Hemming multi-station composite die array

Abstract

The utility model discloses a hemming multi-station composite die array which comprises a plurality of stamping stations and dies which are arranged in sequence, each stamping station comprises a stamping head and a fixed die holder, the stamping heads are arranged above the fixed die holders, each die comprises an upper die and a lower die, and the upper die and the lower die are arranged on the upper die and the lower die respectively. The dies are correspondingly installed on the stamping stations one by one, upper dies of the dies are fixed to stamping heads of the corresponding stamping stations, and lower dies of the dies are fixed to fixed die bases of the corresponding stamping stations. The number of the stamping stations is not less than five, and the dies at least comprise a blanking die, a stretching die, a trimming die, a bottom finishing die and a hemming die. According to the utility model, a plurality of stamping industries can simultaneously drive a plurality of pairs of dies for common processing, the efficiency is obviously improved, the number of the dies at each station can be increased or decreased according to the complexity of the process, each single station die can be easily taken out for repair or maintenance, and the downtime is reduced.

Description

Technical Field

[0001] This utility model relates to the field of stamping manufacturing technology, specifically to a multi-station composite mold array for edge rolling. Background Technology

[0002] Bearing outer ring curling is a manufacturing process typically used to enhance the structural strength, stability, and sealing performance of the bearing outer ring. By curling, the edge of the bearing outer ring is formed into a curled section. This not only helps to secure internal bearing components (such as balls or rollers and cages) but can also provide additional sealing in certain designs, preventing dust, moisture, and other contaminants from entering the bearing. However, existing stamping curling dies are complex, and direct stamping curling can easily result in a high scrap rate.

[0003] To address the aforementioned issues, a multi-station composite mold array for edge curling is necessary. Utility Model Content

[0004] The purpose of this invention is to provide a multi-station composite mold array for edge curling, overcoming the aforementioned defects in the prior art.

[0005] The technical solution to achieve the purpose of this utility model is: a multi-station composite mold array for hemming, comprising multiple stamping stations and molds arranged in sequence. Each stamping station includes a stamping head and a fixed mold base. The stamping head is disposed above the fixed mold base. Each mold includes an upper mold and a lower mold. The molds are installed one by one on the stamping stations. The upper mold is fixed on the stamping head of the corresponding stamping station, and the lower mold is fixed on the fixed mold base of the corresponding stamping station. There are no fewer than four stamping stations, and the multiple molds include at least a blanking mold, a stretching mold, a trimming mold, and a hemming mold.

[0006] In a preferred embodiment, the edge-rolling mold includes a 45° edge-rolling mold, a 90° edge-rolling mold, and a 180° edge-rolling mold.

[0007] In a preferred embodiment, the plurality of molds further includes a bottom mold for shaping the lower part of the material.

[0008] In a preferred embodiment, the plurality of molds further includes a bottom-cutting mold for cutting off the lower part of the material.

[0009] In a preferred embodiment, the plurality of molds further includes a lower edge-rolling mold for rolling the lower part of the material.

[0010] In a preferred embodiment, the lower molds of the 45° curling mold, 90° curling mold, and 180° curling mold are the same.

[0011] By adopting the above technical solution, this utility model has the following beneficial effects:

[0012] (1) This utility model's multi-station composite mold array adopts a modular single mold design, making mold manufacturing more economical and reducing mold costs. It can drive multiple stamping industries to process multiple molds simultaneously, significantly improving efficiency.

[0013] (2) The 45°, 90° and 180° curling molds of this utility model optimize the curling stamping process. Through the progressive curling stamping steps of 45°, 90° and 180°, the yield rate is improved.

[0014] (3) The 45°, 90° and 180° curling molds of this utility model adopt the same lower mold design, which not only simplifies the mold design process, but also reduces the manufacturing cost, because only one type of lower mold needs to be made to meet different curling requirements.

[0015] (4) The molds at each workstation can be added or removed according to the complexity of the process. Each individual workstation mold can be easily removed for repair or maintenance, reducing downtime. Attached Figure Description

[0016] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0017] Figure 1 This is a cross-sectional view of a multi-station composite mold array.

[0018] Figure 2 This is a schematic diagram of the outer ring of the bearing after stamping using molds 1-3.

