CN218775277U

CN218775277U - Lead frame belt cleaning device

Info

Publication number: CN218775277U
Application number: CN202223470750.4U
Authority: CN
Inventors: 曾尚文; 陈久元; 杨利明
Original assignee: Sichuan Jinghui Semiconductor Co ltd
Current assignee: Sichuan Jinghui Semiconductor Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-03-31
Anticipated expiration: 2032-12-26

Abstract

The application provides a lead frame belt cleaning device includes: wash pond, swivel mount, washing basket, feeding track and ejection of compact track. On the swivel mount rotated to be located the washing pond, the swivel mount was equipped with four washing baskets along the circumference array, and the washing basket runs through along length direction's both ends, and has seted up many pairs of holding tanks on the inner wall of its both sides, and the both ends of holding tank all are equipped with rotatable baffle. The feeding track and the discharging track are respectively positioned on two sides of the rotating frame. The outer side of the feeding track is provided with a first push plate which is used for pushing the lead frames in the same material box on the feeding track into the cleaning basket which is at the corresponding side and in a horizontal state. And a second push plate is arranged among the four cleaning baskets and used for simultaneously pushing out the lead frames in the other cleaning basket in the horizontal state and simultaneously pushing the lead frames into an empty material box on the discharging rail. Has higher cleaning efficiency.

Description

Lead frame belt cleaning device

Technical Field

The utility model belongs to the technical field of the lead frame cleaning equipment, especially, relate to a lead frame belt cleaning device.

Background

In the production process, the lead frame is generally stored and transferred by using a transfer device for an optocoupler lead support as disclosed in patent application No. 202021318807.7, and the lead frame is mainly used as a carrier for producing semiconductor devices, so that the requirement on cleanliness is high. The existing cleaning device needs to push the lead frame out of the transfer device one by one, then the lead frame is cleaned one by one through the conveyor belt type cleaning machine, and the lead frame is pushed into the transfer device one by one after cleaning.

SUMMERY OF THE UTILITY MODEL

For solving the prior art not enough, the utility model provides a lead frame belt cleaning device has higher cleaning efficiency.

In order to realize the purpose of the utility model, the following scheme is planned to be adopted:

a lead frame cleaning device comprising: wash pond, swivel mount, washing basket, feeding track and ejection of compact track.

On the swivel mount rotated to be located the washing pond, its pivoted axis was the level setting, and the swivel mount was equipped with four washing baskets along the circumference array, washs the rotation axis of the length direction perpendicular to swivel mount of basket, washs the basket and runs through along length direction's both ends, and has seted up many pairs of holding tanks on the inner wall of its both sides, and the holding tank is on a parallel with the length direction who washs the basket, and the both ends of holding tank all are equipped with rotatable baffle.

The feeding track and the discharging track are respectively positioned on two sides of the rotating frame, are used for conveying material boxes provided with lead frames to be cleaned, and are parallel to the rotating axis of the rotating frame in the conveying direction.

The outer side of the feeding track is provided with a first push plate which is used for pushing the lead frames in the same material box on the feeding track into the cleaning basket which is at the corresponding side and in a horizontal state.

And a second push plate is arranged between the four cleaning baskets and used for simultaneously pushing out the lead frames in the other cleaning basket in the horizontal state and simultaneously pushing the lead frames into the empty material box on the discharging rail.

Furthermore, the first push plate and the second push plate are respectively arranged at the movable end of a telescopic cylinder.

Further, feeding track and ejection of compact track are gyro wheel transport structure, and all adopt motor drive.

Further, the position that the feeding track corresponds the lead frame of release and the position that the lead frame was accepted to ejection of compact track correspondence all is equipped with detection switch.

Furthermore, first push pedal and second push pedal are the flat structure that is vertical setting, and the width of first push pedal and second push pedal all is less than the width of lead frame, and the height of first push pedal and second push pedal covers range upon range of all lead frames in the magazine, and is less than the empty altitude of magazine and washing basket.

Further, four angles of washing basket respectively wear to be equipped with a connecting rod corresponding to the tip of holding tank, and the connecting rod perpendicular to washs the bottom surface of basket, and the connecting rod is located in the baffle all rotation.

