Tray feeding device for eutectic machine

Abstract

A material tray feeding device for a eutectic machine comprises a bottom plate, four L-shaped limiting pieces are installed at one end of the bottom plate through screws, a material tray is arranged in the limiting pieces, feeding and discharging notches are formed in the lower ends of the pair of limiting pieces located on the inner side, and a pushing mechanism is installed on the lower wall of the bottom plate. The pushing mechanism is used for ejecting the tray located on the bottom layer out of the discharging notch, the lifting mechanism is arranged at the upper end of the limiting piece located on the outer side and used for lifting the tray, and in order to conveniently eject the tray located on the bottom layer, the tray located on the upper layer is lifted up through the lifting mechanism in the ejection process; and after discharging is completed, the material disc is stably placed on the bottom plate, and in order to facilitate operation, grooves are formed in the periphery of the material disc so that the material disc can be lifted conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of semiconductor device processing, especially relates to a material tray feeding device for eutectic bonder. BACKGROUND

[0002] The eutectic bonder is one of the key equipment in semiconductor packaging, and is mainly used for realizing the connection between the chip and the lead frame base and island. When eutectic is carried out, the material tray filled with the chip is moved into the eutectic bonder, and then the chip is transferred, the solder paste and other welding materials are coated, and finally the eutectic operation is carried out. At present, when the material tray is fed, the single material tray feeding mode is used. This mode is replaced by the mode of feeding the stacked material tray according to the requirement due to the frequent need for feeding. However, this mode usually feeds by directly pushing the material tray on the bottom layer. In order to make the material tray on the upper layer move downward smoothly, multiple cylinders are usually used, which leads to high energy consumption and increases the failure rate. SUMMARY

[0003] The utility model provides a material tray feeding device for eutectic bonder to solve the above -mentioned prior art's insufficient, has strong practicality under the premise of ensuring that the material tray on the upper layer is stably discharged, reduces the use of driving parts.

[0004] In order to realize the purpose of the utility model, the following technologies are adopted:

[0005] A material tray feeding device for eutectic bonder, comprising a bottom plate, four L-shaped limiters are installed on one end of the bottom plate through screws, the material tray is in the limiter, and a pair of limiters on the inner side are provided with an inlet and outlet gap at the lower end, a pushing mechanism is installed on the lower wall of the bottom plate, the material tray on the bottom layer is pushed out from the outlet gap through the pushing mechanism, the upper end of the limiter on the outer side is provided with a lifting mechanism, and the lifting mechanism is used for lifting the material tray. In order to facilitate the ejection of the material tray on the bottom layer, the material tray on the upper layer is lifted by the lifting mechanism during the ejection process, and the material tray is placed on the bottom plate smoothly after the ejection is completed. In order to facilitate operation, grooves are formed around the material tray to facilitate the lifting operation of the material tray.

[0006] Further, in order to facilitate the placement of the material tray, an upper extension guard plate is arranged at the upper end of the limiter.

[0007] Further, the upper end of the upper extension guard plate is outwardly bent and formed with an inclined plate, which facilitates the placement of the material tray.

[0008] Further, in order to limit the material tray during pushing, a pair of limiting side plates are installed on the bottom plate.

[0009] Further, in order to improve the stability and accuracy of the tray conveying, the pushing mechanism comprises a pushing base plate, the pushing base plate is installed on the base plate through bolts, the two ends of the pushing base plate are provided with end seats, a pair of guide rails are installed on the pushing base plate, a motor is installed on one of the end seats, the output shaft of the motor is connected with a lead screw, a moving seat is threadedly connected with the lead screw, the moving seat is slidably arranged on the guide rails, a pair of push rods are installed on the moving seat, and a moving hole is formed in the base plate, and the push rods are arranged in the moving hole.

[0010] Further, the lifting mechanism comprises a mounting seat installed on the limiting member located on the outer side, a lifting cylinder is installed on the mounting seat, an L-shaped seat is installed on the movable end of the lifting cylinder, a concave member is arranged at the lower end of the L-shaped seat, a plurality of outer extension rods are installed on the concave member, an inner pushing cylinder is installed at the outer end of the outer extension rod, an inner pushing plate strip is installed at the movable end of the inner pushing cylinder, the outer extension rod is arranged in the inner pushing plate strip, a push-pull arm is installed at the two ends of the inner pushing plate strip through screws, a push-pull cross plate is arranged at the inner end of the push-pull arm, a transverse hole is formed in the push-pull cross plate, the length direction of the transverse hole is perpendicular to the length direction of the push-pull arm, an action rod is arranged in the transverse hole, a swing arm is arranged at the lower end of the action rod, a swing shaft is arranged at the inner end of the swing arm, a rotating seat is rotatably arranged on the swing shaft, the inner end of the rotating seat is installed on the two ends of the concave member, an inner top disc is eccentrically arranged at the lower end of the swing shaft, an inner top concave member is tangentially arranged on the outer periphery of the inner top disc, a spring pin is arranged in the inner top concave member, an end cap is arranged at the outer end of the spring pin, the inner end of the spring pin is threadedly connected to the concave member, a spring is sleeved on the spring pin, the inner top concave member is located on the outer side of the spring, the inner end of the spring acts on the outer wall of the concave member, and an inner insertion plate is arranged on the inner top concave member and arranged in the concave member. The lifting mechanism is used for lifting the tray through the lifting cylinder, and the inner insertion plate is driven by the inner pushing cylinder, which can move the inner insertion plate inward synchronously, thereby facilitating the lifting operation of the tray through the inner insertion plate, and the use of one driving source reduces the failure rate and energy consumption.

