High-speed stamping progressive die for motor cover plate

Abstract

The utility model discloses a high-speed stamping progressive die for a motor cover plate. The high-speed stamping progressive die comprises an upper die assembly, a lower die assembly, a guide hole die assembly, a semi-cutting die assembly, a forming die assembly and a blanking die assembly, wherein the guide hole die assembly, the semi-cutting die assembly, the forming die assembly and the blanking die assembly are sequentially arranged in the conveying direction of a material belt. The half-cutting die assembly is used for pressing an initial material consistent with a product in appearance on the material belt, and the initial material sinks relative to the material belt, so that the connecting thickness of the initial material and the material belt is smaller than the thickness of the material belt; the forming die assembly is used for processing a forming part on the initial material, so that the initial material becomes a finished material; and the blanking die assembly is used for pressing the finished material, so that the finished material is separated from the material belt. According to the utility model, integrated blanking (namely half blanking) is adopted, so that the dimensional accuracy and the planeness of an outer circle are greatly improved, the matching gap with a shell can be reduced, the automatic production is efficiently completed, and the working efficiency and the production benefit are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -speed punch press technical field especially, relate to a motor cover plate high -speed punch press succession mould. BACKGROUND

[0002] High -speed punch press technology is the high -tech of the equipment, mould, material and process etc. with the body. Compared with ordinary punch press, the speed of high -speed punch press is in hundreds to thousands per minute, it is an advanced manufacturing technology of good quality, high efficiency, suitable for large -scale production, low cost, and its application in the industry field such as electronics, electric appliances, automobile and household appliances is more and more widely.

[0003] The characteristics of high -speed punch press technology are: (1) precision. The static cumulative error precision of mould is 0.002~0.005mm, the precision of single part is 0.001~0.002mm, the precision of workpiece is ±0.02mm, and the general tolerance is 0.003~0.005mm. (2) high speed. Generally, the punch press frequency is 800~1500 per minute.

[0004] BYJ claw pole type step-down motor is widely used in air conditioner air door motor, monitor, stage lighting and other fields. Before 2005, its manufacturers mainly concentrated in Japanese SANKYO, SANYO, MABUCHI and other Japanese manufacturers. After 2005, domestic manufacturers gradually formed production scale and became the main force in the market. Due to the increase of motor orders, production line expansion and other factors, the market demand for motor components increases, which requires the increase of the supply of stamping parts. Due to the restriction of production site, equipment and personnel, the existing production scale cannot solve the problem of insufficient production capacity.

[0005] The traditional punch press progressive die stamping mode is as shown in Figure 2 The product shape adopts step-by-step cutting method and is cut out by three kinds of moulds, and finally the product is left on the lower die plate and is blown out of the lower die by blowing. Such product has step-by-step cumulative error, so that the product shape size and flatness size change obviously, and if the product is not blown out, the die is easily damaged.

[0006] Secondly, in the traditional way, the product shape needs to be formed, so the shape of the forming part needs to be cut out first, which is equivalent to cutting the shape first, then forming, and then cutting the shape again. That is, the product shape is cut out by three knives, as shown in Figure 1 The first knife adopts No. 1 mould 8, the second knife adopts No. 2 mould 9, and the third knife adopts No. 3 mould 10. The forming step is carried out between the first knife and the second knife. Therefore, the traditional stamping step is complex, more stamping stations need to be set, and the equipment cost is higher. INVENTION CONTENTS

[0007] In order to solve the technical problems that the stamping progressive die of the prior art adopts the step-by-step cutting shape mode to realize product forming, the stamping steps are complex, and the product shape size, flatness size and the like are prone to change significantly, the utility model provides a motor cover plate high-speed stamping progressive die to solve the above problems.

[0008] The utility model discloses a motor cover plate high-speed stamping progressive die, including upper die assembly, lower die assembly and the guide hole mould assembly, half cutting mould assembly, forming mould assembly and blanking mould assembly that arrange in proper order along the conveying direction of material belt, the guide hole mould assembly sets up multiple, is used for processing the through hole corresponding with the product on the material belt, the half cutting mould assembly is used for extruding the initial material on the material belt with the product shape consistent, and initial material sinks relative to the material belt, thereby making the connection thickness of initial material and material belt less than the thickness of material belt, the forming mould assembly processes the forming part on initial material, thereby making initial material become finished material, the blanking mould assembly is used for pressing down finished material, makes finished material and material belt separate.

