Ejection structure of stamping die

Abstract

The utility model relates to the technical field of stamping dies, in particular to a stamping die ejection structure which comprises an upper die base and an ejection assembly, the ejection assembly comprises a punch, a connecting plate and an ejection driving cylinder, the connecting plate is slidably connected to the upper die base, the sliding direction of the connecting plate is vertical, the ejection driving cylinder is connected to the upper die base, and the ejection driving cylinder is used for driving the connecting plate to slide. One ends of the punches are connected to the connecting plate, and the punches are evenly distributed on the connecting plate. The connecting plate is pushed to slide through the ejection driving cylinder, the multiple punches are driven to slide, multiple tooth grooves are machined at the same time, the production efficiency of equipment is improved, the possibility that workpieces deviate in the multi-step punching process is reduced, and the machining precision of the equipment is improved.

Description

Technical Field

[0001] This application relates to the technical field of stamping dies, and in particular to an ejection structure for stamping dies. Background Technology

[0002] The mold and die industry is one of the important basic industries of the national economy. Molds are basic process equipment in industrial production, a high-value-added, high-precision integrated product, and an important field for the industrialization of high technology. The level of its technology has become an important indicator for measuring the level of a country's manufacturing industry.

[0003] Traditional stamping dies have a die cavity on the lower die set and a punch on the upper die set. A set of dies is used to process the product according to the shapes of the die cavity and punch. When stamping the tooth grooves of motor stator and rotor laminations, it is impossible to process the tooth grooves in one go. Multiple stamping processes are required to complete the processing of the stator and rotor laminations. This not only results in low production efficiency, but also makes it easy for misalignment to occur during multiple stamping processes, affecting the processing accuracy. Utility Model Content

[0004] In order to improve the processing accuracy and production efficiency of the equipment, this application provides a stamping die ejection structure.

[0005] The ejection structure of a stamping die provided in this application adopts the following technical solution:

[0006] An ejection structure for a stamping die includes an upper die base and an ejection assembly. The ejection assembly includes a punch, a connecting plate, and an ejection drive cylinder. The connecting plate is slidably connected to the upper die base, and the sliding direction of the connecting plate is vertical. The ejection drive cylinder is connected to the upper die base and is used to drive the connecting plate to slide. One end of the punch is connected to the connecting plate, and a plurality of punches are provided, which are evenly distributed on the connecting plate.

[0007] By adopting the above technical solution, the connecting plate is pushed to slide by the ejector drive cylinder, which in turn drives multiple punches to slide, thereby simultaneously processing multiple tooth grooves, improving the production efficiency of the equipment, reducing the possibility of workpiece displacement during multi-step stamping, and improving the processing accuracy of the equipment.

[0008] Preferably, there are several ejector components, and the ejector components are evenly distributed on the upper mold base.

[0009] By adopting the above technical solution, multiple ejection components are provided, which can process multiple stator and rotor laminations simultaneously, shortening the workpiece processing time and improving the production efficiency of the equipment.

[0010] Preferably, the ejection assembly further includes a slide plate, which is slidably connected to the upper mold base. The sliding direction of the slide plate is horizontal. The ejection drive cylinder is used to drive the slide plate to slide. The slide plate has a groove on the side near the connecting plate. The connecting plate has a protrusion on the side near the slide plate. The protrusion is used to be embedded in the groove. The groove has a first chamfer on the side along the sliding direction of the slide plate. The first chamfer is used to abut against the protrusion.

[0011] By adopting the above technical solution, the ejector drive cylinder pushes the slider to slide, the first chamfer abuts against the protrusion, and drives the protrusion to slide in the vertical direction, which in turn drives the punch to slide, realizing the processing of multiple workpieces. The sliding distance of the connecting block is controlled by the groove depth, thereby controlling the processing distance of the punch and improving the accuracy of the equipment processing.

[0012] Preferably, there are several grooves, which are distributed at intervals along the sliding direction of the slide plate, and the number of protrusions is the same as the number of grooves and corresponds one-to-one.

[0013] By adopting the above technical solution, the slide plate is provided with multiple grooves, and the number of protrusions is the same as the number of grooves and corresponds one-to-one. This improves the stability of the connection between the slide plate and the connecting plate, enhances the reliability of the equipment, reduces stress concentration in individual groove walls and protrusion components, and extends the service life of the equipment.

