All-compound die for rotor fanning strip of ZC permanent magnet motor

Abstract

According to the ZC permanent magnet motor rotor fanning strip full-compound die, punching of the rotor fanning strip is completed through one set of die, and all magnetic steel grooves, ventilation holes and riveting round holes are channels for waste leakage; the die is provided with an upper die base and a lower die base. A plurality of punch-die splicing blocks are mounted between the upper die holder and the lower die holder; the plurality of convex-concave die splicing blocks are formed by splicing small block splicing structure inserts; the positions of the male and female die splicing blocks are guaranteed through positioning keys, small positioning keys, positioning pins and guide columns; an unloading and returning plate and a pushing plate are arranged on the convex-concave die splicing block; guide columns are mounted on the outer rings of the lower die holder and the upper die holder; an upper die small guide pillar and a lower die small guide pillar are mounted on the inner rings of the lower die holder and the upper die holder; the die is provided with a cylinder pushing device; and the air cylinder pushing device pushes the formed product to the upper surface of the material belt. The punching of the rotor fanning strip is completed by one set of die, and the cylinder pushing device is combined, so that the production efficiency can be obviously improved, and the operation safety is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of operation and transportation stamping die sets, and relates to a full-duplex die for a ZC permanent magnet motor rotor sector. Background Art

[0002] The ZC permanent magnet motor is a type of permanent magnet motor. It uses built-in permanent magnets (such as rare earth permanent magnets) to generate a constant magnetic field, eliminating the need for external excitation power. This simplifies the motor structure and improves efficiency. ZC permanent magnet motors offer advantages such as simple structure, compact size, light weight, high efficiency, reliable operation, and excellent speed regulation.

[0003] In the existing technology, the mold design for ZC permanent magnet motor rotor segments requires two to three sets to complete the punching of one model of ZC permanent magnet motor rotor segments. In addition, manual material removal is inefficient and poses safety risks. To address this, the following improved technical solution is proposed. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a fully compound mold for ZC permanent magnet motor rotor sector pieces, which can complete the punching of the rotor sector pieces with one set of molds, thereby solving the technical problem that the punching efficiency of the ZC permanent magnet motor rotor sector piece mold is low and there are unsafe factors.

[0005] The technical solution adopted by the utility model is as follows: a fully complex mold for the rotor sector of a ZC permanent magnet motor, a set of molds completes the punching of the rotor sector, and all the magnetic steel grooves, ventilation holes, and riveted circular holes are channels for waste materials to leak down; the mold has an upper mold base and a lower mold base; a plurality of male and female mold blocks are installed between the upper mold base and the lower mold base; a plurality of the male and female mold blocks are spliced ​​together by small-piece splicing structure inserts; the male and female mold blocks are positioned by positioning keys, small positioning keys, positioning pins, and guide pillars; a discharge plate and a push plate are provided on the male and female mold blocks; guide pillars are installed on the outer rings of the lower mold base and the upper mold base; small upper mold guide pillars and small lower mold guide pillars are installed on the inner rings of the lower mold base and the upper mold base; the mold is equipped with a cylinder pushing device; the cylinder pushing device pushes the molded product to the upper surface of the material belt.

[0006] In the above technical solution, as a further improvement of the present invention: a lower pad is provided on the lower die base, and an upper pad is provided on the upper die base; the male and female die blocks are fixed to the upper and lower pads by positioning keys, small positioning keys, and positioning pins, thereby facilitating the adjustment of the mold gap; a lower die limiting column and an upper die limiting column are installed between the lower die base and the upper die base.

[0007] In the above technical solution, as a further improvement of the present invention: a waste cutter is provided on the outside of the mold, and the waste is automatically cut off after each punching step is completed; the waste cutter includes a lower die cutter and a lower die cutter seat.

[0008] In the above technical solution, as a further improvement of the present invention: the male and female mold pieces are further provided with positioning pins, positioning blocks, and lower mold rubber.

