Storage rack for lead frames

Abstract

The utility model relates to the technical field of semiconductor chip processing equipment, in particular to a lead frame storage rack which comprises a rack body and an elastic pressing mechanism, the rack body is provided with a containing cavity for limiting the lead frames to be stacked in order, and the elastic pressing mechanism is installed in the containing cavity and used for pressing the tops of the lead frames stacked on the elastic pressing mechanism. The lead frame has the effect of improving the structural integrity of the lead frame during storage and transportation.

Description

Technical Field

[0001] The present application relates to the technical field of semiconductor chip processing equipment, and in particular to a storage rack for a lead frame. Background Art

[0002] Lead frame is the chip carrier of integrated circuit. It is a key structural component that uses bonding materials to realize the electrical connection between the internal circuit lead end of the chip and the external lead to form an electrical circuit. Lead frame usually acts as a bridge to connect with external wires. Lead frame is required in most semiconductor integrated blocks and is an important basic material in the electronic information industry.

[0003] Existing lead frames are stacked after mass production. When the lead frames need to participate in subsequent processing, the operators usually pick up the stacked lead frames and transfer them to the next processing station. In order not to affect the subsequent processing and production links, the lead frames need to avoid collisions with each other during stacking, storage and transfer to ensure the structural integrity of the lead frames. Utility Model Content

[0004] In order to improve the structural integrity of the lead frame during storage and transportation, the present application provides a storage rack for the lead frame.

[0005] The present application provides a lead frame storage rack that adopts the following technical solution:

[0006] A lead frame storage rack comprises a rack body and a spring pressing mechanism, wherein the rack body has a placement cavity for limiting the orderly stacking of lead frames, and the spring pressing mechanism is installed in the placement cavity and is used to press the top of the lead frame stacked thereon.

[0007] By adopting the above technical solution, the frame has a placement cavity, and the lead frames can be stacked in the placement cavity of the frame after mass production, and the side of the lead frame abuts against the inner wall of the frame, and the lead frame is protected by the frame. The spring pressing mechanism abuts against the lead frame and the inner wall of the frame, which reduces the risk of the lead frame tipping over and falling during stacking, storage and transportation, deformation caused by mutual squeezing, and mutual scratching, thereby improving the structural integrity of the lead frame during storage and transportation.

[0008] Optionally, the frame includes a base, side panels, a back panel and a limit plate, the number of the side panels is two, the two side panels are symmetrically connected to opposite sides of the base, the back panel is connected to one side of the base and connected to the two side panels, the limit plate corresponds to the side panels one by one and is connected to the side of the side panel away from the back panel, and the placement cavity is surrounded by the base, side panels, back panel and limit plates.

[0009] By adopting the above technical solution, the base, the side plate and the back plate together form a placement cavity for the lead frame. The setting of the limit plate can limit the lead frame, and the coordination of the limit plate and the side plate is equivalent to setting a fence for the stacked lead frames, preventing the lead frame from falling from the opposite side of the back plate, thereby improving the structural integrity of the lead frame during storage and transportation.

[0010] Optionally, the spring pressing mechanism includes a pressing plate for pressing the lead frame and spring sheets symmetrically arranged on opposite sides of the pressing plate, and one side of the spring sheet extends toward the outside of the placement cavity.

[0011] By adopting the above technical solution, the pressing plate can press against the upper surface of the lead frame to compress the lead frame and prevent the stacked lead frames from shaking with each other during transportation. The spring pieces are symmetrically arranged on both sides of the pressing plate, and the spring pieces are pressed against the two opposite inner walls of the frame side plate to fix the pressing plate, prevent relative sliding between the pressing plate and the frame, and improve the structural integrity of the lead frame during storage and transportation.

[0012] Optionally, the spring pressing mechanism further includes a connecting plate and a control plate, each of the spring plates is sequentially connected to a connecting plate and a control plate, and the two control plates are mirror-symmetrically arranged and spaced to form a control gap for controlling the deformation of the spring plates.

[0013] By adopting the above technical solution, the setting of the control sheet can be used to control the elastic deformation of the spring sheet, and the connecting sheet is used to fix the spring sheet and the control sheet.

[0014] Optionally, a pad is provided on the plate surface of the pressing plate facing the inner side of the placement cavity, and the pressing plate is indirectly in contact with the lead frame through the pad.

[0015] By adopting the above technical solution and setting the pad, the surface of the lead frame can be protected to prevent the pressure plate from scratching the lead frame, which is beneficial to improving the structural integrity of the lead frame during storage and transportation.

[0016] Optionally, a guide groove is provided on the back plate, and the guide groove is located on a side of the back plate away from the base.