[0014] Preferably, the protrusion has a second chamfer at one end near the bottom of the groove. The second chamfer is located on the side of the protrusion near the first chamfer and is used to abut against the first chamfer.

[0015] By adopting the above technical solution, a second chamfer is set, which abuts against the first chamfer, increasing the contact area between the protrusion and the groove wall, reducing stress concentration at the abutment point of the protrusion and the groove wall, reducing the possibility of damage to the groove wall or the protrusion, and improving the service life of the equipment.

[0016] Preferably, the upper mold base is provided with a sliding groove, the sliding plate is slidably embedded in the sliding groove, and the side wall of the sliding plate is in contact with the groove wall.

[0017] By adopting the above technical solution, the slide plate is slidably embedded in the groove, and the side wall of the slide plate fits against the groove wall, which guides the sliding of the slide plate, improves the accuracy of the slide plate sliding, and improves the processing precision of the equipment.

[0018] Preferably, one end of the slide groove along the sliding direction of the slide plate passes through the upper mold base, the ejection drive cylinder is connected to the side wall of the upper mold base, and the piston rod of the ejection drive cylinder extends into the slide groove.

[0019] By adopting the above technical solution, the ejector drive cylinder is connected to the outside of the upper mold base, which facilitates the maintenance and replacement of the ejector drive cylinder.

[0020] Preferably, it also includes a mounting base, which is connected to the upper mold base. The mounting base has a receiving groove on the side near the upper mold base. The receiving groove is connected to the sliding groove. The connecting plate is slidably embedded in the receiving groove. The side wall of the connecting plate is in contact with the groove wall of the receiving groove. The bottom of the receiving groove has a connecting groove. The number of connecting grooves is the same as the number of punches and corresponds one-to-one. The punch extends out of the mounting base after passing through the connecting groove. The side wall of the punch is in contact with the groove wall of the connecting groove.

[0021] By adopting the above technical solution, the receiving groove and the connecting groove guide the sliding of the connecting plate and the punch, thereby improving the stability and accuracy of punch processing and improving the processing precision of the equipment.

[0022] Preferably, the mounting base includes a lower mounting plate, an upper mounting plate, and pads. The lower mounting plate is connected to the upper die base. The lower mounting plate has a plurality of first mounting holes, which are spaced apart circumferentially along the lower mounting plate. The first mounting holes are used for bolts to pass through and be threadedly connected to the upper die base. The upper mounting plate is connected to the side of the lower mounting plate away from the upper die base. The number of pads is the same as the number of punches and corresponds one-to-one. The pads are connected to the side of the upper mounting plate away from the lower mounting plate. The pads have third mounting holes. The upper mounting plate has second mounting holes, which are the same as the number of third mounting holes and correspond one-to-one. The third mounting holes and second mounting holes are used for bolts to pass through sequentially and be threadedly connected to the lower mounting plate.

[0023] By adopting the above technical solution, the mounting base consists of a lower mounting plate, an upper mounting plate, and a pad, which facilitates the inspection and replacement of the mounting base and connecting block, and improves the service life of the equipment.

[0024] Preferably, the upper mounting plate has a positioning groove on the side away from the lower mounting plate, and the wall of the positioning groove has rounded corners.

[0025] By adopting the above technical solution, the positioning groove is used to cooperate with the positioning block on the lower die base. The rounded corners guide the positioning block, making it easier for the positioning block to be embedded in the positioning groove, reducing the possibility of the upper die base and the lower die base sliding against each other during punch processing, and improving the processing accuracy of the equipment.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By pushing the connecting plate to slide through the ejector drive cylinder, multiple punches can be moved to slide, thereby simultaneously processing multiple tooth grooves, improving the production efficiency of the equipment, reducing the possibility of workpiece displacement during multi-step stamping, and improving the processing accuracy of the equipment;

[0028] 2. The ejector drive cylinder pushes the slider to slide, the first chamfer abuts against the protrusion, causing the protrusion to slide in the vertical direction, which in turn drives the punch to slide, realizing the processing of multiple workpieces. The sliding distance of the connecting block is controlled by the groove depth, thereby controlling the processing distance of the punch and improving the accuracy of the equipment processing.

