A lubricating device for a lead frame mold

Abstract

This utility model relates to the field of stamping die technology and discloses a lubrication device for a lead frame die. It includes a stamping table, a support column fixedly installed at the upper end of the stamping table, a top plate fixedly installed at the other end of the support column away from the stamping table, a lower die, and an upper die. A lower die is fixedly installed at the end of the stamping table near the support column. Fixing sleeves are fixedly installed at the four corners of the lower die away from the stamping table. The lower die is slidably connected to the upper die via connecting columns. Lubrication components are fixedly installed on both the side of the stamping table near the top plate and the side of the top plate away from the stamping table. This lubrication device for a lead frame die uses a lubrication sleeve in conjunction with a distribution pipe to provide continuous lubrication to the upper die and connecting column, reducing friction loss and effectively extending the service life of key die components. Combined with a distribution valve, it distributes lubricating oil as needed, ensuring uniform force on the upper die during stamping, guaranteeing the forming accuracy of the lead frame, and improving product quality.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically to a lubrication device for a lead frame die. Background Technology

[0002] A leadframe is a chip carrier in integrated circuits, typically made of a thin metal sheet. Various perforated holes are formed on the outer side of the leadframe. It is a key structural component that uses bonding materials to electrically connect the internal circuit leads of the chip to external leads, forming an electrical circuit. It acts as a bridge connecting to external wires. Leadframes are required in most semiconductor integrated circuits and are an important basic material in the electronics and information industry. During manufacturing, these holes are generally formed by stamping. This process requires the use of stamping dies. During stamping, the leadframe is located between a die and a punch. Pressurizing equipment moves the die or punch, clamping the leadframe for stamping. Because the upper and lower dies need to move up and down during stamping, lubrication devices are often used to reduce friction and improve service life.

[0003] Chinese Invention Patent Publication No. CN 116727544 A discloses a stamping die for manufacturing lead frames. In this stamping die, the airflow inside the upper die base can flow to the lower die base, thereby accelerating the cleaning efficiency inside the lower die base. After impurities are removed from the lower and upper die bases, the surface of the workpiece is less prone to scratches during the stamping process, further ensuring the integrity of the workpiece during stamping. However, this stamping die for manufacturing lead frames is not easy to lubricate, which can easily lead to wear and tear on the upper and lower dies during long-term operation. Furthermore, due to its high friction, it is prone to damage, making it unsuitable for long-term use and having poor practicality. Summary of the Invention

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

[0005] The technical solution adopted by this utility model is: a lubrication device for a lead frame mold, including a stamping table, a support column fixedly installed on the upper end of the stamping table, a top plate, a lower mold and an upper mold fixedly installed on the other end of the support column away from the stamping table, a lower mold fixedly installed on the end of the stamping table near the support column, fixing sleeves fixedly installed at the four corners of the side of the lower mold away from the stamping table, the upper mold slidably connected to the lower mold through a connecting column, lubrication components fixedly installed on the side of the stamping table near the top plate and the side of the top plate away from the stamping table, and a lubrication sleeve fixedly installed on the end of the upper mold away from the lower mold;

[0006] The lubrication assembly includes an oil inlet pump fixedly installed on the top plate at the end away from the stamping table, a second lubrication branch pipe, and a return pipe communicating with the fixed sleeve.

[0007] Preferably, one end of the oil pump is provided with an oil inlet for oil inlet, and the other end of the oil pump away from the oil inlet is provided with a diverter pipe, and the other end of the diverter pipe away from the oil pump is provided with a distribution valve fixedly installed on the side of the upper die away from the stamping table.

[0008] Through the above technical solution, the oil inlet is responsible for introducing lubricating oil. The oil pump pressurizes the lubricating oil and delivers it to the first distribution pipe. The first distribution pipe then introduces the lubricating oil into the distribution valve. The distribution valve distributes the lubricating oil reasonably according to the needs. The lubricating oil is then delivered to the lubrication sleeve through the second distribution pipe, thereby lubricating the relevant parts of the upper mold.

[0009] Preferably, both ends of the distribution valve are provided with a second diversion pipe communicating with the lubrication sleeve, and the other end of the return pipe away from the fixed sleeve is provided with a collection box fixedly installed with the lower die away from the stamping table. The fixed sleeve has a groove at one end near the center line, and the groove is flush with the return pipe.

[0010] Through the above technical solution, the second diversion pipe delivers lubricating oil to the lubrication sleeve to lubricate the contact area between the connecting column and the upper mold. The used lubricating oil flows along the connecting column into the groove of the fixed sleeve and is collected in the collection box through the return pipe. This realizes the recycling of lubricating oil, avoids waste, maintains the cleanliness of the working environment, and reduces production costs.

