A sorting ejector pin glue residue processing device

Abstract

The utility model belongs to LED chip technical field discloses a sorting ejector pin residual glue processing device, including slide rail, crystal grain adsorption mechanism, translation electric cylinder, the lower part one end of slide rail is connected translation electric cylinder, translation electric cylinder connects crystal grain adsorption mechanism, crystal grain adsorption mechanism and slide rail sliding connection, the below of slide rail is equipped with work table, and the first loading platform, the glue removing liquid groove, the water tank, the hot air blowing mechanism and the second loading platform are sequentially equipped on work table along the length direction of slide rail. The utility model utilizes crystal grain adsorption mechanism to carry out adsorption transfer to the crystal grain on the original blue film carrier, sequentially after the glue removing liquid immersion, water flushing, hot air drying treatment, shifts to the new blue film carrier, can effectively remove the ejector pin residual glue attached to the back of crystal grain, avoids the abnormal crystal grain that has residual glue to flow to the client and causes the package anomaly.

Description

Technical Field

[0001] This utility model belongs to the field of LED chip technology, specifically relating to a sorting pin residual adhesive treatment device. Background Technology

[0002] In existing sorting machines, after the ejector pin breaks through the blue film, blue film residue may remain at the pin tip. This residue can then adhere to the back of the die during ejection, causing misalignment and unevenness in the die arrangement after bonding, leading to die failure or abnormal wire bonding at the packaging end. Currently, ejector pin residue can only be removed by die casting, but some stubborn residues cannot be removed completely or are not completely removed by this method, posing a potential hazard when they reach the customer. Therefore, there is an urgent need for an auxiliary fixture that can effectively remove ejector pin residue from the back of the die. Utility Model Content

[0003] This invention addresses the shortcomings of the prior art by providing a device for treating residual adhesive on sorting pins. The device removes residual adhesive from the back of the pins by adsorbing the binned crystals as a whole and then sequentially removing the adhesive, cleaning, and drying them before transferring them to a new blue film.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A sorting pin residual adhesive treatment device includes a slide rail, a crystal adsorption mechanism, and a translation electric cylinder. The lower end of the slide rail is connected to the translation electric cylinder, and the translation electric cylinder is connected to the crystal adsorption mechanism. The crystal adsorption mechanism is slidably connected to the slide rail. A worktable is provided below the slide rail. The worktable is provided with a first platform, an adhesive removal liquid tank, a clean water tank, a hot air blowing mechanism, and a second platform in sequence along the length of the slide rail.

[0006] Preferably, the grain adsorption mechanism includes a slider, a lifting electric cylinder, a clamping assembly, an adsorption platform, and a vacuum generator. The slider is slidably connected to a slide rail, the slider is connected to the lifting electric cylinder, the lifting electric cylinder is connected to the clamping assembly, the clamping assembly is connected to the adsorption platform, and the bottom of the adsorption platform is provided with multiple suction nozzles, each of which is connected to the vacuum generator through a vacuum pipe.

[0007] Preferably, the clamping assembly includes a base and two U-shaped claws. The two U-shaped claws are symmetrically distributed on both sides of the base. Each U-shaped claw is rotatably connected to the base via a rotating shaft. The adsorption platform is pressed on the two U-shaped claws, and the bottom of the adsorption platform is provided with a positioning groove that cooperates with the U-shaped claws.

[0008] Preferably, the U-shaped claw is provided with a positioning hole, and a positioning screw is threaded into the positioning hole, and the positioning screw is threaded into the base.

[0009] Preferably, each of the vacuum pipes is equipped with a flow meter and a solenoid valve.

[0010] Preferably, an inverted L-shaped partition is provided on one side of the clear water tank, forming a stepped cavity inside the clear water tank. An overflow baffle is provided on the upper part of the inverted L-shaped partition. The overflow baffle is located at the stepped surface of the stepped cavity, and its upper end face is lower than the upper end face of the side wall of the clear water tank.

[0011] Preferably, both the glue removal tank and the clear water tank are equipped with inlet pipes and outlet pipes, and valves are provided on the inlet pipes and outlet pipes.

