CN214378376U

CN214378376U - Feeding mechanism of semiconductor lead frame material box

Info

Publication number: CN214378376U
Application number: CN202120659282.1U
Authority: CN
Inventors: 李蛇宏; 杨益东
Original assignee: Sichuan Mingtai Microelectronics Co ltd
Current assignee: Sichuan Mingtai Microelectronics Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-10-08
Anticipated expiration: 2031-03-31

Abstract

The application provides a feed mechanism of semiconductor lead frame magazine includes: the temporary storage platform is used for arranging and storing the material boxes along the conveying direction; the stop pin assembly is at least provided with one group and is arranged at the outlet end of the temporary storage platform, the stop pin assembly comprises a stop pin, the stop pin is arranged in a sliding manner along the vertical direction, and the stop pin and the temporary storage platform are arranged at intervals on the projection view of the bottom surface of the temporary storage platform; the exit end of platform of keeping in is located to the centre gripping subassembly, the direction removal setting of platform is kept in along the perpendicular to the centre gripping subassembly, centre gripping subassembly bottom is equipped with support piece, support piece's top surface is parallel with the platform of keeping in, support piece covers the backing pin on the projection of centre gripping subassembly moving direction, the centre gripping subassembly top is equipped with compresses tightly the subassembly, it includes connecting block and briquetting to compress tightly the subassembly, the briquetting rotates to be connected in the below of connecting block, be equipped with elastic element between connecting block and the briquetting, be used for the centre gripping magazine between the top surface of support piece and the bottom surface of briquetting. The automatic material box placing device has the advantages that the material box can be automatically placed, the structure is simple, and the production efficiency can be effectively improved.

Description

Feeding mechanism of semiconductor lead frame material box

Technical Field

The utility model belongs to semiconductor manufacturing field especially relates to a feed mechanism of semiconductor lead frame magazine.

Background

The processes of gluing, core sticking, assembling, welding and the like are required to be carried out on the lead frame before the semiconductor packaging, the lead frame is often required to be transferred in the processes, the lead frame is of a sheet structure, the material box is adopted to store and transfer most of the time, the material box is placed in the mode of placing workers in most of the existing equipment, when the lead frame in the material box is completely output, the lead frame is manually replaced, and an operator needs to frequently replace the material box, so that the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

For solving prior art not enough, the utility model provides a feed mechanism of semiconductor lead frame magazine can realize laying the magazine automatically, and simple structure can effectively improve production efficiency, reduces the frequent operation of operator.

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

a feeding mechanism of a semiconductor lead frame material box comprises: temporary storage platform, backing pin subassembly and centre gripping subassembly.

The temporary storage platform is used for arranging and storing the material boxes along the conveying direction;

the temporary storage platform is provided with a plurality of groups of stop pin assemblies, each stop pin assembly is arranged at the outlet end of the temporary storage platform and comprises stop pins, the stop pins are arranged in a sliding mode along the vertical direction, and the stop pins and the temporary storage platform are arranged at intervals on the projection view of the bottom surface of the temporary storage platform;

the centre gripping subassembly is located the exit end of platform of keeping in, the centre gripping subassembly is along the direction removal setting of perpendicular to platform of keeping in, centre gripping subassembly bottom is equipped with support piece, support piece's top surface with the platform of keeping in is parallel in the projection of centre gripping subassembly moving direction support piece will the backing pin covers, centre gripping subassembly top is equipped with compresses tightly the subassembly, compress tightly the subassembly and include connecting block and briquetting, the briquetting rotate connect in the below of connecting block, the connecting block with be equipped with elastic element between the briquetting, support piece's top surface with be used for the centre gripping between the bottom surface of briquetting the magazine.

Further, the clamping assembly further comprises a side plate, the supporting piece is arranged at the bottom of the side plate, and the connecting block is arranged at the top of the side plate.

Further, the centre gripping subassembly passes through the curb plate is connected in linear electric motor, linear electric motor is along the perpendicular to the direction setting of platform of keeping in, proximity switch is installed to the curb plate.

Furthermore, side baffles are arranged on the temporary storage platform along two sides of the material box in the conveying direction.

Further, the temporary storage platform adopts a conveying belt or a pushing cylinder to convey the material box.

Furthermore, one side of the top of the stop pin, which faces the temporary storage platform, is provided with an inclined surface, and the projection of the stop pin along the moving direction is of a rectangular structure.