[0017] By adopting the above technical solution, the opening of the guide groove can provide a certain operating space for the operator when the lead frame is placed into the placement cavity of the frame, which is convenient for adjusting the placement angle and position of the lead frame, and is beneficial to improving the structural integrity of the lead frame during storage and transportation.

[0018] Optionally, a plurality of through holes are formed on the back plate, and the through holes are evenly arranged on the back plate and are interconnected with the placement cavity.

[0019] By adopting the above technical solution, the opening of the through hole can reduce the weight of the back plate, thereby reducing the overall weight of the frame, which is beneficial to improving the structural integrity of the lead frame during storage and transportation.

[0020] Optionally, a pad is fixedly connected to the base, and the pad is located in the placement cavity and abuts against the lead frame.

[0021] By adopting the above technical solution, the pad is arranged between the base and the lead frame. On the one hand, it protects the lower surface of the lead frame to prevent mutual friction between the bottom of the base and the lead frame. On the other hand, it can also play a shock-absorbing role, which is beneficial to improve the structural integrity of the lead frame during storage and transportation.

[0022] Optionally, a foot is provided on a side of the base away from the pad.

[0023] By adopting the above technical solution, the feet provide a shock-absorbing effect for the frame, which is beneficial to improving the structural integrity of the lead frame storage.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The frame is used to stack the lead frames. The spring pressing mechanism presses against the upper surface of the lead frame on one hand, and contacts with the inner wall of the frame on the other hand to press the lead frame tightly to prevent the stacked lead frames from shaking during transportation;

[0026] 2. The matching arrangement of the pressure plate and the spring sheet realizes the effect of pressing the spring-pressing mechanism against the upper surface of the lead frame and the two opposite inner walls of the frame side plate. The control sheet is used to control the elastic deformation of the spring sheet, and the connecting sheet can fix the spring sheet and the control sheet;

[0027] 3. The first pad and the second pad are respectively arranged under the pressure plate and between the base and the lead frame. On the one hand, they protect the surface of the lead frame, and on the other hand, they can also play a shock-absorbing role, which is beneficial to improve the structural integrity of the lead frame during storage and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of a lead frame storage rack according to an embodiment of the present application.

[0029] Figure 2 It is a schematic diagram of the exploded structure of a lead frame storage rack according to an embodiment of the present application.

[0030] Figure 3 yes Figure 2 An enlarged schematic diagram of the pressure plate and pad in part A.

[0031] Figure 4 yes Figure 2 An enlarged schematic diagram of the pad and foot in part B.

[0032] Explanation of the reference numerals: 1. frame; 11. placement cavity; 12. base; 13. side panel; 14. back panel; 141. guide groove; 142. through hole; 15. limit plate; 2. spring-pressing mechanism; 21. pressure plate; 22. spring sheet; 23. connecting plate; 24. control plate; 241. control gap; 3. first pad; 4. second pad; 5. foot. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-4 And embodiments, the present application is further described in detail.

[0034] The present application embodiment discloses a storage rack for lead frames. The words such as "upper" and "lower" used to express the positional relationship in the present embodiment are determined with reference to the placement and installation position of the storage rack for lead frames when it is in normal use, for example, the stacked lead frames are placed above the base 12, and the pad is fixedly connected to the bottom of the pressure plate 21.

[0035] Reference Figure 1 The lead frame storage rack includes a frame body 1 and a spring pressing mechanism 2. The frame body 1 has a placement cavity 11 for placing the lead frame. After the lead frame is stacked in the placement cavity 11 of the frame body 1, the spring pressing mechanism 2 is installed in the placement cavity 11 of the frame body 1 to tighten and fix the lead frame.

[0036] Reference Figure 2 The frame 1 includes a base 12, side panels 13 and a back panel 14. The back panel 14 is vertically fixedly connected to the top of the base 12. The number of the side panels 13 is preferably two. The two side panels 13 are vertically fixedly connected to the two sides of the back panel 14 respectively. The two side panels 13 are vertically fixedly connected to the base 12. The placement cavity 11 is surrounded by the base 12, the two side panels 13 and the back panel 14.

[0037] The two side plates 13 are vertically fixedly connected to the side away from the back plate 14 with a limiting plate 15, which can limit the lead frame to prevent the lead frame from falling out of the placement cavity 11 during the movement after being placed in the frame 1.

[0038] A guide groove 141 is provided on the side of the back plate 14 away from the connection with the base 12. When the operator places the lead frame into the placement cavity 11 of the frame 1, the guide groove 141 can provide the operator with a certain operating space, which is convenient for adjusting the placement angle and position of the lead frame. In order to reduce the weight of the back plate 14 so that the base 12 can bear the weight of the frame 1 and avoid tipping, a plurality of evenly arranged through holes 142 are provided on the back plate 14 of this embodiment, and the through holes 142 reduce the overall weight of the frame 1.

