Dispensing and patching mechanism with high-precision visual positioning

Abstract

The utility model discloses a kind of point glue patch mechanisms with high-precision visual positioning, the point glue patch mechanism includes pedestal, vertical rack, overhead vision mechanism, XYZ axis driving mechanism, suction patch tool mechanism, look-up camera mechanism and material moving platform. Among them, three vision systems are overhead camera+look-up camera+follow-up camera combined structure, work cooperatively, realize chip whole-process high-precision positioning;XYZ axis driving mechanism adopts linear motor, ensure motion accuracy;Pedestal is marble material, backplate is silicon-aluminum alloy vibration-absorbing material, improve equipment stability;Glue needle placing seat and look-up lens can be adapted to multiple specifications chips, enhance equipment versatility.The utility model solves the problems of low positioning accuracy, poor adaptability, insufficient stability and low efficiency of the existing patch machine, and is suitable for high-precision packaging process of semiconductor chip.

Description

Technical Field

[0001] This utility model relates to a chip mounter, specifically to a dispensing and mounting mechanism with high-precision visual positioning. Background Technology

[0002] In the current electronics manufacturing and precision machining industry, pick-and-place machines are core production equipment, and their placement accuracy directly affects the quality and performance of products. However, existing pick-and-place machines generally suffer from the following shortcomings: 1. Low positioning accuracy: Most pick-and-place machines use a single vision positioning device with a fixed installation angle. They can only take pictures and position the workpiece from a single direction, making it difficult to fully capture the position information of the workpiece. Especially for workpieces with slight offsets or irregular shapes, positioning deviations are prone to occur, resulting in the placement accuracy failing to meet the requirements of high-precision production. 2. Poor workpiece fixation stability: Traditional pick-and-place machines mostly use a fixed workpiece fixation structure, which cannot be flexibly adjusted according to workpieces of different sizes and shapes. During the workpiece conveying and placement process, problems such as workpiece displacement and shaking are prone to occur, which further affects the placement accuracy. 3. Insufficient equipment operational stability: The base of some pick-and-place machines is made of ordinary metal material, which is prone to deformation and vibration during long-term use, resulting in a decrease in the overall operational stability of the equipment, which in turn affects the motion accuracy of each drive mechanism and indirectly reduces the placement quality. 4. Low operating efficiency: Some pick-and-place machines have only a single adsorption area on their adsorption platform, which can only process one workpiece at a time. Furthermore, the coordination between vision positioning and workpiece conveying is poor, resulting in low operating efficiency of the equipment and making it difficult to meet the needs of large-scale mass production. In response to the problems existing in the above-mentioned technologies, there is an urgent need to develop an intelligent dispensing and placement machine with high-precision visual positioning, stable workpiece fixation, high equipment operation stability and high operating efficiency, so as to solve the technical bottlenecks currently faced by the placement machine industry. Summary of the Invention

[0003] The purpose of this invention is to provide a dispensing and bonding mechanism with high-precision visual positioning. By optimizing the layout of the vision system, improving the drive and support structure, and designing efficient adsorption components, the invention solves the problems of low positioning accuracy, poor adaptability, insufficient stability, and low efficiency of existing bonding machines.

[0004] To solve the above-mentioned technical problems, this utility model achieves the following solution: A dispensing and patching mechanism with high-precision visual positioning according to this utility model includes a horizontally arranged base and a vertical frame connected to the base. The dispensing and patching mechanism further includes: A top-view vision mechanism is installed on the front side of the base. It has a lifting platform, a power unit for driving the lifting platform to rise and fall, and a lens module installed on the lifting platform. The lens of the lens module is arranged downward. The XYZ axis drive mechanism is mounted on the lower mounting surface of the base; The suction tool mechanism is driven and connected to the XYZ axis drive mechanism. After being driven by the XYZ axis drive mechanism, the suction tool mechanism performs XYZ three-axis motion. The suction tool mechanism has a back plate fixed to the XYZ axis drive mechanism, and a chip nozzle system, a follow-up camera, and a glue needle placement seat arranged side by side and all facing downwards on the back plate. An upward-looking camera mechanism is provided on the vertical frame. The upward-looking camera mechanism has an upward-looking lens, a fine-tuning mechanism for finely adjusting the focal length of the upward-looking lens, and a vision processing unit. The vision processing unit is electrically connected to the upward-looking lens and the fine-tuning mechanism.

