A continuous fine blanking die for a magnetic ring for a vehicle

Abstract

The utility model discloses a kind of continuous fine blanking die of magnet conducting ring for vehicle, including upper cover plate, upper die holder, upper backing plate, upper clamping plate, stop plate, stripper plate, lower die plate, lower backing plate, lower die holder and lower backing foot, the upper cover plate is installed in the top of upper die holder, the upper clamping plate is installed in the bottom of upper backing plate The upper backing plate is fixed in the bottom of upper die holder, the lower die plate is installed in the top of lower backing plate, the lower backing plate is fixed in the top of lower die holder, the lower backing foot is fixed in the bottom of lower die holder, the stop plate is installed in the top of stripper plate, the stop plate is located below upper clamping plate, the bottom of upper die holder is equipped with four inner guide columns, four inner guide sleeves are equipped on the lower die plate, positioning rough cutting die group, forming pressure thin die group and blanking die group are sequentially arranged from left to right between the upper die plate and lower die plate. The utility model can quickly process and produce magnet conducting ring, compared with traditional machining cost is low, processing efficiency is high, and positioning accuracy is accurate simultaneously.

Description

Technical Field

[0001] This utility model relates to stamping dies, and more particularly to a continuous fine stamping die for automotive magnetic rings. Background Technology

[0002] Magnetic guide rings are a type of automotive component with a unique shape: a circular shape with notches on both sides and a long, slot-like through-hole in the center. Currently, magnetic guide rings with a diameter of 5 mm or more require CNC machine tools for machining. However, CNC machining of magnetic guide rings is costly, can only be done one piece at a time, resulting in low machining efficiency. Furthermore, the need for repeated positioning during part processing leads to significant dimensional fluctuations and a high defect rate, making it difficult to meet production demands. Utility Model Content

[0003] This utility model provides a continuous fine stamping die for automotive magnetic guide rings, the main purpose of which is to solve the problems of high processing cost and low processing efficiency of existing automotive magnetic guide rings processed by CNC machine tools.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A continuous fine blanking die for automotive magnetic rings includes an upper cover plate, an upper die base, an upper pad plate, an upper clamping plate, a stop plate, a stripper plate, a lower die plate, a lower pad plate, a lower die base, and lower pad feet. The upper cover plate is installed on the top of the upper die base, the upper clamping plate is installed on the bottom of the upper pad plate, and the upper pad plate is fixed to the bottom of the upper die base. The lower die plate is installed on the top of the lower pad plate, the lower pad plate is fixed to the top of the lower die base, and the lower pad feet are fixed to the bottom of the lower die base. The stop plate is installed on the top of the stripper plate and is located below the upper clamping plate. The bottom of the upper die base is provided with multiple pairs of inner guide posts, and the lower die plate is provided with an equal number of inner guide sleeves as the multiple pairs of inner guide posts. The bottom ends of the multiple pairs of inner guide posts can pass through the stop plate and the stripper plate and engage with the corresponding inner guide sleeves. From left to right, a positioning rough cutting module, a forming and thinning module, and a blanking module are arranged between the upper die plate and the lower die plate.

[0005] The positioning rough cutting module includes two positioning punches, two punching bottom dies, a first central hole punching punch, a first central hole punching bottom die, a profile punching punch, and a profile punching bottom die. The two positioning punches are arranged at intervals on the upper pad. The two punching bottom dies are installed in the lower template. The bottom ends of the two positioning punches can pass through the upper clamping plate, the stop plate, and the stripper plate to cooperate with the two corresponding punching bottom dies. The first central hole punching punch and the profile punching punch are installed on the upper die base from left to right and are located to the right of the two positioning punches. The first central hole punching bottom die and the profile punching bottom die are installed in the lower die base. The lower ends of the first central hole punching punch and the profile punching punch can pass through the upper clamping plate, the stop plate, and the stripper plate to cooperate with the corresponding first central hole punching bottom die and profile punching bottom die.

[0006] The forming and thinning die assembly includes a first thinning punch, a second thinning punch, a third thinning punch, a first thinning bottom die, a second thinning bottom die, and a third thinning bottom die. The first thinning punch, the second thinning punch, and the third thinning punch are installed on the upper die base from left to right. The first thinning bottom die, the second thinning bottom die, and the third thinning bottom die are installed on the lower die plate from left to right. The lower ends of the first thinning punch, the second thinning punch, and the third thinning punch can all pass through the upper clamping plate, the stop plate, and the stripper plate to cooperate with the corresponding first thinning bottom die, the second thinning bottom die, and the third thinning bottom die.