Further, the one end middle part that baffle and connecting rod are connected has the breach, and correspondence breach department is equipped with the spring leaf of U type structure, and two blocks of curb plates of spring leaf are located the both sides of baffle, and the connecting rod is located between two blocks of curb plates of spring leaf, and the bottom plate of spring leaf and the inside wall laminating of holding tank.

The beneficial effects of the utility model reside in that: through the four cleaning baskets arranged in the circumferential array, when the lead frame in one cleaning basket is cleaned, one of the other pair of cleaning baskets in the horizontal state is loaded into the lead frame to be cleaned, and the lead frame which is cleaned in the other cleaning basket in the horizontal state is pushed out at the same time, so that the waiting time among feeding, cleaning and discharging is reduced; and each cleaning basket can hold a plurality of lead frames simultaneously, can realize simultaneously carrying out pay-off, washing and ejection of compact to a plurality of lead frames to improve abluent efficiency.

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 diagram of the present application.

Fig. 2 shows a schematic view of the use state of the present application.

Fig. 3 shows a schematic structural view of the cleaning basket of the present application.

Fig. 4 shows a partial enlarged view at a in fig. 3.

Fig. 5 is a view showing the structure and the positional relationship of the damper and the spring plate.

Fig. 6 shows a schematic representation of the lead frame discharge in the cleaning basket.

Fig. 7 shows a partial enlarged view at B in fig. 6.

FIG. 8 is a schematic view showing the state of the shutter when the lead frame is pushed into the cleaning basket.

The labels in the figure are: the device comprises a cleaning pool-1, a rotating frame-2, a cleaning basket-3, a holding tank-301, a baffle-31, a connecting rod-32, a spring piece-33, a feeding track-4, a first push plate-41, a discharging track-5, a second push plate-51 and a detection switch-6.

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.

A lead frame cleaning device comprising: cleaning pool 1, rotating frame 2, cleaning basket 3, feeding track 4 and discharging track 5.

Specifically, as shown in fig. 1 and 2, the cleaning tank 1 has a rectangular parallelepiped structure.

Specifically, as shown in fig. 1 to 4, the rotating frame 2 is rotatably disposed on the cleaning tank 1, a rotating axis of the rotating frame is horizontally disposed, the rotating frame 2 is driven by a motor, the rotating frame 2 is provided with four cleaning baskets 3 along a circumferential array, a length direction of each cleaning basket 3 is perpendicular to a rotating axis of the rotating frame 2, two ends of each cleaning basket 3 along the length direction penetrate through the inner walls of the two sides, and a plurality of pairs of accommodating grooves 301 are formed in the inner walls of the two sides of each cleaning basket, the accommodating grooves 301 are parallel to the length direction of the cleaning baskets 3, rotatable baffles 31 are arranged at two ends of each accommodating groove 301, the baffles 31 cover the end portions of the accommodating grooves 301 in a normal state, so as to block lead frames in the cleaning baskets 3, the baffles are prevented from falling out from the end portions of the accommodating grooves 301 when the rotating frame 2 rotates, the baffles 31 are rotatably disposed, in the process of pushing or pushing out the lead frames, the baffles 31 can be pushed to rotate by the lead frames, thereby facilitating pushing and pushing the lead frames, the baffles 31 can be rotated in a manner of setting a torsion spring, and can be automatically reset to the normal state.

Specifically, as shown in fig. 1 and 2, the feeding rail 4 and the discharging rail 5 are respectively located at two sides of the rotating frame 2, and are both used for conveying the material boxes containing the lead frames to be cleaned, and the conveying directions are both parallel to the rotation axis of the rotating frame 2. Feeding track 4 and ejection of compact track 5 are gyro wheel transport structure, and all adopt motor drive to realize automatic transport, thereby improve degree of automation and cleaning efficiency.

Specifically, as shown in fig. 1 and 2, a first pushing plate 41 is disposed outside the feeding rail 4, and is used for pushing the lead frames in the same magazine on the feeding rail 4 into the horizontal cleaning basket 3 on the corresponding side. And a second push plate 51 is arranged among the four cleaning baskets 3 and used for simultaneously pushing out the lead frames in the other cleaning basket 3 in a horizontal state and simultaneously pushing the lead frames into an empty material box on the discharging rail 5.

