Deflection multi-station continuous stamping die structure

Abstract

The utility model relates to the field of stamping dies, in particular to a deflection multi-station continuous stamping die structure which comprises a lower die fixing plate and an upper die fixing plate, a floating material supporting plate is installed on the lower die fixing plate, an upper die stamping die core is arranged on the upper die fixing plate, and the upper die stamping die core comprises a rotor upper die core and a stator upper die core. Material guide nails and guide columns are arranged on the upper die fixing plate, material guide holes and guide grooves are formed in the floating material supporting plate, the rotor upper die core and the stator upper die core are coaxial with the guide columns, the guide grooves correspond to the guide columns in position, and the material guide nails are arranged around punching areas of the rotor upper die core and the stator upper die core. During die assembly, the material guide nails can be inserted into the material guide holes in a paired mode, the guide columns can penetrate through the guide grooves in a paired mode, the guide columns of the die are improved from the outside to the center guide columns in the die, the die assembly precision in the continuous punching process is guaranteed, the die can adapt to punching column numbers and deflection distances of different specifications, and the production efficiency is improved. There is no need to separately manufacture a mold for each specification.

Description

Technical Field

[0001] This utility model relates to the field of stamping dies, and in particular to a swaying multi-station continuous stamping die structure. Background Technology

[0002] Oscillating feed stamping is a highly efficient metal processing technology, especially suitable for blanking and stamping of round sheets. Through an advanced control system and a precise mechanical structure, the oscillating feeder achieves high-precision material conveying and stamping, significantly improving product quality and consistency. The oscillating feeder design reduces scrap generated during stamping production, and through precise control, it achieves inter-cutting stamping of round sheets, maximizing material utilization.

[0003] An existing stamping stator and rotor die can eject the stator and rotor from the positioning groove after stamping, thus reducing the difficulty of removing the stator and rotor from the placement groove of the bottom die, thereby improving the ease of removal and thus improving the processing efficiency of the stator and rotor. It includes a bottom die, a top die, four sets of guide rod assemblies, and four sets of guide tubes. The top of the top die and the bottom of the bottom die are respectively provided with an upper mounting plate and a lower mounting plate, and the top of the bottom die is provided with a positioning groove. It also includes four sets of ejector rods, a power plate, four sets of power springs, a drive rod, a limit rod, a locking rod, a rotating shaft, and a coil spring. The bottom die has a working cavity inside. The top left front, left rear, right front, and right rear sides of the working cavity are respectively connected to the bottom left front, left rear, right front, and right rear sides of the positioning groove, and four sets of telescopic holes are provided. The front center of the working cavity is connected to a drive sliding hole.

[0004] The strip used in oscillating feed stamping is typically wider than that used in single-feed stamping. Furthermore, the strip width varies depending on the number of stamping rows. If existing stamping dies are used, the guide posts at the die edge limit the number of stamping rows and the oscillation distance in oscillating feed. During oscillation, the guide posts collide with the strip. Manufacturing dies according to different specifications for the number of stamping rows and oscillation distances would significantly increase production and maintenance costs, making the process inflexible. Utility Model Content

[0005] In order to overcome the shortcomings of existing technical solutions, this utility model provides a swaying multi-station continuous stamping die structure, which can effectively solve the technical problem that the guide pillars on the edge of the die will restrict the swaying feeding.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A multi-station continuous stamping die structure includes a lower die fixing plate and an upper die fixing plate. A floating material support plate is installed on the lower die fixing plate, and the floating material support plate is provided with a rotor forming station and a stator forming station. An upper die stamping core is provided on the upper die fixing plate. The lower die fixing plate and the upper die fixing plate can approach each other to close the die and stamp products on the strip material. The upper die stamping core includes a rotor upper die core and a stator upper die core. A rotor lower die core corresponding to the rotor upper die core is provided on the rotor forming station, and a stator lower die core corresponding to the stator upper die core is provided on the stator forming station. Material guide pins and guide pillars are provided on the upper die fixing plate, and material guide holes and guide grooves are provided on the floating material support plate. The rotor upper die core and the stator upper die core are coaxial with the guide pillars, and the position of the guide grooves corresponds to the guide pillars. The material guide pins are located around the stamping areas of the rotor upper die core and the stator upper die core. When the die is closed, the material guide pins can be paired and inserted into the material guide holes, and the guide pillars can be paired and passed through the guide grooves.