[0011] Preferably, a positioning frame is fixedly installed on the outer surface of the collection box by bolts, and two identical positioning frames are provided and are symmetrically distributed about the center line of the collection box.

[0012] Through the above technical solution, two symmetrically distributed positioning frames are used to firmly fix the collection box to the lower mold with bolts. The positioning frames not only enhance the stability of the collection box installation and prevent it from shaking or shifting during equipment operation, thus affecting the collection effect of lubricating oil, but also facilitate the installation and disassembly of the collection box, making it convenient to clean and maintain the collection box.

[0013] Preferably, a retaining ring is provided at the end of the upper mold near the lower mold, and a limiting seat for limiting is provided on the side of the lubrication component away from the upper mold. A retaining bolt that is threadedly connected to the retaining ring is provided at the end of the limiting seat near the center line.

[0014] Through the above technical solution, the fixing bolt and the fixing ring are threaded together to fix the limiting seat on the upper die. The limiting seat can limit the movement range of the upper die and prevent the upper die from moving excessively during the stamping process, which could damage the equipment.

[0015] Preferably, there are two identical fixing rings, fixing bolts, and limiting seats, and the two fixing rings, fixing bolts, and limiting seats are symmetrically distributed about the center line of the stamping table.

[0016] Through the above technical solution, the two symmetrically distributed fixing rings, fixing bolts and limiting seats ensure that the upper die is subjected to uniform force in all directions. On the one hand, this enhances the limiting effect of the limiting seat on the upper die and improves the stability of equipment operation. On the other hand, the symmetrical design facilitates installation and debugging, reduces installation difficulty, improves work efficiency, and ensures the consistency and stability of stamping work.

[0017] Preferably, connecting columns are fixedly installed at the four corners of the side of the lower die away from the stamping table, and the connecting columns are slidably connected to the upper die. A movable cylinder that is fixedly installed with the upper die is fixedly installed on the side of the top plate away from the stamping table. A mold cavity is opened at the center line of the lower die.

[0018] Through the above technical solution, the connecting column realizes the sliding connection between the upper and lower dies. The movable cylinder is fixed between the upper die and the top plate. Through telescopic movement, it drives the upper die to move up and down along the connecting column to realize the stamping operation. The cavity of the lower die is used to place the lead frame material to be stamped. Under the stamping action of the upper and lower dies, the forming work of the lead frame is completed.

[0019] Compared with the prior art, this utility model provides a lubrication device for lead frame molds, which has the following advantages:

[0020] 1. The lubrication device for the lead frame mold, with the lubrication sleeve and the second distribution pipe, provides continuous lubrication to the upper mold and the connecting column, reduces friction loss, effectively extends the service life of key mold components, and, with the upper distribution valve, distributes lubricating oil as needed, so that the upper mold is subjected to uniform force during stamping, ensuring the forming accuracy of the lead frame and improving product quality;

[0021] 2. The lead frame mold uses a lubrication device, which, together with a return pipe and a collection box, can collect excess lubricating oil. The collected lubricating oil can be reused after processing. It is suitable for high-intensity production operations, can save costs, and can be easily promoted and used. 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 three-dimensional structural diagram of the stamping table and lubrication assembly of this utility model;

[0025] Figure 4This is a three-dimensional structural diagram of the lower mold and lubrication assembly of this utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the lubrication component of this utility model. Figure 1 ;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the lubrication component of this utility model. Figure 2 ;

[0028] Figure 7 This is a cross-sectional structural diagram of the present invention.

[0029] The components are as follows: 1. Stamping table; 2. Support column; 3. Top plate; 4. Lower die; 5. Die cavity; 6. Fixing sleeve; 7. Groove; 8. Connecting column; 9. Upper die; 10. Fixing ring; 11. Fixing bolt; 12. Limiting seat; 14. Lubrication assembly; 1401. Oil pump; 1402. Oil inlet; 1403. Diverter pipe one; 1404. Distribution valve; 1405. Diverter pipe two; 1406. Return pipe; 1407. Collection box; 1408. Positioning frame; 15. Movable cylinder; 16. Lubrication sleeve. Detailed Implementation

[0030] 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.

[0031] Example 1: As Figure 1-7 As shown, the present invention provides a lubrication device for a lead frame mold, including a stamping table 1, a support column 2 fixedly installed on the upper end of the stamping table 1, a top plate 3 fixedly installed on the other end of the support column 2 away from the stamping table 1, a lower mold 4 and an upper mold 9, a lower mold 4 fixedly installed on the end of the stamping table 1 near the support column 2, a fixing sleeve 6 fixedly installed at the four corners of the side of the lower mold 4 away from the stamping table 1, an upper mold 9 slidably connected to the lower mold 4 through a connecting column 8, a lubrication assembly 14 fixedly installed on the side of the stamping table 1 near the top plate 3 and the side of the top plate 3 away from the stamping table 1, and a lubrication sleeve 16 fixedly installed on the end of the upper mold 9 away from the lower mold 4;

[0032] The lubrication assembly 14 includes an oil inlet pump 1401 fixedly installed on the top plate 3 at the end away from the stamping table 1, as well as a lubrication distribution pipe 1405 and a return pipe 1406 communicating with the fixed sleeve 6.

