CN218826991U

CN218826991U - Rib cutting structure for semiconductor chip production

Info

Publication number: CN218826991U
Application number: CN202222821284.3U
Authority: CN
Inventors: 施振潮
Original assignee: Guangdong Kehui Semiconductor Co ltd
Current assignee: Guangdong Kehui Semiconductor Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-04-07
Anticipated expiration: 2032-10-25

Abstract

The utility model discloses a muscle structure of cutting of semiconductor chip production relates to semiconductor chip production technical field. The utility model discloses a board, eager muscle power unit, chip fixed part, the spacing part of pin and sword power unit are placed to the chip, and the chip is placed the board upside and is equipped with eager muscle power unit, and eager muscle power unit bottom center is connected with chip fixed part, and chip fixed part week side vertical position is connected with spacing part of pin and sword power unit respectively. The utility model discloses a dispose chip fixed part, be equipped with the spacing part of pin, and there is the muscle cutting blade at spacing push rod surface sliding connection, can effective compaction chip, and carry out muscle cutting work when bending pin and compaction are spacing, the muscle cutting structure of having solved current semiconductor chip production is usually for the pin bending and go on with the muscle cutting substep, efficiency is lower, and when carrying out the muscle cutting to the pin, the pin can be the incurve or upwarp and the condition that the chip popped out, influence the problem of qualification rate and subsequent handling.

Description

Rib cutting structure for semiconductor chip production

Technical Field

The utility model belongs to the technical field of semiconductor chip produces, especially relate to a bar cutting structure of semiconductor chip production.

Background

After the packaging process of the semiconductor chip is finished, a series of operations are still needed, such as post-curing, rib cutting, forming, electroplating and other processes, wherein the rib cutting process is to cut off pins outside the semiconductor, and the alignment cutting of the pins is realized by a rib cutting structure produced by the multipurpose semiconductor chip. However, the following disadvantages still exist in the practical use:

1. when the existing rib cutting structure for semiconductor chip production is used for rib cutting of chips, rib cutting is usually performed after bending pins, the efficiency is low, the bent pins can leave spaces at the bottoms, and the condition that the pins are bent inwards can occur during rib cutting, so that the yield of production is influenced;

2. the bar cutting structure of current semiconductor chip production is carrying out the bar cutting during operation, and when traditional fixed mode was difficult to deal with the cutter and is retrieved, frictional force was to the influence of pin, and the pin can stick up under the frictional effect of blade to influence later stage installation chip, probably arouse the contact failure of pin, influence the chip performance, perhaps lead to the chip to pop out fixed mouthful, drop on one side, influence later stage process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bar cutting structure of semiconductor chip production, through disposing chip fixed part, be equipped with the spacing part of pin, and there is the bar cutting blade at the surface sliding connection of spacing push rod, can effective compaction chip, and carry out bar cutting work when bending pin and compaction are spacing, the bar cutting structure of having solved current semiconductor chip production is usually for the pin bending and go on with the bar cutting substep, efficiency is lower, and when carrying out the bar cutting to the pin, the pin can be incurved or upwarp and the condition that the chip popped out, influence the problem of qualification rate and subsequent handling.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a cut muscle structure of semiconductor chip production, place board, cut muscle power unit, chip fixed part, the spacing part of pin and sword power unit including the chip, the chip is placed the board upside and is equipped with cut muscle power unit, and cut muscle power unit bottom center is connected with the chip fixed part, and one side position of chip fixed part week side is equipped with the spacing part of pin, and chip fixed part week side is equipped with sword power unit in one side of the spacing part of perpendicular to pin.

The utility model discloses following beneficial effect has:

1. the utility model provides a bar cutting structure of semiconductor chip production is equipped with the spacing part of pin to the lateral surface that corresponds spacing part is connected with the bar cutting blade, can carry out crooked and compaction spacing to the pin at spacing part, carries out bar cutting work again, and efficiency obtains improving, and can avoid the pin inflexion, and simple structure is practical again.

2. The utility model provides a bar cutting structure of semiconductor chip production disposes fixed top of chip spare and the spacing part of pin, can be around the bar cutting compaction chip with crooked pin, avoided the influence of frictional force to the pin, effectively avoid the condition that the pin upwarps and the chip pops out.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of a rib cutting structure for semiconductor chip production;

FIG. 2 is an expanded view of the structure of the connection point of the packaged chip;

FIG. 3 is a schematic structural view of the bottom of the bar cutting power mechanism;

