Selective punching die for steering wheel mounting hole in dash panel

Abstract

The utility model discloses a selective punching die for a steering wheel mounting hole in a dash panel, which comprises an upper die, a material pressing device is arranged on the upper die, a tapered wedge is arranged in the material pressing device, and a punch is arranged at the bottom of the tapered wedge; the upper die is provided with a moving mechanism, the moving mechanism comprises an air cylinder, a piston rod of the air cylinder is connected with a driving block, by the adoption of the selective punching die for the steering wheel installation hole in the dash panel, selective punching of the steering wheel installation hole is achieved, and the die development cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to a selective punching mold for a steering wheel mounting hole on a front panel. Background Art

[0002] In the rapidly developing stamping die industry, structural improvements are being made to reduce die count and save costs, enabling the production of complex parts. Currently, automotive dash panels often feature left-hand and right-hand drive options, primarily due to the left-right differences in the steering wheel mounting holes. Consequently, these holes require selective wedge-shaped punching.

[0003] Since the steering wheel hole is close to the middle of the front panel part, the existing ordinary switching mechanism cannot achieve selective punching. To achieve this punching selectivity, a separate set of molds needs to be developed, resulting in excessively high development costs.

[0004] The invention patent with publication number CN107377747A was disclosed on November 24, 2021, and is titled "A Quick-Draw Selective Trimming or Non-Trimming Die for Punching Dies," comprising a shell I with a punching punch and a shell II with a trimming mechanism built in. The bottom end of the punching punch contacts the trimming mechanism through a material guide mechanism, which includes a first material guide system and a second material guide system. The first and second material guide systems are symmetrically arranged on the inner side walls of the shell I, and the trimming mechanism is arranged between and slightly below the first and second material guide systems. Both shells I and II are semi-open structures with one side open. This mold also fails to solve the technical problems described above. Utility Model Content

[0005] The purpose of the utility model is to provide a selective punching die for steering wheel mounting holes on a front panel, which can realize selective punching of steering wheel mounting holes and reduce the cost of die development, in response to the deficiencies of the existing technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The selective punching die for the steering wheel mounting hole on the front panel includes an upper die, the upper die is provided with a presser, an inclined wedge is provided inside the presser, and a punch is provided at the bottom of the inclined wedge; the upper die is provided with a moving mechanism, the moving mechanism includes a cylinder, and the piston rod of the cylinder is connected to a driving block.

[0008] A through hole is provided at the end of the press, and one end of the punch is located in the through hole.

[0009] The moving mechanism is symmetrically arranged about the middle part of the upper mold.

[0010] The bottom of the driving block and the end of the presser are both arranged obliquely.

[0011] A guide plate is provided at the bottom of the upper die, and the upper end surface of the driving block contacts the bottom of the guide plate.

[0012] The upper die is provided with pressure plates on both sides of the driving block, and steps are provided on both sides of the driving block, and the steps are overlapped between the pressure plates and the upper die.

[0013] The pressing plate is provided with a mounting hole.

[0014] The technical effect of the utility model is: by adopting the selective punching die for the steering wheel mounting hole on the front panel of the utility model, a cylinder is set to push the reciprocating motion of the driving block, so as to realize the contact or separation of the driving block and the inclined wedge in the presser, thereby realizing the selective punching of the inclined wedge, meeting the hole opening requirements of the steering wheel mounting hole on the front panel, eliminating the switching time of the punch, improving work efficiency, and saving the development cost of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] This manual includes the following drawings, which show the following contents:

[0016] Figure 1 This is an assembly view of the upper die of the selective punching die for the steering wheel mounting hole on the front panel of the utility model;

[0017] Figure 2 yes Figure 1 A partial enlarged view of

[0018] Figure 3 This is a punching state view of the punch of the utility model;

[0019] Figure 4 This is a view of the punch of the utility model in a non-punching state.