[0033] Specifically, one end of the oil pump 1401 is provided with an oil inlet 1402 for oil inlet, and the other end of the oil pump 1401 away from the oil inlet 1402 is provided with a first diversion pipe 1403. The other end of the first diversion pipe 1403 away from the oil pump 1401 is provided with a distribution valve 1404 fixedly installed on the side of the upper mold 9 away from the stamping table 1. The advantage is that the oil inlet 1402 is responsible for introducing lubricating oil, the oil pump 1401 pressurizes the lubricating oil and delivers it to the first diversion pipe 1403, the first diversion pipe 1403 then introduces the lubricating oil into the distribution valve 1404, the distribution valve 1404 reasonably distributes the lubricating oil according to the needs, and delivers the lubricating oil to the lubrication sleeve 16 through the second diversion pipe 1405, thereby lubricating the relevant parts of the upper mold 9.

[0034] Specifically, both ends of the distribution valve 1404 are provided with a second diversion pipe 1405 communicating with the lubrication sleeve 16. The other end of the return pipe 1406 away from the fixed sleeve 6 is provided with a collection box 1407 fixedly installed on the lower die 4 away from the stamping table 1. The fixed sleeve 6 has a groove 7 at one end near the center line, and the groove 7 is flush with the return pipe 1406. The advantage is that the second diversion pipe 1405 delivers lubricating oil to the lubrication sleeve 16 to lubricate the contact part between the connecting column 8 and the upper die 9. The lubricating oil after use flows along the connecting column 8 into the groove 7 of the fixed sleeve 6 and is collected in the collection box 1407 through the return pipe 1406. This realizes the recycling of lubricating oil, avoids waste, maintains the cleanliness of the working environment, and reduces production costs.

[0035] Specifically, a positioning frame 1408 is bolted to the outer surface of the collection box 1407. Two identical positioning frames 1408 are provided and are symmetrically distributed about the center line of the collection box 1407. The advantage is that the two symmetrically distributed positioning frames 1408 firmly fix the collection box 1407 to the lower mold 4 with bolts. The positioning frames 1408 not only enhance the stability of the collection box 1407 installation and prevent it from shaking or shifting during equipment operation, which would affect the lubricating oil collection effect, but also facilitate the installation and disassembly of the collection box 1407, making it convenient for cleaning and maintenance.

[0036] Example 2: Figure 2-7 As shown, this is an improvement on the previous embodiment.

[0037] Specifically, a retaining ring 10 is provided at the end of the upper die 9 near the lower die 4, and a limiting seat 12 for limiting is provided on the side of the lubrication component 14 away from the upper die 9. A fixing bolt 11 that is threadedly connected to the retaining ring 10 is provided at the end of the limiting seat 12 near the center line. The advantage is that the fixing bolt 11 is threadedly connected to the retaining ring 10, which fixes the limiting seat 12 on the upper die 9. The limiting seat 12 can limit the movement range of the upper die 9, preventing the upper die 9 from moving excessively during the stamping process and causing damage to the equipment.

[0038] Specifically, there are two identical fixed rings 10, fixed bolts 11, and limiting seats 12. The two fixed rings 10, fixed bolts 11, and limiting seats 12 are symmetrically distributed about the center line of the stamping table 1. The advantage is that the two symmetrically distributed fixed rings 10, fixed bolts 11, and limiting seats 12 make the upper die 9 uniformly stressed in all directions. On the one hand, it enhances the limiting effect of the limiting seat 12 on the upper die 9 and improves the stability of equipment operation. On the other hand, the symmetrical design facilitates installation and debugging, reduces installation difficulty, improves work efficiency, and ensures the consistency and stability of stamping work.

[0039] Specifically, connecting columns 8 are fixedly installed at the four corners of the side of the lower die 4 away from the stamping table 1. The connecting columns 8 are slidably connected to the upper die 9. The movable cylinder 15, which is fixedly installed to the upper die 9, is fixedly installed on the side of the top plate 3 away from the stamping table 1. A mold cavity 5 is opened at the center line of the lower die 4. The advantage is that the connecting columns 8 realize the slidable connection between the upper die 9 and the lower die 4. The movable cylinder 15 is fixed between the upper die 9 and the top plate 3. Through telescopic movement, the upper die 9 is driven to move up and down along the connecting columns 8 to realize the stamping operation. The mold cavity 5 of the lower die 4 is used to place the lead frame material to be stamped. Under the stamping action of the upper and lower dies, the forming work of the lead frame is completed.

