A shell cold stamping device for filter production
By designing a cold stamping device for filter production that operates synchronously with multiple hydraulic cylinders and pneumatic cylinders, multiple sheet metal parts can be formed simultaneously, solving the problem that only one sheet metal part can be formed at a time in the existing technology, thus improving production efficiency and mold adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG MORKA FILTRATION TECH CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-24
AI Technical Summary
The existing cold stamping equipment used in filter production can only complete the forming of one sheet metal part at a time, which is time-consuming and inefficient.
A cold stamping device including a worktable, a lower die, and an upper die was designed. By using the synchronous operation of multiple hydraulic cylinders and air cylinders, multiple sheet metal parts can be formed simultaneously. Through the cooperation of multiple protrusions and pressure grooves, multiple sheet metal parts can be stamped in one go. The device maintains stability through guide pillars, guide sleeves, and linear bearings, and facilitates the installation and replacement of the mold.
It enables the simultaneous forming of multiple sheet metal parts, saving time and manpower, improving work efficiency, and adapting to different size processing needs through quick mold installation and replacement.
Smart Images

Figure CN224542828U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filter manufacturing and processing technology, and in particular to a cold stamping device for filter housings. Background Technology
[0002] A filter is an accessory that uses filter paper to filter impurities or gases. Based on different filtration functions, they are classified into oil filters, fuel filters, air filters, and cabin air filters, etc. Utility model patent application number CN202220580183.9 discloses a cold stamping device for processing filter housings, including a base plate. A lower stamping die and a connecting rod are fixedly connected to the upper end of the base plate. A hydraulic rod is fixedly connected to one end of the connecting rod, and an upper stamping die is fixedly connected to the output end of the hydraulic rod. An L-shaped push rod is fixedly connected to the outer circumference of the hydraulic rod. A groove is formed in the inner wall of the lower stamping die, and a connecting block is embedded in the inner cavity of the groove. A first spring is fixedly connected to the upper end of the connecting block, and a first push rod is fixedly connected to the upper end of the first spring. The inner cavity of the upper stamping die has a through hole and a compression cavity, which are connected. The through hole has a second push rod slidably connected to its inner cavity. A connecting block is fixedly connected to the outer circumference of the second push rod, and a second spring is fixedly connected to the lower end of the connecting block. The lower end of the second spring is fixedly connected to the inner bottom end of the extrusion cavity. A first magnet is fixedly connected to the inner bottom end of the groove, and a second magnet is fixedly connected to the lower end of the connecting block. The first and second magnets attract each other. An elastic layer made of rubber is fixedly connected to the upper end of the first push rod and the lower end of the second push rod. The lower end of the L-shaped push rod is located directly above the through hole. When the first spring is compressed, the height at which it engages with the first push rod is less than the depth of the groove. However, each stamping operation can only complete the forming of one sheet metal part, which is time-consuming and inefficient. Utility Model Content
[0003] This utility model aims to solve the problems existing in the prior art by providing a cold stamping device for filter production housing, which can complete the forming of multiple sheet metal parts in one stamping. It is simple to operate and easy to use, saving time and manpower and improving work efficiency.
