A high-density common pin reinforced frame

Abstract

The present invention provides a high-density common pin reinforced frame. The high-density common pin reinforced frame includes: a first frame body and a second frame body, the first frame body is provided with at least 216 groups of first plastic sealing strips, the first plastic sealing strips are provided with at least three groups of first plastic sealing cavities, the inner side of the first plastic sealing cavity is fixedly connected with a false foot, and the second frame body is provided with at least 216 groups of second plastic sealing strips. The high-density common pin reinforced frame provided by the present invention has 18 rows of frames, a higher product density, and the number of products in each strip is as many as 1296, which saves more frame metal material and has higher production capacity; a plastic sealing mold with a pair of 6-pin toothed inserts can be used to solve the problem of using different plastic sealing molds for 5 and 6 different pins at the same time, and a set of molds can be used to be compatible with two different pin products, which has a wider applicability; reinforced hooks are used inside the second frame body to greatly ensure the strength of the product pins.

Description

Technical Field

[0001] The invention relates to the technical field of frame structures, and in particular to a high-density common pin-reinforced frame. Background Art

[0002] As the chip carrier of integrated circuits, the lead frame is a key structural component that uses bonding materials to achieve electrical connection between the internal circuit lead ends of the chip and the external leads to form an electrical circuit. It serves as a bridge to connect with external wires. Lead frames are required in most semiconductor integrated blocks and are an important basic material in the electronic information industry.

[0003] like Figure 1 , Figure 2 , Figure 3 and Figure 4 They are the existing five-pin and six-pin strip structures and unit structures respectively. The existing domestically produced sot353 frames still use the old low-density, narrow-edge width, and the number of pins needs to correspond one-to-one with the plastic encapsulation mold and cannot be shared. Each frame has 176 units, and the plastic encapsulation mold is not universal. Different plastic encapsulation molds and toothed inserts need to be designed according to each different number of pins to match them.

[0004] Therefore, it is necessary to provide a high-density common pin reinforcement frame to solve the above technical problems. Summary of the invention

[0005] The invention provides a high-density common pin-reinforced frame, which solves the problems of low density, narrow side width, and the number of pins of the old frame needing to correspond one-to-one with the plastic packaging mold and being unable to be shared.

[0006] In order to solve the above technical problems, the high-density common pin-reinforced frame provided by the present invention includes: a first frame body and a second frame body, the first frame body is provided with at least two hundred and sixteen groups of first plastic sealing strips, the first plastic sealing strip is provided with at least three groups of first plastic sealing cavities, the inner side of the first plastic sealing cavity is fixedly connected with a false foot, the second frame body is provided with at least two hundred and sixteen groups of second plastic sealing strips, the second plastic sealing strip is provided with at least three groups of second plastic sealing strips, and the inner pins of the second plastic sealing strips are fixedly connected with hooks; the false feet and the interior of the first plastic sealing cavity form a six-pin structure.

[0007] Preferably, the first plastic sealing strips are distributed in eighteen rows longitudinally and in twenty-four rows transversely.

[0008] Preferably, the second plastic sealing strips are arranged in eighteen rows in the longitudinal direction and in twenty-four rows in the transverse direction.

[0009] Preferably, the high-density common pin-reinforced frame needs to be stored in a dedicated storage device after forming, and the storage device includes a storage rack and a frame body, and limited slide grooves are provided on both sides of the inner wall of the storage rack; a connecting rack, the surface of the connecting rack is slidably connected to the inner surface of the limiting slide groove, one side of the connecting rack is provided with a side recessed plate, and the connecting rack is provided with two groups, and a connecting piece is fixedly connected between the two groups of connecting racks; a push rod, the push rod is provided on one side of the side recessed plate, the outer surface of the push rod is sleeved with a compression spring, one end of the compression spring is fixedly connected with a linkage plate, one side of the linkage plate is fixedly connected to one end of the push rod, and two transmission holes are provided on the linkage plate; two transmission rods, one end of the two transmission rods is rotatably connected to the inner wall of the connecting rack through two rotating shafts respectively, and the other end of the transmission rod is fixedly connected with a clamping pad.

[0010] Preferably, the inner cross-section of the limiting slide groove is an arc-shaped structure, and the two limiting slide grooves located on the same horizontal plane form a group of mounting structures.

