CN216487978U

CN216487978U - Lead frame stacking mechanism

Info

Publication number: CN216487978U
Application number: CN202123246049.XU
Authority: CN
Inventors: 邹佩纯; 温正萍
Original assignee: Sichuan Xumaowei Technology Co ltd
Current assignee: Sichuan Xumaowei Technology Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-10
Anticipated expiration: 2031-12-22

Abstract

The application provides a lead frame stacking mechanism, includes: a stacking component, a rotating plate and a rotating mechanism. The stacking part comprises a pair of baffles which are vertically arranged, the baffles are parallel to each other and arranged at intervals, the surfaces, opposite to each other, of the baffles are provided with limiting grooves along the vertical direction, and the two ends of the lead frame are respectively arranged in the limiting grooves on the two sides. The rotating plates are arranged between the baffles in a pair in number, are positioned on two sides of the limiting groove in a rotating mode, when the rotating plates are in a horizontal state, the space between the opposite surfaces of the rotating plates is smaller than the width of the lead frame, and when the rotating plates rotate downwards to be in a vertical state, the space between the opposite surfaces of the rotating plates is larger than the width of the lead frame. The rotating mechanism is arranged on the outer side of the baffle at the feeding tail end of the lead frame and used for driving the rotating plates to rotate simultaneously and enabling the rotating directions of the two rotating plates to be opposite. The stacking mechanism can enable the lead frame to fall in a horizontal state, so that the lead frame can be stacked more neatly.

Description

Lead frame stacking mechanism

Technical Field

The utility model belongs to the technical field of semiconductor device production, especially, relate to a lead frame stacking mechanism.

Background

In the process of manufacturing a semiconductor packaging device by utilizing a lead frame after the lead frame is produced, a plurality of stations can stack the lead frame, and the purpose is to place the lead frame in order according to a certain quantity. The current method for stacking lead frames is to stack the lead frames in a free-falling manner during the conveying process. When stacking is carried out in the mode, the front end of the lead frame firstly falls down and is in contact with the lead frame below, and the front end of the lead frame which just falls down is often clamped by the pins of the lead frame below due to the fact that the surface of the lead frame is provided with a plurality of pins, so that the front ends of the upper lead frame and the lower lead frame cannot be aligned, and finally the lead frames are stacked unevenly.

SUMMERY OF THE UTILITY MODEL

For solving prior art not enough, the utility model provides a lead frame stacking mechanism can make the whole level state whereabouts that is of lead frame, makes the lead frame stack more neat.

In order to realize the purpose of the utility model, the following scheme is proposed:

a lead frame stacking mechanism, comprising: a stacking component, a rotating plate and a rotating mechanism.

The stacking part comprises a pair of baffles which are vertically arranged, the baffles are parallel to each other and arranged at intervals, the surfaces, opposite to each other, of the baffles are provided with limiting grooves along the vertical direction, and the two ends of the lead frame are respectively arranged in the limiting grooves on the two sides.

The rotating plates are arranged between the baffles in a pair in number, are positioned on two sides of the limiting groove in a rotating mode, when the rotating plates are in a horizontal state, the space between the opposite surfaces of the rotating plates is smaller than the width of the lead frame, and when the rotating plates rotate downwards to be in a vertical state, the space between the opposite surfaces of the rotating plates is larger than the width of the lead frame.

The rotating mechanism is arranged on the outer side of the baffle at the feeding tail end of the lead frame and used for driving the rotating plates to rotate simultaneously and enabling the rotating directions of the two rotating plates to be opposite.

Furthermore, a conveying roller set is arranged on the outer side of the baffle positioned at the feeding end of the lead frame, and the top of the conveying roller set is higher than the top of the rotating plate in a horizontal state.

Furthermore, a detection switch is arranged on the side wall of the baffle plate at the feeding tail end of the lead frame in a penetrating mode and used for detecting in-place signals of the lead frame.

Further, rotary mechanism includes the guide arm that the level set up, it is equipped with two sliders to slide on the guide arm, the lateral wall of slider is equipped with the round pin axle, the one end of rotor plate all is equipped with the dwang, on the projection of rotor plate rotation axis direction, 45 contained angles have between dwang and the rotor plate, the bar hole has been seted up along length direction to the dwang, it is downthehole that the round pin axle is worn to locate the bar, two sliders slide simultaneously along the same or opposite direction on the guide arm.