[0012] Preferably, the hot air blowing mechanism includes a blower box, with multiple air outlets evenly distributed on the upper surface of the blower box, and a hot air inlet pipe connected to the lower part of the blower box.

[0013] Preferably, each of the air outlets is provided with a funnel-shaped air diffuser.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention utilizes a grain adsorption mechanism to adsorb and transfer the grains on the original blue film carrier. After being soaked in a desmearing solution, rinsed with clean water, and dried with hot air, the grains are transferred to a new blue film carrier. This effectively removes residual adhesive from the ejector pins attached to the back of the grains, preventing abnormal grains with residual adhesive from flowing out to the customer and causing packaging abnormalities. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the clamping component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the clear water tank structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the heat exchanger of this utility model;

[0021] Figure 5 This is a schematic diagram of the glue removal process of this utility model;

[0022] In the diagram: 1. Slide rail, 2. Electric cylinder for translation, 3. Worktable, 4. First platform, 5. Adhesive remover tank, 6. Clean water tank, 7. Hot air blower mechanism, 701. Air box, 702. Air outlet, 703. Hot air inlet pipe, 704. Trumpet-shaped diffuser, 8. Second platform, 9. Slider, 10. Electric cylinder for lifting, 11. Clamping assembly, 1101. Base, 1102. U-shaped lifting claw, 1103. Rotating shaft, 1104. Positioning hole, 1105. Positioning screw, 12. Adsorption platform, 13. Vacuum generator, 14. Suction nozzle, 15. Vacuum pipe, 16. Inverted L-shaped partition, 17. Stepped cavity, 18. Overflow baffle, 19. Liquid inlet pipe, 20. Liquid outlet pipe, 21. Valve. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] like Figure 1As shown, a sorting pin residual adhesive treatment device includes a slide rail 1, a grain adsorption mechanism, a translation electric cylinder 2, and a controller. The lower end of the slide rail is connected to the translation electric cylinder, which is connected to the grain adsorption mechanism. The grain adsorption mechanism is slidably connected to the slide rail. The translation electric cylinder provides power to the grain adsorption mechanism and controls the horizontal position of the grain adsorption mechanism to facilitate the removal of adhesive from the adsorbed grains. A worktable 3 is located below the slide rail. Along the length of the slide rail, a first platform 4, a descaling solution tank 5, a clean water tank 6, a hot air blowing mechanism 7, and a second platform 8 are sequentially arranged on the worktable. A grain adsorption mechanism is used to bond the binned wafers located on the first platform. Vacuum negative pressure is used to adsorb the grains on the wafers, transferring them first to the descaling solution tank. The descaling solution softens the residual blue film on the back of the grains, allowing them to partially or completely detach. Then, the grains are transferred to the clean water tank and rinsed with flowing clean water to obtain clean grains. They are then transferred directly above the hot air blowing mechanism for drying with hot air. Finally, the grains are transferred to the empty blue film on the second platform. The controller is a PLC controller, electrically connected to the translational electric cylinder and the grain adsorption mechanism. In this embodiment, acetone (the solvent can be selected according to actual needs) is used as the descaling solution to soften the residual adhesive, reduce its stickiness, and facilitate peeling.

