinder 82 are arranged opposite each other on the upper and lower sides of the rotating disk 71. The lower pressing cylinder 82 is located directly above the upper pressing cylinder 84. The lower pressing head 83 is fixedly mounted at the bottom end of the lower pressing cylinder 82 for pushing the tube seat. The upper pressing head 85 is fixedly mounted at the top end of the upper pressing cylinder 84 for pushing the top tube 743, thereby pushing the LD material 10 in the guide tube 742 to press against the tube seat through the top tube 743.

[0029] The first feeding mechanism 3 includes a first Y-axis moving assembly 31, a first connecting frame 32, and an LD hopper 33. The first Y-axis moving assembly 31 is horizontally fixed on the worktable 1 along the Y-axis. The LD hopper 33 is connected to the first Y-axis moving assembly 31 through the first connecting frame 32, so that the first Y-axis moving assembly 31 can drive the LD hopper 33 to move along the Y-axis direction. Figure 12 As shown, the LD hopper 33 is provided with a number of LD material holes 34. The LD material holes 34 are circular holes for placing LD material 10. The LD material holes 34 are arranged at equal intervals along the X-axis and Y-axis directions.

[0030] The second feeding mechanism 5 includes a second Y-axis moving assembly 51, a second connecting frame 52, a tube seat, and a finished product bin 53. The second Y-axis moving assembly 51 is horizontally fixed on the worktable 1 along the Y-axis. The tube seat and the finished product bin 53 are connected to the second Y-axis moving assembly 51 through the second connecting frame 52, so that the tube seat and the finished product bin 53 can be moved along the Y-axis direction by the second Y-axis moving assembly 51. Figure 13 As shown, the tube seat and finished product hopper 53 includes a tube seat hopper 531 and a finished product hopper 532. The tube seat hopper 531 and the finished product hopper 532 are arranged opposite each other along the Y-axis. The tube seat hopper 531 is provided with a plurality of tube seat material holes 54, and the finished product hopper 532 is provided with a plurality of finished product material holes 55. The tube seat material holes 54 are square holes for placing tube seats, and the finished product material holes 55 are stepped holes with an outer square and an inner circle for placing finished products. The tube seat material holes 54 and the finished product material holes 55 are arranged at equal intervals along the X-axis and Y-axis.

[0031] The tube seat compartment 531 has a heating function, which is used to preheat the tube seat before pressing. It uses the principle of thermal expansion and contraction to increase the heating orifice of the tube seat, reduce the initial pressing force, and to a certain extent avoid mechanical damage to the material during the pressing process. The finished product compartment 532 has a cooling function, which cools down and shrinks the pressed finished tube seat, which helps the tube seat and LD fit tightly together.

[0032] In this embodiment, the center spacing of the LD material holes 34 in the LD material bin 33 in the X and Y directions is set to d. Similarly, the center spacing of the tube seat material holes 54 in the tube seat bin 531 in the X and Y directions is set to d. The center spacing of the finished product material holes 55 in the finished product bin 532 in the X and Y directions is set to d.

[0033] The support 2 includes a vertical beam 21, a first horizontal beam 22, and a second horizontal beam 23. Several vertical beams 21 are provided and are fixedly installed on the workbench 1. There is one first horizontal beam 22 and one second horizontal beam 23. The height of the first horizontal beam 22 is higher than that of the second horizontal beam 23. The first horizontal beam 22 and the second horizontal beam 23 are in the same vertical plane, and the adjacent ends of the first horizontal beam 22 and the second horizontal beam 23 overlap. The overlapping end of the first horizontal beam 22 and the second horizontal beam 23 is located directly above a tube seat positioning hole 73 on the rotating disk 71 for placing the LD material 10 and the tube seat.

