Adjustable rib structure of deep drawing die

Abstract

The utility model provides a movable adjusting muscle structure of deep drawing die, including draw -out plate, muscle groove, movable drawing muscle and fixed part, the muscle groove is located on draw -out plate, the lower section of movable drawing muscle is inlayed in muscle groove and is fixed through fixed part, the utility model solves the problem that fixed drawing muscle cannot adjust according to the flow characteristic of different batches of materials, leads to the unstable quality of part and the problem of batch rejection, and does not need to replace draw -out plate as a whole, has saved the mould improvement cost, has improved production flexibility, has shortened mould debugging time.

Description

[Technical Field]

[0001] This utility model relates to the field of deep drawing die design and manufacturing technology, specifically, to an adjusting rib structure for a deep drawing die. [Background Technology]

[0002] Controlling material flow is a crucial step in the deep drawing process of sheet metal. For parts with irregular shapes, the sliding speed and flow rate of the sheet metal vary significantly in different areas due to the complexity of the geometry. Currently, the industry mainly controls material flow by optimizing the die structure and adjusting process parameters, with drawbead technology being one of the most commonly used methods.

[0003] Draw beads force the sheet metal into continuous, localized plastic bending deformation (bending and counter-bending) within its structure, generating significant frictional forces that collectively create resistance to sheet metal flow. This resistance effectively "holds" the sheet metal, slowing its flow rate and volume into the die. The height of the draw beads controls the material flow rate. Increasing the draw bead height significantly increases the resistance to bending / counter-bending deformation and frictional resistance as the sheet metal passes through, thus strongly inhibiting (slowing down) the flow rate in that area and reducing the inflow. Conversely, decreasing the draw bead height reduces the resistance to bending / counter-bending deformation and frictional resistance as the sheet metal passes through, thus relatively allowing (accelerating) the flow rate in that area and increasing the inflow. The height of the draw bead is one of the most important parameters for adjusting this resistance: increasing the height significantly increases resistance (slows down flow), while decreasing the height decreases resistance (accelerates flow). By rationally designing and adjusting the bead height (as well as the shape and arrangement of the bead), precise and localized control of the sheet metal flow rate can be achieved, ensuring the smooth stretching and forming of complex parts and the final quality.

[0004] Traditional deep drawing dies typically employ a fixed drawbead structure, where raised drawbeads are directly machined onto the die. This structure is simple, reliable, and has low manufacturing costs, making it suitable for large-scale, stable production. Another improvement is the use of a segmented drawbead design, where drawbeads of varying heights are machined in different areas to accommodate variations in material flow at different locations. However, segmented drawbeads are essentially still a type of fixed drawbead structure.

[0005] Fixed draw beads cannot adapt to performance fluctuations between different batches of material. When the material flow characteristics change, it can easily lead to wrinkling or cracking of parts. Although segmented draw beads can adapt to flow differences in different areas, they still cannot quickly respond to performance changes between material batches. Adjustments require replacing the entire release die, which is costly and inefficient. [Utility Model Content]

[0006] Therefore, the technical objective of this utility model is to provide a movable adjusting rib structure for a deep drawing die, thereby solving the problem that fixed drawing ribs cannot be adjusted according to the flow characteristics of different batches of materials, leading to unstable part quality and batch scrap. Furthermore, it eliminates the need for complete replacement of the die-casting template, saving die modification costs, improving production flexibility, and shortening die debugging time.

[0007] To achieve the aforementioned objective, the technical solution adopted in this utility model embodiment is: a movable adjusting rib structure for a deep drawing die, including a release template, a rib groove, a movable drawing rib, and a fixing member; the rib groove is provided on the release template, and the lower section of the movable drawing rib is embedded in the rib groove and fixed by the fixing member.

[0008] Furthermore, the rib groove is provided with several threaded through holes, and the back of the movable drawbar is provided with several corresponding threaded blind holes. The fastener is a screw, which passes through the threaded through holes from the reverse side of the release plate and is locked in the threaded blind holes.

[0009] Furthermore, the movable drawbars are a series of prefabricated parts, and the heights of the movable drawbars in the series of prefabricated parts are arranged in an arithmetic sequence.

[0010] Furthermore, the back of each movable drawbar in the prefabricated series is engraved with a height marking.

[0011] Furthermore, the groove is provided with a plurality of striking through holes, which are positioned to avoid the location of the threaded blind hole.

[0012] The advantages of this invention are as follows: The drawbeads of the deep drawing die are designed as an adjustable structure, enabling rapid adjustment of the drawbead height to adapt to performance fluctuations in different batches of materials; it saves on die modification costs, eliminating the need for complete die replacement; it improves production flexibility and shortens die debugging time; and it significantly reduces the scrap rate of parts due to changes in material properties. When adjustment is required, the movable drawbeads can be detached, and a suitable height drawbead can be selected for replacement, or the height can be adjusted directly by welding or grinding according to measured material flow characteristics before reinstallation and fixation. By adjusting the drawbead height, its resistance to the material is changed, thereby precisely controlling material flow. [Attached Image Description]

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a three-dimensional schematic diagram of the movable adjusting rib structure of the stretching mold of this utility model.

[0015] Figure 2 This is a schematic diagram illustrating the installation principle of the movable adjusting rib structure of this utility model.