[0011] Preferably, the surface of the side concave plate does not contact the inner wall of the limiting sliding groove, and the side concave plate is an arc-shaped structure.

[0012] Preferably, the structures on the two groups of connecting frames are identical and symmetrically distributed, the thickness of the connecting piece is matched with the thickness of the frame body, and the surface of the frame body is matched with the inner surface of the limiting slide groove.

[0013] Preferably, one end of the push rod passes through the side concave plate and extends to the inside of the connecting frame, and the surface of the push rod is slidably connected to the side concave plate.

[0014] Preferably, the other end of the transmission rod passes through the transmission hole and extends to the other side of the linkage plate, and the surface of the transmission rod is transmission-connected to the inner surface of the transmission hole.

[0015] Preferably, the transmission structures of the two transmission rods are identical and symmetrically distributed, the structures on the two transmission rods are identical, and the two clamping pads are clamped on the outer surface of the frame body.

[0016] Compared with the related art, the high-density common pin reinforced frame provided by the present invention has the following beneficial effects:

[0017] The present invention provides a high-density common pin-reinforced frame, an 18-row frame, a higher product density, and up to 1296 products in each strip, which saves more frame metal material and has a higher production capacity; a pair of 6-pin toothed insert plastic encapsulation molds can be used to solve the problem of using different plastic encapsulation molds for 5 and 6 different pins at the same time, and a set of molds can be used to be compatible with two different pin products, which has a wider applicability; reinforced hooks are used inside the second frame to greatly ensure the strength of the product pins. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the existing 4R framework;

[0019] Figure 2 for Figure 1 A schematic diagram of the five-pin structure of the frame shown;

[0020] Figure 3 It is a structural diagram of the existing 4R framework;

[0021] Figure 4 for Figure 3 Schematic diagram of the six-pin structure of the frame shown

[0022] Figure 5 A structural schematic diagram of a first embodiment of a high-density common pin-reinforced frame provided by the present invention;

[0023] Figure 6 for Figure 5 The structural schematic diagram of the first plastic sealing strip part shown;

[0024] Figure 7 for Figure 6 The structural schematic diagram of the first plastic packaging cavity part shown;

[0025] Figure 8 for Figure 6 A schematic diagram of the structure between two groups of first plastic sealing cavities shown;

[0026] Fig. 9 Another structural schematic diagram of the first embodiment of the high-density common pin reinforced frame provided by the present invention;

[0027] Fig.10 for Figure 5 The structural schematic diagram of the second plastic sealing strip part shown;

[0028] Fig.11 for Figure 6 The structural schematic diagram of the second plastic sealing cavity part shown;

[0029] Fig.12 for Figure 6 A schematic diagram of the structure between two groups of second plastic sealing cavities shown;

[0030] Fig.13 A schematic structural diagram of a second embodiment provided by the present invention;

[0031] Fig.14 for Fig.13 An enlarged schematic diagram of part A is shown;

[0032] Fig.15 for Fig.14 An enlarged schematic diagram of part B is shown;

[0033] Fig.16 for Fig.13 The structural schematic diagram of the connecting frame part is shown.

[0034] Numbers in the figure: 1. first frame, 11. first plastic sealing strip, 12. first plastic sealing cavity, 13. false foot, 2. second frame, 21. second plastic sealing strip, 22. second plastic sealing cavity, 23. hook foot, 3. storage rack, 31. limiting slide groove, 4. frame body, 5. connecting frame, 51. side recessed plate, 52. connecting piece, 6. push rod, 61. compression spring, 62. linkage plate, 621. transmission hole, 7. transmission rod, 71. clamping pad. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0036] First embodiment:

[0037] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 ,in, Figure 1 It is a structural diagram of the existing 4R framework; Figure 2 for Figure 1 A schematic diagram of the five-pin structure of the frame shown; Figure 3 It is a structural diagram of the existing 4R framework; Figure 4 for Figure 3 Schematic diagram of the six-pin structure of the frame shown Figure 5 A structural schematic diagram of a first embodiment of a high-density common pin-reinforced frame provided by the present invention; Figure 6 for Figure 5 The structural schematic diagram of the first plastic sealing strip part shown; Figure 7 for Figure 6The structural schematic diagram of the first plastic packaging cavity part shown; Figure 8 for Figure 6 A schematic diagram of the structure between two groups of first plastic sealing cavities shown; Fig. 9 Another structural schematic diagram of the first embodiment of the high-density common pin reinforced frame provided by the present invention; Fig.10 for Figure 5 The structural schematic diagram of the second plastic sealing strip part shown; Fig.11 for Figure 6 The structural schematic diagram of the second plastic sealing cavity part shown; Fig.12 for Figure 6 A high-density common pin-reinforced frame includes: a first frame 1 and a second frame 2, the first frame 1 is provided with at least 216 groups of first plastic sealing strips 11, the first plastic sealing strips 11 are provided with at least three groups of first plastic sealing cavities 12, the inner side of the first plastic sealing cavity 12 is fixedly connected with a false foot 13, the second frame 2 is provided with at least 216 groups of second plastic sealing strips 21, the second plastic sealing strips 21 are provided with at least three groups of second plastic sealing strips 22, the inner side of the second plastic sealing strip 22 is fixedly connected with a hook 23; the false foot 13 and the inside of the first plastic sealing cavity 12 form a six-pin structure.

[0038] 18-row frame, higher product density, up to 1296 products in each strip, saving more frame metal material and having higher production capacity;

[0039] A set of 6-pin tooth-shaped plastic encapsulation molds can be used to solve the problem of using different plastic encapsulation molds for 5 and 6 pins. One set of molds can be compatible with two different pin products, which has a wider applicability.

[0040] The second frame 2 has a reinforced hook 23 inside, which greatly ensures the strength of the product pins.

[0041] The first frame 1 is provided with a false foot 13 on the basis of the original five pins, so that the first plastic sealing cavity 12 of the first plastic sealing strip 11 on the first frame 1 can use a six-pin structure. After the frame enters the toothed insert of the mold, the false foot 13 is used to block the plastic sealing cavity to prevent the resin from leaking from the empty pins, thereby achieving a one-mold-for-multiple-purposes effect. The corresponding false foot 13 is separated during the rib cutting and molding to maintain the original product appearance.

[0042] The first plastic sealing strips 11 are arranged in eighteen rows in the longitudinal direction and in twenty-four rows in the transverse direction.

[0043] The second plastic sealing strips 21 are arranged in eighteen rows in the longitudinal direction, and in twenty-four rows in the transverse direction.

[0044] The product density of a single frame strip is higher and more material-saving, reaching 1,296 pieces per strip, which is 7.3 times the 176 pieces of the original 4R frame strip. By adding a false foot design, the plastic encapsulation mold is a 6-position toothed insert, which is compatible with product frames with different numbers of pins. There is no need to separate the original 5-pin and 6-pin plastic encapsulation molds. The addition of pin reinforcement hooks 23 strengthens the pin strength of the second frame 2.

[0045] Compared with the related art, the high-density common pin reinforced frame provided by the present invention has the following beneficial effects:

[0046] The 18-row frame has a higher product density, with up to 1,296 products in each strip, which saves more frame metal material and has a higher production capacity. A pair of 6-pin toothed insert plastic encapsulation molds can be used to solve the problem of using different plastic encapsulation molds for 5 and 6 different pins. A set of molds can be used to be compatible with two different pin products, which has a wider applicability. The second frame 2 uses reinforced hooks 23 inside to greatly ensure the strength of the product pins.

[0047] Second embodiment:

[0048] See also Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 Based on the high-density common pin reinforcement frame provided by the first embodiment of the present application, the second embodiment of the present application proposes another high-density common pin reinforcement frame. The second embodiment is only a preferred method of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0049] Specifically, the difference of the high-density common pin reinforced frame provided in the second embodiment of the present application is that the high-density common pin reinforced frame needs to be stored in a dedicated storage device after molding, and the storage device includes a storage rack 3 and a frame body 4, and both sides of the inner wall of the storage rack 3 are provided with a limiting slide groove 31; a connecting rack 5, the surface of the connecting rack 5 is slidably connected to the inner surface of the limiting slide groove 31, and a side concave plate 51 is provided on one side of the connecting rack 5, and the connecting rack 5 is provided with two groups, and the two groups of connecting racks 5 are connected to each other. A connecting piece 52 is fixedly connected between the two sides of the connecting frame 5; a push rod 6, which is arranged on one side of the side concave plate 51, and a compression spring 61 is sleeved on the outer surface of the push rod 6, one end of the compression spring 61 is fixedly connected to a linkage plate 62, one side of the linkage plate 62 is fixedly connected to one end of the push rod 6, and two transmission holes 621 are provided on the linkage plate 62; two transmission rods 7, one end of the two transmission rods 7 are rotatably connected to the inner wall of the connecting frame 5 through two rotating shafts respectively, and the other end of the transmission rod 7 is fixedly connected to a clamping pad 71.