[0005] Furthermore, the base is a marble base.

[0006] Furthermore, the lifting platform is a cross-shaped ball bearing lifting platform.

[0007] Furthermore, the power unit is a lifting rod-shaped linear motor, and the drive shaft of the lifting rod-shaped linear motor is connected to the lifting platform facing upwards.

[0008] Furthermore, the XYZ axis drive mechanism includes: Y-axis mechanism fixed to the base; An X-axis mechanism is driven and connected to the Y-axis mechanism, and the Y-axis mechanism drives the X-axis mechanism to move along the Y-axis. The Z-axis mechanism is driven and connected to the X-axis mechanism. The Z-axis mechanism is equipped with a Z-axis moving platform. After being driven, the Z-axis mechanism moves along the X-axis, and the Z-axis moving platform is driven by the Z-axis mechanism to move along the Z-axis. The suction tool mechanism is mounted on the Z-axis moving platform.

[0009] Furthermore, the power source for the Y-axis mechanism, X-axis mechanism, and Z-axis mechanism is a linear motor.

[0010] Furthermore, the back plate is a vibration-absorbing back plate with vibration-resistant properties.

[0011] Furthermore, the upward-looking lens is a lens with multi-channel color light adjustment.

[0012] Furthermore, a material moving platform (6) is installed on the vertical frame (7) for loading and unloading materials.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model significantly improves positioning accuracy: it adopts a three-vision collaborative positioning scheme of "top view + bottom view + follow-up". The top view camera achieves initial positioning, the bottom view camera completes secondary calibration, and the follow-up camera dynamically fills in blind spots. With the help of a high-precision linear motor drive, the mounting accuracy can meet the micron-level requirements.

[0014] 2. This utility model has strong chip adaptability: the upward-looking lens supports multi-channel color light adjustment, the fine-tuning focus mechanism can adapt to chips of different sizes, and the glue needle placement seat is compatible with multiple styles of glue needles. Production switching of multiple specifications of chips can be achieved without frequent replacement of core components.

[0015] 3. This utility model has high equipment stability: the marble base suppresses vibration and deformation, and the vibration-absorbing back plate reduces local vibration, ensuring the stability of the equipment during long-term operation and reducing the installation deviation caused by vibration.

[0016] 4. This utility model has high operating efficiency: the follow-up camera and the drive mechanism work together to reduce positioning time; the chip suction nozzle and material platform improve workpiece processing efficiency and meet the needs of mass production. Attached Figure Description

[0017] Figure 1 This is a front view of the dispensing and patching mechanism of this utility model.

[0018] Figure 2 This is a top-view structural diagram of the vision mechanism of this utility model.

[0019] Figure 3 This is a structural diagram of the upward-looking camera mechanism of this utility model.

[0020] Figure 4 This is a structural diagram of the adhesive applicator mechanism of this utility model.

[0021] Figure 5 This is a structural diagram of the XYZ axis drive mechanism of this utility model.

[0022] The attached diagram is labeled as follows: Top-view vision mechanism 1, base 2, XYZ axis drive mechanism 3, suction tool mechanism 4, bottom-view camera mechanism 5, material moving platform 6, vertical frame 7, lens module 11, power unit 12, lifting platform 13, X-axis mechanism 31, Y-axis mechanism 32, Z-axis mechanism 33, back plate 41, glue needle placement seat 42, follow-up camera 43, chip suction nozzle system 44, bottom-view lens 51, fine-tuning focusing mechanism 52, vision processing unit 53. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Example 1: The specific structure of this utility model is as follows: Please refer to the appendix. Figure 1-5 The present invention discloses a dispensing and patching mechanism with high-precision visual positioning, comprising a horizontally arranged base 2 and a vertical frame 7 connected vertically to the base 2. The dispensing and patching mechanism further includes: A top-view vision mechanism 1 is installed on the front side of the base 2. It has a lifting platform 13, a power unit 12 for driving the lifting platform 13 to rise and fall, and a lens module 11 installed on the lifting platform 13. The lens of the lens module 11 is arranged facing downward. The XYZ axis drive mechanism 3 is mounted on the lower mounting surface of the base 2; The suction tool mechanism 4 is driven and connected to the XYZ axis drive mechanism 3. After being driven by the XYZ axis drive mechanism 3, the suction tool mechanism 4 performs XYZ three-axis motion. The suction tool mechanism 4 has a back plate 41 fixed to the XYZ axis drive mechanism 3, and chip nozzle system 44, follow camera 43, and glue needle placement seat 42 arranged side by side and all facing downward on the back plate 41. The upward-looking camera mechanism 5 is located on the vertical frame 7. The upward-looking camera mechanism 5 has an upward-looking lens 51, a fine-tuning focusing mechanism 52 that can finely adjust the focal length of the upward-looking lens 51, and a vision processing unit 53. The vision processing unit 53 is electrically connected to the upward-looking lens 51 and the fine-tuning focusing mechanism 52 respectively.

