Stamping die for stator and rotor fanning strips of motor

Abstract

The motor stator and rotor fanning strip stamping die comprises an upper die base and a lower die base, the upper die base and the lower die base are arranged in parallel in the first direction, the lower die base comprises a lower base plate, a concave fixing plate and a concave die, the concave fixing plate and the lower base plate are sequentially arranged at the top of the lower die base, and the concave die penetrates through the concave fixing plate, the lower base plate and the lower die base in the second direction. The upper die base comprises an upper base plate, a convex fixing plate, a discharging piece and a convex die, the convex fixing plate and the upper base plate are sequentially arranged at the bottom of the upper die base, and the convex die and the discharging piece are both arranged at the bottom of the convex fixing plate. The male die and the female die are correspondingly arranged, the male die moves downwards relative to the lower die base in the second direction through the upper die base, and the male die punches and separates the material piece located at the female die to form the fanning strip. The discharging mode of the fanning strip is changed from discharging between an upper die and a lower die in the prior art to discharging at the bottom of the die, the fanning strip continues to fall and be conveyed in the die after being punched and formed, extra strip taking action and tools such as manipulators are not needed any more, and therefore the purposes of improving production efficiency and saving manufacturing cost are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of stamping dies, and in particular to a stamping die for motor stator and rotor sector pieces. Background Art

[0002] Stator sector sheets and rotor sheet sheets are the main components of stator core and rotor core. Stator sector sheets are also called stator sector stacked steel sheets. They are used in large quantities and have high precision requirements. For wind power, nuclear power, and ship generators, the size is relatively large, with diameters ranging from more than 1M to 7, 8M, or even larger. Due to the large size, the overall processing of the mold can no longer be achieved, and the stator and rotor sheet materials do not have the corresponding size to match them. Therefore, this type of sheet is divided into sectors according to the circle and is manufactured by stacking and laminating one by one. In the prior art, a robot is often set on the discharge side of the sector sheet stamping die. The robot transfers the sector sheet once the die is stamped. This method makes the discharge process of the sector sheet cumbersome and reduces the yield. At the same time, an additional robot needs to be added, which incurs additional costs. Summary of the invention

[0003] The invention provides a stamping die for motor stator and rotor sector pieces, so as to solve the problem of low material receiving efficiency caused by transferring sector pieces by a robot in the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is to provide a motor stator and rotor sector stamping die, including an upper die base and a lower die base, wherein the upper die base and the lower die base are arranged in parallel along the first direction, and the lower die base includes a lower pad, a concave fixing plate, and a concave die, and the concave fixing plate and the lower pad are sequentially arranged on the top of the lower die base, and the concave die is penetrated through the concave fixing plate, the lower pad and the lower die base along the second direction, and the first direction is perpendicular to the second direction.

[0005] The upper die base includes an upper pad, a convex fixing plate, a stripping sheet, and a convex die. The convex fixing plate and the upper pad are sequentially arranged at the bottom of the upper die base, and the convex die and the stripping sheet are both arranged at the bottom of the convex fixing plate. The convex die is arranged corresponding to the concave die, and is used for the upper die base to move downward along the second direction relative to the lower die base, and the convex die punches and separates the sheet located at the concave die to form a fan-shaped sheet.

[0006] The technical solution provided by the present invention has the following beneficial effects compared with the prior art: the discharge method of the fan-shaped slices is changed from the discharge between the upper mold and the lower mold in the prior art to the discharge from the bottom of the mold, the fan-shaped slices are formed in a single operation in the mold, and continue to fall and be transferred in the mold after stamping, and no additional slice picking actions and tools such as robots are required, thereby achieving the purpose of improving production efficiency and saving manufacturing costs.

[0007] In some embodiments, the lower die base also includes a lower die pad, which is arranged at the bottom of the lower die base, and the lower die pad includes a material unloading space and a material blocking assembly, the material unloading space is arranged corresponding to the die, and the material blocking assembly includes a first plate group and a second plate group, the first plate group and the second plate group are respectively arranged on both sides of the material unloading space along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0008] By adopting the above technical solution, by adding a lower die pad to the lower die base and setting a material unloading space and a material stop assembly on the lower die pad, the positioning and movement of the material during the stamping process can be more accurately controlled, thereby improving the stamping accuracy and the quality of the finished product. The first plate group and the second plate group are respectively arranged on both sides of the material unloading space, which can reduce the material deviation during the stamping process, provide better material support and positioning, and improve the consistency of the fan-shaped sheet stacking.