[0034] The first gripping mechanism 4 is mounted on the first crossbeam 22 for gripping the LD material 10, and the second gripping mechanism 6 is mounted on the second crossbeam 23 for gripping the tube seat and the finished product. The first gripping mechanism 4 includes a first X-axis moving assembly 41, a first Z-axis moving assembly 42, an R-axis rotating assembly 43, and a suction nozzle 44. The first X-axis moving assembly 41 is fixedly mounted on the first crossbeam 22, and the first Z-axis moving assembly 42 is movably mounted on the first X-axis moving assembly 41. The first Z-axis moving assembly 42 can move along the first crossbeam 22 under the drive of the first X-axis moving assembly 41. The R-axis rotating assembly 43 is movably mounted on the first Z-axis moving assembly 42 and can move vertically under the drive of the first Z-axis moving assembly 42. The suction nozzle 44 is fixedly mounted on the R-axis of the R-axis rotating assembly 43. The R-axis and the suction nozzle 44 are coaxially arranged and connected. The suction nozzle 44 can rotate around the Z-axis under the drive of the R-axis rotating assembly 43 to change the angle of the LD material 10.

[0035] The second gripping mechanism 6 includes a second X-axis moving component 61, a second Z-axis moving component 62, and a gripper 63. The second X-axis moving component 61 is fixedly mounted on the second crossbeam 23, and the second Z-axis moving component 62 is movably mounted on the second X-axis moving component 61. The second Z-axis moving component 62 can move along the second crossbeam 23 under the drive of the second X-axis moving component 61. The gripper 63 is mounted on the second Z-axis moving component 62 and can move vertically under the drive of the second Z-axis moving component 62.

[0036] It is understandable that the first Y-axis moving component 31, the first X-axis moving component 41, the first Z-axis moving component 42, the second Y-axis moving component 51, the second X-axis moving component 61, and the second Z-axis moving component 62 are all existing motor-driven lead screw pair moving structures, and the R-axis rotating component 43 is a servo motor-driven rotating structure. The specifics will not be elaborated further here.

[0037] The LD visual positioning mechanism 9 includes a third fixed frame 91 and a camera assembly 92. The third fixed frame 91 is fixedly mounted on the worktable 1. The camera assembly 92 includes a lens, an industrial camera, a background light, etc., to identify the angle on the XY plane of the LD material 10, so that the groove 101 on the LD material 10 is aligned with the guide positioning protrusion 7421 in the conduit 742.

[0038] like Figure 4 As shown, the axis of the suction nozzle 44, the axis of the gripper 63, the axis of the camera lens of the camera assembly 92, and the axis of the guide tube 742 of the feeding area are on the same straight line to ensure the accuracy of feeding.

[0039] like Figure 5 and Figure 11 As shown, the first initial position 45 of the suction nozzle 44 is located above the central axis of the first feeding mechanism 3, and the first initial position 45 of the suction nozzle 44 is set as A0; the first material picking position 35 of the suction nozzle 44 is located at the LD material hole 34 of the LD material bin 33, and the first material picking position 35 is set as A1; the angle calibration position 93 is located above the LD vision positioning mechanism 9, and the angle calibration position 93 is set as A2. The second initial position 64 of the gripper 63 is located above the central axis of the second feeding mechanism 5, and the second initial position 64 of the gripper 63 is set as B0; the second material picking position 56 of the gripper 63 is located at the tube seat material hole 54 of the tube seat bin 531, and the second material picking position 56 is set as B1; the finished product placement position 57 is located at the finished product material hole 55 of the finished product bin 532, and the finished product placement position 57 is set as B2. B1 and B2 are relatively distributed on both sides of B0. The third initial position 76 of the rotary disk 71 is C0, which is the material feeding position of the suction nozzle 44 and the gripper 63, and also the position where the gripper 63 picks up the finished product; the pressing position 77 of the rotary disk 71 is C1, which is located between the lower pressing head 83 and the upper pressing head 85. The third initial position 76 and the pressing position 77 of the rotary disk 71 are each provided with a tube seat positioning hole 73.

[0040] The first initial position 45, the first material picking position 35, and the angle calibration position 93 of the suction nozzle 44 are aligned with the axis of the third initial position 76 of the rotating disk 71, the second initial position 64 of the gripper 63, the second material picking position 56, and the finished product placement position 57, in order to ensure the accuracy of material feeding.