[0026] The base is a marble base.

[0027] The lifting platform 13 is a cross-shaped ball bearing lifting platform.

[0028] The power unit 12 is a lifting rod-shaped linear motor, and the drive shaft of the lifting rod-shaped linear motor is connected to the lifting platform 13 with its direction of upward.

[0029] The XYZ axis drive mechanism 3 includes: Y-axis mechanism 32 fixed to the base 2; The X-axis mechanism 31 is driven and connected to the Y-axis mechanism, and the Y-axis mechanism 32 drives the X-axis mechanism 31 to move along the Y-axis. The Z-axis mechanism 33 is driven and connected to the X-axis mechanism 31. The Z-axis mechanism 33 is provided with a Z-axis moving platform. After being driven, the Z-axis mechanism 33 moves along the X-axis, and the Z-axis moving platform is driven by the Z-axis mechanism 33 to move along the Z-axis. The suction tool mechanism 4 is installed on the Z-axis moving platform.

[0030] The power source for the Y-axis mechanism 32, X-axis mechanism 31 and Z-axis mechanism 33 is a linear motor.

[0031] The back plate 41 is a vibration-absorbing back plate with anti-vibration properties. Preferably, the vibration-absorbing back plate is made of silicon-aluminum alloy.

[0032] The upward-looking lens 51 is a lens with multi-channel color light adjustment.

[0033] The material moving platform 6 is installed on the vertical frame 7 and is used for loading and unloading materials. Example 2

[0034] The following is in conjunction with the appendix Figure 1-5 The working process of this utility model is described in detail below: Material loading and initial positioning: Material moving platform 6 transports the chip to be mounted to the designated pick-up station; Driven by the lifting rod linear motor 12 and the cross-shaped ball lifting platform 13, the lens module 11 of the top-view vision mechanism 1 is adjusted to the optimal shooting height, performs shooting positioning on the chip, and transmits the initial position data to the control system.

[0035] Chip Pickup and Secondary Calibration: The control system drives the XYZ axis drive mechanism 3, which in turn moves the suction tool mechanism 4 to above the pickup station; The chip suction nozzle system 44 uses negative pressure to adsorb the chip, and then the XYZ axis drive mechanism 3 drives the chip to move above the upward-looking camera mechanism 5; The upward-looking lens 51 adjusts the color light according to the chip material, and the fine-tuning focusing mechanism 52 adjusts the focal length to take a picture of the chip; the vision processing unit 53 analyzes the image, obtains the offset after the chip is picked up, and feeds back the calibration data to the control system to correct the movement trajectory of the suction tool mechanism 4.

[0036] Dispensing and mounting: The control system drives the XYZ axis drive mechanism 3 according to the calibration data, which moves the suction tool mechanism 4 to the dispensing station; the glue needle in the glue needle holder 42 completes the dispensing action; The follow-up camera 43 captures images of the mounting area in real time, dynamically corrects positional deviations, and ensures that the chip is accurately mounted to the target position. The chip suction nozzle system 44 releases negative pressure to complete the placement. Then, the XYZ axis drive mechanism 3 drives the suction tool mechanism 4 to reset, ready for the next pick-up.

[0037] Material feeding and circulation: The material moving platform 6 transfers the finished workpiece to the next process, while simultaneously conveying new chips to be mounted to the pick-up station, and the equipment enters the next work cycle.

[0038] Throughout the above process, the marble base 2 and the back plate 41 suppress vibrations to ensure the motion accuracy of each mechanism; the collaboration between the three vision system and the XYZ axis drive mechanism 3 achieves high-precision control of the entire process of "positioning-pick-calibration-mounting".

