A wave blade structure of trimming die

Abstract

The utility model discloses a trimming die wave blade structure, belonging to the technical field of automobile stamping dies, comprising an upper die, the upper die being provided with a trimming blade along the length direction, the trimming blade presenting a continuous wave-shaped structure along the length direction, the single period wavelength range L of the wave-shaped trimming blade being 400mm-600mm, and the blade fluctuation height H of the wave-shaped trimming blade being 3mm-6mm. The trimming blade is wave-shaped, and blades of different heights make the trimming blade produce a time difference in contact with the lower die at various parts during stamping, and the cutting amount at each point increases slowly, so as to achieve the effect of dispersing the trimming blanking force, thereby reducing the noise during punching.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile stamping dies, in particular to a trimming die wave blade structure. Background Art

[0002] Automotive panel trimming dies are key tools in automotive manufacturing. These dies are designed to shape the metal or plastic materials required for automotive panels and trim the waste around the panels to ensure that they meet design specifications and have the desired appearance and function.

[0003] As the mechanization level of the OEM stamping workshop becomes higher and higher, robots replace manual labor, and the production frequency of robots is 15-20 times / min, so noise pollution problems are inevitable. This noise problem mainly comes from the following aspects: 1. High pressure and vibration. The trimming die applies high pressure during the processing, causing friction and vibration between the die surface and the material. These vibrations will cause noise from the die and working equipment; 2. The material may be deformed or broken when subjected to high pressure and extrusion, and this process is often accompanied by noise.

[0004] At present, the noise reduction measures for trimming die are mainly to choose more wear-resistant materials to make trimming die, and apply special lubricants on the surface of the die to reduce friction and vibration, thereby reducing noise generation. Or by applying vibration reduction devices on trimming die and related equipment, vibration transmission can be effectively reduced, thereby reducing noise levels. Utility Model Content

[0005] The purpose of the utility model is to provide a trimming die wave blade structure and to provide a new idea for reducing noise when trimming a cover, so as to solve the problems existing in the above-mentioned prior art.

[0006] Provided is a trimming die wave blade structure, comprising:

[0007] The upper die is provided with a trimming edge along the length direction, the trimming edge presents a continuous wavy structure along the length direction, a single period wavelength range L of the wavy trimming edge is 400mm-600mm, and a cutting edge fluctuation height H of the wavy trimming edge is 3mm-6mm.

[0008] Furthermore, a single period wavelength range L of the wavy trimming edge is between 480 mm and 520 mm.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The trimming blade is wavy, and the cutting edges of different heights make the trimming blade contact the lower die at different times during stamping. The cutting amount at each point increases slowly, achieving the effect of dispersing the trimming and blanking force, thereby reducing the noise during punching. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0012] Figure 1 It is a cross-sectional view of a wave blade structure of a trimming die;

[0013] Figure 2 Schematic diagram of the overall structure of the upper mold.

[0014] In the figure: 1. Upper die; 2. Trimming edge; 3. Lower die. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-2 As shown, in an embodiment of the utility model, a trimming die wave blade structure comprises an upper die 1, and the upper die 1 is provided with a trimming blade 2 along the length direction. The trimming blade 2 presents a continuous wave-shaped structure along the length direction, and a single period wavelength range L of the wave-shaped trimming blade 2 is 400 mm to 600 mm, and a cutting edge fluctuation height H of the wave-shaped trimming blade 2 is 3 mm to 6 mm.

[0018] The upper die 1 and the lower die 3 are closed to punch the cover. When the upper die 1 is close to the lower die 3, the trimming blade 2 interferes with the waste area around the cover and further applies shear force. Rapid and accurate punching is achieved by reasonably controlling the amount of upper die 1. The wavy structure of the trimming blade 2 causes a time difference in the contact time between each part of the trimming blade 2 and the cover, that is, multiple punching points are generated along the trimming line, and these punching points are the first to produce deformation and fracture. As the trimming blade 2 continues to descend, the cut areas of multiple punching points extend to both ends respectively, until the multiple extended areas intersect and the entire waste area is punched.

[0019] Due to the different heights of the cutting edges on the trimming blade 2, the cutting amount increases slowly during the process of punching the waste area, and the punching energy is gradually released, so that the amplitude of the waste area is reduced under the joint restriction of the cover and the mold, reducing the noise during the punching process. After the trimming line is completely disconnected, since most of the energy in the punching area has been released during the punching process, the vibration margin after the cover is disconnected is also small, thereby reducing the noise caused by vibration after punching.

[0020] The single-cycle wavelength range L of the wavy trimming blade 2 is 400 mm to 600 mm. If the single-cycle range is too small, the trimming blade 2 will form a large number of stress concentration areas, and the arc-shaped blade structure will reduce the strength and wear resistance of the trimming blade 2, thereby reducing the service life of the trimming blade 2. Therefore, it is necessary to appropriately expand the range of undulation. However, the undulation range cannot be too large. An excessively large undulation range means that the number of starting punching points within the trimming line range is reduced, the amplitude of the waste area is increased, and the noise reduction effect is low.

[0021] Furthermore, the single period wavelength range L of the wavy trimming blade 2 is between 480 mm and 520 mm. Within this period wavelength range, the reduction in the structural strength of the trimming blade 2 is very small, and the noise reduction effect can be fully guaranteed.

[0022] The edge fluctuation height H of the wavy trimming blade 2 is between 3mm and 6mm. This fluctuation height is used to control the cutting amount of the trimming blade 2. On the one hand, the minimum cutting amount of the trimming blade 2 is 3mm to ensure the cutting depth to prevent insufficient punching force. On the other hand, the maximum cutting amount is 9mm to avoid wasted stroke and reduce the friction time between the trimming blade 2 and the material, thereby reducing the noise generated by friction. The fluctuation height H cannot be too small, otherwise the noise reduction effect cannot be achieved.

[0023] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A trimming die wave blade structure, characterized in that: include: An upper die (1) is provided with a trimming blade (2) along the length direction, the trimming blade (2) presents a continuous wavy structure along the length direction, a single period wavelength range L of the wavy trimming blade (2) is between 400 mm and 600 mm, and a blade edge fluctuation height H of the wavy trimming blade (2) is between 3 mm and 6 mm.

2. The trimming die wave blade structure according to claim 1, characterized in that: The single period wavelength range L of the wavy trimming blade (2) is between 480 mm and 520 mm.

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