[0009] Further, the half cutting mould assembly includes a half cutting punch located in the upper die assembly, a half cutting recess located in the lower die assembly, a half cutting ejector pin, and a half cutting spring. The half cutting punch is a solid structure consistent with the product shape. The half cutting recess is adapted to accommodate the initial material. The half cutting ejector pin is located in the half cutting recess, and the half cutting spring is located at the bottom of the half cutting ejector pin.

[0010] Further, the half cutting ejector pin has a limiting boss protruding radially outward. The half cutting recess has an annular groove adapted to the limiting boss. The height of the annular groove is greater than the height of the limiting boss.

[0011] Further, the ratio of the connection thickness of the initial material and the material belt to the thickness of the material belt is 1 / 3 to 1 / 2.

[0012] Further, the blanking mould assembly includes a blanking punch located in the upper die assembly and a blanking groove passing through the lower die assembly from top to bottom. The blanking punch is shaped with the finished material.

[0013] Further, the outer shape size of the blanking punch is slightly smaller than the outer shape size of the finished material.

[0014] Further, the upper die assembly includes an upper die seat, an upper cushion plate, an upper fixed plate, an upper unloading cushion plate, and an upper unloading plate arranged in sequence from top to bottom. The upper die seat, the upper cushion plate, and the upper fixed plate are fixedly connected. The upper unloading cushion plate and the upper unloading plate are fixedly connected. The half cutting punch and the blanking punch are fixed on the upper fixed plate. The upper die seat and the upper cushion plate are provided with a push spring. The push spring is connected with a push rod between the upper unloading cushion plate.

[0015] Further, the lower die assembly comprises a lower fixed plate, a lower cushion plate and a lower die seat fixed in sequence from top to bottom, the half-cut concave die is located on the lower fixed plate, the half-cut spring is located in the lower die seat, and the half-cut top rod is connected with the half-cut spring through the half-cut lower top rod penetrating through the lower cushion plate.

[0016] Further, the lifting spring and the lifting rod located on the top of the lifting spring are arranged in the lower die assembly, and the lifting rod is suitable for lifting the material belt.

[0017] Further, the length of the blanking punch is greater than the length of the half-cut punch.

[0018] The beneficial effects of the utility model are:

[0019] (1) The utility model adopts integral blanking (half blanking) to greatly improve the size precision and flatness of the motor cover plate, reduce the fitting gap with the shell, efficiently complete automatic production, improve work efficiency and production benefit, reduce the error rate in manual operation, greatly reduce the cost, greatly reduce the scrap rate, and be more conducive to producing high-quality motors.

[0020] (2) The utility model improves the production efficiency of the existing motor cover plate parts by more than 100% under the premise of ensuring product quality, and accumulates high-speed stamping die design experience. DRAWINGS

[0021] The utility model will be further described below in combination with the drawings and examples.

[0022] Figure 1 It is a traditional motor cover plate stamping process schematic diagram;

[0023] Figure 2 It is a half-cut position composition schematic diagram in the traditional motor cover plate stamping process;

[0024] Figure 3 It is a structure schematic diagram of the specific implementation mode of the motor cover plate high-speed stamping continuous die of the utility model;

[0025] Figure 4 It is a stamping schematic diagram of the half-cut die assembly in the utility model;

[0026] Figure 5 It is a stamping schematic diagram of the forming die assembly in the utility model;

[0027] Figure 6 It is a stamping schematic diagram of the blanking die assembly in the utility model;

[0028] Figure 7 It is a state schematic diagram of the half-cut die assembly in the continuous die when the continuous die is closed.

[0029] In the diagram, 1. Upper mold assembly, 101. Upper mold base, 102. Upper backing plate, 103. Upper fixing plate, 104. Upper stripper plate, 105. Upper stripper plate; 2. Lower mold assembly, 201. Lower fixing plate, 202. Lower backing plate, 203. Lower mold base; 3. Guide hole station, 4. Small hole station, 5. Flipping hole station, 6. Initial material, 7. Finished material, 8. Mold No. 1, 9. Mold No. 2. 10. Mold No. 3; 11. Support lug; 12. Push spring; 13. Push rod; 14. Lifting spring; 15. Lifting rod; 16. Half-cut punch; 17. Half-cut die; 1701. Annular groove; 18. Half-cut ejector pin; 1801. Limiting boss; 19. Half-cut spring; 20. Blanking punch; 21. Blanking groove; 22. Material strip; 23. Half-cut lower ejector pin; 24. Forming mold assembly. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] like Figure 3 As shown, a high-speed stamping continuous die for a motor cover includes an upper die assembly 1, a lower die assembly 2, and guide hole die assembly, half-cut die assembly, forming die assembly 24, and blanking die assembly arranged sequentially along the conveying direction of the material strip 22. Multiple guide hole die assemblies are provided for processing through holes corresponding to the product on the material strip 22. Each guide hole die assembly corresponds to one workstation. In a specific embodiment of this invention, there are five guide hole die assemblies, respectively arranged at one guide hole workstation 3, three small hole workstations 4, and one flipping hole workstation 5. The guide hole workstation 3 is used to process guide holes, the small hole workstations 4 are used to process corresponding holes on the product, and the flipping hole workstation 5 is used to fold over the processed small holes, i.e., to process holes of different depths. The die structure of the guide hole workstation 3 is prior art and will not be described in detail here.