Preferably, as shown in fig. 1 and 2, the first push plate 41 and the second push plate 51 are respectively disposed at the movable end of a telescopic cylinder for driving, the two telescopic cylinders are horizontally disposed, wherein the telescopic cylinder connected to the first push plate 41 is disposed on the outer wall of the feeding track 4 through a bracket, and the telescopic cylinder connected to the second push plate 51 is connected to the side wall of the cleaning tank 1 through a bracket.

Preferably, as shown in fig. 1 and 2, the position of the feeding rail 4 corresponding to pushing out the lead frame and the position of the discharging rail 5 corresponding to receiving the lead frame are both provided with a detection switch 6 to determine that the magazine is in place, so as to ensure that the magazine is aligned with the cleaning basket 3, and the detection switch 6 is a proximity switch and can be arranged on the side wall or the bottom of the feeding rail 4 and the discharging rail 5.

Preferably, as shown in fig. 2, the first pushing plate 41 and the second pushing plate 51 are both vertically arranged flat plate structures, and the widths of the first pushing plate 41 and the second pushing plate 51 are both smaller than the width of the lead frame, and the heights of the first pushing plate 41 and the second pushing plate 51 cover all the lead frames stacked in the magazine and are smaller than the inner space height of the magazine and the cleaning basket 3, so that the first pushing plate 41 can simultaneously push all the lead frames in the magazine and the second pushing plate 51 can simultaneously push all the lead frames in the cleaning basket 3.

Preferably, the connecting rod 32 is respectively worn to be equipped with by the tip that holds tank 301 corresponds to four angles of washing basket 3, and the bottom surface of basket 3 is washd to connecting rod 32 perpendicular to, as shown in fig. 4, connecting rod 32 is all rotated to baffle 31 and is located connecting rod 32, utilizes a connecting rod 32 to connect all baffles 31 of holding tank 301 with the one end simultaneously, and not only part is small in quantity, and convenient equipment moreover can also guarantee that all baffles 31's axis of rotation is coaxial simultaneously to guarantee baffle 31's mounted position precision.

Preferably, as shown in fig. 5, a gap is formed in the middle of one end of the baffle plate 31 connected to the connecting rod 32, a spring plate 33 with a U-shaped structure is disposed at the corresponding gap, two side plates of the spring plate 33 are located at two sides of the baffle plate 31, the connecting rod 32 is located between the two side plates of the spring plate 33, and a bottom plate of the spring plate 33 is attached to the inner side wall of the accommodating groove 301 to prevent the spring plate 33 from rotating around the connecting rod 32. As shown in fig. 7 and 8, when the baffle 31 is pushed to rotate to one side, the side plates of the spring strips 33 on the corresponding side are expanded outwards, and after the force pushing the baffle 31 disappears, the expanded side plates of the spring strips 33 recover to be deformed, so that the baffle 31 is driven to reset, and the structure can meet the requirement that the baffle 31 rotates to the two ends of the accommodating groove 301, and can reset by itself after the pushing force disappears.

The specific implementation mode is as follows:

when the cleaning machine works, a material box provided with lead frames to be cleaned is fed from one end of a feeding rail 4, the material box stops moving when moving to a preset position on the feeding rail 4, a motor drives a rotating frame 2 to enable a pair of cleaning baskets 3 to be in a horizontal state, at the moment, the cleaning baskets 3 close to the feeding rail 4 are aligned with the material box which stops moving, a telescopic device drives a first push plate 41 to move, all the lead frames in the material box are simultaneously pushed to the cleaning baskets 3 close to the feeding rail 4, as shown in the pushing process of fig. 8, the lead frames push a baffle plate 31, the baffle plate 31 rotates to avoid the lead frames, and the direction shown by arrows in fig. 8 is the moving direction of the lead frames; when the lead frame is completely pushed into the cleaning basket 3, the baffle plate 31 automatically resets to block the lead frame to prevent the lead frame from falling off, and then the first push plate 41 can be drawn out; then the rotating frame 2 is rotated, the cleaning basket 3 provided with the lead frame is rotated downwards to the cleaning pool 1 for cleaning, and after the cleaning is finished, the rotating frame 2 is continuously rotated, so that the cleaning basket 3 provided with the cleaned lead frame is rotated to one side of the discharging rail 5; the other telescopic device drives the second push plate 51 to move, the lead frame cleaned in the cleaning basket 3 is pushed out, and the lead frame is pushed into the material box empty at the preset position on the discharging rail 5, as shown in fig. 6 and 7, the lead frame pushes the push baffle plate 31 to rotate outwards in the process of being pushed out from the cleaning basket 3 so as to avoid the lead frame, and the baffle plate 31 automatically resets after the lead frame is completely separated from the cleaning basket 3. In the process of feeding, cleaning or discharging, a plurality of lead frames can be simultaneously carried out, so that the cleaning efficiency is effectively improved; when the lead frames in one cleaning basket 3 are cleaned, one of the other pair of cleaning baskets 3 in the horizontal state is loaded into the lead frames to be cleaned, and the cleaned lead frames in the other cleaning basket 3 in the horizontal state are simultaneously pushed out, so that the waiting time among feeding, cleaning and discharging is reduced, and the cleaning efficiency is further improved.