[0027] The grain adsorption mechanism includes a slider 9, a lifting electric cylinder 10, a clamping assembly 11, an adsorption platform 12, and a vacuum generator 13. The slider is slidably connected to a slide rail, the slider is connected to the lifting electric cylinder, the lifting electric cylinder is connected to the clamping assembly, and the clamping assembly is connected to the adsorption platform. The clamping assembly includes a base 1101 and two U-shaped claws 1102. The two U-shaped claws are symmetrically distributed on both sides of the base. Each U-shaped claw is rotatably connected to the base via a rotating shaft 1103. The adsorption platform is pressed against the two U-shaped claws, and the bottom of the adsorption platform is provided with a positioning groove (not shown in the figure) that mates with the U-shaped claws, facilitating the assembly and disassembly of the adsorption platform and the clamping assembly. The positioning groove also improves the stability of the connection structure. The lower part of the U-shaped claw is embedded in the positioning groove, and the U-shaped claw is provided with a positioning hole 1104. A positioning screw 1105 is threaded into the positioning hole and threaded into the base, facilitating the fixing of the U-shaped claw. The bottom of the adsorption platform is provided with multiple suction nozzles 14. Each suction nozzle is connected to a vacuum generator via vacuum pipe 15. A lifting electric cylinder controls the lifting and lowering movement of the adsorption platform. The vacuum generator creates a vacuum, which acts on the platform containing multiple suction nozzles, giving it a strong vacuum force. When the lifting electric cylinder drives the adsorption platform to descend and adhere to the wafer on the first platform for a certain period (the distance the adsorption platform needs to move to just make contact with the wafer on the first platform is pre-set), the suction nozzle can adsorb the wafer. Each vacuum pipe is equipped with a flow meter and a solenoid valve (not shown in the figure). Both the flow meter and the solenoid valve are connected to a PLC controller. The flow rate value determines whether each suction nozzle has a wafer attached. Vacuum pipes connected to nozzles that are not in contact with wafers are closed by the solenoid valve (channels that still have vacuum suction after moving to a preset distance are considered not in contact with wafers), preventing the desiccant or water from being sucked into the vacuum generator during the desiccant and cleaning process, which could cause equipment malfunction. When the lifting electric cylinder drives the adsorption platform to rise, the wafer is separated from the blue film for the next desiccant process. In this embodiment, the adhesive remover is an organic solution, while the adsorption platform is made of metal, and the two will not react chemically.

[0028] Combination Figure 1 and Figure 2 As shown, an inverted L-shaped baffle 16 is provided on one side of the clear water tank, forming a stepped cavity 17 inside the clear water tank. An overflow baffle 18 is provided on the upper part of the inverted L-shaped baffle. The overflow baffle is located at the stepped surface of the stepped cavity, and its upper end face is lower than the upper end face of the side wall of the clear water tank. Both the adhesive removal tank and the clear water tank are provided with inlet pipes 19 and outlet pipes 20. Valves 21 are provided on the inlet pipes and outlet pipes to facilitate the injection and drainage of the solution inside the adhesive removal tank and the clear water tank. Clear water continuously enters the clear water tank through the inlet pipe. The adsorption platform carrying crystals is located in the upper cavity of the stepped cavity. Due to the continuous flow of clear water, the crystals can be flushed to remove the adhered residual adhesive or adhesive removal solution.

[0029] Combination Figure 3 As shown, the hot air blowing mechanism includes a blower box 701, with multiple air outlets 702 evenly distributed on the upper surface of the blower box. A hot air inlet pipe 703 is connected to the lower part of the blower box and is connected to an external hot air supply system. In this embodiment, the hot air can be a mixture of nitrogen and hot air to reduce the oxygen content and minimize the impact of oxidation reactions. Each air outlet is provided with a funnel-shaped air diffuser 704, which can effectively increase the air outlet area and improve the drying efficiency.

[0030] The working principle and adhesive removal process of this utility model are as follows:

[0031] Step (1), as follows Figure 4 As shown, this utility model generates a vacuum through a vacuum generator 13, which acts on an adsorption platform 12 containing multiple suction nozzles 14. Each suction nozzle 14 is connected to the vacuum generator 13 through a vacuum pipe 15, giving the adsorption platform 12 a strong vacuum force. Then, the adsorption platform 12 is lowered by a lifting electric cylinder 10 to adhere to the wafer source on the first carrier 4 for a certain period of time. At the same time, the suction nozzles 14 on the platform that have not adhered to and contacted the crystals will close the vacuum pipes 15 (after moving to a preset distance, according to the value of the flow meter, the orifices that still have vacuum suction are determined to be the parts that have not contacted the crystals, and the vacuum pipes are closed by using a solenoid valve). Finally, the adsorption platform 12 rises, and the vacuum adsorption platform adsorbs the crystals, separating the crystals from the blue film.