[0019] Figure 3 This is a schematic diagram of the outer ring of the bearing after stamping with die 4-6.

[0020] Figure 4 This is a schematic diagram of the outer ring of the bearing after stamping using mold 7-9.

[0021] The labels in the attached diagram are as follows: 1. Blanking Station; 1-1. Blanking Punch Head; 1-2. Blanking Fixing Die Base; 1-3. Upper Blanking Die; 1-4. Lower Blanking Die; 2. Drawing Station; 2-1. Drawing Punch Head; 2-2. Drawing Fixing Die Base; 2-3. Upper Drawing Die; 2-4. Lower Drawing Die; 3. Trimming Station; 3-1. Trimming Punch Head; 3-2. Trimming Fixing Die Base; 3-3. Upper Trimming Die; 3-4. Lower Trimming Die; 4. Bottom Finishing Station; 4-1. Bottom Finishing Punch Head; 4-2. Bottom Finishing Fixing Die Base; 4-3. Upper Bottom Finishing Die; 4-4. Lower Bottom Finishing Die; 5. 45° Hemming Station; 5-1. 45° Hemming Punch Head; 5-2. 45° Hemming Fixing Die Base; 5-3. 45° Hemming Upper Die; 5-4. 45° 6. 90° Hemming Lower Die; 6-1. 90° Hemming Press Head; 6-2. 90° Hemming Fixed Die Base; 6-3. 90° Hemming Upper Die; 6-4. 90° Hemming Lower Die; 7. 180° Hemming Station; 7-1. 180° Hemming Press Head; 7-2. 180° Hemming Fixed Die Base; 7-3. 180° Hemming Upper Die; 7-4. 18 0° curling lower die; 8. Bottom-feeding station; 8-1. Bottom-feeding punch head; 8-2. Bottom-feeding fixed die base; 8-3. Bottom-feeding upper die; 8-4. Bottom-feeding lower die; 9. Lower 180° curling station; 9-1. Lower 180° curling punch head; 9-2. Lower 180° curling fixed die base; 9-3. Lower 180° curling upper die; 9-4. Lower 180° curling lower die. Detailed Implementation

[0022] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0028] (Example 1)

[0029] See Figure 1 and Figure 2 A multi-station composite mold array for edge rolling, used to manufacture bearing outer rings with 180° edge rolling on both the top and bottom, includes nine stamping stations arranged in sequence: blanking station 1, stretching station 2, edge trimming station 3, bottom finishing station 4, 45° edge rolling station 5, 90° edge rolling station 6, 180° edge rolling station 7, bottom finishing station 8, and lower 180° edge rolling station 9.

[0030] Blanking station 1 includes a blanking punch head 1-1, a blanking fixed die base 1-2, an upper blanking die 1-3, and a lower blanking die 1-4. The blanking punch head 1-1 is positioned above the blanking fixed die base 1-2, the upper blanking die 1-3 is fixed below the blanking punch head 1-1, and the lower blanking die 1-4 is fixed on the blanking fixed die base 1-2. During the blanking process, the sheet metal is placed on the lower blanking die 1-4, and then pressure is applied downwards through the upper blanking die 1-3. Due to the shearing action of the cutting edges of the upper blanking die 1-3 and the lower blanking die 1-4, the sheet metal is cut according to a predetermined closed contour, forming a blank. Figure 2 The bearing outer ring P1 is shown.

[0031] The stretching station 2 includes a stretching punch head 2-1, a stretching fixed die base 2-2, an upper stretching die 2-3, and a lower stretching die 2-4. The stretching punch head 2-1 is positioned above the stretching fixed die base 2-2, the upper stretching die 2-3 is fixed below the stretching punch head 2-1, and the lower stretching die 2-4 is fixed on the stretching fixed die base 2-2. The upper stretching die 2-3 is a cylindrical block, and the lower stretching die 2-4 is a concave die with an outwardly expanding arc-shaped chamfer on its upper surface. The bearing outer ring P1 is placed into the concave die of the lower stretching die 2-4, and the upper stretching die 2-3 punches, stretching the upper part of the bearing outer ring P1 through the arc-shaped chamfer, thinning the upper wall and forming an outward arc shape, as shown. Figure 2 The bearing outer ring P2 is shown.