[0009] In some embodiments, the first plate group and the second plate group both include a plurality of baffles spaced apart along the first direction, each of the baffles extending along the third direction, and a driving cylinder is provided on the side away from the unloading space for driving the baffle to move along the third direction to block the unloading space and carry a plurality of the fan-shaped sheets to form a fan-shaped sheet group.

[0010] By adopting the above technical solution, each baffle is flexibly moved along the third direction by driving the cylinder, so that the blocking of the unloading space and the bearing of the material are more efficient and controllable, and can be adjusted according to production needs.

[0011] In some embodiments, the motor stator and rotor sector stamping die further includes a transmission assembly, which is arranged below the lower die pad and includes a conveyor belt and a drive motor. The conveyor belt is arranged corresponding to the unloading space and is used to receive the sector group falling from the unloading space. The drive motor is used to drive the conveyor belt to transmit along the first direction.

[0012] By adopting the above technical solution, the setting of the conveyor belt enables the punched sector-shaped sheet group to be quickly moved out of the working area to prepare for the next punching cycle, thereby improving the overall production efficiency. The setting of the conveyor belt and the drive motor realizes the automatic transmission of the sector-shaped sheet group, reduces the need for manual handling, and improves the degree of production automation.

[0013] In some embodiments, the stamping die for the stator and rotor sector pieces of the motor further includes a guide assembly, the guide assembly including a first floating plate and a second floating plate, the first floating plate and the second floating plate are both arranged on the top of the concave fixing plate, and are respectively arranged on both sides of the concave die along the third direction, the first floating plate side is a feed end, and the second floating plate side is a discharge end. The first floating plate and the second floating plate both extend along the first direction, and both ends of the top are provided with bending baffles arranged opposite to each other, which are used to cooperate with the first floating plate and the second floating plate to limit the position of the sheet.

[0014] By adopting the above technical solution, the sheet is transmitted along the third direction. Through the arrangement of the first floating plate and the second floating plate, in cooperation with the bending baffles at the top ends, the sheet can be accurately limited to ensure the accuracy and stability of the sheet during the stamping process.

[0015] In some embodiments, the stamping die for the motor stator and rotor sector further includes a trimming assembly, which is disposed on one side of the convex fixing plate along the third direction and located on the side of the floating plate away from the concave die along the third direction. The trimming assembly includes a plurality of cutters, which are spaced apart along the first direction and are used to cooperate with the concave fixing plate for trimming when the upper die seat moves downward.

[0016] By adopting the above technical solution, the stamped waste sheets are cut into sections by multiple cutters to facilitate subsequent collection and transportation. Multiple processes can be completed in one stamping process, reducing additional processing steps, thereby improving production efficiency.

[0017] In some embodiments, the guide assembly further includes a plurality of lifting guide posts, which are disposed between the upper die seat and the lower die seat and are respectively located on both sides of the material discharge space along the first direction. Each of the lifting guide posts includes an upper guide post and a lower guide sleeve, wherein the upper guide post is disposed at the bottom of the upper die seat and extends along the second direction. The lower guide sleeve is disposed at the top of the lower die seat and is disposed one-to-one with the upper guide post for slidingly matching with the upper guide post.

[0018] By adopting the above technical solution, the lifting guide pin and guide sleeve in the guide assembly can ensure the precise fit between the upper die base and the lower die base, enhance the stability of the die during the stamping process, and reduce the deformation and wear of the die.

[0019] In some embodiments, the stamping die for the stator and rotor sector segments of the motor further includes a limit assembly, the limit assembly including an upper limit column and a lower limit column, the upper limit column is arranged on one side of the upper pad along the third direction, the lower limit column is correspondingly arranged on one side of the lower pad along the third direction, the upper limit column and the lower limit column both extend along the second direction, and are used for the upper limit column to abut against the lower limit column for limiting when the upper die seat moves downward.

