Stamping die based on bending machine and bending machine

Abstract

The utility model discloses a stamping die based on a bending machine and the bending machine, and relates to the technical field of metal forming. The stamping die based on the bending machine comprises a movable die assembly, a fixed die assembly and a plurality of elastic rods. The movable die assembly comprises a forming punch. The fixed die assembly comprises a base, and a forming groove matched with the forming punch is formed in the base. The multiple elastic rods are arranged in the circumferential direction of the groove wall of the forming groove, and a springback avoiding groove is formed between every two adjacent elastic rods. The bending machine comprises the stamping die based on the bending machine. By means of the design, the forming precision and quality of the machined part are effectively improved, damage to the wall of the forming groove when the machined part rebounds and deforms is avoided, and therefore the service life of the fixed die assembly is prolonged. In addition, in the demolding process, automatic demolding can be achieved without additional auxiliary tools, the operation process is simplified, and the forming efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of metal forming technology, and in particular to a stamping die and a bending machine based on a bending machine. Background Technology

[0002] Existing stamping dies typically consist of an upper die and a lower die, which work together to bend the workpiece into a predetermined shape under pressure. However, in current stamping processes, the downward pressure of the upper die causes the workpiece to directly contact the groove wall of the lower die. When the upper die rises, the workpiece experiences springback deformation, which affects the forming accuracy and quality of the workpiece and damages the lower die, shortening its service life. Furthermore, during demolding, additional auxiliary tools are often required, increasing operational complexity and reducing forming efficiency. Utility Model Content

[0003] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a stamping die and a bending machine based on a bending machine.

[0004] The technical solution provided by this utility model is as follows:

[0005] A stamping die based on a bending machine, comprising:

[0006] Moving mold assembly, including forming punch;

[0007] A mold assembly includes a base, on which a forming groove adapted to the forming punch is provided;

[0008] Multiple elastic rods are arranged circumferentially along the groove wall of the shaped groove, and a springback relief groove is formed between adjacent elastic rods.

[0009] Furthermore, the elastic rod is embedded in the groove wall of the shaped groove, and its exposed end face protrudes from the groove wall to form a contact surface.

[0010] Furthermore, the elastic rod is an elastomer.

[0011] Furthermore, the number of the eurygmus bars is three, and the three eurygmus bars are respectively disposed on opposite sides and at the bottom of the groove wall of the forming groove.

[0012] Furthermore, the groove wall of the formed groove includes:

[0013] Two straight groove walls are respectively set on opposite sides of the opening of the forming groove;

[0014] An arc-shaped groove wall is provided at the bottom of the formed groove. An elastic rod is provided between the straight groove wall and the arc-shaped groove wall. A rebound relief groove is formed between the end of the straight groove wall away from the elastic rod and the elastic rod.

[0015] Furthermore, the stamping working surface of the forming punch has a semi-circular structure.

[0016] Furthermore, a placement platform is provided at one end of the base near the opening of the molding groove, and limiting portions are provided on opposite sides of the placement platform.

[0017] Furthermore, a mounting component is provided at the end of the base away from the opening of the forming groove, and the base is detachably mounted on the worktable of the bending machine via the mounting component.

[0018] Furthermore, the mounting component is a positioning protrusion.

[0019] On the other hand, the present invention also provides a bending machine, including the stamping die based on the bending machine as described in any of the above embodiments.

[0020] Compared with the prior art, the stamping die and bending machine based on the bending machine provided in this embodiment of the utility model have at least the following technical effects:

[0021] The stamping die based on a bending machine includes a moving die assembly, a fixed die assembly, and multiple elastic bars. The moving die assembly includes a forming punch; the fixed die assembly includes a base with forming grooves adapted to the forming punch; multiple elastic bars are arranged circumferentially along the walls of the forming grooves, and springback relief grooves are formed between adjacent elastic bars. This design effectively improves the forming accuracy and quality of the workpiece, avoids damage to the walls of the forming grooves during springback deformation, and thus extends the service life of the fixed die assembly. Furthermore, automatic demolding can be achieved without additional auxiliary tools during the demolding process, simplifying the operation and improving forming efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the moving mold assembly in one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the fixed mold assembly in one embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the fixed mold assembly in another state according to one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the pre-stamping state of a stamping die in one embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the stamping state of a stamping die in one embodiment of the present invention.