[0009] In the above technical solution, as a further improvement of the present invention: a lower die rubber is provided on one side of the lower die base close to the lower die unloading ejector rod.

[0010] In the above technical solution, as a further improvement of the present invention: the upper die base is provided with several upper die long sleeves; the upper die long sleeves are installed in the upper die punching plate; the sleeve guide column is connected to the push plate; the sleeve guide column is connected to the upper die long sleeve guide.

[0011] In the above technical solution, as a further improvement of the present invention: a short upper mold sleeve is provided on the upper mold base, the short upper mold sleeve is connected to the upper mold punching plate, and the upper mold base is connected to the upper pad.

[0012] In the above technical solution, as a further improvement of the present invention: it also includes a guide sleeve, and a guide sleeve pressure plate is installed on the guide sleeve.

[0013] In the above technical solution, as a further improvement of the present invention: the cylinder pushing device includes a cylinder, the cylinder is fixed on the lower die base, the cylinder is connected to the cylinder connecting column, the other end of the cylinder connecting column is connected to the cylinder push plate fixing seat, the cylinder push plate fixing seat is connected to the control cylinder push plate, and a small guide column of the push plate is also installed on the cylinder push plate fixing seat. The small guide column of the push plate cooperates with the small guide sleeve of the push plate for guidance. After completing a stamping work, the control cylinder push plate uses the air pressure to control the cylinder to push the sheet vertically upward and push the sheet out after reciprocating motion.

[0014] In the above technical solution, as a further improvement of the present invention: after the rolled raw material is fed into the mold cavity, it is positioned by the positioning pins and the small material receiving seat provided on the unloading and returning plate, and qualified rotor punching sheets are punched out at one time, and all magnetic steel grooves, ventilation holes, and riveted circular holes are channels for waste materials to leak out.

[0015] The advantages of this utility model compared with the prior art are:

[0016] 1. The mold structure of the utility model is novel. In the past, two to three sets of molds were needed to complete the punching of a ZC permanent magnet motor rotor sector. The utility model uses convex and concave mold blocks and changes the convex and concave combination connection and positioning method and the edge leakage waste structure to achieve one set of molds to complete the punching of the rotor sector, thereby improving production efficiency.

[0017] 2. The positioning and floating method of the material strip punch in the mold cavity of the utility model is better than that of the old mold, that is, after the mold punching completes a process, the material strip punch floats and adopts Figure 3 The cylinder automatic material receiving method shown replaces manual material taking, improves production efficiency and avoids unsafe factors.

[0018] 3. The utility model automatically takes in materials for production, with high production efficiency. Waste cutters are distributed on the outside of the mold. After each blanking step is completed, the waste is automatically cut off, which greatly improves production efficiency.

[0019] 4. The upper and lower pads of the utility model are independently connected to the upper and lower mold bases with pins and screws, which is convenient for adjusting and installing the mold gap, and convenient for mold processing, assembly and after-sales maintenance.

[0020] 5. The utility model punches out qualified rotor punching sheets at one time. All magnetic steel slots, ventilation holes, and riveted circular holes are channels for waste materials to leak down. The waste material belt and the rotor product remain on the surface of the die. The feeder and the feeding belt are used to bring the product to the next workstation. The cylinder pushing device pushes the product to the upper surface of the belt. Then the robot enters the mold cavity to grab the product, or it is taken out manually. Finally, a punching is completed to cut off the waste corners. In this way, the arrangement of materials can not only ensure that the size of the punched rotor punching sheets is qualified and the concentricity is guaranteed, but also improve the material utilization rate, greatly save raw materials and reduce costs.

[0021] 6. During assembly, the utility model uses the light transmission method and the plug detection method to adjust the gap between the male and female mold pieces to 0.06-0.07 mm, which can reduce the friction between the punching sheet and the male and female molds, and is beneficial to improving the end face quality of the punching sheet and the life of the mold.