[0011] The technical scheme has the advantages that:

[0012] The utility model discloses a tray feeding device, which solves the problems of high energy consumption and high failure rate during tray feeding. ACCURATE DRAWINGS

[0013] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described further in detail below with reference to the drawings.

[0014] Figure 1 The utility model discloses a tray feeding device, which solves the problems of high energy consumption and high failure rate during tray feeding. Figure One .

[0015] Figure 2 The utility model discloses a tray feeding device, which solves the problems of high energy consumption and high failure rate during tray feeding.

[0016] Figure 3 shows the perspective structure of one embodiment Figure Two . DETAILED DESCRIPTION

[0017] As Figures 1-3 shown, a eutectic machine material tray feeding device, including a base plate 1, a pair of limiting side plates 10 is installed on the base plate 1, one end of the base plate 1 is installed by screw four L-shaped limiting pieces 2, the tray is in the limiting piece 2, and the lower end of the limiting piece 2 on the inside is provided with an inlet and outlet gap 21, the upper end of the limiting piece 2 is provided with an upper extension guard plate 20, the upper end of the upper extension guard plate 20 is outwardly bent and formed with an inclined plate.

[0018] The lower wall of the base plate 1 is provided with a pushing mechanism 3, the pushing mechanism 3 includes a pushing base plate 30, the pushing base plate 30 is installed on the base plate 1 by bolt, the both ends of the pushing base plate 30 are provided with end seats 34, a pair of guide rails 31 is installed on the pushing base plate 30, one of the end seats 34 is provided with a motor 36, the output shaft of the motor 36 is connected with a lead screw 35, the lead screw 35 is connected with a moving seat 32 through thread, the moving seat 32 is slidably arranged on the guide rail 31, a pair of push rods is installed on the moving seat 32, the base plate 1 is provided with a moving hole, the push rod is arranged in the moving hole.

[0019] The upper end of the limiting piece 2 on the outside is provided with a lifting mechanism, the lifting mechanism is used for lifting the tray. The lifting mechanism includes a mounting seat 4 installed on the limiting piece 2 on the outside, a lifting cylinder 40 is installed on the mounting seat 4, a movable end of the lifting cylinder 40 is provided with an L-shaped seat 41, a lower end of the L-shaped seat 41 is provided with a concave piece 42, a plurality of outer extension rods 43 are installed on the concave piece 42, inner push cylinders 44 are installed on the outer side end of the outer extension rods 43, movable ends of the inner push cylinders 44 are provided with inner push plate strips 45, the outer extension rods 43 are arranged in the inner push plate strips 45, the both ends of the inner push plate strips 45 are provided with push-pull arms 46 through screw, inner side ends of the push-pull arms 46 are provided with push-pull cross plates 47, the push-pull cross plates 47 are provided with transverse holes 48, the length direction of the transverse holes 48 is perpendicular to the length direction of the push-pull arms 46, action rods 49 are arranged in the transverse holes 48, lower ends of the action rods 49 are provided with swing arms 50, inner side ends of the swing arms 50 are provided with swing shafts, rotating seats 51 are rotatably arranged on the swing shafts, inner side ends of the rotating seats 51 are installed on the both ends of the concave piece 42, lower ends of the swing shafts are eccentrically provided with inner top discs 52, outer circumferences of the inner top discs 52 are tangentially provided with inner top concave pieces 54, spring pins 57 are arranged in the inner top concave pieces 54, outer side ends of the spring pins 57 are provided with end caps, inner side ends of the spring pins 57 are connected with the concave piece 42 through thread, springs 53 are sleeved on the spring pins 57, the inner top concave pieces 54 are located on the outer side of the springs 53, inner side ends of the springs 53 act on the outer wall of the concave piece 42, the inner top concave pieces 54 are provided with inner insertion plates 55, the inner insertion plates 55 are arranged in the concave piece 42.

[0020] In implementing this embodiment, the operator should, as follows: Figure 1 The material trays are placed vertically in the limiting member 2, with the upper end of the limiting member 2 facing downwards. During placement, it is also necessary to ensure that the push rod is located at one end of the base plate 1, that is, when the push rod moves forward, it can push the material tray located at the bottom to move forward through its movement.