[0041] It should be noted that the edge line of the tube seat positioning hole 73 at the third initial position 76 is parallel to the edge lines of the tube seat material hole 54 and the finished material hole 55 on the tube seat and the finished material bin 53, so there is no need to adjust the angle of the tube seat, which effectively improves the positioning efficiency and production cycle.

[0042] Example 2 In another typical embodiment of the present invention, a press-fitting method is proposed, comprising: Step S1: Material Retrieval The first X-axis moving assembly 41 and the first Z-axis moving assembly 42 operate to move along the X-axis and Z-axis respectively to transport the suction nozzle 44 from the first initial position 45 to the first material picking position 35 on the LD hopper 33; the negative pressure valve of the suction nozzle 44 opens to suck up the LD material 10, and then the suction nozzle 44 returns to the first initial position 45; The second X-axis moving assembly 61 and the second Z-axis moving assembly 62 operate to move along the X-axis and Z-axis respectively to transport the gripper 63 from the second initial position 64 to the second picking position 56. The vent valve of the gripper 63 is opened, supporting the inside of the tube seat to grab the tube seat, and then the gripper 63 is reset to the second initial position 64.

[0043] Step S2: LD Angle Calibration The first X-axis moving component 41 operates, causing the suction nozzle 44 to move along the X-axis to transport the sucked LD material 10 from the first initial position 45 to the angle calibration position 93. The LD vision positioning mechanism 9 acquires the shape image of the LD material 10 and uploads it to the controller. The controller calculates the angle deviation and converts the deviation into the angle and direction of the R-axis rotation of the R-axis rotating component 43 to perform angle calibration on the groove 101 on the LD material 10, so that the groove 101 is aligned with the guide positioning protrusion 7421 inside the conduit 742.

[0044] Step S3: LD feeding The first X-axis moving component 41 and the first Z-axis moving component 42 operate, causing the suction nozzle 44 to move along the X-axis and Z-axis respectively, so as to transport the LD material 10 from the angle calibration position 93 to the third initial position 76 of the rotating disk 71, so that the LD material 10 is directly above the tube seat positioning hole 73 at the third initial position 76. The lifting cylinder 753 extends and drives the bracket 751 to lift the guide tube 742. The negative pressure valve of the suction nozzle 44 closes, and the LD material 10 falls into the guide tube 742 by its own gravity. The guide positioning protrusion 7421 in the guide tube 742 cooperates with the groove 101 on the LD material 10 to ensure that the angle of the LD material 10 does not deviate when it falls. After the LD material 10 enters the guide tube 742, the lifting cylinder 753 closes, the bracket 751 falls back to its original position, the guide tube 742 resets under the action of the first reset spring 744, and the suction nozzle 44 returns to the first initial position 45.

[0045] Step S4: Discharge material from the tube seat The second X-axis moving assembly 61 and the second Z-axis moving assembly 62 operate to move along the X-axis and Z-axis respectively to transport the gripped tube seat from the second initial position 64 to the third initial position 76. The vent valve of the gripper 63 is closed, and the tube seat falls into the tube seat positioning hole 73 at the third initial position 76 by its own gravity. Under the limit of the tube seat positioning hole 73, the coaxiality of the tube seat and the LD material 10 is ensured, and the gripper 63 returns to the second initial position 64.

[0046] Step S4: Press-fit The rotary motor unit 72 rotates 180 degrees counterclockwise, transporting the pre-loaded LD material 10 and the tube seat to the pressing position 77. The lower pressing cylinder 82 drives the lower pressing head 83 to press down on the tube seat, and the upper pressing cylinder 84 drives the upper pressing head 85 to push the top tube 743 upward to press the LD material 10 in the guide tube 742 into the tube seat. Then, the upper pressing cylinder 84 and the lower pressing cylinder 82 retract to their original positions, thus completing the pressing.