[0022] 7. The convex and concave mold blocks of the utility model are of combined structure, which is convenient for mold processing, assembly and after-sales maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a top view of the lower die base of the utility model;

[0024] Figure 2 This is the main view of the fully compound mold of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the cylinder pushing device of the utility model;

[0026] Figure 4 This is a bottom view of the upper die base of the utility model;

[0027] In the figure: 1, lower die seat, 2, lower pad, 3, spring pin, 4, male and female die blocks, 5, positioning block, 6, unloading and ejection plate, 7, small guide column of lower die, 8, lower die limit column, 9, receiving seat, 10, receiving plate, 11, lower die cutting knife, 12, lower die cutting knife seat, 13, small receiving plate, 14, small receiving seat, 15, positioning pin, 16, lower die rubber, 17, positioning key, 18, small positioning key, 19, positioning pin, 20, connecting bolt, 21, lower die unloading ejector rod, 22, upper die seat, 23, upper pad, 24, Punch fixing plate, 25, die, 26, pusher plate, 27, upper die plate, 28, upper die short sleeve, 29, punching die, 30, upper die long sleeve, 31, guide column, 32, upper die limit column, 33, guide sleeve, 34, upper die cutting knife holder, 35, upper die cutting knife, 36, upper die support column, 37, upper die small guide column, 38, die positioning key, 39, upper die spring pin, 40, cylinder, 41, cylinder connecting column, 42, cylinder pusher plate fixing seat, 43, pusher plate, 44, pusher plate small guide column, 45, pusher plate small guide sleeve. DETAILED DESCRIPTION

[0028] The following is a combination of the appended examples of the present invention Figure 1-4 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0029] (like Figures 1 to 4 (As shown) A fully complex mold for the rotor sector of a ZC permanent magnet motor, a set of molds completes the punching of the rotor sector, and all magnetic steel grooves, ventilation holes, and riveted circular holes are channels for waste materials to leak out; the mold has an upper mold base 22 and a lower mold base 1; a plurality of male and female mold blocks 4 are installed between the upper mold base 22 and the lower mold base 1; the plurality of male and female mold blocks 4 are spliced ​​together using small-piece splicing structure inserts; the male and female mold blocks 4 are positioned by positioning keys 17, small positioning keys 18, positioning pins 19, and guide pillars 31; the male and female mold blocks 4 are provided with a discharge plate 6 and a pusher plate 26; the outer rings of the lower mold base 1 and the upper mold base 22 are both equipped with guide pillars 31; the inner rings of the lower mold base 1 and the upper mold base 22 are both equipped with upper mold small guide pillars 37 and lower mold small guide pillars 7; the mold is equipped with a cylinder pushing device; the cylinder pushing device pushes the molded product to the upper surface of the material strip.

[0030] It should be noted that this mold enables fully complex stamping of rotor segments, meaning a single set of molds completes the entire process from raw material to finished product, eliminating the need for frequent mold changes or adjustments, significantly improving production efficiency. This integrated production method reduces waiting time and conversion costs during production, making the production process more compact and efficient. The mold design addresses waste material leakage from areas such as the magnetic steel slots, ventilation holes, and riveted holes. Through a rational structural layout, waste material is automatically discharged from the mold, reducing the need for manual waste removal and further improving production efficiency and automation. The small-piece male and female mold segments, using various positioning methods such as locating keys, small locating keys, locating pins, and guide posts, ensure precise fit between mold components, thus ensuring high-precision machining of the rotor segments. This small-piece male and female mold segment structure not only improves mold processing accuracy but also facilitates mold maintenance and replacement. If a segment becomes worn or damaged, only that segment needs to be replaced, without having to scrap the entire mold, reducing maintenance costs and replacement cycles. The pneumatic cylinder pusher automatically pushes the formed products onto the upper surface of the material belt, enabling automatic collection and delivery of the products. This design not only reduces workers' labor intensity but also improves the automation level of the production line, making the entire production process smoother and more efficient.