[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: This cold stamping device for filter production includes a worktable, a lower die, and an upper die. The lower die is installed on the top of the worktable. The upper die has multiple pressure grooves on its top. A frame is fixedly connected to the top of the worktable. A hydraulic cylinder is installed on the top of the frame. A piston rod is installed at the bottom output end of the hydraulic cylinder. A connecting block is installed at the bottom of the piston rod. A lifting platform is installed at the bottom of the connecting block. The upper die is installed at the bottom of the lifting platform and is directly above the lower die. Multiple protrusions are fixedly connected to the bottom of the upper die, and these protrusions correspond to multiple pressure grooves. A support block is fixedly connected inside the frame. An upper push rod is fixedly connected to the bottom of the support block. A first inner hole is opened inside the lifting platform. A second inner hole is opened inside the upper die. A third inner hole is opened inside the protrusions. The upper push rods are located inside the first, second, and third inner holes. Multiple upper push rods are located inside the first, second, and third inner holes. An inner groove is opened on the front side of the worktable. A cylinder is installed inside the inner groove. A piston rod and a connecting block are installed on the top of the cylinder. A movable plate is installed on the top of the connecting block. A lower ejector rod is fixedly connected to the top of the moving plate. A fourth inner hole is opened on the top of the worktable, and a fifth inner hole is opened inside the lower mold. The fifth inner hole is connected to the pressure groove. There are multiple lower ejector rods inside the fourth and fifth inner holes. Multiple sheet metal materials are placed on top of multiple pressure grooves. When the hydraulic cylinder is activated, the piston rod extends downward, and the lifting platform and upper mold move downward. Multiple protrusions act on multiple sheet metal materials, and the sheet metal materials are pressed and formed under the action of the pressure groove and protrusions. Then the piston rod retracts back to its original position, driving the lifting platform. As the upper die moves upward, the upper ejector rod reaches the bottom of the protrusion, and the sheet metal parts attached to the protrusion are ejected. Then, the cylinder operates, and the piston rod of the cylinder drives the movable plate to move upward. The lower ejector rod reaches the inside of the pressure groove, and the sheet metal parts attached to the pressure groove are ejected. The operator picks up multiple formed sheet metal parts. Then, the movable plate and the lower ejector rod return to their original positions, and the next set of sheet metal raw materials is prepared for setting and processing. The entire process completes the forming of multiple sheet metal parts in one stamping. It is simple to operate and easy to use, saving time and manpower and improving work efficiency.
[0005] To further improve the system, there are multiple hydraulic cylinders and multiple air cylinders. The multiple hydraulic cylinders operate synchronously, and the multiple air cylinders operate synchronously. The multiple hydraulic cylinders and multiple air cylinders enhance the power effect. The multiple hydraulic cylinders are evenly distributed to maintain the stability of the lifting platform, and the multiple air cylinders are evenly distributed to maintain the stability of the movable plate.
[0006] To further improve the design, the lower mold side is provided with rounded corners, the upper mold and the lifting platform side are also provided with rounded corners, and the pressing groove side is provided with chamfers. The rounded corners and chamfers reduce the sharp right-angle edges of the structure, increase protection and improve safety.
[0007] In a further improvement, a guide column is fixedly connected to the top of the lifting platform, and a guide sleeve is provided on the top of the frame. The guide column moves inside the guide sleeve. There are multiple guide columns and guide sleeves. The multiple guide columns and multiple guide sleeves interact with each other, which further stabilizes the lifting platform and the upper mold during the up and down movement process and avoids positional deviation.
[0008] Further improvements include the fixed connection of an optical axis inside the inner groove, and the installation of a linear bearing inside the movable plate. The optical axis is located inside the linear bearing, and there are multiple optical axes and linear bearings. The interaction between the multiple linear bearings and the multiple optical axes further stabilizes the movement of the movable plate up and down, reducing the mutual influence between the lower push rod and other structures.
[0009] Further improvements include a first mounting hole inside the lower mold, a first threaded groove on the top of the worktable, a first bolt inside the first mounting hole, and a threaded connection between the first bolt and the first threaded groove. There are multiple first mounting holes, first threaded grooves, and first bolts. The lower mold can be quickly installed using the first mounting holes, first threaded grooves, and first bolts. The lower mold is easy to disassemble, replace, and adjust, meeting the processing needs of sheet metal parts of different sizes.
[0010] Further improvements include a second mounting hole inside the upper mold and a second threaded groove at the bottom of the lifting platform. A second bolt is installed inside the second mounting hole, and the second bolt is threadedly connected to the second threaded groove. There are multiple second mounting holes, second threaded grooves, and second bolts. The upper mold can be quickly installed using the second mounting holes, second threaded grooves, and second bolts. The upper mold is easy to install, remove, replace, and adjust, and matches the lower mold to meet the processing needs of sheet metal parts of different sizes.