[0050] When the storage rack 3 is in use, corresponding shielding covers are provided on the front and back to facilitate packaging of the storage rack 3. The connection method of the shielding covers can be selected according to actual use requirements, and a hinge connection method is preferred.

[0051] Since the frame body 4 is easily bent after processing, it needs to be placed flat or vertically during storage so that each frame body 4 is distributed in parallel. However, the placement in the prior art does not have any limiting and fixing structure, so that the frame body 4 is easily bent by the power of transportation or movement during storage, and even falls off from the storage position, thereby reducing the storage stability of the frame body 4.

[0052] By using two groups of connecting frames 5, the two groups of connecting frames 5 are interconnected, so that the frame body 4 can be installed between the two groups of connecting frames 5. The tail ends of the two groups of connecting frames 5 are connected and fixed by connecting pieces 52 to ensure the stability between the two groups of connecting frames 5 and maintain the synchronization and stability of the two groups of connecting frames 5 when being taken and moved.

[0053] The inner side of the connecting frame 5 is provided with a clamping structure with a clamping pad 71, which facilitates clamping and limiting the side of the frame body 4 to ensure the stability of the frame body 4 when installed between two sets of connecting frames 5, so that the frame body 4 will not become loose or fall off when affected by shaking, thereby further improving the storage stability of the frame body 4.

[0054] At the same time, when the frame bodies 4 are stably clamped, they will not collide with each other due to shaking when they are stacked in multiple layers, which reduces friction damage to the frame bodies 4 during storage, improves the storage stability of the frame bodies 4 and avoids collision damage between the frame bodies 4.

[0055] The inner cross-section of the limiting sliding groove 31 is an arc-shaped structure, and two limiting sliding grooves 31 located on the same horizontal plane form a set of installation structures.

[0056] The arc-shaped limiting sliding groove 31 is matched with the outer surface of the connecting frame 5, so that the connecting frame 5 can only be installed or disassembled in the longitudinal direction after installation, and will not move horizontally, thereby ensuring the stability of the connecting frame 5 after installation.

[0057] The surface of the side concave plate 51 does not contact the inner wall of the limiting sliding groove 31 , and the side concave plate 51 is an arc-shaped structure.

[0058] The side recessed plate 51 provides support for the push rod 6 , and the inwardly concave side recessed plate 51 provides storage space for the push rod 6 , thereby preventing the push rod 6 from affecting the normal use of the connecting frame 5 and ensuring the stability of the connection between the connecting frame 5 and the limiting slide groove 31 .

[0059] The structures on the two groups of connecting frames 5 are identical and symmetrically distributed. The thickness of the connecting member 52 matches the thickness of the frame body 4 , and the surface of the frame body 4 matches the inner surface of the limiting slide groove 31 .

[0060] One end of the push rod 6 passes through the side concave plate 51 and extends to the inside of the connecting frame 5 , and the surface of the push rod 6 is slidably connected to the side concave plate 51 .

[0061] The other end of the transmission rod 7 passes through the transmission hole 621 and extends to the other side of the linkage plate 62 , and the surface of the transmission rod 7 is transmission-connected to the inner surface of the transmission hole 621 .

[0062] The transmission structures of the two transmission rods 7 are identical and symmetrically distributed, the structures on the two transmission rods 7 are identical, and the two clamping pads 71 ​​are clamped on the outer surface of the frame body 4 .