FIG. 4 is an expanded view of the structure of the lower side of the bottom of the tendon cutting power mechanism;

fig. 5 is an expanded view of the structure of the bottom of the chip holding top.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a chip placement board; 101. a chip limiting groove; 102. a knife edge gasket; 103. packaging the chip; 1031. an external pin; 2. a rib cutting power mechanism; 3. a chip fixing member; 301. an axis lifting rod; 302. a chip fixing top piece; 303. a push rod limit sliding chute; 304. the gasket is clamped in the groove; 305. a rubber pad clamping piece; 3051. softening the rubber pad; 4. a pin limiting component; 401. the push rod lifts the connecting rod; 402. a push rod slide rod; 403. a push rod connector; 404. a limit push rod; 4041. a push rod connector; 4042. the push rod fixes the bolt; 4043. a cutter limiting chute; 4044. the push rod slides the limit piece; 5. a knife power component; 501. a knife lifting connecting rod; 502. a cutter slide bar; 503. a cutter attachment area; 504. a tendon cutting blade; 5041. a cutter connecting piece; 5042. a cutter fixing screw; 5043. the cutter slides the locating part.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Please refer to fig. 1, fig. 2 and fig. 5, the utility model relates to a bar cutting structure for semiconductor chip production, place board 1 including the chip, bar cutting power unit 2, chip fixed part 3, pin spacing part 4 and sword power part 5, board 1 upside is equipped with bar cutting power unit 2 is placed to the chip, bar cutting power unit 2 bottom center is connected with chip fixed part 3, one side position of 3 week sides of chip fixed part is equipped with

pin spacing part

4, 3 week sides of chip fixed part are equipped with sword power part 5 in one side of perpendicular to pin spacing part 4, board 1 top central point is placed to the chip and is put and be equipped with chip spacing groove 101, the peripheral joint of chip spacing groove 101 has edge of a knife gasket 102, the inboard joint of chip spacing groove 101 has packaged chip 103, four sides of packaged chip 103 are connected with external pin 1031.

Before the bar cutting structure of the semiconductor chip production is prepared to cut bars of the packaged chip 103, the packaged chip 103 is taken out at first, the chip limiting groove 101 in the board 1 is placed on the alignment chip, the packaged chip 103 is clamped into the chip limiting groove, the external pin 1031 is limited on the upper side of the chip limiting groove 101, and after the bar cutting operation is completed, the bar cutting power mechanism 2 can be started to prepare to start bar cutting.

As shown in fig. 3 and 4, the bottom of the chip fixing component 3 is slidably connected with an axis lifting rod 301, the bottom end of the axis lifting rod 301 is fixed with a chip fixing top piece 302, four sides of the chip fixing top piece 302 are provided with push rod limiting sliding grooves 303, the center of the bottom of the chip fixing top piece 302 is provided with a gasket clamping groove 304, a rubber gasket clamping piece 305 is clamped in the gasket clamping groove 304, the bottom of the rubber gasket clamping piece 305 is connected with a soft rubber gasket 3051, the size of the soft rubber gasket 3051 is consistent with that of the packaged chip 103, a push rod lifting connecting rod 401 is slidably connected between the pin limiting components 4, the welding has push rod slide bar 402 between push rod lift connecting rod 401, four sides evenly distributed of push rod slide bar 402 bottom has push rod connector 403, push rod connector 403 lateral surface bolt fastening has spacing push rod 404, spacing push rod 404 top is equipped with push rod connecting piece 4041, push rod connecting piece 4041 corresponds push rod connector 403 connecting hole position and is connected with push rod fixing bolt 4042, spacing push rod 404 lateral surface has seted up the spacing spout 4043 of cutter, spacing push rod 404 medial surface is equipped with push rod slip locating part 4044, and slide in the spacing spout 303 of push rod through push rod slip locating part 4044.

After the rib cutting power mechanism 2 is started, firstly, the axis lifting rod 301 of the chip fixing part 3 begins to descend, the soft rubber pad 3051 on the lower side of the bottom rubber pad clamping part 305 pushes the upper surface of the packaged chip 103, then the pin limiting part 4 enables the push rod lifting connecting rod 401 to drive the push rod sliding rod 402 to move downwards, the bottom of the limiting push rod 404 gradually contacts the top of the external pin 1031, then the limiting push rod 404 slides along the push rod limiting sliding groove 303, the external pin 1031 is gradually bent by the position outside the chip limiting groove 101 and is flattened, and limitation is finally completed.

Wherein as shown in fig. 3 and 4, sliding connection has a sword lift connecting rod 501 between the sword power part 5, the welding has the cutter slide bar 502 between the sword lift connecting rod 501, four sides evenly distributed of cutter slide bar 502 bottom have cutter linking region 503, the outside of cutter linking region 503 is connected with muscle cutting blade 504 with the screw, muscle cutting blade 504 top is equipped with cutter connecting piece 5041, cutter connecting piece 5041 corresponds cutter linking region 503 position and is connected with cutter set screw 5042, muscle cutting blade 504 medial surface is equipped with cutter slip locating part 5043, and slide in cutter spacing spout 4043 through cutter slip locating part 5043.

After the external pin 1031 is bent and limited, the outermost ring of the knife lifting connecting rod 501 starts to move downwards, so that the tendon cutting blade 504 gradually contacts the external pin 1031, then the tendon cutting blade 504 continues to slide along the cutter limiting sliding groove 4043 to complete cutting of the external pin 1031, and then all the components reversely move upwards to complete tendon cutting.

