Lead frame box

Abstract

A lead frame box comprises a box body and a fixing unit. The box body comprises a plurality of middle concentric-square-shaped frames arranged at intervals along a straight line in an array mode, end concentric-square-shaped frames are arranged at the outer ends of the two middle concentric-square-shaped frames located at the two ends at intervals respectively, a plurality of ladder frames are arranged on the two inner side faces of each middle concentric-square-shaped frame and the two inner side faces of each end concentric-square-shaped frame in the vertical direction in an array mode respectively, and the ladder frames are used for storing lead frames with different widths. The fixing unit comprises a pair of end plates assembled in outer end openings of the end concentric-square-shaped frames respectively, a plurality of sliding openings are formed in the side face of one end plate in a penetrating mode, sliding rods with preset lengths are arranged in the sliding openings in a penetrating mode, a vertical plate is arranged at the other end of one end plate, a plurality of pressing plates are vertically arrayed on one side face of the vertical plate, and inverted step parts matched with the step frames are arranged at the two ends of the pressing plates respectively. Limiting blocks are assembled at one ends of the sliding rods. The lead frame box can be used for stably placing various lead frames with different shapes, and has relatively high universality.

Description

Technical Field

[0001] The utility model relates to the field of lead frame temporary storage tools, in particular to a lead frame box. Background Art

[0002] A lead frame is a chip carrier for integrated circuits. In semiconductor packaging, lead frames are required in multiple processes, and multiple lead frames need to be temporarily stored or transferred simultaneously for continuous production, including die bonding, curing, plastic encapsulation, etc. In order to place multiple lead frames at the same time, a placement box is needed to place the lead frames.

[0003] However, different lead frames have different lengths and widths. Therefore, placement boxes that are completely different need to be specially produced and processed for various shaped lead frames for placement. The versatility of the placement boxes is relatively low, which will make production and use inconvenient. Summary of the Utility Model

[0004] In view of the above defects, the utility model provides a lead frame box that can stably place various shaped lead frames and has strong versatility.

[0005] In order to achieve the purpose of the utility model, the following technology is proposed:

[0006] A lead frame box includes:

[0007] A box body, including a plurality of middle return frames arranged at intervals in a straight line array. Outer ends of two middle return frames at both ends are respectively provided with end return frames at intervals. Inner sides of each middle return frame and each end return frame are respectively arrayed with a plurality of stepped brackets in the vertical direction. The stepped brackets are used for storing lead frames with different widths;

[0008] A fixing unit, including a pair of end plates respectively assembled in outer end openings of the end return frames. A plurality of sliding openings are penetrated through a side surface of one end plate. A sliding rod with a predetermined length is penetrated through the sliding openings. A vertical plate is provided at the other end. A plurality of pressing plates are vertically arrayed on one side surface of the vertical plate. Inverted stepped portions matching the stepped brackets are respectively opened at both ends of the pressing plates. A limiting block is assembled at one end of the sliding rod.

[0009] Furthermore, between each adjacent middle return frame, and between the middle return frame and the end return frame are respectively fixedly connected by a plurality of cross plates.

[0010] Furthermore, the box body further includes an n-shaped handle, and lower ends of two vertical portions thereof are respectively fixed to upper ends of each end return frame.

[0011] Furthermore, each middle return frame and each end return frame are respectively provided with a plurality of vertical ventilation openings penetrating up and down, and a plurality of horizontal ventilation openings are penetrated through a side surface of the end plate.

[0012] Further, the two end faces of the stepped frame of the middle loop frame are respectively in the same vertical plane as the two end faces of the middle loop frame.

[0013] Further, one end face of the stepped frame of the end loop frame is in the same vertical plane as the inner end face of the end loop frame, and there is a predetermined distance between the other end face and the outer end face of the end loop frame, and the thickness of the end plate is equal to the predetermined distance.

[0014] Further, first jacks are respectively formed at the four corners of the outer end faces of the two end loop frames, convex blocks are respectively provided at the four corners of the outer end face of the end plate, and first inserting blocks matched with the first jacks are provided on the inner side surfaces of the convex blocks for fixedly connecting the end plate and the end loop frames.

[0015] Further, a pair of second jacks that do not penetrate the side surface of the end plate are respectively formed on both sides of each sliding opening of the end plate provided with the sliding opening, and a pair of second inserting blocks matched with the second jacks are further provided on the inner side surface of the limiting block. When the inner side surface of the limiting block is attached to the outer side surface of an end plate, the second inserting blocks are completely inserted into the second jacks.

