Lead frame forming die

Abstract

The utility model relates to the technical field of lead frames, and discloses a lead frame forming die which comprises a base and a connecting seat fixedly installed on the outer surface of the base, a lower die body and an upper die body are fixedly installed at the other end, away from the base, of the connecting seat, and a sliding groove is formed in the other end, away from the base, of the lower die body. A fixing plate is fixedly mounted at the position, away from the center line of the base, of the sliding groove, and a fixing block is slidably connected to one side of the fixing plate. According to the lead frame forming mold, through cooperation of the lower frame body and the limiting block, the lower frame body can be placed in the lower mold body, then the movable block drives the limiting block to slide in the sliding groove, then the limiting block is clamped into the clamping groove, rapid limiting of the lower frame body can be achieved, after work is completed, the operation can be repeated, and the working efficiency is improved. And the product can be conveniently and rapidly taken out after being machined, the situation that normal machining is affected due to the fact that the product is prone to displacement due to elasticity can be avoided, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of lead frame technology, specifically a lead frame forming mold. Background Technology

[0002] As a chip carrier for integrated circuits, the lead frame is a key structural component that uses bonding materials, such as gold wire, aluminum wire, or copper wire, to achieve electrical connection between the internal circuit leads of the chip and the external leads, forming an electrical circuit. It acts as a bridge connecting to external wires. Most semiconductor integrated circuits require the use of lead frames, making it an important basic material in the electronics and information industry.

[0003] Chinese Utility Model Patent Publication No. CN 214108477 U discloses a lead frame forming mold. This mold uses a cylinder to drive a punched tube and an auxiliary plate on a moving plate downwards, causing the side of the auxiliary plate closest to the center of the moving plate to contact the side of the clamping plate furthest from the center of the support base. Due to the shape of the auxiliary plate, the clamping plate is pressed towards the center of the support base, thus fixing the lead frame inside the support base cavity. This achieves automatic fixing of the lead frame. However, this lead frame forming mold uses clamping plates and springs for fixing. Due to their strong elasticity, the clamping plates are prone to deformation, affecting the fixing effect. Furthermore, the lack of an alignment structure when the upper and lower molds are closed easily leads to misalignment after alignment, resulting in poor production quality. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a lead frame forming mold, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is as follows: a lead frame forming mold includes a base and a connecting seat fixedly installed on the outer surface of the base. A lower mold body and an upper mold body are fixedly installed at the other end of the connecting seat away from the base. A sliding groove is opened at the other end of the lower mold body away from the base. A fixing plate is fixedly installed at the center line of the sliding groove away from the base. A fixing block is slidably connected to one side of the fixing plate. A connecting column is fixedly installed at the other end of the fixing block away from the fixing plate. A moving block and a limiting block are fixedly installed at the other end of the connecting column away from the fixing plate. A lower frame body is provided on the inner surface of the lower mold body. The lower frame body is adapted to the moving block. An upper mold body is provided at the other end of the lower mold body away from the base. An upper frame body adapted to the lower frame body is provided on the inner surface of the upper mold body.

[0006] Preferably, the lower frame has slots on both sides near the limiting block, and the slots are adapted to the limiting block.

[0007] With the above technical solution, by cooperating with the lower frame and the limiting block, before work, the lower frame can be placed inside the lower mold body, and then the moving block drives the limiting block to slide in the slide groove, and then the limiting block is locked into the slot, which can realize the quick limiting of the lower frame. After the work is completed, the above operation can be repeated to unlock it.

[0008] Preferably, the fixed plate, fixed block, connecting column, moving block and limiting block are provided in two identical sets, and each set of the fixed plate, fixed block, connecting column, moving block and limiting block is provided in two identical sets. The fixed plate, fixed block, connecting column, moving block and limiting block of the two sets are symmetrically distributed about the center line of the lower frame.

[0009] Through the above technical solution, the design of the fixed plate, fixed block, connecting column, moving block and limiting block can fix the lower frame in four directions during processing, which can disperse the pressure it is subjected to and improve its resistance to deformation.

[0010] Preferably, a positioning bolt is provided on the outer surface of the lower mold body, the positioning bolt penetrating the lower mold body and extending to the inner surface of the connecting seat.

[0011] The above technical solution, through the design of the positioning bolt, facilitates quick connection between the connecting seat and the lower mold body, and avoids easy displacement between the connecting seat and the lower mold body, thus preventing it from affecting normal use.