[0011] The beneficial effects of this utility model are: Multiple sheet metal blanks are placed on top of multiple pressing grooves. The hydraulic cylinder is activated, the piston rod extends downward, and the lifting platform and upper die move downward. Multiple protrusions act on the multiple sheet metal blanks, and the sheet metal blanks are formed under the pressure of the pressing grooves and protrusions. Then the piston rod retracts back to its original position, driving the lifting platform and upper die to move upward. The upper ejector rod reaches the bottom of the protrusion, and the sheet metal parts attached to the protrusion are ejected. Then the cylinder is activated, and the piston rod of the cylinder drives the movable plate to move upward. The lower ejector rod reaches the inside of the pressing groove, and the sheet metal parts attached to the pressing groove are ejected. The operator picks up multiple formed sheet metal parts. Then the movable plate and lower ejector rod return to their original positions, and the next set of sheet metal blanks is prepared for setting and processing. The entire process completes the forming of multiple sheet metal parts in one stamping. It is simple to operate and easy to use, saving time and manpower and improving work efficiency.
[0012] Through the interaction of multiple guide pillars and multiple guide sleeves, the lifting platform and upper mold move up and down, further stabilizing the process and preventing positional deviation. The interaction of multiple linear bearings and multiple optical axes further stabilizes the movement of the movable plate, reducing the mutual influence between the lower ejector rod and other structures.
[0013] The lower mold is quickly installed using the first mounting hole, the first threaded groove, and the first bolt. The lower mold is easy to remove, replace, and adjust, meeting the processing needs of sheet metal parts of different sizes. The upper mold is quickly installed using the second mounting hole, the second threaded groove, and the second bolt. The upper mold is easy to install, remove, replace, and adjust, matching the lower mold to meet the processing needs of sheet metal parts of different sizes. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is an internal sectional view of the lower mold of this utility model; Figure 4 This is a diagram showing the installation of the lower mold of this utility model; Figure 5 For the present utility model Figure 1 Enlarged view at point B in the middle; Figure 6 This is a cross-sectional view of the upper mold of this utility model; Figure 7 This is a diagram showing the installation of the upper mold of this utility model; Figure 8 This is a front view of the structure of this utility model.
[0015] Explanation of reference numerals in the attached drawings: 1. Worktable; 2. Lower mold; 3. Upper mold; 4. Pressing groove; 5. Frame; 6. Hydraulic cylinder; 7. Piston rod; 8. Connecting block; 9. Lifting platform; 10. Protrusion; 11. Support block; 12. Upper ejector rod; 13. First inner hole; 14. Second inner hole; 15. Third inner hole; 16. Inner groove; 17. Cylinder; 18. Movable plate; 19. Lower ejector rod; 20. Fourth inner hole; 21. Fifth inner hole; 22. Rounded corner; 23. Chamfer; 24. Guide post; 25. Guide sleeve; 26. Optical axis; 27. Linear bearing; 28. First mounting hole; 29. First threaded groove; 30. First bolt; 31. Second mounting hole; 32. Second threaded groove; 33. Second bolt. Detailed Implementation
[0016] The following is in conjunction with the appendix Figure 1-8 Further explanation of this embodiment: like Figure 1-8As shown: This embodiment discloses a cold stamping device for filter production housings, including a worktable 1, a lower die 2, and an upper die 3. The lower die 2 is installed on the top of the worktable 1. The upper die 3 has multiple pressure grooves 4 on its top. A frame 5 is fixedly connected to the top of the worktable 1. A hydraulic cylinder 6 is installed on the top of the frame 5. A piston rod 7 is installed at the bottom output end of the hydraulic cylinder 6. A connecting block 8 is installed at the bottom of the piston rod 7. A lifting platform 9 is installed at the bottom of the connecting block 8. The upper die 3 is installed at the bottom of the lifting platform 9, directly above the lower die 2. Multiple protrusions 10 are fixedly connected to the bottom of the upper die 3, and the multiple protrusions 10 correspond to the multiple pressure grooves 4. A support block 11 is fixedly connected inside the frame 5. An upper push rod 12 is fixedly connected to the bottom of the support block 11. A first inner hole 13 is opened inside the lifting platform 9. A second inner hole 14 is opened inside the upper die 3. The protrusions 10 have internal openings... There is a third inner hole 15. The upper ejector rod 12 is inside the first inner hole 13, the second inner hole 14 and the third inner hole 15. There are multiple upper ejector rods 12. The front side of the worktable 1 has an inner groove 16. The inner groove 16 is equipped with a cylinder 17. The top of the cylinder 17 is equipped with a piston rod 7 and a connecting block 8. The top of the connecting block 8 is equipped with a movable plate 18. The top of the movable plate 18 is fixedly connected to a lower ejector rod 19. The top of the worktable 1 has a fourth inner hole 20. The lower mold 2 has a fifth inner hole 21. The fifth inner hole 21 is connected to the pressure groove 4. The lower ejector rod 19 is inside the fourth inner hole 20 and the fifth inner hole 21. There are multiple lower ejector rods 19. There are multiple hydraulic cylinders 6 and multiple air cylinders 17. Multiple hydraulic cylinders 6 operate synchronously. Multiple air cylinders 17 operate synchronously. The side of the lower mold 2 is equipped with a rounded corner 22. The side of the upper mold 3 and the lifting platform 9 is also equipped with a rounded corner 22. The side of the pressure groove 4 is equipped with a chamfer 23.
