A loading device for a die bonder

Abstract

The application discloses a feeding device of a die bonder, which comprises a conveying frame, rotatable conveying tracks are symmetrically arranged on the front and back sides of the conveying frame along the conveying direction, a heating plate capable of moving up and down is arranged between the conveying tracks on the front and back sides in the conveying frame, the heating plate moves up to make the product plate separate from the conveying track after the product plate is conveyed to the position by the conveying track, the heating plate moves down to reset to make the product plate automatically fall on the conveying track after a predetermined time is reached or after glue dispensing is completed, the heating plate is uniformly paved with electric heating elements, the electric heating elements are connected with a control mechanism for controlling the temperature of the heating plate, a cover plate is connected above the conveying tracks of the conveying frame, and the cover plate is provided with a glue dispensing gap for dispensing glue to the product. The feeding device of the die bonder can integrate the preheating function and the feeding function in the same process, solve the problems of multiple processes and complex operation, and also avoid the problem of affecting the preheating effect in the transfer process.

Description

Technical Field

[0001] This utility model relates to the field of feeding device technology, and in particular to a feeding device for a die bonder. Background Technology

[0002] A die bonder (also known as a die attacher, wafer bonding machine, or chip bonding machine) is a precision device that integrates functions such as die picking, dispensing, and die bonding. It is primarily used in the semiconductor packaging field, involving processes such as lead frame plate pressing and chip mounting in gold wire ultrasonic welding equipment. It achieves high-precision motion control through servo drives and linear motors, and utilizes a camera feedback system to adjust operations in real time.

[0003] Before die bonding, the die bonder needs to preheat the materials (usually the chip and the substrate). By actively controlling and increasing the temperature of the materials, the die bonder can achieve a stable and ideal thermal state during the die bonding process, thereby eliminating or reducing various process defects caused by temperature difference and thermal stress, and ultimately ensuring the "positional accuracy" and "bonding strength" of the die bonder.

[0004] In existing technologies, materials are usually preheated in a preheating process and then transferred to a loading process. This involves multiple processes and complex operations, and the transfer process may also affect the preheating effect. Utility Model Content

[0005] This application provides a die bonder feeding device that integrates preheating and feeding functions into the same process, solving the problems of multiple processes and complex operations, while also avoiding the problem of affecting the preheating effect during the transfer process.

[0006] This application provides a die bonder feeding device for preheating products during the feeding process. The feeding device includes a conveyor frame with rotatable conveying tracks symmetrically arranged on its front and rear sides along the conveying direction for directional conveying of product boards. A heating plate capable of vertical movement is provided between the conveying tracks on the front and rear sides of the conveyor frame. After the product board is conveyed to its designated position by the conveying tracks, the heating plate moves upward, causing the product board to detach from the conveying tracks. After a predetermined time has elapsed or after dispensing is completed, the heating plate moves downward to reset, causing the product board to automatically fall back onto the conveying tracks. Electric heating elements are evenly distributed within the heating plate, and each electric heating element is connected to a control mechanism for controlling the temperature of the heating plate. A cover plate is connected above the conveying tracks to the conveyor frame, and the cover plate has a dispensing gap for dispensing adhesive onto the product.

[0007] In one possible implementation, the cover plate is U-shaped and includes a main cover plate and connecting plates symmetrically and vertically connected to the front and rear sides of the main cover plate, wherein the connecting plates on the front and rear sides respectively cover the front and rear sides of the conveyor frame, wherein the main cover plate is located above the material conveying track, and the dispensing gap is formed on the main cover plate.

[0008] In one possible implementation, the dispensing gap is a square hole extending perpendicular to the conveying direction, the length of which completely covers the material conveying track on both the front and rear sides.

[0009] In one possible implementation, the portion of the main cover plate located outside the square hole and the connecting plate are connected to the conveyor frame by fastening bolts.

[0010] In one possible implementation, the electric heating element is a heating rod, and the control mechanism includes a thermocouple and a controller, wherein the thermocouple is located inside the heating plate, and both the electric heating element and the thermocouple are electrically connected to the controller.