[0012] Preferably, a positioning post is fixedly installed at one end of the upper mold body near the lower mold body, and a positioning groove is provided at the other end of the lower mold body away from the connecting seat, with the positioning post and the positioning groove being positioned opposite each other.

[0013] Through the above technical solution, by designing the positioning pins and positioning grooves, when the upper mold body and the lower mold body are closed, the positioning pins can be inserted into the positioning grooves, which can play a role in aligning the upper mold body and the lower mold body, and prevent displacement during the mold closing process, thereby affecting product quality.

[0014] Preferably, a fixing post is fixedly installed at one end of the upper mold body near the lower mold body, and a slot is provided at the other end of the lower mold body away from the connecting seat, and the fixing post and the slot are compatible.

[0015] Through the above technical solution, by cooperating with the fixed column and the slot, when the positioning column is inserted into the positioning groove, the fixed column is then inserted into the slot, which can play a secondary role in fixing the upper mold body and the lower mold body, thereby further improving the alignment ability between the two and preventing displacement.

[0016] Preferably, the upper mold body is fixedly mounted with a pouring nozzle by bolts at the end away from the lower mold body, and the upper frame body is provided with an injection port at the end near the upper mold body. The pouring nozzle and the injection port are located on the same vertical horizontal line and are interconnected.

[0017] Through the above technical solution and the design of the sprue, after the mold is closed, the lead wire frame can be formed by injecting through the sprue and then moving into the injection port through the sprue.

[0018] Compared with the prior art, this utility model provides a lead frame forming mold, which has the following characteristics:

[0019] Beneficial effects:

[0020] 1. The lead frame forming mold, through the cooperation of the lower frame and the limiting block, can place the lower frame inside the lower mold body, and then the moving block drives the limiting block to slide in the slide groove, so that the limiting block is locked into the inside of the slot, which can realize the quick limiting of the lower frame. After the work is completed, the above operation can be repeated to unlock it, which can facilitate the quick removal of the product after processing and avoid its easy displacement due to elasticity, which would affect normal processing.

[0021] 2. The lead frame forming mold, through the design of positioning pins and positioning grooves, allows the positioning pins to engage with the positioning grooves when the upper and lower mold bodies are closed, thus aligning the upper and lower mold bodies. In conjunction with the fixing pins and slots, when the positioning pins engage with the positioning grooves, the fixing pins are then inserted into the slots, providing a secondary fixing effect on the upper and lower mold bodies. This further improves the alignment between the two, preventing displacement that could affect normal production and result in poor production quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the explosive structure of this utility model. Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the explosive structure of this utility model. Figure 2 ;

[0026] Figure 5 This is a schematic diagram of the disassembled structure of the lower mold body and the lower frame body of this utility model;

[0027] Figure 6 This is a schematic diagram of the disassembled structure of the movable block and the lower frame of this utility model.

[0028] The components are: 1. Base; 2. Connecting seat; 3. Lower mold body; 4. Slide groove; 5. Fixing plate; 6. Fixing block; 7. Connecting column; 8. Moving block; 9. Limiting block; 10. Lower frame body; 11. Slot; 12. Positioning bolt; 13. Upper mold body; 14. Pour nozzle; 15. Positioning column; 16. Fixing column; 17. Slot; 18. Upper frame body; 19. Injection port; 20. Positioning groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1: As Figure 1-6 As shown, the present invention provides a lead frame forming mold, including a base 1 and a connecting seat 2 fixedly installed on the outer surface of the base 1. A lower mold body 3 and an upper mold body 13 are fixedly installed at the other end of the connecting seat 2 away from the base 1. A sliding groove 4 is provided at the other end of the lower mold body 3 away from the base 1. A fixing plate 5 is fixedly installed at the sliding groove 4 away from the center line of the base 1. A fixing block 6 is slidably connected to one side of the fixing plate 5. A connecting column 7 is fixedly installed at the other end of the fixing block 6 away from the fixing plate 5. A moving block 8 and a limiting block 9 are fixedly installed at the other end of the connecting column 7 away from the fixing plate 5. A lower frame 10 is provided on the inner surface of the lower mold body 3. The lower frame 10 is adapted to the moving block 8. An upper mold body 13 is provided at the other end of the lower mold body 3 away from the base 1. An upper frame 18 adapted to the lower frame 10 is provided on the inner surface of the upper mold body 13.