[0040] Working principle: In use, the lubrication assembly 14 is installed on the top of the top plate 3, the lower mold 4, and the upper mold 9 respectively. Then, the lubricating oil enters the oil pump 1401 through the oil inlet 1402, and after being pressurized, it flows into the distribution valve 1404 through the first distribution pipe 1403. The distribution valve 1404 distributes the lubricating oil to the second distribution pipe 1405 and delivers it to the lubrication sleeve 16 to lubricate the contact part between the upper mold 9 and the connecting column 8. The lubricating oil after use flows into the groove 7 of the fixed sleeve 6 along the connecting column 8 and is collected in the collection box 1407 through the return pipe 1406 to realize the recycling of the lubricating oil. The movable cylinder 15 on the top plate 3 moves back and forth, driving the upper mold 9 to move up and down along the connecting column 8. The lead frame material to be stamped is placed in the mold cavity 5 of the lower mold 4. The upper mold 9 stamps downward to complete the forming of the lead frame. During this process, the limit seat 12 is connected to the fixed ring 10 through the fixed bolt 11 to limit the movement range of the upper mold 9 and ensure the accuracy of the stamping operation.

[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 lubrication device for a lead frame mold, comprising a stamping table (1), a support column (2) fixedly mounted on the upper end of the stamping table (1), a top plate (3) fixedly mounted on the other end of the support column (2) away from the stamping table (1), a lower mold (4) and an upper mold (9), characterized in that: The stamping table (1) is fixedly installed with a lower die (4) at one end near the support column (2). The lower die (4) is fixedly installed with a fixing sleeve (6) at the four corners of the side away from the stamping table (1). The lower die (4) is slidably connected to an upper die (9) through a connecting column (8). The stamping table (1) is fixedly installed with a lubrication assembly (14) on the side near the top plate (3) and the top plate (3) is fixedly installed with a lubrication sleeve (16) at the end of the upper die (9) away from the lower die (4). The lubrication assembly (14) includes an oil inlet pump (1401) fixedly installed on the top plate (3) at the end away from the stamping table (1), a second lubrication branch pipe (1405), and a return pipe (1406) communicating with the fixed sleeve (6).

2. A lubricating device for a lead frame mold according to claim 1, wherein: One end of the oil pump (1401) is provided with an oil inlet (1402) for oil inlet, and the other end of the oil pump (1401) away from the oil inlet (1402) is provided with a flow divider (1403). The other end of the flow divider (1403) away from the oil pump (1401) is provided with a distribution valve (1404) fixedly installed on the side of the upper mold (9) away from the stamping table (1).

3. A lubricating device for a lead frame mold according to claim 2, wherein: Both ends of the distribution valve (1404) are provided with a second diversion pipe (1405) communicating with the lubrication sleeve (16). The other end of the return pipe (1406) away from the fixed sleeve (6) is provided with a collection box (1407) fixedly installed on the lower die (4) away from the stamping table (1). The fixed sleeve (6) has a groove (7) at one end near the center line, and the groove (7) is flush with the return pipe (1406).

4. A lubricating device for a lead frame mold according to claim 3, wherein: The outer surface of the collection box (1407) is fixedly mounted with a positioning frame (1408) by bolts. There are two identical positioning frames (1408) and they are symmetrically distributed about the center line of the collection box (1407).

5. The lubricating device for a lead frame mold according to claim 1, wherein: The upper mold (9) is provided with a fixing ring (10) at one end near the lower mold (4), and the lubrication component (14) is provided with a limiting seat (12) for limiting on the side away from the upper mold (9). The limiting seat (12) is provided with a fixing bolt (11) that is threadedly connected to the fixing ring (10) at one end near the center line.

6. A lubricating device for a lead frame mold according to claim 5, wherein: Two identical fixing rings (10), fixing bolts (11), and limiting seats (12) are provided, and the two fixing rings (10), fixing bolts (11), and limiting seats (12) are symmetrically distributed about the center line of the stamping table (1).

7. The lubricating device for a lead frame mold according to claim 1, wherein: Connecting columns (8) are fixedly installed at the four corners of the side of the lower die (4) away from the stamping table (1). The connecting columns (8) are slidably connected to the upper die (9). A movable cylinder (15) is fixedly installed on the side of the top plate (3) away from the stamping table (1) and is fixedly installed to the upper die (9). A mold cavity (5) is opened at the center line of the lower die (4).

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