[0008] Furthermore, the rotor upper die core includes a primary punching upper die, a secondary punching upper die, and a trimming upper die. The middle of the primary punching upper die, the secondary punching upper die, and the trimming upper die are all respectively provided with guide posts. A lower die shearing plate is provided between the lower die fixing plate and the floating material support plate. A guide sleeve corresponding to the guide post is provided on the lower die shearing plate, and one end of the guide sleeve extends into the guide groove.

[0009] Furthermore, the two ends of the lower die shearing plate are the feeding end and the discharging end, respectively. The rotor forming station is located near the feeding end, and the stator forming station is located near the discharging end. The rotor forming station includes a primary punching section, a secondary punching section, and a trimming section. The primary punching section, the secondary punching section, and the trimming section are arranged equidistantly from the feeding end toward the stator forming station.

[0010] Furthermore, material guide pins are provided in the scrap areas between the primary punching die, the secondary punching die, the trimming die, and the stator die core.

[0011] Furthermore, the upper mold fixing plate is provided with a guide nail fixing plate, and the material guide nail is installed on the guide nail fixing plate. The guide post, the rotor upper mold core and the stator upper mold core all pass through the guide nail fixing plate.

[0012] Furthermore, an upper mold pressure plate is provided at the end of the guide pin fixing plate away from the upper mold fixing plate. The upper mold pressure plate and the guide pin fixing plate are provided with a return spring. The upper mold pressure plate is provided with clearance holes corresponding to the material guide pin, guide post, rotor upper mold core and stator upper mold core.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: Based on the requirements of sway feeding, the mold guide pillar is improved from an external one to an internal central guide pillar. This design cleverly solves the problem that traditional mold edge guide pillars limit the number of stamping rows and the sway distance during sway feeding. The internal central guide pillar not only ensures the mold closing accuracy during continuous stamping but also allows the mold to adapt to different specifications of stamping rows and sway distances, eliminating the need to manufacture molds separately for each specification, thus greatly reducing production and management / maintenance costs. Simultaneously, this design also improves the flexibility and versatility of the mold, enabling it to be more widely applied in different production scenarios. Setting material guide holes and material guide pins in the triangular scrap area around the stamping area further improves the material positioning accuracy during sway feeding. The paired use of material guide holes and material guide pins ensures the stability and accuracy of the material during stamping, avoiding stamping defects caused by material offset or misalignment. This not only improves product quality and consistency but also reduces scrap rate and production costs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0015] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0016] Figure 3 This is the front view of the present invention;

[0017] Figure 4 This is a top view of the floating material support plate in this utility model;

[0018] Figure 5 This is a schematic diagram of the strip stamping process in this utility model;

[0019] The labels in the diagram are: 1-lower die fixing plate, 2-upper die fixing plate, 3-floating material support plate, 4-lower die shearing plate, 5-guide pin fixing plate, 6-upper die pressing plate, 7-rotor forming station, 8-stator forming station, 9-first punching section, 10-second punching section, 11-trimming section, 12-guide post, 13-guide groove, 14-guide sleeve, 15-material guide pin, 16-material guide hole, 17-strip material, 18-stator lamination, 19-rotor lamination. Detailed Implementation

[0020] 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.