[0032] The semi-cutting die assembly is used to press out an initial material 6 with the same shape as the product onto the strip 22, and the initial material 6 is recessed relative to the strip 22, so that the connection thickness between the initial material 6 and the strip 22 is less than the thickness of the strip 22. Figure 4 and Figure 7As shown, the initial material is not separated from the material belt 22, but only moves a certain distance downward. If the connection thickness of the initial material 6 and the material belt 22 is too large, a larger blanking pressure is required, which is easy to cause the finished material 7 to be deformed and damaged. If the connection thickness of the initial material 6 and the material belt 22 is too small, the material may be automatically separated from the material belt 22 during processing, thereby causing the mold to be damaged. Therefore, in the preferred embodiment, the ratio of the connection thickness of the initial material 6 and the material belt 22 to the thickness of the material belt 22 is 1 / 3 to 1 / 2.

[0033] The forming die assembly 24 processes the forming part on the initial material 6, so that the initial material 6 becomes the finished material 7. Figure 5 As shown, the forming die assembly 24 processes the inner ring of the initial material 6, and does not contact the two ears 11 of the initial material 6, so that the two ears 11 are still connected with the material belt 22 after forming. At this time, the finished material 7 and the material belt 22 are connected only through the ears 11, and the connection strength is low. The blanking die assembly is used to press down the finished material 7, so that the finished material 7 is separated from the material belt 22. The forming method of the forming die assembly 24 is the same as the traditional method, and the mold structure used is also the same, so the structure will not be described in detail.

[0034] The utility model mainly improves the stamping and blanking mode, so that the half-cutting die assembly and the blanking die assembly are different. Therefore, the half-cutting die assembly and the blanking die assembly and the connection relationship between the upper die assembly 1 and the lower die assembly 2 will be described below.

[0035] Upper die assembly 1:

[0036] As shown in the figure, Figure 3 The upper die assembly 1 usually includes an upper die seat 101, an upper pad 102, an upper fixed plate 103, an upper unloading pad 104 and an upper unloading plate 105 arranged in sequence from top to bottom, the upper die seat 101, the upper pad 102 and the upper fixed plate 103 are fixedly connected, the upper unloading pad 104 and the upper unloading plate 105 are fixedly connected, the upper die seat 101 and the upper pad 102 are provided with a push spring 12, and the push spring 12 is connected with the upper unloading pad 104 through a push rod 13. The push rod 13 connects the upper unloading pad 104 with the structure of the upper die assembly 1 above it, and the push spring 12 enables the upper fixed plate 103 and the upper unloading pad 104 to move relative to each other, so that the male die on each station can be hidden in the upper unloading plate 105 in the open mold state. At the same time, the upper unloading plate 105 also has a buffering effect, which avoids the contact between the material belt 22 and the male die when the material belt 22 is not completely attached to the lower die assembly 2, thereby avoiding the deviation of the processing position.

[0037] Lower die assembly 2:

[0038] As shown in the figure, Figure 3As shown, the lower die assembly 2 generally includes a lower fixed plate 201, a lower cushion plate 202 and a lower die seat 203 fixed in sequence from top to bottom. In order to be able to transport the material belt 22, the lower die assembly 2 is further provided with a material lifting spring 14 and a material lifting rod 15 located at the top of the material lifting spring 14, and the material lifting rod 15 is adapted to lift the material belt 22. When the mold is closed, the material lifting rod 15 is retracted into the lower die assembly 2 under the pressure of the upper die assembly 1, and when the mold is opened, the material lifting spring 14 lifts the material lifting rod 15, and the material lifting rod 15 makes the material belt 22 away from the surface of the lower die assembly 2, facilitating the forward transportation of the material belt 22.