The foregoing is illustrative of the preferred embodiments of the present 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 cleaning device, comprising:

a washing tank (1);

the rotary frame (2) is rotatably arranged on the cleaning pool (1), the rotating axis of the rotary frame is horizontally arranged, the rotary frame (2) is provided with four cleaning baskets (3) along the circumferential array, the length direction of each cleaning basket (3) is perpendicular to the rotating axis of the rotary frame (2), the two ends of each cleaning basket (3) along the length direction penetrate through the inner walls of the two sides of the rotary frame, a plurality of pairs of accommodating grooves (301) are formed in the inner walls of the two sides of each cleaning basket, the accommodating grooves (301) are parallel to the length direction of the cleaning baskets (3), and rotatable baffles (31) are arranged at the two ends of each accommodating groove (301);

the feeding track (4) and the discharging track (5) are respectively positioned on two sides of the rotating frame (2), are used for conveying material boxes provided with lead frames to be cleaned, and are parallel to the rotating axis of the rotating frame (2);

a first push plate (41) is arranged on the outer side of the feeding track (4) and is used for pushing lead frames in the same material box on the feeding track (4) into the cleaning basket (3) which is on the corresponding side and is in a horizontal state;

and a second push plate (51) is arranged among the four cleaning baskets (3) and is used for simultaneously pushing out the lead frames in the other cleaning basket (3) in a horizontal state and simultaneously pushing the lead frames into an empty material box on the discharging rail (5).

2. Lead frame cleaning device according to claim 1, characterized in that the first push plate (41) and the second push plate (51) are each arranged at the movable end of a telescopic cylinder.

3. Lead frame cleaning device according to claim 1, characterized in that the feeding track (4) and the discharging track (5) are both roller conveying structures and are driven by a motor.

4. Lead frame cleaning device according to claim 1, characterized in that the position of the infeed track (4) for the lead frames and the position of the outfeed track (5) for the lead frames are provided with detection switches (6).

5. The lead frame cleaning device as claimed in claim 1, wherein the first pushing plate (41) and the second pushing plate (51) are both vertically arranged flat plate structures, the width of the first pushing plate (41) and the width of the second pushing plate (51) are both smaller than the width of the lead frames, and the height of the first pushing plate (41) and the height of the second pushing plate (51) cover all the lead frames stacked in the magazine and are smaller than the inner space height of the magazine and the cleaning basket (3).

6. Lead frame cleaning device according to claim 1, characterized in that a connecting rod (32) is respectively arranged at the end of each of the four corners of the cleaning basket (3) corresponding to the receiving groove (301), the connecting rod (32) is perpendicular to the bottom surface of the cleaning basket (3), and the baffles (31) are rotatably arranged on the connecting rods (32).

7. The lead frame cleaning device as claimed in claim 6, wherein a gap is formed in the middle of one end of the baffle plate (31) connected with the connecting rod (32), a spring piece (33) with a U-shaped structure is arranged at the corresponding gap, two side plates of the spring piece (33) are positioned on two sides of the baffle plate (31), the connecting rod (32) is positioned between the two side plates of the spring piece (33), and a bottom plate of the spring piece (33) is attached to the inner side wall of the accommodating groove (301).