[0021] The following is combined Figures 1-5 A detailed description of the structure of a multi-station continuous stamping die according to this utility model is provided:

[0022] A multi-station continuous stamping die structure includes a lower die fixing plate 1 and an upper die fixing plate 2. A floating material support plate 3 is mounted on the lower die fixing plate 1, and the floating material support plate 3 is provided with a rotor forming station 7 and a stator forming station 8. An upper die stamping core is provided on the upper die fixing plate 2. The lower die fixing plate 1 and the upper die fixing plate 2 can approach each other to close the die and stamp the product onto the strip material 17. The upper die stamping core includes a rotor upper die core and a stator upper die core. A rotor lower die core corresponding to the rotor upper die core is provided on the rotor forming station 7. The rotor forming station 8 is equipped with a stator lower mold core corresponding to the stator upper mold core. The upper mold fixing plate 2 is equipped with material guide pins 15 and guide pillars 12. The floating material support plate 3 is equipped with material guide holes 16 and guide grooves 13. The rotor upper mold core and the stator upper mold core are coaxial with the guide pillars 12. The position of the guide grooves 13 corresponds to the guide pillars 12. The material guide pins 15 are set around the stamping area of ​​the rotor upper mold core and the stator upper mold core. When the mold is closed, the material guide pins 15 can be paired and inserted into the material guide holes 16, and the guide pillars 12 can be paired and passed through the guide grooves 13.

[0023] To meet the requirements of skewed feeding, the mold guide post 12 was modified from an external one to an internal center guide post 12. This design cleverly solves the problem of traditional mold edge guide posts 12 limiting the number of punching rows and the skew distance during skewed feeding. The internal center guide post 12 not only ensures the mold closing accuracy during continuous stamping but also allows the mold to adapt to different specifications of punching rows and skew distances, eliminating the need to manufacture molds for each specification, thus greatly reducing production and management / maintenance costs. Simultaneously, this design improves the mold's flexibility and versatility, enabling it to be applied more widely to different production scenarios. Material guide holes 16 and material guide pins 15 are installed in the triangular scrap area around the stamping area, further improving the material positioning accuracy during skewed feeding. The paired use of material guide holes 16 and material guide pins 15 ensures the stability and accuracy of the material during stamping, avoiding stamping defects caused by material offset or misalignment. This not only improves product quality and consistency but also reduces scrap rate and production costs.

[0024] The rotor upper die core includes a primary punching upper die, a secondary punching upper die, and a trimming upper die. Guide posts 12 pass through the middle of each of the primary punching upper die, secondary punching upper die, and trimming upper die. A lower die shearing plate 4 is provided between the lower die fixing plate 1 and the floating material support plate 3. A guide sleeve 14 corresponding to the guide post 12 is provided on the lower die shearing plate 4, with one end of the guide sleeve 14 extending into the guide groove 13. Material guide pins 15 are provided in the scrap areas between the stamping areas of the primary punching upper die, secondary punching upper die, trimming upper die, and stator upper die core, ensuring precise guidance and positioning during each die closing process. This design enhances the positioning stability of the material, avoids scrap caused by material misalignment during stamping, and improves the product qualification rate and quality. Combining the advantages of high-speed stamping dies and compound dies, a multi-station oscillating feeding stamping die is formed. After four stamping passes in the same stamping area of ​​the strip 17, stator laminations 18 and rotor laminations 19 can be produced. This enables the motor stator and rotor laminations 19 to be stamped into finished products simultaneously, and improves the dimensional accuracy of the finished stator and rotor laminations 19 of the new energy motor. The punching and trimming of the rotor laminations 19 are separated to avoid the mixing of punching waste with the rotor laminations 19.

[0025] The lower die shearing plate 4 has an infeed end and an outlet end at its two ends, respectively. The rotor forming station 7 is located near the infeed end, and the stator forming station 8 is located near the outlet end. The rotor forming station 7 includes a primary punching section 9, a secondary punching section 10, and a trimming section 11. The primary punching section 9, the secondary punching section 10, and the trimming section 11 are arranged equidistantly from the infeed end toward the stator forming station 8. This layout makes the stamping process more orderly and efficient. At the same time, it also adapts to the characteristics of skewed feeding, improving material utilization and production efficiency.