[0063] When in use, the push rods 6 on the two sets of connecting frames 5 are pushed synchronously, and the push rods 6 synchronously drive the linkage plate 62 to move, and the linkage plate 62 pushes the transmission rod 7 upward through the bottom of the inner wall of the transmission hole 621. When the transmission rod 7 is pushed upward, the two sets of relative transmission rods 7 drive the corresponding clamping pads 71 ​​to move away from each other, so that the clamping pads 71 ​​are in an expanded state, and at this time, it is convenient to install the frame body 4 into the inner side of the expanded clamping pad 71;

[0064] Push the two sides of the frame body 4 into the inner side of the clamping pads 71 ​​unfolded on both sides respectively. When the frame body 4 is installed, release the push rod 6. The linkage plate 62 moves toward the side concave plate 51 under the tension of the compression spring 61. When the linkage plate 62 moves, it pulls the two groups of symmetrical transmission rods 7 to rotate toward the side close to each other through the two groups of transmission holes 621. The two groups of transmission rods 7 drive the two groups of clamping pads 71 ​​to approach each other synchronously and clamp and fix the side of the frame body 4, thereby completing the installation of the frame body 4.

[0065] The connecting frame 5 with the frame body 4 installed thereon is inserted into the two sets of limiting sliding grooves 31 in the horizontal direction to complete the installation and storage of the frame body 4.

[0066] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-density common pin-reinforced frame, characterized in that: include: A first frame and a second frame, wherein the first frame is provided with at least 216 groups of first plastic sealing strips, the first plastic sealing strip is provided with at least three groups of first plastic sealing cavities, the inner side of the first plastic sealing cavity is fixedly connected with a false foot, the second frame is provided with at least 216 groups of second plastic sealing strips, the second plastic sealing strip is provided with at least three groups of second plastic sealing strips, and the inner side of the second plastic sealing strip is fixedly connected with a hook needle; The false foot and the interior of the first plastic packaging cavity form a six-foot structure; The high-density common pin-reinforced frame needs to be stored in a dedicated storage device after molding. The storage device includes a storage rack and a frame body. Both sides of the inner wall of the storage rack are provided with limited sliding grooves. A connecting frame, the surface of which is slidably connected to the inner surface of the limiting slide groove, a side concave plate is provided on one side of the connecting frame, and two groups of the connecting frames are provided, and a connecting piece is fixedly connected between the two groups of the connecting frames; A push rod, the push rod is arranged on one side of the side concave plate, a compression spring is sleeved on the outer surface of the push rod, one end of the compression spring is fixedly connected to a linkage plate, one side of the linkage plate is fixedly connected to one end of the push rod, and two transmission holes are provided on the linkage plate; Two transmission rods, one end of each of the transmission rods being rotatably connected to the inner wall of the connecting frame through two rotating shafts, and the other end of each of the transmission rods being fixedly connected to a clamping pad; The surface of the side concave plate does not contact the inner wall of the limiting sliding groove, and the side concave plate is an arc-shaped structure; The structures on the two groups of connecting frames are identical and symmetrically distributed, the thickness of the connecting piece is matched with the thickness of the frame body, and the surface of the frame body is matched with the inner surface of the limiting slide groove.

2. The high-density common pin reinforced frame according to claim 1, characterized in that: The first plastic sealing strips are arranged in eighteen rows in the longitudinal direction and in twenty-four rows in the transverse direction.

3. The high-density common pin reinforced frame according to claim 1, characterized in that: The second plastic sealing strips are arranged in eighteen rows in the longitudinal direction and in twenty-four rows in the transverse direction.

4. The high-density common pin reinforced frame according to claim 1, characterized in that: The inner cross-section of the limiting slide groove is an arc-shaped structure, and two limiting slide grooves located on the same horizontal plane form a group of mounting structures.

5. The high-density common pin reinforced frame according to claim 1, characterized in that: One end of the push rod passes through the side concave plate and extends to the interior of the connecting frame, and the surface of the push rod is slidably connected to the side concave plate.

6. The high-density common pin reinforced frame according to claim 1, characterized in that: The other end of the transmission rod passes through the transmission hole and extends to the other side of the linkage plate, and the surface of the transmission rod is transmission-connected to the inner surface of the transmission hole.

7. The high-density common pin reinforced frame according to claim 1, characterized in that: The transmission structures of the two transmission rods are identical and symmetrically distributed, the structures on the two transmission rods are identical, and the two clamping pads are clamped on the outer surface of the frame body.

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