Flanging switching mechanism for automobile stamping die and switching method of flanging switching mechanism

Abstract

The invention discloses an automobile stamping die flanging switching mechanism and a switching method thereof.The switching mechanism comprises an upper die body, a pressing core and a material pressing spring arranged above the pressing core and further comprises a switching sliding block and a switching spring used for driving the switching sliding block to move upwards, the switching sliding block is movably arranged on the upper die body, and the switching spring is used for driving the switching sliding block to move upwards. The pressing core is arranged on the lower portion of the switching sliding block, and the material pressing spring is located between the pressing core and the switching sliding block. And the pressure core can be switched to be prevented from being always pressed by the material pressing spring, so that the molded surface of the switched pressure core cannot be in contact with the molded surface of the convex mold, the phenomenon of surface offset when a plate is not provided with an oil filling port or a charging port is solved, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile stamping dies, in particular to an automobile stamping die flanging switching mechanism and a switching method thereof. Background Art

[0002] With the development of the automobile industry, many automobile manufacturers have more and more diversified requirements for external panels. As a consumer product, automobiles are updated more and more frequently, resulting in more complex auto parts. In order to achieve the production of more complex products without changing the process, different configurations of models are introduced to meet market demand in order to increase customer selection. In order to meet the huge demand, automobile molds have also made corresponding changes. The common structure in the past can no longer meet the current situation, and we need to optimize the structure to correspond to diversified market products.

[0003] For example, there is a switch between the fuel filler port and the charging port on the side of the car; there is a quality problem of the product surface being discontinuous when the conventional fuel filler port and the charging port are shaped and flanged and switched; specifically, the common ordinary switching requires the spring on the switching mechanism to give force to the pressing core, causing the pressing core to be under pressure from the spring in any state, thereby causing a step difference in the profile.

[0004] For example, the patent CN110976649A discloses a flanging shaping die, which includes a side shaping insert, a positive pressure core, an upper die suspension wedge, a nitrogen spring, an upper flanging insert, a reverse wedge, an upper die and a lower die; the upper die suspension wedge is arranged on the upper die and can move up and down with the upper die; the positive pressure core is arranged on the upper die and is located on one side of the upper die suspension wedge; the side shaping insert is installed in the positive pressure core and is located on one side of the upper die suspension wedge, and is used for side shaping of the plate during the lifting process of the upper die; the nitrogen spring is arranged on the upper die suspension wedge; the pressure core structure is always under force. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a flanging switching mechanism for an automobile stamping die and a switching method thereof, which can be switched to prevent the pressing core from being constantly subjected to the pressure of a pressing spring.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A flanging switching mechanism for an automobile stamping die comprises an upper die body, a pressing core and a pressing spring arranged above the pressing core, and also comprises a switching slider and a switching spring for driving the switching slider to move upward. The switching slider is movably arranged on the upper die body, the pressing core is arranged at the lower part of the switching slider, and the pressing spring is located between the pressing core and the switching slider.

[0008] A groove is arranged at the lower part of the switching slide block, and the upper end of the pressing spring is located in the groove.

[0009] A driving slider and a driving cylinder for pushing the driving slider are provided above the corresponding switching slider in the upper mold body.

[0010] The switching slider and the side surface of the pressing core are provided with a guide limiting guide plate for limiting the travel guide.

[0011] The switching spring is arranged corresponding to the edge of the switching slide block.

[0012] The driving cylinder is a pneumatic cylinder.

[0013] The upper end of the guide and limit guide plate is fixed on the switching slide block, the lower end of the guide and limit guide plate is provided with an inner convex block, the side surface of the pressing core is provided with a guide groove, and the inner convex block is movably arranged in the guide groove.

[0014] The guide and limiting guide plates are a group arranged relatively to each other.

[0015] A switching method using the automobile stamping die flanging switching mechanism comprises the following steps:

[0016] When the switching mechanism needs to work, the cylinder pushes the driving slider. At this time, the Z-direction freedom of the switching slider will be fixed, and the switching slider will be stationary relative to the upper die. The switching pressure core is a material pressing structure, and the pressure spring acts on the switching pressure core to play a material pressing role.

[0017] When the switching mechanism does not need to work, the cylinder pulls back the driving slider, and the switching slider will move upward due to the switching spring. The pressing spring will be in a released state, and the switching pressing core will not be subjected to the pressure of the pressing spring, so that the switching pressing core surface will not contact the convex model surface.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The automobile stamping die flanging switching mechanism and the switching method thereof are reasonably designed, and can switch to avoid the pressing core being always subjected to the pressure of the pressing spring, so that the switching pressing core profile will not contact the convex model surface, thereby solving the problem of surface break difference when the plate has no refueling port or charging port, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following is a brief description of the contents and symbols in the drawings of this specification:

[0021] Figure 1 The switching mechanism structure of the present invention is schematically shown in FIG. Figure 1 .

[0022] Figure 2 The switching mechanism structure of the present invention is schematically shown in FIG. Figure 2 .

[0023] In the figure:

[0024] 1. Driving slider, 2. Switching slider, 3. Switching spring, 4. Pressing core, 5. Pressing spring, 6. Guide limit guide plate. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown, the automobile stamping die flanging switching mechanism includes an upper die body, a lower die body, a switching slider 2, a pressing core 4, a pressing spring 5 arranged above the pressing core, and a switching spring 3 for driving the switching slider to move upward.

[0027] The switching slider 2 is movably arranged on the upper mold body, the pressing core is arranged at the lower part of the switching slider, the pressing spring 5 is located between the pressing core and the switching slider, and the pressing spring force acts on the pressing core structure to position the stamped sheet metal part through the pressing core structure.