Further, rotary mechanism still includes the telescoping device, and the push rod perpendicular to guide arm of telescoping device, the push rod front end of telescoping device are equipped with articulated seat, and articulated seat has a pair of bracing piece, and the front end of bracing piece rotates respectively to be connected in the bottom of two sliders.

The beneficial effects of the utility model reside in that: the rotating plate is used for supporting the lead frame and controlling the falling time of the lead frame during stacking, so that the lead frame falls in a horizontal state, pins of the lead frame below are prevented from clamping the lead frame in the falling state, and the limiting groove is used for limiting the lead frame, so that the lead frame is stacked more neatly.

Drawings

The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

Fig. 1 shows an overall structural view of the present application.

Fig. 2 shows an enlarged view at a in fig. 1.

Fig. 3 shows an enlarged view at B in fig. 1.

Fig. 4 shows a structural view of the present application with the pivotal plate in an upright position.

Fig. 5 shows a structural view of the present application when the board is rotated to carry the lead frame.

The labels in the figure are: the device comprises a stacking part-10, a baffle-11, a limiting groove-111, a conveying roller group-12, a detection switch-13, a rotating plate-20, a rotating rod-21, a strip-shaped hole-211, a rotating mechanism-30, a guide rod-31, a sliding block-32, a pin shaft-321, a telescopic device-33, a hinge seat-331 and a supporting rod-34.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, but the described embodiments of the present invention are some embodiments of the present invention, not all embodiments.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the product of the present invention is usually placed when in use, and this is only for the convenience of description of the present invention and simplification of the description. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, 3 and 5, a lead frame stacking mechanism includes: a stacking member 10, a rotating plate 20, and a rotating mechanism 30.

Specifically, windrow part 10 is including being a pair of baffle 11 of vertical setting, and baffle 11 is parallel to each other and the interval sets up, and spacing groove 111 has been seted up along vertical direction on the surface that baffle 11 is relative, and the spacing inslot 111 of both sides is located respectively at the both ends of lead frame.

Specifically, the rotating plates 20 are in a pair in number, are rotatably arranged between the baffle plates 11, and are located on two sides of the limiting groove 111, when the rotating plates 20 are in a horizontal state, the distance between the opposite surfaces of the rotating plates 20 is smaller than the width of the lead frame, the lead frame can be horizontally placed on the top surface of the rotating plates 20 at the moment, when the rotating plates 20 rotate downwards to be in a vertical state, the distance between the opposite surfaces of the rotating plates 20 is larger than the width of the lead frame, the lead frame can fall from the rotating plates 20 at the moment, and falls along the limiting groove 111, and stacking is achieved. The lead frames may be pushed onto the rotating plate 20 in the direction indicated by the arrow in fig. 1 by a conveyor belt or pusher.

Specifically, the rotating mechanism 30 is disposed outside the baffle 11 at the feeding end of the lead frame, and is used for driving the rotating plates 20 to rotate simultaneously, and the rotating directions of the two rotating plates 20 are opposite.

Preferably, as shown in fig. 1 and 4, a conveying roller group 12 is arranged outside the baffle 11 at the feeding end of the lead frame, and the top of the conveying roller group 12 is higher than the top of the rotating plate 20 in a horizontal state, so that the lead frame can be conveyed onto the rotating plate 20 conveniently.

Preferably, a detection switch 13 is arranged on the side wall of the baffle 11 at the feeding end of the lead frame in a penetrating manner and used for detecting an in-place signal of the lead frame, and the rotating mechanism 30 can control the rotating plate 20 to rotate according to the in-place signal of the lead frame detected by the detection switch 13, so that the rotating plate 20 rotates to a vertical state, the lead frame falls down in a horizontal state, two ends and two sides of the lead frame fall down simultaneously, and the lead frame is prevented from being clamped by pins of the lead frame below.

More specifically, as shown in fig. 2, the rotating mechanism 30 includes a guide rod 31 horizontally disposed, two sliding blocks 32 are slidably disposed on the guide rod 31, a pin 321 is disposed on a side wall of the sliding block 32, the pin 321 is parallel to a rotation axis of the rotating plate 20, a rotating rod 21 is disposed at one end of the rotating plate 20, and an included angle of 45 ° is formed between the rotating rod 21 and the rotating plate 20 in a projection of a rotation axis direction of the rotating plate 20. When the rotating plate 20 is in a horizontal state, i.e. a vertical state, the acute included angles between the rotating rod 21 and the horizontal plane are both 45 °, and only the inclination directions of the rotating rod 21 are opposite.

