A laser unsealing device

Abstract

This utility model discloses a laser opening device, comprising a machine base and a machine cover, a lifting module, a laser detection module, a movable platform, and a cleaning and dust collection mechanism mounted on the machine base. The laser detection module is mounted on the lifting module via a connecting plate. The cleaning and dust collection mechanism is located below the laser detection module and includes a dust collection hood, a blower head, a dust extraction head, and a lifting cylinder. The blower head and the dust extraction head are respectively located on opposite sides of the dust collection hood, with the dust extraction port of the dust extraction head communicating with the interior of the dust collection hood. The dust collection hood is mounted on the connecting plate via the lifting cylinder. The movable platform is located below the laser detection module. The top and bottom of the dust collection hood have upper and lower openings, respectively. The lower opening is larger than the upper opening, and the lower opening is larger than the size of the product platform on the movable platform. By timely and effectively cleaning up dust, the cleanliness and clarity of the working area are ensured, thereby improving the accuracy and reliability of the detection and helping to guarantee product quality and cutting precision.

Description

Technical Field

[0001] This utility model relates to the field of lasers, and in particular to a laser opening device. Background Technology

[0002] With the rapid development of microelectronics packaging, precision sensor manufacturing, and other fields, higher demands are being placed on chip-level packaging and unpacking technology. Traditional mechanical unpacking methods suffer from problems such as high stress damage and low precision, while laser unpacking technology, with its advantages of non-contact and high precision, is gradually becoming mainstream. The working principle of laser unpacking technology is that a focused pulsed laser beam acts on the encapsulation material of the chip. The high temperature generated by the laser beam cutting causes the encapsulation material to vaporize, exposing the bonding wires or wafer; this process is also called chip unpacking. Currently, there are still some problems in the practical application of this type of laser unpacking equipment. For example, the cleaning effect of other waste gases and waste such as gases, dust, and debris generated during the unpacking process is poor, which affects the processing accuracy to a certain extent. Moreover, untimely or incomplete cleaning of waste gases and dust will also deteriorate the processing environment, increasing the overall cleaning and maintenance frequency and cost of the equipment. In addition, the human-machine interface has a complex structure, high cost, and inconvenient operation. Utility Model Content

[0003] In view of the above, this utility model provides a laser unpacking device that, by effectively and promptly cleaning up fumes during the cutting process, ensures the cleanliness and clarity of the working areas of the laser cutting module and the vision inspection module. This allows the vision inspection module to more accurately acquire images of the product on the product platform and transmit clear images to the computer, facilitating operator observation and timely problem detection. This improves the accuracy and reliability of the inspection, helping to ensure product quality and cutting precision. The specific technical solution is as follows.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a laser opening device, comprising a machine base and a machine cover, a lifting module, a laser detection module, a moving platform, and a cleaning and dust collection mechanism disposed on the machine base. The laser detection module is disposed on the lifting module via a connecting plate and includes a laser cutting module and a vision inspection module. The cleaning and dust collection mechanism is disposed below the laser detection module and includes a dust collection hood, a blower head, a dust extraction head, and a lifting cylinder. The blower head and the dust extraction head are respectively disposed on opposite sides of the dust collection hood. The dust extraction port of the dust extraction head communicates with the interior of the dust collection hood. The dust collection hood is disposed on the connecting plate via the lifting cylinder. The moving platform is disposed below the laser detection module. The top and bottom of the dust collection hood are respectively provided with an upper opening and a lower opening. The size of the lower opening is larger than the size of the upper opening and larger than the size of the product platform on the moving platform, so that when the dust collection hood descends, it avoids the product platform and covers it.

[0005] As a further improvement of this utility model, the blower head is strip-shaped, and the length of the blower head and the dust extraction port is equal to the side width of the dust extraction hood.

[0006] As a further improvement of this utility model, a reflective cavity is provided between the laser cutting module and the vision inspection module. The laser cutting module is located above the reflective cavity, and the vision inspection module is located on one side of the reflective cavity. A reflector is provided inside the reflective cavity to reflect light so that the vision inspection module can obtain the product image on the product platform below. The laser from the laser cutting module passes directly through the reflector from above to the product platform below. Multiple strip light sources are provided below the reflective cavity, and one strip light source is provided below each edge of the reflective cavity.

[0007] As a further improvement of the present invention, the laser cutting module includes a laser, a laser coupler, a laser galvanometer, and a laser cutting head, and the visual inspection module includes an inspection camera, a lens, and a bracket, wherein the inspection camera and the lens are mounted on a transflective cavity by the bracket.