[0020] By adopting the above technical solution, the upper limit column and the lower limit column of the limit assembly can ensure the precise matching of the upper die base and the lower die base during the stamping process, thereby improving the stamping accuracy and reducing the failure rate of the mold during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, among which: Figure 1 It is a cross-sectional view of a stamping die for a motor stator and rotor sector provided by the present invention; Figure 2 The present invention provides a three-dimensional stamping die for a motor stator and rotor sector. Figure 1 ; Figure 3 It is a schematic diagram of sheet stamping of a stamping die for a motor stator and rotor sector sheet provided by the present invention; Figure 4 The present invention provides a three-dimensional stamping die for a motor stator and rotor sector. Figure 2 ; In the figure: 1. Lower die base; 10. Lower pad; 11. Concave fixing plate; 12. Concave die; 2. Upper die base; 20. Upper pad; 21. Convex fixing plate; 22. Unloading sheet; 23. Punch; 3. Lower die pad; 30. First plate group; 31. Second plate group; 32. Baffle; 33. Driving cylinder; 40. First floating plate; 41. Second floating plate; 42. Bending baffle; 50. Cutter; 60. Upper guide post; 61. Lower guide sleeve; 70. Upper limit post; 71. Lower limit post; 8. Conveyor belt; 9. Sheet. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] See also Figures 1 to 4 As shown, Figure 1 A cross-sectional view of a stamping die for a motor stator and rotor sector provided in the present application is shown; Figure 2 The present invention provides a three-dimensional diagram of a stamping die for a motor stator and rotor sector. Figure 1 ; Figure 3 A schematic diagram of stamping a sheet 9 of a stamping die for a motor stator and rotor sector sheet provided in the present application is shown; Figure 4 The present invention provides a three-dimensional diagram of a stamping die for a motor stator and rotor sector. Figure 2 .

[0024] like Figures 1 to 4 As shown, the technical solution adopted by the present invention is to provide a motor stator and rotor sector stamping die, including an upper die base 2 and a lower die base 1, wherein the upper die base 2 and the lower die base 1 are arranged along a first direction ( Figure 2 The lower die base 1 includes a lower plate 10, a concave fixing plate 11, and a concave die 12. The concave fixing plate 11 and the lower plate 10 are sequentially arranged on the top of the lower die base 1. The concave die 12 is arranged along the second direction ( Figure 2 The first direction is perpendicular to the second direction.

[0025] The upper die base 2 includes an upper pad 20, a convex fixing plate 21, a stripping piece 22, and a punch 23. The convex fixing plate 21 and the upper pad 20 are sequentially arranged at the bottom of the upper die base 2, and the punch 23 and the stripping piece 22 are both arranged at the bottom of the convex fixing plate 21. The punch 23 is arranged corresponding to the die 12, and is used for the punch 23 to punch and separate the sheet 9 located at the die 12 to form a sector sheet by moving the upper die base 2 downward relative to the lower die base 1 along the second direction.

[0026] The motor stator and rotor sector stamping die provided in the present application changes the discharging method of the sector from the discharging between the upper die and the lower die in the prior art to the discharging from the bottom of the die. The sector is formed in a single operation in the die, and continues to fall and be transferred in the die after stamping. Additional sheet taking actions and tools such as robots are no longer required, thereby achieving the purpose of improving production efficiency and saving manufacturing costs.

[0027] In some embodiments, reference Figures 1 to 4The lower die base 1 also includes a lower die pad 3, which is arranged at the bottom of the lower die base 1. The lower die pad 3 includes a material discharge space and a material stopper assembly. The material discharge space is arranged corresponding to the concave die 12. The material stopper assembly includes a first plate group 30 and a second plate group 31. The first plate group 30 and the second plate group 31 are respectively arranged in the material discharge space along the third direction ( Figure 2 On both sides of the PCB (as shown in the Y direction), the first direction, the second direction and the third direction are perpendicular to each other.

[0028] For example, by adding a lower die pad 3 to the lower die base 1 and providing a material unloading space and a material stop assembly on the lower die pad 3, the positioning and movement of the material during the stamping process can be more accurately controlled, thereby improving the stamping accuracy and the quality of the finished product. The first plate group 30 and the second plate group 31 are respectively arranged on both sides of the material unloading space, which can reduce the material deviation during the stamping process, provide better material support and positioning, and improve the consistency of the fan-shaped sheet stacking.