[0011] In one possible implementation, the thermocouple electrical signal is connected to a temperature display screen.

[0012] In one possible implementation, a cylinder or electric cylinder is provided inside the conveyor frame directly below the heating plate, and the cylinder or electric cylinder is connected to the heating plate at its top telescopic end.

[0013] Beneficial effects: Compared with the prior art, the die bonder feeding device provided in this application sets a heating plate on the conveyor frame. When the product board is conveyed to the position by the conveyor track, the heating plate lifts the product board, and the product board can be dispensed after preheating. When the predetermined time is reached or after dispensing is completed, the heating plate moves down to reset, and the product board automatically falls back to the conveyor track and can be normally conveyed to the next process. Thus, the preheating function and the feeding function can be integrated into the same process. The equipment occupies little space and can solve the problems of multiple processes and complex operation. It can also avoid the problem of the preheating effect being affected by product transfer in conventional multi-process situations.

[0014] These and other objects, features and advantages of this utility model will be fully realized through the following detailed description. Attached Figure Description

[0015] Figure 1 A schematic diagram of the die bonder feeding device of this application is shown.

[0016] Figure 2 A schematic diagram of the die bonder feeding device of this application is shown.

[0017] Figure 3A schematic diagram of the on-site operation of the die bonder feeding device of this application is shown. Detailed Implementation

[0018] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0019] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "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, the above terms should not be construed as limitations on this utility model.

[0020] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0021] refer to Figures 1 to 3 This application provides a die bonder feeding device for preheating products during the feeding process, wherein the products are distributed on a product plate. The feeding device includes a conveyor frame 10, wherein rotatable conveying tracks 11 are symmetrically arranged on the front and rear sides along the conveying direction for directional conveying of product boards. A heating plate 20 capable of vertical movement is provided between the conveying tracks 11 on the front and rear sides of the conveyor frame 10. The heating plate 20 is in clearance fit with the conveying tracks 11. After the product board is conveyed to the designated position by the conveying tracks 11, the heating plate 20 moves upward, causing the product board to detach from the conveying tracks 11. Thus, the product on the product board can be preheated by the heating plate 20. The reason for lifting the product board away from the conveying tracks 11 is twofold: firstly, to prevent heat transfer from the product board to the conveying tracks 11 due to heat conduction, thus affecting the preheating effect; and secondly, to prevent sudden movement of the conveying tracks 11 from affecting preheating and dispensing operations. After a predetermined time has elapsed or after dispensing is completed, the heating plate 20 moves downward to reset, causing the product board to automatically fall back onto the conveying tracks 11.

[0022] The heating plate 20 can be moved up and down by a cylinder or electric cylinder located directly below the heating plate 20 within the conveyor frame 10. The cylinder or electric cylinder's telescopic end at the top is connected to the heating plate 20, driving the heating plate 20 to move up and down. The start and stop timing of the cylinder or electric cylinder is linked to the drive mechanism in the feeding device that drives the product board to move on the conveying track 11. The feeding device is a conventional device in existing die bonders, generally driven by a servo motor. That is, the cylinder or electric cylinder and the servo motor work together. When the positioning sensor on the feeding device detects that the product board has arrived, or when the servo motor has rotated a predetermined number of revolutions, the servo motor stops rotating, the cylinder or electric cylinder extends, and pushes the heating plate 20 upward away from the conveying track. When the predetermined time is reached or the dispensing is completed, the cylinder or electric cylinder retracts, and the heating plate 20 automatically falls back onto the conveying track. At this time, the conveying track 11 will transport the product board to the next process.

[0023] The heating plate 20 is uniformly covered with electric heating elements, and the electric heating elements are connected to a control mechanism for controlling the temperature of the heating plate. In addition, the conveyor frame 10 is connected to a cover plate 30 above the conveying track 11, and the cover plate 30 has a dispensing gap 301 for dispensing glue to the product.