[0017] like Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 8 As shown: The top of the lifting platform 9 is fixedly connected to a guide column 24, the top of the frame 5 is provided with a guide sleeve 25, the guide column 24 moves inside the guide sleeve 25, there are multiple guide columns 24 and guide sleeves 25, the inner groove 16 is fixedly connected to an optical axis 26, the movable plate 18 is provided with a linear bearing 27, the optical axis 26 is inside the linear bearing 27, there are multiple optical axes 26 and linear bearings 27.
[0018] like Figure 2 , Figure 4 and Figure 7As shown: The lower mold 2 has a first mounting hole 28 inside, the top of the worktable 1 has a first threaded groove 29, the first mounting hole 28 has a first bolt 30 inside, the first bolt 30 is threadedly connected to the first threaded groove 29, and there are multiple first mounting holes 28, first threaded grooves 29 and first bolts 30. The upper mold 3 has a second mounting hole 31 inside, the bottom of the lifting platform 9 has a second threaded groove 32, the second mounting hole 31 has a second bolt 33 inside, the second bolt 33 is threadedly connected to the second threaded groove 32, and there are multiple second mounting holes 31, second threaded grooves 32 and second bolts 33.
[0019] In use, this utility model involves: acquiring the lower mold 2 and upper mold 3 required for processing; placing the upper mold 3 at the bottom of the lifting platform 9; interlocking multiple second inner holes 14 with multiple upper push rods 12; corresponding to multiple second mounting holes 31 and multiple second threaded grooves 32; acquiring multiple second bolts 33; connecting the second bolts 33 to the second threaded grooves 32 after passing through the second mounting holes 31; and tightening all the second bolts 33 to install and fix the upper mold 3. The lower mold 2 is placed at the top of the worktable 1; interlocking multiple fifth inner holes 21 with multiple lower push rods 19; corresponding to multiple first mounting holes 28 and multiple first threaded grooves 29; acquiring multiple first bolts 30; connecting the first bolts 30 to the first threaded grooves 29 after passing through the first mounting holes 28; and tightening all the first bolts 30 to install and fix the lower mold 2. Multiple sheet metal materials are placed on top of multiple pressure grooves 4; the hydraulic cylinder 6 is activated, the piston rod 7 extends downward, and the lifting platform 9 and upper mold 3 move downward. Multiple guide pillars... The interaction between the 24 and multiple guide sleeves 25 further stabilizes the lifting platform 9 and the upper mold 3 during their up-and-down movement. Multiple protrusions 10 act on multiple sheet metal materials, which are then pressed and formed under the action of the pressure groove 4 and the protrusions 10. Subsequently, the piston rod 7 retracts and returns to its original position, driving the lifting platform 9 and the upper mold 3 to move upward. The upper ejector rod 12 reaches the bottom of the protrusion 10, and the sheet metal parts attached to the protrusion 10 are ejected. Then, the cylinder 17 operates, and the piston rod 7 of the cylinder 17 drives the movable plate 18 to move upward. Multiple linear bearings 27 interact with multiple optical axes 26, further stabilizing the up-and-down movement of the movable plate 18. The lower ejector rod 19 reaches the inside of the pressure groove 4, and the sheet metal parts attached to the pressure groove 4 are ejected. The operator picks up multiple formed sheet metal parts, and then the movable plate 18 and the lower ejector rod 19 return to their original positions to prepare for the setting and processing of the next set of sheet metal materials. The entire process completes the forming of multiple sheet metal parts in one stamping operation. It is simple and easy to use, saving time and manpower and improving work efficiency.