[0028] Furthermore, a groove is provided at the lower part of the switching slide block, and the upper end of the pressure spring is located in the groove; the pressure springs are a group arranged side by side; the structure is compact and the force is stable.

[0029] A driving slider 1 and a driving cylinder for pushing the driving slider are provided above the corresponding switching slider in the upper mold body; preferably, the driving cylinder is a pneumatic cylinder, which is provided on one side of the driving slider. The driving slider is located directly above the switching slider, and the driving slider is pushed away by the pneumatic cylinder, and the driving slider releases the limit of the switching slider. The driving slider moves away to form a space for the switching slider to move upward. Through the upward force of the switching spring, the switching slider moves upward and the pressing spring is in a released state.

[0030] The switching spring is arranged corresponding to the edge of the switching slider, and the structure is compact. The switching slider and the side of the pressure core are provided with a guide limit guide plate 6 for limiting the travel guide.

[0031] Preferably, the upper end of the guide limit plate 6 is fixed on the switching slide block, the lower end of the guide limit plate 6 is provided with an inner convex block, the side of the pressing core is provided with a guide groove, and the inner convex block is movably arranged in the guide groove. The guide limit plate is a set of relatively arranged.

[0032] When the product has a refueling port, in the mold open state, the cylinder pushes the driving slider, and the switching mechanism will be locked by the upper mold slider. At this time, all mechanisms are static relative to the upper mold, and the switching pressure core will be equivalent to a small pressure core, and the pressure spring force will be fully applied to the switching pressure core.

[0033] When the product has no refueling port, in the mold open state, the cylinder pulls back the drive slider. At this time, the switching mechanism will release a Z-axis degree of freedom, the switching pressure core will move upward a stroke, the switching pressure core will be released, and the pressure spring force will be completely unloaded. At this time, the small pressure core will not participate in the pressure action, thus solving the surface break caused by the spring of the conventional switching mechanism always acting on the pressure core.

[0034] The invention makes changes based on the common switching mechanism. Usually, the switching structure is divided into a driving part and a working part. In order to consider the actual product quality switching requirements, the common ordinary switching needs to use the spring on the switching mechanism to give the core pressure force, resulting in the core being under the pressure of the spring in any state, thus causing the profile to have a step difference. The switching mechanism of this invention switches the core pressure spring as a whole, solving the profile step difference caused by the spring force.

[0035] The present invention uses the switching method of the automobile stamping die flanging switching mechanism, comprising the following steps:

[0036] When the switching mechanism needs to work, the cylinder pushes the driving slider. At this time, the Z-direction freedom of the switching slider will be fixed, and the switching slider will be stationary relative to the upper die. The switching pressure core is a material pressing structure, and the pressure spring acts on the switching pressure core to play a material pressing role.

[0037] When the switching mechanism does not need to work, the cylinder pulls back the driving slider, and the switching slider will move upward due to the switching spring. The switching spring will be in a released state at this time, and the switching pressure core will not be subjected to the pressure of the pressure spring, so that the switching pressure core profile will not contact the convex model surface, thereby solving the problem of surface break when the plate has no oil filling port.

[0038] The above is only an explanation of the preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0039] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A flanging switching mechanism for an automobile stamping die, comprising an upper die body, a pressing core and a pressing spring arranged above the pressing core, characterized in that: It also includes a switching slider and a switching spring for driving the switching slider to move upward. The switching slider is movably arranged on the upper mold body, the pressing core is arranged at the lower part of the switching slider, and the pressing spring is located between the pressing core and the switching slider.

2. The automobile stamping die flanging switching mechanism according to claim 1, characterized in that: A groove is arranged at the lower part of the switching slide block, and the upper end of the pressing spring is located in the groove.

3. The automobile stamping die flanging switching mechanism according to claim 1, characterized in that: A driving slider and a driving cylinder for pushing the driving slider are provided above the corresponding switching slider in the upper mold body.

4. The automobile stamping die flanging switching mechanism according to claim 1, characterized in that: The switching slider and the side surface of the pressing core are provided with a guide limiting guide plate for limiting the travel guide.

5. The automobile stamping die flanging switching mechanism according to claim 1, characterized in that: The switching spring is arranged corresponding to the edge of the switching slide block.

6. The automobile stamping die flanging switching mechanism according to claim 3, characterized in that: The driving cylinder is a pneumatic cylinder.

7. The automobile stamping die flanging switching mechanism according to claim 4, characterized in that: The upper end of the guide and limit guide plate is fixed on the switching slide block, the lower end of the guide and limit guide plate is provided with an inner convex block, the side surface of the pressing core is provided with a guide groove, and the inner convex block is movably arranged in the guide groove.

8. The automobile stamping die flanging switching mechanism according to claim 7, characterized in that: The guide and limiting guide plates are a group arranged relatively to each other.

9. A switching method using the automobile stamping die flanging switching mechanism according to any one of claims 1 to 8, characterized in that: The switching method comprises the following steps: When the switching mechanism needs to work, the cylinder pushes the driving slider. At this time, the Z-direction freedom of the switching slider will be fixed, and the switching slider will be stationary relative to the upper die. The switching pressure core is a material pressing structure, and the pressure spring acts on the switching pressure core to play a material pressing role. When the switching mechanism does not need to work, the cylinder pulls back the driving slider, and the switching slider will move upward due to the switching spring. The pressing spring will be in a released state, and the switching pressing core will not be subjected to the pressure of the pressing spring, so that the switching pressing core surface will not contact the convex model surface.

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