[0021] During feeding, the inner push cylinder 44 is activated first. Driven by the inner push cylinder 44, the inner push plate 45 moves. The movement of the inner push plate 45 will drive the push-pull arms 46 at both ends to move inward. As the push-pull arms 46 move, they will act on the action rod 49 through the transverse hole 48, thereby causing the swing arm 50 to rotate. The rotation of the swing arm 50 will drive the inner top plate 52 at its lower end to rotate. When the inner top plate 52 rotates, its outer periphery will act on the inner top recess 54, thereby causing the inner top recess 54 to move inward. During the movement, the inner insert plate 55 will extend to the lower side of the second layer of material tray. Then, the lifting cylinder 40 is activated. Driven by the lifting cylinder 40, the two inner insert plates 55 move upward. During the movement, they will lift the second layer and the material tray above it upward. At this time, the motor 36 starts, and the lead screw 35 rotates under the drive of the motor 36. The rotation of the lead screw 35 will drive the push rod to move, and push the bottom tray to the designated position between the limit side plates 10. Then, the motor 36 drives the push rod to move to the initial position, and then the lifting cylinder 40 moves down and places the tray on the bottom plate 1. Then, the inner insert plate 55 is pulled out from the bottom tray and moves to the bottom of the second tray under the drive of the lifting cylinder 40, and waits to perform the lifting operation again.

[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A material tray feeding device for a eutectic machine, characterized in that, Includes a base plate (1), one end of which is fitted with four L-shaped limiting members (2) by screws. The material tray is placed inside the limiting members (2), and the lower end of a pair of limiting members (2) located on the inner side is provided with a material inlet / outlet notch (21). A pushing mechanism (3) is installed on the lower wall of the base plate (1); The upper end of the limiting member (2) located on the outside is provided with a lifting mechanism, which is used to lift the material tray.

2. The material tray feeding device for the eutectic machine according to claim 1, characterized in that, The upper end of the limiting member (2) is provided with an upper extension guard plate (20).

3. The material tray feeding device for the eutectic machine according to claim 2, characterized in that, The upper end of the upper extension guard plate (20) is bent outward to form an inclined plate.

4. The material tray feeding device for the eutectic machine according to claim 1, characterized in that, A pair of limiting side plates (10) are installed on the base plate (1).

5. The material tray feeding device for the eutectic machine according to claim 1, characterized in that, The pushing mechanism (3) includes a pushing base plate (30), which is bolted to the base plate (1). End seats (34) are installed at both ends of the pushing base plate (30). A pair of guide rails (31) are installed on the pushing base plate (30). A motor (36) is installed on one of the end seats (34). The output shaft of the motor (36) is connected to a lead screw (35). A movable seat (32) is threaded onto the lead screw (35). The movable seat (32) is slidably mounted on the guide rail (31). A pair of push rods are installed on the movable seat (32). A movable hole is opened on the base plate (1), and the push rods pass through the movable hole.

6. The material tray feeding device for a eutectic machine according to claim 1, characterized in that, The lifting mechanism includes a mounting base (4) installed on a limiting member (2) located on the outside. A lifting cylinder (40) is installed on the mounting base (4). An L-shaped seat (41) is installed on the movable end of the lifting cylinder (40). A concave part (42) is provided at the lower end of the L-shaped seat (41). Multiple extension rods (43) are installed on the concave part (42). An inner push cylinder (44) is installed on the outer end of the extension rod (43). An inner push strip (45) is installed on the movable end of the inner push cylinder (44). The extension rod (43) passes through the inner push strip (45). Push-pull arms (46) are installed at both ends of the inner push strip (45) by screws. A push-pull cross plate (47) is provided on the inner end of the push-pull arm (46). A transverse hole (48) is opened on the push-pull cross plate (47). The length direction of the transverse hole (48) is perpendicular to the length direction of the push-pull arm (46). A working part passes through the transverse hole (48). A lever (49) is used, and a swing arm (50) is provided at the lower end of the lever (49). A swing shaft is provided at the inner end of the swing arm (50). A rotating seat (51) is rotatably provided on the swing shaft. The inner end of the rotating seat (51) is installed at both ends of the concave part (42). An inner top plate (52) is provided eccentrically at the lower end of the swing shaft. An inner top concave part (54) is tangent to the outer periphery of the inner top plate (52). A spring pin (57) is passed through the inner top concave part (54). The outer end of the spring pin (57) is provided with an end cap, and the inner end of the spring pin (57) is connected to the concave part (42) by a thread. A spring (53) is sleeved on the spring pin (57). The inner top concave part (54) is located outside the spring (53). The inner end of the spring (53) acts on the outer wall of the concave part (42). An inner insert plate (55) is provided on the inner top concave part (54), and the inner insert plate (55) passes through the concave part (42).

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