[0039] In summary, this invention significantly improves positioning accuracy by employing a three-vision collaborative positioning scheme: a top-view camera, an under-view camera, and a follow-up camera. The top-view camera achieves initial positioning, the under-view camera completes secondary calibration, and the follow-up camera dynamically fills in blind spots. Combined with a high-precision linear motor drive, the mounting accuracy can meet the micron-level requirements.

[0040] This utility model has strong chip adaptability: the upward-looking lens supports multi-channel color light adjustment, the micro-focusing mechanism can adapt to chips of different sizes, and the glue needle placement seat is compatible with multiple styles of glue needles. It can realize the production switching of multiple specifications of chips without frequent replacement of core components.

[0041] This utility model features high equipment stability: the marble base suppresses vibration and deformation, and the vibration-absorbing back plate reduces local vibration, ensuring the stability of the equipment during long-term operation and reducing mounting deviations caused by vibration.

[0042] This invention boasts high operational efficiency: the servo camera and drive mechanism work together to reduce positioning time; the chip suction nozzle and material platform enhance workpiece processing efficiency and meet the needs of mass production.

[0043] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A dispensing and patching mechanism with high-precision visual positioning, comprising a horizontally arranged base (2) and a vertical frame (7) vertically connected to the base (2), characterized in that, The dispensing and patching mechanism also includes: A top-view vision mechanism (1) is installed on the front side of the base (2), and has a lifting platform (13), a power unit (12) for driving the lifting platform (13) to rise and fall, and a lens module (11) installed on the lifting platform (13), with the lens of the lens module (11) facing downward. XYZ axis drive mechanism (3) is installed on the lower mounting surface of the base (2); The suction tool mechanism (4) is driven and connected to the XYZ axis drive mechanism (3). After being driven by the XYZ axis drive mechanism (3), the suction tool mechanism (4) performs XYZ three-axis motion. The suction tool mechanism (4) has a back plate (41) fixed to the XYZ axis drive mechanism (3), and a chip nozzle system (44), a follow-up camera (43), and a glue needle placement seat (42) arranged side by side and facing downwards on the back plate (41). An upward-looking camera mechanism (5) is provided on the vertical frame (7). The upward-looking camera mechanism (5) has an upward-looking lens (51), a fine-tuning focusing mechanism (52) that can finely adjust the focal length of the upward-looking lens (51), and a visual processing unit (53). The visual processing unit (53) is electrically connected to the upward-looking lens (51) and the fine-tuning focusing mechanism (52). The material moving platform (6) is installed on the vertical frame (7) and is used for loading and unloading materials.

2. The dispensing and patching mechanism with high-precision visual positioning according to claim 1, characterized in that, The base is a marble base.

3. The dispensing and patching mechanism with high-precision visual positioning according to claim 1, characterized in that, The lifting platform (13) is a cross-shaped ball bearing lifting platform.

4. The dispensing and patching mechanism with high-precision visual positioning according to claim 1, characterized in that, The power unit (12) is a lifting rod-shaped linear motor, and the drive shaft of the lifting rod-shaped linear motor is connected to the lifting platform (13) with its direction upward.

5. The dispensing and patching mechanism with high-precision visual positioning according to claim 1, characterized in that, The XYZ axis drive mechanism (3) includes: Y-axis mechanism (32) fixed to the base (2); The X-axis mechanism (31) is driven and connected to the Y-axis mechanism, and the Y-axis mechanism (32) drives the X-axis mechanism (31) to move in the Y-axis direction; The Z-axis mechanism (33) is driven and connected to the X-axis mechanism (31). The Z-axis mechanism (33) is provided with a Z-axis moving platform. After being driven, the Z-axis mechanism (33) moves along the X-axis. The Z-axis moving platform is driven by the Z-axis mechanism (33) to move along the Z-axis. The suction tool mechanism (4) is installed on the Z-axis moving platform.

6. The dispensing and patching mechanism with high-precision visual positioning according to claim 5, characterized in that, The power source for the Y-axis mechanism (32), X-axis mechanism (31) and Z-axis mechanism (33) is a linear motor.

7. The dispensing and patching mechanism with high-precision visual positioning according to claim 1, characterized in that, The back plate (41) is a vibration-absorbing back plate with vibration-resistant properties.

8. The dispensing and patching mechanism with high-precision visual positioning according to claim 1, characterized in that, The upward-looking lens (51) is a lens with multi-channel color light adjustment.

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