[0007] The bottom of both the second and third thinning punches is provided with an inclined surface that slopes inward to the center, and the taper of the inclined surface at the bottom of the second and third thinning punches is the same.

[0008] The forming and pressing die assembly further includes a second central hole punch, two external notch punches, a third central hole punch, a second central hole punch bottom die, an external notch punch bottom die, and a third central hole punch bottom die. The second central hole punch, the two external notch punches, and the third central hole punch are installed sequentially from left to right at the bottom of the upper die base. The second central hole punch bottom die, the external notch punch bottom die, and the third central hole punch bottom die are installed sequentially inside the lower die plate. The second central hole punch and the two external notch punches are located between the second pressing punch and the third pressing punch. The third central hole punch is located to the right of the third pressing punch. The bottoms of the second central hole punch, the two external notch punches, and the third central hole punch can sequentially pass through the upper clamping plate, the stop plate, and the stripper plate to cooperate with the corresponding second central hole punch bottom die, external notch punch bottom die, and third central hole punch bottom die.

[0009] The blanking module includes a blanking punch and a blanking bottom die. The blanking punch is installed at the lower part of the upper die base and is located to the right of the third central hole punching punch. The blanking bottom die is installed inside the lower die plate. The bottom end of the blanking punch can pass through the upper clamping plate, the stop plate and the stripping plate in sequence and then cooperate with the blanking bottom die.

[0010] The upper mold base is provided with four outer guide sleeves, and the lower mold base is provided with four outer guide posts. The four outer guide posts can be sleeved and fitted with the four corresponding outer guide sleeves.

[0011] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages: This utility model, by sequentially arranging a positioning rough cutting module, a forming and thinning module, and a blanking module from left to right, can quickly punch positioning holes and center holes in the strip. Then, the thinning module performs thinning and forming on the middle part of the strip, and finally, the blanking module punches and blanks the punched magnetic ring. This utility model can quickly produce magnetic rings, with lower costs and higher processing efficiency compared to traditional machining, while also achieving accurate positioning and effectively improving the yield rate. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the disassembled version of this utility model.

[0013] Figure 2 This is a three-dimensional schematic diagram of the molded part of this utility model.

[0014] Figure 3 This is a three-dimensional schematic diagram of the upper mold part of this utility model.

[0015] Figure 4 This is a three-dimensional schematic diagram of the lower mold part of this utility model.

[0016] Figure 5 This is a three-dimensional schematic diagram of the material strip of this utility model. Detailed Implementation

[0017] Reference Figure 1 and Figure 2 A continuous fine blanking die for automotive magnetic rings includes an upper cover plate 1, an upper die base 2, an upper pad plate 3, an upper clamping plate 4, a stop plate 5, a stripper plate 6, a lower template 7, a lower pad plate 8, a lower die base 9, and a lower support foot 10. The upper cover plate 1 is mounted on top of the upper die base 2, the upper clamping plate 4 is mounted on the bottom of the upper pad plate 3, and the upper pad plate 3 is fixed to the bottom of the upper die base 2. The lower template 7 is mounted on top of the lower pad plate 8, the lower pad plate 8 is fixed to the top of the lower die base 9, and the lower support foot 10 is fixed to the bottom of the lower die base 9. The stop plate 5 is mounted on top of the stripper plate 6 and is located below the upper clamping plate 4. The bottom of the upper die base 2 has six pairs of inner guide posts 11, and the lower template 7 has six pairs of inner guide sleeves 12. The bottom ends of the six pairs of inner guide posts 11 can pass through the stop plate 5 and the stripper plate 6 and engage with the corresponding six pairs of inner guide sleeves 12. The upper mold base and the lower mold plate 7 are provided with a positioning rough cutting module 13, a forming and thinning module 14 and a blanking module 15 from left to right.