Further, the backing pin subassembly still includes guide holder and spring, the guide holder top is equipped with the guiding hole, the spring is located in the guiding hole, backing pin sliding fit with in the guiding hole, stop screw is worn to be equipped with by the guide holder lateral wall, the backing pin lateral wall corresponds stop screw has the spout, stop screw front end slides to inlay and locates in the spout, the spout is followed the moving direction setting of backing pin, and runs through the top of backing pin.

Further, in the process that the material box moves from the temporary storage platform to the clamping assembly, the top surface of the supporting piece is not higher than the top surface of the temporary storage platform, and the bottom surface of the supporting piece is in contact with the top surface of the guide seat.

Furthermore, the elastic element is of a spring piece structure.

Furthermore, the bottom of the pressing block is of an arc-shaped structure protruding downwards.

The beneficial effects of the utility model reside in that:

1. can replace the manual work, realize automatic magazine of placing, improve production efficiency, the operator only need once only with a plurality of magazines that are equipped with the lead frame place on the platform of keeping in can, the platform of keeping in carries the magazine through conveyor belt or push cylinder, makes the magazine get into the centre gripping subassembly smoothly, the centre gripping subassembly utilizes the briquetting to compress tightly the magazine, the centre gripping subassembly detects whether the magazine removes the target in place through proximity switch to remove the magazine through linear electric motor.

2. The exit end of platform of keeping in is equipped with the backing pin subassembly, but the backing pin rises automatically after the centre gripping subassembly leaves the year station that moves of magazine, blocks spacingly still being in the magazine on the platform of keeping in, prevents that the magazine on the platform of keeping in from dropping to utilize support piece to push down the backing pin when the centre gripping subassembly descends, make the backing pin break away from the stopping to the magazine on the platform of keeping in, temporary storage mechanism alright move the magazine to centre gripping subassembly and carry, the structural design of backing pin is simple, and the function is effective reliable.

3. The clamping assembly clamps the material box between the support piece and the pressing block, the pressing block compresses the material box by using the pressure provided by the elastic element, the structure of the pressing assembly is simple, the use of an automatic pressing device is reduced, and the manufacturing cost and the maintenance cost of the mechanism are reduced.

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 the overall construction of the present application;

FIG. 2 illustrates a side view of one embodiment of the present application;

FIG. 3 shows a state diagram in which the stop pin blocks a magazine on the buffer platform;

FIG. 4 shows a partial enlarged view at A in FIG. 3;

FIG. 5 shows an exploded view of the structure of the stop pin assembly;

fig. 6 shows an exploded view of the structure of the hold-down assembly.

The labels in the figure are: the device comprises a material box 1, a temporary storage platform 10, a side baffle 11, a stop pin assembly 20, a stop pin 21, a slope 211, a chute 212, a guide seat 22, a guide hole 221, a spring 23, a limit screw 24, a clamping assembly 30, a support 31, a side plate 32, a proximity switch 33, a pressing assembly 40, a connecting block 41, a pressing block 42, an elastic element 43 and a linear motor 50.

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, a feeding mechanism for a semiconductor lead frame magazine comprises: staging platform 10, stop pin assembly 20, and clamp assembly 30.

The buffer platform 10 serves to store the magazine 1 in an aligned manner in the conveying direction.

Stop pin subassembly 20 is equipped with a set ofly at least, locates the exit end of platform 10 of keeping in, and stop pin subassembly 20 includes stop pin 21, and stop pin 21 slides along vertical direction and sets up, and stop pin 21 is the interval setting with platform 10 of keeping in on the projection view of platform 10 bottom surface, and stop pin 21 is used for spacing magazine 1 on the platform 10 of keeping in to prevent that magazine 1 from dropping.

The exit end of platform 10 is located to centre gripping subassembly 30, centre gripping subassembly 30 moves the setting along the direction of perpendicular to platform 10, centre gripping subassembly 30 bottom is equipped with support piece 31, support piece 31 can adopt many rod-like structures as shown in fig. 1, also can adopt the flat structure, support piece 31's top surface is parallel with platform 10, support piece 31 covers backing pin 21 on the projection of centre gripping subassembly 30 moving direction, centre gripping subassembly 30 top is equipped with compresses tightly subassembly 40, compress tightly subassembly 40 and include connecting block 41 and briquetting 42, briquetting 42 rotates and connects in the below of connecting block 41, be equipped with elastic element 43 between connecting block 41 and the briquetting 42, be used for centre gripping magazine 1 between support piece 31's the top surface and the bottom surface of briquetting 42.