[0029] In some embodiments, reference Figures 1 to 4 The first plate group 30 and the second plate group 31 each include a plurality of baffles 32 spaced apart along a first direction, each baffle 32 extending along a third direction, and a driving cylinder 33 is provided on a side away from the material discharge space for driving the baffle 32 to move along the third direction to block the material discharge space, and carry a plurality of fan-shaped sheets to form a fan-shaped sheet group.

[0030] Exemplarily, each baffle 32 is flexibly moved along the third direction by driving the cylinder 33, so that the blocking of the unloading space and the bearing of the material are more efficient and controllable, and can be adjusted according to production needs.

[0031] In some embodiments, reference Figures 1 to 4 The motor stator and rotor sector stamping die also includes a transmission assembly, which is arranged below the lower die pad 3 and includes a conveyor belt 8 and a drive motor. The conveyor belt 8 is arranged corresponding to the material discharge space and is used to receive the sector group falling from the material discharge space. The drive motor is used to drive the conveyor belt 8 to transmit along the first direction.

[0032] Illustratively, the setting of the conveyor belt 8 allows the punched sector sheet group to be quickly moved out of the working area to prepare for the next punching cycle, thereby improving the overall production efficiency. The setting of the conveyor belt 8 and the drive motor realizes the automatic transmission of the sector sheet group, reduces the need for manual handling, and improves the degree of production automation.

[0033] In some embodiments, reference Figures 1 to 4The stamping die for the stator and rotor fan-shaped pieces of the motor also includes a guide assembly, which includes a first floating plate 40 and a second floating plate 41. The first floating plate 40 and the second floating plate 41 are both arranged on the top of the concave fixing plate 11, and are respectively arranged on both sides of the concave die 12 along the third direction. The first floating plate 40 side is the feed end, and the second floating plate 41 side is the discharge end. The first floating plate 40 and the second floating plate 41 both extend along the first direction, and both ends of the top are provided with a bending baffle 42 arranged opposite to each other, which is used to cooperate with the first floating plate 40 and the second floating plate 41 to limit the sheet 9.

[0034] Exemplarily, the sheet 9 is transported along the third direction, and the first floating plate 40 and the second floating plate 41 are arranged in cooperation with the bending baffles 42 at the top ends, so as to accurately limit the sheet 9 and ensure the accuracy and stability of the sheet 9 during the stamping process.

[0035] In some embodiments, reference Figures 1 to 4 The stamping die for the stator and rotor sector pieces of the motor further comprises a trimming assembly, which is arranged on one side of the convex fixing plate 21 along the third direction and on the side of the floating plate away from the concave die 12 along the third direction. The trimming assembly comprises a plurality of cutters 50, which are arranged at intervals along the first direction and are used to cooperate with the concave fixing plate 11 for trimming when the upper die holder 2 moves downward.

[0036] Exemplarily, the stamped waste sheet 9 is cut into sections by a plurality of cutters 50 to facilitate subsequent collection and transportation. Multiple processes can be completed in one stamping process, thus reducing additional processing steps and improving production efficiency.

[0037] In some embodiments, reference Figures 1 to 4 The guide assembly further includes a plurality of lifting guide posts, which are arranged between the upper die base 2 and the lower die base 1 and are respectively located on both sides of the material discharge space along the first direction. Each lifting guide post includes an upper guide post 60 and a lower guide sleeve 61. The upper guide post 60 is arranged at the bottom of the upper die base 2 and extends along the second direction. The lower guide sleeve 61 is arranged at the top of the lower die base 1 and is arranged one-to-one with the upper guide post 60 for sliding with the upper guide post 60.

[0038] Exemplarily, the lifting guide pins and guide sleeves in the guide assembly can ensure the precise fit between the upper die base 2 and the lower die base 1, enhance the stability of the die during the stamping process, and reduce deformation and wear of the die.

[0039] In some embodiments, reference Figures 1 to 4The stamping die for the motor stator and rotor sector pieces also includes a limit assembly, which includes an upper limit column 70 and a lower limit column 71. The upper limit column 70 is arranged on one side of the upper pad 20 along the third direction, and the lower limit column 71 is correspondingly arranged on one side of the lower pad 10 along the third direction. The upper limit column 70 and the lower limit column 71 both extend along the second direction, and are used for the upper limit column 70 to abut against the lower limit column 71 for limiting when the upper die base 2 moves downward.