More specifically, the BAR hole 211 has been seted up along length direction to dwang 21, the round pin axle 321 wears to locate in the BAR hole 211, two sliders 32 slide simultaneously along the same or opposite direction on guide arm 31, slider 32 when sliding along with guide arm 31, accessible round pin axle 321 drives dwang 21 and rotates, thereby make two rotor plates 20 rotate simultaneously along opposite soon, in-process round pin axle 321 slides in BAR hole 211, in order to adapt to the change of interval between round pin axle 321 and the rotor plate 20 axis of rotation.

More specifically, as shown in fig. 3, the rotating mechanism 30 further includes a telescopic device 33, a push rod of the telescopic device 33 is perpendicular to the guide rod 31, a hinge seat 331 is disposed at a front end of the push rod of the telescopic device, the hinge seat 331 is hinged to a pair of support rods 34, and front ends of the support rods 34 are respectively rotatably connected to bottoms of the two sliders 32.

In use, the telescopic device 33 controls the hinge base 331 to move in a direction perpendicular to the guide rod 31, so that the support rods 34 push or pull the sliding blocks 32 to slide on the guide rod 31, thereby rotating the rotating plate 20, and due to the triangular configuration between the two support rods 34 and the guide rod 31, when the hinge base 331 moves, the two support rods 34 are simultaneously opened or simultaneously closed, so that the two sliding blocks 32 slide on the guide rod 31 in the same or opposite directions.

The foregoing is only a preferred embodiment of the invention and is not intended to be the only or limiting embodiment of the invention. It should be understood by those skilled in the art that various changes and equivalent substitutions made herein may be made without departing from the scope of the invention as defined by the appended claims.

Claims

1. A lead frame stacking mechanism, comprising:

the stacking part (10) comprises a pair of baffle plates (11) which are vertically arranged, the baffle plates (11) are mutually parallel and are arranged at intervals, limiting grooves (111) are formed in the opposite surfaces of the baffle plates (11) along the vertical direction, and two ends of the lead frame are respectively arranged in the limiting grooves (111) on the two sides;

the rotating plates (20) are arranged between the baffle plates (11) in a pair in number and are positioned on two sides of the limiting groove (111), when the rotating plates (20) are in a horizontal state, the distance between the opposite surfaces of the rotating plates (20) is smaller than the width of the lead frame, and when the rotating plates (20) rotate downwards to be in a vertical state, the distance between the opposite surfaces of the rotating plates (20) is larger than the width of the lead frame;

and the rotating mechanism (30) is arranged outside the baffle (11) at the feeding tail end of the lead frame and is used for driving the rotating plates (20) to rotate simultaneously and enabling the rotating directions of the two rotating plates (20) to be opposite.

2. Lead frame stacking mechanism according to claim 1, characterized in that the outside of the baffle plate (11) at the lead frame feeding end is provided with a set of conveyor rollers (12), the top of the set of conveyor rollers (12) is higher than the top of the rotating plate (20) in a horizontal position.

3. Lead frame stacking mechanism according to claim 1, characterized in that the side wall of the stop plate (11) at the feeding end of the lead frames is provided with a detection switch (13) for detecting the lead frame in-position signal.

4. The lead frame stacking mechanism according to claim 1, wherein the rotating mechanism (30) comprises a guide rod (31) which is horizontally arranged, two sliding blocks (32) are arranged on the guide rod (31) in a sliding manner, a pin shaft (321) is arranged on the side wall of each sliding block (32), a rotating rod (21) is arranged at one end of each rotating plate (20), a 45-degree included angle is formed between each rotating rod (21) and each rotating plate (20) in the projection of the rotating axis direction of each rotating plate (20), a strip-shaped hole (211) is formed in each rotating rod (21) in the length direction, the pin shaft (321) penetrates through the strip-shaped holes (211), and the two sliding blocks (32) slide on the guide rod (31) in the same or opposite directions simultaneously.

5. Lead frame stacking mechanism according to claim 4, wherein the rotating mechanism (30) further comprises a telescopic device (33), a push rod of the telescopic device (33) is perpendicular to the guide rod (31), a hinge seat (331) is provided at a front end of the push rod of the telescopic device, the hinge seat (331) is hinged with a pair of support rods (34), and front ends of the support rods (34) are respectively rotatably connected to bottoms of the two sliding blocks (32).