[0016] Further, a threaded hole is formed at one end of the sliding rod, a through hole matched with the threaded hole is formed through the side surface of the limiting block, and the limiting block is fixed to one end of the sliding rod by screwing a screw rod into the through hole and the threaded hole.

[0017] The beneficial effects of this technical solution are as follows:

[0018] 1. Between the opposite vertical planes of the stepped frames arranged in the box body, it can be used for placing lead frames of various different widths. According to the length of the lead frame to be placed, sliding rods with different lengths can be adopted, so that the limiting block pushes the sliding rod and the pressing plate presses each lead frame tightly against the inner side surface of an end plate, so that lead frames with different lengths and widths can be stably placed in the lead frame box, and the versatility is good.

[0019] 2. Both ends of the lead frame box can be opened and closed by end plates, so that it can be conveniently operated according to needs in the process of opening one end or both ends of the lead frame box.

[0020] 3. There are intervals between the middle loop frames of the box body, and between the middle loop frame and the end loop frame, and the lead frame box is provided with a plurality of vertical ventilation openings and a plurality of horizontal ventilation openings, so that during some processes, such as hot air curing of chips, good ventilation can be achieved. Description of the Drawings

[0021] Figure 1 The overall three-dimensional view of the embodiment of the present application is shown.

[0022] Figure 2 The three-dimensional view of the box body of the embodiment of the present application is shown.

[0023] Figure 3 Shows an enlarged view of part A of an embodiment of the present application Figure 2 .

[0024] Figure 4 Shows an exploded view of the fixing unit of an embodiment of the present application

[0025] Figure 5 Shows an enlarged view of part B of an embodiment of the present application Figure 4 . Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific implementation manners. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application

[0027] As Figures 1 to 5 shown, a lead frame box includes a box body 1 and a fixing unit 2

[0028] The box body 1 includes a plurality of middle loop frames 11 arranged at intervals in a straight line array. Outer ends of two middle loop frames 11 at both ends are respectively provided with end loop frames 12 at intervals. Between adjacent middle loop frames 11, and between the middle loop frames 11 and the end loop frames 12 are respectively fixedly connected by a plurality of cross plates. The box body 1 further includes an n-shaped grip, the lower ends of the two vertical portions of which are respectively fixed to the upper ends of the respective end loop frames 12. Each middle loop frame 11 and each end loop frame 12 are respectively provided with a plurality of vertically penetrating vertical ventilation openings 14. A plurality of stepped brackets 15 are respectively arranged in an array along the vertical direction on the two inner side surfaces of each middle loop frame 11 and each end loop frame 12. The stepped brackets 15 are used for storing lead frames with different widths. Both end faces of the stepped brackets 15 of the middle loop frame 11 are located in the same vertical plane as the two end faces of the middle loop frame 11. One end face of the stepped bracket 15 of the end loop frame 12 is located in the same vertical plane as the inner end face of the end loop frame 12, and there is a predetermined distance between the other end face and the outer end face of the end loop frame 12. First jacks 16 are respectively opened at the four corners of the outer end faces of the two end loop frames 12

[0029] The fixing unit 2 includes a pair of end plates 21 respectively assembled in the outer end openings of the end return frames 12. Specifically, the thickness of the end plate 21 is equal to the distance between the other end face of the stepped bracket 15 and the outer end face of the end return frame 12. The four corners of the outer end face of the end plate 21 are respectively provided with bumps 22, and the inner side of the bump 22 is provided with a first plug 221 matching the first jack 16 for fixedly connecting the end plate 21 and the end return frame 12. A plurality of horizontal ventilation openings 23 are formed through the side surface of the end plate 21, and a plurality of sliding openings 24 are also formed through the side surface of one end plate 21. A pair of second jacks 241 that do not penetrate the side surface of the end plate 21 are respectively formed on both sides of each sliding opening 24 of the end plate 21 provided with the sliding openings 24. A sliding rod 25 with a predetermined length is inserted into the sliding opening 24, and a vertical plate 252 is provided at the other end. Specifically, the total number of the vertical plates 252 is one, and they are connected to each sliding rod 25 at the same time. A plurality of pressing plates 26 are vertically arranged on one side surface of the vertical plate 252. The two ends of the pressing plate 26 are respectively provided with inverted stepped portions 261 matching the stepped bracket 15. A limiting block 27 is assembled at one end of the sliding rod 25. Specifically, a threaded hole 251 is formed at one end of the sliding rod 25, and a through hole 271 matching the threaded hole 251 is formed through the side surface of the limiting block 27. The limiting block 27 is fixed to one end of the sliding rod 25 by screwing a screw 28 through the through hole 271 and the threaded hole 251. A pair of second plugs 272 matching the second jacks 241 are also provided on the inner side surface of the limiting block 27. When the inner side surface of the limiting block 27 is attached to the outer side surface of one end plate 21, the second plugs 272 are completely inserted into the second jacks 241, and the pressing plates 26 just push one end of each lead frame to contact the inner side surface of the other end plate 21, so as to fix each lead frame in the box body 1.