[0026] The upper die fixing plate 2 is provided with a guide pin fixing plate 5, and the material guide pin 15 is installed on the guide pin fixing plate 5. The guide post 12, the rotor upper die core and the stator upper die core all pass through the guide pin fixing plate 5, making the die structure more compact and stable, and improving the overall rigidity and stamping stability. The end of the guide pin fixing plate 5 away from the upper die fixing plate 2 is provided with an upper die pressure plate 6. The upper die pressure plate 6 and the guide pin fixing plate 5 are provided with return springs. The upper die pressure plate 6 is provided with clearance holes corresponding to the material guide pin 15, the guide post 12, the rotor upper die core and the stator upper die core. During stamping, the strip 17 is placed on the floating material support plate 3. During the die closing process, the upper die pressure plate 6 and the floating material support plate 3 can clamp the strip 17 to prevent the strip 17 from shifting.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-station continuous stamping die structure with eccentricity, comprising a lower die fixing plate and an upper die fixing plate, wherein a floating material support plate is mounted on the lower die fixing plate, the floating material support plate is provided with a rotor forming station and a stator forming station, and an upper die stamping core is provided on the upper die fixing plate, the lower die fixing plate and the upper die fixing plate can approach each other to close the die and stamp the product on the strip material, characterized in that: The upper die stamping core includes a rotor upper die core and a stator upper die core. A rotor lower die core corresponding to the rotor upper die core is provided at the rotor forming station, and a stator lower die core corresponding to the stator upper die core is provided at the stator forming station. Material guide pins and guide posts are provided on the upper die fixing plate, and material guide holes and guide grooves are provided on the floating material support plate. The rotor upper die core and the stator upper die core are coaxial with the guide posts, and the position of the guide grooves corresponds to the guide posts. The material guide pins are located around the stamping areas of the rotor upper die core and the stator upper die core. When the die is closed, the material guide pins can be paired and inserted into the material guide holes, and the guide posts can be paired and passed through the guide grooves.

2. The eccentric multi-station continuous stamping die structure according to claim 1, characterized in that: The rotor upper die core includes a primary punching upper die, a secondary punching upper die, and a trimming upper die. Guide posts pass through the middle of the primary punching upper die, the secondary punching upper die, and the trimming upper die. A lower die shearing plate is provided between the lower die fixing plate and the floating material support plate. A guide sleeve corresponding to the guide post is provided on the lower die shearing plate, and one end of the guide sleeve extends into the guide groove.

3. The eccentric multi-station continuous stamping die structure according to claim 2, characterized in that: The two ends of the lower die shearing plate are the feeding end and the discharging end, respectively. The rotor forming station is set near the feeding end, and the stator forming station is set near the discharging end. The rotor forming station includes a primary punching section, a secondary punching section, and a trimming section. The primary punching section, the secondary punching section, and the trimming section are arranged equidistantly from the feeding end toward the stator forming station.

4. The oscillating multi-station continuous stamping die structure according to claim 2, characterized in that: Material guide pins are provided in the scrap areas between the primary punching die, the secondary punching die, the trimming die, and the stator die core.

5. A multi-station continuous stamping die structure according to any one of claims 1-3, characterized in that: The upper mold fixing plate is provided with a guide nail fixing plate, and the material guide nail is installed on the guide nail fixing plate. The guide post, the rotor upper mold core and the stator upper mold core all pass through the guide nail fixing plate.

6. The eccentric multi-station continuous stamping die structure according to claim 5, characterized in that: The guide pin fixing plate is provided with an upper mold pressure plate at one end away from the upper mold fixing plate. The upper mold pressure plate and the guide pin fixing plate are provided with return springs. The upper mold pressure plate is provided with clearance holes corresponding to the material guide pin, guide post, rotor upper mold core and stator upper mold core.

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