[0008] As a further improvement of the present invention, the mobile platform further includes an X-axis moving module and a Y-axis moving module. The X-axis moving module is disposed on the machine base, the Y-axis moving module is disposed on the X-axis moving module, and the product platform is disposed on the Y-axis moving module. The X-axis moving module and the Y-axis moving module drive the horizontal movement in the lateral and longitudinal directions.

[0009] As a further improvement of this utility model, the product platform is provided with a baffle strip on the top edge, and multiple positioning holes and mounting screw holes are provided around the product platform. The product platform is an adsorption platform.

[0010] As a further improvement of this utility model, the product platform is provided with two adsorption chambers, each of which is equipped with an independent switch valve.

[0011] As a further improvement of this utility model, the machine cover has side doors on both sides, and a lifting door is opened on the side facing the laser detection module. A handle is provided at the bottom of the outer surface of the lifting door.

[0012] As a further improvement of the present invention, the lifting door includes a central transparent glass and a frame surrounding the transparent glass. The frames on both sides are slidably connected to the cover. Connecting blocks are symmetrically arranged on the bottom inner side of the frames on both sides, and steel wire ropes are connected to the connecting blocks.

[0013] As a further improvement of this utility model, the top corner of the machine cover is provided with a guide wheel, the wire rope is arranged along the guide wheel, and a counterweight is connected to the movable end. The counterweight is located on the opposite side of the lifting door.

[0014] This utility model's laser opening device features a height-adjustable cleaning and dust-collecting mechanism. The blower head and dust extraction head are positioned on either side of the dust collection hood. The blower creates a directional airflow that pushes dust towards the extraction port. Combined with the negative pressure adsorption of the dust collector, it achieves a dual "push + suction" effect, avoiding dead-angle residue that may occur with traditional single-suction methods. Furthermore, the length of the blower head and extraction port is equal to the width of the dust collection hood's sides, ensuring uniform coverage of the entire cutting area without blind spots. This is particularly suitable for large-sized products or high-precision cutting scenarios, achieving simultaneous blowing and suction, uniform coverage, and efficient dust removal. Simultaneously, the dust collection hood is mounted on a connecting plate via a lifting cylinder, rising and falling synchronously with the laser detection module. When cutting at different heights, the dust collection hood can promptly follow the movement and can also rise and fall independently. This allows for more flexible and precise adjustment of the dust collection hood's position based on the actual cutting situation and the height of the product platform, achieving optimal dust collection position and effect. During cutting, it lowers to enclose the product platform, forming a surrounding space to prevent dust from spilling out haphazardly. After completion, it automatically rises, facilitating quick product loading and unloading by operators and better adapting to cutting needs. In addition, this solution includes a lifting door, which, through its counterweight balance and transparent visibility design, offers significant advantages in terms of ease of operation, safety, and cost control. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the laser opening device of this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the laser opening device of this utility model (with the machine cover removed).

[0017] Figure 3 This is a schematic diagram of a cleaning and vacuuming mechanism.

[0018] Figure 4 This is an exploded view of the product platform structure.

[0019] Figure 5 This is a schematic diagram of the connection structure of the lifting door, wire rope, and counterweight. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] refer to Figures 1-2 A laser-driven opening device includes a machine base 1 and a machine cover 2, a lifting module 3, a laser detection module, a movable platform 5, and a cleaning and dust collection mechanism 4 mounted on the machine base 1. The laser detection module is mounted on the lifting module 3 via a connecting plate 31 and includes a laser cutting module 6 and a vision inspection module 7. The lifting module 3 can be either an existing lead screw motor linear module or a linear motor module to drive the laser detection module and the cleaning and dust collection mechanism 4 to move up and down. The cleaning and dust collection mechanism 4 is located below the laser detection module and includes a dust collection hood 41, a blower head 42, a dust extraction head 43, and a lifting cylinder 44. The blower head 42 and the dust extraction head 43 are respectively located on opposite sides of the dust collection hood 41, and the dust extraction port 431 of the dust extraction head 43 communicates with the interior of the dust collection hood 41. The blower head 43 is connected to a blower via a pipe to provide airflow, and the dust extraction head 43 is connected to an external vacuum cleaner via a pipe to provide suction. The vacuum cleaner is existing technology and will not be described in detail. The blower head 42 blows air into the dust collection hood 41 and onto the opposite dust extraction head 43. The dust extraction head 43 draws air and dust from inside the dust collection hood 41, achieving a better effect by combining blowing and suction simultaneously. The dust collection hood 41 is mounted on the connecting plate 31 via a lifting cylinder 44, allowing it to rise and fall synchronously with the laser detection module while also rising and falling independently. The movable platform 5 is located below the laser detection module. The top and bottom of the dust collection hood 41 have an upper opening 411 and a lower opening 412, respectively. The lower opening 412 is larger than the upper opening 411 and larger than the product platform 51 on the movable platform 5, so that the dust collection hood 41 can avoid the product platform 51 and enclose it when it descends.

