A kind of clamping jaw mechanism for plastic package block wafer feeding

Abstract

The utility model relates to the field of plastic -encapsulated block wafer production, more particularly to a kind of gripper mechanism for plastic -encapsulated block wafer feeding, it includes: main body frame;Power system, the power system is installed on the main body frame;Flexible claw, the flexible claw is installed on the main body frame and is arranged in pairs, and with the power system is connected, the power system drives the flexible claw opposite opening and closing, and the flexible claw position opposite of pair is the elastic material and the grabbing surface is set from top to bottom obliquely outside.The technical effect of realizing grabbing surface reduction product damage, oblique setting enhances separation effect, improves feeding stability and compatibility.

Description

Technical Field

[0001] This utility model relates to the field of plastic sealant sheet production, specifically a gripper mechanism for feeding plastic sealant sheets. Background Technology

[0002] In the loading process of molding compound defect detection equipment, the traditional method relies on manual placement of the cartridge products into the designated position, followed by lifting by a lifting shaft and gripping by a clamping mechanism to pick up the top layer of products. Existing technologies such as nozzle-type loading (compatible only with single-size products) or cylinder-type clamping loading (easy to grip two products simultaneously due to small product spacing) have significant drawbacks: poor equipment compatibility, low loading stability, and high false-grip rate. These problems lead to low production efficiency, long changeover times, and are prone to causing material accumulation or product damage in high-precision molding compound thin-film inspection scenarios. Therefore, there is an urgent need for a loading mechanism that can adapt to products of different widths, ensures gripping only a single sheet, and improves stability to meet the needs of high efficiency and versatility in semiconductor testing equipment. Utility Model Content

[0003] This utility model provides a gripper mechanism for feeding plastic sealing blocks and sheets, solving the aforementioned background technical problems. It includes:

[0004] Main frame;

[0005] A power system, which is mounted on the main frame;

[0006] The flexible claws are mounted on the main frame and arranged in pairs, and are connected to the power system. The power system drives the flexible claws to open and close relative to each other. The gripping surfaces of the paired flexible claws are made of elastic material and are arranged obliquely outward from top to bottom.

[0007] This claim comprehensively solves the core problems of the aforementioned prior art. The main frame provides stable support, ensuring the reliability of the mechanism's operation. The power system drives the flexible claw to open and close, and combined with the elastic material and inclined design of the gripping surface, it effectively ensures that only the top-layer product is gripped, avoiding the accidental gripping of lower-layer products. The elastic gripping surface reduces product damage, and the inclined design enhances the separation effect, improving feeding stability and compatibility.

[0008] Preferably, the gripping surface is provided with flexible anti-slip teeth. The flexible anti-slip teeth design significantly enhances the friction of the gripping surface, preventing the sheet product from slipping or shifting during gripping. This directly improves the success rate of loading, especially in high-speed production changeovers or high-vibration environments, ensuring that the product is reliably clamped. At the same time, the flexibility of the anti-slip teeth reduces the risk of scratching the product surface, maintaining product quality.

[0009] Preferably, the power system is a pneumatic system controlled by a solenoid valve. Using a pneumatic system (such as a pneumatic cylinder) in conjunction with solenoid valve control enables rapid response and precise adjustment of the gripper's opening and closing. The pneumatic system provides stable driving force, and the solenoid valve ensures controllable opening and closing actions, optimizing gripping efficiency and avoiding gripping failures due to insufficient power or delays. Simultaneously, the pneumatic system has a simple structure, low maintenance costs, and improves the reliability of the mechanism.

[0010] Preferably, the flexible claw is mounted on a guide rail on the main frame and moves laterally driven by a motor. The guide rail mounting, combined with the motor drive, enables precise adjustment of the claw spacing. This solves the compatibility problem of existing technologies that can only load a single product: by controlling lateral movement with a motor, it can quickly adapt to products of different widths, reducing changeover time. The guide rail ensures smooth movement, avoids deviation, and enhances overall loading accuracy and stability.

[0011] Preferably, the elastic material of the gripping surface is rubber. Rubber provides excellent elasticity and cushioning properties, further enhancing the gripping surface's anti-slip and anti-damage effects. The flexibility of rubber ensures even distribution of gripping force, avoiding product deformation or indentation caused by rigid materials, making it particularly suitable for fragile plastic-sealed sheets and improving product quality consistency and equipment reliability.

[0012] Preferably, the power system is configured with an air pressure within a threshold range, ensuring that the clamping force generated by the paired flexible claws has a preset upper limit. Setting an air pressure threshold to limit the upper limit of the clamping force prevents excessive clamping from causing product damage or deformation. This solves the problem of accidental injury caused by uncontrolled clamping force in the prior art, ensuring a safe and controllable gripping process. The threshold design can also adapt to different product thicknesses, improving compatibility and operational safety. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a structural diagram of an embodiment of the present utility model.