[0029] 3. The slide plate is slidably embedded in the groove, and the side wall of the slide plate fits against the groove wall, which guides the sliding of the slide plate and improves the accuracy of the slide plate sliding. The receiving groove and the connecting groove guide the sliding of the connecting plate and the punch, improve the stability and accuracy of punch processing, and improve the processing accuracy of the equipment. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the ejection structure of a stamping die.

[0031] Figure 2 It is a partial sectional view of the upper mold base, ejector assembly, and mounting base.

[0032] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0033] Figure 4 This is a partial exploded structural diagram of the upper mold base, ejection assembly, and mounting base.

[0034] Figure 5 yes Figure 2 Enlarged view of point B in the middle.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Upper mold base; 11. Slide groove; 12. Guide post; 2. Ejection assembly; 21. Punch; 22. Ejection drive cylinder; 221. Limiting ring; 23. Slide plate; 231. Groove; 232. First chamfer; 233. Limiting groove; 24. Connecting plate; 241. Protrusion; 2411. Second chamfer; 25. Fixing plate; 3. Mounting base; 31. Lower mounting plate; 311. Receiving groove; 312. First mounting hole; 313. Embedded groove; 32. Upper mounting plate; 321. Positioning groove; 322. Rounded corner; 323. Second mounting hole; 33. Pad; 331. Third mounting hole; 34. Connecting groove; 4. Lower mold base; 41. Guide groove. Detailed Implementation

[0037] The present application will be further described in detail below with reference to the accompanying drawings.

[0038] Reference Figure 1This application discloses a stamping die ejection structure including an upper die base 1 and a lower die base 4. The upper die base 1 is slidably connected to the lower die base 4, and the sliding direction of the upper die base 1 is parallel to its sliding direction. A guide post 12 is fixedly connected to the side of the upper die base 1 near the lower die base, and the length direction of the guide post 12 is parallel to the sliding direction of the upper die base 1. Several guide posts 12 are provided, and the several guide posts 12 are divided into two groups. The two groups of guide posts 12 are symmetrically distributed along the width direction of the upper die base 1, and the several guide posts 12 in the same group are spaced apart along the length direction of the upper die base 1. In this embodiment, there are six guide posts 12. The lower die base 4 is provided with guide grooves 41, the number of guide grooves 41 is the same as the number of guide posts 12 and corresponds one-to-one, and the guide grooves 41 are used for the guide posts 12 to be embedded.

[0039] Reference Figure 1 and Figure 2 An ejection structure for a stamping die further includes an ejection assembly 2, of which several ejection assemblies 2 are evenly distributed on one side of the upper die holder 1 along its sliding direction. In this embodiment, three ejection assemblies 2 are provided. The ejection assembly 2 includes an ejection drive cylinder 22, a fixing plate 25, and a sliding plate 23. A groove 11 is provided on the side of the upper die holder 1 near the lower die holder 4, and one end of the groove 11 extends through the upper die holder 1 along its length. The sliding plate 23 is slidably embedded in the groove 11, and the sliding direction of the sliding plate 23 is parallel to the length direction of the upper die holder 1. The side wall of the sliding plate 23 is in contact with the groove wall of the groove 11, and the surface of the sliding plate 23 away from the bottom of the groove 11 is flush with the surface of the upper die holder 1 near the lower die holder 4. The fixing plate 25 is fixedly connected to the side wall of the upper die holder 1, and the ejection drive cylinder 22 is connected to the fixing plate 25. The ejection drive cylinder 22 is used to drive the sliding plate 23 to slide. In this embodiment, the ejection drive cylinder 22 is a pneumatic cylinder. The cylinder body of the ejection drive cylinder 22 is fixedly connected to the side surface of the fixed plate 25 away from the upper mold base 1. The piston rod of the ejection drive cylinder 22 passes through the fixed plate 25 and extends into the slide groove 11.

[0040] Reference Figure 2 and Figure 3 A limiting groove 233 is provided at one end of the slide plate 23 near the fixed plate 25. The limiting groove 233 extends through the slide plate 23 along the sliding direction of the upper mold base 1, and the cross section of the limiting groove 233 along the sliding direction of the upper mold base 1 is T-shaped. The piston rod of the ejector drive cylinder 22 extends into the limiting groove 233. A limiting ring 221 is fixedly connected to the outer periphery of the piston rod of the ejector drive cylinder 22 near the slide plate 23. The limiting ring 221 is embedded in the limiting groove 233 to achieve relative fixation between the piston rod of the ejector drive cylinder 22 and the slide plate 23 along the sliding direction of the slide plate 23.

