A multi-position progressive die for lead frame

Abstract

The utility model relates to lead frame technical field, and disclose a kind of multi-station progressive die for lead frame, including base, lower die seat, upper die seat and lead frame body, the one end of lower die seat away from base is fixedly installed with locating post, limiting cylinder and lower die frame assembly, the one end of upper die seat away from lower die seat is penetrated and is provided with through slot, the one end of upper die seat away from lower die seat is fixedly installed with upper die frame assembly, the lower die frame assembly includes mould body one, the outer surface of mould body one is threadedly connected with locating bolt one, the outer surface of mould body one is provided with inclined slot, recess and clamping slot.The multi-station progressive die for lead frame, by the design of locating bolt one and locating bolt two, the replacement of mould body one and mould body two can be realized, the order of mould body one and mould body two can be adjusted according to actual working condition, so as to adjust the different working mode of progressive die, and the integrated processing of lead frame can be realized, the production efficiency can be improved, and the use can be facilitated.

Description

Technical Field

[0001] This utility model relates to the field of lead frame technology, specifically a multi-station progressive die for lead frames. Background Technology

[0002] As a key component connecting chips to external circuits, the lead frame plays a crucial role in the performance and cost of electronic products due to its manufacturing precision and production efficiency. Lead frames are often produced using molds, and progressive dies are a type of mold. Because they consist of multiple stations, each station is sequentially linked to complete different processes. A series of different stamping processes are completed in one stroke of the punch press, which can improve its production efficiency.

[0003] While existing technologies can produce lead frames, most of them use a single mold, which not only leads to low production efficiency and affects production capacity, but also makes it difficult to achieve integrated processing of lead frames. In addition, although existing technologies have an alignment structure designed during the mold closing process, the alignment structure is relatively simple and is prone to misalignment during alignment, thereby affecting production quality and making it difficult to promote its use. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a multi-station progressive die for a lead frame, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is: a multi-station progressive die for a lead frame, including a base, a lower die base, an upper die base and a lead frame body. The lower die base is fixedly installed with a positioning post, a limiting cylinder and a lower die frame assembly at the end away from the base. The upper die base is provided with a through slot at the end away from the lower die base. The upper die base is fixedly installed with an upper die frame assembly at the end away from the lower die base.

[0006] The lower mold frame assembly includes a mold body, a positioning bolt threadedly connected to the outer surface of the mold body, and an inclined groove, a recess, and a slot on the outer surface of the mold body.

[0007] The upper mold frame assembly includes a second mold body. The outer surface of the second mold body is fixedly equipped with a locking post, a protrusion, and a protruding post. The outer surface of the second mold body is provided with a fixing bolt. The lower mold frame assembly and the upper mold frame assembly are in one-to-one correspondence.

[0008] Preferably, a locking block is fixedly installed at one end of the mold body near the upper mold frame assembly. The locking block is adapted to the upper mold frame assembly, and the groove and protrusion are located on the same vertical horizontal line.

[0009] Through the above technical solution, by adapting the locking block to the upper mold frame assembly, when the mold is closed, the locking block can accurately align with the upper mold frame assembly, playing a preliminary positioning role, so that the lower mold frame assembly can be quickly aligned with the upper mold frame assembly. Furthermore, the groove and the protrusion are located on the same vertical horizontal line. During the mold closing process, the protrusion is embedded in the groove, further enhancing the positioning accuracy of the upper and lower mold frame assemblies. At the same time, during stamping, the protrusion can remove the metal from the surface of the lead frame body, enabling normal operation.

[0010] Preferably, the outer surface of the second mold body is provided with a second positioning bolt, the first positioning bolt penetrates the first mold body and extends to the inner surface of the lower mold base, and the second positioning bolt penetrates the second mold body and extends to the inner surface of the upper mold base.

[0011] Through the above technical solution, the design of positioning bolt one and positioning bolt two allows for the replacement of mold body one and mold body two. The order of mold body one and mold body two can be adjusted according to the actual working conditions, thereby adjusting the different working modes of the progressive die.

[0012] Preferably, a limiting block one is fixedly installed at one end of the lower mold base, and a limiting post one is provided on the outer surface of the limiting block one. A limiting block two is fixedly installed at one end of the upper mold base, and a limiting post two is provided on the outer surface of the limiting block two. The limiting block one and the limiting post one correspond one-to-one with the limiting block two and the limiting post two.

[0013] Through the above technical solution, by having limit block one and limit post one correspond one-to-one with limit block two and limit post two, during the mold opening and closing process, limit post one and limit post two cooperate with each other to limit the relative position of the upper mold base and the lower mold base, and prevent the upper mold base from shifting or shaking during stamping.

[0014] Preferably, the positioning pins and sleeves are installed by insertion, and there are four identical positioning pins and sleeves located at the four corners of the lower mold base and the upper mold base.