[0018] Reference Figure 1 , Figure 2 and Figure 5The upper cover plate 1 protects the upper mold base 2. The upper cover plate 1 and the upper mold base 2 can be mounted on an external hydraulic press, serving an installation function. Simultaneously, the upper mold base 2, in conjunction with the upper pad plate 3, can also be used to install the punches for each process at the bottom. The upper clamping plate 4 is used to fix the upper pad plate 3 and further secure the punches for each process. The stop plate 5 ensures that the stripper plate 6 reaches its maximum position during mold closing, and the stop plate 5 can contact the upper clamping plate 4. The stripper plate 6 is used to detach the material strip from the punches for each process during mold parting, achieving the stripping function. The four inner guide pillars 11 and the inner guide sleeves 12 provide guidance and positioning, making mold closing more precise. The lower template 7 and the lower pad plate 8 are used to install the bottom mold for each process. The lower template 7 can also be used to install the lower pad plate 8, providing a connecting and fixing function. The lower template 7 and the lower pad feet 10 are used to mount on the worktable of the external hydraulic press, providing support and fixation. The positioning and roughing module 13 can punch the positioning holes, center holes, and outer shape of the strip to achieve rapid punching and positioning. The forming and thinning module 14 can further thin the strip to form a magnetic ring part that meets the requirements. The blanking module 15 can punch the strip to form independent parts.

[0019] Reference Figures 1 to 4 The positioning rough cutting module 13 includes two positioning punches 131, two punching bottom dies 132, a first center hole punching punch 133, a first center hole punching bottom die 134, a shape punching punch 135, and a shape punching bottom die 136. The two positioning punches 131 are arranged at intervals on the upper pad 3. The two punching bottom dies are installed in the lower template 7. The bottom ends of the two positioning punches 131 can pass through the upper clamping plate 4, the stop plate 5, and the stripper plate 6 to cooperate with the two corresponding punching bottom dies. The first center hole punching punch 133 and the shape punching punch 135 are installed sequentially from left to right on the upper die holder 2 and are located to the right of the two positioning punches 131. The first central hole punching bottom die 134 and the outer shape punching bottom die 136 are respectively installed in the lower die base 9. The lower ends of the first central hole punching punch 133 and the outer shape punching punch 135 can pass through the upper clamping plate 4, the stop plate 5 and the stripper plate 6 and then cooperate with the corresponding first central hole punching bottom die 134 and outer shape punching bottom die 136.

[0020] Reference Figures 1 to 4 The arrangement of two positioning punches 131 and two punching dies 132 enables punching and positioning of the strip material. The arrangement of the first center hole punching punch 133 and the first center hole punching die 134 enables the initial center hole punching of the strip material, thus opening the center hole of the magnetic ring. The arrangement of the outline punching punch 135 and the outline punching die 136 enables the outline punching of the magnetic ring in the strip material, giving the magnetic ring a preliminary shape.

[0021] Reference Figures 1 to 4 The forming and thinning die assembly of 14 pieces includes a first thinning punch 141, a second thinning punch 142, a third thinning punch 143, a first thinning bottom die 144, a second thinning bottom die 145, and a third thinning bottom die 146. The first thinning punch 141, the second thinning punch 142, and the third thinning punch 143 are installed sequentially from left to right on the upper die base 2, and the first thinning bottom die 144, the second thinning bottom die 145, and the third thinning bottom die 146 are installed sequentially from left to right on the lower die plate 7. The lower ends of the first thinning punch 141, the second thinning punch 142, and the third thinning punch 143 can all pass through the upper clamping plate 4, the stop plate 5, and the stripper plate 6 to engage with the corresponding first thinning bottom die 144, second thinning bottom die 145, and third thinning bottom die 146.

[0022] Reference Figures 1 to 4 The first thinning punch 141 and the first thinning die 144 work together to thin the magnetic ring of the strip as a whole, so that the magnetic ring can be pressed to the required thickness. The second thinning die 145 and the third thinning die 146 work together to thin the edge of the magnetic ring of the strip that has been thinned for the first time, so that the subsequent punching and blanking can ensure high edge accuracy and no burrs in the blanking.

[0023] Reference Figures 1 to 4 Both the second and third thinning punches 142 and 143 have an inwardly sloping surface 16 at their bottoms, with the same taper on the bottom surfaces 16. This design causes the edge of the magnetic ring in the strip to also slope inwards and downwards. The identical taper of the bottom surfaces 16 of the second and third thinning punches 142 and 143 ensures that the contact surfaces for subsequent stamping, trimming, and blanking are the same, resulting in smoother operation, higher surface precision, and burr-free blanking.