[0032] The trimming station 3 includes a trimming punch head 3-1, a trimming fixed die base 3-2, an upper trimming die 3-3, and a lower trimming die 3-4. The trimming punch head 3-1 is positioned above the trimming fixed die base 3-2, the upper trimming die 3-3 is fixed below the trimming punch head 3-1, and the lower trimming die 3-4 is fixed on the trimming fixed die base 3-2. The upper trimming die 3-3 is cylindrical, and the lower trimming die 3-4 is a concave die with a small inward protrusion on its upper surface. The outer ring P2 of the bearing is placed into the concave die of the lower trimming die 3-4, and through punching, the outward arc-shaped edge of the outer ring P2 is cut off, forming a shape like... Figure 2 The bearing outer ring P3 is shown.

[0033] The bottom-forming station 4 includes a bottom-forming stamping head 4-1, a bottom-forming fixed mold base 4-2, a bottom-forming upper mold 4-3, and a bottom-forming lower mold 4-4. The bottom-forming stamping head 4-1 is positioned above the bottom-forming fixed mold base 4-2, the bottom-forming upper mold 4-3 is fixed below the bottom-forming stamping head 4-1, and the bottom-forming lower mold 4-4 is fixed on the bottom-forming fixed mold base 4-2. The bottom-forming upper mold 4-3 has a recess, and the bottom-forming lower mold 4-4 has a corresponding protrusion. The bearing outer ring P3 is placed on the bottom-forming lower mold 4-4, and the bottom of the bearing outer ring P3 is shaped by the stamping of the bottom-forming upper mold 4-3, forming a shape like... Figure 3 The bearing outer ring P4 is shown.

[0034] The 45° hemming station 5 includes a 45° hemming punch head 5-1, a 45° hemming fixed mold base 5-2, a 45° hemming upper mold 5-3, and a 45° hemming lower mold 5-4. The 45° hemming punch head 5-1 is positioned above the 45° hemming fixed mold base 5-2. The 45° hemming upper mold 5-3 is fixed below the 45° hemming punch head 5-1, and the 45° hemming lower mold 5-4 is fixed on the 45° hemming fixed mold base 5-2. The bottom of the 45° hemming upper mold 5-3 has a 45° frustum-shaped recess, which is narrower at the top and wider at the bottom. The 45° hemming lower mold 5-4 is a concave mold. The outer ring P4 of the bearing is placed in the lower mold 5-4, and the thin wall above the outer ring P4 is bent inward at a 45° angle, forming a shape like... Figure 3 The bearing outer ring P5 is shown.

[0035] The 90° hemming station 6 includes a 90° hemming punch head 6-1, a 90° hemming fixed die base 6-2, a 90° hemming upper die 6-3, and a 90° hemming lower die 6-4. The 90° hemming punch head 6-1 is positioned above the 90° hemming fixed die base 6-2. The 90° hemming upper die 6-3 is fixed below the 90° hemming punch head 6-1, and the 90° hemming lower die 6-4 is fixed on the 90° hemming fixed die base 6-2. The bottom of the 90° hemming upper die 6-3 has a cylindrical recess. The 90° hemming lower die 6-4 and the 45° hemming lower die 5-4 are identical dies. The bearing outer ring P5 is placed in the 90° hemming lower die 6-4, and the bent portion above the bearing outer ring P5 is punched to form a shape resembling a 90° hemming stamping head 6-1. Figure 3 The bearing outer ring P6 is shown.

[0036] The 180° curling station 7 includes a 180° curling punch head 7-1, a 180° curling fixed die base 7-2, a 180° curling upper die 7-3, and a 180° curling lower die 7-4. The 180° curling punch head 7-1 is positioned above the 180° curling fixed die base 7-2, the 180° curling upper die 7-3 is fixed below the 180° curling punch head 7-1, and the 180° curling lower die 7-4 is fixed on the 180° curling fixed die base 7-2. The 180° curling upper die 7-3 is cylindrical, and the 180° curling lower die 7-4 and the 45° curling lower die 5-4 are identical concave dies. The bearing outer ring P6 is placed in the 180° curling lower die 7-4, and the 90° bend above the bearing outer ring P6 is punched to form the shape shown in the image. Figure 4 The bearing outer ring P7 is shown with a 180° rolled edge.