[0039] The spring pressing mechanism 2 includes a pressing plate 21 and a spring sheet 22. In this embodiment, the number of the spring sheets 22 is preferably two, and the two spring sheets 22 are respectively and vertically fixedly connected to the two sides of the pressing plate 21, and the two spring sheets 22 are both facing the opposite side where the lead frame is placed. A connecting sheet 23 is vertically fixedly connected to the two spring sheets 22, and a control sheet 24 is vertically fixedly connected to the side of the two connecting sheets 23 away from the pressing plate 21, and a control gap 241 is left between the two opposite sides of the two control sheets 24.

[0040] In this embodiment, the material of the spring piece 22, the connecting piece 23 and the control piece 24 are preferably metals with a certain elastic deformation ability. When the operator presses the two control pieces 24 in the direction of the control gap 241, the connecting piece 23 drives the spring piece 22 to undergo elastic deformation, and the pressing force between the two spring pieces 22 and the side plate 13 of the frame 1 is reduced, so that the relative position between the spring pressing mechanism 2 and the frame 1 can be adjusted up and down, so that the pressing plate 21 and the upper surface of the lead frame are in contact with each other.

[0041] Reference Figure 3 and Figure 4 In order to protect the surface of the lead frame to a certain extent, pads are fixedly connected under the pressure plate 21 and above the base 12. In this embodiment, the pads are preferably made of rubber material with a certain elastic deformation ability. The rubber pad can produce a certain shock-absorbing effect on the lead frame, and also prevent scratches caused by friction between the lead frame and the pressure plate 21, which affects the subsequent processing flow.

[0042] A foot 5 for providing a shock-absorbing effect is provided below the base 12, and the material of the foot 5 is also preferably rubber with a certain elastic deformation ability. In this embodiment, the number of the foot 5 is preferably four, and the four foot 5 are respectively fixedly connected to the four corner positions of the base 12, which can provide a shock-absorbing effect on the one hand, and on the other hand, the installation of the four foot 5 also improves the balance ability of the frame 1 when it is placed.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lead frame storage rack, characterized in that: It comprises a frame (1) and a spring pressing mechanism (2), wherein the frame (1) has a placement cavity (11) for limiting the orderly stacking of lead frames, and the spring pressing mechanism (2) is installed in the placement cavity (11) and is used to press the top of the lead frame stacked thereon.

2. The lead frame storage rack according to claim 1, characterized in that: The frame (1) comprises a base (12), a side plate (13), a back plate (14) and a limiting plate (15); the number of the side plates (13) is two, and the two side plates (13) are symmetrically connected to opposite sides of the base (12); the back plate (14) is connected to one side of the base (12) and is connected to the two side plates (13); the limiting plate (15) corresponds to the side plates (13) one by one and is connected to a side of the side plate (13) away from the back plate (14); the placement cavity (11) is surrounded by the base (12), the side plates (13), the back plate (14) and the limiting plate (15).

3. The lead frame storage rack according to claim 2, characterized in that: The spring-pressing mechanism (2) comprises a pressing plate (21) for pressing the lead frame and spring sheets (22) symmetrically arranged on opposite sides of the pressing plate (21), one side of the spring sheet (22) extending toward the outside of the placement cavity (11).

4. The lead frame storage rack according to claim 3, characterized in that: The spring-pressing mechanism (2) further comprises a connecting piece (23) and a control piece (24); each spring piece (22) is sequentially connected to a connecting piece (23) and a control piece (24); the two control pieces (24) are arranged in mirror symmetry and are spaced apart to form a control gap (241) for controlling the deformation of the spring piece (22).

5. The lead frame storage rack according to claim 3, characterized in that: A pad is provided on the plate surface of the pressing plate (21) facing the inner side of the placement cavity (11), and the pressing plate (21) is indirectly in contact with the lead frame via the pad.

6. The lead frame storage rack according to claim 2, characterized in that: The back plate (14) is provided with a guide groove (141), and the guide groove (141) is located on a side of the back plate (14) away from the base (12).

7. The lead frame storage rack according to claim 6, characterized in that: The back plate (14) is provided with a plurality of through holes (142), and each of the through holes (142) is evenly arranged on the back plate (14) and is interconnected with the placement cavity (11).

8. The lead frame storage rack according to claim 2, characterized in that: A pad is fixedly connected to the base (12), and the pad is located in the placement cavity (11) and abuts against the lead frame.

9. The lead frame storage rack according to claim 8, characterized in that: A pad foot (5) is provided on a side of the base (12) away from the pad plate.

Images