[0031] Specifically, the lower frame 10 has slots 11 on both sides near the limiting block 9. The slots 11 are adapted to the limiting block 9. The advantage is that, through the cooperation of the lower frame 10 and the limiting block 9, before work, the lower frame 10 can be placed inside the lower mold body 3. Then, the moving block 8 drives the limiting block 9 to slide in the slide groove 4, and then the limiting block 9 is locked into the slot 11. This can quickly limit the lower frame 10. After work is completed, the above operation can be repeated to unlock it.

[0032] Specifically, there are two identical sets of fixing plates 5, fixing blocks 6, connecting columns 7, moving blocks 8, and limiting blocks 9. Each set of fixing plates 5, fixing blocks 6, connecting columns 7, moving blocks 8, and limiting blocks 9 consists of two identical sets. The two sets of fixing plates 5, fixing blocks 6, connecting columns 7, moving blocks 8, and limiting blocks 9 are symmetrically distributed about the center line of the lower frame 10. The advantage is that the design of fixing plates 5, fixing blocks 6, connecting columns 7, moving blocks 8, and limiting blocks 9 can fix the lower frame 10 in all four directions during processing, which can disperse the pressure it receives and improve its resistance to deformation.

[0033] Specifically, a positioning bolt 12 is provided on the outer surface of the lower mold body 3. The positioning bolt 12 passes through the lower mold body 3 and extends to the inner surface of the connecting seat 2. The advantage is that the design of the positioning bolt 12 facilitates the quick connection between the connecting seat 2 and the lower mold body 3, and avoids easy displacement between the connecting seat 2 and the lower mold body 3, thus avoiding affecting its normal use.

[0034] Example 2: Figure 2-6 As shown, this is an improvement on the previous embodiment.

[0035] Specifically, a positioning pin 15 is fixedly installed at one end of the upper mold body 13 near the lower mold body 3, and a positioning groove 20 is opened at the other end of the lower mold body 3 away from the connecting seat 2. The positioning pin 15 and the positioning groove 20 are aligned. The advantage is that, through the design of the positioning pin 15 and the positioning groove 20, when the upper mold body 3 and the lower mold body 13 are closed, the positioning pin 15 can be inserted into the positioning groove 20, which can play a role in aligning the upper mold body 3 and the lower mold body 13, avoiding displacement during the mold closing process, thereby affecting product quality.

[0036] Specifically, a fixing post 16 is fixedly installed at one end of the upper mold body 13 near the lower mold body 3, and a slot 17 is opened at the other end of the lower mold body 3 away from the connecting seat 2. The fixing post 16 and the slot 17 are compatible. The advantage is that, through the cooperation of the fixing post 16 and the slot 17, when the positioning post 15 is inserted into the positioning groove 20, the fixing post 16 is then inserted into the slot 17, which can play a secondary fixing role for the upper mold body 3 and the lower mold body 13, which can further improve the alignment ability between the two and avoid displacement.

[0037] Specifically, a sprue 14 is fixedly installed at the end of the upper mold body 13 away from the lower mold body 3 by bolts, and an injection port 19 is opened at the end of the upper frame body 18 near the upper mold body 13. The sprue 14 and the injection port 19 are located on the same vertical horizontal line and are interconnected. The advantage is that, through the design of the sprue 14, after the mold is closed, it can be injected through the sprue 14, and then move through the sprue 14 to the injection port 19, and then flow into the upper frame body 18 and the lower frame body 10, so as to realize the forming of the lead frame.