[0031] In the above embodiment, as a further improved embodiment of the present utility model: a lower pad 2 is provided on the lower die base 1, and an upper pad 23 is provided on the upper die base 22; the male and female die blocks 4 are fixed to the upper and lower pads (23, 2) by positioning keys 17, small positioning keys 18, and positioning pins 19, so as to facilitate the adjustment of the mold gap; a lower die limiting column 8 and an upper die limiting column 32 are installed between the lower die base 1 and the upper die base 22.

[0032] Among them, the male and female mold blocks 4 are fixed between the upper and lower pads by precise positioning devices such as positioning keys 17, small positioning keys 18, and positioning pins 19. This design makes the adjustment of the mold gap more accurate and convenient. By fine-tuning these positioning devices, the gap between the male and female molds can be accurately controlled, thereby ensuring that the stamped rotor sectors have extremely high dimensional accuracy and shape consistency. The lower pad 2 and the upper pad 23 serve as the support base of the male and female mold blocks 4, which can effectively disperse the impact force during the stamping process, reduce the vibration and deformation of the mold, and thus improve the stability and durability of the mold. This design helps to extend the service life of the mold and reduce production costs. The installation of the lower mold limit column 8 and the upper mold limit column 32 ensures the precise alignment of the upper mold base and the lower mold base during the mold closing process.

[0033] In the above embodiment, as a further improved embodiment of the present invention, a waste cutter is provided on the outside of the mold, and the waste is automatically cut off after each punching step is completed; the waste cutter includes a lower die cutter 11 and a lower die cutter seat 12.

[0034] After each punching step, a scrap cutter automatically cuts the scrap, enabling immediate separation and discharge. This automated process reduces the need for manual intervention, improves production efficiency, and reduces operator workload. Automated scrap handling ensures continuous production and prevents scrap accumulation from disrupting subsequent steps. This allows the mold to operate continuously and stably, improving the efficiency and stability of the entire production line. Automatic scrap cutting and discharge helps maintain a clean and orderly production environment, minimizing potential damage to production equipment and molds while also enhancing safety and hygiene in the production workshop. The scrap cutter's precise cutting reduces scrap residue and burrs, improving the edge quality and overall precision of the rotor segments. The scrap cutter's design can be adjusted and optimized to meet different production requirements and rotor segment specifications. This flexibility and adaptability allows the mold to be used in a variety of production scenarios and product specifications, enhancing its versatility and cost-effectiveness.

[0035] In the above-mentioned embodiment, as a further improvement of the present invention, the male and female mold pieces 4 are further provided with positioning pins 15, positioning blocks 5, and a lower mold rubber 16. The positioning pins 15 and positioning blocks 5 work together to secure the male and female mold pieces 4, ensuring precise alignment of the mold during the stamping process. This precise positioning mechanism reduces the risk of mold misalignment during high-speed or heavy-load stamping, thereby improving product processing accuracy and consistency. The coordination of the positioning pins and positioning blocks ensures that the mold maintains a stable structure, maintaining excellent performance even in long-term or high-intensity production environments. The positioning pins and positioning blocks help distribute the impact force and stress applied to the mold during the stamping process, reducing the risk of damage caused by uneven force. This design extends the mold's service life and reduces production costs. The lower mold rubber 16 acts as a buffer, absorbing some of the impact energy during the stamping process and further protecting the mold structure from damage. It also provides a degree of sealing, preventing debris or lubricant generated during the stamping process from entering the mold and affecting its accuracy and stability. The automatic reset function of the lower mold rubber 16 also reduces the operator's workload and improves the automation level of the production line. The integrated design of the positioning pins, positioning blocks and lower mold rubber components simplifies the installation, commissioning and maintenance processes of the mold.