[0024] Furthermore, the blower head 43 is strip-shaped, with its width covering the entire side of the dust collection hood 41, meaning its length is equal to the width of the side of the dust collection hood 41. This ensures that when blowing air inside the dust collection hood 41, the airflow is evenly directed from one side to the other, covering the entire surface of the product platform 51 without any dead corners. At the same time, the length of the dust extraction port 431 on the side of the dust collection hood 41 is also equal to the width of the side. Combined with the opposite-side blowing, it provides comprehensive and rapid dust extraction, making it especially suitable for large-sized products or high-precision cutting scenarios.

[0025] Specifically, the laser cutting module 6 includes a laser (not shown in the figure, but this does not affect the understanding), a laser coupler 61, a laser galvanometer 62, and a laser cutting head 63. The laser can be selected as appropriate and directly mounted on the machine base. It is connected to the laser coupler 61 via optical fiber, such as a 20W IPG fiber laser. The laser coupler 61 efficiently couples the laser generated by the laser to the laser galvanometer 62. The laser cutting head 63 is the processing objective lens, used to focus the laser emitted from the laser galvanometer 62 to perform laser cutting on the product. The laser from the laser cutting head 63 hits the upper surface of the product to open the window of the set size. The visual inspection module 7 includes an inspection camera 71, a lens 72, and a bracket 73. A reflective cavity 8 is provided between the laser cutting module 6 and the visual inspection module 7. The laser cutting module 6 is located above the reflective cavity 8, and the visual inspection module 7 is located on one side of the reflective cavity 8. That is, the inspection camera 71 and the lens 72 are mounted on one side of the reflective cavity 8 by the bracket 73, and the reflective cavity 8 is mounted on the connecting plate 31. A reflector is provided inside the reflective cavity 8 to reflect light so that the visual inspection module 7 can acquire the product image on the product stage 51 below. The laser from the laser cutting module 6 passes directly through the reflector from above to the product stage 51 below to cut the product cover plate. The reflector has high transmittance (>95%) at a laser wavelength of 1064nm, ensuring that the laser energy is efficiently transmitted to the product surface for cutting, and high reflectance (>90%) in the camera's photosensitive wavelength range, such as visible light 500-700nm or near-infrared 850nm, guiding the reflected light from the product surface to the inspection camera.

[0026] In addition, multiple strip light sources 9 are provided below the transflective cavity 8, and one strip light source 9 is provided below each edge of the transflective cavity 8 to provide sufficient light for camera detection. The upper opening 411 at the top of the dust hood 41 is surrounded by a rim 413. The upper opening 411 is slightly larger than the area enclosed by the transflective cavity 8 and the strip light sources 9 above, so that the dust hood 41 can avoid the structure above when it rises. The rim 413 can also further prevent smoke and dust from overflowing upwards during cutting and dust suction.

[0027] When the laser begins cutting and opening the product cover, the dust hood 41, driven by the lifting cylinder 44, descends to surround the product above the product platform 51. Simultaneous suction and blowing activate, efficiently cleaning up dust and smoke as it vaporizes during cutting, preventing spillage and providing a clearer view for the inspection camera 71. This also makes it easier for operators to observe the images transmitted to the computer, allowing for timely detection of operational problems. Furthermore, the product surface and operating platform are cleaner after opening. After cutting, the dust hood 41 automatically rises, revealing the product platform 51 and the opened product for removal.

[0028] Furthermore, the movable platform 5 also includes an X-axis moving module 52 and a Y-axis moving module 53. The X-axis moving module 52 is mounted on the machine base, and the Y-axis moving module 53 is mounted on the X-axis moving module 52. The product platform 51 is mounted on the Y-axis moving module 53, and is driven by the X-axis moving module 52 and the Y-axis moving module 53 to perform horizontal movement in the lateral and longitudinal directions. The X-axis moving module 52 and the Y-axis moving module 53 can be selected from existing lead screw motor linear modules or linear motor modules.

[0029] The top edge of the product platform 51 is equipped with a stop bar 511 for limiting and blocking. Multiple positioning holes 512 and mounting screw holes 513 are provided around the product platform 51 to facilitate the installation of product fixtures. The product platform 51 is an adsorption platform, with two adsorption chambers 514 separated within it. Each adsorption chamber 514 has an independent on / off valve 515, which is connected to a vacuum pump via a pipeline. Negative pressure is generated to provide adsorption force. For small-sized products that only require half or less of the area of ​​the product platform 51, only one on / off valve 515 and one adsorption chamber 514 can be opened, providing adsorption force to half of the adsorption platform. For larger products, both valves can be used simultaneously.