[0047] Step S5: Material feeding The rotary motor unit 72 rotates 180 degrees counterclockwise to transport the pressed finished product to the third initial position 76. The gripper 63 moves from the second initial position 64 to the third initial position 76. The vent valve of the gripper 63 is opened to support the inside of the tube seat. Then, the finished product is moved to the finished product placement position 57 of the finished product bin 532. The finished product is placed into the finished product bin 532, and then the gripper 63 is reset.

[0048] Understandably, during the pressing process, the feeding of LD material 10 and the tube seat can be carried out simultaneously to improve work efficiency.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic pressure fitting system for TO-packaged laser diodes, comprising: The workbench (1) is characterized in that a pressing station (7) is provided on the workbench (1), a support (2) and a pressing mechanism (8) are provided on the front and rear sides of the pressing station (7), a first feeding mechanism (3) and a second feeding mechanism (5) are provided on the left and right sides of the pressing station (7), a first gripping mechanism (4) for gripping LD material (10) and a second gripping mechanism (6) for gripping tube seat and pressing finished product are provided on the support (2), and an LD vision positioning mechanism (9) is provided between the first gripping mechanism (4) and the pressing station (7), and the LD vision positioning mechanism (9) is used to assist in the positioning and adjustment of the plane angle of the LD material (10); The pressing station (7) includes a horizontally placed rotary table (71). The feeding area and pressing area of ​​the rotary table (71) are respectively provided with a square tube seat positioning hole (73). A set of pressing components (74) is coaxially provided directly below each tube seat positioning hole (73). The pressing component (74) includes a guide tube (742) movably disposed in the tube seat positioning hole (73). The upper end of the guide tube (742) is used to support the tube seat, and the inside of the guide tube (742) is used for the physical positioning of the LD material (10).

2. The automatic pressure-fitting system for TO-packaged laser diodes according to claim 1, characterized in that, The conduit (742) is vertically slidably disposed within the limiting frame (741), the limiting frame (741) is fixedly installed at the bottom of the rotating disk (71), the bottom end of the conduit (742) is fixedly connected to the limiting plate (746), the two ends of the limiting plate (746) extend outward from the limiting frame (741) for connecting the conduit lifting assembly (75), and the conduit (742) is fitted with a first reset spring (744); the conduit (742) is slidably disposed within the jacking tube (743) for jacking the LD material (10), the jacking tube (743) is coaxially disposed with the conduit (742), the bottom end of the jacking tube (743) extends downward through the limiting frame (741), and the jacking tube (743) is fitted with a second reset spring (745).

3. The automatic pressure-fitting system for TO-packaged laser diodes according to claim 2, characterized in that, A number of guide positioning protrusions (7421) are fixedly provided on the inner wall of the conduit (742) at circumferential intervals. The guide positioning protrusions (7421) extend along the axial direction of the conduit (742), and the guide positioning protrusions (7421) correspond one-to-one with the grooves (101) on the LD material (10). The top pipe (743) is provided with a relief groove (7431), and the relief groove (7431) corresponds one-to-one with the guide positioning protrusions (7421).

4. The automatic pressure-fitting system for TO-packaged laser diodes according to claim 2, characterized in that, The guide pipe lifting assembly (75) is located below the loading area of ​​the rotary table (71). The guide pipe lifting assembly (75) includes a bracket (751) and a lifting cylinder (753). The lifting cylinder (753) is vertically mounted on the workbench (1) via a first fixed frame (752). The bracket (751) is fixedly mounted on the telescopic end at the top of the lifting cylinder (753). The bracket (751) is used to cooperate with the two protruding ends of the limiting plate (746).

5. The automatic pressure-fitting system for TO-packaged laser diodes according to claim 1, characterized in that, The pressing mechanism (8) includes a second fixed frame (81), on which an upper pressing cylinder (84) and a lower pressing cylinder (82) are provided. The upper pressing cylinder (84) and the lower pressing cylinder (82) are arranged opposite to each other on the upper and lower sides of the pressing area of ​​the rotating disk (71), and the lower pressing cylinder (82) is located directly above the upper pressing cylinder (84).