[0020] The markings in the figure are: 1. Upper die; 2. Cylinder; 3. Drive block; 4. Presser; 5. Wedge; 6. Punch; 7. Guide plate; 8. Press plate; 9. Step; 10. Mounting hole; 11. Through hole. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0022] like Figures 1 to 4 As shown, the selective punching die for the steering wheel mounting hole on the front panel includes an upper die 1, which is provided with a presser 4, a wedge 5 is provided inside the presser 4, and a punch 6 is provided at the bottom of the wedge 5; the upper die 1 is provided with a moving mechanism, which includes a cylinder 2, and the piston rod of the cylinder 2 is connected to a drive block 3.

[0023] The working principle of this punching die is that the cylinder 2 controls the reciprocating motion of the drive block 3 to achieve selective punching of the wedge 5 in the press 4. The drive block 3 is located above the wedge 5. The cylinder 2 is connected to the air source to achieve unidirectional reciprocating motion of the drive block 3, thereby achieving a corresponding or staggered distribution effect with the wedge 5. When the drive block 3 is at the top of the wedge 5, the drive block 3 can transmit the force to the punch 6 of the wedge 5 to complete the punching of the steering wheel mounting hole. When the drive block 3 is misaligned with the wedge 5, the wedge 5 is not subjected to force, so the punching is not achieved, and the moving mechanisms in other positions of the die can complete the process normally.

[0024] like Figure 3 and Figure 4 As shown, a through hole 11 is provided at the end of the presser 4, and one end of the punch 6 is located in the through hole 11. The through hole 11 is used for extending or retracting the punch 6. The punch 6 is located at one end of the bottom of the inclined wedge 5, and the other end of the bottom of the inclined wedge 5 can contact the end of the presser 4. When the inclined wedge 5 reaches the maximum moving distance, its bottom can form an abutment effect with the end of the presser 4, limiting the moving distance of the punch 6, avoiding production abnormalities and ensuring the structural reliability of the punch 6.

[0025] like Figure 1 As shown, the moving mechanism is symmetrically arranged about the middle of the upper mold 1. There are two sets of moving mechanisms, which are arranged opposite each other. According to the production requirements of the current left-hand drive or right-hand drive vehicle model, after the front panel is placed, the operation of the cylinder 2 is controlled to adjust the position of the drive block 3. The operation processes of the two sets of cylinders 2 are opposite, and the two drive blocks 3 are respectively located at the forward dead center and the rearward dead center. The front panel is punched, realizing selective punching of the steering wheel mounting holes for left-hand drive and right-hand drive vehicles, so that a single mold can achieve punching in two positions, without the need to develop a separate set of molds.

[0026] like Figure 3 and Figure 4 As shown, the bottom of the driving block 3 and the end of the press 4 are both inclined. The above structure changes the force direction of the punch 6 to achieve side punching, which can meet the punching requirements of front panels with more complex shapes, improve the guiding accuracy of the press 4, ensure the punching quality, and reduce the difficulty of mold design, making the mold design more flexible.

[0027] like Figures 2 to 4 As shown, a guide plate 7 is provided at the bottom of the upper mold 1, and the upper end surface of the driving block 3 contacts the bottom of the guide plate 7. The guide plate 7 is used to provide a guiding sliding effect for the movement of the driving block 3, reduce the movement resistance of the driving block 3, and ensure the smooth operation of the driving block 3.

[0028] like Figures 2 to 4As shown, the upper mold 1 is provided with pressure plates 8 on both sides of the driving block 3, and steps 9 are provided on both sides of the driving block 3, and the steps 9 are overlapped on the pressure plates 8. With the above structure, both sides of the driving block 3 can be limited by the pressure plates 8, so that the driving block 3 is reliably limited in the vertical direction. The setting of the pressure plates 8 does not affect the lateral movement of the driving block 3.

[0029] like Figure 2 As shown, the pressing plate 8 is provided with a mounting hole 10. The pressing plate 8 is mounted on the upper die 1 by a plurality of bolts, and the connection stability is high and it is easy to disassemble.

