Automobile stamping die with hidden bevel contract punching mechanism

Abstract

The utility model relates to punch technology field, specifically disclose automobile punch -die of hidden type bevel punch mechanism, including upper die holder, lower mould and setting in the material presser between upper die holder and lower mould, the material presser is used for pressing fixed to punch part, the inside of material presser is provided with bevel drive seat, the upper die holder is fixedly installed with bevel base, the side of bevel drive seat is provided with the bevel slider of sliding along bevel base, the utility model discloses through the material presser of bevel drive seat, slider etc. side punch mechanism is innovated and is built -in, the space of material presser outside is thoroughly released, so that the side punch and the positive trimming process that must be completed in sequence originally because of space interference can be completed in the same set mould, same punch stroke synchronously, directly reduces the mould quantity and punch process ordinal number needed for producing this part, simplifies the production line layout, shortens the production rhythm, thereby greatly improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of stamping technology, specifically to an automotive stamping die with a concealed oblique wedge punching mechanism. Background Technology

[0002] In the automotive body manufacturing industry, stamping dies are key process equipment used to form steel sheets into parts of specific shapes. For stamped parts with complex structures, non-perpendicular directions such as side walls often require punching, trimming, and other processing. In conventional stamping die design, when the side punching process and the trimming process in the vertical direction (positive direction) interfere with each other in terms of spatial structure, they usually need to be completed in separate sequences.

[0003] The current mainstream solution is to complete the interfering processes sequentially. That is, the front trimming is completed in one set of molds first, and then the side punching is performed in another set of molds using a wedge mechanism. The wedge mechanism typically consists of a wedge drive seat fixed to the upper mold base, a slider that cooperates with the drive seat, and a punch mounted on the slider. Through the downward movement of the upper mold, the vertical motion is converted into the horizontal or inclined motion of the slider, thereby completing the side punching.

[0004] In this conventional side-punching structure, the wedge drive seat is usually designed outside the pressure plate. This layout has obvious disadvantages: 1. Due to the spatial interference between the side-punching mechanism and the front trimming mechanism, the processes are dispersed, the number of molds is large, the production line is long, and the overall cost is high; 2. The conventional pressure plate method is not effective in fixing complex parts, making it difficult to guarantee high-precision machining.

[0005] Based on this, this application provides an automotive stamping die with a concealed oblique wedge punching mechanism. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an automotive stamping die with a concealed oblique wedge punching mechanism, which solves the problems of dispersed processes, numerous dies, long production lines, and high overall costs caused by spatial interference between the side punching mechanism and the front trimming mechanism in existing technologies.

[0007] The concealed oblique wedge punching mechanism of this utility model is used for automotive stamping dies, including an upper die base, a lower die, and a pressure plater disposed between the upper die base and the lower die. The pressure plater is used to press and fix the stamped parts. The inner side of the pressure feeder is provided with a wedge drive seat, and the wedge base is fixedly installed on the upper die base; A wedge slider is provided on one side of the wedge drive seat, which slides along the wedge base, and the wedge slider is driven to connect with the wedge drive seat. One end of the wedge slider is equipped with a punch for lateral punching, which is used to punch the stamped parts in conjunction with the pressure plate. The downward movement of the upper die base forces the wedge drive seat to push the wedge slider to perform a combined lateral and downward movement along the wedge base, driving the punch to complete the side punching action on the stamped part.

[0008] As a further improvement of this utility model, a front trimming cutter is installed on the upper die base. The front trimming cutter is located outside the pressure plate. While the punch completes the lateral punching, the front trimming cutter moves downward with the upper die base to complete the front trimming of the part.

[0009] As a further improvement of this utility model, a guide mechanism is provided between the pressure feeder and the upper die base to ensure the stability of the movement of the pressure feeder relative to the upper die base.

[0010] As a further improvement of this utility model, a power source is provided above the pressure device to drive the pressure device to move downwards and press the stamped parts.

[0011] As a further improvement of this utility model, a magnetic suction element is provided on the outside of the pressure device, which is used to cooperate with the pressure device to attract and fix the stamped parts.