[0036] In the above embodiment, as a further improvement of the present invention, a lower die rubber 16 is provided on the side of the lower die base 1 near the lower die ejector pin 21. The lower die rubber 16 acts as an elastic element, providing cushioning and shock absorption during the stamping process. When the punch contacts the material and applies impact force, the lower die rubber absorbs some of the impact energy, reducing the direct impact on the die and thus protecting the die structure from damage. During the stamping process, the material may deform or be damaged by the sudden impact force. The presence of the lower die rubber mitigates this deformation process, reducing the risk of material damage. It also prevents direct contact between the die and the material, reducing wear and scratches, and extending the service life of the die. After stamping is completed, the lower die ejector pin 21 is responsible for ejecting the stamped part from the die. The elasticity of the lower die rubber 16 assists this process, making it easier for the stamped part to be released from the die, reducing problems such as material jamming and strain. It also provides a certain amount of friction, helping to control the movement trajectory of the stamped part and ensuring a smooth unloading process. Due to the cushioning and shock absorption effect of the lower mold rubber, the vibration and noise of the mold during the stamping process will be effectively suppressed, thereby improving the comfort of the production environment. As a replaceable component, the lower mold rubber has a certain degree of adaptability and flexibility.

[0037] In the above embodiment, as a further improved embodiment of the present utility model: the upper mold base 22 is provided with several upper mold long sleeves 30; the upper mold long sleeves 30 are installed in the upper mold hitting plate 27; the sleeve guide column is connected to the push plate 26; the sleeve guide column is guided and connected to the upper mold long sleeve 30.

[0038] The guiding connection between the upper mold long sleeve 30 and the sleeve guide pins ensures precise guidance of the pusher plate 26 during movement. Serving as a support and guide for the pusher plate 26, the upper mold long sleeve 30 can withstand the various forces and moments during the push operation, thereby maintaining the stability and rigidity of the mold structure. The guiding connection between the sleeve guide pins and the upper mold long sleeve 30 ensures smooth and stable movement of the pusher plate 26, optimizing the push operation. The design of the upper mold long sleeve 30 and sleeve guide pins can be adjusted and replaced to meet different production requirements and mold specifications.

[0039] In the above-mentioned embodiment, as a further improved embodiment of the present invention, the upper die base 22 is provided with a short upper die sleeve 28, which is connected to the upper die plate 27, and the upper die base 22 is connected to the upper pad 23. The short upper die sleeve 28, as the component connecting the upper die plate 27 and the upper die base 22, enhances the overall structural stability of the die. It can withstand the various forces and moments generated during the stamping process, ensuring that the die maintains a stable structural form even under high-speed, high-load conditions, thereby reducing production problems caused by vibration or deformation. Although the short upper die sleeve 28 itself does not directly participate in the ejection or unloading process, its close connection with the upper die plate 27 helps ensure precise guidance and positioning of the die during the stamping process. This precision is crucial for improving product processing accuracy and consistency, helping to reduce scrap and increase production efficiency. The connection between the short upper die sleeve 28 and the upper die plate 27 optimizes the force distribution of the die during the stamping process. This design helps reduce stress concentration in localized areas of the mold, lowering the risk of damage due to uneven stress. It also improves the mold's load-bearing capacity and service life. The connection between the upper mold short sleeve 28, the upper mold striking plate 27, the upper mold base 22, and the upper backing plate 23 is relatively simple and clear, helping to simplify the mold's overall structure. The design of components such as the upper mold short sleeve 28 can be adjusted and replaced based on different production requirements and mold specifications.

[0040] In the above embodiment, as a further improved embodiment of the present invention, it also includes a guide sleeve 33, on which a guide sleeve pressure plate is installed. The guide sleeve pressure plate can tightly fix the guide sleeve to prevent it from displacement or loosening during operation. This stable fixing method helps to ensure the positioning accuracy of the mold in processes such as stamping or injection molding, thereby improving the processing accuracy and consistency of the product. The guide sleeve pressure plate firmly fixes the guide sleeve to the mold by applying pressure, thereby enhancing the overall stability of the mold. This stability is particularly important in high-speed and high-load working environments. It helps to reduce vibration and deformation of the mold and extend the service life of the mold. The presence of the guide sleeve pressure plate can reduce direct contact and friction between the guide sleeve and other parts of the mold, thereby reducing the risk of wear and damage. The guide sleeve pressure plate is usually designed to be easy to install and disassemble, which makes maintenance and replacement of the mold more convenient and quick. Since the guide sleeve pressure plate can ensure the stability and positioning accuracy of the guide sleeve, it reduces production interruptions caused by mold failure or adjustment.