[0015] 1-Thin sheet, 2-Flexible claw, 3-Guide rail, 4-Solenoid valve, 5-Main frame, 6-Motor. Detailed Implementation

[0016] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0017] To address the problems mentioned in the prior art, this utility model provides a gripper mechanism for feeding plastic sealing block sheets 1, such as... Figure 1 It includes:

[0018] Main frame 5;

[0019] The power system is installed on the main frame 5 and is a pneumatic system controlled by a solenoid valve 4.

[0020] Flexible claw 2 is mounted on the main frame 5 and arranged in pairs, and is connected to the power system. The power system drives the flexible claw 2 to open and close relative to each other. The gripping surfaces of the paired flexible claw 2 are made of elastic material (rubber in this embodiment) and are arranged obliquely outward from top to bottom. The gripping surfaces are provided with flexible anti-slip teeth.

[0021] The power system is set with a threshold range of air pressure, so that the clamping force formed by the paired flexible claws 2 has a preset upper limit.

[0022] Specifically, the flexible claws 2 are mounted on a guide rail 3 on the main frame 5 and are driven laterally by a motor 6, allowing the spacing between the pairs of flexible claws to be adjustable. The gripping surface of the flexible claws 2 is angled outward at a 15°–30° angle to the vertical direction. This design ensures that during gripping, only the edge of the topmost product is contacted, while lower products naturally separate due to gravity and the inclined surface, completely avoiding accidental gripping. The motor 6 drives the slider of the linear guide rail 3 via a synchronous belt (or gear set), causing the flexible claws 2 on both sides to move synchronously towards or away from each other. The travel range covers 50–150 mm, adapting to products of different widths. The guide rail 3 and the main frame 5 are connected by a high-precision linear bearing to ensure translational stability.

[0023] The power system is pneumatically driven, with solenoid valve 4 controlling a double-acting cylinder (the cylinder piston rod is connected to the flexible claw 2 opening and closing arm). A pressure reducing valve is installed in the air circuit to limit the output air pressure to the range of 0.2–0.5MPa, so that the gripping force is always at a safe threshold, avoiding damage to the thin sheet 1 product.

[0024] Grasping stage: When solenoid valve 4 is energized, compressed air pushes the cylinder to close flexible claw 2, and the gripping surface fits against the edge of the product;

[0025] Release phase: Solenoid valve 4 is de-energized, cylinder is depressurized, and flexible claw 2 opens by spring reset (or opens actively by reverse ventilation).

[0026] The entire action response time is ≤0.3 seconds, meeting the requirements for high-speed material feeding.

[0027] The compatibility adjustment process involves performing the following steps when switching between products of different widths:

[0028] Spacing adjustment: Motor 6 receives control signals to drive guide rail 3, which in turn moves the flexible claws 2 on both sides to the target spacing (the spacing value is pre-stored in PLC);

[0029] Grasping verification: Solenoid valve 4 triggers flexible claw 2 to attempt a gripping action, and the pressure sensor detects whether the gripping force is within the set range;

[0030] Position calibration: If the gripping force is abnormal, motor 6 will fine-tune the position of the soft claw (±1mm accuracy) until the gripping is stable.

[0031] The anti-mis-grabbing mechanism, with its inclined design and elastic material, provides dual protection against mis-grabbing.

[0032] Physical separation: An inclination angle of 15°–30° ensures that the gripping surface only contacts the top layer of product, while the lower layer of product naturally sinks and detaches from the contact area due to gravity;

[0033] Elastic cushioning: The rubber gripping surface deforms when closed (compression ≤ 0.5mm), ensuring a close fit to the product without compressing the underlying layer.

[0034] Performance verification: In the stacking test with a 0.8mm pitch, the false gripping rate was reduced to <0.1% (the false gripping rate of the original cylinder gripper solution was >15%).

[0035] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0036] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A gripper mechanism for feeding plastic sealing blocks / sheets, characterized in that, include: Main frame; A power system, which is mounted on the main frame; The flexible claws are mounted on the main frame and arranged in pairs, and are connected to the power system. The power system drives the flexible claws to open and close relative to each other. The gripping surfaces of the paired flexible claws are made of elastic material and are arranged obliquely outward from top to bottom.

2. The gripper mechanism for feeding plastic sealing blocks / sheets according to claim 1, characterized in that, The gripping surface is equipped with flexible anti-slip teeth.

3. The gripper mechanism for feeding plastic sealing blocks / sheets according to claim 1, characterized in that, The power system is a pneumatic system controlled by a solenoid valve.

4. The gripper mechanism for feeding plastic sealing blocks / sheets according to claim 1, characterized in that, The flexible claw is mounted on a guide rail on the main frame and moves laterally driven by a motor.

5. The gripper mechanism for feeding plastic sealing blocks / sheets according to claim 2, characterized in that, The elastic material of the gripping surface is rubber.

6. The gripper mechanism for feeding plastic sealing blocks / sheets according to claim 3, characterized in that, The power system is set with a threshold range of air pressure, so that the clamping force formed by the paired flexible claws has a preset upper limit.

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