[0030] Furthermore, the machine cover 2 has side doors 21 on both sides, and a lifting door 22 on the side facing the laser detection module, facilitating observation of the internal operation status and allowing for manual operation after cutting has stopped. A handle 23 is provided at the bottom of the outer surface of the lifting door 22 for manual lifting, and the lifting height can be controlled according to the operator's height and habits, making it easy to open and close. The lifting door 22 includes a central transparent glass 221 and a frame 222 surrounding the transparent glass 221. The two side frames 22 are slidably connected to the machine cover 2, and symmetrical connecting blocks 24 are provided on the bottom inner sides of the two side frames 22, with steel wire ropes 25 connected to the connecting blocks 24. Guide wheels 26 are provided at the top corners of the machine cover 2, and the steel wire ropes 25 are arranged along the guide wheels, with a counterweight 27 connected to the movable end. The counterweight 27 is located on the opposite side of the lifting door. The weight of the counterweight 27 should match the weight of the lifting door 22 to maintain balance during lifting, allowing the operator to easily control the door's movement with minimal force. Meanwhile, the material of counterweight 27 should be selected to be corrosion-resistant and not easily deformed in order to ensure its long-term stable and reliable performance.

[0031] Furthermore, the above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of this specification should be based on those skilled in the art. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A laser unsealing device, characterized by: The system includes a machine base and a machine cover, a lifting module, a laser detection module, a moving platform, and a cleaning and dust collection mechanism mounted on the machine base. The laser detection module, which is mounted on the lifting module via a connecting plate, includes a laser cutting module and a vision inspection module. The cleaning and dust collection mechanism, located below the laser detection module, includes a dust collection hood, a blower head, a dust extraction head, and a lifting cylinder. The blower head and the dust extraction head are located on opposite sides of the dust collection hood, with the dust extraction port of the dust extraction head communicating with the interior of the dust collection hood. The dust collection hood is mounted on the connecting plate via the lifting cylinder. The moving platform is located below the laser detection module. The top and bottom of the dust collection hood have an upper opening and a lower opening, respectively. The size of the lower opening is larger than the size of the upper opening and larger than the size of the product platform on the moving platform, so that the dust collection hood can avoid the product platform and enclose it when it descends.

2. The laser unsealing device of claim 1, wherein: The blower head is strip-shaped, and the length of the blower head and the dust extraction port is equal to the side width of the dust collection hood.

3. The laser unsealing device of claim 1, wherein: A reflective cavity is provided between the laser cutting module and the vision inspection module. The laser cutting module is located above the reflective cavity, and the vision inspection module is located on one side of the reflective cavity. A reflector is provided inside the reflective cavity to reflect light so that the vision inspection module can acquire the product image on the product platform below. The laser from the laser cutting module passes directly through the reflector from above to the product platform below. Multiple strip light sources are provided below the reflective cavity, and one strip light source is provided below each edge of the reflective cavity.

4. The laser unsealing device of claim 3, wherein: The laser cutting module includes a laser, a laser coupler, a laser galvanometer, and a laser cutting head. The visual inspection module includes an inspection camera, a lens, and a bracket. The inspection camera and the lens are mounted on a transflective cavity by the bracket.

5. The laser unsealing device of claim 1, wherein: The mobile platform also includes an X-axis moving module and a Y-axis moving module. The X-axis moving module is mounted on the machine base, the Y-axis moving module is mounted on the X-axis moving module, and the product platform is mounted on the Y-axis moving module. The X-axis moving module and the Y-axis moving module drive the horizontal movement in the lateral and longitudinal directions.

6. The laser opening device according to claim 4, characterized in that: The product platform has a baffle strip on the top edge, and multiple positioning holes and mounting screw holes are provided around the product platform. The product platform is an adsorption platform.

7. The laser unsealing device of claim 6, wherein: The product platform is divided into two adsorption chambers, each with an independent on / off valve.

8. The laser unsealing device of any of claims 1-7, wherein: The machine cover has side doors on both sides, and a lifting door is opened on the side facing the laser detection module. A handle is provided at the bottom of the outer surface of the lifting door.

9. The laser opening device according to claim 8, characterized in that: The lifting door includes a central transparent glass panel and a frame surrounding the transparent glass panel. The frame panels on both sides are slidably connected to the cover. Connecting blocks are symmetrically arranged on the bottom inner side of the frame panels on both sides, and steel wire ropes are connected to the connecting blocks.

10. The laser unsealing device of claim 9, wherein: The top corner of the machine cover is provided with a guide wheel, the steel wire rope is arranged along the guide wheel, and a counterweight is connected to the movable end. The counterweight is located on the opposite side of the lifting door.

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