[0041] Reference Figure 3 and Figure 4A stamping die ejection structure also includes mounting bases 3, the number of which is the same as the number of ejection components 2 and corresponds one-to-one. The mounting base 3 includes a lower mounting plate 31, an upper mounting plate 32, and a pad 33. The lower mounting plate 31 is fixedly connected to the side of the upper die base 1 near the lower die base 4. The lower mounting plate 31 has several first mounting holes 312, which are used for bolts to pass through and be threaded to the upper die base 1. The several first mounting holes 312 are spaced apart circumferentially along the mounting plate. In this embodiment, there are four first mounting holes 312, distributed at the four corners of the lower mounting plate 31. A groove 313 is coaxially provided on the hole wall of the first mounting hole 312 at the end away from the upper die base 1, for the head of the bolt to be inserted. The upper mounting plate 32 is fixedly connected to the side of the lower mounting plate 31 away from the upper die base 1, and the side wall of the upper mounting plate 32 is flush with the side wall of the lower mounting plate 31. A pad 33 is fixedly connected to the surface of the upper mounting plate 32 away from the lower mounting plate 31. The cross-section of the pad 33 along the sliding direction of the upper mold base 1 is fan-shaped. Several pads 33 are provided, and the pads 33 are divided into two groups. The distances from the axis of the pads 33 in the same group to the center of the upper mounting plate 32 are equal, while the distances from the axis of the pads 33 in the two groups to the center of the upper mounting plate 32 are not equal. The pad 33 is provided with a third mounting hole 331, and the upper mounting plate 32 is provided with a second mounting hole 323. The number of second mounting holes 323 is the same as the number of third mounting holes 331 and they correspond one-to-one. The third mounting holes 331 and the second mounting holes 323 are used for bolts to pass through and be threaded to the lower mounting plate 31.

[0042] Reference Figure 2 and Figure 5 The upper mounting plate 32 has several positioning grooves 321 on the side away from the lower mounting plate 31, and the groove walls of the positioning grooves 321 have rounded corners 322. In this embodiment, there are five positioning grooves 321, one of which has its axis coincident with the center of the upper mounting plate 32, and the other four positioning grooves 321 are distributed at the four corners of the upper mounting plate 32.

[0043] The ejector assembly 2 also includes a connecting plate 24 and a punch 21. The lower mounting plate 31 has a receiving groove 311 on the side near the upper mold base 1, which communicates with the slide groove 11. The connecting plate 24 is slidably embedded in the receiving groove 311, with the sliding direction of the connecting plate 24 parallel to the thickness direction of the upper mold base 1. The sidewall of the connecting plate 24 is in contact with the groove wall of the receiving groove 311. A connecting groove 34 is provided at the bottom of the receiving groove 311, passing through the lower mounting plate 31 and the upper mounting plate 32 sequentially along the sliding direction of the upper mold base 1. The number of connecting grooves 34 and punches 21 is the same as the number of pads 33 and corresponds one-to-one. One end of the punch 21 is fixedly connected to the surface of the connecting plate 24 away from the bottom of the slide groove 11. The other end of the punch 21 passes through the connecting groove 34 and extends out of the upper mounting plate 32. The sidewall of the punch 21 is in contact with the groove wall of the connecting groove 34. The end of the punch 21 away from the connecting plate 24 is used for processing the workpiece. A groove 231 is provided on the side of the slide plate 23 away from the bottom of the slide groove 11. Several grooves 231 are provided, spaced apart along the sliding direction of the slide plate 23. In this embodiment, five grooves 231 are provided. A protrusion 241 is fixedly connected to the side of the connecting plate 24 near the bottom of the slide groove 11. The number of protrusions 241 is the same as the number of grooves 231 and corresponds one-to-one. The protrusions 241 are used to embed into the grooves 231. A first chamfer 232 is provided on the side wall of the groove 231 near the fixing plate 25. A second chamfer 2411 is provided at the end of the protrusion 241 near the bottom of the slide groove 11. The second chamfer 2411 is located on the side of the protrusion 241 near the first chamfer 232 and is used to abut against the first chamfer 232.