[0015] Through the above technical solution, the positioning pin and the sleeve cooperate to accurately position the upper and lower mold bases during mold installation and use, thereby further enhancing the installation accuracy and stability of the upper and lower mold bases.

[0016] Preferably, the lead frame body is located between the lower mold base and the upper mold base, and the lower mold frame assembly and the upper mold frame assembly correspond to the lead frame body.

[0017] With the above technical solution, the lead frame body is placed between the lower die base and the upper die base, and the lower die frame assembly and the upper die frame assembly correspond to the lead frame body. During the stamping operation, the upper die base moves downward, the upper die frame assembly applies pressure to the lead frame body, and the lower die frame assembly provides support and reaction force. The two work together to stamp the lead frame body, completing various stamping processes of the lead frame body by the multi-station progressive die.

[0018] Preferably, a fixing frame is fixedly installed at one end of the base near the lower mold base. The fixing frame has an "L" shaped cross-section. A discharge hopper is fixedly installed at one end of the fixing frame away from the lower mold base. The other end of the discharge hopper is located on the base away from the lower mold frame assembly.

[0019] With the above technical solution, one end of the "L"-shaped fixing frame is fixed to the base near the lower mold base, and the other end is equipped with a discharge hopper. The other end of the discharge hopper is located on the base away from the lower mold frame assembly. After stamping, the waste or finished product of the lead frame body can be quickly discharged through the discharge hopper, avoiding the accumulation of waste around the mold and affecting subsequent processing. It also facilitates the collection and sorting of waste and finished products.

[0020] Compared with the prior art, this utility model provides a multi-station progressive die for a lead frame, which has the following advantages:

[0021] 1. This lead frame uses a multi-station progressive die. Through the design of positioning bolt one and positioning bolt two, it is possible to replace mold body one and mold body two. The order of mold body one and mold body two can be adjusted according to the actual working conditions, thereby adjusting the different working modes of the progressive die. Furthermore, it can realize the integrated processing of the lead frame, which can improve production efficiency and facilitate its widespread use.

[0022] 2. This lead frame uses a multi-station progressive die. Limiting block one and limiting post one correspond one-to-one with limiting block two and limiting post two. It is adapted to the upper mold frame assembly by a locking block. When the mold is closed, the locking block can accurately align with the upper mold frame assembly, playing a preliminary positioning role, so that the lower mold frame assembly and the upper mold frame assembly can be quickly aligned. It can realize multiple alignment methods, so that when the upper and lower molds are closed, they can avoid the easy deviation and shaking of the two, which would lead to poor production quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the disassembled structure of the lower mold base and the upper mold base of this utility model. Figure 1;

[0026] Figure 4 This is a schematic diagram of the disassembled structure of the lower mold base and the upper mold base of this utility model. Figure 2 ;

[0027] Figure 5 This is a three-dimensional structural diagram of the lower mold base and lower mold frame assembly of this utility model.

[0028] The components are as follows: 1. Base; 2. Lower mold base; 3. Positioning pin; 4. Limiting block one; 5. Limiting pin one; 6. Limiting cylinder; 7. Lower mold frame assembly; 701. Mold body one; 702. Positioning bolt one; 703. Inclined groove; 704. Groove; 705. Locking block; 706. Locking slot; 8. Upper mold base; 9. Through groove; 10. Upper mold frame assembly; 1001. Mold body two; 1002. Locking pin; 1003. Protrusion; 1004. Protrusion; 1005. Positioning bolt two; 1006. Fixing bolt; 11. Limiting block two; 12. Limiting pin two; 13. Sleeve; 14. Fixing frame; 15. Discharge hopper; 16. Lead wire frame body. 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 1-5 As shown, the present invention provides a multi-station progressive die for a lead frame, including a base 1, a lower die base 2, an upper die base 8, and a lead frame body 16. The lower die base 2 is fixedly installed with a positioning post 3, a limiting cylinder 6, and a lower die frame assembly 7 at one end away from the base 1. The upper die base 8 is provided with a through groove 9 at one end away from the lower die base 2, and the upper die frame assembly 10 is fixedly installed at one end away from the lower die base 2.

[0031] The lower mold frame assembly 7 includes a mold body 701, a positioning bolt 702 threadedly connected to the outer surface of the mold body 701, and a slanted groove 703, a groove 704 and a slot 706 formed on the outer surface of the mold body 701.

[0032] The upper mold frame assembly 10 includes a second mold body 1001. The outer surface of the second mold body 1001 is fixedly installed with a locking post 1002, a protrusion 1003 and a protrusion 1004. The outer surface of the second mold body 1001 is provided with a fixing bolt 1006. The lower mold frame assembly 7 and the upper mold frame assembly 10 are in one-to-one correspondence.