[0016] Figure 3 This is a structural schematic diagram of the prefabricated component series of this utility model.

[0017] Figure 4 This is a schematic diagram of the reverse side structure of the rib groove of this utility model.

Detailed Implementation Methods

[0018] This utility model embodiment provides a movable adjusting rib structure for a deep drawing die, which can adjust the height according to the flow characteristics of different batches of materials, thus ensuring the stability of part quality.

[0019] The technical solution in this embodiment of the invention addresses the aforementioned problems. The overall concept is as follows: This invention sets the drawbeads of the deep drawing die as an adjustable structure. During the drawing process, when the hardness of the batch of raw metal is high, a higher adjustable drawbead is needed to strongly suppress (slow down) the flow rate of the sheet metal in that area, reducing the inflow. Conversely, when the hardness of the batch of raw metal is low, a lower adjustable drawbead reduces the bending / reverse bending deformation resistance and frictional resistance of the sheet metal as it passes through, thereby relatively allowing (accelerating) the flow rate of the sheet metal in that area and increasing the inflow. When it is necessary to adjust the height of the adjustable drawbead, it can be disassembled, and a suitable adjustable drawbead of appropriate height can be selected for replacement, or its height can be directly ground according to the measured material flow characteristics and then reinstalled and fixed. By adjusting the height of the drawbead, its resistance to the material is changed, thereby precisely controlling the material flow.

[0020] 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.

[0021] Please see Figures 1 to 2 As shown, the deep drawing die includes an upper die 100 and a lower die 200. The movable adjusting rib structure 10 of this utility model is usually set on the lower die 200 of the deep drawing die and located around the periphery of the profile surface 201. The movable adjusting rib structure 10 includes a release template 1, a rib groove 2, a movable drawing rib 3, and a fixing member 4; the rib groove 2 is provided on the release template 1, and the lower section of the movable drawing rib 3 is embedded in the rib groove 2 and fixed by the fixing member 4.

[0022] The rib groove 2 is provided with several threaded through holes 21, and the back of the movable drawbar 3 is provided with several corresponding threaded blind holes 31. The fastener 4 is a screw, which passes through the threaded through holes 21 from the back of the template and is locked in the threaded blind holes 31.

[0023] like Figure 3As shown, the movable drawbeads 3 are part of a prefabricated series, and the heights of each movable drawbead 3 in the prefabricated series are arranged in an arithmetic sequence. The height of each movable drawbead 3 in the prefabricated series can be designed based on experience with the hardness of the material. When the material batch changes and the hardness of the material changes, a movable drawbead 3 with a suitable height can be selected from the prefabricated series. If necessary, the height can be finely adjusted before being fixed in the rib groove 2 to improve adjustment efficiency.

[0024] Each movable drawbar 3 in the precast component series has a height marking on its back, which makes it easier for workers to select movable drawbars of appropriate height and improve work efficiency.

[0025] like Figure 4 As shown, the rib groove 2 is also provided with several striking through holes 22, which are positioned to avoid the location of the threaded blind hole 21. The striking through holes 22 facilitate the replacement of the movable drawbar 3. The operation method is as follows: after removing all the fixing parts 4, select a rod of appropriate size, insert one end of the rod into the striking through hole 22 from the back of the stripping template 1, resist the movable drawbar 3, and then strike the other end of the rod to remove the movable drawbar 3 from the rib groove 2.

[0026] The movable drawbar is made of high-strength alloy steel with a hardness of HRC58-62; the fixing mechanism adopts a bolt connection method with screw specifications of M8×1.25 and strength grade of 8.8.

[0027] The advantages of this utility model lie in its operating procedures and precautions:

[0028] S1: Remove the existing movable drawbar;

[0029] S2: Measure the flow characteristics of the current batch of materials;

[0030] S3: Calculate the required draw bead height based on the measurement results of the flow characteristics;

[0031] S4: Select an appropriate height for the active drawbead. If necessary, grind the active drawbead to reduce its height, or increase its height by welding to obtain an active drawbead of appropriate height.

[0032] S5: Reinstall the movable drawbar of appropriate height onto the formwork;

[0033] S6: Conduct trial molding and make fine adjustments.

[0034] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A movable adjusting rib structure of a deep drawing die, characterized by: It includes a formwork release plate, a rib groove, a movable drawbar, and a fastener; the rib groove is provided on the formwork release plate, and the lower section of the movable drawbar is embedded in the rib groove and fixed by the fastener.

2. A movable adjusting rib structure of a deep drawing die according to claim 1, characterized in that: The rib groove is provided with several threaded through holes, and the back of the movable drawbar is provided with several corresponding threaded blind holes. The fastener is a screw, which passes through the threaded through holes from the back of the template and is locked in the threaded blind holes.

3. The movable adjusting rib structure of a deep drawing die according to claim 1, characterized in that: The movable drawbars are a series of prefabricated components, and the heights of the movable drawbars in the series of prefabricated components are arranged in an arithmetic sequence.

4. A movable adjusting rib structure of a deep drawing die according to claim 3, characterized in that: The back of each movable drawbar in the precast component series is marked with a height.

5. The movable adjusting rib structure of a deep drawing die according to claim 2, wherein: The groove is provided with a number of striking through holes, which are positioned to avoid the location of the threaded blind hole.

Images