Sheet unloading device

Abstract

The application discloses a wafer unloading device, which comprises a grabbing unit and a receiving unit arranged at the bottom and used for receiving the wafer grabbed by the grabbing unit; the receiving unit is arranged opposite to the grabbing unit; the grabbing unit can move along the z-axis direction to place the grabbed wafer on the receiving plate; the receiving unit comprises a support, a receiving plate and a wafer box arranged on the support; the receiving plate can move along the z-axis direction to the top opening of the wafer box and gradually place the received wafer in the wafer box. The receiving plate of the application can move to the top opening of the wafer box to receive the wafer, the grabbing unit places the wafer on the receiving plate, and the receiving plate can gradually place the wafer in the wafer box, so that the wafer is not damaged and the yield is improved.

Description

Technical Field

[0001] This application relates to the field of chip encapsulation technology, specifically to a chip unloading device. Background Technology

[0002] Chip molding machines are key equipment in semiconductor packaging, such as leadframe packaging. They encapsulate and protect the core of integrated circuits by introducing and curing packaging materials (such as epoxy resin), ensuring that the chip operates stably in complex environments.

[0003] The existing magazine-type finished product collection mechanism with publication number CN118850723A has a feeding module that, after picking up the material piece, needs to move to the top opening of the magazine and release the material piece, which then falls into the magazine. Because the magazine has a certain height, when the feeding module releases the material piece, the material piece falls into the magazine through free fall, which can easily cause damage to the material piece. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a sheet unloading device. A receiving plate moves to the top opening of the material box to receive the sheet, a gripping unit then places the sheet on the receiving plate, and the receiving plate gradually places the sheet into the material box. This avoids damage to the sheet and improves yield. The technical solution is as follows: A material unloading device includes a gripping unit and a receiving unit located at the bottom of the gripping unit, the receiving unit being used to collect the material gripped by the gripping unit; The receiving unit includes a support and a receiving plate, as well as a material box disposed on the support. The receiving plate can move along the z-axis to the top opening of the material box and gradually place the received material pieces into the material box. The receiving unit is positioned opposite to the gripping unit; the gripping unit can move along the z-axis to place the gripped material onto the receiving plate.

[0005] Preferably, the system further includes a lifting mechanism located at the bottom of the support frame. The lifting mechanism is connected to the receiving plate and is used to drive the receiving plate to move along the z-axis.

[0006] More preferably, the lifting mechanism includes a top rod and a drive assembly, the top rod connecting the drive assembly and the receiving plate, and the drive assembly driving the top rod to move along the z-axis.

[0007] Preferably, the bottom of the material box is provided with a clearance groove for the receiving plate to move in and out of the material box.

[0008] Preferably, the gripping unit includes a power component and a clamp, the power component is used to drive the clamp to move along the z-axis, and the clamp is used to grip the material sheet and place it on the receiving plate.

[0009] More preferably, the fixture includes a mounting plate, and a gripping assembly and a pressing assembly disposed on the mounting plate. The gripping assembly is used to pick up and put down the sheet, and the pressing assembly is disposed inside the gripping assembly to press the sheet onto the gripping assembly.

[0010] More preferably, the gripping component includes an opening and closing component, with a plurality of claws respectively provided on both sides of the opening and closing component, forming a gripping area between the claws, the opening and closing component being used to drive the claws to close or open, and a support frame being provided between the opening and closing component and the claws respectively.

[0011] More preferably, the pressing assembly includes a pressure plate, an elastic component, and a limiting ring. A guide rod is provided between the pressure plate and the limiting ring. The guide rod is slidably connected to the mounting plate. The elastic component is used to drive the pressure plate to press the material sheet tightly onto the clamping assembly.

[0012] Compared with the prior art, the beneficial effects of this application are as follows: This application shortens the distance between the gripping unit and the receiving plate by moving the receiving plate to the top opening of the material box for receiving. The gripping unit can move along the z-axis to place the material sheet on the receiving plate. At the same time, for each material sheet stacked on the receiving plate, the receiving plate moves down by the height of one material sheet. This avoids the material sheet falling directly into the material box when the gripping unit places the material sheet, thereby reducing damage to the material sheet and improving unloading efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of this application; Figure 2 This is a three-dimensional structural diagram of the fixture in this application; Figure 3 This is a schematic diagram of the material pressing assembly of this application; Figure 4 This is a schematic diagram of the receiving plate structure during material receiving in this application.