[0038] Working principle: During use, the lower frame 10 is placed inside the lower mold 3. Since the fixed plate 5, fixed block 6, connecting column 7, moving block 8, and limiting block 9 are arranged in two identical sets, two in each set, and the two sets are symmetrically distributed about the center line of the lower frame 10, the moving block 8 drives the limiting block 9 to slide in the slide groove 4 until the limiting block 9 is engaged in the slots 11 opened on both sides of the lower frame 10 near the limiting block 9. This achieves rapid limiting of the lower frame 10 in four directions, dispersing the pressure it experiences during processing and improving its resistance to deformation. After the work is completed, the lower frame 10 can be unlocked by reversing the operation. The positioning bolt 12 on the outer surface of the lower mold 3 penetrates the lower mold 3 and extends to the inner surface of the connecting seat 2, facilitating rapid connection between the connecting seat 2 and the lower mold 3 and preventing displacement between them, which would affect normal use. When the upper mold 13 and the lower mold 3 are closed, the positioning bolt 12 fixedly installed on one end of the upper mold 13 near the lower mold 3... Positioning post 15 is inserted into the positioning groove 20 at the other end of the lower mold body 3 away from the connecting seat 2, which serves to align the upper mold body 13 and the lower mold body 3. Then, fixing post 16, which is fixedly installed at the end of the upper mold body 13 near the lower mold body 3, is inserted into the slot 17 at the other end of the lower mold body 3 away from the connecting seat 2, which achieves secondary fixation of the upper mold body 13 and the lower mold body 3, further enhancing the alignment ability between the two and preventing displacement during mold closing that would affect product quality. A pouring nozzle 14 is fixedly installed at the end of the upper mold body 13 away from the lower mold body 3 by bolts. An injection port 19 is opened at the end of the upper frame 18 near the upper mold body 13, and the pouring nozzle 14 and the injection port 19 are located on the same vertical horizontal line and are interconnected. After the mold is closed, material is injected through the pouring nozzle 14. The material enters the injection port 19 through the pouring nozzle 14 and then flows into the upper frame 18 and the lower frame 10, thus forming the lead frame.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lead frame forming mold, comprising a base (1) and a connecting seat (2) fixedly mounted on the outer surface of the base (1), wherein a lower mold body (3) and an upper mold body (13) are fixedly mounted on the other end of the connecting seat (2) away from the base (1), characterized in that: The lower mold body (3) has a sliding groove (4) at the other end away from the base (1). A fixing plate (5) is fixedly installed at the center line of the sliding groove (4) away from the base (1). A fixing block (6) is slidably connected to one side of the fixing plate (5). A connecting column (7) is fixedly installed at the other end of the fixing block (6) away from the fixing plate (5). A moving block (8) and a limiting block (9) are fixedly installed at the other end of the connecting column (7) away from the fixing plate (5). A lower frame (10) is provided on the inner surface of the lower mold body (3). The lower frame (10) is adapted to the moving block (8). An upper mold body (13) is provided at the other end of the lower mold body (3) away from the base (1). An upper frame (18) adapted to the lower frame (10) is provided on the inner surface of the upper mold body (13).

2. The lead frame forming mold according to claim 1, characterized in that: The lower frame (10) has slots (11) on both sides near the limiting block (9), and the slots (11) are adapted to the limiting block (9).

3. The lead frame forming mold according to claim 1, characterized in that: The fixed plate (5), fixed block (6), connecting column (7), moving block (8) and limiting block (9) are provided in two identical sets. Each set of the fixed plate (5), fixed block (6), connecting column (7), moving block (8) and limiting block (9) is provided in two identical sets. The two sets of the fixed plate (5), fixed block (6), connecting column (7), moving block (8) and limiting block (9) are symmetrically distributed about the center line of the lower frame (10).

4. The lead frame forming mold according to claim 1, characterized in that: The lower mold body (3) is provided with a positioning bolt (12) on its outer surface. The positioning bolt (12) penetrates the lower mold body (3) and extends to the inner surface of the connecting seat (2).

5. The lead frame forming mold according to claim 1, characterized in that: A positioning post (15) is fixedly installed at one end of the upper mold body (13) near the lower mold body (3), and a positioning groove (20) is opened at the other end of the lower mold body (3) away from the connecting seat (2), with the positioning post (15) and the positioning groove (20) positioned opposite each other.

6. The lead frame forming mold according to claim 1, characterized in that: A fixing post (16) is fixedly installed at one end of the upper mold body (13) near the lower mold body (3), and a slot (17) is provided at the other end of the lower mold body (3) away from the connecting seat (2). The fixing post (16) and the slot (17) are compatible.

7. The lead frame forming mold according to claim 1, characterized in that: The upper mold body (13) is fixedly installed with a pouring nozzle (14) by bolts at one end away from the lower mold body (3). The upper frame body (18) is provided with an injection port (19) at one end near the upper mold body (13). The pouring nozzle (14) and the injection port (19) are located on the same vertical horizontal line and are interconnected.

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