More specifically, as shown in fig. 1, the clamping assembly 30 further includes a side plate 32, the supporting member 31 is disposed at the bottom of the side plate 32, and the connecting block 41 is mounted at the top of the side plate 32.

More specifically, the clamping assembly 30 is connected to the linear motor 50 through the side plate 32, the linear motor 50 is arranged along the direction perpendicular to the temporary storage platform 10, the linear motor 50 is used for driving the clamping assembly 30 to move along the up-down direction, so that the lead frames in the material box 1 are sequentially fed along the up-down direction, and the side plate 32 is provided with the proximity switch 33 for detecting whether the material box 1 moves in place.

Preferably, as shown in fig. 1, side baffles 11 are arranged on both sides of the temporary storage platform 10 along the conveying direction of the magazine 1, for limiting the buffer position of the magazine 1.

More specifically, the temporary storage platform 10 uses a conveying belt or a pushing cylinder to convey the material box 1. In the embodiment, as shown in fig. 2 or fig. 3, a pair of belts 2 arranged in parallel is used to convey the magazine 1, and the belts 2 are distributed in the middle of the temporary storage platform 10. When the magazine is transferred, the magazine 1 at the front end can be pushed by the magazine 1 at the rear end to move towards the clamping assembly 30 until the proximity switch 33 senses the in-place signal of the magazine 1. Compared with the air cylinder pushing, the system does not need to accurately control the extending length of the air cylinder push rod, and is simpler in system setting.

Preferably, as shown in fig. 4 and 5, the side of the top of the stop pin 21 facing the buffer platform 10 has a slope 211, and during the raising of the stop pin 21, the slope 211 will first contact the first magazine 1 at the outlet end of the buffer platform 10, so that the stop pin 21 is raised smoothly, and at the same time, the first magazine 1 is prevented from being lifted. The projection of the catch pin 21 in the moving direction has a rectangular configuration to prevent its rotation from changing the orientation of the inclined surface 211. When the stop pin 21 is completely raised, the inclined surface 211 is higher than the bottom surface of the magazine 1 on the buffer platform 10, and the magazine 1 is stopped by the side wall.

More specifically, as shown in fig. 5, the stop pin assembly 20 further includes a guide seat 22 and a spring 23, a guide hole 221 is formed at the top of the guide seat 22, and the cross section of the guide hole 221 has the same structure as that of the stop pin 21. The spring 23 is disposed in the guide hole 221, and the stopper pin 21 is slidably fitted in the guide hole 221. The lateral wall of the guide seat 22 is provided with a limit screw 24 in a penetrating way, the lateral wall of the stop pin 21 is provided with a sliding groove 212 corresponding to the limit screw 24, the front end of the limit screw 24 is embedded in the sliding groove 212 in a sliding way, the sliding groove 212 is arranged along the moving direction of the stop pin 21 and penetrates through the top of the stop pin 21, so that the stop pin 21 is sunk into the guide hole 221 completely, and the sliding groove 212 does not penetrate through the bottom of the stop pin 21 to prevent the stop pin 21 from falling off.

Preferably, the top surface of support member 31 is not higher than the top surface of staging platform 10 during the movement of magazine 1 from staging platform 10 to clamping assembly 30, so that the magazine can smoothly enter clamping assembly 30. As shown in fig. 2, during the process of transferring the magazine 1 from the temporary storage platform 10 to the clamping assembly 30, the bottom surface of the supporting member 31 contacts the top surface of the guiding seat 22, and the guiding seat 22 is used to limit the clamping assembly 30, so as to further improve the position accuracy of the clamping assembly 30.

Preferably, the elastic element 43 is a spring plate structure as shown in fig. 6, and is fixed by screws for easy replacement, and the spring plate structure is adopted to facilitate installation, fixation and detachment compared with the elastic element of a cylindrical spring structure.