[0014] In the picture: 00. Sheet material; 1. Gripping unit; 11. Power assembly; 12. Fixture; 120. Gripping assembly; 121. Mounting plate; 122. Pressing assembly; 1221. Pressing plate; 1222. Elastic component; 1223. Guide rod; 1224. Limiting ring; 123. Opening and closing assembly; 124. Claw; 125. Guide assembly; 126. Support frame; 2. Receiving unit; 21. Support; 210. Placement area; 22. Receiving plate; 23. Material box; 230. Clearance groove; 24. Top rod; 25. Drive assembly; 26. Movable plate. 3. Lifting mechanism; 4. Pressing assembly. Detailed Implementation

[0015] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0016] See Figures 1 to 4 To further elaborate on this application: Combination Figure 1 A material unloading device includes a gripping unit 1 and a receiving unit 2 arranged opposite to each other. The gripping unit 1 is located on top of the receiving unit 2, and the receiving unit 2 is used to receive the material piece 00 gripped by the gripping unit 1.

[0017] The receiving unit 2 includes a support 21 and a receiving plate 22, as well as a material box 23 disposed on the support 21. The receiving plate 22 can move along the z-axis to the top opening of the material box 23 to gradually place the received material sheet 00 into the material box 23.

[0018] The gripping unit 1 can move along the z-axis (the vertical movement direction in the figure) to place the gripped material piece 00 onto the receiving plate 22.

[0019] In this embodiment, the receiving unit 2 further includes a lifting mechanism 3, which is located at the bottom of the bracket 21 and connected to the receiving plate 22. The lifting mechanism 3 is used to drive the receiving plate 22 to move along the z-axis, thereby reducing the footprint.

[0020] When receiving materials, the receiving plate 22 moves to the top opening of the material box 23. For each additional material piece 00 added to the receiving plate 22, the lifting mechanism 3 drives the receiving plate 22 to move downward by the height of one material piece 00, so as to ensure that the material piece 00 is received at the top opening of the material box 23 each time, so as to stack and place the material pieces 00 gradually into the material box 23. When the receiving plate 22 moves out of the material box 23, the material box 23 is simultaneously filled with material pieces 00.

[0021] This application shortens the distance between the receiving plate 22 and the gripping unit 1 by moving the receiving plate 22 to the top opening of the material box 23 to receive the material sheet 00. This allows the gripping unit 1 to move along the z-axis closer to the receiving plate 22, stack the gripped material sheets 00, and then the lifting mechanism 3 drives the receiving plate 22 to gradually place the material sheet 00 into the material box 23. This avoids the material sheet 00 falling directly into the material box 23 when the gripping unit 1 places the material sheet 00, thereby reducing damage to the material sheet 00 and improving the yield.

[0022] Combination Figure 4 The lifting mechanism 3 includes a top rod 24 and a drive assembly 25. The top rod 24 connects the drive assembly 25 and the receiving plate 22. A movable plate 26 connects the drive assembly 25 and the top rod 24. The drive assembly 25 drives the top rod 24 to move along the z-axis. In this embodiment, the drive assembly 25 may be a lead screw assembly, which drives the movable plate 26 to move the receiving plate 22 along the z-axis. In some embodiments, the drive assembly 25 may be a cylinder or other linear drive mechanism.

[0023] The bottom of the material box 23 is provided with a clearance groove 230 for the receiving plate 22 to enter and exit the material box 23; the support 21 is provided with a placement area 210 for placing the material box 23; when the receiving plate 22 moves out of the material box 23, the material box 23 can be removed from the support 21; a baffle may be provided inside the material box 23 to cover the clearance groove 230; the receiving plate 22 can push the baffle to move within the material box 23, and when the receiving plate 22 moves out of the material box 23, the baffle blocks the clearance groove 230 to prevent the material sheet from falling through the clearance groove 230.

[0024] In some embodiments, the support 21 may be provided with a clamping component 4 to limit and fix the material box 23 in the placement area 210.

[0025] Combination Figure 1 The gripping unit 1 includes a power assembly 11 and a clamp 12. The power assembly 11 drives the clamp 12 to move along the z-axis. The clamp 12 grips the material sheet 00 and places it on the receiving plate 22. The clamp 12 can be an existing gripping mechanism.

[0026] Combination Figure 2In this embodiment, the clamp 12 includes a mounting plate 121, and a clamping component 120 and a pressing component 122 disposed on the mounting plate 121. The clamping component 120 is used to pick up and put down the sheet 00, and the pressing component 122 is disposed inside the clamping component 120 to fix the sheet 00 between the clamping component 120 and the pressing component 122, thereby preventing the sheet 00 from shaking or falling off during the conveying process.