[0030] The above are only some embodiments listed in this application and are not used to limit this application.

Claims

1. A lead frame box, characterized in that, Comprising: A box body (1), including a plurality of middle loop frames (11) arranged at intervals in a straight line array. At the outer ends of the two middle loop frames (11) located at both ends, end loop frames (12) are respectively arranged at intervals. On the two inner side surfaces of each middle loop frame (11) and each end loop frame (12), a plurality of stepped brackets (15) are arrayed in the vertical direction. The stepped brackets (15) are used for storing lead frames with different widths; A fixing unit (2), including a pair of end plates (21) respectively assembled in the outer end openings of the end loop frames (12). A plurality of sliding openings (24) are also penetrated through the side surface of one end plate (21). A sliding rod (25) with a predetermined length is penetrated through the sliding openings (24). A vertical plate (252) is provided at the other end. A plurality of pressing plates (26) are vertically arrayed on one side surface of the vertical plate (252). Inverted stepped portions (261) matching the stepped brackets (15) are respectively opened at both ends of the pressing plates (26). A limiting block (27) is assembled at one end of the sliding rod (25).

2. The lead frame box according to claim 1, characterized in that, Between each adjacent middle loop frame (11), and between the middle loop frame (11) and the end loop frame (12), they are respectively fixedly connected by a plurality of cross plates.

3. The lead frame box according to claim 1, wherein The box body (1) further includes an n-shaped grip, and the lower ends of its two vertical portions are respectively fixed to the upper ends of each end loop frame (12).

4. The lead frame box according to claim 1, wherein A plurality of vertically penetrating vertical ventilation openings (14) are respectively opened in each middle loop frame (11) and each end loop frame (12). A plurality of horizontal ventilation openings (23) are penetrated through the side surface of the end plate (21).

5. The lead frame box according to claim 1, characterized in that, The two end surfaces of the stepped bracket (15) of the middle loop frame (11) are respectively in the same vertical plane as the two end surfaces of the middle loop frame (11).

6. The lead frame box according to claim 1, characterized in that, One end surface of the stepped bracket (15) of the end loop frame (12) is in the same vertical plane as the inner end surface of the end loop frame (12), and there is a predetermined distance between the other end surface and the outer end surface of the end loop frame (12). The thickness of the end plate (21) is equal to the predetermined distance.

7. The lead frame box according to claim 1, wherein First jacks (16) are respectively opened at the four corners of the outer end surfaces of the two end loop frames (12). Protrusions (22) are respectively provided at the four corners of the outer end surface of the end plate (21). First inserts (221) matching the first jacks (16) are provided on the inner side surface of the protrusions (22) for fixedly connecting the end plate (21) and the end loop frame (12).

8. The lead frame box according to claim 1, wherein On both sides of each sliding opening (24) of the end plate (21) provided with the sliding opening (24), a pair of second jacks (241) that do not penetrate the side surface of the end plate (21) are respectively opened. A pair of second inserts (272) matching the second jacks (241) are also provided on the inner side surface of the limiting block (27). When the inner side surface of the limiting block (27) is attached to the outer side surface of an end plate (21), the second inserts (272) are completely inserted into the second jacks (241).

9. The lead frame box according to claim 1, wherein A screw hole (251) is opened at one end of the sliding rod (25). A through hole (271) matching the screw hole (251) is penetrated through the side surface of the limiting block (27). The limiting block (27) is fixed to one end of the sliding rod (25) by screwing a screw (28) through the through hole (271) and the screw hole (251).

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