[0020] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.
Claims
1. A cold stamping device for filter housing production, comprising a worktable (1), a lower die (2), and an upper die (3), characterized in that: The lower mold (2) is installed on the top of the workbench (1). The upper mold (3) has a pressure groove (4) on its top. There are multiple pressure grooves (4). The top of the workbench (1) is fixedly connected to a frame (5). The top of the frame (5) is equipped with a hydraulic cylinder (6). The bottom output end of the hydraulic cylinder (6) is equipped with a piston rod (7). The bottom of the piston rod (7) is equipped with a connecting block (8). The bottom of the connecting block (8) is equipped with a lifting platform (9). The upper mold (3) is installed at the bottom of the lifting platform (9). The upper mold (3) is directly above the lower mold (2). The bottom of the upper mold (3) is fixedly connected with a protrusion (10). There are multiple protrusions (10). Multiple protrusions (10) correspond to multiple pressure grooves (4). The inside of the frame (5) is fixedly connected with a support block (11). The bottom of the support block (11) is fixedly connected with an upper push rod (12). The inside of the lifting platform (9) is equipped with a first inner hole (13). The mold (3) has a second inner hole (14) inside, the protrusion (10) has a third inner hole (15) inside, the upper ejector rod (12) is inside the first inner hole (13), the second inner hole (14) and the third inner hole (15), and there are multiple upper ejector rods (12). The worktable (1) has an inner groove (16) on the front side, and a cylinder (17) is installed inside the inner groove (16). The cylinder (17) has a piston rod (7) and a connecting block (8) on the top of the cylinder (17). The connecting block (8) has a movable plate (18) on the top. The movable plate (18) is fixedly connected to the top of the lower ejector rod (19). The worktable (1) has a fourth inner hole (20) on the top. The lower mold (2) has a fifth inner hole (21) inside, and the fifth inner hole (21) is connected to the pressure groove (4). The lower ejector rod (19) is inside the fourth inner hole (20) and the fifth inner hole (21), and there are multiple lower ejector rods (19).
2. The cold stamping device for filter housing production according to claim 1, characterized in that: There are multiple hydraulic cylinders (6) and multiple air cylinders (17), with multiple hydraulic cylinders (6) operating synchronously and multiple air cylinders (17) operating synchronously.
3. The cold stamping device for filter housing production according to claim 1, characterized in that: The lower mold (2) has rounded corners (22) on its side, the upper mold (3) and the lifting platform (9) also have rounded corners (22) on their sides, and the pressing groove (4) has chamfers (23) on its side.
4. The cold stamping device for filter housing production according to claim 1, characterized in that: The top of the lifting platform (9) is fixedly connected with a guide column (24), and the top of the frame (5) is provided with a guide sleeve (25). The guide column (24) moves inside the guide sleeve (25). There are multiple guide columns (24) and guide sleeves (25).
5. The cold stamping device for filter housing production according to claim 1, characterized in that: The inner groove (16) is fixedly connected to an optical axis (26), and the movable plate (18) is provided with a linear bearing (27). The optical axis (26) is inside the linear bearing (27), and there are multiple optical axes (26) and linear bearings (27).
6. The cold stamping device for filter housing production according to claim 1, characterized in that: The lower mold (2) has a first mounting hole (28) inside, and the worktable (1) has a first threaded groove (29) on the top. A first bolt (30) is provided inside the first mounting hole (28). The first bolt (30) is threadedly connected to the first threaded groove (29). There are multiple first mounting holes (28), first threaded grooves (29) and first bolts (30).
7. A cold stamping device for filter housing production according to claim 1, characterized in that: The upper mold (3) has a second mounting hole (31) inside, and the bottom of the lifting platform (9) has a second threaded groove (32). The second mounting hole (31) is provided with a second bolt (33), and the second bolt (33) is threadedly connected to the second threaded groove (32). There are multiple second mounting holes (31), second threaded grooves (32) and second bolts (33).