[0041] In the above embodiment, as a further improved embodiment of the utility model: the cylinder pushing device includes a cylinder 40, the cylinder 40 is fixed on the lower die base 1, the cylinder 40 is connected to the cylinder connecting column 41, the other end of the cylinder connecting column 41 is connected to the cylinder push plate fixing seat 42, the cylinder push plate fixing seat 42 is connected to the control cylinder push plate 43, and the cylinder push plate fixing seat 42 is also equipped with a small push plate guide column 44, the push plate small guide column 44 cooperates with the push plate small guide sleeve 45 for guidance. After completing a stamping work, the control cylinder push plate 43 uses air pressure to control the cylinder 40 to push the sheet vertically upward and push the sheet out after reciprocating motion.

[0042] Among them, the movement of the cylinder is automatically controlled by air pressure, which realizes the automatic pushing and pushing out of the sheet, reduces manual intervention, and significantly improves production efficiency. Automated operation reduces dependence on operating workers, reduces the labor intensity of workers, and reduces production delays and errors caused by human factors. The cylinder push plate fixing seat 42 and the small push plate guide pin 44 thereon cooperate with the small push plate guide sleeve 45 to guide and ensure the precise positioning of the cylinder push plate 43 during the pushing process of the sheet, avoiding the displacement or damage of the sheet. The design of the guide device makes the cylinder more stable during movement, reduces vibration and impact, and improves the processing accuracy and surface quality of the product. The cylinder pushing device is not only suitable for the pushing out of the permanent magnet motor rotor sector, but can also be adjusted and optimized as needed to meet the production requirements of products of different specifications and shapes. By precisely controlling the movement and pushing force of the cylinder, damage and deformation of the sheet during the pushing process are avoided, and the defective rate is reduced.

[0043] In the above-mentioned embodiment, as a further improvement of the present invention, after the rolled raw material is fed into the mold cavity, it is positioned by the positioning pins 15 and the small material receiving seat 14 provided on the unloading and rejecting plate 6, resulting in a single punched-out rotor lamination. All magnetic steel slots, ventilation holes, and riveted holes serve as channels for waste material to escape. This design allows the rolled raw material to undergo all necessary blanking and forming steps within the mold in one go, eliminating the need for multiple clamping or adjustments, significantly improving production efficiency. By eliminating intermediate steps in the production process, such as multiple punching operations and waste material handling, the overall production cycle is shortened. The precise design of the positioning pins 15 and the small material receiving seat 14 ensures the precise positioning of the raw material within the mold, thereby guaranteeing the dimensional accuracy and shape consistency of the rotor lamination. Waste material from all magnetic steel slots, ventilation holes, and riveted holes can escape smoothly, reducing waste accumulation and residue within the mold and further improving product cleanliness and overall quality. The highly automated production process reduces manual intervention and the skill requirements for operators, thereby reducing labor costs. Precise blanking and forming reduce raw material waste, improve material utilization, and lower production costs. This mold design can adapt to the production needs of rotor punchings of different specifications and shapes, and can achieve rapid production changes by adjusting the position of the positioning pins and small material receiving seat.

