CN210640193U

CN210640193U - Die head device is pressed to many die sizes

Info

Publication number: CN210640193U
Application number: CN201922208361.6U
Authority: CN
Inventors: 朱胜任
Original assignee: Shenzhen Guanghengda Hardware Plastic Products Co Ltd
Current assignee: Shenzhen Guanghengda Hardware Plastic Products Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-05-29
Anticipated expiration: 2029-12-10

Abstract

The utility model belongs to the technical field of semiconductor packaging, and discloses a multi-die-size die head device, which comprises a fixed plate, wherein a pressure head is fixed at the middle position of one side of the fixed plate, a groove is arranged at the side of the pressure head far away from the fixed plate, a lug is fixed inside the groove in a rectangular array, an air exhaust groove is arranged on the outer wall of the lug, a diversion trench is formed between two adjacent lugs at interval, and the end part of the lug is integrally formed with an arc surface. The packaging effect and reliability are enhanced.

Description

Die head device is pressed to many die sizes

Technical Field

The utility model belongs to the technical field of the semiconductor package, concretely relates to many die sizes die head device.

Background

The existing semiconductor packaging uses a bonding sheet die head to flatten the melted solder wire so as to flatten the chip and prevent the chip from forming solder missing or a cavity at the bottom of the chip, wherein the die head is used for adjusting the flatness, thickness and width of the tin between the chip and the frame.

In chinese patent with patent No. CN201820121169.6, a die head device with multiple die sizes is disclosed, it is described in this patent that "a die head can be used on die frames with different frame sizes, satisfy the use of the die heads of a series of sizes", but this patent medium-pressure die head is poor in exhaust effect when using, appear cavity behind the sticky sheet easily, in addition, pressure head and installation end formula structure as an organic whole in the comparison document, when the pressure head damages and can't use, can only wholly abandon, can't carry out local replacement, cause the waste of resource.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a many die sizes die head device to the tradition die head that proposes in solving above-mentioned background art is poor at the exhaust effect when using, appears hollow problem behind the adhesion sheet easily, and in addition, traditional pressure head and installation end formula structure as an organic whole can't carry out the problem of local change.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a many moulding-dies size moulding-die head device, includes the fixed plate, one side intermediate position department of fixed plate is fixed with the pressure head, one side that the fixed plate was kept away from to the pressure head is seted up flutedly, the inside of recess is the rectangle array and is fixed with the lug, the air discharge duct has been seted up to the exterior wall of lug, and the interval forms the guiding gutter between two adjacent lugs, the tip integrated into one piece of lug has the arc surface.

Preferably, the middle position of one side of the fixed plate, which is far away from the pressure head, is connected with a screw rod, the outer mounting of the screw rod is provided with a connecting column, the circumferential direction of the connecting column is provided with a second screw hole matched with the screw rod, the outer surface walls of the connecting column and the screw rod are symmetrically provided with first screw holes, and the inner part of each first screw hole is screwed and connected with a fastening bolt matched with the first screw hole.

Preferably, a mounting seat is fixed on one side of the connecting column, which is far away from the fixing plate, and a mounting groove is formed in the outer wall of the mounting seat.

Preferably, both ends of one side of the fixing plate far away from the pressure head are symmetrically connected with first fixing blocks, the outer surface wall of each first fixing block is connected with a pressure spring, and one end of each pressure spring far away from the corresponding first fixing block is connected with a second fixing block.

Preferably, the number of the lugs is four, and the four lugs form a circular cavity through arc surfaces.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a to be located the air discharge duct of recess inner wall originally and change to the intermediate position department that is located the lug, can reduce blocking of recess inner wall, improve the exhaust effect, avoided exhausting not smooth and the hollow phenomenon of bubble that produces, in addition, through changing into the arc surface with this planar lug tip, can effectively improve the mobility of melting soldering tin for the soldering tin that comes out is more even, has strengthened encapsulation effect and reliability.

(2) The utility model discloses a screw rod, spliced pole, second screw and fastening bolt's cooperation damages at the pressure head and can't carry out the use time, and the staff can twist off the fastening bolt in the first screw earlier, then utilizes the screw rod to be connected with screwing in of second screw and twists off the pressure head, then more change new pressure head can, will wholly abandon originally and change into the part and abandon, reduced the waste of resource, the input of cost is reduced has improved the income.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view of the connecting column of the present invention;

FIG. 3 is a side view of the indenter of the present invention;

in the figure: 1-fixing plate, 2-fastening bolt, 3-mounting seat, 4-mounting groove, 5-connecting column, 6-screw, 7-first fixing block, 8-pressure spring, 9-pressure head, 10-second fixing block, 11-first screw hole, 12-second screw hole, 13-lug, 14-diversion groove, 15-air discharge groove, 16-groove and 17-arc surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-3, the utility model provides a many die sizes die head device, including fixed plate 1, one side intermediate position department of fixed plate 1 is fixed with pressure head 9, one side that fixed plate 1 was kept away from to pressure head 9 is seted up flutedly 16, the inside of recess 16 is the rectangle array and is fixed with lug 13, exhaust duct 15 has been seted up to lug 13's exterior wall, be located the exhaust duct 15 of lug 9 intermediate position department, can reduce blockking of recess 16 inner wall, improve the exhaust effect, the unsmooth and the hollow phenomenon of bubble of production has been avoided exhausting, and the interval forms guiding gutter 14 between two adjacent lugs 13, lug 13's tip integrated into one piece has arc surface 17.