[0039] The half-cut die assembly can be but not limited to the following structure:

[0040] As shown in Figure 3 and Figure 7 , including a half-cut punch 16 located in the upper die assembly 1, a half-cut recess 17 located in the lower die assembly 2, a half-cut ejector pin 18 and a half-cut spring 19, the half-cut punch 16 is a solid structure consistent with the shape of the product, when the upper die assembly 1 is pressed down, the half-cut punch 16 can directly press down the area of the material belt 22 it covers to form the initial material 6, the half-cut recess 17 is adapted to accommodate the initial material 6, the half-cut ejector pin 18 is located in the half-cut recess 17, used to resist the initial material 6 from below, to avoid the initial material 6 from falling or tilting, the half-cut spring 19 is located at the bottom of the half-cut ejector pin 18, the half-cut spring 19 makes the half-cut ejector pin 18 have up and down displacement, which can shrink with the downward pressure of the half-cut punch 16, so as to stably clamp the initial material 6 between the half-cut ejector pin 18 and the half-cut punch 16.

[0041] In terms of installation, the half-cut punch 16 is fixed at the bottom of the fixed plate, the half-cut recess 17 is a notch on the lower fixed plate 201, and the half-cut spring 19 is located in the lower die seat 203. In order to limit the lower limit position of the half-cut ejector pin 18 movement, it is preferred that the half-cut ejector pin 18 is connected with the half-cut spring 19 through a half-cut lower ejector pin 23 passing through the lower cushion plate 202, and the diameter of the half-cut lower ejector pin 23 is smaller than that of the half-cut ejector pin 18. Therefore, the notch diameter on the lower cushion plate 202 is smaller than the notch diameter of the half-cut recess 17, so that the half-cut ejector pin 18 can be limited in the half-cut recess 17.

[0042] In order to limit the upward movement distance of the half-cut ejector pin 18, as a preferred, the half-cut ejector pin 18 has a limiting boss 1801 protruding radially outward, the half-cut recess 17 has an annular groove 1701 adapted to the limiting boss 1801, and the height of the annular groove 1701 is greater than the height of the limiting boss 1801. The height space of the annular groove 1701 is the maximum amplitude of the upward and downward movement of the half-cut ejector pin 18. It is preferred that the half-cut ejector pin 18 is flush with the upper surface of the lower fixed plate 201 at the highest position.

[0043] The blanking die assembly can be but not limited to the following structure:

[0044] As Figure 3 shown, including the blanking punch 20 and located in the upper die assembly 1 blanking groove 21 located by the upper and lower die assembly 2 through, blanking punch 20 with finished material 7 profile (as Figure 6 shown). The profile refers to the same shape, size slightly different, since blanking punch 20 need to eject finished material 7, therefore, the preferred blanking punch 20 size slightly smaller than the size of the finished material 7 profile.

[0045] In the installation, blanking punch 20 can be as half-cut punch 16, installed in the bottom of the upper fixed plate 103, and then through the upper discharge pad plate 104 and the upper discharge plate 105, since half-cut punch 16 only down pressure part of the thickness of the tape 22 height, blanking punch 20 need to be pressed more than the height of the tape 22 thickness, therefore, the length of the blanking punch 20 is greater than the length of the half-cut punch 16.

[0046] The motor cover plate high speed stamping continuous die first passes through a plurality of guide hole die assembly in front of the first punch guide hole, and some products on the need for hole, pre-punch, and then to the half-cut die assembly at the back of the half-cut, half-cut, the initial material 6 on the half-cut is formed, because the initial material 6 of the half-cut is less than the part of the tape 22, after the forming is completed, the finished material 7 part place (the arc part beside the ear 11) will be separated from the tape 22, but the two ears 11 are still connected with the tape 22, the other place is separated from the tape 22, even so, it does not affect the feeding of the tape 22. When the tape 22 reaches the position of the blanking die assembly, as long as the remaining part of the finished material 7 connected with the tape 22 is separated from the tape 22, the product is completed. The product is punched into the blanking groove 21 from the tape 22 by using the blanking punch 20, and the product is taken out from the blanking groove 21.

[0047] The utility model adopts integral blanking, that is, half-cut blanking, and the profile is completed by one-time stamping. Finally, the product is directly taken out from the blanking groove 21. Compared with the traditional method of three-step stamping by using three kinds of molds, the mold type used in the utility model is less, the equipment cost is low, and the dimensional accuracy of the product profile is greatly improved because there is no step accumulation error. Moreover, such a discharging mode is very efficient, which makes the production efficiency of the motor cover plate parts rise from the original 120pcs / min to 300pcs / min, which is more than 100%. The product is not easy to stay in the mold and is not easy to be pressed. The problem of short service life of the mold parts caused by high-speed stamping is solved.