[0044] The working principle of the present invention is as follows: first, the rolled raw material is fed into the mold cavity. The unloading and stripping member 6 is positioned using the positioning pins 15 and the small material receiving seat 14, allowing qualified rotor punchings to be punched out in one go. All magnetic steel slots, ventilation holes, and riveted circular holes serve as channels for waste material to escape. The waste material strip and the rotor product remain on the surface of the die, and the product is brought to the next workstation using a feeder and a feeding strip. A cylinder pusher pushes the product onto the upper surface of the strip. A robot then enters the mold cavity to grab the product, or it can be removed manually. Finally, a single punching operation is completed to cut off the scrap material. This material discharge method not only ensures that the punched rotor punchings meet the required dimensions and concentricity, but also improves material utilization, significantly saving raw materials and reducing costs. During assembly, the gap between the male and female die segments is adjusted to 0.06-0.07 mm using the light transmission method and the plug-in detection method. This reduces friction between the punching sheet and the male and female dies, while also improving the quality of the punching sheet end face and the life of the mold.

[0045] From the above description, it can be found that the mold structure of the utility model is novel. In the past, two to three sets of molds were needed to complete the punching of a model of ZC permanent magnet motor rotor sector. The utility model uses convex and concave mold blocks and changes the convex and concave combination connection and positioning method and the edge waste leakage structure to achieve a set of molds to complete the punching of rotor sector, thereby improving production efficiency.

[0046] The method of positioning and floating the material strip punch in the mold cavity of the utility model is better than that of the old mold, that is, after the mold punching completes a process, the material strip punch floats, and adopts the following method: Figure 3 The cylinder automatic material receiving method shown replaces manual material taking, improves production efficiency and avoids unsafe factors.

[0047] The utility model has the advantages of automatic material receiving and production, high production efficiency, and waste cutters are distributed on the outside of the mold. Every time a blanking step is completed, the waste is automatically cut off, which greatly improves the production efficiency.

[0048] The upper and lower pads of the utility model are independently connected to the upper and lower die bases by pins and screws, which is convenient for adjusting and installing the die gap and convenient for die processing, assembly and after-sales maintenance.

[0049] The utility model punches out qualified rotor punching sheets at one time. All magnetic steel slots, ventilation holes and riveted circular holes are channels for waste materials to leak down. The waste material belt and the rotor product are left on the surface of the die. The product is brought to the next workstation by means of a feeder and a feeding material belt. The cylinder pushing device pushes the product to the upper surface of the material belt. Then a manipulator enters the die cavity to grab the product, or it is taken out manually. Finally, a punching is completed to cut off the waste corners. In this way, the arrangement of materials can not only ensure that the size of the punched rotor punching sheets is qualified and the concentricity is guaranteed, but also improve the material utilization rate, greatly save raw materials and reduce costs.

[0050] During assembly, the utility model uses the light transmission method and the plug detection method to adjust the gap between the male and female mold blocks 4 to 0.06-0.07 mm, which can reduce the friction between the punching sheet and the male and female molds, and is conducive to improving the end surface quality of the punching sheet and the life of the mold.

[0051] The male and female mold blocks 4 of the utility model are of a combined structure, which is convenient for mold processing, assembly and after-sales maintenance.

[0052] In summary, the ZC permanent magnet motor rotor sector full-complex mold of the present invention is achieved by dividing the original male and female molds into three male and female mold blocks 4, which are fixedly connected to the lower pad 2 with screws, pins, and positioning keys; the upper and lower pads are independently connected to the upper and lower die bases with pins and screws, and then the male and female mold blocks 4 are respectively connected to the upper and lower pads; combined with the cylinder pushing device, it can significantly improve production efficiency and ensure operational safety.

[0053] It should be understood that although this specification is described according to one embodiment, this embodiment does not only include one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in this embodiment can also be appropriately arranged and combined to form other embodiments that can be understood by those skilled in the art.

[0054] The above preferred embodiments are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention. It should be noted that the components and materials used in the above embodiments are commercially available unless otherwise specified.