In order to realize local change, reduce the waste of resource, reduce cost's input and improvement income, in this embodiment, it is preferred, one side intermediate position department that pressure head 9 was kept away from to fixed plate 1 is connected with screw rod 6, the externally mounted of screw rod 6 has spliced pole 5, spliced pole 5's week axial seted up with screw rod 6 assorted second screw 12, first screw 11 has been seted up to the equal symmetry of the outer table wall of spliced pole 5 and screw rod 6, the inside of first screw 11 closes soon to be connected with rather than the fastening bolt 2 of looks adaptation.

In order to stably and firmly mount the device on the equipment, in the embodiment, preferably, a mounting seat 3 is fixed on one side of the connecting column 5 away from the fixing plate 1, and a mounting groove 4 is formed in an outer wall of the mounting seat 3.

In order to improve the cushioning effect, reduce the damage of pressure die head, prolong the device's life, in this embodiment, preferably, fixed plate 1 keeps away from one side both ends symmetry of pressure head 9 and is connected with first fixed block 7, and the outward appearance wall of first fixed block 7 is connected with pressure spring 8, and the one end that first fixed block 7 was kept away from to pressure spring 8 is connected with second fixed block 10.

In order to improve the fluidity of the molten solder and improve the sealing effect, in the present embodiment, it is preferable that four bumps 13 are fixed, and the four bumps 13 form a circular cavity by the arc surface 17.

The utility model discloses a theory of operation and use flow: when the utility model is used, firstly, the installation seat 3 provided with the installation groove 4 is utilized to stably install the device, then the semiconductor packaging operation can be carried out, when tin is pressed, the diversion trench 14 is used for leading the diversion of the soldering tin liquid to be uniform, the exhaust trench 15 positioned at the middle position of the lug 9 can reduce the blocking of the inner wall of the groove 16, the exhaust effect is improved, the phenomenon of bubble cavity caused by unsmooth exhaust is avoided, in addition, when the pressure head 9 is damaged and can not be used, a worker can firstly unscrew the fastening bolt 2 in the first screw hole 11, then the pressure head 9 is unscrewed by utilizing the screwing connection of the screw rod 6 and the second screw hole 12, then a new pressure head 9 is replaced, the whole original pressure head is abandoned to be partially abandoned, the waste of resources is reduced, the cost investment is reduced, the income is improved, in addition, the buffer effect can be improved through the pressure spring 8 connected between the first fixing block 7 and the second fixing block 10, the damage of the pressure die head is reduced, and the service life of the device is prolonged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a many die sizes die head device which characterized in that: the improved gas exhaust device is characterized by comprising a fixing plate, a pressure head is fixed at the middle position of one side of the fixing plate, a groove is formed in one side, away from the fixing plate, of the pressure head, a convex block is fixed in the groove in a rectangular array mode, an exhaust groove is formed in the outer wall of the convex block, a diversion groove is formed between every two adjacent convex blocks at intervals, and an arc surface is formed at the end portion of the convex block in an integrated mode.

2. A multiple die size die head assembly according to claim 1, wherein: the fixed plate is connected with the screw rod in the middle position of one side of keeping away from the pressure head, the externally mounted of screw rod has the spliced pole, the week axial of spliced pole seted up with screw rod assorted second screw, first screw has been seted up to the equal symmetry in outward appearance wall of spliced pole and screw rod, the inside of first screw closes soon to be connected with rather than the fastening bolt of looks adaptation.

3. A multiple die size die head assembly according to claim 2, wherein: the side of the connecting column far away from the fixing plate is fixed with a mounting seat, and the outer wall of the mounting seat is provided with a mounting groove.

4. A multiple die size die head assembly according to claim 1, wherein: the pressure head is kept away from to the fixed plate, and one side both ends symmetric connection that the pressure head was kept away from to the fixed plate has first fixed block, the outward appearance wall of first fixed block is connected with the pressure spring, the one end that first fixed block was kept away from to the pressure spring is connected with the second fixed block.

5. A multiple die size die head assembly according to claim 1, wherein: the four lugs are fixed together, and form a circular cavity through an arc surface.