[0040] Exemplarily, the upper limit post 70 and the lower limit post 71 of the limit assembly can ensure the precise fit between the upper die base 2 and the lower die base 1 during the stamping process, thereby improving the stamping accuracy and reducing the failure rate of the mold during operation.

[0041] The above description is only an implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, should be included in the protection scope of the present invention.

Claims

1. A stamping die for motor stator and rotor sector pieces, characterized in that: It includes an upper die base and a lower die base, wherein: The upper die base and the lower die base are arranged in parallel along the first direction, the lower die base comprises a lower pad, a concave fixing plate, and a concave die, the concave fixing plate and the lower pad are sequentially arranged on the top of the lower die base, the concave die is penetrated through the concave fixing plate, the lower pad and the lower die base along the second direction, and the first direction is perpendicular to the second direction; The upper die base includes an upper pad, a convex fixing plate, a discharge sheet, and a punch. The convex fixing plate and the upper pad are sequentially arranged at the bottom of the upper die base, and the punch and the discharge sheet are both arranged at the bottom of the convex fixing plate. The punch and the die are correspondingly arranged, and are used for moving downward along the second direction relative to the lower die base through the upper die base, and the punch punches and separates the sheet located at the die to form a fan-shaped sheet.

2. The stamping die for the motor stator and rotor sector pieces according to claim 1, characterized in that: The lower die base also includes a lower die pad, which is arranged at the bottom of the lower die base, and the lower die pad includes a material unloading space and a material blocking assembly, the material unloading space is arranged corresponding to the die, and the material blocking assembly includes a first plate group and a second plate group, the first plate group and the second plate group are respectively arranged on both sides of the material unloading space along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

3. The stamping die for the motor stator and rotor sector pieces according to claim 2, characterized in that: The first plate group and the second plate group both include a plurality of baffles spaced apart along the first direction, each of the baffles extending along the third direction, and a driving cylinder is provided on the side away from the unloading space for driving the baffle to move along the third direction to block the unloading space and carry a plurality of the fan-shaped sheets to form a fan-shaped sheet group.

4. The stamping die for the motor stator and rotor sector pieces according to claim 2, characterized in that: It also includes a transmission component, which is arranged below the lower mold pad and includes a conveyor belt and a drive motor; the conveyor belt is arranged corresponding to the unloading space and is used to receive the fan-shaped sheet group falling from the unloading space; the drive motor is used to drive the conveyor belt to transmit along the first direction.

5. The stamping die for the motor stator and rotor sector pieces according to claim 1, characterized in that: It also includes a guide assembly, which includes a first floating plate and a second floating plate. The first floating plate and the second floating plate are both arranged on the top of the concave fixing plate, and are respectively arranged on both sides of the concave mold along the third direction. The first floating plate side is the feeding end, and the second floating plate side is the discharging end. The first floating plate and the second floating plate both extend along the first direction, and both ends of the top are provided with bending baffles arranged opposite to each other, which are used to cooperate with the first floating plate and the second floating plate to limit the material sheet.

6. The stamping die for the motor stator and rotor sector pieces according to claim 1, characterized in that: It also includes a trimming assembly, which is arranged on one side of the convex fixing plate along the third direction and is located on the side of the floating plate along the third direction away from the concave mold; the trimming assembly includes a plurality of cutters, which are arranged at intervals along the first direction and are used to cooperate with the concave fixing plate for trimming when the upper mold seat moves downward.

7. The stamping die for the motor stator and rotor sector pieces according to claim 1, characterized in that: The guide assembly also includes a plurality of lifting guide pillars, which are arranged between the upper die base and the lower die base and are respectively located on both sides of the unloading space along the first direction; each of the lifting guide pillars includes an upper guide pillar and a lower guide sleeve, the upper guide pillar is arranged at the bottom of the upper die base and extends along the second direction; the lower guide sleeve is arranged at the top of the lower die base and is arranged one-to-one with the upper guide pillar for sliding with the upper guide pillar.

8. The stamping die for the motor stator and rotor sector pieces according to claim 1, characterized in that: It also includes a limit assembly, which includes an upper limit column and a lower limit column. The upper limit column is arranged on one side of the upper pad along the third direction, and the lower limit column is correspondingly arranged on one side of the lower pad along the third direction. The upper limit column and the lower limit column both extend along the second direction, and are used for the upper limit column to abut and limit against the lower limit column when the upper mold base moves downward.

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