[0030] The cylinder 2 is stretched forward and backward under the action of the press air source, driving the drive block 3 to move back and forth: the drive block 3 moves back and forth on the upper mold 1 under the guiding sliding of the guide plate 7 and the limiting action of the pressure plate 8.

[0031] 1. When the wedge 5 on the presser 4 needs to be punched, the air inlet of the cylinder 2 is ventilated first, and the cylinder 2 is pushed forward, further making the driving block 3 reach the forward dead point and be in the same vertical position as the wedge 5 of the presser 4. The press is further pressed downward, and the wedge 5 is further driven by the driving block 3 and slides in the presser 4, thereby realizing side punching.

[0032] 2. When the inclined wedge 5 on the presser 4 does not need to be punched, first the air inlet and outlet of the cylinder 2 are pulled backward, further making the driving block 3 reach the backward dead point, and the position of the inclined wedge 5 on the presser 4 is staggered, and the press is pressed downward. Since the position of the inclined wedge 5 is just staggered with the driving block 3, it does not move in the presser 4, thereby achieving non-side punching.

[0033] According to the two working states of the driving block 3 mentioned above, combined with the use of two groups of moving mechanisms, the requirements for opening the left-hand rudder or right-hand rudder steering wheel mounting hole on the front panel are met.

[0034] Since selective punching is generally achieved by directly switching the punch 6 through a cylinder, this process requires switching the wedge 5 inside the press 4, and general switching is no longer possible. However, this punching die achieves selective punching by switching the contact position between the driving block 3 of the wedge 5 of the upper die 1 and the guide plate 7 of the punching wedge 5. Compared with the existing method of switching the punch 6, this method saves the time of disassembly and assembly of the punch 6 and improves work efficiency.

[0035] The selective punching die for the steering wheel mounting hole on the front panel drives the reciprocating motion of the driving block 3 by setting a cylinder 2, thereby realizing the contact or separation of the driving block 3 and the inclined wedge 5 in the presser 4, thereby realizing selective punching of the inclined wedge 5, meeting the hole opening requirements of the steering wheel mounting hole on the front panel, eliminating the switching time of the punch 6, improving work efficiency, and saving the development cost of the mold.

[0036] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A selective punching die for the steering wheel mounting hole on the front panel, characterized by: The invention comprises an upper die (1), wherein the upper die (1) is provided with a presser (4), wherein an inclined wedge (5) is provided inside the presser (4), and a punch (6) is provided at the bottom of the inclined wedge (5); the upper die (1) is provided with a moving mechanism, wherein the moving mechanism comprises a cylinder (2), and the piston rod of the cylinder (2) is connected to a driving block (3).

2. The selective punching die for the steering wheel mounting hole on the dash panel according to claim 1, characterized in that: A through hole (11) is provided at the end of the press (4), and one end of the punch (6) is located in the through hole (11).

3. The selective punching die for the steering wheel mounting hole on the dash panel according to claim 2, characterized in that: The moving mechanism is symmetrically arranged about the middle part of the upper mold (1).

4. The selective punching die for the steering wheel mounting hole on the dash panel according to claim 3, characterized in that: The bottom of the driving block (3) and the end of the presser (4) are both arranged at an inclination.

5. The selective punching die for the steering wheel mounting hole on the dash panel according to any one of claims 1 to 4, characterized in that: A guide plate (7) is provided at the bottom of the upper mold (1), and the upper end surface of the driving block (3) contacts the bottom of the guide plate (7).

6. The selective punching die for the steering wheel mounting hole on the dash panel according to claim 5, characterized in that: The upper mold (1) is provided with pressure plates (8) on both sides of the driving block (3), and steps (9) are provided on both sides of the driving block (3), and the steps (9) are overlapped between the pressure plates (8) and the upper mold (1).

7. The selective punching die for the steering wheel mounting hole on the dash panel according to claim 6, characterized in that: The pressing plate (8) is provided with a mounting hole (10).

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