[0027] The gripping assembly 120 includes at least one opening / closing assembly 123. A plurality of claws 124 are respectively provided on both sides of the opening / closing assembly 123, forming a gripping area between the claws 124 for placing the material sheet 00 and the pressing assembly 122. The opening / closing assembly 123 is used to drive the claws 124 on both sides to close or open, thereby gripping or releasing the material sheet 00. The opening / closing assembly 123 can be a finger cylinder, and a support frame 126 is provided between each claw 124 and the finger cylinder, with the claw 124 connected to the support frame 126. The claws 124 support the material sheet 00 to prevent it from falling; the support frames 126 are arranged parallel to each other.

[0028] Combination Figure 3 The pressing assembly 122 includes a pressing plate 1221, an elastic component 1222, and a limiting ring 1224. A guide rod 1223 is provided between the pressing plate 1221 and the limiting ring 1224. The guide rod 1223 is slidably connected to the mounting plate 121. The elastic component 1222 is used to drive the pressing plate 1221 along the z-axis direction to press the material sheet 00 onto the clamping assembly 120.

[0029] In some embodiments, the width of the pressure plate 1221 is the same as that of the sheet 00; when the clamp 12 clamps the sheet 00, the claw 124 retracts and abuts against both sides of the pressure plate 1221, and the pressure plate 1221 can protect the sheet 00 and prevent the sheet 00 from being damaged.

[0030] The pressure plate 1221 is located at the bottom of the mounting plate 121, the limiting ring 1224 is located at the top of the mounting plate 121, and the elastic member 1222 abuts against the mounting plate 121 and the pressure plate 1221; the elastic member 1222 is a spring; when the clamping assembly 120 clamps the material piece 00, the elastic member 1222 can push the pressure plate 1221 to abut against the material piece 00, pressing and fixing the material piece 00 between the pressure plate 1221 and the claw 124.

[0031] Combination Figure 2In some embodiments, guide components 125 are respectively provided on both sides of the opening and closing assembly 123 to guide and support the movement of the support frame 126. The guide component 125 includes a guide rod connected to the mounting plate 121 and a guide member disposed on the support frame 126. The guide member is sleeved on the outside of the guide rod and slidably connected to it; the guide member is a linear bearing or a copper sleeve, etc. The guide component 125 can also be a combination of a slider and a slide rail.

Claims

1. A sheet unloading device, characterized in that: It includes a gripping unit and a receiving unit located at the bottom of the gripping unit, the receiving unit being used to receive the material piece gripped by the gripping unit; The receiving unit includes a support and a receiving plate, as well as a material box disposed on the support. The receiving plate can move along the z-axis to the top opening of the material box and gradually place the received material pieces into the material box. The receiving unit is positioned opposite to the gripping unit; the gripping unit can move along the z-axis to place the gripped material onto the receiving plate.

2. The sheet unloading device according to claim 1, characterized in that: It also includes a lifting mechanism, which is located at the bottom of the bracket and connected to the receiving plate, for driving the receiving plate to move along the z-axis.

3. The sheet unloading device according to claim 2, characterized in that: The lifting mechanism includes a top rod and a drive assembly. The top rod connects the drive assembly and the receiving plate. The drive assembly is used to drive the top rod to move along the z-axis.

4. The sheet unloading device according to claim 1, characterized in that: The bottom of the material box is provided with a clearance groove for the receiving plate to enter and exit the material box.

5. The sheet unloading device according to claim 1, characterized in that: The gripping unit includes a power component and a clamp. The power component is used to drive the clamp to move along the z-axis direction. The clamp is used to grip the material sheet and place it on the receiving plate.

6. The sheet unloading device according to claim 5, characterized in that: The fixture includes a mounting plate, and a clamping assembly and a pressing assembly disposed on the mounting plate. The clamping assembly is used to pick up and put down the sheet, and the pressing assembly is disposed inside the clamping assembly to press the sheet onto the clamping assembly.

7. The sheet unloading device according to claim 6, characterized in that: The gripping assembly includes an opening and closing assembly, with a plurality of claws on both sides of the opening and closing assembly, forming a gripping area between the claws. The opening and closing assembly is used to drive the claws to close or open, and a support frame is provided between the opening and closing assembly and the claws.

8. The sheet unloading device according to claim 6, characterized in that: The pressing assembly includes a pressure plate, an elastic component, and a limiting ring. A guide rod is provided between the pressure plate and the limiting ring. The guide rod is slidably connected to the mounting plate. The elastic component is used to drive the pressure plate to press the material sheet onto the clamping assembly.

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