6. The automatic pressure-fitting system for TO-packaged laser diodes according to claim 3, characterized in that, The first feeding mechanism (3) includes an LD hopper (33) that moves along the Y-axis. The LD hopper (33) is provided with several LD ​​material holes (34), and the LD material holes (34) are circular holes. The second feeding mechanism (5) includes a tube seat and a finished product hopper (53) that move along the Y-axis. The tube seat and the finished product hopper (53) include a heating type tube seat hopper (531) and a cooling type finished product hopper (532) that are arranged opposite to each other along the Y-axis. The tube seat hopper (531) is provided with several tube seat material holes (54), and the finished product hopper (532) is provided with several finished product material holes (55). The tube seat material holes (54) are square holes, and the finished product material holes (55) are stepped holes with an outer square and an inner circle. The LD material holes (34), tube seat material holes (54) and finished product material holes (55) are all arranged at equal intervals along the X-axis and Y-axis.

7. The automatic pressure-fitting system for TO-packaged laser diodes according to claim 6, characterized in that, The edge of the positioning hole (73) of the tube seat is parallel to the edge of the material hole (54) and the finished material hole (55) of the tube seat.

8. The automatic pressure-fitting system for TO-packaged laser diodes according to claim 6, characterized in that, The first gripping mechanism (4) includes a suction nozzle (44) capable of moving along the X-axis and Z-axis and rotating around the Z-axis. The second gripping mechanism (6) includes a gripper (63) capable of moving along the X-axis and Z-axis. The LD vision positioning mechanism (9) includes a camera assembly (92). The axis of the suction nozzle (44), the axis of the gripper (63), the lens axis of the camera assembly (92), and the axis of the feeding area guide tube (742) are on the same straight line.

9. The automatic pressure-fitting system for TO-packaged laser diodes according to claim 8, characterized in that, The initial position, material picking position and angle calibration position (93) of the suction nozzle (44) are on the same straight line as the axis of the tube seat positioning hole (73), the initial position, material picking position and finished product placement position (57) of the feed area of ​​the rotating disk (71).

10. A press-fit method, employing the automatic press-fit system for TO-packaged laser diodes as described in any one of claims 8-9, characterized in that, include: The suction nozzle (44) moves from the initial position to the LD hopper (33) to suck up the LD material (10). At the same time, the gripper (63) moves from the initial position to the tube seat hopper (531) to grab the tube seat. After the suction nozzle (44) and the gripper (63) have finished grabbing, they reset themselves. The suction nozzle (44) transfers the sucked LD material (10) to the LD vision positioning mechanism (9) to obtain the shape image of the LD material (10) and upload the calculated angle deviation. The suction nozzle (44) drives the LD material (10) to rotate and adjust according to the calculated angle and direction, so that the groove (101) on the LD material (10) is aligned with the guide positioning protrusion (7421) in the conduit (742). The suction nozzle (44) transfers the LD material (10) to the top of the tube seat positioning hole (73) in the feeding area of ​​the rotary disk (71). The guide tube lifting assembly (75) lifts the guide tube (742), and the suction nozzle (44) releases the LD material (10) so that it falls into the guide tube (742). The guide tube lifting assembly (75), the guide tube (742) and the suction nozzle (44) are then reset. The gripper (63) moves the tube seat to the position of the tube seat positioning hole (73) in the loading area of ​​the rotary table (71). The gripper (63) releases the tube seat so that it falls into the tube seat positioning hole (73) and is supported by the guide tube (742). The gripper (63) then resets. The rotating disk (71) rotates the pre-loaded LD material (10) and the pipe seat together to the pressing area. The pressing mechanism (8) presses down on the pipe seat. At the same time, the pressing mechanism (8) pushes the top pipe (743) upward to press the LD material (10) in the guide tube (742) into the pipe seat. After the pressing is completed, the pressing mechanism (8) resets. The rotary table (71) rotates the pressed finished product to the feeding area. The gripper (63) moves from the initial position to the feeding area, grabs the finished product and transfers it to the finished product warehouse (532), and then the gripper (63) resets.

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