[0024] Reference Figures 1 to 4The forming and pressing module 14 also includes a second central hole punching punch 147, a two-outer-notch punching punch 148, a third central hole punching punch 149, a second central hole punching bottom die 1410, an outer-notch punching bottom die 1411, and a third central hole punching bottom die 1412. The second central hole punching punch 147, the two-outer-notch punching punch 148, and the third central hole punching punch 149 are installed sequentially from left to right at the bottom of the upper die base 2. The second central hole punching bottom die 1410, the outer-notch punching bottom die 1411, and the third central hole punching bottom die 1412 are installed sequentially at the bottom. Inside the template 7, the second central hole punch 147 and the two external notch punch 148 are located between the second thinning punch 142 and the third thinning punch 143. The third central hole punch 149 is located to the right of the third thinning punch 143. The bottoms of the second central hole punch 147, the two external notch punch 148 and the third central hole punch 149 can pass through the upper clamping plate 4, the stop plate 5 and the stripper plate 6 in sequence and then cooperate with the corresponding second central hole punch bottom die 1410, external notch punch bottom die 1411 and third central hole punch bottom die 1412.

[0025] Reference Figures 1 to 4 The second and third center hole punching punches 147 and 149, in conjunction with their corresponding second and third center hole punching dies 1410 and 1412, can perform multiple precision cuts on the center hole of the strip, ensuring that after multiple punching stations, the strip is repositioned and precision cut again, guaranteeing that the final punched magnetic ring has high dimensional accuracy and meets requirements. The two external notch punching punches 148, in conjunction with the external notch punching die 1411, can precisely cut the external notches of the strip, ensuring that the external dimensions of the magnetic ring meet requirements.

[0026] Reference Figures 1 to 4 The blanking module 15 includes a blanking punch 151 and a blanking bottom die 152. The blanking punch 151 is installed at the lower part of the upper die base 2 and is located to the right of the third central hole punching punch 149. The blanking bottom die 152 is installed inside the lower die plate 7. The bottom end of the blanking punch 151 can pass through the upper clamping plate 4, the stop plate 5, and the stripper plate 6 in sequence before engaging with the blanking bottom die 152. The engagement of the blanking punch 151 and the blanking bottom die 152 enables the blanking and cutting of the magnetic guide ring on the strip, achieving rapid blanking.

[0027] Reference Figures 1 to 4 The upper mold base 2 is provided with four outer guide sleeves 18, and the lower mold base 9 is provided with four outer guide pillars 17. The four outer guide pillars 17 can be fitted and engaged with the four corresponding outer guide sleeves 18. This arrangement can ensure high overall positioning accuracy and smooth mold closing when the upper and lower molds are closed.

[0028] Reference Figures 1 to 5In the die-cutting process, the strip material undergoes several steps: First, it is punched through two positioning holes to establish a positioning reference. Second, the strip is coarsely cut to form a preliminary center hole. Third, the product outline is preliminarily punched to form the initial shape of the magnetic ring. Fourth, the strip is thinned by the first thinning punch 141, flattening it from 5.5 mm to 5.2 mm to ensure consistent thickness and flatness. Fifth, the outer contour of the magnetic ring is further thinned by tilting, reducing it from 5.2 mm to 1.5 mm, facilitating subsequent precision cutting and ensuring a smooth finish, thus improving product quality. The stamping quality is as follows: The sixth process repositions the material strip after the previous two thinning processes and further precision-cuts the central hole of the magnetic ring; The seventh process repositions the material strip and punches out the outer notch to further complete the outer contour of the magnetic ring; The eighth process further thins the outer contour of the magnetic ring, reducing the connecting part of the outer contour from 1.5 mm to 0.8 mm, ensuring that there are no burrs in the subsequent punching and blanking, and that the surface meets the processing requirements; The ninth process performs a final repositioning and precision cutting of the central hole of the magnetic ring to ensure that the accuracy of the middle part of the magnetic ring and the roughness of the outside meet the requirements; The tenth process punches and blanks the material strip to separate the magnetic ring and form a complete part.