[0012] As a further improvement of this utility model, the magnetic suction component includes a magnetic suction plate, and an avoidance groove is provided on the plate body of the magnetic suction plate. The position of the avoidance groove corresponds to the working path of the side punch of the punch and the trimming line of the front trimmer, so that the magnetic attraction force acts on the non-processed area of ​​the stamped part through the edge area of ​​the magnetic suction plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention innovatively integrates the wedge drive seat, slider, and other side punching mechanisms into the pressure plate, completely freeing up the space outside the pressure plate. This allows the side punching and front trimming processes, which originally had to be completed in sequence due to spatial interference, to be completed simultaneously within the same mold and the same stamping stroke. This directly reduces the number of molds and stamping processes required to produce the part, simplifies the production line layout, shortens the production cycle, and thus significantly improves production efficiency. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 2 This is a schematic diagram of the upper mold structure of this utility model from a bottom view; Figure 3This is a schematic diagram of the conventional side view structure of the die-clamping stamping of this utility model; Figure 4 This is a schematic diagram of the concealed side view structure of the die-forming part of this utility model.

[0015] In the diagram: 1. Angled wedge drive seat; 2. Pressure plate; 3. Angled wedge slider; 4. Angled wedge base; 5. Front dressing tool; 6. Punch; 7. Lower die; 8. Upper die base; 9. Stamped part. Detailed Implementation

[0016] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0017] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0018] Please see Figure 1 , Figure 2 as well as Figure 3 Conventional stamping die structures require the steps that interfere in the stamping direction to be completed in multiple sequences. In the stamping process of complex parts, when the side punching process and the front trimming process interfere with each other in structure, they are completed in separate sequences, and the side punching is driven by an external force, resulting in a large number of processes, large die size, and high overall stamping cost. Based on this, this application provides an automotive stamping die with a hidden oblique wedge punching mechanism, including an upper die base 8, a lower die 7, and a pressure plate 2 disposed between the upper die base 8 and the lower die 7. The pressure plate 2 is used to process the stamped part 9. The inner side of the pressure feeder 2 is provided with a wedge drive seat 1, and the upper die seat 8 is fixedly installed with a wedge base 4. A wedge slider 3 is provided on one side of the wedge drive seat 1, which slides along the wedge base 4. The wedge slider 3 is drivenly connected to the wedge drive seat 1. One end of the inclined wedge slider 3 is equipped with a punch 6 for side punching, which is used to cooperate with the pressure plate 2 to punch the stamped part 9; The downward movement of the upper die holder 8 forces the wedge drive seat 1 to push the wedge slider 3 along the wedge base 4 to perform a combined lateral and downward movement, driving the punch 6 to complete the side punching action on the stamped part 9.

[0019] The upper die holder 8 and the pressure platen 2 are connected by a guide post and a guide sleeve to form a guiding mechanism, ensuring that the pressure platen 2 can move vertically downward stably relative to the upper die holder 8. Before the stamping operation begins, the stamping part 9 to be processed is placed on the designated surface of the lower die 7. The upper die begins to move downward under the drive of the external press. At this time, the inclined wedge base 4 fixed to the upper die holder 8 moves downward together with the upper body.

[0020] The pressure plate 2 first contacts the surface of the stamping part 9 and applies pressure force to stably press the part onto the lower die 7. As the upper die continues to descend, the pressure plate 2 is blocked by the part, and relative movement occurs between it and the upper die base 8. This relative movement causes the wedge drive seat 1, which is located in the inner cavity of the pressure plate 2, to move down synchronously. The lower surface of the wedge drive seat 1 is an inclined drive surface, which contacts the wedge slider 3 located on the wedge base 4. Under the squeezing action of the wedge drive seat 1, the wedge slider 3 slides along the guide slope of the wedge base 4 fixed to the upper die base 8 in a compound sliding direction that is both rightward and downward. Since the wedge slider 3 cooperates with the inclined surface of the wedge base 4, when the slider is subjected to a vertical force, it will decompose into movement along the inclined surface, thereby achieving lateral displacement.

[0021] One end of the wedge slider 3 is equipped with a punch 6. When the wedge slider 3 performs the above-mentioned compound motion, it drives the punch 6 to move along the preset trajectory toward the side wall of the stamping part 9, and finally completes the side punching process of the part.