The utility model discloses specific application does: before a bar cutting structure produced by a semiconductor chip is adopted to prepare bar cutting work on a packaged chip 103, the packaged chip 103 is taken out firstly, the chip limiting groove 101 on the chip placing plate 1 is aligned, the packaged chip 103 is clamped into the chip, an external pin 1031 is limited at the upper side of the chip limiting groove 101, and after the bar cutting work is finished, a bar cutting power mechanism 2 can be started to prepare for bar cutting; after the rib cutting power mechanism 2 is started, firstly, the axis lifting rod 301 of the chip fixing part 3 begins to descend, the soft rubber pad 3051 on the lower side of the bottom rubber pad clamping piece 305 is pushed to the upper surface of the packaged chip 103, then the pin limiting part 4 enables the push rod lifting connecting rod 401 to drive the push rod sliding rod 402 to move downwards, the bottom of the limiting push rod 404 is gradually contacted with the top of the external pin 1031, then the limiting push rod 404 slides along the push rod limiting sliding groove 303, so that the external pin 1031 is gradually bent and flattened at the position close to the outer side of the chip limiting groove 101, and finally limiting is completed; after the external pin 1031 is bent and limited, the outermost ring of the knife lifting connecting rod 501 starts to move downwards, so that the tendon cutting blade 504 gradually contacts the external pin 1031, then the tendon cutting blade 504 continues to slide along the cutter limiting sliding groove 4043 to complete cutting of the external pin 1031, and then all the components reversely move upwards to complete tendon cutting.

The above is only the preferred embodiment of the present invention, and the present invention is not limited thereto, any technical solutions recorded in the foregoing embodiments are modified, and some technical features thereof are replaced with equivalent ones, and any modification, equivalent replacement, and improvement made thereby all belong to the protection scope of the present invention.

Claims

1. The utility model provides a bar cutting structure of semiconductor chip production, places board (1), bar cutting power unit (2), chip fixed part (3), pin spacing part (4) and sword power unit (5) including the chip, its characterized in that: the chip is placed board (1) upside and is equipped with muscle cutting power unit (2), muscle cutting power unit (2) bottom center is connected with chip fixed part (3), one side position of chip fixed part (3) week side is equipped with pin spacing part (4), chip fixed part (3) week side is in the perpendicular to one side of pin spacing part (4) is equipped with sword power unit (5).

2. The rib cutting structure for semiconductor chip production according to claim 1, wherein: the chip placing plate is characterized in that a chip limiting groove (101) is formed in the center of the top of the chip placing plate (1), a knife edge gasket (102) is connected to the periphery of the chip limiting groove (101) in a clamping mode, a packaging chip (103) is connected to the inner side of the chip limiting groove (101) in a clamping mode, and external pins (1031) are connected to the four sides of the packaging chip (103).

3. The rib cutting structure for semiconductor chip production according to claim 1, wherein: the bottom of the chip fixing component (3) is connected with an axis lifting rod (301) in a sliding mode, a chip fixing top piece (302) is fixed at the bottom end of the axis lifting rod (301), and push rod limiting sliding grooves (303) are formed in four sides of the chip fixing top piece (302).

4. The rib cutting structure for semiconductor chip production according to claim 3, wherein: gasket joint groove (304) have been seted up at fixed top member of chip (302) bottom center, the joint has cushion joint spare (305) in gasket joint groove (304), cushion joint spare (305) bottom is connected with soft system cushion (3051), the size of soft system cushion (3051) accords with encapsulation chip (103).

5. The rib cutting structure for semiconductor chip production according to claim 1, wherein: the pin limiting parts (4) are connected with push rod lifting connecting rods (401) in a sliding mode, push rod sliding rods (402) are welded between the push rod lifting connecting rods (401), push rod connecting ports (403) are uniformly distributed on four sides of the bottom of each push rod sliding rod (402), and limiting push rods (404) are fixed on the outer side faces of the push rod connecting ports (403) through bolts.

6. The rib cutting structure for semiconductor chip production according to claim 5, wherein: spacing push rod (404) top is equipped with push rod connecting piece (4041), push rod connecting piece (4041) correspond push rod connector (403) connecting hole position is connected with push rod fixing bolt (4042), spacing spout of cutter (4043) has been seted up to spacing push rod (404) lateral surface, spacing push rod (404) medial surface is equipped with push rod slip locating part (4044), and passes through push rod slip locating part (4044) slides in push rod spacing spout (303).

7. The rib cutting structure for semiconductor chip production according to claim 1, wherein: the cutter lifting mechanism is characterized in that cutter lifting connecting rods (501) are connected between the cutter power components (5) in a sliding mode, cutter sliding rods (502) are welded between the cutter lifting connecting rods (501), cutter connecting areas (503) are uniformly distributed on four sides of the bottom of each cutter sliding rod (502), and rib cutting blades (504) are connected to the outer sides of the cutter connecting areas (503) through screws.

8. The rib cutting structure for semiconductor chip production according to claim 7, wherein a cutter connector (5041) is disposed on the top of the rib cutting blade (504), a cutter fixing screw (5042) is connected to the cutter connector (5041) corresponding to the position of the cutter connector (503), and a cutter sliding stopper (5043) is disposed on the inner side of the rib cutting blade (504) and slides in the cutter limiting sliding groove (4043) through the cutter sliding stopper (5043).