Claims

1. A fully compound mold for a ZC permanent magnet motor rotor sector, characterized by: A set of molds completes the punching of rotor sector pieces; all magnetic steel slots, ventilation holes, and riveted circular holes are channels for waste materials to leak down; the mold comprises an upper mold base (22) and a lower mold base (1); a plurality of male and female mold pieces (4) are installed between the upper mold base (22) and the lower mold base (1); the plurality of male and female mold pieces (4) are spliced ​​together using small piece splicing structure inserts; the male and female mold pieces (4) are fixed with a positioning key (17), a small positioning key (18), and a positioning pin (19). , guide pillars (31) to ensure the position; the male and female mold blocks (4) are provided with a discharge plate (6) and a push plate (26); the outer rings of the lower mold base (1) and the upper mold base (22) are both installed with guide pillars (31); the inner rings of the lower mold base (1) and the upper mold base (22) are both installed with upper mold small guide pillars (37) and lower mold small guide pillars (7); the mold is equipped with a cylinder pusher; the cylinder pusher pushes the molded product to the upper surface of the material belt.

2. The ZC permanent magnet motor rotor sector full duplex mold according to claim 1, characterized in that: The lower die base (1) is provided with a lower pad (2), and the upper die base (22) is provided with an upper pad (23); the male and female die blocks (4) are fixed to the upper and lower pads (23, 2) by means of a positioning key (17), a small positioning key (18), and a positioning pin (19), thereby facilitating the adjustment of the die gap; a lower die limiting column (8) and an upper die limiting column (32) are installed between the lower die base (1) and the upper die base (22).

3. The ZC permanent magnet motor rotor sector full duplex mold according to claim 1, characterized in that: A waste cutter is provided on the outside of the mold, and the waste is automatically cut off after each punching step is completed; the waste cutter includes a lower die cutter (11) and a lower die cutter seat (12).

4. The ZC permanent magnet motor rotor sector full duplex mold according to claim 1, characterized in that: The male and female mold pieces (4) are also provided with positioning pins (15), positioning blocks (5), and lower mold rubber (16).

5. The ZC permanent magnet motor rotor sector full compound mold according to claim 1, characterized in that: A lower die rubber (16) is provided on one side of the lower die base (1) close to the lower die unloading ejector rod (21).

6. The ZC permanent magnet motor rotor sector full duplex mold according to claim 1, characterized in that: The upper die base (22) is provided with a plurality of upper die long sleeves (30); the upper die long sleeves (30) are installed in the upper die punching plate (27); the sleeve guide pin is connected to the push plate (26); the sleeve guide pin is connected to the upper die long sleeve (30) in a guiding manner.

7. The ZC permanent magnet motor rotor sector full duplex mold according to claim 1, characterized in that: An upper die short sleeve (28) is provided on the upper die seat (22), the upper die short sleeve (28) is connected to the upper die punching plate (27), and the upper die seat (22) is connected to the upper pad (23).

8. The ZC permanent magnet motor rotor sector full duplex mold according to claim 1, characterized in that: It also includes a guide sleeve (33); a guide sleeve pressing plate is installed on the guide sleeve (33).

9. The ZC permanent magnet motor rotor sector full duplex mold according to claim 1, characterized in that: The cylinder pushing device includes a cylinder (40), which is fixed on the lower die base (1). The cylinder (40) is connected to the cylinder connecting column (41), and the other end of the cylinder connecting column (41) is connected to the cylinder push plate fixing seat (42). The cylinder push plate fixing seat (42) is connected to the control cylinder push plate (43). A small push plate guide column (44) is also installed on the cylinder push plate fixing seat (42). The small push plate guide column (44) and the small push plate guide sleeve (45) cooperate to guide. When a stamping work is completed, the control cylinder push plate (43) pushes the sheet vertically upward using the air pressure control cylinder (40) and pushes out the sheet after reciprocating motion.

10. The ZC permanent magnet motor rotor sector full duplex mold according to claim 1, characterized in that: After the rolled raw material is fed into the mold cavity, it is positioned by the positioning pins (15) and the small material receiving seat (14) provided on the unloading and returning plate (6), and qualified rotor punching sheets are punched out at one time, and all the magnetic steel grooves, ventilation holes, and riveted circular holes are channels for waste materials to leak down.

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