Preferably, the bottom of the pressing block 42 is an arc structure protruding downwards, as shown in fig. 6, the projection of the arc structure protruding downwards on the bottom surface is a rectangular structure, and the projection of the length direction on the bottom surface of the mechanism is parallel to the conveying direction of the temporary storage platform 10, so that the magazine 1 can slide into the bottom of the pressing block 42. The arc structure protruding downwards at the bottom of the pressing block 42 can also adopt a hemispherical structure, and the material box 1 can smoothly slide into the bottom of the pressing block 42 when entering the clamping assembly 30 from any direction.

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 feeding mechanism of a semiconductor lead frame material box is characterized by comprising:

the temporary storage platform (10) is used for arranging and storing the material boxes (1) along the conveying direction;

the stop pin assemblies (20) are at least provided with one group and are arranged at the outlet end of the temporary storage platform (10), each stop pin assembly (20) comprises a stop pin (21), each stop pin (21) is arranged in a sliding mode along the vertical direction, and the stop pins (21) and the temporary storage platform (10) are arranged at intervals on the projection view of the bottom surface of the temporary storage platform (10);

the clamping component (30) is arranged at the outlet end of the temporary storage platform (10), the clamping component (30) is movably arranged along the direction vertical to the temporary storage platform (10), a supporting piece (31) is arranged at the bottom of the clamping component (30), the top surface of the supporting piece (31) is parallel to the temporary storage platform (10), the support (31) covers the stop pin (21) in a projection of the direction of movement of the clamping assembly (30), the top of the clamping component (30) is provided with a pressing component (40), the pressing component (40) comprises a connecting block (41) and a pressing block (42), the pressing block (42) is rotationally connected below the connecting block (41), an elastic element (43) is arranged between the connecting block (41) and the pressing block (42), the top surface of the support (31) and the bottom surface of the pressing block (42) are used for clamping the material box (1).

2. The feeding mechanism of the semiconductor lead frame magazine as claimed in claim 1, wherein the clamping assembly (30) further comprises a side plate (32), the support member (31) is disposed at the bottom of the side plate (32), and the connecting block (41) is mounted on the top of the side plate (32).

3. The feeding mechanism of the semiconductor lead frame magazine as claimed in claim 2, wherein the clamping assembly (30) is connected to a linear motor (50) through the side plate (32), the linear motor (50) is arranged along a direction perpendicular to the temporary storage platform (10), and the side plate (32) is provided with a proximity switch (33).

4. The feeding mechanism of the semiconductor lead frame magazine according to claim 1, characterized in that the temporary storage platform (10) is provided with side baffles (11) along two sides of the magazine (1) in the conveying direction.

5. The feeding mechanism of the semiconductor lead frame magazine according to claim 1, characterized in that the temporary storage platform (10) adopts a conveying belt or a pushing cylinder to convey the magazine (1).

6. The feeding mechanism of the semiconductor lead frame magazine as claimed in claim 1, wherein the top of the stop pin (21) has a slope (211) towards the side of the temporary storage platform (10), and the projection of the stop pin (21) along the moving direction is in a rectangular structure.

7. The feeding mechanism of the semiconductor lead frame magazine according to claim 1, wherein the stop pin assembly (20) further comprises a guide seat (22) and a spring (23), a guide hole (221) is formed in the top of the guide seat (22), the spring (23) is arranged in the guide hole (221), the stop pin (21) is in sliding fit with the guide hole (221), a limit screw (24) is arranged on the side wall of the guide seat (22) in a penetrating manner, the side wall of the stop pin (21) corresponds to the limit screw (24) and is provided with a sliding groove (212), the front end of the limit screw (24) is embedded in the sliding groove (212) in a sliding manner, and the sliding groove (212) is arranged along the moving direction of the stop pin (21) and penetrates through the top of the stop pin (21).

8. The feeding mechanism of the semiconductor lead frame magazine as claimed in claim 7, wherein during the movement of the magazine (1) from the staging platform (10) to the clamping assembly (30), the top surface of the support member (31) is no higher than the top surface of the staging platform (10), and the bottom surface of the support member (31) contacts the top surface of the guide seat (22).

9. The feeding mechanism of semiconductor lead frame magazine according to claim 1, characterized in that the elastic element (43) is a leaf spring structure.

10. The feeding mechanism of the semiconductor lead frame magazine as claimed in claim 1, wherein the bottom of the pressing block (42) is of an arc-shaped structure protruding downwards.