[0022] During this process, the cutting tool 5, which is installed on the upper die holder 8 and located outside the pressure plate 2, also moves downward synchronously with the upper die holder 8. The cutting edge of the cutting tool 5 performs vertical trimming on the outer contour of the stamped part 9. Since the entire wedge drive mechanism, including the wedge drive seat 1, the wedge slider 3 and its movement space, is contained in the internal cavity of the pressure plate 2, its structure is compact and does not occupy the space outside the pressure plate 2 at all. Therefore, sufficient space is left for the movement and installation of the cutting tool 5, so that the two processes of side punching and cutting edge trimming, which originally interfered with each other in space, can be completed synchronously without interference in the same stamping stroke.

[0023] To further improve the pressing effect and prevent the stamped part 9 from slipping or deforming slightly during punching and trimming, a magnetic chuck with a slot can be integrated into the bottom of the pressure plate 2. This magnetic chuck generates a strong magnetic force when energized, firmly adhering to the stamped part 9 through its effective edge area. The middle of the magnetic chuck has a pre-machined clearance slot based on the movement path of the internal wedge slider 3 and the cutting edge trajectory of the external cutting tool 5. This design ensures that while providing strong adsorption and holding force, the magnetic chuck itself will not interfere with the moving punch 6 or the cutting tool 5, thereby reducing the number of processes and further guaranteeing the accuracy of the stamping process and the quality of the formed parts.

[0024] Please see Figure 2 , Figure 3 as well as Figure 4 A front trimmer 5 is installed on the upper die base 8. The front trimmer 5 is located outside the pressure plater 2. While the punch 6 completes the lateral punching, the front trimmer 5 moves downward with the upper die base 8 to complete the front trimming of the part.

[0025] A guide mechanism is provided between the pressure feeder 2 and the upper die holder 8 to ensure the stability of the movement of the pressure feeder 2 relative to the upper die holder 8.

[0026] A power source is provided above the pressure plate 2 to drive the pressure plate 2 to press the stamping part 9 downward.

[0027] The cutting edge of the cutting tool 5 installed on the upper die holder 8 is positioned exactly at the outer edge of the pressure platen 2. When the upper die holder 8 begins to move downward under the drive of the press slide, the cutting edge of the cutting tool 5 moves downward synchronously with the upper die holder 8. While the punch 6 completes the lateral punching of the stamping part 9 inside the pressure platen 2, the cutting edge of the cutting tool 5 also reaches the outer contour edge of the stamping part 9. Relying on the continuous downward pressure of the upper die, the cutting tool 5 cuts the part vertically, thus completing the cutting edge trimming. This process enables the lateral punching and cutting edge trimming to be completed synchronously and in coordination within the same stamping stroke.

[0028] To achieve stable movement of the pressure plate 2 relative to the upper die holder 8, a guide mechanism is provided between the pressure plate 2 and the upper die holder 8. This guide mechanism typically consists of a guide post fixed to the upper die holder 8 and a guide sleeve embedded in the pressure plate 2. The guide post and the guide sleeve are fitted with a precise clearance to ensure that when the upper die descends, the pressure plate 2 can move smoothly along the vertical trajectory specified by the guide post without deflection or jamming. This stable guidance is crucial for ensuring the transmission accuracy of the internal wedge mechanism and the quality of the outer positive trimming.

[0029] To provide sufficient clamping force for driving the pressure plater 2, a power source is installed above the pressure plater 2. A common power source is multiple evenly distributed nitrogen springs. The upper ends of the nitrogen springs abut against the upper die base 8, and the lower ends act on the upper surface of the pressure plater 2. When the upper die moves downward and the pressure plater 2 contacts and clamps the stamped part 9, the upper die continues to move downward, which compresses the nitrogen springs. The reaction force generated by the compression of the springs is converted into a continuous and stable clamping force, which is applied to the stamped part 9 through the pressure plater 2, thereby effectively preventing the sheet metal from moving or wrinkling during punching and trimming.

[0030] Example 2: To further improve the stability of the stamped part 9, a magnetic suction element (not shown in the figure) can be provided on the outside of the pressure plater 2. The magnetic suction element is used to cooperate with the pressure plater 2 to attract and fix the stamped part 9.

[0031] The magnetic suction component includes a magnetic suction plate. The plate has a clearance slot, the position of which corresponds to the working path of the side punch of the punch 6 and the trimming line of the front trimmer 5, so that the magnetic force acts on the non-machined area of ​​the stamped part 9 through the edge area of ​​the magnetic suction plate.