[0029] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A continuous fine blanking die for automotive magnetic rings, characterized in that: The assembly includes an upper cover plate, an upper mold base, an upper pad plate, an upper clamping plate, a stop plate, a stripper plate, a lower template, a lower pad plate, a lower mold base, and lower pad feet. The upper cover plate is installed on top of the upper mold base, the upper clamping plate is installed on the bottom of the upper pad plate, and the upper pad plate is fixed to the bottom of the upper mold base. The lower template is installed on top of the lower pad plate, the lower pad plate is fixed to the top of the lower mold base, and the lower pad feet are fixed to the bottom of the lower mold base. The stop plate is installed on top of the stripper plate and is located below the upper clamping plate. The bottom of the upper mold base is provided with multiple pairs of inner guide posts, and the lower template is provided with the same number of inner guide sleeves as the multiple pairs of inner guide posts. The bottom ends of the multiple pairs of inner guide posts can pass through the stop plate and the stripper plate and engage with the corresponding inner guide sleeves. From left to right, the upper mold base and the lower template are provided with a positioning rough cutting module, a forming and thinning module, and a blanking module.

2. The continuous fine stamping die for automotive magnetic rings as described in claim 1, characterized in that: The positioning rough cutting module includes two positioning punches, two punching bottom dies, a first central hole punching punch, a first central hole punching bottom die, a profile punching punch, and a profile punching bottom die. The two positioning punches are arranged at intervals on the upper pad. The two punching bottom dies are installed in the lower template. The bottom ends of the two positioning punches can pass through the upper clamping plate, the stop plate, and the stripper plate to cooperate with the two corresponding punching bottom dies. The first central hole punching punch and the profile punching punch are installed on the upper die base from left to right and are located to the right of the two positioning punches. The first central hole punching bottom die and the profile punching bottom die are installed in the lower die base. The lower ends of the first central hole punching punch and the profile punching punch can pass through the upper clamping plate, the stop plate, and the stripper plate to cooperate with the corresponding first central hole punching bottom die and profile punching bottom die.

3. The continuous fine stamping die for automotive magnetic rings as described in claim 1, characterized in that: The forming and thinning die assembly includes a first thinning punch, a second thinning punch, a third thinning punch, a first thinning bottom die, a second thinning bottom die, and a third thinning bottom die. The first thinning punch, the second thinning punch, and the third thinning punch are installed on the upper die base from left to right. The first thinning bottom die, the second thinning bottom die, and the third thinning bottom die are installed on the lower die plate from left to right. The lower ends of the first thinning punch, the second thinning punch, and the third thinning punch can all pass through the upper clamping plate, the stop plate, and the stripper plate to cooperate with the corresponding first thinning bottom die, the second thinning bottom die, and the third thinning bottom die.

4. The continuous fine stamping die for automotive magnetic rings as described in claim 3, characterized in that: The bottom of both the second and third thinning punches is provided with an inclined surface that slopes inward to the center, and the taper of the inclined surface at the bottom of the second and third thinning punches is the same.

5. The continuous fine stamping die for automotive magnetic rings as described in claim 4, characterized in that: The forming and pressing die assembly further includes a second central hole punch, two external notch punches, a third central hole punch, a second central hole punch bottom die, an external notch punch bottom die, and a third central hole punch bottom die. The second central hole punch, the two external notch punches, and the third central hole punch are installed sequentially from left to right at the bottom of the upper die base. The second central hole punch bottom die, the external notch punch bottom die, and the third central hole punch bottom die are installed sequentially inside the lower die plate. The second central hole punch and the two external notch punches are located between the second pressing punch and the third pressing punch. The third central hole punch is located to the right of the third pressing punch. The bottoms of the second central hole punch, the two external notch punches, and the third central hole punch can sequentially pass through the upper clamping plate, the stop plate, and the stripper plate to cooperate with the corresponding second central hole punch bottom die, external notch punch bottom die, and third central hole punch bottom die.

6. The continuous fine stamping die for automotive magnetic rings as described in claim 1, characterized in that: The blanking module includes a blanking punch and a blanking bottom die. The blanking punch is installed at the lower part of the upper die base and is located to the right of the third central hole punching punch. The blanking bottom die is installed inside the lower die plate. The bottom end of the blanking punch can pass through the upper clamping plate, the stop plate and the stripping plate in sequence and then cooperate with the blanking bottom die.

7. The continuous fine stamping die for automotive magnetic rings as described in claim 1, characterized in that: The upper mold base is provided with four outer guide sleeves, and the lower mold base is provided with four outer guide posts. The four outer guide posts can be sleeved and fitted with the four corresponding outer guide sleeves.

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