[0024] In one embodiment, the cover plate 30 is U-shaped and includes a main cover plate 31 and connecting plates 32 symmetrically and vertically connected to the front and rear sides of the main cover plate 31. The connecting plates 32 on the front and rear sides respectively cover the front and rear sides of the conveying frame 10. The main cover plate 31 is located above the material conveying track 11, and the dispensing gap 301 is formed on the main cover plate 31.

[0025] The connecting plate 32 can be an integral structural plate or it can be composed of multiple spaced connecting rods.

[0026] In one embodiment, the dispensing gap 301 is a square hole extending vertically along the conveying direction, and the length of the square hole completely covers the front and rear sides of the conveying track 11 to ensure that the product on the product board can be completely covered.

[0027] In one embodiment, the portion of the main cover plate 31 located outside the square hole and the connecting plate 32 are connected to the conveyor frame 10 by fastening bolts 33. This design, which connects multiple points simultaneously in a two-dimensional space (including the horizontal and vertical directions), can enhance the connection strength and overall structural stability between the cover plate 30 and the conveyor frame 10.

[0028] In one embodiment, the electric heating element is a heating rod, and the control mechanism includes a thermocouple and a controller. The thermocouple is located within the heating plate, and both the electric heating element and the thermocouple are electrically connected to the controller. Thermocouples are commonly used temperature-sensing elements in temperature measuring instruments. They directly measure the temperature of the heating plate and convert the temperature signal into a thermoelectric potential signal. The controller receives the thermocouple signal and controls the heating rod to heat the heating plate when needed.

[0029] More preferably, the thermocouple electrical signal is connected to a temperature display screen (not shown in the figure) to display the temperature of the heating plate in real time, so that staff can easily check and understand the situation in a timely manner.

[0030] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A die bonder feeding device for preheating products during the feeding process, the feeding device comprising a conveyor frame, wherein rotatable conveying tracks are symmetrically arranged on the front and rear sides of the conveyor frame along the conveying direction for directional conveying of product plates, characterized in that, The conveyor frame is equipped with a heating plate that can move up and down between the material conveying tracks on the front and rear sides. After the product board is conveyed to the position by the material conveying tracks, the heating plate moves up to remove the product board from the material conveying tracks. After a predetermined time or after the dispensing is completed, the heating plate moves down to reset and the product board automatically falls back onto the material conveying tracks. Electric heating elements are evenly distributed inside the heating plate. The electric heating elements are connected to a control mechanism for controlling the temperature of the heating plate. A cover plate is connected above the material conveying tracks to the conveyor frame. The cover plate has a dispensing gap for dispensing glue onto the product.

2. The die bonder feeding device as described in claim 1, characterized in that, The cover plate is U-shaped and includes a main cover plate and connecting plates symmetrically and vertically connected to the front and rear sides of the main cover plate. The connecting plates on the front and rear sides respectively cover the front and rear sides of the conveyor frame. The main cover plate is located above the material conveying track, and the dispensing gap is opened on the main cover plate.

3. The die bonder feeding device as described in claim 2, characterized in that, The dispensing gap is a square hole extending perpendicular to the conveying direction, and the length of the square hole completely covers the material conveying track on both the front and rear sides.

4. The die bonder feeding device as described in claim 3, characterized in that, The portion of the main cover plate located outside the square hole and the connecting plate are connected to the conveyor frame by fastening bolts.

5. The die bonder feeding device as described in claim 1, characterized in that, The electric heating element is a heating rod, and the control mechanism includes a thermocouple and a controller, wherein the thermocouple is located inside the heating plate, and both the electric heating element and the thermocouple are electrically connected to the controller.

6. The die bonder feeding device as described in claim 5, characterized in that, The thermocouple electrical signal is connected to a temperature display screen.

7. The die bonder feeding device as described in claim 1, characterized in that, A cylinder or electric cylinder is provided inside the conveyor frame directly below the heating plate, and the telescopic end of the cylinder or electric cylinder at the top is connected to the heating plate.

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