[0028] Figure label:

[0029] 10. Moving mold assembly; 11. Forming punch; 20. Fixed mold assembly; 21. Base; 211. Forming groove; 2111. Straight groove wall; 2112. Arc groove wall; 212. Placement platform; 213. Limiting part; 214. Mounting part; 30. Elastic rod; 31. Contact surface; 40. Springback relief groove; 50. Workpiece to be processed. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0034] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0035] Please refer to the attached document. Figure 1 To be continued Figure 5 As shown, one embodiment of this utility model provides a stamping die based on a bending machine, including a moving die assembly 10, a fixed die assembly 20, and a plurality of elastic rods 30; the moving die assembly 10 includes a forming punch 11; the fixed die assembly 20 includes a base 21, on which a forming groove 211 adapted to the forming punch 11 is provided; the plurality of elastic rods 30 are arranged circumferentially along the groove wall of the forming groove 211, and a springback relief groove 40 is formed between adjacent elastic rods 30. The moving die assembly 10 also includes a driving device, which can drive the forming punch 11 to descend and ascend. The workpiece 50 to be processed is typically a metal sheet.

[0036] During the stamping process of the forming punch 11 pressing down on the workpiece 50, the workpiece 50 contacts the elastic rod 30. The springback relief groove 40 formed between two adjacent elastic rods 30 can effectively prevent the workpiece 50 from being damaged by springback deformation on the groove wall of the forming groove 211, thereby extending the service life of the fixed mold assembly 20. In addition, the springback force of the elastic rod 30 can provide resistance to the springback deformation of the workpiece 50, reducing the springback effect and thus improving the forming accuracy and quality of the workpiece 50. At the same time, the springback force of the elastic rod 30 enables the stamping die to achieve automatic demolding without the need for additional auxiliary tools, thereby simplifying the operation process and improving forming efficiency.

[0037] In this embodiment, the stamping die based on the bending machine includes a moving die assembly 10, a fixed die assembly 20, and multiple elastic rods 30. The moving die assembly 10 includes a forming punch 11. The fixed die assembly 20 includes a base 21, on which a forming groove 211 adapted to the forming punch 11 is provided. The multiple elastic rods 30 are arranged circumferentially along the groove wall of the forming groove 211, and a springback avoidance groove 40 is formed between adjacent elastic rods 30. This design effectively improves the forming accuracy and quality of the workpiece 50, avoids damage to the groove wall of the forming groove 211 when the workpiece 50 springs back and deforms, thereby extending the service life of the fixed die assembly 20. In addition, automatic demolding can be achieved without additional auxiliary tools during the demolding process, simplifying the operation process and improving the forming efficiency.

[0038] In some alternative embodiments, the elastic rod 30 is embedded in the groove wall of the forming groove 211, with its exposed end face protruding from the groove wall of the forming groove 211 to form a contact surface 31. During the stamping process of the forming punch 11 pressing down on the workpiece 50, the workpiece 50 can abut against the contact surface 31.

[0039] In some optional embodiments, the elastic rod 30 is a urethane rod. The urethane rod is a thermosetting polyurethane elastomer, formed by the reaction of a polymeric polyol with an isocyanate, followed by chain extension and crosslinking.

[0040] In some optional embodiments, the number of eurygmus bars is three, and the three eurygmus bars are respectively disposed on opposite sides and at the bottom of the groove wall of the forming groove 211.

[0041] In some optional embodiments, the groove wall of the forming groove 211 includes two straight groove walls 2111 and an arc-shaped groove wall 2112; the two straight groove walls 2111 are respectively disposed on opposite sides of the opening of the forming groove 211; the arc-shaped groove wall 2112 is disposed at the bottom of the forming groove 211; an elastic rod 30 is disposed between the straight groove wall 2111 and the arc-shaped groove wall 2112; and a rebound relief groove 40 is formed between the end of the straight groove wall 2111 away from the elastic rod 30 and the elastic rod 30. Specifically, elastic rods 30 are provided at both ends and the bottom of the arc-shaped groove wall 2112. During the stamping process of the forming punch 11 pressing down on the workpiece 50, the workpiece 50 contacts the three elastic rods 30 respectively. Springback relief grooves 40 are formed between the end of the straight groove wall 2111 away from the elastic rods 30 and between adjacent elastic rods 30, thus preventing damage to the groove wall of the forming groove 211 when the workpiece 50 springs back and deforms, thereby extending the service life of the fixed mold assembly 20. It should be further noted that the specifications (including shape and size) and position of the springback relief grooves 40 can be reasonably designed according to actual needs to adapt to the forming requirements of different types of parts. A reasonably designed springback relief groove 40 can effectively prevent damage to the groove wall of the forming groove 211 when the workpiece 50 springs back and deforms, while ensuring better forming accuracy and meeting the requirements of automatic demolding.