[0033] Specifically, a locking block 705 is fixedly installed at one end of the mold body 701 near the upper mold frame assembly 10. The locking block 705 is adapted to the upper mold frame assembly 10. The groove 704 and the protrusion 1003 are located on the same vertical horizontal line. The advantage is that, through the adaptation of the locking block 705 to the upper mold frame assembly 10, when the mold is closed, the locking block 705 can accurately align with the upper mold frame assembly 10, playing a preliminary positioning role, so that the lower mold frame assembly 7 and the upper mold frame assembly 10 can be quickly aligned. Furthermore, since the groove 704 and the protrusion 1003 are located on the same vertical horizontal line, during the mold closing process, the protrusion 1003 is embedded in the groove 704, further enhancing the positioning accuracy of the mold frame assembly. At the same time, during stamping, the protrusion 1003 can remove the metal from the surface of the lead frame body 16, enabling normal operation.

[0034] Specifically, a positioning bolt 2 1005 is provided on the outer surface of the mold body 2 1001. Positioning bolt 1 702 penetrates the mold body 1 701 and extends to the inner surface of the lower mold base 2. Positioning bolt 2 1005 penetrates the mold body 2 1001 and extends to the inner surface of the upper mold base 8. The advantage is that, through the design of positioning bolt 1 702 and positioning bolt 2 1005, the mold body 1 701 and the mold body 2 1001 can be replaced. The order of the mold body 1 701 and the mold body 2 1001 can be adjusted according to the actual working conditions, thereby adjusting the different working modes of the progressive die.

[0035] Specifically, a limiting block 4 is fixedly installed at one end of the lower mold base 2, and a limiting post 5 is provided on the outer surface of the limiting block 4. A limiting block 11 is fixedly installed at one end of the upper mold base 8, and a limiting post 12 is provided on the outer surface of the limiting block 11. The limiting blocks 4 and 5 correspond one-to-one with the limiting blocks 11 and 12. The advantage is that, through the one-to-one correspondence between the limiting blocks 4 and 5 and the limiting blocks 11 and 12, the limiting posts 5 and 12 cooperate with each other during the mold opening and closing process, which can limit the relative position of the upper mold base 8 and the lower mold base 2, and prevent the upper mold base 8 from shifting or shaking during stamping.

[0036] Example 2: Figure 2-5 As shown, this is an improvement on the previous embodiment.

[0037] Specifically, the positioning pin 3 and the sleeve 13 are installed by insertion. There are four identical positioning pins 3 and sleeves 13 located at the four corners of the lower mold base 2 and the upper mold base 8. The advantage is that, through the cooperation of the positioning pins 3 and the sleeves 13, the positioning pins 3 and the sleeves 13 play a precise positioning role for the upper mold base 8 and the lower mold base 2 during mold installation and use, which further enhances the installation accuracy and stability of the mold base.

[0038] Specifically, the lead frame body 16 is located between the lower die base 2 and the upper die base 8, and the lower die frame assembly 7 and the upper die frame assembly 10 correspond to the lead frame body 16. The advantage is that the lead frame body 16 is placed between the lower die base 2 and the upper die base 8, and the lower die frame assembly 7 and the upper die frame assembly 10 correspond to the lead frame body 16. During the stamping operation, the upper die base 8 moves downward, the upper die frame assembly 10 applies pressure to the lead frame body 16, and the lower die frame assembly 7 provides support and reaction force. The two work together to stamp the lead frame body 16, completing various stamping processes of the lead frame body 16 by the multi-station progressive die.

[0039] Specifically, a fixing frame 14 is fixedly installed at one end of the base 1 near the lower die base 2. The fixing frame 14 has an "L" shaped cross-section. A discharge hopper 15 is fixedly installed at one end of the fixing frame 14 away from the lower die base 2. The other end of the discharge hopper 15 is located on the base 1 away from the lower die frame assembly 7. The advantage is that one end of the "L" shaped fixing frame 14 is fixed at the base 1 near the lower die base 2, and the other end is equipped with the discharge hopper 15. The other end of the discharge hopper 15 is located on the base 1 away from the lower die frame assembly 7. After stamping, the waste or finished product of the lead frame body 16 can be quickly discharged through the discharge hopper 15, avoiding the accumulation of waste around the mold and affecting subsequent processing. It is also convenient to collect and sort waste and finished products.