[0037] The bottom-feeding station 8 includes a bottom-feeding punch head 8-1, a bottom-feeding fixed mold base 8-2, a bottom-feeding upper mold 8-3, and a bottom-feeding lower mold 8-4. The bottom-feeding punch head 8-1 is positioned above the bottom-feeding fixed mold base 8-2, the bottom-feeding upper mold 8-3 is fixed below the bottom-feeding punch head 8-1, and the bottom-feeding lower mold 8-4 is fixed on the bottom-feeding fixed mold base 8-2. The bottom-feeding upper mold 8-3 is cylindrical, and the bottom-feeding lower mold 8-4 is a groove with a small groove at the bottom. The inner diameter of the small groove is the same as that of the cylindrical upper mold 8-3. The outer ring of the bearing P7 is placed in the bottom-feeding lower mold 8-4, and the protrusion at the bottom of the outer ring of the bearing P7 is removed by punching, forming a shape like... Figure 4 The bearing outer ring P8 is shown.

[0038] The lower 180° curling station 9 includes a lower 180° curling punch head 9-1, a lower 180° curling fixed mold base 9-2, a lower 180° curling upper mold 9-3, and a lower 180° curling lower mold 9-4. The lower 180° curling punch head 9-1 is positioned above the lower 180° curling fixed mold base 9-2, the lower 180° curling upper mold 9-3 is fixed below the lower 180° curling punch head 9-1, and the lower 180° curling lower mold 9-4 is fixed on the lower 180° curling fixed mold base 9-2. The lower 180° curling upper mold 9-3 is a cylinder with a diameter larger than that of the bearing outer ring P8, and the lower 180° curling lower mold 9-4 is a die with a cylindrical protrusion at the bottom. The diameter of the cylindrical protrusion is equal to the inner diameter of the upper curl on the bearing outer ring P8. Through stamping, the final shape is formed as shown in the image. Figure 4 The outer ring P9 of the double 180° rolled bearing is shown.

[0039] In this embodiment, the sheet material is sent to blanking station 1, and the blanking punch head drives the blanking upper die 1-3 to punch and form the bearing outer ring P1. After completion, the bearing outer ring P1 is transferred to stretching station 2 to be punched to form the bearing outer ring P2. This process is repeated until all nine stations participate in the processing to obtain the final product.

[0040] This multi-station composite mold array adopts a modular single mold design, making mold manufacturing more economical and reducing mold costs. It can drive multiple stamping industries to process multiple sets of molds simultaneously, significantly improving efficiency. Furthermore, the molds at each station can be added or removed according to the complexity of the process, and each individual station mold can be easily removed for repair or maintenance, reducing downtime.

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-station crimping compound die array, characterized by: The device includes multiple stamping stations and dies arranged in sequence. Each stamping station includes a stamping head and a fixed die base. The stamping head is positioned above the fixed die base. Each die includes an upper die and a lower die. The dies are installed one by one on the stamping stations. The upper die is fixed to the stamping head of the corresponding stamping station, and the lower die is fixed to the fixed die base of the corresponding stamping station. There are at least four stamping stations, and the dies include at least a blanking die, a drawing die, a trimming die, and a curling die.

2. A multi-station crimping compound die array according to claim 1, wherein: The edge-rolling mold includes a 45° edge-rolling mold, a 90° edge-rolling mold, and a 180° edge-rolling mold.

3. A multi-station crimping compound die array according to claim 2, wherein: The plurality of molds also includes a bottom mold for shaping the lower part of the material.

4. A multi-station crimping compound die array according to claim 3, wherein: The plurality of molds also includes a bottom-cutting mold for removing the lower part of the material.

5. A multi-station crimping compound die array according to claim 4, wherein: The plurality of molds also includes a lower edge-rolling mold for rolling the lower part of the material.

6. A multi-station crimping compound die array according to claim 5, wherein: The lower molds of the 45° curling mold, 90° curling mold, and 180° curling mold are the same.

Images