[0042] In some optional embodiments, the stamping working surface of the forming punch 11 has a semi-circular structure, suitable for bending machine forming equipment, and can stamp semi-circular arc parts in one go. Compared with the traditional semi-circular arc part forming process (which usually requires multiple stamping and bending processes in the prior art, not only increasing production costs, but also easily leading to part deformation and surface damage), the stamping die provided in this embodiment can complete the forming of semi-circular arc parts in one go, which not only reduces costs, but also improves forming accuracy, forming quality and forming efficiency. In addition, the stamping die has a simple structure and is easy to operate.

[0043] In some optional embodiments, a placement platform 212 is provided at one end of the base 21 near the opening of the forming groove 211, and limiting portions 213 are provided on opposite sides of the placement platform 212. The placement platform 212 is used to place the workpiece 50 to be processed, and the limiting portions 213 are used to position the workpiece 50 to be processed, so that the workpiece 50 to be processed is in a preset correct position.

[0044] In some alternative embodiments, a mounting member 214 is provided at the end of the base 21 away from the opening of the forming groove 211. The base 21 is detachably mounted on the worktable of the bending machine via the mounting member 214, thereby facilitating the replacement of stamping dies of different specifications and flexibly adapting to different production needs.

[0045] In some alternative embodiments, the mounting element 214 may be, but is not limited to, a positioning protrusion that can engage with a positioning groove on the bending machine worktable.

[0046] Furthermore, one embodiment of this utility model provides a bending machine, including the stamping die based on the bending machine as described in any of the above embodiments. Since the bending machine includes the stamping die based on the bending machine, it at least possesses the technical effects of the stamping die based on the bending machine, which will not be elaborated further here.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stamping die based on a bending machine, characterized in that, include: Moving mold assembly, including forming punch; A mold assembly includes a base, on which a forming groove adapted to the forming punch is provided; Multiple elastic rods are arranged circumferentially along the groove wall of the shaped groove, and a springback relief groove is formed between adjacent elastic rods.

2. The stamping die based on a bending machine according to claim 1, characterized in that, The elastic rod is embedded in the groove wall of the shaped groove, and its exposed end face protrudes from the groove wall to form a contact surface.

3. The stamping die based on a bending machine according to claim 1, characterized in that, The elastic rod is an elastomer.

4. The stamping die based on a bending machine according to claim 3, characterized in that, The number of the three urethane rods is three, and the three urethane rods are respectively disposed on opposite sides and at the bottom of the groove wall of the forming groove.

5. The stamping die based on a bending machine according to claim 1, characterized in that, The groove wall of the formed groove includes: Two straight groove walls are respectively set on opposite sides of the opening of the forming groove; An arc-shaped groove wall is provided at the bottom of the formed groove. An elastic rod is provided between the straight groove wall and the arc-shaped groove wall. A rebound relief groove is formed between the end of the straight groove wall away from the elastic rod and the elastic rod.

6. The stamping die based on a bending machine according to claim 1, characterized in that, The stamping working surface of the forming punch has a semi-circular structure.

7. The stamping die based on a bending machine according to claim 1, characterized in that, The base is provided with a placement platform at one end near the opening of the molding groove, and limiting parts are provided on the opposite sides of the placement platform.

8. The stamping die based on a bending machine according to claim 1, characterized in that, The base is provided with a mounting component at one end away from the opening of the forming groove, and the base is detachably mounted on the worktable of the bending machine via the mounting component.

9. The stamping die based on a bending machine according to claim 8, characterized in that, The mounting component is a positioning protrusion.

10. A bending machine, characterized in that, Including the stamping die based on a bending machine as described in any one of claims 1 to 9.

Images