[0032] Step (2): The translation electric cylinder 2 drives the slider 9 to move laterally, so that the adsorption platform 12 moves to the position of the descaling liquid tank 5. The lifting electric cylinder 10 drives the adsorption platform 12 to descend, so that the crystals on the adsorption platform 12 are placed in the tank containing the descaling liquid for immersion. After immersion for a certain period of time, the blue film residue on the back of the crystals will soften and partially or completely fall off.

[0033] Step (3): The adsorption platform 12 rises and moves laterally to the clean water tank 6 containing flowing clean water. The clean water tank 6 is a stepped flowable cleaning tank. The adsorption platform 12 descends and the crystal particles are rinsed and cleaned by flowing pure water for a certain period of time to further clean the crystal particles.

[0034] Step (4): Raise the adsorption platform 12 and move it to the drying position (directly above the hot air blowing mechanism 7), use a mixture of nitrogen and hot air to air dry for a certain period of time, and blow away the water.

[0035] Step (5): Lower the adsorption platform 12 so that the crystals on it come into contact with the empty blue film on the second stage 8 (the required moving distance for the crystals on the platform to come into contact with the empty blue film on the stage is pre-adjusted and set). After a certain period of contact, the adsorption platform 12 is degassed (so that the platform loses its ability to adsorb crystals). The crystals are then attached to the blue film by the adhesive force of the blue film.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all changes falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

Claims

1. A device for treating residual adhesive on sorting pins, characterized in that: It includes a slide rail, a crystal adsorption mechanism, and a translation electric cylinder. The lower end of the slide rail is connected to the translation electric cylinder, which is connected to the crystal adsorption mechanism. The crystal adsorption mechanism is slidably connected to the slide rail. A worktable is provided below the slide rail. Along the length of the slide rail, a first platform, a descaling liquid tank, a clean water tank, a hot air blowing mechanism, and a second platform are arranged sequentially on the worktable.

2. The sorting pin residual adhesive treatment device as described in claim 1, characterized in that: The crystal adsorption mechanism includes a slider, a lifting electric cylinder, a clamping assembly, an adsorption platform, and a vacuum generator. The slider is slidably connected to a slide rail, the slider is connected to the lifting electric cylinder, the lifting electric cylinder is connected to the clamping assembly, the clamping assembly is connected to the adsorption platform, and the bottom of the adsorption platform is provided with multiple suction nozzles. Each suction nozzle is connected to the vacuum generator through a vacuum pipe.

3. The sorting pin residual adhesive treatment device as described in claim 2, characterized in that: The clamping assembly includes a base and two U-shaped claws. The two U-shaped claws are symmetrically distributed on both sides of the base. Each U-shaped claw is rotatably connected to the base via a rotating shaft. The adsorption platform is pressed on the two U-shaped claws, and the bottom of the adsorption platform is provided with a positioning groove that cooperates with the U-shaped claws.

4. The residual adhesive treatment device for sorting pins as described in claim 3, characterized in that: The U-shaped lifting claw is provided with a positioning hole, and a positioning screw is threaded into the positioning hole. The positioning screw is threaded into the base.

5. The residual adhesive treatment device for sorting pins as described in claim 2, characterized in that: Each of the vacuum pipes is equipped with a flow meter and a solenoid valve.

6. The residual adhesive treatment device for sorting pins as described in claim 1, characterized in that: An inverted L-shaped partition is provided on one side of the clear water tank, forming a stepped cavity inside the clear water tank. An overflow baffle is provided on the upper part of the inverted L-shaped partition. The overflow baffle is located at the stepped surface of the stepped cavity, and its upper end face is lower than the upper end face of the side wall of the clear water tank.

7. The sorting pin residual adhesive treatment device as described in claim 1, characterized in that: The glue removal tank and the clear water tank are each equipped with an inlet pipe and an outlet pipe, and valves are installed on the inlet pipe and the outlet pipe.

8. The residual adhesive treatment device for sorting pins as described in claim 1, characterized in that: The hot air blowing mechanism includes a blower box, with multiple air outlets evenly distributed on the upper surface of the blower box, and a hot air inlet pipe connected to the lower part of the blower box.

9. The residual adhesive treatment device for sorting pins as described in claim 8, characterized in that: Each of the air outlets is provided with a funnel-shaped diffuser on the outside.

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