[0032] Specifically, in the actual operation of the stamping die, in order to ensure that the stamped part 9 remains absolutely stable during the processing and to prevent it from undergoing slight displacement or warping during lateral punching and forward trimming, a magnetic suction component is set on the outside of the pressure plate 2. The main component of this magnetic suction component is a magnetic suction plate, which is fixed to the bottom surface of the pressure plate 2 by bolts or inlay, and its outline is adapted to the edge of the bottom surface of the pressure plate 2.

[0033] The magnetic plate forms an avoidance slot. Specifically, the outline of the avoidance slot is determined based on two main factors: first, the spatial envelope required when the internal wedge slider 3 drives the punch 6 to perform lateral punching; and second, the cutting edge movement trajectory and trimming line of the outer positive trimming tool 5, which are used to process irregular holes or slots that match these parameters on the magnetic plate.

[0034] When the magnetic plate is activated by electricity, it generates a strong magnetic field. However, due to the presence of a clearance slot in its center, the magnetic field cannot be effectively concentrated in the cavity area. Therefore, the magnetic lines of force are mainly concentrated in the solid area at the edge of the magnetic plate. This solid area corresponds precisely to the non-processed areas on the stamped part 9 that do not require punching or trimming, such as the surface platform or scrap area of ​​the product. In this way, the strong magnetic force is concentrated on these stable parts of the stamped part 9 through the effective action area at the edge of the magnetic plate, firmly adhering it to the surface of the lower die 7.

[0035] This design achieves a unified function of material clamping and clearance. The magnetic chuck provides strong additional holding force through its edge area, which works in conjunction with the clamping force of the material clamper 2 itself to greatly enhance the stability of the stamping process. At the same time, the clearance groove in the middle provides an interference-free movement channel for the moving parts of the internal wedge mechanism and the external front trimming cutter 5, ensuring that the side punching and front trimming actions can be completed smoothly and accurately. This structure is particularly suitable for stamping high-strength steel plates where high forming accuracy is required.

[0036] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A concealed wedge punching mechanism for automobile stamping, comprising an upper die holder (8), a lower die (7) and a pressure platen (2) disposed between the upper die holder (8) and the lower die (7), wherein the pressure platen (2) is used to process stamped parts (9); Its features are: The inner side of the pressure feeder (2) is provided with a wedge drive seat (1), and the upper die seat (8) is fixedly installed with a wedge base (4). The wedge drive seat (1) is provided with a wedge slider (3) that slides along the wedge base (4) on one side, and the wedge slider (3) is driven to be connected to the wedge drive seat (1). One end of the inclined wedge slider (3) is equipped with a punch (6) for lateral punching, which is used to cooperate with the pressure platen (2) to punch the stamped part (9); The downward movement of the upper die holder (8) forces the wedge drive seat (1) to push the wedge slider (3) to perform a combined lateral and downward movement along the wedge base (4), driving the punch (6) to complete the side punching action on the stamped part (9).

2. The automotive stamping die with a concealed oblique wedge punching mechanism according to claim 1, characterized in that: A cutting tool (5) is installed on the upper die base (8). The cutting tool (5) is located outside the pressure plate (2). While the punch (6) completes the lateral punching drive, the cutting tool (5) moves downward with the upper die base (8) to complete the cutting edge trimming of the part.

3. The automotive stamping die with a concealed oblique wedge punching mechanism according to claim 1, characterized in that: A guide mechanism is provided between the pressure feeder (2) and the upper mold base (8) to ensure the stability of the movement of the pressure feeder (2) relative to the upper mold base (8).

4. The automotive stamping die with a concealed oblique wedge punching mechanism according to claim 1, characterized in that: The pressure plater (2) is provided with a power source above it, which can drive the pressure plater (2) to press the stamping part (9) downward.

5. The automotive stamping die with a concealed oblique wedge punching mechanism according to claim 1, characterized in that: A magnetic suction element is provided on the outside of the pressure feeder (2), which is used to cooperate with the pressure feeder (2) to attract and fix the stamped part (9).

6. The automotive stamping die with a concealed oblique wedge punching mechanism according to claim 5, characterized in that: The magnetic suction component includes a magnetic suction plate, and an avoidance slot is provided on the plate body. The position of the avoidance slot corresponds to the side punching working path of the punch (6) and the trimming line of the front trimmer (5), so that the magnetic attraction force acts on the non-processed area of ​​the stamped part (9) through the edge area of ​​the magnetic suction plate.

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