[0040] Working Principle: During use, the lower mold base 2 is precisely installed on the base 1 through the insertion and engagement of the positioning pin 3 and the sleeve 13. The positioning pin 3 and the sleeve 13 are located at the four corners of the lower mold base 2 and the upper mold base 8, enhancing the installation accuracy and stability. At the same time, the limiting block 4 on the lower mold base 2 and the limiting pin 5 on its outer surface correspond one-to-one with the limiting block 11 on the upper mold base 8 and the limiting pin 12 on its outer surface. During the mold opening and closing process, the limiting pin 5 and the limiting pin 12 cooperate with each other to further restrict the relative position of the upper mold base 8 and the lower mold base 2. The mold body 701 of the lower mold frame assembly 7 is fixed to the lower mold base 2 by the positioning bolt 702, and the mold body 1001 of the upper mold frame assembly 10 is fixed to the upper mold base 8 by the positioning bolt 1005. When the mold is closed, the mold body 701... The locking block 705 on 701 is adapted to the upper mold frame assembly 10, which plays a preliminary positioning role. The groove 704 and the protrusion 1003 are located on the same vertical horizontal line. When the mold is closed, the protrusion 1003 is embedded in the groove 704 to enhance the positioning accuracy. Subsequently, the upper mold base 8 moves downward, and the upper mold frame assembly 10 applies pressure to the lead frame body 16 located between the lower mold base 2 and the upper mold base 8. The lower mold frame assembly 7 provides support and reaction force. The two work together to complete the stamping process of the lead frame body 16, realizing various stamping processes of multi-station progressive dies. After stamping, the waste or finished product of the lead frame body 16 is quickly discharged through the discharge hopper 15 installed at one end of the "L"-shaped fixing frame 14 on the base 1. The other end of the discharge hopper 15 is located on the base 1 away from the lower mold frame assembly 7.

[0041] 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 multi-station progressive die for a lead frame, comprising a base (1), a lower die holder (2), an upper die holder (8), and a lead frame body (16), characterized in that: The lower mold base (2) is fixedly installed with a positioning post (3), a limiting cylinder (6) and a lower mold frame assembly (7) at one end away from the base (1). The upper mold base (8) is provided with a through groove (9) at one end away from the lower mold base (2). The upper mold base (8) is fixedly installed with an upper mold frame assembly (10) at one end away from the lower mold base (2). The lower mold frame assembly (7) includes a mold body (701), a positioning bolt (702) is threadedly connected to the outer surface of the mold body (701), and the outer surface of the mold body (701) is provided with a slanted groove (703), a groove (704) and a slot (706); The upper mold frame assembly (10) includes a second mold body (1001), on the outer surface of the second mold body (1001) are fixedly installed a pin (1002), a protrusion (1003) and a protrusion (1004), and a fixing bolt (1006) is provided on the outer surface of the second mold body (1001). The lower mold frame assembly (7) and the upper mold frame assembly (10) are in one-to-one correspondence.

2. The multi-station progressive die for a lead frame according to claim 1, characterized in that: A locking block (705) is fixedly installed at one end of the mold body (701) near the upper mold frame assembly (10). The locking block (705) is adapted to the upper mold frame assembly (10). The groove (704) and the protrusion (1003) are located on the same vertical horizontal line.

3. A multi-station progressive die for a lead frame according to claim 1, characterized in that: The outer surface of the second mold body (1001) is provided with a second positioning bolt (1005), the first positioning bolt (702) penetrates the first mold body (701) and extends to the inner surface of the lower mold base (2), and the second positioning bolt (1005) penetrates the second mold body (1001) and extends to the inner surface of the upper mold base (8).

4. A multi-station progressive die for a lead frame according to claim 1, characterized in that: One end of the lower mold base (2) is fixedly installed with a limiting block 1 (4), and the outer surface of the limiting block 1 (4) is provided with a limiting post 1 (5). One end of the upper mold base (8) is fixedly installed with a limiting block 2 (11), and the outer surface of the limiting block 2 (11) is provided with a limiting post 2 (12). The limiting block 1 (4) and the limiting post 1 (5) correspond one-to-one with the limiting block 2 (11) and the limiting post 2 (12).

5. A multi-station progressive die for a lead frame according to claim 1, characterized in that: The positioning pin (3) and the sleeve (13) are installed by insertion. There are four identical positioning pins (3) and sleeves (13) located at the four corners of the lower mold base (2) and the upper mold base (8).

6. A multi-station progressive die for a lead frame according to claim 1, characterized in that: The lead frame body (16) is located between the lower mold base (2) and the upper mold base (8), and the lower mold frame assembly (7) and the upper mold frame assembly (10) correspond to the lead frame body (16).

7. A multi-station progressive die for a lead frame according to claim 1, characterized in that: A fixing frame (14) is fixedly installed at one end of the base (1) near the lower mold base (2). The fixing frame (14) has an "L" shaped cross section. A discharge hopper (15) is fixedly installed at one end of the fixing frame (14) away from the lower mold base (2). The other end of the discharge hopper (15) is located on the base (1) away from the lower mold frame assembly (7).

Images