[0044] The implementation principle of the stamping die ejection structure in this application embodiment is as follows: During stamping, after the upper die holder 1 and the lower die holder 4 are closed, the piston rod of the ejection drive cylinder 22 extends and pushes the slide plate 23 to slide. The first chamfer 232 abuts against the second chamfer 2411, pushing the connecting plate 24 to slide closer to the lower die holder 4, and driving the punch 21 to slide closer to the lower die holder 4, thereby realizing the processing of the workpiece.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A press die ejection structure characterized by: The utility model provides an ejection assembly and an upper die holder, and the ejection assembly comprises a punch, a connecting plate and an ejection driving cylinder.

2. The ejector structure of a press mold according to claim 1, characterized by: The ejection assembly is provided with a plurality of ejection assemblies, and the plurality of ejection assemblies are evenly distributed on the upper die holder.

3. The ejector structure of a press mold according to claim 2, characterized by: The ejection assembly further comprises a sliding plate, the sliding plate is slidably connected to the upper die holder, the sliding direction of the sliding plate is horizontal, the ejection driving cylinder is used for driving the sliding plate to slide, one side of the sliding plate close to the connecting plate is provided with a groove, one side of the connecting plate close to the sliding plate is connected with a protruding block, the protruding block is used for being embedded in the groove, one side of the groove along the sliding direction of the sliding plate is provided with a first chamfer, and the first chamfer is used for abutting against the protruding block.

4. The ejector structure of a press mold according to claim 3, characterized by: The groove is provided with a plurality of grooves, the plurality of grooves are spaced apart along the sliding direction of the sliding plate, the number of the protruding blocks is the same as that of the grooves and one-to-one correspondence exists between the protruding blocks and the grooves.

5. The ejector structure of a press mold according to claim 3, characterized by: One end of the protruding block close to the groove bottom is provided with a second chamfer, the second chamfer is located on one side of the protruding block close to the first chamfer, and the second chamfer is used for abutting against the first chamfer.

6. The ejector structure of a press mold according to claim 3, characterized by: The upper die holder is provided with a sliding groove, the sliding plate is slidably embedded in the sliding groove, and the side wall of the sliding plate is attached to the groove wall of the sliding groove.

7. The ejector structure of a press mold according to claim 6, characterized by: One end of the sliding groove along the sliding direction of the sliding plate penetrates the upper die holder, the ejection driving cylinder is connected to the side wall of the upper die holder, and the piston rod of the ejection driving cylinder extends into the sliding groove.

8. The ejector structure of a press mold according to claim 7, characterized by: The utility model further comprises a mounting seat, the mounting seat is connected to the upper die holder, one side of the mounting seat close to the upper die holder is provided with an accommodating groove, the accommodating groove is communicated with the sliding groove, the connecting plate is slidably embedded in the accommodating groove, the side wall of the connecting plate is attached to the groove wall of the accommodating groove, the groove bottom of the accommodating groove is provided with a communication groove, the number of the communication grooves is the same as that of the punches and one-to-one correspondence exists between the communication grooves and the punches, the punch extends out of the mounting seat after penetrating the communication groove, and the side wall of the punch is attached to the groove wall of the communication groove.

9. The ejector structure of a press mold according to claim 8, characterized by: The mounting seat (3) comprises a lower mounting plate (31), an upper mounting plate (32) and a cushion block (33); the lower mounting plate (31) is connected to the upper die seat (1); the lower mounting plate (31) is provided with a plurality of first mounting holes (312); a plurality of the first mounting holes (312) are distributed along the circumference of the lower mounting plate (31) at intervals; the first mounting holes (312) are used for the bolt to pass through and then be screwed with the upper die seat (1); the upper mounting plate (32) is connected to the side of the lower mounting plate (31) away from the upper die seat (1); the cushion block (33) is the same in number as the punch (21) and one-to-one corresponding; the cushion block (33) is connected to the side of the upper mounting plate (32) away from the lower mounting plate (31); the cushion block (33) is provided with a third mounting hole (331); the upper mounting plate (32) is provided with a second mounting hole (323); the second mounting hole (323) is the same in number as the third mounting hole (331) and one-to-one corresponding; the third mounting hole (331) and the second mounting hole (323) are used for the bolt to pass through in turn and then be screwed with the lower mounting plate (31).

10. The press die ejection structure according to claim 9, characterized by: The side of the upper mounting plate (32) away from the lower mounting plate (31) is provided with a positioning groove (321); the groove wall of the positioning groove (321) is provided with a round corner (322).

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