[0048] In the description of the utility model, need understanding is, the term "length", "thickness", "upper", "lower", "inner", "outer" and so on indicate the orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation structure and operation, therefore can not be understood as a limitation on the utility model.

[0049] In this specification, the illustrative representations of the terms do not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments in a suitable manner.

[0050] The above is the inspiration of the ideal embodiment according to the utility model, and through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A high speed stamping progressive die for a motor cover panel, characterized by: The die set comprises an upper die assembly (1), a lower die assembly (2), a guide hole die assembly, a half-cut die assembly, a forming die assembly (24) and a blanking die assembly arranged in sequence along the conveying direction of the material strip (22); The guide hole die assembly is provided with a plurality of guide hole die assemblies for machining through holes corresponding to the product on the material strip (22); The half-cut die assembly is used for pressing out an initial material (6) consistent with the shape of the product on the material strip (22), and the initial material (6) is sunken relative to the material strip (22), so that the connection thickness of the initial material (6) and the material strip (22) is less than the thickness of the material strip (22); The forming die assembly (24) is used for machining a forming part on the initial material (6), so that the initial material (6) becomes a finished material (7); The blanking die assembly is used for pressing down the finished material (7) to separate the finished material (7) from the material strip (22).

2. The high speed power pack progressive die for motor cover plate as claimed in claim 1 wherein: The half-cut die assembly comprises a half-cut punch (16) located in the upper die assembly (1), a half-cut recess (17) located in the lower die assembly (2), a half-cut ejector pin (18) and a half-cut spring (19), the half-cut punch (16) is a solid structure consistent with the shape of the product, the half-cut recess (17) is adapted to accommodate the initial material (6), the half-cut ejector pin (18) is located in the half-cut recess (17), and the half-cut spring (19) is located at the bottom of the half-cut ejector pin (18).

3. The high speed power pack progressive die for motor cover plate as claimed in claim 2 wherein: The half-cut ejector pin (18) has a limiting boss (1801) protruding radially outward, and the half-cut recess (17) has an annular groove (1701) adapted to the limiting boss (1801), the height of the annular groove (1701) is greater than the height of the limiting boss (1801).

4. The high speed power pack progressive die for motor cover plate as claimed in claim 1 wherein: The connection thickness of the initial material (6) and the material strip (22) is 1 / 3-1 / 2 of the thickness of the material strip (22).

5. The high speed power pack progressive die for motor cover plate as claimed in claim 2 wherein: The blanking die assembly comprises a blanking punch (20) located in the upper die assembly (1) and a blanking groove (21) penetrating through the lower die assembly (2) from top to bottom, and the blanking punch (20) is shaped according to the finished material (7).

6. The high speed power pack progressive die for motor cover plate as claimed in claim 5 wherein: The outer dimensions of the blanking punch (20) are smaller than the outer dimensions of the finished material (7).

7. The high speed power pack progressive die for motor cover plate as claimed in claim 5 wherein: The upper die assembly (1) comprises an upper die seat (101), an upper cushion plate (102), an upper fixed plate (103), an upper unloading cushion plate (104) and an upper unloading plate (105) arranged in sequence from top to bottom, the upper die seat (101), the upper cushion plate (102) and the upper fixed plate (103) are fixedly connected, the upper unloading cushion plate (104) and the upper unloading plate (105) are fixedly connected, the half-cut punch (16) and the blanking punch (20) are fixed on the upper fixed plate (103), the upper die seat (101) and the upper cushion plate (102) are provided with a push spring (12) and a push rod (13) connected between the push spring (12) and the upper unloading cushion plate (104).

8. The high speed power pack progressive die for motor cover plate as claimed in claim 5 wherein: The lower die assembly (2) comprises a lower fixed plate (201), a lower cushion plate (202) and a lower die seat (203) fixed in sequence from top to bottom, the half-cut concave die (17) is located on the lower fixed plate (201), the half-cut spring (19) is located in the lower die seat (203), and the half-cut ejector rod (18) is connected with the half-cut spring (19) through the half-cut lower ejector rod (23) penetrating through the lower cushion plate (202).

9. The high speed power pack progressive die for motor cover plate as claimed in claim 5 wherein: The lower die assembly (2) is provided with a material lifting spring (14) and a material lifting rod (15) located at the top of the material lifting spring (14), and the material lifting rod (15) is suitable for lifting the material belt (22).

10. The high speed power pack progressive die for stamping the motor cover plate as claimed in claim 7 wherein: The length of the blanking punch (20) is greater than the length of the half-cut punch (16).

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